New analyzer snapshot.

pkg/analyzer/lib/src/generated/ast.dart

 // This code was auto-generated, is not intended to be edited, and is subject to
 // significant change. Please see the README file for more information.
+
 library engine.ast;
+
 import 'dart:collection';
 import 'java_core.dart';
 import 'java_engine.dart';
 import 'source.dart' show LineInfo;
 import 'scanner.dart';
 import 'engine.dart' show AnalysisEngine;
 import 'utilities_dart.dart';
 import 'utilities_collection.dart' show TokenMap;
 import 'element.dart';
+
 /**
  * The abstract class `ASTNode` defines the behavior common to all nodes in the AST structure
  * for a Dart program.
  *
  * @coverage dart.engine.ast
  */
 abstract class ASTNode {
-
   /**
    * An empty array of ast nodes.
    */
   static List<ASTNode> EMPTY_ARRAY = new List<ASTNode>(0);
 
   /**
    * The parent of the node, or `null` if the node is the root of an AST structure.
    */
   ASTNode _parent;
 
@@ skipping 24 matching lines @@
    * there is no enclosing node of the given class.
    *
    * @param nodeClass the class of the node to be returned
    * @return the node of the given type that encloses this node
    */
   ASTNode getAncestor(Type enclosingClass) {
     ASTNode node = this;
     while (node != null && !isInstanceOf(node, enclosingClass)) {
       node = node.parent;
     }
-    ;
     return node as ASTNode;
   }
 
   /**
    * Return the first token included in this node's source range.
    *
    * @return the first token included in this node's source range
    */
   Token get beginToken;
 
@@ skipping 118 matching lines @@
    * Return a textual description of this node in a form approximating valid source. The returned
    * string will not be valid source primarily in the case where the node itself is not well-formed.
    *
    * @return the source code equivalent of this node
    */
   String toSource() {
     PrintStringWriter writer = new PrintStringWriter();
     accept(new ToSourceVisitor(writer));
     return writer.toString();
   }
+
   String toString() => toSource();
 
   /**
    * Use the given visitor to visit all of the children of this node. The children will be visited
    * in source order.
    *
    * @param visitor the visitor that will be used to visit the children of this node
    */
   void visitChildren(ASTVisitor visitor);
 
@@ skipping 24 matching lines @@
   }
 
   /**
    * Set the parent of this node to the given node.
    *
    * @param newParent the node that is to be made the parent of this node
    */
   void set parent(ASTNode newParent) {
     _parent = newParent;
   }
+
   static int _hashCodeGenerator = 0;
+
   final int hashCode = ++_hashCodeGenerator;
 }
+
 /**
  * The interface `ASTVisitor` defines the behavior of objects that can be used to visit an AST
  * structure.
  *
  * @coverage dart.engine.ast
  */
 abstract class ASTVisitor<R> {
   R visitAdjacentStrings(AdjacentStrings node);
+
   R visitAnnotation(Annotation node);
+
   R visitArgumentDefinitionTest(ArgumentDefinitionTest node);
+
   R visitArgumentList(ArgumentList node);
+
   R visitAsExpression(AsExpression node);
+
   R visitAssertStatement(AssertStatement assertStatement);
+
   R visitAssignmentExpression(AssignmentExpression node);
+
   R visitBinaryExpression(BinaryExpression node);
+
   R visitBlock(Block node);
+
   R visitBlockFunctionBody(BlockFunctionBody node);
+
   R visitBooleanLiteral(BooleanLiteral node);
+
   R visitBreakStatement(BreakStatement node);
+
   R visitCascadeExpression(CascadeExpression node);
+
   R visitCatchClause(CatchClause node);
+
   R visitClassDeclaration(ClassDeclaration node);
+
   R visitClassTypeAlias(ClassTypeAlias node);
+
   R visitComment(Comment node);
+
   R visitCommentReference(CommentReference node);
+
   R visitCompilationUnit(CompilationUnit node);
+
   R visitConditionalExpression(ConditionalExpression node);
+
   R visitConstructorDeclaration(ConstructorDeclaration node);
+
   R visitConstructorFieldInitializer(ConstructorFieldInitializer node);
+
   R visitConstructorName(ConstructorName node);
+
   R visitContinueStatement(ContinueStatement node);
+
   R visitDeclaredIdentifier(DeclaredIdentifier node);
+
   R visitDefaultFormalParameter(DefaultFormalParameter node);
+
   R visitDoStatement(DoStatement node);
+
   R visitDoubleLiteral(DoubleLiteral node);
+
   R visitEmptyFunctionBody(EmptyFunctionBody node);
+
   R visitEmptyStatement(EmptyStatement node);
+
   R visitExportDirective(ExportDirective node);
+
   R visitExpressionFunctionBody(ExpressionFunctionBody node);
+
   R visitExpressionStatement(ExpressionStatement node);
+
   R visitExtendsClause(ExtendsClause node);
+
   R visitFieldDeclaration(FieldDeclaration node);
+
   R visitFieldFormalParameter(FieldFormalParameter node);
+
   R visitForEachStatement(ForEachStatement node);
+
   R visitFormalParameterList(FormalParameterList node);
+
   R visitForStatement(ForStatement node);
+
   R visitFunctionDeclaration(FunctionDeclaration node);
+
   R visitFunctionDeclarationStatement(FunctionDeclarationStatement node);
+
   R visitFunctionExpression(FunctionExpression node);
+
   R visitFunctionExpressionInvocation(FunctionExpressionInvocation node);
+
   R visitFunctionTypeAlias(FunctionTypeAlias functionTypeAlias);
+
   R visitFunctionTypedFormalParameter(FunctionTypedFormalParameter node);
+
   R visitHideCombinator(HideCombinator node);
+
   R visitIfStatement(IfStatement node);
+
   R visitImplementsClause(ImplementsClause node);
+
   R visitImportDirective(ImportDirective node);
+
   R visitIndexExpression(IndexExpression node);
+
   R visitInstanceCreationExpression(InstanceCreationExpression node);
+
   R visitIntegerLiteral(IntegerLiteral node);
+
   R visitInterpolationExpression(InterpolationExpression node);
+
   R visitInterpolationString(InterpolationString node);
+
   R visitIsExpression(IsExpression node);
+
   R visitLabel(Label node);
+
   R visitLabeledStatement(LabeledStatement node);
+
   R visitLibraryDirective(LibraryDirective node);
+
   R visitLibraryIdentifier(LibraryIdentifier node);
+
   R visitListLiteral(ListLiteral node);
+
   R visitMapLiteral(MapLiteral node);
+
   R visitMapLiteralEntry(MapLiteralEntry node);
+
   R visitMethodDeclaration(MethodDeclaration node);
+
   R visitMethodInvocation(MethodInvocation node);
+
   R visitNamedExpression(NamedExpression node);
+
   R visitNativeClause(NativeClause node);
+
   R visitNativeFunctionBody(NativeFunctionBody node);
+
   R visitNullLiteral(NullLiteral node);
+
   R visitParenthesizedExpression(ParenthesizedExpression node);
+
   R visitPartDirective(PartDirective node);
+
   R visitPartOfDirective(PartOfDirective node);
+
   R visitPostfixExpression(PostfixExpression node);
+
   R visitPrefixedIdentifier(PrefixedIdentifier node);
+
   R visitPrefixExpression(PrefixExpression node);
+
   R visitPropertyAccess(PropertyAccess node);
+
   R visitRedirectingConstructorInvocation(RedirectingConstructorInvocation node);
+
   R visitRethrowExpression(RethrowExpression node);
+
   R visitReturnStatement(ReturnStatement node);
+
   R visitScriptTag(ScriptTag node);
+
   R visitShowCombinator(ShowCombinator node);
+
   R visitSimpleFormalParameter(SimpleFormalParameter node);
+
   R visitSimpleIdentifier(SimpleIdentifier node);
+
   R visitSimpleStringLiteral(SimpleStringLiteral node);
+
   R visitStringInterpolation(StringInterpolation node);
+
   R visitSuperConstructorInvocation(SuperConstructorInvocation node);
+
   R visitSuperExpression(SuperExpression node);
+
   R visitSwitchCase(SwitchCase node);
+
   R visitSwitchDefault(SwitchDefault node);
+
   R visitSwitchStatement(SwitchStatement node);
+
   R visitSymbolLiteral(SymbolLiteral node);
+
   R visitThisExpression(ThisExpression node);
+
   R visitThrowExpression(ThrowExpression node);
+
   R visitTopLevelVariableDeclaration(TopLevelVariableDeclaration node);
+
   R visitTryStatement(TryStatement node);
+
   R visitTypeArgumentList(TypeArgumentList node);
+
   R visitTypeName(TypeName node);
+
   R visitTypeParameter(TypeParameter node);
+
   R visitTypeParameterList(TypeParameterList node);
+
   R visitVariableDeclaration(VariableDeclaration node);
+
   R visitVariableDeclarationList(VariableDeclarationList node);
+
   R visitVariableDeclarationStatement(VariableDeclarationStatement node);
+
   R visitWhileStatement(WhileStatement node);
+
   R visitWithClause(WithClause node);
 }
+
 /**
  * Instances of the class `AdjacentStrings` represents two or more string literals that are
  * implicitly concatenated because of being adjacent (separated only by whitespace).
  *
  * While the grammar only allows adjacent strings when all of the strings are of the same kind
  * (single line or multi-line), this class doesn't enforce that restriction.
  *
  * <pre>
  * adjacentStrings ::=
  *     [StringLiteral] [StringLiteral]+
  * </pre>
  *
  * @coverage dart.engine.ast
  */
 class AdjacentStrings extends StringLiteral {
-
   /**
    * The strings that are implicitly concatenated.
    */
   NodeList<StringLiteral> strings;
 
   /**
    * Initialize a newly created list of adjacent strings.
    *
    * @param strings the strings that are implicitly concatenated
    */
   AdjacentStrings.full(List<StringLiteral> strings) {
     this.strings = new NodeList<StringLiteral>(this);
     this.strings.addAll(strings);
   }
 
   /**
    * Initialize a newly created list of adjacent strings.
    *
    * @param strings the strings that are implicitly concatenated
    */
   AdjacentStrings({List<StringLiteral> strings}) : this.full(strings);
+
   accept(ASTVisitor visitor) => visitor.visitAdjacentStrings(this);
+
   Token get beginToken => strings.beginToken;
+
   Token get endToken => strings.endToken;
+
   void visitChildren(ASTVisitor visitor) {
     strings.accept(visitor);
   }
+
   void appendStringValue(JavaStringBuilder builder) {
     for (StringLiteral stringLiteral in strings) {
       stringLiteral.appendStringValue(builder);
     }
   }
 }
+
 /**
  * The abstract class `AnnotatedNode` defines the behavior of nodes that can be annotated with
  * both a comment and metadata.
  *
  * @coverage dart.engine.ast
  */
 abstract class AnnotatedNode extends ASTNode {
-
   /**
    * The documentation comment associated with this node, or `null` if this node does not have
    * a documentation comment associated with it.
    */
   Comment _comment;
 
   /**
    * The annotations associated with this node.
    */
   NodeList<Annotation> _metadata;
@@ skipping 10 matching lines @@
     this._metadata.addAll(metadata);
   }
 
   /**
    * Initialize a newly created node.
    *
    * @param comment the documentation comment associated with this node
    * @param metadata the annotations associated with this node
    */
   AnnotatedNode({Comment comment, List<Annotation> metadata}) : this.full(comment, metadata);
+
   Token get beginToken {
     if (_comment == null) {
       if (_metadata.isEmpty) {
         return firstTokenAfterCommentAndMetadata;
       } else {
         return _metadata.beginToken;
       }
     } else if (_metadata.isEmpty) {
       return _comment.beginToken;
     }
@@ skipping 31 matching lines @@
 
   /**
    * Set the metadata associated with this node to the given metadata.
    *
    * @param metadata the metadata to be associated with this node
    */
   void set metadata(List<Annotation> metadata) {
     this._metadata.clear();
     this._metadata.addAll(metadata);
   }
+
   void visitChildren(ASTVisitor visitor) {
     if (commentIsBeforeAnnotations()) {
       safelyVisitChild(_comment, visitor);
       _metadata.accept(visitor);
     } else {
       for (ASTNode child in sortedCommentAndAnnotations) {
         child.accept(visitor);
       }
     }
   }
@@ skipping 27 matching lines @@
    */
   List<ASTNode> get sortedCommentAndAnnotations {
     List<ASTNode> childList = new List<ASTNode>();
     childList.add(_comment);
     childList.addAll(_metadata);
     List<ASTNode> children = new List.from(childList);
     children.sort(ASTNode.LEXICAL_ORDER);
     return children;
   }
 }
+
 /**
  * Instances of the class `Annotation` represent an annotation that can be associated with an
  * AST node.
  *
  * <pre>
  * metadata ::=
  *     annotation*
  *
  * annotation ::=
  *     '@' [Identifier] ('.' [SimpleIdentifier])? [ArgumentList]?
  * </pre>
  *
  * @coverage dart.engine.ast
  */
 class Annotation extends ASTNode {
-
   /**
    * The at sign that introduced the annotation.
    */
   Token atSign;
 
   /**
    * The name of the class defining the constructor that is being invoked or the name of the field
    * that is being referenced.
    */
   Identifier _name;
@@ skipping 50 matching lines @@
    * @param name the name of the class defining the constructor that is being invoked or the name of
    *          the field that is being referenced
    * @param period the period before the constructor name, or `null` if this annotation is not
    *          the invocation of a named constructor
    * @param constructorName the name of the constructor being invoked, or `null` if this
    *          annotation is not the invocation of a named constructor
    * @param arguments the arguments to the constructor being invoked, or `null` if this
    *          annotation is not the invocation of a constructor
    */
   Annotation({Token atSign, Identifier name, Token period, SimpleIdentifier constructorName, ArgumentList arguments}) : this.full(atSign, name, period, constructorName, arguments);
+
   accept(ASTVisitor visitor) => visitor.visitAnnotation(this);
 
   /**
    * Return the arguments to the constructor being invoked, or `null` if this annotation is
    * not the invocation of a constructor.
    *
    * @return the arguments to the constructor being invoked
    */
   ArgumentList get arguments => _arguments;
+
   Token get beginToken => atSign;
 
   /**
    * Return the name of the constructor being invoked, or `null` if this annotation is not the
    * invocation of a named constructor.
    *
    * @return the name of the constructor being invoked
    */
   SimpleIdentifier get constructorName => _constructorName;
 
   /**
    * Return the element associated with this annotation, or `null` if the AST structure has
    * not been resolved or if this annotation could not be resolved.
    *
    * @return the element associated with this annotation
    */
   Element get element {
     if (_element != null) {
       return _element;
     }
     if (_name != null) {
       return _name.staticElement;
     }
     return null;
   }
+
   Token get endToken {
     if (_arguments != null) {
       return _arguments.endToken;
     } else if (_constructorName != null) {
       return _constructorName.endToken;
     }
     return _name.endToken;
   }
 
   /**
@@ skipping 33 matching lines @@
 
   /**
    * Set the name of the class defining the constructor that is being invoked or the name of the
    * field that is being referenced to the given name.
    *
    * @param name the name of the constructor being invoked or the name of the field being referenced
    */
   void set name(Identifier name) {
     this._name = becomeParentOf(name);
   }
+
   void visitChildren(ASTVisitor visitor) {
     safelyVisitChild(_name, visitor);
     safelyVisitChild(_constructorName, visitor);
     safelyVisitChild(_arguments, visitor);
   }
 }
+
 /**
  * Instances of the class `ArgumentDefinitionTest` represent an argument definition test.
  *
  * <pre>
  * argumentDefinitionTest ::=
  *     '?' [SimpleIdentifier]
  * </pre>
  *
  * @coverage dart.engine.ast
  */
 class ArgumentDefinitionTest extends Expression {
-
   /**
    * The token representing the question mark.
    */
   Token question;
 
   /**
    * The identifier representing the argument being tested.
    */
   SimpleIdentifier _identifier;
 
   /**
    * Initialize a newly created argument definition test.
    *
    * @param question the token representing the question mark
    * @param identifier the identifier representing the argument being tested
    */
   ArgumentDefinitionTest.full(Token question, SimpleIdentifier identifier) {
     this.question = question;
     this._identifier = becomeParentOf(identifier);
   }
 
   /**
    * Initialize a newly created argument definition test.
    *
    * @param question the token representing the question mark
    * @param identifier the identifier representing the argument being tested
    */
   ArgumentDefinitionTest({Token question, SimpleIdentifier identifier}) : this.full(question, identifier);
+
   accept(ASTVisitor visitor) => visitor.visitArgumentDefinitionTest(this);
+
   Token get beginToken => question;
+
   Token get endToken => _identifier.endToken;
 
   /**
    * Return the identifier representing the argument being tested.
    *
    * @return the identifier representing the argument being tested
    */
   SimpleIdentifier get identifier => _identifier;
 
   /**
    * Set the identifier representing the argument being tested to the given identifier.
    *
    * @param identifier the identifier representing the argument being tested
    */
   void set identifier(SimpleIdentifier identifier) {
     this._identifier = becomeParentOf(identifier);
   }
+
   void visitChildren(ASTVisitor visitor) {
     safelyVisitChild(_identifier, visitor);
   }
 }
+
 /**
  * Instances of the class `ArgumentList` represent a list of arguments in the invocation of a
  * executable element: a function, method, or constructor.
  *
  * <pre>
  * argumentList ::=
  *     '(' arguments? ')'
  *
  * arguments ::=
  *     [NamedExpression] (',' [NamedExpression])*
  *   | [Expression] (',' [NamedExpression])*
  * </pre>
  *
  * @coverage dart.engine.ast
  */
 class ArgumentList extends ASTNode {
-
   /**
    * The left parenthesis.
    */
   Token _leftParenthesis;
 
   /**
    * The expressions producing the values of the arguments.
    */
   NodeList<Expression> arguments;
 
@@ skipping 35 matching lines @@
   }
 
   /**
    * Initialize a newly created list of arguments.
    *
    * @param leftParenthesis the left parenthesis
    * @param arguments the expressions producing the values of the arguments
    * @param rightParenthesis the right parenthesis
    */
   ArgumentList({Token leftParenthesis, List<Expression> arguments, Token rightParenthesis}) : this.full(leftParenthesis, arguments, rightParenthesis);
+
   accept(ASTVisitor visitor) => visitor.visitArgumentList(this);
+
   Token get beginToken => _leftParenthesis;
+
   Token get endToken => _rightParenthesis;
 
   /**
    * Return the left parenthesis.
    *
    * @return the left parenthesis
    */
   Token get leftParenthesis => _leftParenthesis;
 
   /**
@@ skipping 43 matching lines @@
   }
 
   /**
    * Set the right parenthesis to the given token.
    *
    * @param parenthesis the right parenthesis
    */
   void set rightParenthesis(Token parenthesis) {
     _rightParenthesis = parenthesis;
   }
+
   void visitChildren(ASTVisitor visitor) {
     arguments.accept(visitor);
   }
 
   /**
    * If the given expression is a child of this list, and the AST structure has been resolved, and
    * the function being invoked is known based on propagated type information, and the expression
    * corresponds to one of the parameters of the function being invoked, then return the parameter
    * element representing the parameter to which the value of the given expression will be bound.
    * Otherwise, return `null`.
@@ skipping 32 matching lines @@
     if (_correspondingStaticParameters == null) {
       return null;
     }
     int index = arguments.indexOf(expression);
     if (index < 0) {
       return null;
     }
     return _correspondingStaticParameters[index];
   }
 }
+
 /**
  * Instances of the class `AsExpression` represent an 'as' expression.
  *
  * <pre>
  * asExpression ::=
  *     [Expression] 'as' [TypeName]
  * </pre>
  *
  * @coverage dart.engine.ast
  */
 class AsExpression extends Expression {
-
   /**
    * The expression used to compute the value being cast.
    */
   Expression _expression;
 
   /**
    * The as operator.
    */
   Token asOperator;
 
@@ skipping 16 matching lines @@
   }
 
   /**
    * Initialize a newly created as expression.
    *
    * @param expression the expression used to compute the value being cast
    * @param isOperator the is operator
    * @param type the name of the type being cast to
    */
   AsExpression({Expression expression, Token isOperator, TypeName type}) : this.full(expression, isOperator, type);
+
   accept(ASTVisitor visitor) => visitor.visitAsExpression(this);
+
   Token get beginToken => _expression.beginToken;
+
   Token get endToken => _type.endToken;
 
   /**
    * Return the expression used to compute the value being cast.
    *
    * @return the expression used to compute the value being cast
    */
   Expression get expression => _expression;
 
   /**
@@ skipping 13 matching lines @@
   }
 
   /**
    * Set the name of the type being cast to to the given name.
    *
    * @param name the name of the type being cast to
    */
   void set type(TypeName name) {
     this._type = becomeParentOf(name);
   }
+
   void visitChildren(ASTVisitor visitor) {
     safelyVisitChild(_expression, visitor);
     safelyVisitChild(_type, visitor);
   }
 }
+
 /**
  * Instances of the class `AssertStatement` represent an assert statement.
  *
  * <pre>
  * assertStatement ::=
  *     'assert' '(' [Expression] ')' ';'
  * </pre>
  *
  * @coverage dart.engine.ast
  */
 class AssertStatement extends Statement {
-
   /**
    * The token representing the 'assert' keyword.
    */
   Token keyword;
 
   /**
    * The left parenthesis.
    */
   Token leftParenthesis;
 
@@ skipping 32 matching lines @@
   /**
    * Initialize a newly created assert statement.
    *
    * @param keyword the token representing the 'assert' keyword
    * @param leftParenthesis the left parenthesis
    * @param condition the condition that is being asserted to be `true`
    * @param rightParenthesis the right parenthesis
    * @param semicolon the semicolon terminating the statement
    */
   AssertStatement({Token keyword, Token leftParenthesis, Expression condition, Token rightParenthesis, Token semicolon}) : this.full(keyword, leftParenthesis, condition, rightParenthesis, semicolon);
+
   accept(ASTVisitor visitor) => visitor.visitAssertStatement(this);
+
   Token get beginToken => keyword;
 
   /**
    * Return the condition that is being asserted to be `true`.
    *
    * @return the condition that is being asserted to be `true`
    */
   Expression get condition => _condition;
+
   Token get endToken => semicolon;
 
   /**
    * Set the condition that is being asserted to be `true` to the given expression.
    *
    * @param the condition that is being asserted to be `true`
    */
   void set condition(Expression condition) {
     this._condition = becomeParentOf(condition);
   }
+
   void visitChildren(ASTVisitor visitor) {
     safelyVisitChild(_condition, visitor);
   }
 }
+
 /**
  * Instances of the class `AssignmentExpression` represent an assignment expression.
  *
  * <pre>
  * assignmentExpression ::=
  *     [Expression] [Token] [Expression]
  * </pre>
  *
  * @coverage dart.engine.ast
  */
 class AssignmentExpression extends Expression {
-
   /**
    * The expression used to compute the left hand side.
    */
   Expression _leftHandSide;
 
   /**
    * The assignment operator being applied.
    */
   Token operator;
 
@@ skipping 30 matching lines @@
   }
 
   /**
    * Initialize a newly created assignment expression.
    *
    * @param leftHandSide the expression used to compute the left hand side
    * @param operator the assignment operator being applied
    * @param rightHandSide the expression used to compute the right hand side
    */
   AssignmentExpression({Expression leftHandSide, Token operator, Expression rightHandSide}) : this.full(leftHandSide, operator, rightHandSide);
+
   accept(ASTVisitor visitor) => visitor.visitAssignmentExpression(this);
+
   Token get beginToken => _leftHandSide.beginToken;
 
   /**
    * Return the best element available for this operator. If resolution was able to find a better
    * element based on type propagation, that element will be returned. Otherwise, the element found
    * using the result of static analysis will be returned. If resolution has not been performed,
    * then `null` will be returned.
    *
    * @return the best element available for this operator
    */
   MethodElement get bestElement {
     MethodElement element = propagatedElement;
     if (element == null) {
       element = staticElement;
     }
     return element;
   }
+
   Token get endToken => _rightHandSide.endToken;
 
   /**
    * Set the expression used to compute the left hand side to the given expression.
    *
    * @return the expression used to compute the left hand side
    */
   Expression get leftHandSide => _leftHandSide;
 
   /**
@@ skipping 53 matching lines @@
 
   /**
    * Set the element associated with the operator based on the static type of the left-hand-side to
    * the given element.
    *
    * @param element the static element to be associated with the operator
    */
   void set staticElement(MethodElement element) {
     _staticElement = element;
   }
+
   void visitChildren(ASTVisitor visitor) {
     safelyVisitChild(_leftHandSide, visitor);
     safelyVisitChild(_rightHandSide, visitor);
   }
 
   /**
    * If the AST structure has been resolved, and the function being invoked is known based on
    * propagated type information, then return the parameter element representing the parameter to
    * which the value of the right operand will be bound. Otherwise, return `null`.
    *
@@ skipping 27 matching lines @@
     if (_staticElement == null) {
       return null;
     }
     List<ParameterElement> parameters = _staticElement.parameters;
     if (parameters.length < 1) {
       return null;
     }
     return parameters[0];
   }
 }
+
 /**
  * Instances of the class `BinaryExpression` represent a binary (infix) expression.
  *
  * <pre>
  * binaryExpression ::=
  *     [Expression] [Token] [Expression]
  * </pre>
  *
  * @coverage dart.engine.ast
  */
 class BinaryExpression extends Expression {
-
   /**
    * The expression used to compute the left operand.
    */
   Expression _leftOperand;
 
   /**
    * The binary operator being applied.
    */
   Token operator;
 
@@ skipping 30 matching lines @@
   }
 
   /**
    * Initialize a newly created binary expression.
    *
    * @param leftOperand the expression used to compute the left operand
    * @param operator the binary operator being applied
    * @param rightOperand the expression used to compute the right operand
    */
   BinaryExpression({Expression leftOperand, Token operator, Expression rightOperand}) : this.full(leftOperand, operator, rightOperand);
+
   accept(ASTVisitor visitor) => visitor.visitBinaryExpression(this);
+
   Token get beginToken => _leftOperand.beginToken;
 
   /**
    * Return the best element available for this operator. If resolution was able to find a better
    * element based on type propagation, that element will be returned. Otherwise, the element found
    * using the result of static analysis will be returned. If resolution has not been performed,
    * then `null` will be returned.
    *
    * @return the best element available for this operator
    */
   MethodElement get bestElement {
     MethodElement element = propagatedElement;
     if (element == null) {
       element = staticElement;
     }
     return element;
   }
+
   Token get endToken => _rightOperand.endToken;
 
   /**
    * Return the expression used to compute the left operand.
    *
    * @return the expression used to compute the left operand
    */
   Expression get leftOperand => _leftOperand;
 
   /**
@@ skipping 53 matching lines @@
 
   /**
    * Set the element associated with the operator based on the static type of the left operand to
    * the given element.
    *
    * @param element the static element to be associated with the operator
    */
   void set staticElement(MethodElement element) {
     _staticElement = element;
   }
+
   void visitChildren(ASTVisitor visitor) {
     safelyVisitChild(_leftOperand, visitor);
     safelyVisitChild(_rightOperand, visitor);
   }
 
   /**
    * If the AST structure has been resolved, and the function being invoked is known based on
    * propagated type information, then return the parameter element representing the parameter to
    * which the value of the right operand will be bound. Otherwise, return `null`.
    *
@@ skipping 27 matching lines @@
     if (_staticElement == null) {
       return null;
     }
     List<ParameterElement> parameters = _staticElement.parameters;
     if (parameters.length < 1) {
       return null;
     }
     return parameters[0];
   }
 }
+
 /**
  * Instances of the class `Block` represent a sequence of statements.
  *
  * <pre>
  * block ::=
  *     '{' statement* '}'
  * </pre>
  *
  * @coverage dart.engine.ast
  */
 class Block extends Statement {
-
   /**
    * The left curly bracket.
    */
   Token leftBracket;
 
   /**
    * The statements contained in the block.
    */
   NodeList<Statement> statements;
 
@@ skipping 17 matching lines @@
   }
 
   /**
    * Initialize a newly created block of code.
    *
    * @param leftBracket the left curly bracket
    * @param statements the statements contained in the block
    * @param rightBracket the right curly bracket
    */
   Block({Token leftBracket, List<Statement> statements, Token rightBracket}) : this.full(leftBracket, statements, rightBracket);
+
   accept(ASTVisitor visitor) => visitor.visitBlock(this);
+
   Token get beginToken => leftBracket;
+
   Token get endToken => rightBracket;
+
   void visitChildren(ASTVisitor visitor) {
     statements.accept(visitor);
   }
 }
+
 /**
  * Instances of the class `BlockFunctionBody` represent a function body that consists of a
  * block of statements.
  *
  * <pre>
  * blockFunctionBody ::=
  *     [Block]
  * </pre>
  *
  * @coverage dart.engine.ast
  */
 class BlockFunctionBody extends FunctionBody {
-
   /**
    * The block representing the body of the function.
    */
   Block _block;
 
   /**
    * Initialize a newly created function body consisting of a block of statements.
    *
    * @param block the block representing the body of the function
    */
   BlockFunctionBody.full(Block block) {
     this._block = becomeParentOf(block);
   }
 
   /**
    * Initialize a newly created function body consisting of a block of statements.
    *
    * @param block the block representing the body of the function
    */
   BlockFunctionBody({Block block}) : this.full(block);
+
   accept(ASTVisitor visitor) => visitor.visitBlockFunctionBody(this);
+
   Token get beginToken => _block.beginToken;
 
   /**
    * Return the block representing the body of the function.
    *
    * @return the block representing the body of the function
    */
   Block get block => _block;
+
   Token get endToken => _block.endToken;
 
   /**
    * Set the block representing the body of the function to the given block.
    *
    * @param block the block representing the body of the function
    */
   void set block(Block block) {
     this._block = becomeParentOf(block);
   }
+
   void visitChildren(ASTVisitor visitor) {
     safelyVisitChild(_block, visitor);
   }
 }
+
 /**
  * Instances of the class `BooleanLiteral` represent a boolean literal expression.
  *
  * <pre>
  * booleanLiteral ::=
  *     'false' | 'true'
  * </pre>
  *
  * @coverage dart.engine.ast
  */
 class BooleanLiteral extends Literal {
-
   /**
    * The token representing the literal.
    */
   Token literal;
 
   /**
    * The value of the literal.
    */
   bool value = false;
 
   /**
    * Initialize a newly created boolean literal.
    *
    * @param literal the token representing the literal
    * @param value the value of the literal
    */
   BooleanLiteral.full(Token literal, bool value) {
     this.literal = literal;
     this.value = value;
   }
 
   /**
    * Initialize a newly created boolean literal.
    *
    * @param literal the token representing the literal
    * @param value the value of the literal
    */
   BooleanLiteral({Token literal, bool value}) : this.full(literal, value);
+
   accept(ASTVisitor visitor) => visitor.visitBooleanLiteral(this);
+
   Token get beginToken => literal;
+
   Token get endToken => literal;
+
   bool get isSynthetic => literal.isSynthetic;
+
   void visitChildren(ASTVisitor visitor) {
   }
 }
+
 /**
  * Instances of the class `BreakStatement` represent a break statement.
  *
  * <pre>
  * breakStatement ::=
  *     'break' [SimpleIdentifier]? ';'
  * </pre>
  *
  * @coverage dart.engine.ast
  */
 class BreakStatement extends Statement {
-
   /**
    * The token representing the 'break' keyword.
    */
   Token keyword;
 
   /**
    * The label associated with the statement, or `null` if there is no label.
    */
   SimpleIdentifier _label;
 
@@ skipping 16 matching lines @@
   }
 
   /**
    * Initialize a newly created break statement.
    *
    * @param keyword the token representing the 'break' keyword
    * @param label the label associated with the statement
    * @param semicolon the semicolon terminating the statement
    */
   BreakStatement({Token keyword, SimpleIdentifier label, Token semicolon}) : this.full(keyword, label, semicolon);
+
   accept(ASTVisitor visitor) => visitor.visitBreakStatement(this);
+
   Token get beginToken => keyword;
+
   Token get endToken => semicolon;
 
   /**
    * Return the label associated with the statement, or `null` if there is no label.
    *
    * @return the label associated with the statement
    */
   SimpleIdentifier get label => _label;
 
   /**
    * Set the label associated with the statement to the given identifier.
    *
    * @param identifier the label associated with the statement
    */
   void set label(SimpleIdentifier identifier) {
     _label = becomeParentOf(identifier);
   }
+
   void visitChildren(ASTVisitor visitor) {
     safelyVisitChild(_label, visitor);
   }
 }
+
 /**
  * Instances of the class `CascadeExpression` represent a sequence of cascaded expressions:
  * expressions that share a common target. There are three kinds of expressions that can be used in
  * a cascade expression: [IndexExpression], [MethodInvocation] and
  * [PropertyAccess].
  *
  * <pre>
  * cascadeExpression ::=
  *     [Expression] cascadeSection*
  *
  * cascadeSection ::=
  *     '..'  (cascadeSelector arguments*) (assignableSelector arguments*)* (assignmentOperator expressionWithoutCascade)?
  *
  * cascadeSelector ::=
  *     '[ ' expression '] '
  *   | identifier
  * </pre>
  *
  * @coverage dart.engine.ast
  */
 class CascadeExpression extends Expression {
-
   /**
    * The target of the cascade sections.
    */
   Expression _target;
 
   /**
    * The cascade sections sharing the common target.
    */
   NodeList<Expression> cascadeSections;
 
   /**
    * Initialize a newly created cascade expression.
    *
    * @param target the target of the cascade sections
    * @param cascadeSections the cascade sections sharing the common target
    */
   CascadeExpression.full(Expression target, List<Expression> cascadeSections) {
     this.cascadeSections = new NodeList<Expression>(this);
     this._target = becomeParentOf(target);
     this.cascadeSections.addAll(cascadeSections);
   }
 
   /**
    * Initialize a newly created cascade expression.
    *
    * @param target the target of the cascade sections
    * @param cascadeSections the cascade sections sharing the common target
    */
   CascadeExpression({Expression target, List<Expression> cascadeSections}) : this.full(target, cascadeSections);
+
   accept(ASTVisitor visitor) => visitor.visitCascadeExpression(this);
+
   Token get beginToken => _target.beginToken;
+
   Token get endToken => cascadeSections.endToken;
 
   /**
    * Return the target of the cascade sections.
    *
    * @return the target of the cascade sections
    */
   Expression get target => _target;
 
   /**
    * Set the target of the cascade sections to the given expression.
    *
    * @param target the target of the cascade sections
    */
   void set target(Expression target) {
     this._target = becomeParentOf(target);
   }
+
   void visitChildren(ASTVisitor visitor) {
     safelyVisitChild(_target, visitor);
     cascadeSections.accept(visitor);
   }
 }
+
 /**
  * Instances of the class `CatchClause` represent a catch clause within a try statement.
  *
  * <pre>
  * onPart ::=
  *     catchPart [Block]
  *   | 'on' type catchPart? [Block]
  *
  * catchPart ::=
  *     'catch' '(' [SimpleIdentifier] (',' [SimpleIdentifier])? ')'
  * </pre>
  *
  * @coverage dart.engine.ast
  */
 class CatchClause extends ASTNode {
-
   /**
    * The token representing the 'on' keyword, or `null` if there is no 'on' keyword.
    */
   Token onKeyword;
 
   /**
    * The type of exceptions caught by this catch clause, or `null` if this catch clause
    * catches every type of exception.
    */
   TypeName exceptionType;
@@ skipping 67 matching lines @@
    * @param exceptionType the type of exceptions caught by this catch clause
    * @param leftParenthesis the left parenthesis
    * @param exceptionParameter the parameter whose value will be the exception that was thrown
    * @param comma the comma separating the exception parameter from the stack trace parameter
    * @param stackTraceParameter the parameter whose value will be the stack trace associated with
    *          the exception
    * @param rightParenthesis the right parenthesis
    * @param body the body of the catch block
    */
   CatchClause({Token onKeyword, TypeName exceptionType, Token catchKeyword, Token leftParenthesis, SimpleIdentifier exceptionParameter, Token comma, SimpleIdentifier stackTraceParameter, Token rightParenthesis, Block body}) : this.full(onKeyword, exceptionType, catchKeyword, leftParenthesis, exceptionParameter, comma, stackTraceParameter, rightParenthesis, body);
+
   accept(ASTVisitor visitor) => visitor.visitCatchClause(this);
+
   Token get beginToken {
     if (onKeyword != null) {
       return onKeyword;
     }
     return catchKeyword;
   }
 
   /**
    * Return the body of the catch block.
    *
    * @return the body of the catch block
    */
   Block get body => _body;
+
   Token get endToken => _body.endToken;
 
   /**
    * Return the parameter whose value will be the exception that was thrown.
    *
    * @return the parameter whose value will be the exception that was thrown
    */
   SimpleIdentifier get exceptionParameter => _exceptionParameter;
 
   /**
@@ skipping 57 matching lines @@
   /**
    * Set the parameter whose value will be the stack trace associated with the exception to the
    * given parameter.
    *
    * @param parameter the parameter whose value will be the stack trace associated with the
    *          exception
    */
   void set stackTraceParameter(SimpleIdentifier parameter) {
     _stackTraceParameter = becomeParentOf(parameter);
   }
+
   void visitChildren(ASTVisitor visitor) {
     safelyVisitChild(exceptionType, visitor);
     safelyVisitChild(_exceptionParameter, visitor);
     safelyVisitChild(_stackTraceParameter, visitor);
     safelyVisitChild(_body, visitor);
   }
 }
+
 /**
  * Instances of the class `ClassDeclaration` represent the declaration of a class.
  *
  * <pre>
  * classDeclaration ::=
  *     'abstract'? 'class' [SimpleIdentifier] [TypeParameterList]?
  *     ([ExtendsClause] [WithClause]?)?
  *     [ImplementsClause]?
  *     '{' [ClassMember]* '}'
  * </pre>
  *
  * @coverage dart.engine.ast
  */
 class ClassDeclaration extends CompilationUnitMember {
-
   /**
    * The 'abstract' keyword, or `null` if the keyword was absent.
    */
   Token abstractKeyword;
 
   /**
    * The token representing the 'class' keyword.
    */
   Token classKeyword;
 
@@ skipping 84 matching lines @@
    * @param name the name of the class being declared
    * @param typeParameters the type parameters for the class
    * @param extendsClause the extends clause for the class
    * @param withClause the with clause for the class
    * @param implementsClause the implements clause for the class
    * @param leftBracket the left curly bracket
    * @param members the members defined by the class
    * @param rightBracket the right curly bracket
    */
   ClassDeclaration({Comment comment, List<Annotation> metadata, Token abstractKeyword, Token classKeyword, SimpleIdentifier name, TypeParameterList typeParameters, ExtendsClause extendsClause, WithClause withClause, ImplementsClause implementsClause, Token leftBracket, List<ClassMember> members, Token rightBracket}) : this.full(comment, metadata, abstractKeyword, classKeyword, name, typeParameters, extendsClause, withClause, implementsClause, leftBracket, members, rightBracket);
+
   accept(ASTVisitor visitor) => visitor.visitClassDeclaration(this);
+
   ClassElement get element => _name != null ? (_name.staticElement as ClassElement) : null;
+
   Token get endToken => rightBracket;
 
   /**
    * Return the extends clause for this class, or `null` if the class does not extend any
    * other class.
    *
    * @return the extends clause for this class
    */
   ExtendsClause get extendsClause => _extendsClause;
 
@@ skipping 47 matching lines @@
   }
 
   /**
    * Set the with clause for the class to the given clause.
    *
    * @param withClause the with clause for the class
    */
   void set withClause(WithClause withClause) {
     this._withClause = becomeParentOf(withClause);
   }
+
   void visitChildren(ASTVisitor visitor) {
     super.visitChildren(visitor);
     safelyVisitChild(_name, visitor);
     safelyVisitChild(typeParameters, visitor);
     safelyVisitChild(_extendsClause, visitor);
     safelyVisitChild(_withClause, visitor);
     safelyVisitChild(_implementsClause, visitor);
     safelyVisitChild(nativeClause, visitor);
     members.accept(visitor);
   }
+
   Token get firstTokenAfterCommentAndMetadata {
     if (abstractKeyword != null) {
       return abstractKeyword;
     }
     return classKeyword;
   }
 }
+
 /**
  * The abstract class `ClassMember` defines the behavior common to nodes that declare a name
  * within the scope of a class.
  *
  * @coverage dart.engine.ast
  */
 abstract class ClassMember extends Declaration {
-
   /**
    * Initialize a newly created member of a class.
    *
    * @param comment the documentation comment associated with this member
    * @param metadata the annotations associated with this member
    */
   ClassMember.full(Comment comment, List<Annotation> metadata) : super.full(comment, metadata);
 
   /**
    * Initialize a newly created member of a class.
    *
    * @param comment the documentation comment associated with this member
    * @param metadata the annotations associated with this member
    */
   ClassMember({Comment comment, List<Annotation> metadata}) : this.full(comment, metadata);
 }
+
 /**
  * Instances of the class `ClassTypeAlias` represent a class type alias.
  *
  * <pre>
  * classTypeAlias ::=
  *     [SimpleIdentifier] [TypeParameterList]? '=' 'abstract'? mixinApplication
  *
  * mixinApplication ::=
  *     [TypeName] [WithClause] [ImplementsClause]? ';'
  * </pre>
  *
  * @coverage dart.engine.ast
  */
 class ClassTypeAlias extends TypeAlias {
-
   /**
    * The name of the class being declared.
    */
   SimpleIdentifier _name;
 
   /**
    * The type parameters for the class, or `null` if the class does not have any type
    * parameters.
    */
   TypeParameterList _typeParameters;
@@ skipping 58 matching lines @@
    * @param name the name of the class being declared
    * @param typeParameters the type parameters for the class
    * @param equals the token for the '=' separating the name from the definition
    * @param abstractKeyword the token for the 'abstract' keyword
    * @param superclass the name of the superclass of the class being declared
    * @param withClause the with clause for this class
    * @param implementsClause the implements clause for this class
    * @param semicolon the semicolon terminating the declaration
    */
   ClassTypeAlias({Comment comment, List<Annotation> metadata, Token keyword, SimpleIdentifier name, TypeParameterList typeParameters, Token equals, Token abstractKeyword, TypeName superclass, WithClause withClause, ImplementsClause implementsClause, Token semicolon}) : this.full(comment, metadata, keyword, name, typeParameters, equals, abstractKeyword, superclass, withClause, implementsClause, semicolon);
+
   accept(ASTVisitor visitor) => visitor.visitClassTypeAlias(this);
+
   ClassElement get element => _name != null ? (_name.staticElement as ClassElement) : null;
 
   /**
    * Return the implements clause for this class, or `null` if there is no implements clause.
    *
    * @return the implements clause for this class
    */
   ImplementsClause get implementsClause => _implementsClause;
 
   /**
@@ skipping 62 matching lines @@
   }
 
   /**
    * Set the with clause for this class to the given with clause.
    *
    * @param withClause the with clause for this class
    */
   void set withClause(WithClause withClause) {
     this._withClause = becomeParentOf(withClause);
   }
+
   void visitChildren(ASTVisitor visitor) {
     super.visitChildren(visitor);
     safelyVisitChild(_name, visitor);
     safelyVisitChild(_typeParameters, visitor);
     safelyVisitChild(_superclass, visitor);
     safelyVisitChild(_withClause, visitor);
     safelyVisitChild(_implementsClause, visitor);
   }
 }
+
 /**
  * Instances of the class `Combinator` represent the combinator associated with an import
  * directive.
  *
  * <pre>
  * combinator ::=
  *     [HideCombinator]
  *   | [ShowCombinator]
  * </pre>
  *
  * @coverage dart.engine.ast
  */
 abstract class Combinator extends ASTNode {
-
   /**
    * The keyword specifying what kind of processing is to be done on the imported names.
    */
   Token keyword;
 
   /**
    * Initialize a newly created import combinator.
    *
    * @param keyword the keyword specifying what kind of processing is to be done on the imported
    *          names
    */
   Combinator.full(Token keyword) {
     this.keyword = keyword;
   }
 
   /**
    * Initialize a newly created import combinator.
    *
    * @param keyword the keyword specifying what kind of processing is to be done on the imported
    *          names
    */
   Combinator({Token keyword}) : this.full(keyword);
+
   Token get beginToken => keyword;
 }
+
 /**
  * Instances of the class `Comment` represent a comment within the source code.
  *
  * <pre>
  * comment ::=
  *     endOfLineComment
  *   | blockComment
  *   | documentationComment
  *
  * endOfLineComment ::=
  *     '//' (CHARACTER - EOL)* EOL
  *
  * blockComment ::=
  *     '/ *' CHARACTER* '&#42;/'
  *
  * documentationComment ::=
  *     '/ **' (CHARACTER | [CommentReference])* '&#42;/'
  *   | ('///' (CHARACTER - EOL)* EOL)+
  * </pre>
  *
  * @coverage dart.engine.ast
  */
 class Comment extends ASTNode {
-
   /**
    * Create a block comment.
    *
    * @param tokens the tokens representing the comment
    * @return the block comment that was created
    */
   static Comment createBlockComment(List<Token> tokens) => new Comment.full(tokens, CommentType.BLOCK, null);
 
   /**
    * Create a documentation comment.
@@ skipping 51 matching lines @@
   }
 
   /**
    * Initialize a newly created comment.
    *
    * @param tokens the tokens representing the comment
    * @param type the type of the comment
    * @param references the references embedded within the documentation comment
    */
   Comment({List<Token> tokens, CommentType type, List<CommentReference> references}) : this.full(tokens, type, references);
+
   accept(ASTVisitor visitor) => visitor.visitComment(this);
+
   Token get beginToken => tokens[0];
+
   Token get endToken => tokens[tokens.length - 1];
 
   /**
    * Return `true` if this is a block comment.
    *
    * @return `true` if this is a block comment
    */
   bool get isBlock => identical(_type, CommentType.BLOCK);
 
   /**
    * Return `true` if this is a documentation comment.
    *
    * @return `true` if this is a documentation comment
    */
   bool get isDocumentation => identical(_type, CommentType.DOCUMENTATION);
 
   /**
    * Return `true` if this is an end-of-line comment.
    *
    * @return `true` if this is an end-of-line comment
    */
   bool get isEndOfLine => identical(_type, CommentType.END_OF_LINE);
+
   void visitChildren(ASTVisitor visitor) {
     references.accept(visitor);
   }
 }
+
 /**
  * The enumeration `CommentType` encodes all the different types of comments that are
  * recognized by the parser.
  */
 class CommentType extends Enum<CommentType> {
-
   /**
    * An end-of-line comment.
    */
   static final CommentType END_OF_LINE = new CommentType('END_OF_LINE', 0);
 
   /**
    * A block comment.
    */
   static final CommentType BLOCK = new CommentType('BLOCK', 1);
 
   /**
    * A documentation comment.
    */
   static final CommentType DOCUMENTATION = new CommentType('DOCUMENTATION', 2);
+
   static final List<CommentType> values = [END_OF_LINE, BLOCK, DOCUMENTATION];
+
   CommentType(String name, int ordinal) : super(name, ordinal);
 }
+
 /**
  * Instances of the class `CommentReference` represent a reference to a Dart element that is
  * found within a documentation comment.
  *
  * <pre>
  * commentReference ::=
  *     '[' 'new'? [Identifier] ']'
  * </pre>
  *
  * @coverage dart.engine.ast
  */
 class CommentReference extends ASTNode {
-
   /**
    * The token representing the 'new' keyword, or `null` if there was no 'new' keyword.
    */
   Token newKeyword;
 
   /**
    * The identifier being referenced.
    */
   Identifier _identifier;
 
   /**
    * Initialize a newly created reference to a Dart element.
    *
    * @param newKeyword the token representing the 'new' keyword
    * @param identifier the identifier being referenced
    */
   CommentReference.full(Token newKeyword, Identifier identifier) {
     this.newKeyword = newKeyword;
     this._identifier = becomeParentOf(identifier);
   }
 
   /**
    * Initialize a newly created reference to a Dart element.
    *
    * @param newKeyword the token representing the 'new' keyword
    * @param identifier the identifier being referenced
    */
   CommentReference({Token newKeyword, Identifier identifier}) : this.full(newKeyword, identifier);
+
   accept(ASTVisitor visitor) => visitor.visitCommentReference(this);
+
   Token get beginToken => _identifier.beginToken;
+
   Token get endToken => _identifier.endToken;
 
   /**
    * Return the identifier being referenced.
    *
    * @return the identifier being referenced
    */
   Identifier get identifier => _identifier;
 
   /**
    * Set the identifier being referenced to the given identifier.
    *
    * @param identifier the identifier being referenced
    */
   void set identifier(Identifier identifier) {
     identifier = becomeParentOf(identifier);
   }
+
   void visitChildren(ASTVisitor visitor) {
     safelyVisitChild(_identifier, visitor);
   }
 }
+
 /**
  * Instances of the class `CompilationUnit` represent a compilation unit.
  *
  * While the grammar restricts the order of the directives and declarations within a compilation
  * unit, this class does not enforce those restrictions. In particular, the children of a
  * compilation unit will be visited in lexical order even if lexical order does not conform to the
  * restrictions of the grammar.
  *
  * <pre>
  * compilationUnit ::=
  *     directives declarations
  *
  * directives ::=
  *     [ScriptTag]? [LibraryDirective]? namespaceDirective* [PartDirective]*
  *   | [PartOfDirective]
  *
  * namespaceDirective ::=
  *     [ImportDirective]
  *   | [ExportDirective]
  *
  * declarations ::=
  *     [CompilationUnitMember]*
  * </pre>
  *
  * @coverage dart.engine.ast
  */
 class CompilationUnit extends ASTNode {
-
   /**
    * The first token in the token stream that was parsed to form this compilation unit.
    */
   Token _beginToken;
 
   /**
    * The script tag at the beginning of the compilation unit, or `null` if there is no script
    * tag in this compilation unit.
    */
   ScriptTag _scriptTag;
@@ skipping 47 matching lines @@
   /**
    * Initialize a newly created compilation unit to have the given directives and declarations.
    *
    * @param beginToken the first token in the token stream
    * @param scriptTag the script tag at the beginning of the compilation unit
    * @param directives the directives contained in this compilation unit
    * @param declarations the declarations contained in this compilation unit
    * @param endToken the last token in the token stream
    */
   CompilationUnit({Token beginToken, ScriptTag scriptTag, List<Directive> directives, List<CompilationUnitMember> declarations, Token endToken}) : this.full(beginToken, scriptTag, directives, declarations, endToken);
+
   accept(ASTVisitor visitor) => visitor.visitCompilationUnit(this);
+
   Token get beginToken => _beginToken;
+
   Token get endToken => _endToken;
+
   int get length {
     Token endToken = this.endToken;
     if (endToken == null) {
       return 0;
     }
     return endToken.offset + endToken.length;
   }
+
   int get offset => 0;
 
   /**
    * Return the script tag at the beginning of the compilation unit, or `null` if there is no
    * script tag in this compilation unit.
    *
    * @return the script tag at the beginning of the compilation unit
    */
   ScriptTag get scriptTag => _scriptTag;
 
   /**
    * Set the script tag at the beginning of the compilation unit to the given script tag.
    *
    * @param scriptTag the script tag at the beginning of the compilation unit
    */
   void set scriptTag(ScriptTag scriptTag) {
     this._scriptTag = becomeParentOf(scriptTag);
   }
+
   void visitChildren(ASTVisitor visitor) {
     safelyVisitChild(_scriptTag, visitor);
     if (directivesAreBeforeDeclarations()) {
       directives.accept(visitor);
       declarations.accept(visitor);
     } else {
       for (ASTNode child in sortedDirectivesAndDeclarations) {
         child.accept(visitor);
       }
     }
@@ skipping 22 matching lines @@
    */
   List<ASTNode> get sortedDirectivesAndDeclarations {
     List<ASTNode> childList = new List<ASTNode>();
     childList.addAll(directives);
     childList.addAll(declarations);
     List<ASTNode> children = new List.from(childList);
     children.sort(ASTNode.LEXICAL_ORDER);
     return children;
   }
 }
+
 /**
  * Instances of the class `CompilationUnitMember` defines the behavior common to nodes that
  * declare a name within the scope of a compilation unit.
  *
  * <pre>
  * compilationUnitMember ::=
  *     [ClassDeclaration]
  *   | [TypeAlias]
  *   | [FunctionDeclaration]
  *   | [MethodDeclaration]
  *   | [VariableDeclaration]
  *   | [VariableDeclaration]
  * </pre>
  *
  * @coverage dart.engine.ast
  */
 abstract class CompilationUnitMember extends Declaration {
-
   /**
    * Initialize a newly created generic compilation unit member.
    *
    * @param comment the documentation comment associated with this member
    * @param metadata the annotations associated with this member
    */
   CompilationUnitMember.full(Comment comment, List<Annotation> metadata) : super.full(comment, metadata);
 
   /**
    * Initialize a newly created generic compilation unit member.
    *
    * @param comment the documentation comment associated with this member
    * @param metadata the annotations associated with this member
    */
   CompilationUnitMember({Comment comment, List<Annotation> metadata}) : this.full(comment, metadata);
 }
+
 /**
  * Instances of the class `ConditionalExpression` represent a conditional expression.
  *
  * <pre>
  * conditionalExpression ::=
  *     [Expression] '?' [Expression] ':' [Expression]
  * </pre>
  *
  * @coverage dart.engine.ast
  */
 class ConditionalExpression extends Expression {
-
   /**
    * The condition used to determine which of the expressions is executed next.
    */
   Expression _condition;
 
   /**
    * The token used to separate the condition from the then expression.
    */
   Token question;
 
@@ skipping 36 matching lines @@
    *
    * @param condition the condition used to determine which expression is executed next
    * @param question the token used to separate the condition from the then expression
    * @param thenExpression the expression that is executed if the condition evaluates to
    *          `true`
    * @param colon the token used to separate the then expression from the else expression
    * @param elseExpression the expression that is executed if the condition evaluates to
    *          `false`
    */
   ConditionalExpression({Expression condition, Token question, Expression thenExpression, Token colon, Expression elseExpression}) : this.full(condition, question, thenExpression, colon, elseExpression);
+
   accept(ASTVisitor visitor) => visitor.visitConditionalExpression(this);
+
   Token get beginToken => _condition.beginToken;
 
   /**
    * Return the condition used to determine which of the expressions is executed next.
    *
    * @return the condition used to determine which expression is executed next
    */
   Expression get condition => _condition;
 
   /**
    * Return the expression that is executed if the condition evaluates to `false`.
    *
    * @return the expression that is executed if the condition evaluates to `false`
    */
   Expression get elseExpression => _elseExpression;
+
   Token get endToken => _elseExpression.endToken;
 
   /**
    * Return the expression that is executed if the condition evaluates to `true`.
    *
    * @return the expression that is executed if the condition evaluates to `true`
    */
   Expression get thenExpression => _thenExpression;
 
   /**
@@ skipping 18 matching lines @@
 
   /**
    * Set the expression that is executed if the condition evaluates to `true` to the given
    * expression.
    *
    * @param expression the expression that is executed if the condition evaluates to `true`
    */
   void set thenExpression(Expression expression) {
     _thenExpression = becomeParentOf(expression);
   }
+
   void visitChildren(ASTVisitor visitor) {
     safelyVisitChild(_condition, visitor);
     safelyVisitChild(_thenExpression, visitor);
     safelyVisitChild(_elseExpression, visitor);
   }
 }
+
 /**
  * Instances of the class `ConstructorDeclaration` represent a constructor declaration.
  *
  * <pre>
  * constructorDeclaration ::=
  *     constructorSignature [FunctionBody]?
  *   | constructorName formalParameterList ':' 'this' ('.' [SimpleIdentifier])? arguments
  *
  * constructorSignature ::=
  *     'external'? constructorName formalParameterList initializerList?
  *   | 'external'? 'factory' factoryName formalParameterList initializerList?
  *   | 'external'? 'const'  constructorName formalParameterList initializerList?
  *
  * constructorName ::=
  *     [SimpleIdentifier] ('.' [SimpleIdentifier])?
  *
  * factoryName ::=
  *     [Identifier] ('.' [SimpleIdentifier])?
  *
  * initializerList ::=
  *     ':' [ConstructorInitializer] (',' [ConstructorInitializer])*
  * </pre>
  *
  * @coverage dart.engine.ast
  */
 class ConstructorDeclaration extends ClassMember {
-
   /**
    * The token for the 'external' keyword, or `null` if the constructor is not external.
    */
   Token externalKeyword;
 
   /**
    * The token for the 'const' keyword, or `null` if the constructor is not a const
    * constructor.
    */
   Token constKeyword;
@@ skipping 99 matching lines @@
    * @param period the token for the period before the constructor name
    * @param name the name of the constructor
    * @param parameters the parameters associated with the constructor
    * @param separator the token for the colon or equals before the initializers
    * @param initializers the initializers associated with the constructor
    * @param redirectedConstructor the name of the constructor to which this constructor will be
    *          redirected
    * @param body the body of the constructor
    */
   ConstructorDeclaration({Comment comment, List<Annotation> metadata, Token externalKeyword, Token constKeyword, Token factoryKeyword, Identifier returnType, Token period, SimpleIdentifier name, FormalParameterList parameters, Token separator, List<ConstructorInitializer> initializers, ConstructorName redirectedConstructor, FunctionBody body}) : this.full(comment, metadata, externalKeyword, constKeyword, factoryKeyword, returnType, period, name, parameters, separator, initializers, redirectedConstructor, body);
+
   accept(ASTVisitor visitor) => visitor.visitConstructorDeclaration(this);
 
   /**
    * Return the body of the constructor, or `null` if the constructor does not have a body.
    *
    * @return the body of the constructor
    */
   FunctionBody get body => _body;
+
   ConstructorElement get element => _element;
+
   Token get endToken {
     if (_body != null) {
       return _body.endToken;
     } else if (!initializers.isEmpty) {
       return initializers.endToken;
     }
     return _parameters.endToken;
   }
 
   /**
@@ skipping 76 matching lines @@
   }
 
   /**
    * Set the type of object being created to the given type name.
    *
    * @param typeName the type of object being created
    */
   void set returnType(Identifier typeName) {
     _returnType = becomeParentOf(typeName);
   }
+
   void visitChildren(ASTVisitor visitor) {
     super.visitChildren(visitor);
     safelyVisitChild(_returnType, visitor);
     safelyVisitChild(_name, visitor);
     safelyVisitChild(_parameters, visitor);
     initializers.accept(visitor);
     safelyVisitChild(_redirectedConstructor, visitor);
     safelyVisitChild(_body, visitor);
   }
+
   Token get firstTokenAfterCommentAndMetadata {
     Token leftMost = this.leftMost([externalKeyword, constKeyword, factoryKeyword]);
     if (leftMost != null) {
       return leftMost;
     }
     return _returnType.beginToken;
   }
 
   /**
    * Return the left-most of the given tokens, or `null` if there are no tokens given or if
    * all of the given tokens are `null`.
    *
    * @param tokens the tokens being compared to find the left-most token
    * @return the left-most of the given tokens
    */
   Token leftMost(List<Token> tokens) {
     Token leftMost = null;
     int offset = 2147483647;
     for (Token token in tokens) {
       if (token != null && token.offset < offset) {
         leftMost = token;
       }
     }
     return leftMost;
   }
 }
+
 /**
  * Instances of the class `ConstructorFieldInitializer` represent the initialization of a
  * field within a constructor's initialization list.
  *
  * <pre>
  * fieldInitializer ::=
  *     ('this' '.')? [SimpleIdentifier] '=' [Expression]
  * </pre>
  *
  * @coverage dart.engine.ast
  */
 class ConstructorFieldInitializer extends ConstructorInitializer {
-
   /**
    * The token for the 'this' keyword, or `null` if there is no 'this' keyword.
    */
   Token keyword;
 
   /**
    * The token for the period after the 'this' keyword, or `null` if there is no 'this'
    * keyword.
    */
   Token period;
@@ skipping 35 matching lines @@
    * Initialize a newly created field initializer to initialize the field with the given name to the
    * value of the given expression.
    *
    * @param keyword the token for the 'this' keyword
    * @param period the token for the period after the 'this' keyword
    * @param fieldName the name of the field being initialized
    * @param equals the token for the equal sign between the field name and the expression
    * @param expression the expression computing the value to which the field will be initialized
    */
   ConstructorFieldInitializer({Token keyword, Token period, SimpleIdentifier fieldName, Token equals, Expression expression}) : this.full(keyword, period, fieldName, equals, expression);
+
   accept(ASTVisitor visitor) => visitor.visitConstructorFieldInitializer(this);
+
   Token get beginToken {
     if (keyword != null) {
       return keyword;
     }
     return _fieldName.beginToken;
   }
+
   Token get endToken => _expression.endToken;
 
   /**
    * Return the expression computing the value to which the field will be initialized.
    *
    * @return the expression computing the value to which the field will be initialized
    */
   Expression get expression => _expression;
 
   /**
@@ skipping 14 matching lines @@
   }
 
   /**
    * Set the name of the field being initialized to the given identifier.
    *
    * @param identifier the name of the field being initialized
    */
   void set fieldName(SimpleIdentifier identifier) {
     _fieldName = becomeParentOf(identifier);
   }
+
   void visitChildren(ASTVisitor visitor) {
     safelyVisitChild(_fieldName, visitor);
     safelyVisitChild(_expression, visitor);
   }
 }
+
 /**
  * Instances of the class `ConstructorInitializer` defines the behavior of nodes that can
  * occur in the initializer list of a constructor declaration.
  *
  * <pre>
  * constructorInitializer ::=
  *     [SuperConstructorInvocation]
  *   | [ConstructorFieldInitializer]
  * </pre>
  *
  * @coverage dart.engine.ast
  */
 abstract class ConstructorInitializer extends ASTNode {
 }
+
 /**
  * Instances of the class `ConstructorName` represent the name of the constructor.
  *
  * <pre>
  * constructorName:
  *     type ('.' identifier)?
  * </pre>
  *
  * @coverage dart.engine.ast
  */
 class ConstructorName extends ASTNode {
-
   /**
    * The name of the type defining the constructor.
    */
   TypeName _type;
 
   /**
    * The token for the period before the constructor name, or `null` if the specified
    * constructor is the unnamed constructor.
    */
   Token period;
@@ skipping 25 matching lines @@
   }
 
   /**
    * Initialize a newly created constructor name.
    *
    * @param type the name of the type defining the constructor
    * @param period the token for the period before the constructor name
    * @param name the name of the constructor
    */
   ConstructorName({TypeName type, Token period, SimpleIdentifier name}) : this.full(type, period, name);
+
   accept(ASTVisitor visitor) => visitor.visitConstructorName(this);
+
   Token get beginToken => _type.beginToken;
+
   Token get endToken {
     if (_name != null) {
       return _name.endToken;
     }
     return _type.endToken;
   }
 
   /**
    * Return the name of the constructor, or `null` if the specified constructor is the unnamed
    * constructor.
@@ skipping 38 matching lines @@
   }
 
   /**
    * Set the name of the type defining the constructor to the given type name.
    *
    * @param type the name of the type defining the constructor
    */
   void set type(TypeName type) {
     this._type = becomeParentOf(type);
   }
+
   void visitChildren(ASTVisitor visitor) {
     safelyVisitChild(_type, visitor);
     safelyVisitChild(_name, visitor);
   }
 }
+
 /**
  * Instances of the class `ContinueStatement` represent a continue statement.
  *
  * <pre>
  * continueStatement ::=
  *     'continue' [SimpleIdentifier]? ';'
  * </pre>
  *
  * @coverage dart.engine.ast
  */
 class ContinueStatement extends Statement {
-
   /**
    * The token representing the 'continue' keyword.
    */
   Token keyword;
 
   /**
    * The label associated with the statement, or `null` if there is no label.
    */
   SimpleIdentifier _label;
 
@@ skipping 16 matching lines @@
   }
 
   /**
    * Initialize a newly created continue statement.
    *
    * @param keyword the token representing the 'continue' keyword
    * @param label the label associated with the statement
    * @param semicolon the semicolon terminating the statement
    */
   ContinueStatement({Token keyword, SimpleIdentifier label, Token semicolon}) : this.full(keyword, label, semicolon);
+
   accept(ASTVisitor visitor) => visitor.visitContinueStatement(this);
+
   Token get beginToken => keyword;
+
   Token get endToken => semicolon;
 
   /**
    * Return the label associated with the statement, or `null` if there is no label.
    *
    * @return the label associated with the statement
    */
   SimpleIdentifier get label => _label;
 
   /**
    * Set the label associated with the statement to the given label.
    *
    * @param identifier the label associated with the statement
    */
   void set label(SimpleIdentifier identifier) {
     _label = becomeParentOf(identifier);
   }
+
   void visitChildren(ASTVisitor visitor) {
     safelyVisitChild(_label, visitor);
   }
 }
+
 /**
  * The abstract class `Declaration` defines the behavior common to nodes that represent the
  * declaration of a name. Each declared name is visible within a name scope.
  *
  * @coverage dart.engine.ast
  */
 abstract class Declaration extends AnnotatedNode {
-
   /**
    * Initialize a newly created declaration.
    *
    * @param comment the documentation comment associated with this declaration
    * @param metadata the annotations associated with this declaration
    */
   Declaration.full(Comment comment, List<Annotation> metadata) : super.full(comment, metadata);
 
   /**
    * Initialize a newly created declaration.
    *
    * @param comment the documentation comment associated with this declaration
    * @param metadata the annotations associated with this declaration
    */
   Declaration({Comment comment, List<Annotation> metadata}) : this.full(comment, metadata);
 
   /**
    * Return the element associated with this declaration, or `null` if either this node
    * corresponds to a list of declarations or if the AST structure has not been resolved.
    *
    * @return the element associated with this declaration
    */
   Element get element;
 }
+
 /**
  * Instances of the class `DeclaredIdentifier` represent the declaration of a single
  * identifier.
  *
  * <pre>
  * declaredIdentifier ::=
  *     ([Annotation] finalConstVarOrType [SimpleIdentifier]
  * </pre>
  *
  * @coverage dart.engine.ast
  */
 class DeclaredIdentifier extends Declaration {
-
   /**
    * The token representing either the 'final', 'const' or 'var' keyword, or `null` if no
    * keyword was used.
    */
   Token keyword;
 
   /**
    * The name of the declared type of the parameter, or `null` if the parameter does not have
    * a declared type.
    */
@@ skipping 22 matching lines @@
   /**
    * Initialize a newly created formal parameter.
    *
    * @param comment the documentation comment associated with this parameter
    * @param metadata the annotations associated with this parameter
    * @param keyword the token representing either the 'final', 'const' or 'var' keyword
    * @param type the name of the declared type of the parameter
    * @param identifier the name of the parameter being declared
    */
   DeclaredIdentifier({Comment comment, List<Annotation> metadata, Token keyword, TypeName type, SimpleIdentifier identifier}) : this.full(comment, metadata, keyword, type, identifier);
+
   accept(ASTVisitor visitor) => visitor.visitDeclaredIdentifier(this);
+
   LocalVariableElement get element {
     SimpleIdentifier identifier = this.identifier;
     if (identifier == null) {
       return null;
     }
     return identifier.staticElement as LocalVariableElement;
   }
+
   Token get endToken => identifier.endToken;
 
   /**
    * Return the name of the declared type of the parameter, or `null` if the parameter does
    * not have a declared type.
    *
    * @return the name of the declared type of the parameter
    */
   TypeName get type => _type;
 
   /**
    * Return `true` if this variable was declared with the 'const' modifier.
    *
    * @return `true` if this variable was declared with the 'const' modifier
    */
-  bool get isConst => (keyword is KeywordToken) && identical(((keyword as KeywordToken)).keyword, Keyword.CONST);
+  bool get isConst => (keyword is KeywordToken) && identical((keyword as KeywordToken).keyword, Keyword.CONST);
 
   /**
    * Return `true` if this variable was declared with the 'final' modifier. Variables that are
    * declared with the 'const' modifier will return `false` even though they are implicitly
    * final.
    *
    * @return `true` if this variable was declared with the 'final' modifier
    */
-  bool get isFinal => (keyword is KeywordToken) && identical(((keyword as KeywordToken)).keyword, Keyword.FINAL);
+  bool get isFinal => (keyword is KeywordToken) && identical((keyword as KeywordToken).keyword, Keyword.FINAL);
 
   /**
    * Set the name of the declared type of the parameter to the given type name.
    *
    * @param typeName the name of the declared type of the parameter
    */
   void set type(TypeName typeName) {
     _type = becomeParentOf(typeName);
   }
+
   void visitChildren(ASTVisitor visitor) {
     super.visitChildren(visitor);
     safelyVisitChild(_type, visitor);
     safelyVisitChild(identifier, visitor);
   }
+
   Token get firstTokenAfterCommentAndMetadata {
     if (keyword != null) {
       return keyword;
     } else if (_type != null) {
       return _type.beginToken;
     }
     return identifier.beginToken;
   }
 }
+
 /**
  * Instances of the class `DefaultFormalParameter` represent a formal parameter with a default
  * value. There are two kinds of parameters that are both represented by this class: named formal
  * parameters and positional formal parameters.
  *
  * <pre>
  * defaultFormalParameter ::=
  *     [NormalFormalParameter] ('=' [Expression])?
  *
  * defaultNamedParameter ::=
  *     [NormalFormalParameter] (':' [Expression])?
  * </pre>
  *
  * @coverage dart.engine.ast
  */
 class DefaultFormalParameter extends FormalParameter {
-
   /**
    * The formal parameter with which the default value is associated.
    */
   NormalFormalParameter _parameter;
 
   /**
    * The kind of this parameter.
    */
   ParameterKind _kind;
 
@@ skipping 26 matching lines @@
 
   /**
    * Initialize a newly created default formal parameter.
    *
    * @param parameter the formal parameter with which the default value is associated
    * @param kind the kind of this parameter
    * @param separator the token separating the parameter from the default value
    * @param defaultValue the expression computing the default value for the parameter
    */
   DefaultFormalParameter({NormalFormalParameter parameter, ParameterKind kind, Token separator, Expression defaultValue}) : this.full(parameter, kind, separator, defaultValue);
+
   accept(ASTVisitor visitor) => visitor.visitDefaultFormalParameter(this);
+
   Token get beginToken => _parameter.beginToken;
 
   /**
    * Return the expression computing the default value for the parameter, or `null` if there
    * is no default value.
    *
    * @return the expression computing the default value for the parameter
    */
   Expression get defaultValue => _defaultValue;
+
   Token get endToken {
     if (_defaultValue != null) {
       return _defaultValue.endToken;
     }
     return _parameter.endToken;
   }
+
   SimpleIdentifier get identifier => _parameter.identifier;
+
   ParameterKind get kind => _kind;
 
   /**
    * Return the formal parameter with which the default value is associated.
    *
    * @return the formal parameter with which the default value is associated
    */
   NormalFormalParameter get parameter => _parameter;
+
   bool get isConst => _parameter != null && _parameter.isConst;
+
   bool get isFinal => _parameter != null && _parameter.isFinal;
 
   /**
    * Set the expression computing the default value for the parameter to the given expression.
    *
    * @param expression the expression computing the default value for the parameter
    */
   void set defaultValue(Expression expression) {
     _defaultValue = becomeParentOf(expression);
   }
 
   /**
    * Set the kind of this parameter to the given kind.
    *
    * @param kind the kind of this parameter
    */
   void set kind(ParameterKind kind) {
     this._kind = kind;
   }
 
   /**
    * Set the formal parameter with which the default value is associated to the given parameter.
    *
    * @param formalParameter the formal parameter with which the default value is associated
    */
   void set parameter(NormalFormalParameter formalParameter) {
     _parameter = becomeParentOf(formalParameter);
   }
+
   void visitChildren(ASTVisitor visitor) {
     safelyVisitChild(_parameter, visitor);
     safelyVisitChild(_defaultValue, visitor);
   }
 }
+
 /**
  * The abstract class `Directive` defines the behavior common to nodes that represent a
  * directive.
  *
  * <pre>
  * directive ::=
  *     [ExportDirective]
  *   | [ImportDirective]
  *   | [LibraryDirective]
  *   | [PartDirective]
  *   | [PartOfDirective]
  * </pre>
  *
  * @coverage dart.engine.ast
  */
 abstract class Directive extends AnnotatedNode {
-
   /**
    * The element associated with this directive, or `null` if the AST structure has not been
    * resolved or if this directive could not be resolved.
    */
   Element _element;
 
   /**
    * Initialize a newly create directive.
    *
    * @param comment the documentation comment associated with this directive
@@ skipping 28 matching lines @@
 
   /**
    * Set the element associated with this directive to the given element.
    *
    * @param element the element associated with this directive
    */
   void set element(Element element) {
     this._element = element;
   }
 }
+
 /**
  * Instances of the class `DoStatement` represent a do statement.
  *
  * <pre>
  * doStatement ::=
  *     'do' [Statement] 'while' '(' [Expression] ')' ';'
  * </pre>
  *
  * @coverage dart.engine.ast
  */
 class DoStatement extends Statement {
-
   /**
    * The token representing the 'do' keyword.
    */
   Token doKeyword;
 
   /**
    * The body of the loop.
    */
   Statement _body;
 
@@ skipping 48 matching lines @@
    *
    * @param doKeyword the token representing the 'do' keyword
    * @param body the body of the loop
    * @param whileKeyword the token representing the 'while' keyword
    * @param leftParenthesis the left parenthesis
    * @param condition the condition that determines when the loop will terminate
    * @param rightParenthesis the right parenthesis
    * @param semicolon the semicolon terminating the statement
    */
   DoStatement({Token doKeyword, Statement body, Token whileKeyword, Token leftParenthesis, Expression condition, Token rightParenthesis, Token semicolon}) : this.full(doKeyword, body, whileKeyword, leftParenthesis, condition, rightParenthesis, semicolon);
+
   accept(ASTVisitor visitor) => visitor.visitDoStatement(this);
+
   Token get beginToken => doKeyword;
 
   /**
    * Return the body of the loop.
    *
    * @return the body of the loop
    */
   Statement get body => _body;
 
   /**
    * Return the condition that determines when the loop will terminate.
    *
    * @return the condition that determines when the loop will terminate
    */
   Expression get condition => _condition;
+
   Token get endToken => semicolon;
 
   /**
    * Return the left parenthesis.
    *
    * @return the left parenthesis
    */
   Token get leftParenthesis => _leftParenthesis;
 
   /**
@@ skipping 31 matching lines @@
   }
 
   /**
    * Set the right parenthesis to the given token.
    *
    * @param parenthesis the right parenthesis
    */
   void set rightParenthesis(Token parenthesis) {
     _rightParenthesis = parenthesis;
   }
+
   void visitChildren(ASTVisitor visitor) {
     safelyVisitChild(_body, visitor);
     safelyVisitChild(_condition, visitor);
   }
 }
+
 /**
  * Instances of the class `DoubleLiteral` represent a floating point literal expression.
  *
  * <pre>
  * doubleLiteral ::=
  *     decimalDigit+ ('.' decimalDigit*)? exponent?
  *   | '.' decimalDigit+ exponent?
  *
  * exponent ::=
  *     ('e' | 'E') ('+' | '-')? decimalDigit+
  * </pre>
  *
  * @coverage dart.engine.ast
  */
 class DoubleLiteral extends Literal {
-
   /**
    * The token representing the literal.
    */
   Token literal;
 
   /**
    * The value of the literal.
    */
   double value = 0.0;
 
   /**
    * Initialize a newly created floating point literal.
    *
    * @param literal the token representing the literal
    * @param value the value of the literal
    */
   DoubleLiteral.full(Token literal, double value) {
     this.literal = literal;
     this.value = value;
   }
 
   /**
    * Initialize a newly created floating point literal.
    *
    * @param literal the token representing the literal
    * @param value the value of the literal
    */
   DoubleLiteral({Token literal, double value}) : this.full(literal, value);
+
   accept(ASTVisitor visitor) => visitor.visitDoubleLiteral(this);
+
   Token get beginToken => literal;
+
   Token get endToken => literal;
+
   void visitChildren(ASTVisitor visitor) {
   }
 }
+
 /**
  * Instances of the class `EmptyFunctionBody` represent an empty function body, which can only
  * appear in constructors or abstract methods.
  *
  * <pre>
  * emptyFunctionBody ::=
  *     ';'
  * </pre>
  *
  * @coverage dart.engine.ast
  */
 class EmptyFunctionBody extends FunctionBody {
-
   /**
    * The token representing the semicolon that marks the end of the function body.
    */
   Token semicolon;
 
   /**
    * Initialize a newly created function body.
    *
    * @param semicolon the token representing the semicolon that marks the end of the function body
    */
   EmptyFunctionBody.full(Token semicolon) {
     this.semicolon = semicolon;
   }
 
   /**
    * Initialize a newly created function body.
    *
    * @param semicolon the token representing the semicolon that marks the end of the function body
    */
   EmptyFunctionBody({Token semicolon}) : this.full(semicolon);
+
   accept(ASTVisitor visitor) => visitor.visitEmptyFunctionBody(this);
+
   Token get beginToken => semicolon;
+
   Token get endToken => semicolon;
+
   void visitChildren(ASTVisitor visitor) {
   }
 }
+
 /**
  * Instances of the class `EmptyStatement` represent an empty statement.
  *
  * <pre>
  * emptyStatement ::=
  *     ';'
  * </pre>
  *
  * @coverage dart.engine.ast
  */
 class EmptyStatement extends Statement {
-
   /**
    * The semicolon terminating the statement.
    */
   Token semicolon;
 
   /**
    * Initialize a newly created empty statement.
    *
    * @param semicolon the semicolon terminating the statement
    */
   EmptyStatement.full(Token semicolon) {
     this.semicolon = semicolon;
   }
 
   /**
    * Initialize a newly created empty statement.
    *
    * @param semicolon the semicolon terminating the statement
    */
   EmptyStatement({Token semicolon}) : this.full(semicolon);
+
   accept(ASTVisitor visitor) => visitor.visitEmptyStatement(this);
+
   Token get beginToken => semicolon;
+
   Token get endToken => semicolon;
+
   void visitChildren(ASTVisitor visitor) {
   }
 }
+
 /**
  * Ephemeral identifiers are created as needed to mimic the presence of an empty identifier.
  *
  * @coverage dart.engine.ast
  */
 class EphemeralIdentifier extends SimpleIdentifier {
   EphemeralIdentifier.full(ASTNode parent, int location) : super.full(new Token(TokenType.IDENTIFIER, location)) {
     parent.becomeParentOf(this);
   }
+
   EphemeralIdentifier({ASTNode parent, int location}) : this.full(parent, location);
 }
+
 /**
  * Instances of the class `ExportDirective` represent an export directive.
  *
  * <pre>
  * exportDirective ::=
  *     [Annotation] 'export' [StringLiteral] [Combinator]* ';'
  * </pre>
  *
  * @coverage dart.engine.ast
  */
 class ExportDirective extends NamespaceDirective {
-
   /**
    * Initialize a newly created export directive.
    *
    * @param comment the documentation comment associated with this directive
    * @param metadata the annotations associated with the directive
    * @param keyword the token representing the 'export' keyword
    * @param libraryUri the URI of the library being exported
    * @param combinators the combinators used to control which names are exported
    * @param semicolon the semicolon terminating the directive
    */
   ExportDirective.full(Comment comment, List<Annotation> metadata, Token keyword, StringLiteral libraryUri, List<Combinator> combinators, Token semicolon) : super.full(comment, metadata, keyword, libraryUri, combinators, semicolon);
 
   /**
    * Initialize a newly created export directive.
    *
    * @param comment the documentation comment associated with this directive
    * @param metadata the annotations associated with the directive
    * @param keyword the token representing the 'export' keyword
    * @param libraryUri the URI of the library being exported
    * @param combinators the combinators used to control which names are exported
    * @param semicolon the semicolon terminating the directive
    */
   ExportDirective({Comment comment, List<Annotation> metadata, Token keyword, StringLiteral libraryUri, List<Combinator> combinators, Token semicolon}) : this.full(comment, metadata, keyword, libraryUri, combinators, semicolon);
+
   accept(ASTVisitor visitor) => visitor.visitExportDirective(this);
+
   LibraryElement get uriElement {
     Element element = this.element;
     if (element is ExportElement) {
-      return ((element as ExportElement)).exportedLibrary;
+      return (element as ExportElement).exportedLibrary;
     }
     return null;
   }
+
   void visitChildren(ASTVisitor visitor) {
     super.visitChildren(visitor);
     combinators.accept(visitor);
   }
 }
+
 /**
  * Instances of the class `Expression` defines the behavior common to nodes that represent an
  * expression.
  *
  * <pre>
  * expression ::=
  *     [AssignmentExpression]
  *   | [ConditionalExpression] cascadeSection*
  *   | [ThrowExpression]
  * </pre>
  *
  * @coverage dart.engine.ast
  */
 abstract class Expression extends ASTNode {
-
   /**
    * The static type of this expression, or `null` if the AST structure has not been resolved.
    */
   Type2 staticType;
 
   /**
    * The propagated type of this expression, or `null` if type propagation has not been
    * performed on the AST structure.
    */
   Type2 propagatedType;
@@ skipping 37 matching lines @@
    * expression corresponds to one of the parameters of the function being invoked, then return the
    * parameter element representing the parameter to which the value of this expression will be
    * bound. Otherwise, return `null`.
    *
    * @return the parameter element representing the parameter to which the value of this expression
    *         will be bound
    */
   ParameterElement get propagatedParameterElement {
     ASTNode parent = this.parent;
     if (parent is ArgumentList) {
-      return ((parent as ArgumentList)).getPropagatedParameterElementFor(this);
+      return (parent as ArgumentList).getPropagatedParameterElementFor(this);
     } else if (parent is IndexExpression) {
       IndexExpression indexExpression = parent as IndexExpression;
       if (identical(indexExpression.index, this)) {
         return indexExpression.propagatedParameterElementForIndex;
       }
     } else if (parent is BinaryExpression) {
       BinaryExpression binaryExpression = parent as BinaryExpression;
       if (identical(binaryExpression.rightOperand, this)) {
         return binaryExpression.propagatedParameterElementForRightOperand;
       }
     } else if (parent is AssignmentExpression) {
       AssignmentExpression assignmentExpression = parent as AssignmentExpression;
       if (identical(assignmentExpression.rightHandSide, this)) {
         return assignmentExpression.propagatedParameterElementForRightHandSide;
       }
     } else if (parent is PrefixExpression) {
-      return ((parent as PrefixExpression)).propagatedParameterElementForOperand;
+      return (parent as PrefixExpression).propagatedParameterElementForOperand;
     } else if (parent is PostfixExpression) {
-      return ((parent as PostfixExpression)).propagatedParameterElementForOperand;
+      return (parent as PostfixExpression).propagatedParameterElementForOperand;
     }
     return null;
   }
 
   /**
    * If this expression is an argument to an invocation, and the AST structure has been resolved,
    * and the function being invoked is known based on static type information, and this expression
    * corresponds to one of the parameters of the function being invoked, then return the parameter
    * element representing the parameter to which the value of this expression will be bound.
    * Otherwise, return `null`.
    *
    * @return the parameter element representing the parameter to which the value of this expression
    *         will be bound
    */
   ParameterElement get staticParameterElement {
     ASTNode parent = this.parent;
     if (parent is ArgumentList) {
-      return ((parent as ArgumentList)).getStaticParameterElementFor(this);
+      return (parent as ArgumentList).getStaticParameterElementFor(this);
     } else if (parent is IndexExpression) {
       IndexExpression indexExpression = parent as IndexExpression;
       if (identical(indexExpression.index, this)) {
         return indexExpression.staticParameterElementForIndex;
       }
     } else if (parent is BinaryExpression) {
       BinaryExpression binaryExpression = parent as BinaryExpression;
       if (identical(binaryExpression.rightOperand, this)) {
         return binaryExpression.staticParameterElementForRightOperand;
       }
     } else if (parent is AssignmentExpression) {
       AssignmentExpression assignmentExpression = parent as AssignmentExpression;
       if (identical(assignmentExpression.rightHandSide, this)) {
         return assignmentExpression.staticParameterElementForRightHandSide;
       }
     } else if (parent is PrefixExpression) {
-      return ((parent as PrefixExpression)).staticParameterElementForOperand;
+      return (parent as PrefixExpression).staticParameterElementForOperand;
     } else if (parent is PostfixExpression) {
-      return ((parent as PostfixExpression)).staticParameterElementForOperand;
+      return (parent as PostfixExpression).staticParameterElementForOperand;
     }
     return null;
   }
 
   /**
    * Return `true` if this expression is syntactically valid for the LHS of an
    * [AssignmentExpression].
    *
    * @return `true` if this expression matches the `assignableExpression` production
    */
   bool get isAssignable => false;
 }
+
 /**
  * Instances of the class `ExpressionFunctionBody` represent a function body consisting of a
  * single expression.
  *
  * <pre>
  * expressionFunctionBody ::=
  *     '=>' [Expression] ';'
  * </pre>
  *
  * @coverage dart.engine.ast
  */
 class ExpressionFunctionBody extends FunctionBody {
-
   /**
    * The token introducing the expression that represents the body of the function.
    */
   Token functionDefinition;
 
   /**
    * The expression representing the body of the function.
    */
   Expression _expression;
 
@@ skipping 18 matching lines @@
 
   /**
    * Initialize a newly created function body consisting of a block of statements.
    *
    * @param functionDefinition the token introducing the expression that represents the body of the
    *          function
    * @param expression the expression representing the body of the function
    * @param semicolon the semicolon terminating the statement
    */
   ExpressionFunctionBody({Token functionDefinition, Expression expression, Token semicolon}) : this.full(functionDefinition, expression, semicolon);
+
   accept(ASTVisitor visitor) => visitor.visitExpressionFunctionBody(this);
+
   Token get beginToken => functionDefinition;
+
   Token get endToken {
     if (semicolon != null) {
       return semicolon;
     }
     return _expression.endToken;
   }
 
   /**
    * Return the expression representing the body of the function.
    *
    * @return the expression representing the body of the function
    */
   Expression get expression => _expression;
 
   /**
    * Set the expression representing the body of the function to the given expression.
    *
    * @param expression the expression representing the body of the function
    */
   void set expression(Expression expression) {
     this._expression = becomeParentOf(expression);
   }
+
   void visitChildren(ASTVisitor visitor) {
     safelyVisitChild(_expression, visitor);
   }
 }
+
 /**
  * Instances of the class `ExpressionStatement` wrap an expression as a statement.
  *
  * <pre>
  * expressionStatement ::=
  *     [Expression]? ';'
  * </pre>
  *
  * @coverage dart.engine.ast
  */
 class ExpressionStatement extends Statement {
-
   /**
    * The expression that comprises the statement.
    */
   Expression _expression;
 
   /**
    * The semicolon terminating the statement, or `null` if the expression is a function
    * expression and therefore isn't followed by a semicolon.
    */
   Token semicolon;
 
   /**
    * Initialize a newly created expression statement.
    *
    * @param expression the expression that comprises the statement
    * @param semicolon the semicolon terminating the statement
    */
   ExpressionStatement.full(Expression expression, Token semicolon) {
     this._expression = becomeParentOf(expression);
     this.semicolon = semicolon;
   }
 
   /**
    * Initialize a newly created expression statement.
    *
    * @param expression the expression that comprises the statement
    * @param semicolon the semicolon terminating the statement
    */
   ExpressionStatement({Expression expression, Token semicolon}) : this.full(expression, semicolon);
+
   accept(ASTVisitor visitor) => visitor.visitExpressionStatement(this);
+
   Token get beginToken => _expression.beginToken;
+
   Token get endToken {
     if (semicolon != null) {
       return semicolon;
     }
     return _expression.endToken;
   }
 
   /**
    * Return the expression that comprises the statement.
    *
    * @return the expression that comprises the statement
    */
   Expression get expression => _expression;
+
   bool get isSynthetic => _expression.isSynthetic && semicolon.isSynthetic;
 
   /**
    * Set the expression that comprises the statement to the given expression.
    *
    * @param expression the expression that comprises the statement
    */
   void set expression(Expression expression) {
     this._expression = becomeParentOf(expression);
   }
+
   void visitChildren(ASTVisitor visitor) {
     safelyVisitChild(_expression, visitor);
   }
 }
+
 /**
  * Instances of the class `ExtendsClause` represent the "extends" clause in a class
  * declaration.
  *
  * <pre>
  * extendsClause ::=
  *     'extends' [TypeName]
  * </pre>
  *
  * @coverage dart.engine.ast
  */
 class ExtendsClause extends ASTNode {
-
   /**
    * The token representing the 'extends' keyword.
    */
   Token keyword;
 
   /**
    * The name of the class that is being extended.
    */
   TypeName _superclass;
 
   /**
    * Initialize a newly created extends clause.
    *
    * @param keyword the token representing the 'extends' keyword
    * @param superclass the name of the class that is being extended
    */
   ExtendsClause.full(Token keyword, TypeName superclass) {
     this.keyword = keyword;
     this._superclass = becomeParentOf(superclass);
   }
 
   /**
    * Initialize a newly created extends clause.
    *
    * @param keyword the token representing the 'extends' keyword
    * @param superclass the name of the class that is being extended
    */
   ExtendsClause({Token keyword, TypeName superclass}) : this.full(keyword, superclass);
+
   accept(ASTVisitor visitor) => visitor.visitExtendsClause(this);
+
   Token get beginToken => keyword;
+
   Token get endToken => _superclass.endToken;
 
   /**
    * Return the name of the class that is being extended.
    *
    * @return the name of the class that is being extended
    */
   TypeName get superclass => _superclass;
 
   /**
    * Set the name of the class that is being extended to the given name.
    *
    * @param name the name of the class that is being extended
    */
   void set superclass(TypeName name) {
     _superclass = becomeParentOf(name);
   }
+
   void visitChildren(ASTVisitor visitor) {
     safelyVisitChild(_superclass, visitor);
   }
 }
+
 /**
  * Instances of the class `FieldDeclaration` represent the declaration of one or more fields
  * of the same type.
  *
  * <pre>
  * fieldDeclaration ::=
  *     'static'? [VariableDeclarationList] ';'
  * </pre>
  *
  * @coverage dart.engine.ast
  */
 class FieldDeclaration extends ClassMember {
-
   /**
    * The token representing the 'static' keyword, or `null` if the fields are not static.
    */
   Token staticKeyword;
 
   /**
    * The fields being declared.
    */
   VariableDeclarationList _fieldList;
 
@@ skipping 20 matching lines @@
   /**
    * Initialize a newly created field declaration.
    *
    * @param comment the documentation comment associated with this field
    * @param metadata the annotations associated with this field
    * @param staticKeyword the token representing the 'static' keyword
    * @param fieldList the fields being declared
    * @param semicolon the semicolon terminating the declaration
    */
   FieldDeclaration({Comment comment, List<Annotation> metadata, Token staticKeyword, VariableDeclarationList fieldList, Token semicolon}) : this.full(comment, metadata, staticKeyword, fieldList, semicolon);
+
   accept(ASTVisitor visitor) => visitor.visitFieldDeclaration(this);
+
   Element get element => null;
+
   Token get endToken => semicolon;
 
   /**
    * Return the fields being declared.
    *
    * @return the fields being declared
    */
   VariableDeclarationList get fields => _fieldList;
 
   /**
    * Return `true` if the fields are static.
    *
    * @return `true` if the fields are declared to be static
    */
   bool get isStatic => staticKeyword != null;
 
   /**
    * Set the fields being declared to the given list of variables.
    *
    * @param fieldList the fields being declared
    */
   void set fields(VariableDeclarationList fieldList) {
     fieldList = becomeParentOf(fieldList);
   }
+
   void visitChildren(ASTVisitor visitor) {
     super.visitChildren(visitor);
     safelyVisitChild(_fieldList, visitor);
   }
+
   Token get firstTokenAfterCommentAndMetadata {
     if (staticKeyword != null) {
       return staticKeyword;
     }
     return _fieldList.beginToken;
   }
 }
+
 /**
  * Instances of the class `FieldFormalParameter` represent a field formal parameter.
  *
  * <pre>
  * fieldFormalParameter ::=
  *     ('final' [TypeName] | 'const' [TypeName] | 'var' | [TypeName])? 'this' '.' [SimpleIdentifier] [FormalParameterList]?
  * </pre>
  *
  * @coverage dart.engine.ast
  */
 class FieldFormalParameter extends NormalFormalParameter {
-
   /**
    * The token representing either the 'final', 'const' or 'var' keyword, or `null` if no
    * keyword was used.
    */
   Token keyword;
 
   /**
    * The name of the declared type of the parameter, or `null` if the parameter does not have
    * a declared type.
    */
@@ skipping 43 matching lines @@
    * @param metadata the annotations associated with this parameter
    * @param keyword the token representing either the 'final', 'const' or 'var' keyword
    * @param type the name of the declared type of the parameter
    * @param thisToken the token representing the 'this' keyword
    * @param period the token representing the period
    * @param identifier the name of the parameter being declared
    * @param parameters the parameters of the function-typed parameter, or `null` if this is
    *          not a function-typed field formal parameter
    */
   FieldFormalParameter({Comment comment, List<Annotation> metadata, Token keyword, TypeName type, Token thisToken, Token period, SimpleIdentifier identifier, FormalParameterList parameters}) : this.full(comment, metadata, keyword, type, thisToken, period, identifier, parameters);
+
   accept(ASTVisitor visitor) => visitor.visitFieldFormalParameter(this);
+
   Token get beginToken {
     if (keyword != null) {
       return keyword;
     } else if (_type != null) {
       return _type.beginToken;
     }
     return thisToken;
   }
+
   Token get endToken => identifier.endToken;
 
   /**
    * Return the parameters of the function-typed parameter, or `null` if this is not a
    * function-typed field formal parameter.
    *
    * @return the parameters of the function-typed parameter
    */
   FormalParameterList get parameters => _parameters;
 
   /**
    * Return the name of the declared type of the parameter, or `null` if the parameter does
    * not have a declared type. Note that if this is a function-typed field formal parameter this is
    * the return type of the function.
    *
    * @return the name of the declared type of the parameter
    */
   TypeName get type => _type;
-  bool get isConst => (keyword is KeywordToken) && identical(((keyword as KeywordToken)).keyword, Keyword.CONST);
-  bool get isFinal => (keyword is KeywordToken) && identical(((keyword as KeywordToken)).keyword, Keyword.FINAL);
+
+  bool get isConst => (keyword is KeywordToken) && identical((keyword as KeywordToken).keyword, Keyword.CONST);
+
+  bool get isFinal => (keyword is KeywordToken) && identical((keyword as KeywordToken).keyword, Keyword.FINAL);
 
   /**
    * Set the parameters of the function-typed parameter to the given parameters.
    *
    * @param parameters the parameters of the function-typed parameter
    */
   void set parameters(FormalParameterList parameters) {
     this._parameters = becomeParentOf(parameters);
   }
 
   /**
    * Set the name of the declared type of the parameter to the given type name.
    *
    * @param typeName the name of the declared type of the parameter
    */
   void set type(TypeName typeName) {
     _type = becomeParentOf(typeName);
   }
+
   void visitChildren(ASTVisitor visitor) {
     super.visitChildren(visitor);
     safelyVisitChild(_type, visitor);
     safelyVisitChild(identifier, visitor);
     safelyVisitChild(_parameters, visitor);
   }
 }
+
 /**
  * Instances of the class `ForEachStatement` represent a for-each statement.
  *
  * <pre>
  * forEachStatement ::=
  *     'for' '(' [DeclaredIdentifier] 'in' [Expression] ')' [Block]
  *   | 'for' '(' [SimpleIdentifier] 'in' [Expression] ')' [Block]
  * </pre>
  *
  * @coverage dart.engine.ast
  */
 class ForEachStatement extends Statement {
-
   /**
    * The token representing the 'for' keyword.
    */
   Token forKeyword;
 
   /**
    * The left parenthesis.
    */
   Token leftParenthesis;
 
@@ skipping 84 matching lines @@
    * Initialize a newly created for-each statement.
    *
    * @param forKeyword the token representing the 'for' keyword
    * @param leftParenthesis the left parenthesis
    * @param identifier the loop variable
    * @param iterator the expression evaluated to produce the iterator
    * @param rightParenthesis the right parenthesis
    * @param body the body of the loop
    */
   ForEachStatement.con2({Token forKeyword, Token leftParenthesis, SimpleIdentifier identifier, Token inKeyword, Expression iterator, Token rightParenthesis, Statement body}) : this.con2_full(forKeyword, leftParenthesis, identifier, inKeyword, iterator, rightParenthesis, body);
+
   accept(ASTVisitor visitor) => visitor.visitForEachStatement(this);
+
   Token get beginToken => forKeyword;
 
   /**
    * Return the body of the loop.
    *
    * @return the body of the loop
    */
   Statement get body => _body;
+
   Token get endToken => _body.endToken;
 
   /**
    * Return the loop variable, or `null` if the loop variable is declared in the 'for'.
    *
    * @return the loop variable
    */
   SimpleIdentifier get identifier => _identifier;
 
   /**
@@ skipping 39 matching lines @@
   }
 
   /**
    * Set the declaration of the loop variable to the given variable.
    *
    * @param variable the declaration of the loop variable
    */
   void set loopVariable(DeclaredIdentifier variable) {
     _loopVariable = becomeParentOf(variable);
   }
+
   void visitChildren(ASTVisitor visitor) {
     safelyVisitChild(_loopVariable, visitor);
     safelyVisitChild(_identifier, visitor);
     safelyVisitChild(_iterator, visitor);
     safelyVisitChild(_body, visitor);
   }
 }
+
 /**
  * Instances of the class `ForStatement` represent a for statement.
  *
  * <pre>
  * forStatement ::=
  *     'for' '(' forLoopParts ')' [Statement]
  *
  * forLoopParts ::=
  *     forInitializerStatement ';' [Expression]? ';' [Expression]?
  *
  * forInitializerStatement ::=
  *     [DefaultFormalParameter]
  *   | [Expression]?
  * </pre>
  *
  * @coverage dart.engine.ast
  */
 class ForStatement extends Statement {
-
   /**
    * The token representing the 'for' keyword.
    */
   Token forKeyword;
 
   /**
    * The left parenthesis.
    */
   Token leftParenthesis;
 
@@ skipping 78 matching lines @@
    * @param variableList the declaration of the loop variables
    * @param initialization the initialization expression
    * @param leftSeparator the semicolon separating the initializer and the condition
    * @param condition the condition used to determine when to terminate the loop
    * @param rightSeparator the semicolon separating the condition and the updater
    * @param updaters the list of expressions run after each execution of the loop body
    * @param rightParenthesis the right parenthesis
    * @param body the body of the loop
    */
   ForStatement({Token forKeyword, Token leftParenthesis, VariableDeclarationList variableList, Expression initialization, Token leftSeparator, Expression condition, Token rightSeparator, List<Expression> updaters, Token rightParenthesis, Statement body}) : this.full(forKeyword, leftParenthesis, variableList, initialization, leftSeparator, condition, rightSeparator, updaters, rightParenthesis, body);
+
   accept(ASTVisitor visitor) => visitor.visitForStatement(this);
+
   Token get beginToken => forKeyword;
 
   /**
    * Return the body of the loop.
    *
    * @return the body of the loop
    */
   Statement get body => _body;
 
   /**
    * Return the condition used to determine when to terminate the loop, or `null` if there is
    * no condition.
    *
    * @return the condition used to determine when to terminate the loop
    */
   Expression get condition => _condition;
+
   Token get endToken => _body.endToken;
 
   /**
    * Return the initialization expression, or `null` if there is no initialization expression.
    *
    * @return the initialization expression
    */
   Expression get initialization => _initialization;
 
   /**
@@ skipping 31 matching lines @@
   }
 
   /**
    * Set the declaration of the loop variables to the given parameter.
    *
    * @param variableList the declaration of the loop variables
    */
   void set variables(VariableDeclarationList variableList) {
     variableList = becomeParentOf(variableList);
   }
+
   void visitChildren(ASTVisitor visitor) {
     safelyVisitChild(_variableList, visitor);
     safelyVisitChild(_initialization, visitor);
     safelyVisitChild(_condition, visitor);
     updaters.accept(visitor);
     safelyVisitChild(_body, visitor);
   }
 }
+
 /**
  * The abstract class `FormalParameter` defines the behavior of objects representing a
  * parameter to a function.
  *
  * <pre>
  * formalParameter ::=
  *     [NormalFormalParameter]
  *   | [DefaultFormalParameter]
  *   | [DefaultFormalParameter]
  * </pre>
  *
  * @coverage dart.engine.ast
  */
 abstract class FormalParameter extends ASTNode {
-
   /**
    * Return the element representing this parameter, or `null` if this parameter has not been
    * resolved.
    *
    * @return the element representing this parameter
    */
   ParameterElement get element {
     SimpleIdentifier identifier = this.identifier;
     if (identifier == null) {
       return null;
@@ skipping 24 matching lines @@
 
   /**
    * Return `true` if this parameter was declared with the 'final' modifier. Parameters that
    * are declared with the 'const' modifier will return `false` even though they are
    * implicitly final.
    *
    * @return `true` if this parameter was declared with the 'final' modifier
    */
   bool get isFinal;
 }
+
 /**
  * Instances of the class `FormalParameterList` represent the formal parameter list of a
  * method declaration, function declaration, or function type alias.
  *
  * While the grammar requires all optional formal parameters to follow all of the normal formal
  * parameters and at most one grouping of optional formal parameters, this class does not enforce
  * those constraints. All parameters are flattened into a single list, which can have any or all
  * kinds of parameters (normal, named, and positional) in any order.
  *
  * <pre>
@@ skipping 12 matching lines @@
  * optionalPositionalFormalParameters ::=
  *     '[' [DefaultFormalParameter] (',' [DefaultFormalParameter])* ']'
  *
  * namedFormalParameters ::=
  *     '{' [DefaultFormalParameter] (',' [DefaultFormalParameter])* '}'
  * </pre>
  *
  * @coverage dart.engine.ast
  */
 class FormalParameterList extends ASTNode {
-
   /**
    * The left parenthesis.
    */
   Token _leftParenthesis;
 
   /**
    * The parameters associated with the method.
    */
   NodeList<FormalParameter> parameters;
 
@@ skipping 35 matching lines @@
   /**
    * Initialize a newly created parameter list.
    *
    * @param leftParenthesis the left parenthesis
    * @param parameters the parameters associated with the method
    * @param leftDelimiter the left delimiter introducing the optional parameters
    * @param rightDelimiter the right delimiter introducing the optional parameters
    * @param rightParenthesis the right parenthesis
    */
   FormalParameterList({Token leftParenthesis, List<FormalParameter> parameters, Token leftDelimiter, Token rightDelimiter, Token rightParenthesis}) : this.full(leftParenthesis, parameters, leftDelimiter, rightDelimiter, rightParenthesis);
+
   accept(ASTVisitor visitor) => visitor.visitFormalParameterList(this);
+
   Token get beginToken => _leftParenthesis;
+
   Token get endToken => _rightParenthesis;
 
   /**
    * Return the left square bracket ('[') or left curly brace ('{') introducing the optional
    * parameters, or `null` if there are no optional parameters.
    *
    * @return the left square bracket ('[') or left curly brace ('{') introducing the optional
    *         parameters
    */
   Token get leftDelimiter => _leftDelimiter;
@@ skipping 66 matching lines @@
   }
 
   /**
    * Set the right parenthesis to the given token.
    *
    * @param parenthesis the right parenthesis
    */
   void set rightParenthesis(Token parenthesis) {
     _rightParenthesis = parenthesis;
   }
+
   void visitChildren(ASTVisitor visitor) {
     parameters.accept(visitor);
   }
 }
+
 /**
  * The abstract class `FunctionBody` defines the behavior common to objects representing the
  * body of a function or method.
  *
  * <pre>
  * functionBody ::=
  *     [BlockFunctionBody]
  *   | [EmptyFunctionBody]
  *   | [ExpressionFunctionBody]
  * </pre>
  *
  * @coverage dart.engine.ast
  */
 abstract class FunctionBody extends ASTNode {
 }
+
 /**
  * Instances of the class `FunctionDeclaration` wrap a [FunctionExpression] as a top-level declaration.
  *
  * <pre>
  * functionDeclaration ::=
  *     'external' functionSignature
  *   | functionSignature [FunctionBody]
  *
  * functionSignature ::=
  *     [Type]? ('get' | 'set')? [SimpleIdentifier] [FormalParameterList]
  * </pre>
  *
  * @coverage dart.engine.ast
  */
 class FunctionDeclaration extends CompilationUnitMember {
-
   /**
    * The token representing the 'external' keyword, or `null` if this is not an external
    * function.
    */
   Token externalKeyword;
 
   /**
    * The return type of the function, or `null` if no return type was declared.
    */
   TypeName _returnType;
@@ skipping 38 matching lines @@
    *
    * @param comment the documentation comment associated with this function
    * @param metadata the annotations associated with this function
    * @param externalKeyword the token representing the 'external' keyword
    * @param returnType the return type of the function
    * @param propertyKeyword the token representing the 'get' or 'set' keyword
    * @param name the name of the function
    * @param functionExpression the function expression being wrapped
    */
   FunctionDeclaration({Comment comment, List<Annotation> metadata, Token externalKeyword, TypeName returnType, Token propertyKeyword, SimpleIdentifier name, FunctionExpression functionExpression}) : this.full(comment, metadata, externalKeyword, returnType, propertyKeyword, name, functionExpression);
+
   accept(ASTVisitor visitor) => visitor.visitFunctionDeclaration(this);
+
   ExecutableElement get element => _name != null ? (_name.staticElement as ExecutableElement) : null;
+
   Token get endToken => _functionExpression.endToken;
 
   /**
    * Return the function expression being wrapped.
    *
    * @return the function expression being wrapped
    */
   FunctionExpression get functionExpression => _functionExpression;
 
   /**
    * Return the name of the function, or `null` if the function is not named.
    *
    * @return the name of the function
    */
   SimpleIdentifier get name => _name;
 
   /**
    * Return the return type of the function, or `null` if no return type was declared.
    *
    * @return the return type of the function
    */
   TypeName get returnType => _returnType;
 
   /**
    * Return `true` if this function declares a getter.
    *
    * @return `true` if this function declares a getter
    */
-  bool get isGetter => propertyKeyword != null && identical(((propertyKeyword as KeywordToken)).keyword, Keyword.GET);
+  bool get isGetter => propertyKeyword != null && identical((propertyKeyword as KeywordToken).keyword, Keyword.GET);
 
   /**
    * Return `true` if this function declares a setter.
    *
    * @return `true` if this function declares a setter
    */
-  bool get isSetter => propertyKeyword != null && identical(((propertyKeyword as KeywordToken)).keyword, Keyword.SET);
+  bool get isSetter => propertyKeyword != null && identical((propertyKeyword as KeywordToken).keyword, Keyword.SET);
 
   /**
    * Set the function expression being wrapped to the given function expression.
    *
    * @param functionExpression the function expression being wrapped
    */
   void set functionExpression(FunctionExpression functionExpression) {
     functionExpression = becomeParentOf(functionExpression);
   }
 
   /**
    * Set the name of the function to the given identifier.
    *
    * @param identifier the name of the function
    */
   void set name(SimpleIdentifier identifier) {
     _name = becomeParentOf(identifier);
   }
 
   /**
    * Set the return type of the function to the given name.
    *
    * @param name the return type of the function
    */
   void set returnType(TypeName name) {
     _returnType = becomeParentOf(name);
   }
+
   void visitChildren(ASTVisitor visitor) {
     super.visitChildren(visitor);
     safelyVisitChild(_returnType, visitor);
     safelyVisitChild(_name, visitor);
     safelyVisitChild(_functionExpression, visitor);
   }
+
   Token get firstTokenAfterCommentAndMetadata {
     if (externalKeyword != null) {
       return externalKeyword;
     }
     if (_returnType != null) {
       return _returnType.beginToken;
     } else if (propertyKeyword != null) {
       return propertyKeyword;
     } else if (_name != null) {
       return _name.beginToken;
     }
     return _functionExpression.beginToken;
   }
 }
+
 /**
  * Instances of the class `FunctionDeclarationStatement` wrap a [FunctionDeclaration
  ] as a statement.
  *
  * @coverage dart.engine.ast
  */
 class FunctionDeclarationStatement extends Statement {
-
   /**
    * The function declaration being wrapped.
    */
   FunctionDeclaration functionDeclaration;
 
   /**
    * Initialize a newly created function declaration statement.
    *
    * @param functionDeclaration the the function declaration being wrapped
    */
   FunctionDeclarationStatement.full(FunctionDeclaration functionDeclaration) {
     this.functionDeclaration = becomeParentOf(functionDeclaration);
   }
 
   /**
    * Initialize a newly created function declaration statement.
    *
    * @param functionDeclaration the the function declaration being wrapped
    */
   FunctionDeclarationStatement({FunctionDeclaration functionDeclaration}) : this.full(functionDeclaration);
+
   accept(ASTVisitor visitor) => visitor.visitFunctionDeclarationStatement(this);
+
   Token get beginToken => functionDeclaration.beginToken;
+
   Token get endToken => functionDeclaration.endToken;
 
   /**
    * Set the function declaration being wrapped to the given function declaration.
    *
    * @param functionDeclaration the function declaration being wrapped
    */
   void set functionExpression(FunctionDeclaration functionDeclaration) {
     this.functionDeclaration = becomeParentOf(functionDeclaration);
   }
+
   void visitChildren(ASTVisitor visitor) {
     safelyVisitChild(functionDeclaration, visitor);
   }
 }
+
 /**
  * Instances of the class `FunctionExpression` represent a function expression.
  *
  * <pre>
  * functionExpression ::=
  *     [FormalParameterList] [FunctionBody]
  * </pre>
  *
  * @coverage dart.engine.ast
  */
 class FunctionExpression extends Expression {
-
   /**
    * The parameters associated with the function.
    */
   FormalParameterList _parameters;
 
   /**
    * The body of the function, or `null` if this is an external function.
    */
   FunctionBody _body;
 
@@ skipping 14 matching lines @@
     this._body = becomeParentOf(body);
   }
 
   /**
    * Initialize a newly created function declaration.
    *
    * @param parameters the parameters associated with the function
    * @param body the body of the function
    */
   FunctionExpression({FormalParameterList parameters, FunctionBody body}) : this.full(parameters, body);
+
   accept(ASTVisitor visitor) => visitor.visitFunctionExpression(this);
+
   Token get beginToken {
     if (_parameters != null) {
       return _parameters.beginToken;
     } else if (_body != null) {
       return _body.beginToken;
     }
     throw new IllegalStateException("Non-external functions must have a body");
   }
 
   /**
    * Return the body of the function, or `null` if this is an external function.
    *
    * @return the body of the function
    */
   FunctionBody get body => _body;
+
   Token get endToken {
     if (_body != null) {
       return _body.endToken;
     } else if (_parameters != null) {
       return _parameters.endToken;
     }
     throw new IllegalStateException("Non-external functions must have a body");
   }
 
   /**
@@ skipping 13 matching lines @@
   }
 
   /**
    * Set the parameters associated with the function to the given list of parameters.
    *
    * @param parameters the parameters associated with the function
    */
   void set parameters(FormalParameterList parameters) {
     this._parameters = becomeParentOf(parameters);
   }
+
   void visitChildren(ASTVisitor visitor) {
     safelyVisitChild(_parameters, visitor);
     safelyVisitChild(_body, visitor);
   }
 }
+
 /**
  * Instances of the class `FunctionExpressionInvocation` represent the invocation of a
  * function resulting from evaluating an expression. Invocations of methods and other forms of
  * functions are represented by [MethodInvocation] nodes. Invocations of
  * getters and setters are represented by either [PrefixedIdentifier] or
  * [PropertyAccess] nodes.
  *
  * <pre>
  * functionExpressionInvoction ::=
  *     [Expression] [ArgumentList]
  * </pre>
  *
  * @coverage dart.engine.ast
  */
 class FunctionExpressionInvocation extends Expression {
-
   /**
    * The expression producing the function being invoked.
    */
   Expression _function;
 
   /**
    * The list of arguments to the function.
    */
   ArgumentList _argumentList;
 
@@ skipping 20 matching lines @@
     this._argumentList = becomeParentOf(argumentList);
   }
 
   /**
    * Initialize a newly created function expression invocation.
    *
    * @param function the expression producing the function being invoked
    * @param argumentList the list of arguments to the method
    */
   FunctionExpressionInvocation({Expression function, ArgumentList argumentList}) : this.full(function, argumentList);
+
   accept(ASTVisitor visitor) => visitor.visitFunctionExpressionInvocation(this);
 
   /**
    * Return the list of arguments to the method.
    *
    * @return the list of arguments to the method
    */
   ArgumentList get argumentList => _argumentList;
+
   Token get beginToken => _function.beginToken;
 
   /**
    * Return the best element available for the function being invoked. If resolution was able to
    * find a better element based on type propagation, that element will be returned. Otherwise, the
    * element found using the result of static analysis will be returned. If resolution has not been
    * performed, then `null` will be returned.
    *
    * @return the best element available for this function
    */
   ExecutableElement get bestElement {
     ExecutableElement element = propagatedElement;
     if (element == null) {
       element = staticElement;
     }
     return element;
   }
+
   Token get endToken => _argumentList.endToken;
 
   /**
    * Return the expression producing the function being invoked.
    *
    * @return the expression producing the function being invoked
    */
   Expression get function => _function;
 
   /**
@@ skipping 26 matching lines @@
 
   /**
    * Set the element associated with the function being invoked based on propagated type information
    * to the given element.
    *
    * @param element the element to be associated with the function being invoked
    */
   void set propagatedElement(ExecutableElement element) {
     _propagatedElement = element;
   }
+
   void visitChildren(ASTVisitor visitor) {
     safelyVisitChild(_function, visitor);
     safelyVisitChild(_argumentList, visitor);
   }
 }
+
 /**
  * Instances of the class `FunctionTypeAlias` represent a function type alias.
  *
  * <pre>
  * functionTypeAlias ::=
  *      functionPrefix [TypeParameterList]? [FormalParameterList] ';'
  *
  * functionPrefix ::=
  *     [TypeName]? [SimpleIdentifier]
  * </pre>
  *
  * @coverage dart.engine.ast
  */
 class FunctionTypeAlias extends TypeAlias {
-
   /**
    * The name of the return type of the function type being defined, or `null` if no return
    * type was given.
    */
   TypeName _returnType;
 
   /**
    * The name of the function type being declared.
    */
   SimpleIdentifier _name;
@@ skipping 34 matching lines @@
    * @param comment the documentation comment associated with this type alias
    * @param metadata the annotations associated with this type alias
    * @param keyword the token representing the 'typedef' keyword
    * @param returnType the name of the return type of the function type being defined
    * @param name the name of the type being declared
    * @param typeParameters the type parameters for the type
    * @param parameters the parameters associated with the function
    * @param semicolon the semicolon terminating the declaration
    */
   FunctionTypeAlias({Comment comment, List<Annotation> metadata, Token keyword, TypeName returnType, SimpleIdentifier name, TypeParameterList typeParameters, FormalParameterList parameters, Token semicolon}) : this.full(comment, metadata, keyword, returnType, name, typeParameters, parameters, semicolon);
+
   accept(ASTVisitor visitor) => visitor.visitFunctionTypeAlias(this);
+
   FunctionTypeAliasElement get element => _name != null ? (_name.staticElement as FunctionTypeAliasElement) : null;
 
   /**
    * Return the name of the function type being declared.
    *
    * @return the name of the function type being declared
    */
   SimpleIdentifier get name => _name;
 
   /**
@@ skipping 47 matching lines @@
   }
 
   /**
    * Set the type parameters for the function type to the given list of parameters.
    *
    * @param typeParameters the type parameters for the function type
    */
   void set typeParameters(TypeParameterList typeParameters) {
     this._typeParameters = becomeParentOf(typeParameters);
   }
+
   void visitChildren(ASTVisitor visitor) {
     super.visitChildren(visitor);
     safelyVisitChild(_returnType, visitor);
     safelyVisitChild(_name, visitor);
     safelyVisitChild(_typeParameters, visitor);
     safelyVisitChild(_parameters, visitor);
   }
 }
+
 /**
  * Instances of the class `FunctionTypedFormalParameter` represent a function-typed formal
  * parameter.
  *
  * <pre>
  * functionSignature ::=
  *     [TypeName]? [SimpleIdentifier] [FormalParameterList]
  * </pre>
  *
  * @coverage dart.engine.ast
  */
 class FunctionTypedFormalParameter extends NormalFormalParameter {
-
   /**
    * The return type of the function, or `null` if the function does not have a return type.
    */
   TypeName _returnType;
 
   /**
    * The parameters of the function-typed parameter.
    */
   FormalParameterList _parameters;
 
@@ skipping 16 matching lines @@
    * Initialize a newly created formal parameter.
    *
    * @param comment the documentation comment associated with this parameter
    * @param metadata the annotations associated with this parameter
    * @param returnType the return type of the function, or `null` if the function does not
    *          have a return type
    * @param identifier the name of the function-typed parameter
    * @param parameters the parameters of the function-typed parameter
    */
   FunctionTypedFormalParameter({Comment comment, List<Annotation> metadata, TypeName returnType, SimpleIdentifier identifier, FormalParameterList parameters}) : this.full(comment, metadata, returnType, identifier, parameters);
+
   accept(ASTVisitor visitor) => visitor.visitFunctionTypedFormalParameter(this);
+
   Token get beginToken {
     if (_returnType != null) {
       return _returnType.beginToken;
     }
     return identifier.beginToken;
   }
+
   Token get endToken => _parameters.endToken;
 
   /**
    * Return the parameters of the function-typed parameter.
    *
    * @return the parameters of the function-typed parameter
    */
   FormalParameterList get parameters => _parameters;
 
   /**
    * Return the return type of the function, or `null` if the function does not have a return
    * type.
    *
    * @return the return type of the function
    */
   TypeName get returnType => _returnType;
+
   bool get isConst => false;
+
   bool get isFinal => false;
 
   /**
    * Set the parameters of the function-typed parameter to the given parameters.
    *
    * @param parameters the parameters of the function-typed parameter
    */
   void set parameters(FormalParameterList parameters) {
     this._parameters = becomeParentOf(parameters);
   }
 
   /**
    * Set the return type of the function to the given type.
    *
    * @param returnType the return type of the function
    */
   void set returnType(TypeName returnType) {
     this._returnType = becomeParentOf(returnType);
   }
+
   void visitChildren(ASTVisitor visitor) {
     super.visitChildren(visitor);
     safelyVisitChild(_returnType, visitor);
     safelyVisitChild(identifier, visitor);
     safelyVisitChild(_parameters, visitor);
   }
 }
+
 /**
  * Instances of the class `HideCombinator` represent a combinator that restricts the names
  * being imported to those that are not in a given list.
  *
  * <pre>
  * hideCombinator ::=
  *     'hide' [SimpleIdentifier] (',' [SimpleIdentifier])*
  * </pre>
  *
  * @coverage dart.engine.ast
  */
 class HideCombinator extends Combinator {
-
   /**
    * The list of names from the library that are hidden by this combinator.
    */
   NodeList<SimpleIdentifier> hiddenNames;
 
   /**
    * Initialize a newly created import show combinator.
    *
    * @param keyword the comma introducing the combinator
    * @param hiddenNames the list of names from the library that are hidden by this combinator
    */
   HideCombinator.full(Token keyword, List<SimpleIdentifier> hiddenNames) : super.full(keyword) {
     this.hiddenNames = new NodeList<SimpleIdentifier>(this);
     this.hiddenNames.addAll(hiddenNames);
   }
 
   /**
    * Initialize a newly created import show combinator.
    *
    * @param keyword the comma introducing the combinator
    * @param hiddenNames the list of names from the library that are hidden by this combinator
    */
   HideCombinator({Token keyword, List<SimpleIdentifier> hiddenNames}) : this.full(keyword, hiddenNames);
+
   accept(ASTVisitor visitor) => visitor.visitHideCombinator(this);
+
   Token get endToken => hiddenNames.endToken;
+
   void visitChildren(ASTVisitor visitor) {
     hiddenNames.accept(visitor);
   }
 }
+
 /**
  * The abstract class `Identifier` defines the behavior common to nodes that represent an
  * identifier.
  *
  * <pre>
  * identifier ::=
  *     [SimpleIdentifier]
  *   | [PrefixedIdentifier]
  * </pre>
  *
  * @coverage dart.engine.ast
  */
 abstract class Identifier extends Expression {
-
   /**
    * Return `true` if the given name is visible only within the library in which it is
    * declared.
    *
    * @param name the name being tested
    * @return `true` if the given name is private
    */
   static bool isPrivateName(String name) => name.startsWith("_");
 
   /**
@@ skipping 25 matching lines @@
 
   /**
    * Return the element associated with this identifier based on static type information, or
    * `null` if the AST structure has not been resolved or if this identifier could not be
    * resolved. One example of the latter case is an identifier that is not defined within the scope
    * in which it appears
    *
    * @return the element associated with the operator
    */
   Element get staticElement;
+
   bool get isAssignable => true;
 }
+
 /**
  * Instances of the class `IfStatement` represent an if statement.
  *
  * <pre>
  * ifStatement ::=
  *     'if' '(' [Expression] ')' [Statement] ('else' [Statement])?
  * </pre>
  *
  * @coverage dart.engine.ast
  */
 class IfStatement extends Statement {
-
   /**
    * The token representing the 'if' keyword.
    */
   Token ifKeyword;
 
   /**
    * The left parenthesis.
    */
   Token leftParenthesis;
 
@@ skipping 49 matching lines @@
    *
    * @param ifKeyword the token representing the 'if' keyword
    * @param leftParenthesis the left parenthesis
    * @param condition the condition used to determine which of the statements is executed next
    * @param rightParenthesis the right parenthesis
    * @param thenStatement the statement that is executed if the condition evaluates to `true`
    * @param elseKeyword the token representing the 'else' keyword
    * @param elseStatement the statement that is executed if the condition evaluates to `false`
    */
   IfStatement({Token ifKeyword, Token leftParenthesis, Expression condition, Token rightParenthesis, Statement thenStatement, Token elseKeyword, Statement elseStatement}) : this.full(ifKeyword, leftParenthesis, condition, rightParenthesis, thenStatement, elseKeyword, elseStatement);
+
   accept(ASTVisitor visitor) => visitor.visitIfStatement(this);
+
   Token get beginToken => ifKeyword;
 
   /**
    * Return the condition used to determine which of the statements is executed next.
    *
    * @return the condition used to determine which statement is executed next
    */
   Expression get condition => _condition;
 
   /**
    * Return the statement that is executed if the condition evaluates to `false`, or
    * `null` if there is no else statement.
    *
    * @return the statement that is executed if the condition evaluates to `false`
    */
   Statement get elseStatement => _elseStatement;
+
   Token get endToken {
     if (_elseStatement != null) {
       return _elseStatement.endToken;
     }
     return _thenStatement.endToken;
   }
 
   /**
    * Return the statement that is executed if the condition evaluates to `true`.
    *
@@ skipping 23 matching lines @@
 
   /**
    * Set the statement that is executed if the condition evaluates to `true` to the given
    * statement.
    *
    * @param statement the statement that is executed if the condition evaluates to `true`
    */
   void set thenStatement(Statement statement) {
     _thenStatement = becomeParentOf(statement);
   }
+
   void visitChildren(ASTVisitor visitor) {
     safelyVisitChild(_condition, visitor);
     safelyVisitChild(_thenStatement, visitor);
     safelyVisitChild(_elseStatement, visitor);
   }
 }
+
 /**
  * Instances of the class `ImplementsClause` represent the "implements" clause in an class
  * declaration.
  *
  * <pre>
  * implementsClause ::=
  *     'implements' [TypeName] (',' [TypeName])*
  * </pre>
  *
  * @coverage dart.engine.ast
  */
 class ImplementsClause extends ASTNode {
-
   /**
    * The token representing the 'implements' keyword.
    */
   Token keyword;
 
   /**
    * The interfaces that are being implemented.
    */
   NodeList<TypeName> interfaces;
 
   /**
    * Initialize a newly created implements clause.
    *
    * @param keyword the token representing the 'implements' keyword
    * @param interfaces the interfaces that are being implemented
    */
   ImplementsClause.full(Token keyword, List<TypeName> interfaces) {
     this.interfaces = new NodeList<TypeName>(this);
     this.keyword = keyword;
     this.interfaces.addAll(interfaces);
   }
 
   /**
    * Initialize a newly created implements clause.
    *
    * @param keyword the token representing the 'implements' keyword
    * @param interfaces the interfaces that are being implemented
    */
   ImplementsClause({Token keyword, List<TypeName> interfaces}) : this.full(keyword, interfaces);
+
   accept(ASTVisitor visitor) => visitor.visitImplementsClause(this);
+
   Token get beginToken => keyword;
+
   Token get endToken => interfaces.endToken;
+
   void visitChildren(ASTVisitor visitor) {
     interfaces.accept(visitor);
   }
 }
+
 /**
  * Instances of the class `ImportDirective` represent an import directive.
  *
  * <pre>
  * importDirective ::=
  *     [Annotation] 'import' [StringLiteral] ('as' identifier)? [Combinator]* ';'
  * </pre>
  *
  * @coverage dart.engine.ast
  */
@@ skipping 29 matching lines @@
         if (compare != 0) {
           return compare;
         }
       }
     }
     NodeList<Combinator> combinators1 = import1.combinators;
     List<String> allHides1 = new List<String>();
     List<String> allShows1 = new List<String>();
     for (Combinator combinator in combinators1) {
       if (combinator is HideCombinator) {
-        NodeList<SimpleIdentifier> hides = ((combinator as HideCombinator)).hiddenNames;
+        NodeList<SimpleIdentifier> hides = (combinator as HideCombinator).hiddenNames;
         for (SimpleIdentifier simpleIdentifier in hides) {
           allHides1.add(simpleIdentifier.name);
         }
       } else {
-        NodeList<SimpleIdentifier> shows = ((combinator as ShowCombinator)).shownNames;
+        NodeList<SimpleIdentifier> shows = (combinator as ShowCombinator).shownNames;
         for (SimpleIdentifier simpleIdentifier in shows) {
           allShows1.add(simpleIdentifier.name);
         }
       }
     }
     NodeList<Combinator> combinators2 = import2.combinators;
     List<String> allHides2 = new List<String>();
     List<String> allShows2 = new List<String>();
     for (Combinator combinator in combinators2) {
       if (combinator is HideCombinator) {
-        NodeList<SimpleIdentifier> hides = ((combinator as HideCombinator)).hiddenNames;
+        NodeList<SimpleIdentifier> hides = (combinator as HideCombinator).hiddenNames;
         for (SimpleIdentifier simpleIdentifier in hides) {
           allHides2.add(simpleIdentifier.name);
         }
       } else {
-        NodeList<SimpleIdentifier> shows = ((combinator as ShowCombinator)).shownNames;
+        NodeList<SimpleIdentifier> shows = (combinator as ShowCombinator).shownNames;
         for (SimpleIdentifier simpleIdentifier in shows) {
           allShows2.add(simpleIdentifier.name);
         }
       }
     }
     if (allHides1.length != allHides2.length) {
       return allHides1.length - allHides2.length;
     }
     if (allShows1.length != allShows2.length) {
       return allShows1.length - allShows2.length;
@@ skipping 41 matching lines @@
    * @param comment the documentation comment associated with this directive
    * @param metadata the annotations associated with the directive
    * @param keyword the token representing the 'import' keyword
    * @param libraryUri the URI of the library being imported
    * @param asToken the token representing the 'as' token
    * @param prefix the prefix to be used with the imported names
    * @param combinators the combinators used to control how names are imported
    * @param semicolon the semicolon terminating the directive
    */
   ImportDirective({Comment comment, List<Annotation> metadata, Token keyword, StringLiteral libraryUri, Token asToken, SimpleIdentifier prefix, List<Combinator> combinators, Token semicolon}) : this.full(comment, metadata, keyword, libraryUri, asToken, prefix, combinators, semicolon);
+
   accept(ASTVisitor visitor) => visitor.visitImportDirective(this);
+
   ImportElement get element => super.element as ImportElement;
 
   /**
    * Return the prefix to be used with the imported names, or `null` if the imported names are
    * not prefixed.
    *
    * @return the prefix to be used with the imported names
    */
   SimpleIdentifier get prefix => _prefix;
+
   LibraryElement get uriElement {
     ImportElement element = this.element;
     if (element == null) {
       return null;
     }
     return element.importedLibrary;
   }
 
   /**
    * Set the prefix to be used with the imported names to the given identifier.
    *
    * @param prefix the prefix to be used with the imported names
    */
   void set prefix(SimpleIdentifier prefix) {
     this._prefix = becomeParentOf(prefix);
   }
+
   void visitChildren(ASTVisitor visitor) {
     super.visitChildren(visitor);
     safelyVisitChild(_prefix, visitor);
     combinators.accept(visitor);
   }
 }
+
 /**
  * Instances of the class `IndexExpression` represent an index expression.
  *
  * <pre>
  * indexExpression ::=
  *     [Expression] '[' [Expression] ']'
  * </pre>
  *
  * @coverage dart.engine.ast
  */
 class IndexExpression extends Expression {
-
   /**
    * The expression used to compute the object being indexed, or `null` if this index
    * expression is part of a cascade expression.
    */
   Expression _target;
 
   /**
    * The period ("..") before a cascaded index expression, or `null` if this index expression
    * is not part of a cascade expression.
    */
@@ skipping 77 matching lines @@
 
   /**
    * Initialize a newly created index expression.
    *
    * @param period the period ("..") before a cascaded index expression
    * @param leftBracket the left square bracket
    * @param index the expression used to compute the index
    * @param rightBracket the right square bracket
    */
   IndexExpression.forCascade({Token period, Token leftBracket, Expression index, Token rightBracket}) : this.forCascade_full(period, leftBracket, index, rightBracket);
+
   accept(ASTVisitor visitor) => visitor.visitIndexExpression(this);
+
   Token get beginToken {
     if (_target != null) {
       return _target.beginToken;
     }
     return period;
   }
 
   /**
    * Return the best element available for this operator. If resolution was able to find a better
    * element based on type propagation, that element will be returned. Otherwise, the element found
    * using the result of static analysis will be returned. If resolution has not been performed,
    * then `null` will be returned.
    *
    * @return the best element available for this operator
    */
   MethodElement get bestElement {
     MethodElement element = propagatedElement;
     if (element == null) {
       element = staticElement;
     }
     return element;
   }
+
   Token get endToken => _rightBracket;
 
   /**
    * Return the expression used to compute the index.
    *
    * @return the expression used to compute the index
    */
   Expression get index => _index;
 
   /**
@@ skipping 24 matching lines @@
    */
   Expression get realTarget {
     if (isCascaded) {
       ASTNode ancestor = parent;
       while (ancestor is! CascadeExpression) {
         if (ancestor == null) {
           return _target;
         }
         ancestor = ancestor.parent;
       }
-      return ((ancestor as CascadeExpression)).target;
+      return (ancestor as CascadeExpression).target;
     }
     return _target;
   }
 
   /**
    * Return the right square bracket.
    *
    * @return the right square bracket
    */
   Token get rightBracket => _rightBracket;
@@ skipping 43 matching lines @@
    * Note that [inGetterContext] and [inSetterContext] are not opposites, nor are
    * they mutually exclusive. In other words, it is possible for both methods to return `true`
    * when invoked on the same node.
    *
    * @return `true` if this expression is in a context where the operator '[]=' will be
    *         invoked
    */
   bool inSetterContext() {
     ASTNode parent = this.parent;
     if (parent is PrefixExpression) {
-      return ((parent as PrefixExpression)).operator.type.isIncrementOperator;
+      return (parent as PrefixExpression).operator.type.isIncrementOperator;
     } else if (parent is PostfixExpression) {
       return true;
     } else if (parent is AssignmentExpression) {
-      return identical(((parent as AssignmentExpression)).leftHandSide, this);
+      return identical((parent as AssignmentExpression).leftHandSide, this);
     }
     return false;
   }
+
   bool get isAssignable => true;
 
   /**
    * Return `true` if this expression is cascaded. If it is, then the target of this
    * expression is not stored locally but is stored in the nearest ancestor that is a
    * [CascadeExpression].
    *
    * @return `true` if this expression is cascaded
    */
   bool get isCascaded => period != null;
@@ skipping 46 matching lines @@
   }
 
   /**
    * Set the expression used to compute the object being indexed to the given expression.
    *
    * @param expression the expression used to compute the object being indexed
    */
   void set target(Expression expression) {
     _target = becomeParentOf(expression);
   }
+
   void visitChildren(ASTVisitor visitor) {
     safelyVisitChild(_target, visitor);
     safelyVisitChild(_index, visitor);
   }
 
   /**
    * If the AST structure has been resolved, and the function being invoked is known based on
    * propagated type information, then return the parameter element representing the parameter to
    * which the value of the index expression will be bound. Otherwise, return `null`.
    *
@@ skipping 27 matching lines @@
     if (_staticElement == null) {
       return null;
     }
     List<ParameterElement> parameters = _staticElement.parameters;
     if (parameters.length < 1) {
       return null;
     }
     return parameters[0];
   }
 }
+
 /**
  * Instances of the class `InstanceCreationExpression` represent an instance creation
  * expression.
  *
  * <pre>
  * newExpression ::=
  *     ('new' | 'const') [TypeName] ('.' [SimpleIdentifier])? [ArgumentList]
  * </pre>
  *
  * @coverage dart.engine.ast
  */
 class InstanceCreationExpression extends Expression {
-
   /**
    * The keyword used to indicate how an object should be created.
    */
   Token keyword;
 
   /**
    * The name of the constructor to be invoked.
    */
   ConstructorName constructorName;
 
@@ skipping 22 matching lines @@
   }
 
   /**
    * Initialize a newly created instance creation expression.
    *
    * @param keyword the keyword used to indicate how an object should be created
    * @param constructorName the name of the constructor to be invoked
    * @param argumentList the list of arguments to the constructor
    */
   InstanceCreationExpression({Token keyword, ConstructorName constructorName, ArgumentList argumentList}) : this.full(keyword, constructorName, argumentList);
+
   accept(ASTVisitor visitor) => visitor.visitInstanceCreationExpression(this);
 
   /**
    * Return the list of arguments to the constructor.
    *
    * @return the list of arguments to the constructor
    */
   ArgumentList get argumentList => _argumentList;
+
   Token get beginToken => keyword;
+
   Token get endToken => _argumentList.endToken;
 
   /**
    * Return `true` if this creation expression is used to invoke a constant constructor.
    *
    * @return `true` if this creation expression is used to invoke a constant constructor
    */
-  bool get isConst => keyword is KeywordToken && identical(((keyword as KeywordToken)).keyword, Keyword.CONST);
+  bool get isConst => keyword is KeywordToken && identical((keyword as KeywordToken).keyword, Keyword.CONST);
 
   /**
    * Set the list of arguments to the constructor to the given list.
    *
    * @param argumentList the list of arguments to the constructor
    */
   void set argumentList(ArgumentList argumentList) {
     this._argumentList = becomeParentOf(argumentList);
   }
+
   void visitChildren(ASTVisitor visitor) {
     safelyVisitChild(constructorName, visitor);
     safelyVisitChild(_argumentList, visitor);
   }
 }
+
 /**
  * Instances of the class `IntegerLiteral` represent an integer literal expression.
  *
  * <pre>
  * integerLiteral ::=
  *     decimalIntegerLiteral
  *   | hexidecimalIntegerLiteral
  *
  * decimalIntegerLiteral ::=
  *     decimalDigit+
  *
  * hexidecimalIntegerLiteral ::=
  *     '0x' hexidecimalDigit+
  *   | '0X' hexidecimalDigit+
  * </pre>
  *
  * @coverage dart.engine.ast
  */
 class IntegerLiteral extends Literal {
-
   /**
    * The token representing the literal.
    */
   Token literal;
 
   /**
    * The value of the literal.
    */
   int value = 0;
 
   /**
    * Initialize a newly created integer literal.
    *
    * @param literal the token representing the literal
    * @param value the value of the literal
    */
   IntegerLiteral.full(Token literal, int value) {
     this.literal = literal;
     this.value = value;
   }
 
   /**
    * Initialize a newly created integer literal.
    *
    * @param literal the token representing the literal
    * @param value the value of the literal
    */
   IntegerLiteral({Token literal, int value}) : this.full(literal, value);
+
   accept(ASTVisitor visitor) => visitor.visitIntegerLiteral(this);
+
   Token get beginToken => literal;
+
   Token get endToken => literal;
+
   void visitChildren(ASTVisitor visitor) {
   }
 }
+
 /**
  * The abstract class `InterpolationElement` defines the behavior common to elements within a
  * [StringInterpolation].
  *
  * <pre>
  * interpolationElement ::=
  *     [InterpolationExpression]
  *   | [InterpolationString]
  * </pre>
  *
  * @coverage dart.engine.ast
  */
 abstract class InterpolationElement extends ASTNode {
 }
+
 /**
  * Instances of the class `InterpolationExpression` represent an expression embedded in a
  * string interpolation.
  *
  * <pre>
  * interpolationExpression ::=
  *     '$' [SimpleIdentifier]
  *   | '$' '{' [Expression] '}'
  * </pre>
  *
  * @coverage dart.engine.ast
  */
 class InterpolationExpression extends InterpolationElement {
-
   /**
    * The token used to introduce the interpolation expression; either '$' if the expression is a
    * simple identifier or '${' if the expression is a full expression.
    */
   Token leftBracket;
 
   /**
    * The expression to be evaluated for the value to be converted into a string.
    */
   Expression _expression;
@@ skipping 17 matching lines @@
   }
 
   /**
    * Initialize a newly created interpolation expression.
    *
    * @param leftBracket the left curly bracket
    * @param expression the expression to be evaluated for the value to be converted into a string
    * @param rightBracket the right curly bracket
    */
   InterpolationExpression({Token leftBracket, Expression expression, Token rightBracket}) : this.full(leftBracket, expression, rightBracket);
+
   accept(ASTVisitor visitor) => visitor.visitInterpolationExpression(this);
+
   Token get beginToken => leftBracket;
+
   Token get endToken {
     if (rightBracket != null) {
       return rightBracket;
     }
     return _expression.endToken;
   }
 
   /**
    * Return the expression to be evaluated for the value to be converted into a string.
    *
    * @return the expression to be evaluated for the value to be converted into a string
    */
   Expression get expression => _expression;
 
   /**
    * Set the expression to be evaluated for the value to be converted into a string to the given
    * expression.
    *
    * @param expression the expression to be evaluated for the value to be converted into a string
    */
   void set expression(Expression expression) {
     this._expression = becomeParentOf(expression);
   }
+
   void visitChildren(ASTVisitor visitor) {
     safelyVisitChild(_expression, visitor);
   }
 }
+
 /**
  * Instances of the class `InterpolationString` represent a non-empty substring of an
  * interpolated string.
  *
  * <pre>
  * interpolationString ::=
  *     characters
  * </pre>
  *
  * @coverage dart.engine.ast
  */
 class InterpolationString extends InterpolationElement {
-
   /**
    * The characters that will be added to the string.
    */
   Token _contents;
 
   /**
    * The value of the literal.
    */
   String _value;
 
   /**
    * Initialize a newly created string of characters that are part of a string interpolation.
    *
    * @param the characters that will be added to the string
    * @param value the value of the literal
    */
   InterpolationString.full(Token contents, String value) {
     this._contents = contents;
     this._value = value;
   }
 
   /**
    * Initialize a newly created string of characters that are part of a string interpolation.
    *
    * @param the characters that will be added to the string
    * @param value the value of the literal
    */
   InterpolationString({Token contents, String value}) : this.full(contents, value);
+
   accept(ASTVisitor visitor) => visitor.visitInterpolationString(this);
+
   Token get beginToken => _contents;
 
   /**
    * Return the characters that will be added to the string.
    *
    * @return the characters that will be added to the string
    */
   Token get contents => _contents;
+
   Token get endToken => _contents;
 
   /**
    * Return the value of the literal.
    *
    * @return the value of the literal
    */
   String get value => _value;
 
   /**
    * Set the characters that will be added to the string to those in the given string.
    *
    * @param string the characters that will be added to the string
    */
   void set contents(Token string) {
     _contents = string;
   }
 
   /**
    * Set the value of the literal to the given string.
    *
    * @param string the value of the literal
    */
   void set value(String string) {
     _value = string;
   }
+
   void visitChildren(ASTVisitor visitor) {
   }
 }
+
 /**
  * Instances of the class `IsExpression` represent an is expression.
  *
  * <pre>
  * isExpression ::=
  *     [Expression] 'is' '!'? [TypeName]
  * </pre>
  *
  * @coverage dart.engine.ast
  */
 class IsExpression extends Expression {
-
   /**
    * The expression used to compute the value whose type is being tested.
    */
   Expression _expression;
 
   /**
    * The is operator.
    */
   Token isOperator;
 
@@ skipping 24 matching lines @@
 
   /**
    * Initialize a newly created is expression.
    *
    * @param expression the expression used to compute the value whose type is being tested
    * @param isOperator the is operator
    * @param notOperator the not operator, or `null` if the sense of the test is not negated
    * @param type the name of the type being tested for
    */
   IsExpression({Expression expression, Token isOperator, Token notOperator, TypeName type}) : this.full(expression, isOperator, notOperator, type);
+
   accept(ASTVisitor visitor) => visitor.visitIsExpression(this);
+
   Token get beginToken => _expression.beginToken;
+
   Token get endToken => _type.endToken;
 
   /**
    * Return the expression used to compute the value whose type is being tested.
    *
    * @return the expression used to compute the value whose type is being tested
    */
   Expression get expression => _expression;
 
   /**
@@ skipping 14 matching lines @@
   }
 
   /**
    * Set the name of the type being tested for to the given name.
    *
    * @param name the name of the type being tested for
    */
   void set type(TypeName name) {
     this._type = becomeParentOf(name);
   }
+
   void visitChildren(ASTVisitor visitor) {
     safelyVisitChild(_expression, visitor);
     safelyVisitChild(_type, visitor);
   }
 }
+
 /**
  * Instances of the class `Label` represent a label.
  *
  * <pre>
  * label ::=
  *     [SimpleIdentifier] ':'
  * </pre>
  *
  * @coverage dart.engine.ast
  */
 class Label extends ASTNode {
-
   /**
    * The label being associated with the statement.
    */
   SimpleIdentifier _label;
 
   /**
    * The colon that separates the label from the statement.
    */
   Token colon;
 
   /**
    * Initialize a newly created label.
    *
    * @param label the label being applied
    * @param colon the colon that separates the label from whatever follows
    */
   Label.full(SimpleIdentifier label, Token colon) {
     this._label = becomeParentOf(label);
     this.colon = colon;
   }
 
   /**
    * Initialize a newly created label.
    *
    * @param label the label being applied
    * @param colon the colon that separates the label from whatever follows
    */
   Label({SimpleIdentifier label, Token colon}) : this.full(label, colon);
+
   accept(ASTVisitor visitor) => visitor.visitLabel(this);
+
   Token get beginToken => _label.beginToken;
+
   Token get endToken => colon;
 
   /**
    * Return the label being associated with the statement.
    *
    * @return the label being associated with the statement
    */
   SimpleIdentifier get label => _label;
 
   /**
    * Set the label being associated with the statement to the given label.
    *
    * @param label the label being associated with the statement
    */
   void set label(SimpleIdentifier label) {
     this._label = becomeParentOf(label);
   }
+
   void visitChildren(ASTVisitor visitor) {
     safelyVisitChild(_label, visitor);
   }
 }
+
 /**
  * Instances of the class `LabeledStatement` represent a statement that has a label associated
  * with them.
  *
  * <pre>
  * labeledStatement ::=
  *    [Label]+ [Statement]
  * </pre>
  *
  * @coverage dart.engine.ast
  */
 class LabeledStatement extends Statement {
-
   /**
    * The labels being associated with the statement.
    */
   NodeList<Label> labels;
 
   /**
    * The statement with which the labels are being associated.
    */
   Statement _statement;
 
   /**
    * Initialize a newly created labeled statement.
    *
    * @param labels the labels being associated with the statement
    * @param statement the statement with which the labels are being associated
    */
   LabeledStatement.full(List<Label> labels, Statement statement) {
     this.labels = new NodeList<Label>(this);
     this.labels.addAll(labels);
     this._statement = becomeParentOf(statement);
   }
 
   /**
    * Initialize a newly created labeled statement.
    *
    * @param labels the labels being associated with the statement
    * @param statement the statement with which the labels are being associated
    */
   LabeledStatement({List<Label> labels, Statement statement}) : this.full(labels, statement);
+
   accept(ASTVisitor visitor) => visitor.visitLabeledStatement(this);
+
   Token get beginToken {
     if (!labels.isEmpty) {
       return labels.beginToken;
     }
     return _statement.beginToken;
   }
+
   Token get endToken => _statement.endToken;
 
   /**
    * Return the statement with which the labels are being associated.
    *
    * @return the statement with which the labels are being associated
    */
   Statement get statement => _statement;
 
   /**
    * Set the statement with which the labels are being associated to the given statement.
    *
    * @param statement the statement with which the labels are being associated
    */
   void set statement(Statement statement) {
     this._statement = becomeParentOf(statement);
   }
+
   void visitChildren(ASTVisitor visitor) {
     labels.accept(visitor);
     safelyVisitChild(_statement, visitor);
   }
 }
+
 /**
  * Instances of the class `LibraryDirective` represent a library directive.
  *
  * <pre>
  * libraryDirective ::=
  *     [Annotation] 'library' [Identifier] ';'
  * </pre>
  *
  * @coverage dart.engine.ast
  */
 class LibraryDirective extends Directive {
-
   /**
    * The token representing the 'library' token.
    */
   Token libraryToken;
 
   /**
    * The name of the library being defined.
    */
   LibraryIdentifier _name;
 
@@ skipping 20 matching lines @@
   /**
    * Initialize a newly created library directive.
    *
    * @param comment the documentation comment associated with this directive
    * @param metadata the annotations associated with the directive
    * @param libraryToken the token representing the 'library' token
    * @param name the name of the library being defined
    * @param semicolon the semicolon terminating the directive
    */
   LibraryDirective({Comment comment, List<Annotation> metadata, Token libraryToken, LibraryIdentifier name, Token semicolon}) : this.full(comment, metadata, libraryToken, name, semicolon);
+
   accept(ASTVisitor visitor) => visitor.visitLibraryDirective(this);
+
   Token get endToken => semicolon;
+
   Token get keyword => libraryToken;
 
   /**
    * Return the name of the library being defined.
    *
    * @return the name of the library being defined
    */
   LibraryIdentifier get name => _name;
 
   /**
    * Set the name of the library being defined to the given name.
    *
    * @param name the name of the library being defined
    */
   void set name(LibraryIdentifier name) {
     this._name = becomeParentOf(name);
   }
+
   void visitChildren(ASTVisitor visitor) {
     super.visitChildren(visitor);
     safelyVisitChild(_name, visitor);
   }
+
   Token get firstTokenAfterCommentAndMetadata => libraryToken;
 }
+
 /**
  * Instances of the class `LibraryIdentifier` represent the identifier for a library.
  *
  * <pre>
  * libraryIdentifier ::=
  *     [SimpleIdentifier] ('.' [SimpleIdentifier])*
  * </pre>
  *
  * @coverage dart.engine.ast
  */
 class LibraryIdentifier extends Identifier {
-
   /**
    * The components of the identifier.
    */
   NodeList<SimpleIdentifier> components;
 
   /**
    * Initialize a newly created prefixed identifier.
    *
    * @param components the components of the identifier
    */
   LibraryIdentifier.full(List<SimpleIdentifier> components) {
     this.components = new NodeList<SimpleIdentifier>(this);
     this.components.addAll(components);
   }
 
   /**
    * Initialize a newly created prefixed identifier.
    *
    * @param components the components of the identifier
    */
   LibraryIdentifier({List<SimpleIdentifier> components}) : this.full(components);
+
   accept(ASTVisitor visitor) => visitor.visitLibraryIdentifier(this);
+
   Token get beginToken => components.beginToken;
+
   Element get bestElement => staticElement;
+
   Token get endToken => components.endToken;
+
   String get name {
     JavaStringBuilder builder = new JavaStringBuilder();
     bool needsPeriod = false;
     for (SimpleIdentifier identifier in components) {
       if (needsPeriod) {
         builder.append(".");
       } else {
         needsPeriod = true;
       }
       builder.append(identifier.name);
     }
     return builder.toString();
   }
+
   Element get propagatedElement => null;
+
   Element get staticElement => null;
+
   void visitChildren(ASTVisitor visitor) {
     components.accept(visitor);
   }
 }
+
 /**
  * Instances of the class `ListLiteral` represent a list literal.
  *
  * <pre>
  * listLiteral ::=
  *     'const'? ('<' [TypeName] '>')? '[' ([Expression] ','?)? ']'
  * </pre>
  *
  * @coverage dart.engine.ast
  */
 class ListLiteral extends TypedLiteral {
-
   /**
    * The left square bracket.
    */
   Token _leftBracket;
 
   /**
    * The expressions used to compute the elements of the list.
    */
   NodeList<Expression> elements;
 
@@ skipping 23 matching lines @@
    * Initialize a newly created list literal.
    *
    * @param constKeyword the token representing the 'const' keyword
    * @param typeArguments the type argument associated with this literal, or `null` if no type
    *          arguments were declared
    * @param leftBracket the left square bracket
    * @param elements the expressions used to compute the elements of the list
    * @param rightBracket the right square bracket
    */
   ListLiteral({Token constKeyword, TypeArgumentList typeArguments, Token leftBracket, List<Expression> elements, Token rightBracket}) : this.full(constKeyword, typeArguments, leftBracket, elements, rightBracket);
+
   accept(ASTVisitor visitor) => visitor.visitListLiteral(this);
+
   Token get beginToken {
     Token token = constKeyword;
     if (token != null) {
       return token;
     }
     TypeArgumentList typeArguments = this.typeArguments;
     if (typeArguments != null) {
       return typeArguments.beginToken;
     }
     return _leftBracket;
   }
+
   Token get endToken => _rightBracket;
 
   /**
    * Return the left square bracket.
    *
    * @return the left square bracket
    */
   Token get leftBracket => _leftBracket;
 
   /**
@@ skipping 13 matching lines @@
   }
 
   /**
    * Set the right square bracket to the given token.
    *
    * @param bracket the right square bracket
    */
   void set rightBracket(Token bracket) {
     _rightBracket = bracket;
   }
+
   void visitChildren(ASTVisitor visitor) {
     super.visitChildren(visitor);
     elements.accept(visitor);
   }
 }
+
 /**
  * The abstract class `Literal` defines the behavior common to nodes that represent a literal
  * expression.
  *
  * <pre>
  * literal ::=
  *     [BooleanLiteral]
  *   | [DoubleLiteral]
  *   | [IntegerLiteral]
  *   | [ListLiteral]
  *   | [MapLiteral]
  *   | [NullLiteral]
  *   | [StringLiteral]
  * </pre>
  *
  * @coverage dart.engine.ast
  */
 abstract class Literal extends Expression {
 }
+
 /**
  * Instances of the class `MapLiteral` represent a literal map.
  *
  * <pre>
  * mapLiteral ::=
  *     'const'? ('<' [TypeName] (',' [TypeName])* '>')? '{' ([MapLiteralEntry] (',' [MapLiteralEntry])* ','?)? '}'
  * </pre>
  *
  * @coverage dart.engine.ast
  */
 class MapLiteral extends TypedLiteral {
-
   /**
    * The left curly bracket.
    */
   Token _leftBracket;
 
   /**
    * The entries in the map.
    */
   NodeList<MapLiteralEntry> entries;
 
@@ skipping 23 matching lines @@
    * Initialize a newly created map literal.
    *
    * @param constKeyword the token representing the 'const' keyword
    * @param typeArguments the type argument associated with this literal, or `null` if no type
    *          arguments were declared
    * @param leftBracket the left curly bracket
    * @param entries the entries in the map
    * @param rightBracket the right curly bracket
    */
   MapLiteral({Token constKeyword, TypeArgumentList typeArguments, Token leftBracket, List<MapLiteralEntry> entries, Token rightBracket}) : this.full(constKeyword, typeArguments, leftBracket, entries, rightBracket);
+
   accept(ASTVisitor visitor) => visitor.visitMapLiteral(this);
+
   Token get beginToken {
     Token token = constKeyword;
     if (token != null) {
       return token;
     }
     TypeArgumentList typeArguments = this.typeArguments;
     if (typeArguments != null) {
       return typeArguments.beginToken;
     }
     return _leftBracket;
   }
+
   Token get endToken => _rightBracket;
 
   /**
    * Return the left curly bracket.
    *
    * @return the left curly bracket
    */
   Token get leftBracket => _leftBracket;
 
   /**
@@ skipping 13 matching lines @@
   }
 
   /**
    * Set the right curly bracket to the given token.
    *
    * @param bracket the right curly bracket
    */
   void set rightBracket(Token bracket) {
     _rightBracket = bracket;
   }
+
   void visitChildren(ASTVisitor visitor) {
     super.visitChildren(visitor);
     entries.accept(visitor);
   }
 }
+
 /**
  * Instances of the class `MapLiteralEntry` represent a single key/value pair in a map
  * literal.
  *
  * <pre>
  * mapLiteralEntry ::=
  *     [Expression] ':' [Expression]
  * </pre>
  *
  * @coverage dart.engine.ast
  */
 class MapLiteralEntry extends ASTNode {
-
   /**
    * The expression computing the key with which the value will be associated.
    */
   Expression _key;
 
   /**
    * The colon that separates the key from the value.
    */
   Token separator;
 
@@ skipping 16 matching lines @@
   }
 
   /**
    * Initialize a newly created map literal entry.
    *
    * @param key the expression computing the key with which the value will be associated
    * @param separator the colon that separates the key from the value
    * @param value the expression computing the value that will be associated with the key
    */
   MapLiteralEntry({Expression key, Token separator, Expression value}) : this.full(key, separator, value);
+
   accept(ASTVisitor visitor) => visitor.visitMapLiteralEntry(this);
+
   Token get beginToken => _key.beginToken;
+
   Token get endToken => _value.endToken;
 
   /**
    * Return the expression computing the key with which the value will be associated.
    *
    * @return the expression computing the key with which the value will be associated
    */
   Expression get key => _key;
 
   /**
@@ skipping 15 matching lines @@
 
   /**
    * Set the expression computing the value that will be associated with the key to the given
    * expression.
    *
    * @param expression the expression computing the value that will be associated with the key
    */
   void set value(Expression expression) {
     _value = becomeParentOf(expression);
   }
+
   void visitChildren(ASTVisitor visitor) {
     safelyVisitChild(_key, visitor);
     safelyVisitChild(_value, visitor);
   }
 }
+
 /**
  * Instances of the class `MethodDeclaration` represent a method declaration.
  *
  * <pre>
  * methodDeclaration ::=
  *     methodSignature [FunctionBody]
  *
  * methodSignature ::=
  *     'external'? ('abstract' | 'static')? [Type]? ('get' | 'set')? methodName
  *     [FormalParameterList]
  *
  * methodName ::=
  *     [SimpleIdentifier]
  *   | 'operator' [SimpleIdentifier]
  * </pre>
  *
  * @coverage dart.engine.ast
  */
 class MethodDeclaration extends ClassMember {
-
   /**
    * The token for the 'external' keyword, or `null` if the constructor is not external.
    */
   Token externalKeyword;
 
   /**
    * The token representing the 'abstract' or 'static' keyword, or `null` if neither modifier
    * was specified.
    */
   Token modifierKeyword;
@@ skipping 65 matching lines @@
    * @param modifierKeyword the token representing the 'abstract' or 'static' keyword
    * @param returnType the return type of the method
    * @param propertyKeyword the token representing the 'get' or 'set' keyword
    * @param operatorKeyword the token representing the 'operator' keyword
    * @param name the name of the method
    * @param parameters the parameters associated with the method, or `null` if this method
    *          declares a getter
    * @param body the body of the method
    */
   MethodDeclaration({Comment comment, List<Annotation> metadata, Token externalKeyword, Token modifierKeyword, TypeName returnType, Token propertyKeyword, Token operatorKeyword, SimpleIdentifier name, FormalParameterList parameters, FunctionBody body}) : this.full(comment, metadata, externalKeyword, modifierKeyword, returnType, propertyKeyword, operatorKeyword, name, parameters, body);
+
   accept(ASTVisitor visitor) => visitor.visitMethodDeclaration(this);
 
   /**
    * Return the body of the method.
    *
    * @return the body of the method
    */
   FunctionBody get body => _body;
 
   /**
    * Return the element associated with this method, or `null` if the AST structure has not
    * been resolved. The element can either be a [MethodElement], if this represents the
    * declaration of a normal method, or a [PropertyAccessorElement] if this represents the
    * declaration of either a getter or a setter.
    *
    * @return the element associated with this method
    */
   ExecutableElement get element => _name != null ? (_name.staticElement as ExecutableElement) : null;
+
   Token get endToken => _body.endToken;
 
   /**
    * Return the name of the method.
    *
    * @return the name of the method
    */
   SimpleIdentifier get name => _name;
 
   /**
@@ skipping 16 matching lines @@
    *
    * @return `true` if this method is declared to be an abstract method
    */
   bool get isAbstract => externalKeyword == null && (_body is EmptyFunctionBody);
 
   /**
    * Return `true` if this method declares a getter.
    *
    * @return `true` if this method declares a getter
    */
-  bool get isGetter => propertyKeyword != null && identical(((propertyKeyword as KeywordToken)).keyword, Keyword.GET);
+  bool get isGetter => propertyKeyword != null && identical((propertyKeyword as KeywordToken).keyword, Keyword.GET);
 
   /**
    * Return `true` if this method declares an operator.
    *
    * @return `true` if this method declares an operator
    */
   bool get isOperator => operatorKeyword != null;
 
   /**
    * Return `true` if this method declares a setter.
    *
    * @return `true` if this method declares a setter
    */
-  bool get isSetter => propertyKeyword != null && identical(((propertyKeyword as KeywordToken)).keyword, Keyword.SET);
+  bool get isSetter => propertyKeyword != null && identical((propertyKeyword as KeywordToken).keyword, Keyword.SET);
 
   /**
    * Return `true` if this method is declared to be a static method.
    *
    * @return `true` if this method is declared to be a static method
    */
-  bool get isStatic => modifierKeyword != null && identical(((modifierKeyword as KeywordToken)).keyword, Keyword.STATIC);
+  bool get isStatic => modifierKeyword != null && identical((modifierKeyword as KeywordToken).keyword, Keyword.STATIC);
 
   /**
    * Set the body of the method to the given function body.
    *
    * @param functionBody the body of the method
    */
   void set body(FunctionBody functionBody) {
     _body = becomeParentOf(functionBody);
   }
 
@@ skipping 16 matching lines @@
   }
 
   /**
    * Set the return type of the method to the given type name.
    *
    * @param typeName the return type of the method
    */
   void set returnType(TypeName typeName) {
     _returnType = becomeParentOf(typeName);
   }
+
   void visitChildren(ASTVisitor visitor) {
     super.visitChildren(visitor);
     safelyVisitChild(_returnType, visitor);
     safelyVisitChild(_name, visitor);
     safelyVisitChild(_parameters, visitor);
     safelyVisitChild(_body, visitor);
   }
+
   Token get firstTokenAfterCommentAndMetadata {
     if (modifierKeyword != null) {
       return modifierKeyword;
     } else if (_returnType != null) {
       return _returnType.beginToken;
     } else if (propertyKeyword != null) {
       return propertyKeyword;
     } else if (operatorKeyword != null) {
       return operatorKeyword;
     }
     return _name.beginToken;
   }
 }
+
 /**
  * Instances of the class `MethodInvocation` represent the invocation of either a function or
  * a method. Invocations of functions resulting from evaluating an expression are represented by
  * [FunctionExpressionInvocation] nodes. Invocations of getters
  * and setters are represented by either [PrefixedIdentifier] or
  * [PropertyAccess] nodes.
  *
  * <pre>
  * methodInvoction ::=
  *     ([Expression] '.')? [SimpleIdentifier] [ArgumentList]
  * </pre>
  *
  * @coverage dart.engine.ast
  */
 class MethodInvocation extends Expression {
-
   /**
    * The expression producing the object on which the method is defined, or `null` if there is
    * no target (that is, the target is implicitly `this`).
    */
   Expression _target;
 
   /**
    * The period that separates the target from the method name, or `null` if there is no
    * target.
    */
@@ skipping 26 matching lines @@
 
   /**
    * Initialize a newly created method invocation.
    *
    * @param target the expression producing the object on which the method is defined
    * @param period the period that separates the target from the method name
    * @param methodName the name of the method being invoked
    * @param argumentList the list of arguments to the method
    */
   MethodInvocation({Expression target, Token period, SimpleIdentifier methodName, ArgumentList argumentList}) : this.full(target, period, methodName, argumentList);
+
   accept(ASTVisitor visitor) => visitor.visitMethodInvocation(this);
 
   /**
    * Return the list of arguments to the method.
    *
    * @return the list of arguments to the method
    */
   ArgumentList get argumentList => _argumentList;
+
   Token get beginToken {
     if (_target != null) {
       return _target.beginToken;
     } else if (period != null) {
       return period;
     }
     return _methodName.beginToken;
   }
+
   Token get endToken => _argumentList.endToken;
 
   /**
    * Return the name of the method being invoked.
    *
    * @return the name of the method being invoked
    */
   SimpleIdentifier get methodName => _methodName;
 
   /**
    * Return the expression used to compute the receiver of the invocation. If this invocation is not
    * part of a cascade expression, then this is the same as [getTarget]. If this invocation
    * is part of a cascade expression, then the target stored with the cascade expression is
    * returned.
    *
    * @return the expression used to compute the receiver of the invocation
    * @see #getTarget()
    */
   Expression get realTarget {
     if (isCascaded) {
       ASTNode ancestor = parent;
       while (ancestor is! CascadeExpression) {
         if (ancestor == null) {
           return _target;
         }
         ancestor = ancestor.parent;
       }
-      return ((ancestor as CascadeExpression)).target;
+      return (ancestor as CascadeExpression).target;
     }
     return _target;
   }
 
   /**
    * Return the expression producing the object on which the method is defined, or `null` if
    * there is no target (that is, the target is implicitly `this`) or if this method
    * invocation is part of a cascade expression.
    *
    * @return the expression producing the object on which the method is defined
@@ skipping 29 matching lines @@
   }
 
   /**
    * Set the expression producing the object on which the method is defined to the given expression.
    *
    * @param expression the expression producing the object on which the method is defined
    */
   void set target(Expression expression) {
     _target = becomeParentOf(expression);
   }
+
   void visitChildren(ASTVisitor visitor) {
     safelyVisitChild(_target, visitor);
     safelyVisitChild(_methodName, visitor);
     safelyVisitChild(_argumentList, visitor);
   }
 }
+
 /**
  * Instances of the class `NamedExpression` represent an expression that has a name associated
  * with it. They are used in method invocations when there are named parameters.
  *
  * <pre>
  * namedExpression ::=
  *     [Label] [Expression]
  * </pre>
  *
  * @coverage dart.engine.ast
  */
 class NamedExpression extends Expression {
-
   /**
    * The name associated with the expression.
    */
   Label _name;
 
   /**
    * The expression with which the name is associated.
    */
   Expression _expression;
 
   /**
    * Initialize a newly created named expression.
    *
    * @param name the name associated with the expression
    * @param expression the expression with which the name is associated
    */
   NamedExpression.full(Label name, Expression expression) {
     this._name = becomeParentOf(name);
     this._expression = becomeParentOf(expression);
   }
 
   /**
    * Initialize a newly created named expression.
    *
    * @param name the name associated with the expression
    * @param expression the expression with which the name is associated
    */
   NamedExpression({Label name, Expression expression}) : this.full(name, expression);
+
   accept(ASTVisitor visitor) => visitor.visitNamedExpression(this);
+
   Token get beginToken => _name.beginToken;
 
   /**
    * Return the element representing the parameter being named by this expression, or `null`
    * if the AST structure has not been resolved or if there is no parameter with the same name as
    * this expression.
    *
    * @return the element representing the parameter being named by this expression
    */
   ParameterElement get element {
     Element element = _name.label.staticElement;
     if (element is ParameterElement) {
       return element as ParameterElement;
     }
     return null;
   }
+
   Token get endToken => _expression.endToken;
 
   /**
    * Return the expression with which the name is associated.
    *
    * @return the expression with which the name is associated
    */
   Expression get expression => _expression;
 
   /**
@@ skipping 13 matching lines @@
   }
 
   /**
    * Set the name associated with the expression to the given identifier.
    *
    * @param identifier the name associated with the expression
    */
   void set name(Label identifier) {
     _name = becomeParentOf(identifier);
   }
+
   void visitChildren(ASTVisitor visitor) {
     safelyVisitChild(_name, visitor);
     safelyVisitChild(_expression, visitor);
   }
 }
+
 /**
  * The abstract class `NamespaceDirective` defines the behavior common to nodes that represent
  * a directive that impacts the namespace of a library.
  *
  * <pre>
  * directive ::=
  *     [ExportDirective]
  *   | [ImportDirective]
  * </pre>
  *
  * @coverage dart.engine.ast
  */
 abstract class NamespaceDirective extends UriBasedDirective {
-
   /**
    * The token representing the 'import' or 'export' keyword.
    */
   Token _keyword;
 
   /**
    * The combinators used to control which names are imported or exported.
    */
   NodeList<Combinator> combinators;
 
@@ skipping 23 matching lines @@
    * Initialize a newly created namespace directive.
    *
    * @param comment the documentation comment associated with this directive
    * @param metadata the annotations associated with the directive
    * @param keyword the token representing the 'import' or 'export' keyword
    * @param libraryUri the URI of the library being imported or exported
    * @param combinators the combinators used to control which names are imported or exported
    * @param semicolon the semicolon terminating the directive
    */
   NamespaceDirective({Comment comment, List<Annotation> metadata, Token keyword, StringLiteral libraryUri, List<Combinator> combinators, Token semicolon}) : this.full(comment, metadata, keyword, libraryUri, combinators, semicolon);
+
   Token get endToken => semicolon;
+
   Token get keyword => _keyword;
+
   LibraryElement get uriElement;
 
   /**
    * Set the token representing the 'import' or 'export' keyword to the given token.
    *
    * @param exportToken the token representing the 'import' or 'export' keyword
    */
   void set keyword(Token exportToken) {
     this._keyword = exportToken;
   }
+
   Token get firstTokenAfterCommentAndMetadata => _keyword;
 }
+
 /**
  * Instances of the class `NativeClause` represent the "native" clause in an class
  * declaration.
  *
  * <pre>
  * nativeClause ::=
  *     'native' [StringLiteral]
  * </pre>
  *
  * @coverage dart.engine.ast
  */
 class NativeClause extends ASTNode {
-
   /**
    * The token representing the 'native' keyword.
    */
   Token keyword;
 
   /**
    * The name of the native object that implements the class.
    */
   StringLiteral name;
 
   /**
    * Initialize a newly created native clause.
    *
    * @param keyword the token representing the 'native' keyword
    * @param name the name of the native object that implements the class.
    */
   NativeClause.full(Token keyword, StringLiteral name) {
     this.keyword = keyword;
     this.name = name;
   }
 
   /**
    * Initialize a newly created native clause.
    *
    * @param keyword the token representing the 'native' keyword
    * @param name the name of the native object that implements the class.
    */
   NativeClause({Token keyword, StringLiteral name}) : this.full(keyword, name);
+
   accept(ASTVisitor visitor) => visitor.visitNativeClause(this);
+
   Token get beginToken => keyword;
+
   Token get endToken => name.endToken;
+
   void visitChildren(ASTVisitor visitor) {
     safelyVisitChild(name, visitor);
   }
 }
+
 /**
  * Instances of the class `NativeFunctionBody` represent a function body that consists of a
  * native keyword followed by a string literal.
  *
  * <pre>
  * nativeFunctionBody ::=
  *     'native' [SimpleStringLiteral] ';'
  * </pre>
  *
  * @coverage dart.engine.ast
  */
 class NativeFunctionBody extends FunctionBody {
-
   /**
    * The token representing 'native' that marks the start of the function body.
    */
   Token nativeToken;
 
   /**
    * The string literal, after the 'native' token.
    */
   StringLiteral stringLiteral;
 
@@ skipping 18 matching lines @@
 
   /**
    * Initialize a newly created function body consisting of the 'native' token, a string literal,
    * and a semicolon.
    *
    * @param nativeToken the token representing 'native' that marks the start of the function body
    * @param stringLiteral the string literal
    * @param semicolon the token representing the semicolon that marks the end of the function body
    */
   NativeFunctionBody({Token nativeToken, StringLiteral stringLiteral, Token semicolon}) : this.full(nativeToken, stringLiteral, semicolon);
+
   accept(ASTVisitor visitor) => visitor.visitNativeFunctionBody(this);
+
   Token get beginToken => nativeToken;
+
   Token get endToken => semicolon;
+
   void visitChildren(ASTVisitor visitor) {
     safelyVisitChild(stringLiteral, visitor);
   }
 }
+
 /**
  * The abstract class `NormalFormalParameter` defines the behavior common to formal parameters
  * that are required (are not optional).
  *
  * <pre>
  * normalFormalParameter ::=
  *     [FunctionTypedFormalParameter]
  *   | [FieldFormalParameter]
  *   | [SimpleFormalParameter]
  * </pre>
  *
  * @coverage dart.engine.ast
  */
 abstract class NormalFormalParameter extends FormalParameter {
-
   /**
    * The documentation comment associated with this parameter, or `null` if this parameter
    * does not have a documentation comment associated with it.
    */
   Comment _comment;
 
   /**
    * The annotations associated with this parameter.
    */
   NodeList<Annotation> metadata;
@@ skipping 26 matching lines @@
    */
   NormalFormalParameter({Comment comment, List<Annotation> metadata, SimpleIdentifier identifier}) : this.full(comment, metadata, identifier);
 
   /**
    * Return the documentation comment associated with this parameter, or `null` if this
    * parameter does not have a documentation comment associated with it.
    *
    * @return the documentation comment associated with this parameter
    */
   Comment get documentationComment => _comment;
+
   SimpleIdentifier get identifier => _identifier;
+
   ParameterKind get kind {
     ASTNode parent = this.parent;
     if (parent is DefaultFormalParameter) {
-      return ((parent as DefaultFormalParameter)).kind;
+      return (parent as DefaultFormalParameter).kind;
     }
     return ParameterKind.REQUIRED;
   }
 
   /**
    * Set the documentation comment associated with this parameter to the given comment
    *
    * @param comment the documentation comment to be associated with this parameter
    */
   void set documentationComment(Comment comment) {
     this._comment = becomeParentOf(comment);
   }
 
   /**
    * Set the name of the parameter being declared to the given identifier.
    *
    * @param identifier the name of the parameter being declared
    */
   void set identifier(SimpleIdentifier identifier) {
     this._identifier = becomeParentOf(identifier);
   }
+
   void visitChildren(ASTVisitor visitor) {
     if (commentIsBeforeAnnotations()) {
       safelyVisitChild(_comment, visitor);
       metadata.accept(visitor);
     } else {
       for (ASTNode child in sortedCommentAndAnnotations) {
         child.accept(visitor);
       }
     }
   }
@@ skipping 20 matching lines @@
    */
   List<ASTNode> get sortedCommentAndAnnotations {
     List<ASTNode> childList = new List<ASTNode>();
     childList.add(_comment);
     childList.addAll(metadata);
     List<ASTNode> children = new List.from(childList);
     children.sort(ASTNode.LEXICAL_ORDER);
     return children;
   }
 }
+
 /**
  * Instances of the class `NullLiteral` represent a null literal expression.
  *
  * <pre>
  * nullLiteral ::=
  *     'null'
  * </pre>
  *
  * @coverage dart.engine.ast
  */
 class NullLiteral extends Literal {
-
   /**
    * The token representing the literal.
    */
   Token literal;
 
   /**
    * Initialize a newly created null literal.
    *
    * @param token the token representing the literal
    */
   NullLiteral.full(Token token) {
     this.literal = token;
   }
 
   /**
    * Initialize a newly created null literal.
    *
    * @param token the token representing the literal
    */
   NullLiteral({Token token}) : this.full(token);
+
   accept(ASTVisitor visitor) => visitor.visitNullLiteral(this);
+
   Token get beginToken => literal;
+
   Token get endToken => literal;
+
   void visitChildren(ASTVisitor visitor) {
   }
 }
+
 /**
  * Instances of the class `ParenthesizedExpression` represent a parenthesized expression.
  *
  * <pre>
  * parenthesizedExpression ::=
  *     '(' [Expression] ')'
  * </pre>
  *
  * @coverage dart.engine.ast
  */
 class ParenthesizedExpression extends Expression {
-
   /**
    * The left parenthesis.
    */
   Token _leftParenthesis;
 
   /**
    * The expression within the parentheses.
    */
   Expression _expression;
 
@@ skipping 16 matching lines @@
   }
 
   /**
    * Initialize a newly created parenthesized expression.
    *
    * @param leftParenthesis the left parenthesis
    * @param expression the expression within the parentheses
    * @param rightParenthesis the right parenthesis
    */
   ParenthesizedExpression({Token leftParenthesis, Expression expression, Token rightParenthesis}) : this.full(leftParenthesis, expression, rightParenthesis);
+
   accept(ASTVisitor visitor) => visitor.visitParenthesizedExpression(this);
+
   Token get beginToken => _leftParenthesis;
+
   Token get endToken => _rightParenthesis;
 
   /**
    * Return the expression within the parentheses.
    *
    * @return the expression within the parentheses
    */
   Expression get expression => _expression;
 
   /**
@@ skipping 29 matching lines @@
   }
 
   /**
    * Set the right parenthesis to the given token.
    *
    * @param parenthesis the right parenthesis
    */
   void set rightParenthesis(Token parenthesis) {
     _rightParenthesis = parenthesis;
   }
+
   void visitChildren(ASTVisitor visitor) {
     safelyVisitChild(_expression, visitor);
   }
 }
+
 /**
  * Instances of the class `PartDirective` represent a part directive.
  *
  * <pre>
  * partDirective ::=
  *     [Annotation] 'part' [StringLiteral] ';'
  * </pre>
  *
  * @coverage dart.engine.ast
  */
 class PartDirective extends UriBasedDirective {
-
   /**
    * The token representing the 'part' token.
    */
   Token partToken;
 
   /**
    * The semicolon terminating the directive.
    */
   Token semicolon;
 
@@ skipping 14 matching lines @@
   /**
    * Initialize a newly created part directive.
    *
    * @param comment the documentation comment associated with this directive
    * @param metadata the annotations associated with the directive
    * @param partToken the token representing the 'part' token
    * @param partUri the URI of the part being included
    * @param semicolon the semicolon terminating the directive
    */
   PartDirective({Comment comment, List<Annotation> metadata, Token partToken, StringLiteral partUri, Token semicolon}) : this.full(comment, metadata, partToken, partUri, semicolon);
+
   accept(ASTVisitor visitor) => visitor.visitPartDirective(this);
+
   Token get endToken => semicolon;
+
   Token get keyword => partToken;
+
   CompilationUnitElement get uriElement => element as CompilationUnitElement;
+
   Token get firstTokenAfterCommentAndMetadata => partToken;
 }
+
 /**
  * Instances of the class `PartOfDirective` represent a part-of directive.
  *
  * <pre>
  * partOfDirective ::=
  *     [Annotation] 'part' 'of' [Identifier] ';'
  * </pre>
  *
  * @coverage dart.engine.ast
  */
 class PartOfDirective extends Directive {
-
   /**
    * The token representing the 'part' token.
    */
   Token partToken;
 
   /**
    * The token representing the 'of' token.
    */
   Token ofToken;
 
@@ skipping 28 matching lines @@
    * Initialize a newly created part-of directive.
    *
    * @param comment the documentation comment associated with this directive
    * @param metadata the annotations associated with the directive
    * @param partToken the token representing the 'part' token
    * @param ofToken the token representing the 'of' token
    * @param libraryName the name of the library that the containing compilation unit is part of
    * @param semicolon the semicolon terminating the directive
    */
   PartOfDirective({Comment comment, List<Annotation> metadata, Token partToken, Token ofToken, LibraryIdentifier libraryName, Token semicolon}) : this.full(comment, metadata, partToken, ofToken, libraryName, semicolon);
+
   accept(ASTVisitor visitor) => visitor.visitPartOfDirective(this);
+
   Token get endToken => semicolon;
+
   Token get keyword => partToken;
 
   /**
    * Return the name of the library that the containing compilation unit is part of.
    *
    * @return the name of the library that the containing compilation unit is part of
    */
   LibraryIdentifier get libraryName => _libraryName;
 
   /**
    * Set the name of the library that the containing compilation unit is part of to the given name.
    *
    * @param libraryName the name of the library that the containing compilation unit is part of
    */
   void set libraryName(LibraryIdentifier libraryName) {
     this._libraryName = becomeParentOf(libraryName);
   }
+
   void visitChildren(ASTVisitor visitor) {
     super.visitChildren(visitor);
     safelyVisitChild(_libraryName, visitor);
   }
+
   Token get firstTokenAfterCommentAndMetadata => partToken;
 }
+
 /**
  * Instances of the class `PostfixExpression` represent a postfix unary expression.
  *
  * <pre>
  * postfixExpression ::=
  *     [Expression] [Token]
  * </pre>
  *
  * @coverage dart.engine.ast
  */
 class PostfixExpression extends Expression {
-
   /**
    * The expression computing the operand for the operator.
    */
   Expression _operand;
 
   /**
    * The postfix operator being applied to the operand.
    */
   Token operator;
 
@@ skipping 22 matching lines @@
     this.operator = operator;
   }
 
   /**
    * Initialize a newly created postfix expression.
    *
    * @param operand the expression computing the operand for the operator
    * @param operator the postfix operator being applied to the operand
    */
   PostfixExpression({Expression operand, Token operator}) : this.full(operand, operator);
+
   accept(ASTVisitor visitor) => visitor.visitPostfixExpression(this);
+
   Token get beginToken => _operand.beginToken;
 
   /**
    * Return the best element available for this operator. If resolution was able to find a better
    * element based on type propagation, that element will be returned. Otherwise, the element found
    * using the result of static analysis will be returned. If resolution has not been performed,
    * then `null` will be returned.
    *
    * @return the best element available for this operator
    */
   MethodElement get bestElement {
     MethodElement element = propagatedElement;
     if (element == null) {
       element = staticElement;
     }
     return element;
   }
+
   Token get endToken => operator;
 
   /**
    * Return the expression computing the operand for the operator.
    *
    * @return the expression computing the operand for the operator
    */
   Expression get operand => _operand;
 
   /**
@@ skipping 37 matching lines @@
 
   /**
    * Set the element associated with the operator based on the static type of the operand to the
    * given element.
    *
    * @param element the element to be associated with the operator
    */
   void set staticElement(MethodElement element) {
     _staticElement = element;
   }
+
   void visitChildren(ASTVisitor visitor) {
     safelyVisitChild(_operand, visitor);
   }
 
   /**
    * If the AST structure has been resolved, and the function being invoked is known based on
    * propagated type information, then return the parameter element representing the parameter to
    * which the value of the operand will be bound. Otherwise, return `null`.
    *
    * This method is only intended to be used by [Expression#getPropagatedParameterElement].
@@ skipping 26 matching lines @@
     if (_staticElement == null) {
       return null;
     }
     List<ParameterElement> parameters = _staticElement.parameters;
     if (parameters.length < 1) {
       return null;
     }
     return parameters[0];
   }
 }
+
 /**
  * Instances of the class `PrefixExpression` represent a prefix unary expression.
  *
  * <pre>
  * prefixExpression ::=
  *     [Token] [Expression]
  * </pre>
  *
  * @coverage dart.engine.ast
  */
 class PrefixExpression extends Expression {
-
   /**
    * The prefix operator being applied to the operand.
    */
   Token operator;
 
   /**
    * The expression computing the operand for the operator.
    */
   Expression _operand;
 
@@ skipping 22 matching lines @@
     this._operand = becomeParentOf(operand);
   }
 
   /**
    * Initialize a newly created prefix expression.
    *
    * @param operator the prefix operator being applied to the operand
    * @param operand the expression computing the operand for the operator
    */
   PrefixExpression({Token operator, Expression operand}) : this.full(operator, operand);
+
   accept(ASTVisitor visitor) => visitor.visitPrefixExpression(this);
+
   Token get beginToken => operator;
 
   /**
    * Return the best element available for this operator. If resolution was able to find a better
    * element based on type propagation, that element will be returned. Otherwise, the element found
    * using the result of static analysis will be returned. If resolution has not been performed,
    * then `null` will be returned.
    *
    * @return the best element available for this operator
    */
   MethodElement get bestElement {
     MethodElement element = propagatedElement;
     if (element == null) {
       element = staticElement;
     }
     return element;
   }
+
   Token get endToken => _operand.endToken;
 
   /**
    * Return the expression computing the operand for the operator.
    *
    * @return the expression computing the operand for the operator
    */
   Expression get operand => _operand;
 
   /**
@@ skipping 37 matching lines @@
 
   /**
    * Set the element associated with the operator based on the static type of the operand to the
    * given element.
    *
    * @param element the static element to be associated with the operator
    */
   void set staticElement(MethodElement element) {
     _staticElement = element;
   }
+
   void visitChildren(ASTVisitor visitor) {
     safelyVisitChild(_operand, visitor);
   }
 
   /**
    * If the AST structure has been resolved, and the function being invoked is known based on
    * propagated type information, then return the parameter element representing the parameter to
    * which the value of the operand will be bound. Otherwise, return `null`.
    *
    * This method is only intended to be used by [Expression#getPropagatedParameterElement].
@@ skipping 26 matching lines @@
     if (_staticElement == null) {
       return null;
     }
     List<ParameterElement> parameters = _staticElement.parameters;
     if (parameters.length < 1) {
       return null;
     }
     return parameters[0];
   }
 }
+
 /**
  * Instances of the class `PrefixedIdentifier` represent either an identifier that is prefixed
  * or an access to an object property where the target of the property access is a simple
  * identifier.
  *
  * <pre>
  * prefixedIdentifier ::=
  *     [SimpleIdentifier] '.' [SimpleIdentifier]
  * </pre>
  *
  * @coverage dart.engine.ast
  */
 class PrefixedIdentifier extends Identifier {
-
   /**
    * The prefix associated with the library in which the identifier is defined.
    */
   SimpleIdentifier _prefix;
 
   /**
    * The period used to separate the prefix from the identifier.
    */
   Token period;
 
@@ skipping 16 matching lines @@
   }
 
   /**
    * Initialize a newly created prefixed identifier.
    *
    * @param prefix the identifier being prefixed
    * @param period the period used to separate the prefix from the identifier
    * @param identifier the prefix associated with the library in which the identifier is defined
    */
   PrefixedIdentifier({SimpleIdentifier prefix, Token period, SimpleIdentifier identifier}) : this.full(prefix, period, identifier);
+
   accept(ASTVisitor visitor) => visitor.visitPrefixedIdentifier(this);
+
   Token get beginToken => _prefix.beginToken;
+
   Element get bestElement {
     if (_identifier == null) {
       return null;
     }
     return _identifier.bestElement;
   }
+
   Token get endToken => _identifier.endToken;
 
   /**
    * Return the identifier being prefixed.
    *
    * @return the identifier being prefixed
    */
   SimpleIdentifier get identifier => _identifier;
+
   String get name => "${_prefix.name}.${_identifier.name}";
 
   /**
    * Return the prefix associated with the library in which the identifier is defined.
    *
    * @return the prefix associated with the library in which the identifier is defined
    */
   SimpleIdentifier get prefix => _prefix;
+
   Element get propagatedElement {
     if (_identifier == null) {
       return null;
     }
     return _identifier.propagatedElement;
   }
+
   Element get staticElement {
     if (_identifier == null) {
       return null;
     }
     return _identifier.staticElement;
   }
 
   /**
    * Set the identifier being prefixed to the given identifier.
    *
    * @param identifier the identifier being prefixed
    */
   void set identifier(SimpleIdentifier identifier) {
     this._identifier = becomeParentOf(identifier);
   }
 
   /**
    * Set the prefix associated with the library in which the identifier is defined to the given
    * identifier.
    *
    * @param identifier the prefix associated with the library in which the identifier is defined
    */
   void set prefix(SimpleIdentifier identifier) {
     _prefix = becomeParentOf(identifier);
   }
+
   void visitChildren(ASTVisitor visitor) {
     safelyVisitChild(_prefix, visitor);
     safelyVisitChild(_identifier, visitor);
   }
 }
+
 /**
  * Instances of the class `PropertyAccess` represent the access of a property of an object.
  *
  * Note, however, that accesses to properties of objects can also be represented as
  * [PrefixedIdentifier] nodes in cases where the target is also a simple
  * identifier.
  *
  * <pre>
  * propertyAccess ::=
  *     [Expression] '.' [SimpleIdentifier]
  * </pre>
  *
  * @coverage dart.engine.ast
  */
 class PropertyAccess extends Expression {
-
   /**
    * The expression computing the object defining the property being accessed.
    */
   Expression _target;
 
   /**
    * The property access operator.
    */
   Token operator;
 
@@ skipping 16 matching lines @@
   }
 
   /**
    * Initialize a newly created property access expression.
    *
    * @param target the expression computing the object defining the property being accessed
    * @param operator the property access operator
    * @param propertyName the name of the property being accessed
    */
   PropertyAccess({Expression target, Token operator, SimpleIdentifier propertyName}) : this.full(target, operator, propertyName);
+
   accept(ASTVisitor visitor) => visitor.visitPropertyAccess(this);
+
   Token get beginToken {
     if (_target != null) {
       return _target.beginToken;
     }
     return operator;
   }
+
   Token get endToken => _propertyName.endToken;
 
   /**
    * Return the name of the property being accessed.
    *
    * @return the name of the property being accessed
    */
   SimpleIdentifier get propertyName => _propertyName;
 
   /**
    * Return the expression used to compute the receiver of the invocation. If this invocation is not
    * part of a cascade expression, then this is the same as [getTarget]. If this invocation
    * is part of a cascade expression, then the target stored with the cascade expression is
    * returned.
    *
    * @return the expression used to compute the receiver of the invocation
    * @see #getTarget()
    */
   Expression get realTarget {
     if (isCascaded) {
       ASTNode ancestor = parent;
       while (ancestor is! CascadeExpression) {
         if (ancestor == null) {
           return _target;
         }
         ancestor = ancestor.parent;
       }
-      return ((ancestor as CascadeExpression)).target;
+      return (ancestor as CascadeExpression).target;
     }
     return _target;
   }
 
   /**
    * Return the expression computing the object defining the property being accessed, or
    * `null` if this property access is part of a cascade expression.
    *
    * @return the expression computing the object defining the property being accessed
    * @see #getRealTarget()
    */
   Expression get target => _target;
+
   bool get isAssignable => true;
 
   /**
    * Return `true` if this expression is cascaded. If it is, then the target of this
    * expression is not stored locally but is stored in the nearest ancestor that is a
    * [CascadeExpression].
    *
    * @return `true` if this expression is cascaded
    */
   bool get isCascaded => operator != null && identical(operator.type, TokenType.PERIOD_PERIOD);
 
   /**
    * Set the name of the property being accessed to the given identifier.
    *
    * @param identifier the name of the property being accessed
    */
   void set propertyName(SimpleIdentifier identifier) {
     _propertyName = becomeParentOf(identifier);
   }
 
   /**
    * Set the expression computing the object defining the property being accessed to the given
    * expression.
    *
    * @param expression the expression computing the object defining the property being accessed
    */
   void set target(Expression expression) {
     _target = becomeParentOf(expression);
   }
+
   void visitChildren(ASTVisitor visitor) {
     safelyVisitChild(_target, visitor);
     safelyVisitChild(_propertyName, visitor);
   }
 }
+
 /**
  * Instances of the class `RedirectingConstructorInvocation` represent the invocation of a
  * another constructor in the same class from within a constructor's initialization list.
  *
  * <pre>
  * redirectingConstructorInvocation ::=
  *     'this' ('.' identifier)? arguments
  * </pre>
  *
  * @coverage dart.engine.ast
  */
 class RedirectingConstructorInvocation extends ConstructorInitializer {
-
   /**
    * The token for the 'this' keyword.
    */
   Token keyword;
 
   /**
    * The token for the period before the name of the constructor that is being invoked, or
    * `null` if the unnamed constructor is being invoked.
    */
   Token period;
@@ skipping 34 matching lines @@
   /**
    * Initialize a newly created redirecting invocation to invoke the constructor with the given name
    * with the given arguments.
    *
    * @param keyword the token for the 'this' keyword
    * @param period the token for the period before the name of the constructor that is being invoked
    * @param constructorName the name of the constructor that is being invoked
    * @param argumentList the list of arguments to the constructor
    */
   RedirectingConstructorInvocation({Token keyword, Token period, SimpleIdentifier constructorName, ArgumentList argumentList}) : this.full(keyword, period, constructorName, argumentList);
+
   accept(ASTVisitor visitor) => visitor.visitRedirectingConstructorInvocation(this);
 
   /**
    * Return the list of arguments to the constructor.
    *
    * @return the list of arguments to the constructor
    */
   ArgumentList get argumentList => _argumentList;
+
   Token get beginToken => keyword;
 
   /**
    * Return the name of the constructor that is being invoked, or `null` if the unnamed
    * constructor is being invoked.
    *
    * @return the name of the constructor that is being invoked
    */
   SimpleIdentifier get constructorName => _constructorName;
+
   Token get endToken => _argumentList.endToken;
 
   /**
    * Set the list of arguments to the constructor to the given list.
    *
    * @param argumentList the list of arguments to the constructor
    */
   void set argumentList(ArgumentList argumentList) {
     this._argumentList = becomeParentOf(argumentList);
   }
 
   /**
    * Set the name of the constructor that is being invoked to the given identifier.
    *
    * @param identifier the name of the constructor that is being invoked
    */
   void set constructorName(SimpleIdentifier identifier) {
     _constructorName = becomeParentOf(identifier);
   }
+
   void visitChildren(ASTVisitor visitor) {
     safelyVisitChild(_constructorName, visitor);
     safelyVisitChild(_argumentList, visitor);
   }
 }
+
 /**
  * Instances of the class `RethrowExpression` represent a rethrow expression.
  *
  * <pre>
  * rethrowExpression ::=
  *     'rethrow'
  * </pre>
  *
  * @coverage dart.engine.ast
  */
 class RethrowExpression extends Expression {
-
   /**
    * The token representing the 'rethrow' keyword.
    */
   Token keyword;
 
   /**
    * Initialize a newly created rethrow expression.
    *
    * @param keyword the token representing the 'rethrow' keyword
    */
   RethrowExpression.full(Token keyword) {
     this.keyword = keyword;
   }
 
   /**
    * Initialize a newly created rethrow expression.
    *
    * @param keyword the token representing the 'rethrow' keyword
    */
   RethrowExpression({Token keyword}) : this.full(keyword);
+
   accept(ASTVisitor visitor) => visitor.visitRethrowExpression(this);
+
   Token get beginToken => keyword;
+
   Token get endToken => keyword;
+
   void visitChildren(ASTVisitor visitor) {
   }
 }
+
 /**
  * Instances of the class `ReturnStatement` represent a return statement.
  *
  * <pre>
  * returnStatement ::=
  *     'return' [Expression]? ';'
  * </pre>
  *
  * @coverage dart.engine.ast
  */
 class ReturnStatement extends Statement {
-
   /**
    * The token representing the 'return' keyword.
    */
   Token keyword;
 
   /**
    * The expression computing the value to be returned, or `null` if no explicit value was
    * provided.
    */
   Expression _expression;
@@ skipping 17 matching lines @@
   }
 
   /**
    * Initialize a newly created return statement.
    *
    * @param keyword the token representing the 'return' keyword
    * @param expression the expression computing the value to be returned
    * @param semicolon the semicolon terminating the statement
    */
   ReturnStatement({Token keyword, Expression expression, Token semicolon}) : this.full(keyword, expression, semicolon);
+
   accept(ASTVisitor visitor) => visitor.visitReturnStatement(this);
+
   Token get beginToken => keyword;
+
   Token get endToken => semicolon;
 
   /**
    * Return the expression computing the value to be returned, or `null` if no explicit value
    * was provided.
    *
    * @return the expression computing the value to be returned
    */
   Expression get expression => _expression;
 
   /**
    * Set the expression computing the value to be returned to the given expression.
    *
    * @param expression the expression computing the value to be returned
    */
   void set expression(Expression expression) {
     this._expression = becomeParentOf(expression);
   }
+
   void visitChildren(ASTVisitor visitor) {
     safelyVisitChild(_expression, visitor);
   }
 }
+
 /**
  * Instances of the class `ScriptTag` represent the script tag that can optionally occur at
  * the beginning of a compilation unit.
  *
  * <pre>
  * scriptTag ::=
  *     '#!' (~NEWLINE)* NEWLINE
  * </pre>
  *
  * @coverage dart.engine.ast
  */
 class ScriptTag extends ASTNode {
-
   /**
    * The token representing this script tag.
    */
   Token scriptTag;
 
   /**
    * Initialize a newly created script tag.
    *
    * @param scriptTag the token representing this script tag
    */
   ScriptTag.full(Token scriptTag) {
     this.scriptTag = scriptTag;
   }
 
   /**
    * Initialize a newly created script tag.
    *
    * @param scriptTag the token representing this script tag
    */
   ScriptTag({Token scriptTag}) : this.full(scriptTag);
+
   accept(ASTVisitor visitor) => visitor.visitScriptTag(this);
+
   Token get beginToken => scriptTag;
+
   Token get endToken => scriptTag;
+
   void visitChildren(ASTVisitor visitor) {
   }
 }
+
 /**
  * Instances of the class `ShowCombinator` represent a combinator that restricts the names
  * being imported to those in a given list.
  *
  * <pre>
  * showCombinator ::=
  *     'show' [SimpleIdentifier] (',' [SimpleIdentifier])*
  * </pre>
  *
  * @coverage dart.engine.ast
  */
 class ShowCombinator extends Combinator {
-
   /**
    * The list of names from the library that are made visible by this combinator.
    */
   NodeList<SimpleIdentifier> shownNames;
 
   /**
    * Initialize a newly created import show combinator.
    *
    * @param keyword the comma introducing the combinator
    * @param shownNames the list of names from the library that are made visible by this combinator
    */
   ShowCombinator.full(Token keyword, List<SimpleIdentifier> shownNames) : super.full(keyword) {
     this.shownNames = new NodeList<SimpleIdentifier>(this);
     this.shownNames.addAll(shownNames);
   }
 
   /**
    * Initialize a newly created import show combinator.
    *
    * @param keyword the comma introducing the combinator
    * @param shownNames the list of names from the library that are made visible by this combinator
    */
   ShowCombinator({Token keyword, List<SimpleIdentifier> shownNames}) : this.full(keyword, shownNames);
+
   accept(ASTVisitor visitor) => visitor.visitShowCombinator(this);
+
   Token get endToken => shownNames.endToken;
+
   void visitChildren(ASTVisitor visitor) {
     shownNames.accept(visitor);
   }
 }
+
 /**
  * Instances of the class `SimpleFormalParameter` represent a simple formal parameter.
  *
  * <pre>
  * simpleFormalParameter ::=
  *     ('final' [TypeName] | 'var' | [TypeName])? [SimpleIdentifier]
  * </pre>
  *
  * @coverage dart.engine.ast
  */
 class SimpleFormalParameter extends NormalFormalParameter {
-
   /**
    * The token representing either the 'final', 'const' or 'var' keyword, or `null` if no
    * keyword was used.
    */
   Token keyword;
 
   /**
    * The name of the declared type of the parameter, or `null` if the parameter does not have
    * a declared type.
    */
@@ skipping 16 matching lines @@
   /**
    * Initialize a newly created formal parameter.
    *
    * @param comment the documentation comment associated with this parameter
    * @param metadata the annotations associated with this parameter
    * @param keyword the token representing either the 'final', 'const' or 'var' keyword
    * @param type the name of the declared type of the parameter
    * @param identifier the name of the parameter being declared
    */
   SimpleFormalParameter({Comment comment, List<Annotation> metadata, Token keyword, TypeName type, SimpleIdentifier identifier}) : this.full(comment, metadata, keyword, type, identifier);
+
   accept(ASTVisitor visitor) => visitor.visitSimpleFormalParameter(this);
+
   Token get beginToken {
     if (keyword != null) {
       return keyword;
     } else if (_type != null) {
       return _type.beginToken;
     }
     return identifier.beginToken;
   }
+
   Token get endToken => identifier.endToken;
 
   /**
    * Return the name of the declared type of the parameter, or `null` if the parameter does
    * not have a declared type.
    *
    * @return the name of the declared type of the parameter
    */
   TypeName get type => _type;
-  bool get isConst => (keyword is KeywordToken) && identical(((keyword as KeywordToken)).keyword, Keyword.CONST);
-  bool get isFinal => (keyword is KeywordToken) && identical(((keyword as KeywordToken)).keyword, Keyword.FINAL);
+
+  bool get isConst => (keyword is KeywordToken) && identical((keyword as KeywordToken).keyword, Keyword.CONST);
+
+  bool get isFinal => (keyword is KeywordToken) && identical((keyword as KeywordToken).keyword, Keyword.FINAL);
 
   /**
    * Set the name of the declared type of the parameter to the given type name.
    *
    * @param typeName the name of the declared type of the parameter
    */
   void set type(TypeName typeName) {
     _type = becomeParentOf(typeName);
   }
+
   void visitChildren(ASTVisitor visitor) {
     super.visitChildren(visitor);
     safelyVisitChild(_type, visitor);
     safelyVisitChild(identifier, visitor);
   }
 }
+
 /**
  * Instances of the class `SimpleIdentifier` represent a simple identifier.
  *
  * <pre>
  * simpleIdentifier ::=
  *     initialCharacter internalCharacter*
  *
  * initialCharacter ::= '_' | '$' | letter
  *
  * internalCharacter ::= '_' | '$' | letter | digit
  * </pre>
  *
  * @coverage dart.engine.ast
  */
 class SimpleIdentifier extends Identifier {
-
   /**
    * The token representing the identifier.
    */
   Token token;
 
   /**
    * The element associated with this identifier based on static type information, or `null`
    * if the AST structure has not been resolved or if this identifier could not be resolved.
    */
   Element _staticElement;
@@ skipping 20 matching lines @@
   SimpleIdentifier.full(Token token) {
     this.token = token;
   }
 
   /**
    * Initialize a newly created identifier.
    *
    * @param token the token representing the identifier
    */
   SimpleIdentifier({Token token}) : this.full(token);
+
   accept(ASTVisitor visitor) => visitor.visitSimpleIdentifier(this);
+
   Token get beginToken => token;
+
   Element get bestElement {
     if (_propagatedElement == null) {
       return _staticElement;
     }
     return _propagatedElement;
   }
+
   Token get endToken => token;
+
   String get name => token.lexeme;
+
   Element get propagatedElement => _propagatedElement;
+
   Element get staticElement => _staticElement;
 
   /**
    * Return `true` if this identifier is the name being declared in a declaration.
    *
    * @return `true` if this identifier is the name being declared in a declaration
    */
   bool inDeclarationContext() {
     ASTNode parent = this.parent;
     if (parent is CatchClause) {
       CatchClause clause = parent as CatchClause;
       return identical(this, clause.exceptionParameter) || identical(this, clause.stackTraceParameter);
     } else if (parent is ClassDeclaration) {
-      return identical(this, ((parent as ClassDeclaration)).name);
+      return identical(this, (parent as ClassDeclaration).name);
     } else if (parent is ClassTypeAlias) {
-      return identical(this, ((parent as ClassTypeAlias)).name);
+      return identical(this, (parent as ClassTypeAlias).name);
     } else if (parent is ConstructorDeclaration) {
-      return identical(this, ((parent as ConstructorDeclaration)).name);
+      return identical(this, (parent as ConstructorDeclaration).name);
     } else if (parent is DeclaredIdentifier) {
-      return identical(this, ((parent as DeclaredIdentifier)).identifier);
+      return identical(this, (parent as DeclaredIdentifier).identifier);
     } else if (parent is FunctionDeclaration) {
-      return identical(this, ((parent as FunctionDeclaration)).name);
+      return identical(this, (parent as FunctionDeclaration).name);
     } else if (parent is FunctionTypeAlias) {
-      return identical(this, ((parent as FunctionTypeAlias)).name);
+      return identical(this, (parent as FunctionTypeAlias).name);
     } else if (parent is Label) {
-      return identical(this, ((parent as Label)).label) && (parent.parent is LabeledStatement);
+      return identical(this, (parent as Label).label) && (parent.parent is LabeledStatement);
     } else if (parent is MethodDeclaration) {
-      return identical(this, ((parent as MethodDeclaration)).name);
+      return identical(this, (parent as MethodDeclaration).name);
     } else if (parent is FunctionTypedFormalParameter || parent is SimpleFormalParameter) {
-      return identical(this, ((parent as NormalFormalParameter)).identifier);
+      return identical(this, (parent as NormalFormalParameter).identifier);
     } else if (parent is TypeParameter) {
-      return identical(this, ((parent as TypeParameter)).name);
+      return identical(this, (parent as TypeParameter).name);
     } else if (parent is VariableDeclaration) {
-      return identical(this, ((parent as VariableDeclaration)).name);
+      return identical(this, (parent as VariableDeclaration).name);
     }
     return false;
   }
 
   /**
    * Return `true` if this expression is computing a right-hand value.
    *
    * Note that [inGetterContext] and [inSetterContext] are not opposites, nor are
    * they mutually exclusive. In other words, it is possible for both methods to return `true`
    * when invoked on the same node.
@@ skipping 51 matching lines @@
       target = prefixed;
     } else if (parent is PropertyAccess) {
       PropertyAccess access = parent as PropertyAccess;
       if (identical(access.target, this)) {
         return false;
       }
       parent = access.parent;
       target = access;
     }
     if (parent is PrefixExpression) {
-      return ((parent as PrefixExpression)).operator.type.isIncrementOperator;
+      return (parent as PrefixExpression).operator.type.isIncrementOperator;
     } else if (parent is PostfixExpression) {
       return true;
     } else if (parent is AssignmentExpression) {
-      return identical(((parent as AssignmentExpression)).leftHandSide, target);
+      return identical((parent as AssignmentExpression).leftHandSide, target);
     }
     return false;
   }
+
   bool get isSynthetic => token.isSynthetic;
 
   /**
    * Set the element associated with this identifier based on propagated type information to the
    * given element.
    *
    * @param element the element to be associated with this identifier
    */
   void set propagatedElement(Element element) {
     _propagatedElement = validateElement2(element);
   }
 
   /**
    * Set the element associated with this identifier based on static type information to the given
    * element.
    *
    * @param element the element to be associated with this identifier
    */
   void set staticElement(Element element) {
     _staticElement = validateElement2(element);
   }
+
   void visitChildren(ASTVisitor visitor) {
   }
 
   /**
    * Return the given element if it is an appropriate element based on the parent of this
    * identifier, or `null` if it is not appropriate.
    *
    * @param element the element to be associated with this identifier
    * @return the element to be associated with this identifier
    */
@@ skipping 10 matching lines @@
    * identifier, or `null` if it is not appropriate.
    *
    * @param element the element to be associated with this identifier
    * @return the element to be associated with this identifier
    */
   Element validateElement2(Element element) {
     if (element == null) {
       return null;
     }
     ASTNode parent = this.parent;
-    if (parent is ClassDeclaration && identical(((parent as ClassDeclaration)).name, this)) {
+    if (parent is ClassDeclaration && identical((parent as ClassDeclaration).name, this)) {
       return validateElement(parent, ClassElement, element);
-    } else if (parent is ClassTypeAlias && identical(((parent as ClassTypeAlias)).name, this)) {
+    } else if (parent is ClassTypeAlias && identical((parent as ClassTypeAlias).name, this)) {
       return validateElement(parent, ClassElement, element);
-    } else if (parent is DeclaredIdentifier && identical(((parent as DeclaredIdentifier)).identifier, this)) {
+    } else if (parent is DeclaredIdentifier && identical((parent as DeclaredIdentifier).identifier, this)) {
       return validateElement(parent, LocalVariableElement, element);
-    } else if (parent is FormalParameter && identical(((parent as FormalParameter)).identifier, this)) {
+    } else if (parent is FormalParameter && identical((parent as FormalParameter).identifier, this)) {
       return validateElement(parent, ParameterElement, element);
-    } else if (parent is FunctionDeclaration && identical(((parent as FunctionDeclaration)).name, this)) {
+    } else if (parent is FunctionDeclaration && identical((parent as FunctionDeclaration).name, this)) {
       return validateElement(parent, ExecutableElement, element);
-    } else if (parent is FunctionTypeAlias && identical(((parent as FunctionTypeAlias)).name, this)) {
+    } else if (parent is FunctionTypeAlias && identical((parent as FunctionTypeAlias).name, this)) {
       return validateElement(parent, FunctionTypeAliasElement, element);
-    } else if (parent is MethodDeclaration && identical(((parent as MethodDeclaration)).name, this)) {
+    } else if (parent is MethodDeclaration && identical((parent as MethodDeclaration).name, this)) {
       return validateElement(parent, ExecutableElement, element);
-    } else if (parent is TypeParameter && identical(((parent as TypeParameter)).name, this)) {
+    } else if (parent is TypeParameter && identical((parent as TypeParameter).name, this)) {
       return validateElement(parent, TypeParameterElement, element);
-    } else if (parent is VariableDeclaration && identical(((parent as VariableDeclaration)).name, this)) {
+    } else if (parent is VariableDeclaration && identical((parent as VariableDeclaration).name, this)) {
       return validateElement(parent, VariableElement, element);
     }
     return element;
   }
 }
+
 /**
  * Instances of the class `SimpleStringLiteral` represent a string literal expression that
  * does not contain any interpolations.
  *
  * <pre>
  * simpleStringLiteral ::=
  *     rawStringLiteral
  *   | basicStringLiteral
  *
  * rawStringLiteral ::=
  *     '@' basicStringLiteral
  *
  * simpleStringLiteral ::=
  *     multiLineStringLiteral
  *   | singleLineStringLiteral
  *
  * multiLineStringLiteral ::=
  *     "'''" characters "'''"
  *   | '"""' characters '"""'
  *
  * singleLineStringLiteral ::=
  *     "'" characters "'"
  *     '"' characters '"'
  * </pre>
  *
  * @coverage dart.engine.ast
  */
 class SimpleStringLiteral extends StringLiteral {
-
   /**
    * The token representing the literal.
    */
   Token literal;
 
   /**
    * The value of the literal.
    */
   String _value;
 
   /**
    * Initialize a newly created simple string literal.
    *
    * @param literal the token representing the literal
    * @param value the value of the literal
    */
   SimpleStringLiteral.full(Token literal, String value) {
     this.literal = literal;
     this._value = StringUtilities.intern(value);
   }
 
   /**
    * Initialize a newly created simple string literal.
    *
    * @param literal the token representing the literal
    * @param value the value of the literal
    */
   SimpleStringLiteral({Token literal, String value}) : this.full(literal, value);
+
   accept(ASTVisitor visitor) => visitor.visitSimpleStringLiteral(this);
+
   Token get beginToken => literal;
+
   Token get endToken => literal;
 
   /**
    * Return the value of the literal.
    *
    * @return the value of the literal
    */
   String get value => _value;
 
   /**
    * Return `true` if this string literal is a multi-line string.
    *
    * @return `true` if this string literal is a multi-line string
    */
   bool get isMultiline {
     if (_value.length < 6) {
       return false;
     }
     return _value.endsWith("\"\"\"") || _value.endsWith("'''");
   }
 
   /**
    * Return `true` if this string literal is a raw string.
    *
    * @return `true` if this string literal is a raw string
    */
   bool get isRaw => _value.codeUnitAt(0) == 0x40;
+
   bool get isSynthetic => literal.isSynthetic;
 
   /**
    * Set the value of the literal to the given string.
    *
    * @param string the value of the literal
    */
   void set value(String string) {
     _value = StringUtilities.intern(_value);
   }
+
   void visitChildren(ASTVisitor visitor) {
   }
+
   void appendStringValue(JavaStringBuilder builder) {
     builder.append(value);
   }
 }
+
 /**
  * Instances of the class `Statement` defines the behavior common to nodes that represent a
  * statement.
  *
  * <pre>
  * statement ::=
  *     [Block]
  *   | [VariableDeclarationStatement]
  *   | [ForStatement]
  *   | [ForEachStatement]
  *   | [WhileStatement]
  *   | [DoStatement]
  *   | [SwitchStatement]
  *   | [IfStatement]
  *   | [TryStatement]
  *   | [BreakStatement]
  *   | [ContinueStatement]
  *   | [ReturnStatement]
  *   | [ExpressionStatement]
  *   | [FunctionDeclarationStatement]
  * </pre>
  *
  * @coverage dart.engine.ast
  */
 abstract class Statement extends ASTNode {
 }
+
 /**
  * Instances of the class `StringInterpolation` represent a string interpolation literal.
  *
  * <pre>
  * stringInterpolation ::=
  *     ''' [InterpolationElement]* '''
  *   | '"' [InterpolationElement]* '"'
  * </pre>
  *
  * @coverage dart.engine.ast
  */
 class StringInterpolation extends StringLiteral {
-
   /**
    * The elements that will be composed to produce the resulting string.
    */
   NodeList<InterpolationElement> elements;
 
   /**
    * Initialize a newly created string interpolation expression.
    *
    * @param elements the elements that will be composed to produce the resulting string
    */
   StringInterpolation.full(List<InterpolationElement> elements) {
     this.elements = new NodeList<InterpolationElement>(this);
     this.elements.addAll(elements);
   }
 
   /**
    * Initialize a newly created string interpolation expression.
    *
    * @param elements the elements that will be composed to produce the resulting string
    */
   StringInterpolation({List<InterpolationElement> elements}) : this.full(elements);
+
   accept(ASTVisitor visitor) => visitor.visitStringInterpolation(this);
+
   Token get beginToken => elements.beginToken;
+
   Token get endToken => elements.endToken;
+
   void visitChildren(ASTVisitor visitor) {
     elements.accept(visitor);
   }
+
   void appendStringValue(JavaStringBuilder builder) {
     throw new IllegalArgumentException();
   }
 }
+
 /**
  * Instances of the class `StringLiteral` represent a string literal expression.
  *
  * <pre>
  * stringLiteral ::=
  *     [SimpleStringLiteral]
  *   | [AdjacentStrings]
  *   | [StringInterpolation]
  * </pre>
  *
  * @coverage dart.engine.ast
  */
 abstract class StringLiteral extends Literal {
-
   /**
    * Return the value of the string literal, or `null` if the string is not a constant string
    * without any string interpolation.
    *
    * @return the value of the string literal
    */
   String get stringValue {
     JavaStringBuilder builder = new JavaStringBuilder();
     try {
       appendStringValue(builder);
     } on IllegalArgumentException catch (exception) {
       return null;
     }
     return builder.toString();
   }
 
   /**
    * Append the value of the given string literal to the given string builder.
    *
    * @param builder the builder to which the string's value is to be appended
    * @throws IllegalArgumentException if the string is not a constant string without any string
    *           interpolation
    */
   void appendStringValue(JavaStringBuilder builder);
 }
+
 /**
  * Instances of the class `SuperConstructorInvocation` represent the invocation of a
  * superclass' constructor from within a constructor's initialization list.
  *
  * <pre>
  * superInvocation ::=
  *     'super' ('.' [SimpleIdentifier])? [ArgumentList]
  * </pre>
  *
  * @coverage dart.engine.ast
  */
 class SuperConstructorInvocation extends ConstructorInitializer {
-
   /**
    * The token for the 'super' keyword.
    */
   Token keyword;
 
   /**
    * The token for the period before the name of the constructor that is being invoked, or
    * `null` if the unnamed constructor is being invoked.
    */
   Token period;
@@ skipping 34 matching lines @@
   /**
    * Initialize a newly created super invocation to invoke the inherited constructor with the given
    * name with the given arguments.
    *
    * @param keyword the token for the 'super' keyword
    * @param period the token for the period before the name of the constructor that is being invoked
    * @param constructorName the name of the constructor that is being invoked
    * @param argumentList the list of arguments to the constructor
    */
   SuperConstructorInvocation({Token keyword, Token period, SimpleIdentifier constructorName, ArgumentList argumentList}) : this.full(keyword, period, constructorName, argumentList);
+
   accept(ASTVisitor visitor) => visitor.visitSuperConstructorInvocation(this);
 
   /**
    * Return the list of arguments to the constructor.
    *
    * @return the list of arguments to the constructor
    */
   ArgumentList get argumentList => _argumentList;
+
   Token get beginToken => keyword;
 
   /**
    * Return the name of the constructor that is being invoked, or `null` if the unnamed
    * constructor is being invoked.
    *
    * @return the name of the constructor that is being invoked
    */
   SimpleIdentifier get constructorName => _constructorName;
+
   Token get endToken => _argumentList.endToken;
 
   /**
    * Set the list of arguments to the constructor to the given list.
    *
    * @param argumentList the list of arguments to the constructor
    */
   void set argumentList(ArgumentList argumentList) {
     this._argumentList = becomeParentOf(argumentList);
   }
 
   /**
    * Set the name of the constructor that is being invoked to the given identifier.
    *
    * @param identifier the name of the constructor that is being invoked
    */
   void set constructorName(SimpleIdentifier identifier) {
     _constructorName = becomeParentOf(identifier);
   }
+
   void visitChildren(ASTVisitor visitor) {
     safelyVisitChild(_constructorName, visitor);
     safelyVisitChild(_argumentList, visitor);
   }
 }
+
 /**
  * Instances of the class `SuperExpression` represent a super expression.
  *
  * <pre>
  * superExpression ::=
  *     'super'
  * </pre>
  *
  * @coverage dart.engine.ast
  */
 class SuperExpression extends Expression {
-
   /**
    * The token representing the keyword.
    */
   Token keyword;
 
   /**
    * Initialize a newly created super expression.
    *
    * @param keyword the token representing the keyword
    */
   SuperExpression.full(Token keyword) {
     this.keyword = keyword;
   }
 
   /**
    * Initialize a newly created super expression.
    *
    * @param keyword the token representing the keyword
    */
   SuperExpression({Token keyword}) : this.full(keyword);
+
   accept(ASTVisitor visitor) => visitor.visitSuperExpression(this);
+
   Token get beginToken => keyword;
+
   Token get endToken => keyword;
+
   void visitChildren(ASTVisitor visitor) {
   }
 }
+
 /**
  * Instances of the class `SwitchCase` represent the case in a switch statement.
  *
  * <pre>
  * switchCase ::=
  *     [SimpleIdentifier]* 'case' [Expression] ':' [Statement]*
  * </pre>
  *
  * @coverage dart.engine.ast
  */
 class SwitchCase extends SwitchMember {
-
   /**
    * The expression controlling whether the statements will be executed.
    */
   Expression _expression;
 
   /**
    * Initialize a newly created switch case.
    *
    * @param labels the labels associated with the switch member
    * @param keyword the token representing the 'case' or 'default' keyword
    * @param expression the expression controlling whether the statements will be executed
    * @param colon the colon separating the keyword or the expression from the statements
    * @param statements the statements that will be executed if this switch member is selected
    */
   SwitchCase.full(List<Label> labels, Token keyword, Expression expression, Token colon, List<Statement> statements) : super.full(labels, keyword, colon, statements) {
     this._expression = becomeParentOf(expression);
   }
 
   /**
    * Initialize a newly created switch case.
    *
    * @param labels the labels associated with the switch member
    * @param keyword the token representing the 'case' or 'default' keyword
    * @param expression the expression controlling whether the statements will be executed
    * @param colon the colon separating the keyword or the expression from the statements
    * @param statements the statements that will be executed if this switch member is selected
    */
   SwitchCase({List<Label> labels, Token keyword, Expression expression, Token colon, List<Statement> statements}) : this.full(labels, keyword, expression, colon, statements);
+
   accept(ASTVisitor visitor) => visitor.visitSwitchCase(this);
 
   /**
    * Return the expression controlling whether the statements will be executed.
    *
    * @return the expression controlling whether the statements will be executed
    */
   Expression get expression => _expression;
 
   /**
    * Set the expression controlling whether the statements will be executed to the given expression.
    *
    * @param expression the expression controlling whether the statements will be executed
    */
   void set expression(Expression expression) {
     this._expression = becomeParentOf(expression);
   }
+
   void visitChildren(ASTVisitor visitor) {
     labels.accept(visitor);
     safelyVisitChild(_expression, visitor);
     statements.accept(visitor);
   }
 }
+
 /**
  * Instances of the class `SwitchDefault` represent the default case in a switch statement.
  *
  * <pre>
  * switchDefault ::=
  *     [SimpleIdentifier]* 'default' ':' [Statement]*
  * </pre>
  *
  * @coverage dart.engine.ast
  */
 class SwitchDefault extends SwitchMember {
-
   /**
    * Initialize a newly created switch default.
    *
    * @param labels the labels associated with the switch member
    * @param keyword the token representing the 'case' or 'default' keyword
    * @param colon the colon separating the keyword or the expression from the statements
    * @param statements the statements that will be executed if this switch member is selected
    */
   SwitchDefault.full(List<Label> labels, Token keyword, Token colon, List<Statement> statements) : super.full(labels, keyword, colon, statements);
 
   /**
    * Initialize a newly created switch default.
    *
    * @param labels the labels associated with the switch member
    * @param keyword the token representing the 'case' or 'default' keyword
    * @param colon the colon separating the keyword or the expression from the statements
    * @param statements the statements that will be executed if this switch member is selected
    */
   SwitchDefault({List<Label> labels, Token keyword, Token colon, List<Statement> statements}) : this.full(labels, keyword, colon, statements);
+
   accept(ASTVisitor visitor) => visitor.visitSwitchDefault(this);
+
   void visitChildren(ASTVisitor visitor) {
     labels.accept(visitor);
     statements.accept(visitor);
   }
 }
+
 /**
  * The abstract class `SwitchMember` defines the behavior common to objects representing
  * elements within a switch statement.
  *
  * <pre>
  * switchMember ::=
  *     switchCase
  *   | switchDefault
  * </pre>
  *
  * @coverage dart.engine.ast
  */
 abstract class SwitchMember extends ASTNode {
-
   /**
    * The labels associated with the switch member.
    */
   NodeList<Label> labels;
 
   /**
    * The token representing the 'case' or 'default' keyword.
    */
   Token keyword;
 
@@ skipping 26 matching lines @@
 
   /**
    * Initialize a newly created switch member.
    *
    * @param labels the labels associated with the switch member
    * @param keyword the token representing the 'case' or 'default' keyword
    * @param colon the colon separating the keyword or the expression from the statements
    * @param statements the statements that will be executed if this switch member is selected
    */
   SwitchMember({List<Label> labels, Token keyword, Token colon, List<Statement> statements}) : this.full(labels, keyword, colon, statements);
+
   Token get beginToken {
     if (!labels.isEmpty) {
       return labels.beginToken;
     }
     return keyword;
   }
+
   Token get endToken {
     if (!statements.isEmpty) {
       return statements.endToken;
     }
     return colon;
   }
 }
+
 /**
  * Instances of the class `SwitchStatement` represent a switch statement.
  *
  * <pre>
  * switchStatement ::=
  *     'switch' '(' [Expression] ')' '{' [SwitchCase]* [SwitchDefault]? '}'
  * </pre>
  *
  * @coverage dart.engine.ast
  */
 class SwitchStatement extends Statement {
-
   /**
    * The token representing the 'switch' keyword.
    */
   Token keyword;
 
   /**
    * The left parenthesis.
    */
   Token leftParenthesis;
 
@@ skipping 49 matching lines @@
    *
    * @param keyword the token representing the 'switch' keyword
    * @param leftParenthesis the left parenthesis
    * @param expression the expression used to determine which of the switch members will be selected
    * @param rightParenthesis the right parenthesis
    * @param leftBracket the left curly bracket
    * @param members the switch members that can be selected by the expression
    * @param rightBracket the right curly bracket
    */
   SwitchStatement({Token keyword, Token leftParenthesis, Expression expression, Token rightParenthesis, Token leftBracket, List<SwitchMember> members, Token rightBracket}) : this.full(keyword, leftParenthesis, expression, rightParenthesis, leftBracket, members, rightBracket);
+
   accept(ASTVisitor visitor) => visitor.visitSwitchStatement(this);
+
   Token get beginToken => keyword;
+
   Token get endToken => rightBracket;
 
   /**
    * Return the expression used to determine which of the switch members will be selected.
    *
    * @return the expression used to determine which of the switch members will be selected
    */
   Expression get expression => _expression;
 
   /**
    * Set the expression used to determine which of the switch members will be selected to the given
    * expression.
    *
    * @param expression the expression used to determine which of the switch members will be selected
    */
   void set expression(Expression expression) {
     this._expression = becomeParentOf(expression);
   }
+
   void visitChildren(ASTVisitor visitor) {
     safelyVisitChild(_expression, visitor);
     members.accept(visitor);
   }
 }
+
 /**
  * Instances of the class `SymbolLiteral` represent a symbol literal expression.
  *
  * <pre>
  * symbolLiteral ::=
  *     '#' (operator | (identifier ('.' identifier)*))
  * </pre>
  *
  * @coverage dart.engine.ast
  */
 class SymbolLiteral extends Literal {
-
   /**
    * The token introducing the literal.
    */
   Token poundSign;
 
   /**
    * The components of the literal.
    */
   List<Token> components;
 
   /**
    * Initialize a newly created symbol literal.
    *
    * @param poundSign the token introducing the literal
    * @param components the components of the literal
    */
   SymbolLiteral.full(Token poundSign, List<Token> components) {
     this.poundSign = poundSign;
     this.components = components;
   }
 
   /**
    * Initialize a newly created symbol literal.
    *
    * @param poundSign the token introducing the literal
    * @param components the components of the literal
    */
   SymbolLiteral({Token poundSign, List<Token> components}) : this.full(poundSign, components);
+
   accept(ASTVisitor visitor) => visitor.visitSymbolLiteral(this);
+
   Token get beginToken => poundSign;
+
   Token get endToken => components[components.length - 1];
+
   void visitChildren(ASTVisitor visitor) {
   }
 }
+
 /**
  * Instances of the class `ThisExpression` represent a this expression.
  *
  * <pre>
  * thisExpression ::=
  *     'this'
  * </pre>
  *
  * @coverage dart.engine.ast
  */
 class ThisExpression extends Expression {
-
   /**
    * The token representing the keyword.
    */
   Token keyword;
 
   /**
    * Initialize a newly created this expression.
    *
    * @param keyword the token representing the keyword
    */
   ThisExpression.full(Token keyword) {
     this.keyword = keyword;
   }
 
   /**
    * Initialize a newly created this expression.
    *
    * @param keyword the token representing the keyword
    */
   ThisExpression({Token keyword}) : this.full(keyword);
+
   accept(ASTVisitor visitor) => visitor.visitThisExpression(this);
+
   Token get beginToken => keyword;
+
   Token get endToken => keyword;
+
   void visitChildren(ASTVisitor visitor) {
   }
 }
+
 /**
  * Instances of the class `ThrowExpression` represent a throw expression.
  *
  * <pre>
  * throwExpression ::=
  *     'throw' [Expression]
  * </pre>
  *
  * @coverage dart.engine.ast
  */
 class ThrowExpression extends Expression {
-
   /**
    * The token representing the 'throw' keyword.
    */
   Token keyword;
 
   /**
    * The expression computing the exception to be thrown.
    */
   Expression _expression;
 
   /**
    * Initialize a newly created throw expression.
    *
    * @param keyword the token representing the 'throw' keyword
    * @param expression the expression computing the exception to be thrown
    */
   ThrowExpression.full(Token keyword, Expression expression) {
     this.keyword = keyword;
     this._expression = becomeParentOf(expression);
   }
 
   /**
    * Initialize a newly created throw expression.
    *
    * @param keyword the token representing the 'throw' keyword
    * @param expression the expression computing the exception to be thrown
    */
   ThrowExpression({Token keyword, Expression expression}) : this.full(keyword, expression);
+
   accept(ASTVisitor visitor) => visitor.visitThrowExpression(this);
+
   Token get beginToken => keyword;
+
   Token get endToken {
     if (_expression != null) {
       return _expression.endToken;
     }
     return keyword;
   }
 
   /**
    * Return the expression computing the exception to be thrown.
    *
    * @return the expression computing the exception to be thrown
    */
   Expression get expression => _expression;
 
   /**
    * Set the expression computing the exception to be thrown to the given expression.
    *
    * @param expression the expression computing the exception to be thrown
    */
   void set expression(Expression expression) {
     this._expression = becomeParentOf(expression);
   }
+
   void visitChildren(ASTVisitor visitor) {
     safelyVisitChild(_expression, visitor);
   }
 }
+
 /**
  * Instances of the class `TopLevelVariableDeclaration` represent the declaration of one or
  * more top-level variables of the same type.
  *
  * <pre>
  * topLevelVariableDeclaration ::=
  *     ('final' | 'const') type? staticFinalDeclarationList ';'
  *   | variableDeclaration ';'
  * </pre>
  *
  * @coverage dart.engine.ast
  */
 class TopLevelVariableDeclaration extends CompilationUnitMember {
-
   /**
    * The top-level variables being declared.
    */
   VariableDeclarationList _variableList;
 
   /**
    * The semicolon terminating the declaration.
    */
   Token semicolon;
 
@@ skipping 12 matching lines @@
 
   /**
    * Initialize a newly created top-level variable declaration.
    *
    * @param comment the documentation comment associated with this variable
    * @param metadata the annotations associated with this variable
    * @param variableList the top-level variables being declared
    * @param semicolon the semicolon terminating the declaration
    */
   TopLevelVariableDeclaration({Comment comment, List<Annotation> metadata, VariableDeclarationList variableList, Token semicolon}) : this.full(comment, metadata, variableList, semicolon);
+
   accept(ASTVisitor visitor) => visitor.visitTopLevelVariableDeclaration(this);
+
   Element get element => null;
+
   Token get endToken => semicolon;
 
   /**
    * Return the top-level variables being declared.
    *
    * @return the top-level variables being declared
    */
   VariableDeclarationList get variables => _variableList;
 
   /**
    * Set the top-level variables being declared to the given list of variables.
    *
    * @param variableList the top-level variables being declared
    */
   void set variables(VariableDeclarationList variableList) {
     variableList = becomeParentOf(variableList);
   }
+
   void visitChildren(ASTVisitor visitor) {
     super.visitChildren(visitor);
     safelyVisitChild(_variableList, visitor);
   }
+
   Token get firstTokenAfterCommentAndMetadata => _variableList.beginToken;
 }
+
 /**
  * Instances of the class `TryStatement` represent a try statement.
  *
  * <pre>
  * tryStatement ::=
  *     'try' [Block] ([CatchClause]+ finallyClause? | finallyClause)
  *
  * finallyClause ::=
  *     'finally' [Block]
  * </pre>
  *
  * @coverage dart.engine.ast
  */
 class TryStatement extends Statement {
-
   /**
    * The token representing the 'try' keyword.
    */
   Token tryKeyword;
 
   /**
    * The body of the statement.
    */
   Block _body;
 
@@ skipping 35 matching lines @@
   /**
    * Initialize a newly created try statement.
    *
    * @param tryKeyword the token representing the 'try' keyword
    * @param body the body of the statement
    * @param catchClauses the catch clauses contained in the try statement
    * @param finallyKeyword the token representing the 'finally' keyword
    * @param finallyBlock the finally block contained in the try statement
    */
   TryStatement({Token tryKeyword, Block body, List<CatchClause> catchClauses, Token finallyKeyword, Block finallyBlock}) : this.full(tryKeyword, body, catchClauses, finallyKeyword, finallyBlock);
+
   accept(ASTVisitor visitor) => visitor.visitTryStatement(this);
+
   Token get beginToken => tryKeyword;
 
   /**
    * Return the body of the statement.
    *
    * @return the body of the statement
    */
   Block get body => _body;
+
   Token get endToken {
     if (_finallyBlock != null) {
       return _finallyBlock.endToken;
     } else if (finallyKeyword != null) {
       return finallyKeyword;
     } else if (!catchClauses.isEmpty) {
       return catchClauses.endToken;
     }
     return _body.endToken;
   }
@@ skipping 16 matching lines @@
   }
 
   /**
    * Set the finally block contained in the try statement to the given block.
    *
    * @param block the finally block contained in the try statement
    */
   void set finallyBlock(Block block) {
     _finallyBlock = becomeParentOf(block);
   }
+
   void visitChildren(ASTVisitor visitor) {
     safelyVisitChild(_body, visitor);
     catchClauses.accept(visitor);
     safelyVisitChild(_finallyBlock, visitor);
   }
 }
+
 /**
  * The abstract class `TypeAlias` defines the behavior common to declarations of type aliases.
  *
  * <pre>
  * typeAlias ::=
  *     'typedef' typeAliasBody
  *
  * typeAliasBody ::=
  *     classTypeAlias
  *   | functionTypeAlias
  * </pre>
  *
  * @coverage dart.engine.ast
  */
 abstract class TypeAlias extends CompilationUnitMember {
-
   /**
    * The token representing the 'typedef' keyword.
    */
   Token keyword;
 
   /**
    * The semicolon terminating the declaration.
    */
   Token semicolon;
 
@@ skipping 12 matching lines @@
 
   /**
    * Initialize a newly created type alias.
    *
    * @param comment the documentation comment associated with this type alias
    * @param metadata the annotations associated with this type alias
    * @param keyword the token representing the 'typedef' keyword
    * @param semicolon the semicolon terminating the declaration
    */
   TypeAlias({Comment comment, List<Annotation> metadata, Token keyword, Token semicolon}) : this.full(comment, metadata, keyword, semicolon);
+
   Token get endToken => semicolon;
+
   Token get firstTokenAfterCommentAndMetadata => keyword;
 }
+
 /**
  * Instances of the class `TypeArgumentList` represent a list of type arguments.
  *
  * <pre>
  * typeArguments ::=
  *     '<' typeName (',' typeName)* '>'
  * </pre>
  *
  * @coverage dart.engine.ast
  */
 class TypeArgumentList extends ASTNode {
-
   /**
    * The left bracket.
    */
   Token leftBracket;
 
   /**
    * The type arguments associated with the type.
    */
   NodeList<TypeName> arguments;
 
@@ skipping 17 matching lines @@
   }
 
   /**
    * Initialize a newly created list of type arguments.
    *
    * @param leftBracket the left bracket
    * @param arguments the type arguments associated with the type
    * @param rightBracket the right bracket
    */
   TypeArgumentList({Token leftBracket, List<TypeName> arguments, Token rightBracket}) : this.full(leftBracket, arguments, rightBracket);
+
   accept(ASTVisitor visitor) => visitor.visitTypeArgumentList(this);
+
   Token get beginToken => leftBracket;
+
   Token get endToken => rightBracket;
+
   void visitChildren(ASTVisitor visitor) {
     arguments.accept(visitor);
   }
 }
+
 /**
  * Instances of the class `TypeName` represent the name of a type, which can optionally
  * include type arguments.
  *
  * <pre>
  * typeName ::=
  *     [Identifier] typeArguments?
  * </pre>
  *
  * @coverage dart.engine.ast
  */
 class TypeName extends ASTNode {
-
   /**
    * The name of the type.
    */
   Identifier _name;
 
   /**
    * The type arguments associated with the type, or `null` if there are no type arguments.
    */
   TypeArgumentList _typeArguments;
 
@@ skipping 15 matching lines @@
   }
 
   /**
    * Initialize a newly created type name.
    *
    * @param name the name of the type
    * @param typeArguments the type arguments associated with the type, or `null` if there are
    *          no type arguments
    */
   TypeName({Identifier name, TypeArgumentList typeArguments}) : this.full(name, typeArguments);
+
   accept(ASTVisitor visitor) => visitor.visitTypeName(this);
+
   Token get beginToken => _name.beginToken;
+
   Token get endToken {
     if (_typeArguments != null) {
       return _typeArguments.endToken;
     }
     return _name.endToken;
   }
 
   /**
    * Return the name of the type.
    *
    * @return the name of the type
    */
   Identifier get name => _name;
 
   /**
    * Return the type arguments associated with the type, or `null` if there are no type
    * arguments.
    *
    * @return the type arguments associated with the type
    */
   TypeArgumentList get typeArguments => _typeArguments;
+
   bool get isSynthetic => _name.isSynthetic && _typeArguments == null;
 
   /**
    * Set the name of the type to the given identifier.
    *
    * @param identifier the name of the type
    */
   void set name(Identifier identifier) {
     _name = becomeParentOf(identifier);
   }
 
   /**
    * Set the type arguments associated with the type to the given type arguments.
    *
    * @param typeArguments the type arguments associated with the type
    */
   void set typeArguments(TypeArgumentList typeArguments) {
     this._typeArguments = becomeParentOf(typeArguments);
   }
+
   void visitChildren(ASTVisitor visitor) {
     safelyVisitChild(_name, visitor);
     safelyVisitChild(_typeArguments, visitor);
   }
 }
+
 /**
  * Instances of the class `TypeParameter` represent a type parameter.
  *
  * <pre>
  * typeParameter ::=
  *     [SimpleIdentifier] ('extends' [TypeName])?
  * </pre>
  *
  * @coverage dart.engine.ast
  */
 class TypeParameter extends Declaration {
-
   /**
    * The name of the type parameter.
    */
   SimpleIdentifier _name;
 
   /**
    * The token representing the 'extends' keyword, or `null` if there was no explicit upper
    * bound.
    */
   Token keyword;
@@ skipping 22 matching lines @@
   /**
    * Initialize a newly created type parameter.
    *
    * @param comment the documentation comment associated with the type parameter
    * @param metadata the annotations associated with the type parameter
    * @param name the name of the type parameter
    * @param keyword the token representing the 'extends' keyword
    * @param bound the name of the upper bound for legal arguments
    */
   TypeParameter({Comment comment, List<Annotation> metadata, SimpleIdentifier name, Token keyword, TypeName bound}) : this.full(comment, metadata, name, keyword, bound);
+
   accept(ASTVisitor visitor) => visitor.visitTypeParameter(this);
 
   /**
    * Return the name of the upper bound for legal arguments, or `null` if there was no
    * explicit upper bound.
    *
    * @return the name of the upper bound for legal arguments
    */
   TypeName get bound => _bound;
+
   TypeParameterElement get element => _name != null ? (_name.staticElement as TypeParameterElement) : null;
+
   Token get endToken {
     if (_bound == null) {
       return _name.endToken;
     }
     return _bound.endToken;
   }
 
   /**
    * Return the name of the type parameter.
    *
@@ skipping 11 matching lines @@
   }
 
   /**
    * Set the name of the type parameter to the given identifier.
    *
    * @param identifier the name of the type parameter
    */
   void set name(SimpleIdentifier identifier) {
     _name = becomeParentOf(identifier);
   }
+
   void visitChildren(ASTVisitor visitor) {
     super.visitChildren(visitor);
     safelyVisitChild(_name, visitor);
     safelyVisitChild(_bound, visitor);
   }
+
   Token get firstTokenAfterCommentAndMetadata => _name.beginToken;
 }
+
 /**
  * Instances of the class `TypeParameterList` represent type parameters within a declaration.
  *
  * <pre>
  * typeParameterList ::=
  *     '<' [TypeParameter] (',' [TypeParameter])* '>'
  * </pre>
  *
  * @coverage dart.engine.ast
  */
 class TypeParameterList extends ASTNode {
-
   /**
    * The left angle bracket.
    */
   Token leftBracket;
 
   /**
    * The type parameters in the list.
    */
   NodeList<TypeParameter> typeParameters;
 
@@ skipping 17 matching lines @@
   }
 
   /**
    * Initialize a newly created list of type parameters.
    *
    * @param leftBracket the left angle bracket
    * @param typeParameters the type parameters in the list
    * @param rightBracket the right angle bracket
    */
   TypeParameterList({Token leftBracket, List<TypeParameter> typeParameters, Token rightBracket}) : this.full(leftBracket, typeParameters, rightBracket);
+
   accept(ASTVisitor visitor) => visitor.visitTypeParameterList(this);
+
   Token get beginToken => leftBracket;
+
   Token get endToken => rightBracket;
+
   void visitChildren(ASTVisitor visitor) {
     typeParameters.accept(visitor);
   }
 }
+
 /**
  * The abstract class `TypedLiteral` defines the behavior common to literals that have a type
  * associated with them.
  *
  * <pre>
  * listLiteral ::=
  *     [ListLiteral]
  *   | [MapLiteral]
  * </pre>
  *
  * @coverage dart.engine.ast
  */
 abstract class TypedLiteral extends Literal {
-
   /**
    * The token representing the 'const' keyword, or `null` if the literal is not a constant.
    */
   Token constKeyword;
 
   /**
    * The type argument associated with this literal, or `null` if no type arguments were
    * declared.
    */
   TypeArgumentList typeArguments;
@@ skipping 11 matching lines @@
   }
 
   /**
    * Initialize a newly created typed literal.
    *
    * @param constKeyword the token representing the 'const' keyword
    * @param typeArguments the type argument associated with this literal, or `null` if no type
    *          arguments were declared
    */
   TypedLiteral({Token constKeyword, TypeArgumentList typeArguments}) : this.full(constKeyword, typeArguments);
+
   void visitChildren(ASTVisitor visitor) {
     safelyVisitChild(typeArguments, visitor);
   }
 }
+
 /**
  * The abstract class `UriBasedDirective` defines the behavior common to nodes that represent
  * a directive that references a URI.
  *
  * <pre>
  * uriBasedDirective ::=
  *     [ExportDirective]
  *   | [ImportDirective]
  *   | [PartDirective]
  * </pre>
  *
  * @coverage dart.engine.ast
  */
 abstract class UriBasedDirective extends Directive {
-
   /**
    * The URI referenced by this directive.
    */
   StringLiteral _uri;
 
   /**
    * Initialize a newly create URI-based directive.
    *
    * @param comment the documentation comment associated with this directive
    * @param metadata the annotations associated with the directive
@@ skipping 29 matching lines @@
   Element get uriElement;
 
   /**
    * Set the URI referenced by this directive to the given URI.
    *
    * @param uri the URI referenced by this directive
    */
   void set uri(StringLiteral uri) {
     this._uri = becomeParentOf(uri);
   }
+
   void visitChildren(ASTVisitor visitor) {
     super.visitChildren(visitor);
     safelyVisitChild(_uri, visitor);
   }
 }
+
 /**
  * Instances of the class `VariableDeclaration` represent an identifier that has an initial
  * value associated with it. Instances of this class are always children of the class
  * [VariableDeclarationList].
  *
  * <pre>
  * variableDeclaration ::=
  *     [SimpleIdentifier] ('=' [Expression])?
  * </pre>
  *
  * @coverage dart.engine.ast
  */
 class VariableDeclaration extends Declaration {
-
   /**
    * The name of the variable being declared.
    */
   SimpleIdentifier _name;
 
   /**
    * The equal sign separating the variable name from the initial value, or `null` if the
    * initial value was not specified.
    */
   Token equals;
@@ skipping 22 matching lines @@
   /**
    * Initialize a newly created variable declaration.
    *
    * @param comment the documentation comment associated with this declaration
    * @param metadata the annotations associated with this member
    * @param name the name of the variable being declared
    * @param equals the equal sign separating the variable name from the initial value
    * @param initializer the expression used to compute the initial value for the variable
    */
   VariableDeclaration({Comment comment, List<Annotation> metadata, SimpleIdentifier name, Token equals, Expression initializer}) : this.full(comment, metadata, name, equals, initializer);
+
   accept(ASTVisitor visitor) => visitor.visitVariableDeclaration(this);
 
   /**
    * This overridden implementation of getDocumentationComment() looks in the grandparent node for
    * dartdoc comments if no documentation is specifically available on the node.
    */
   Comment get documentationComment {
     Comment comment = super.documentationComment;
     if (comment == null) {
       if (parent != null && parent.parent != null) {
         ASTNode node = parent.parent;
         if (node is AnnotatedNode) {
-          return ((node as AnnotatedNode)).documentationComment;
+          return (node as AnnotatedNode).documentationComment;
         }
       }
     }
     return comment;
   }
+
   VariableElement get element => _name != null ? (_name.staticElement as VariableElement) : null;
+
   Token get endToken {
     if (_initializer != null) {
       return _initializer.endToken;
     }
     return _name.endToken;
   }
 
   /**
    * Return the expression used to compute the initial value for the variable, or `null` if
    * the initial value was not specified.
    *
    * @return the expression used to compute the initial value for the variable
    */
   Expression get initializer => _initializer;
 
   /**
    * Return the name of the variable being declared.
    *
    * @return the name of the variable being declared
    */
   SimpleIdentifier get name => _name;
 
   /**
    * Return `true` if this variable was declared with the 'const' modifier.
    *
    * @return `true` if this variable was declared with the 'const' modifier
    */
   bool get isConst {
     ASTNode parent = this.parent;
-    return parent is VariableDeclarationList && ((parent as VariableDeclarationList)).isConst;
+    return parent is VariableDeclarationList && (parent as VariableDeclarationList).isConst;
   }
 
   /**
    * Return `true` if this variable was declared with the 'final' modifier. Variables that are
    * declared with the 'const' modifier will return `false` even though they are implicitly
    * final.
    *
    * @return `true` if this variable was declared with the 'final' modifier
    */
   bool get isFinal {
     ASTNode parent = this.parent;
-    return parent is VariableDeclarationList && ((parent as VariableDeclarationList)).isFinal;
+    return parent is VariableDeclarationList && (parent as VariableDeclarationList).isFinal;
   }
 
   /**
    * Set the expression used to compute the initial value for the variable to the given expression.
    *
    * @param initializer the expression used to compute the initial value for the variable
    */
   void set initializer(Expression initializer) {
     this._initializer = becomeParentOf(initializer);
   }
 
   /**
    * Set the name of the variable being declared to the given identifier.
    *
    * @param name the name of the variable being declared
    */
   void set name(SimpleIdentifier name) {
     this._name = becomeParentOf(name);
   }
+
   void visitChildren(ASTVisitor visitor) {
     super.visitChildren(visitor);
     safelyVisitChild(_name, visitor);
     safelyVisitChild(_initializer, visitor);
   }
+
   Token get firstTokenAfterCommentAndMetadata => _name.beginToken;
 }
+
 /**
  * Instances of the class `VariableDeclarationList` represent the declaration of one or more
  * variables of the same type.
  *
  * <pre>
  * variableDeclarationList ::=
  *     finalConstVarOrType [VariableDeclaration] (',' [VariableDeclaration])*
  *
  * finalConstVarOrType ::=
  *   | 'final' [TypeName]?
  *   | 'const' [TypeName]?
  *   | 'var'
  *   | [TypeName]
  * </pre>
  *
  * @coverage dart.engine.ast
  */
 class VariableDeclarationList extends AnnotatedNode {
-
   /**
    * The token representing the 'final', 'const' or 'var' keyword, or `null` if no keyword was
    * included.
    */
   Token keyword;
 
   /**
    * The type of the variables being declared, or `null` if no type was provided.
    */
   TypeName _type;
@@ skipping 22 matching lines @@
   /**
    * Initialize a newly created variable declaration list.
    *
    * @param comment the documentation comment associated with this declaration list
    * @param metadata the annotations associated with this declaration list
    * @param keyword the token representing the 'final', 'const' or 'var' keyword
    * @param type the type of the variables being declared
    * @param variables a list containing the individual variables being declared
    */
   VariableDeclarationList({Comment comment, List<Annotation> metadata, Token keyword, TypeName type, List<VariableDeclaration> variables}) : this.full(comment, metadata, keyword, type, variables);
+
   accept(ASTVisitor visitor) => visitor.visitVariableDeclarationList(this);
+
   Token get endToken => variables.endToken;
 
   /**
    * Return the type of the variables being declared, or `null` if no type was provided.
    *
    * @return the type of the variables being declared
    */
   TypeName get type => _type;
 
   /**
    * Return `true` if the variables in this list were declared with the 'const' modifier.
    *
    * @return `true` if the variables in this list were declared with the 'const' modifier
    */
-  bool get isConst => keyword is KeywordToken && identical(((keyword as KeywordToken)).keyword, Keyword.CONST);
+  bool get isConst => keyword is KeywordToken && identical((keyword as KeywordToken).keyword, Keyword.CONST);
 
   /**
    * Return `true` if the variables in this list were declared with the 'final' modifier.
    * Variables that are declared with the 'const' modifier will return `false` even though
    * they are implicitly final.
    *
    * @return `true` if the variables in this list were declared with the 'final' modifier
    */
-  bool get isFinal => keyword is KeywordToken && identical(((keyword as KeywordToken)).keyword, Keyword.FINAL);
+  bool get isFinal => keyword is KeywordToken && identical((keyword as KeywordToken).keyword, Keyword.FINAL);
 
   /**
    * Set the type of the variables being declared to the given type name.
    *
    * @param typeName the type of the variables being declared
    */
   void set type(TypeName typeName) {
     _type = becomeParentOf(typeName);
   }
+
   void visitChildren(ASTVisitor visitor) {
     safelyVisitChild(_type, visitor);
     variables.accept(visitor);
   }
+
   Token get firstTokenAfterCommentAndMetadata {
     if (keyword != null) {
       return keyword;
     } else if (_type != null) {
       return _type.beginToken;
     }
     return variables.beginToken;
   }
 }
+
 /**
  * Instances of the class `VariableDeclarationStatement` represent a list of variables that
  * are being declared in a context where a statement is required.
  *
  * <pre>
  * variableDeclarationStatement ::=
  *     [VariableDeclarationList] ';'
  * </pre>
  *
  * @coverage dart.engine.ast
  */
 class VariableDeclarationStatement extends Statement {
-
   /**
    * The variables being declared.
    */
   VariableDeclarationList _variableList;
 
   /**
    * The semicolon terminating the statement.
    */
   Token semicolon;
 
   /**
    * Initialize a newly created variable declaration statement.
    *
    * @param variableList the fields being declared
    * @param semicolon the semicolon terminating the statement
    */
   VariableDeclarationStatement.full(VariableDeclarationList variableList, Token semicolon) {
     this._variableList = becomeParentOf(variableList);
     this.semicolon = semicolon;
   }
 
   /**
    * Initialize a newly created variable declaration statement.
    *
    * @param variableList the fields being declared
    * @param semicolon the semicolon terminating the statement
    */
   VariableDeclarationStatement({VariableDeclarationList variableList, Token semicolon}) : this.full(variableList, semicolon);
+
   accept(ASTVisitor visitor) => visitor.visitVariableDeclarationStatement(this);
+
   Token get beginToken => _variableList.beginToken;
+
   Token get endToken => semicolon;
 
   /**
    * Return the variables being declared.
    *
    * @return the variables being declared
    */
   VariableDeclarationList get variables => _variableList;
 
   /**
    * Set the variables being declared to the given list of variables.
    *
    * @param variableList the variables being declared
    */
   void set variables(VariableDeclarationList variableList) {
     this._variableList = becomeParentOf(variableList);
   }
+
   void visitChildren(ASTVisitor visitor) {
     safelyVisitChild(_variableList, visitor);
   }
 }
+
 /**
  * Instances of the class `WhileStatement` represent a while statement.
  *
  * <pre>
  * whileStatement ::=
  *     'while' '(' [Expression] ')' [Statement]
  * </pre>
  *
  * @coverage dart.engine.ast
  */
 class WhileStatement extends Statement {
-
   /**
    * The token representing the 'while' keyword.
    */
   Token keyword;
 
   /**
    * The left parenthesis.
    */
   Token leftParenthesis;
 
@@ skipping 32 matching lines @@
   /**
    * Initialize a newly created while statement.
    *
    * @param keyword the token representing the 'while' keyword
    * @param leftParenthesis the left parenthesis
    * @param condition the expression used to determine whether to execute the body of the loop
    * @param rightParenthesis the right parenthesis
    * @param body the body of the loop
    */
   WhileStatement({Token keyword, Token leftParenthesis, Expression condition, Token rightParenthesis, Statement body}) : this.full(keyword, leftParenthesis, condition, rightParenthesis, body);
+
   accept(ASTVisitor visitor) => visitor.visitWhileStatement(this);
+
   Token get beginToken => keyword;
 
   /**
    * Return the body of the loop.
    *
    * @return the body of the loop
    */
   Statement get body => _body;
 
   /**
    * Return the expression used to determine whether to execute the body of the loop.
    *
    * @return the expression used to determine whether to execute the body of the loop
    */
   Expression get condition => _condition;
+
   Token get endToken => _body.endToken;
 
   /**
    * Set the body of the loop to the given statement.
    *
    * @param statement the body of the loop
    */
   void set body(Statement statement) {
     _body = becomeParentOf(statement);
   }
 
   /**
    * Set the expression used to determine whether to execute the body of the loop to the given
    * expression.
    *
    * @param expression the expression used to determine whether to execute the body of the loop
    */
   void set condition(Expression expression) {
     _condition = becomeParentOf(expression);
   }
+
   void visitChildren(ASTVisitor visitor) {
     safelyVisitChild(_condition, visitor);
     safelyVisitChild(_body, visitor);
   }
 }
+
 /**
  * Instances of the class `WithClause` represent the with clause in a class declaration.
  *
  * <pre>
  * withClause ::=
  *     'with' [TypeName] (',' [TypeName])*
  * </pre>
  *
  * @coverage dart.engine.ast
  */
 class WithClause extends ASTNode {
-
   /**
    * The token representing the 'with' keyword.
    */
   Token withKeyword;
 
   /**
    * The names of the mixins that were specified.
    */
   NodeList<TypeName> mixinTypes;
 
   /**
    * Initialize a newly created with clause.
    *
    * @param withKeyword the token representing the 'with' keyword
    * @param mixinTypes the names of the mixins that were specified
    */
   WithClause.full(Token withKeyword, List<TypeName> mixinTypes) {
     this.mixinTypes = new NodeList<TypeName>(this);
     this.withKeyword = withKeyword;
     this.mixinTypes.addAll(mixinTypes);
   }
 
   /**
    * Initialize a newly created with clause.
    *
    * @param withKeyword the token representing the 'with' keyword
    * @param mixinTypes the names of the mixins that were specified
    */
   WithClause({Token withKeyword, List<TypeName> mixinTypes}) : this.full(withKeyword, mixinTypes);
+
   accept(ASTVisitor visitor) => visitor.visitWithClause(this);
+
   Token get beginToken => withKeyword;
+
   Token get endToken => mixinTypes.endToken;
 
   /**
    * Set the token representing the 'with' keyword to the given token.
    *
    * @param withKeyword the token representing the 'with' keyword
    */
   void set mixinKeyword(Token withKeyword) {
     this.withKeyword = withKeyword;
   }
+
   void visitChildren(ASTVisitor visitor) {
     mixinTypes.accept(visitor);
   }
 }
+
 /**
  * Instances of the class `BreadthFirstVisitor` implement an AST visitor that will recursively
  * visit all of the nodes in an AST structure, similar to [GeneralizingASTVisitor]. This
  * visitor uses a breadth-first ordering rather than the depth-first ordering of
  * [GeneralizingASTVisitor].
  *
  * Subclasses that override a visit method must either invoke the overridden visit method or
  * explicitly invoke the more general visit method. Failure to do so will cause the visit methods
  * for superclasses of the node to not be invoked and will cause the children of the visited node to
  * not be visited.
  *
  * In addition, subclasses should <b>not</b> explicitly visit the children of a node, but should
  * ensure that the method [visitNode] is used to visit the children (either directly
  * or indirectly). Failure to do will break the order in which nodes are visited.
  *
  * @coverage dart.engine.ast
  */
 class BreadthFirstVisitor<R> extends GeneralizingASTVisitor<R> {
-
   /**
    * A queue holding the nodes that have not yet been visited in the order in which they ought to be
    * visited.
    */
   Queue<ASTNode> _queue = new Queue<ASTNode>();
 
   /**
    * A visitor, used to visit the children of the current node, that will add the nodes it visits to
    * the [queue].
    */
   GeneralizingASTVisitor<Object> _childVisitor;
 
   /**
    * Visit all nodes in the tree starting at the given `root` node, in breadth-first order.
    *
    * @param root the root of the AST structure to be visited
    */
   void visitAllNodes(ASTNode root) {
     _queue.add(root);
     while (!_queue.isEmpty) {
       ASTNode next = _queue.removeFirst();
       next.accept(this);
     }
   }
+
   R visitNode(ASTNode node) {
     node.visitChildren(_childVisitor);
     return null;
   }
+
   BreadthFirstVisitor() {
     this._childVisitor = new GeneralizingASTVisitor_2(this);
   }
 }
+
 class GeneralizingASTVisitor_2 extends GeneralizingASTVisitor<Object> {
   final BreadthFirstVisitor BreadthFirstVisitor_this;
+
   GeneralizingASTVisitor_2(this.BreadthFirstVisitor_this) : super();
+
   Object visitNode(ASTNode node) {
     BreadthFirstVisitor_this._queue.add(node);
     return null;
   }
 }
+
 /**
  * Instances of the class `ConstantEvaluator` evaluate constant expressions to produce their
  * compile-time value. According to the Dart Language Specification: <blockquote> A constant
  * expression is one of the following:
  *
  * * A literal number.
  * * A literal boolean.
  * * A literal string where any interpolated expression is a compile-time constant that evaluates
  * to a numeric, string or boolean value or to `null`.
  * * `null`.
@@ skipping 22 matching lines @@
  * instances of the classes `Boolean`, `BigInteger`, `Double`, `String`, and
  * `DartObject`.
  *
  * In addition, this class defines several values that can be returned to indicate various
  * conditions encountered during evaluation. These are documented with the static field that define
  * those values.
  *
  * @coverage dart.engine.ast
  */
 class ConstantEvaluator extends GeneralizingASTVisitor<Object> {
-
   /**
    * The value returned for expressions (or non-expression nodes) that are not compile-time constant
    * expressions.
    */
   static Object NOT_A_CONSTANT = new Object();
+
   Object visitAdjacentStrings(AdjacentStrings node) {
     JavaStringBuilder builder = new JavaStringBuilder();
     for (StringLiteral string in node.strings) {
       Object value = string.accept(this);
       if (identical(value, NOT_A_CONSTANT)) {
         return value;
       }
       builder.append(value);
     }
     return builder.toString();
   }
+
   Object visitBinaryExpression(BinaryExpression node) {
     Object leftOperand = node.leftOperand.accept(this);
     if (identical(leftOperand, NOT_A_CONSTANT)) {
       return leftOperand;
     }
     Object rightOperand = node.rightOperand.accept(this);
     if (identical(rightOperand, NOT_A_CONSTANT)) {
       return rightOperand;
     }
     while (true) {
       if (node.operator.type == TokenType.AMPERSAND) {
         if (leftOperand is int && rightOperand is int) {
-          return ((leftOperand as int)) & (rightOperand as int);
+          return (leftOperand as int) & (rightOperand as int);
         }
       } else if (node.operator.type == TokenType.AMPERSAND_AMPERSAND) {
         if (leftOperand is bool && rightOperand is bool) {
-          return ((leftOperand as bool)) && ((rightOperand as bool));
+          return (leftOperand as bool) && (rightOperand as bool);
         }
       } else if (node.operator.type == TokenType.BANG_EQ) {
         if (leftOperand is bool && rightOperand is bool) {
-          return ((leftOperand as bool)) != ((rightOperand as bool));
+          return (leftOperand as bool) != (rightOperand as bool);
         } else if (leftOperand is int && rightOperand is int) {
-          return ((leftOperand as int)) != rightOperand;
+          return (leftOperand as int) != rightOperand;
         } else if (leftOperand is double && rightOperand is double) {
-          return ((leftOperand as double)) != rightOperand;
+          return (leftOperand as double) != rightOperand;
         } else if (leftOperand is String && rightOperand is String) {
-          return ((leftOperand as String)) != rightOperand;
+          return (leftOperand as String) != rightOperand;
         }
       } else if (node.operator.type == TokenType.BAR) {
         if (leftOperand is int && rightOperand is int) {
-          return ((leftOperand as int)) | (rightOperand as int);
+          return (leftOperand as int) | (rightOperand as int);
         }
       } else if (node.operator.type == TokenType.BAR_BAR) {
         if (leftOperand is bool && rightOperand is bool) {
-          return ((leftOperand as bool)) || ((rightOperand as bool));
+          return (leftOperand as bool) || (rightOperand as bool);
         }
       } else if (node.operator.type == TokenType.CARET) {
         if (leftOperand is int && rightOperand is int) {
-          return ((leftOperand as int)) ^ (rightOperand as int);
+          return (leftOperand as int) ^ (rightOperand as int);
         }
       } else if (node.operator.type == TokenType.EQ_EQ) {
         if (leftOperand is bool && rightOperand is bool) {
           return identical(leftOperand as bool, rightOperand as bool);
         } else if (leftOperand is int && rightOperand is int) {
-          return ((leftOperand as int)) == rightOperand;
+          return (leftOperand as int) == rightOperand;
         } else if (leftOperand is double && rightOperand is double) {
-          return ((leftOperand as double)) == rightOperand;
+          return (leftOperand as double) == rightOperand;
         } else if (leftOperand is String && rightOperand is String) {
-          return ((leftOperand as String)) == rightOperand;
+          return (leftOperand as String) == rightOperand;
         }
       } else if (node.operator.type == TokenType.GT) {
         if (leftOperand is int && rightOperand is int) {
-          return ((leftOperand as int)).compareTo(rightOperand as int) > 0;
+          return (leftOperand as int).compareTo(rightOperand as int) > 0;
         } else if (leftOperand is double && rightOperand is double) {
-          return ((leftOperand as double)).compareTo(rightOperand as double) > 0;
+          return (leftOperand as double).compareTo(rightOperand as double) > 0;
         }
       } else if (node.operator.type == TokenType.GT_EQ) {
         if (leftOperand is int && rightOperand is int) {
-          return ((leftOperand as int)).compareTo(rightOperand as int) >= 0;
+          return (leftOperand as int).compareTo(rightOperand as int) >= 0;
         } else if (leftOperand is double && rightOperand is double) {
-          return ((leftOperand as double)).compareTo(rightOperand as double) >= 0;
+          return (leftOperand as double).compareTo(rightOperand as double) >= 0;
         }
       } else if (node.operator.type == TokenType.GT_GT) {
         if (leftOperand is int && rightOperand is int) {
-          return ((leftOperand as int)) >> ((rightOperand as int));
+          return (leftOperand as int) >> (rightOperand as int);
         }
       } else if (node.operator.type == TokenType.LT) {
         if (leftOperand is int && rightOperand is int) {
-          return ((leftOperand as int)).compareTo(rightOperand as int) < 0;
+          return (leftOperand as int).compareTo(rightOperand as int) < 0;
         } else if (leftOperand is double && rightOperand is double) {
-          return ((leftOperand as double)).compareTo(rightOperand as double) < 0;
+          return (leftOperand as double).compareTo(rightOperand as double) < 0;
         }
       } else if (node.operator.type == TokenType.LT_EQ) {
         if (leftOperand is int && rightOperand is int) {
-          return ((leftOperand as int)).compareTo(rightOperand as int) <= 0;
+          return (leftOperand as int).compareTo(rightOperand as int) <= 0;
         } else if (leftOperand is double && rightOperand is double) {
-          return ((leftOperand as double)).compareTo(rightOperand as double) <= 0;
+          return (leftOperand as double).compareTo(rightOperand as double) <= 0;
         }
       } else if (node.operator.type == TokenType.LT_LT) {
         if (leftOperand is int && rightOperand is int) {
-          return ((leftOperand as int)) << ((rightOperand as int));
+          return (leftOperand as int) << (rightOperand as int);
         }
       } else if (node.operator.type == TokenType.MINUS) {
         if (leftOperand is int && rightOperand is int) {
-          return ((leftOperand as int)) - (rightOperand as int);
+          return (leftOperand as int) - (rightOperand as int);
         } else if (leftOperand is double && rightOperand is double) {
-          return ((leftOperand as double)) - ((rightOperand as double));
+          return (leftOperand as double) - (rightOperand as double);
         }
       } else if (node.operator.type == TokenType.PERCENT) {
         if (leftOperand is int && rightOperand is int) {
-          return ((leftOperand as int)).remainder(rightOperand as int);
+          return (leftOperand as int).remainder(rightOperand as int);
         } else if (leftOperand is double && rightOperand is double) {
-          return ((leftOperand as double)) % ((rightOperand as double));
+          return (leftOperand as double) % (rightOperand as double);
         }
       } else if (node.operator.type == TokenType.PLUS) {
         if (leftOperand is int && rightOperand is int) {
-          return ((leftOperand as int)) + (rightOperand as int);
+          return (leftOperand as int) + (rightOperand as int);
         } else if (leftOperand is double && rightOperand is double) {
-          return ((leftOperand as double)) + ((rightOperand as double));
+          return (leftOperand as double) + (rightOperand as double);
         }
       } else if (node.operator.type == TokenType.STAR) {
         if (leftOperand is int && rightOperand is int) {
-          return ((leftOperand as int)) * (rightOperand as int);
+          return (leftOperand as int) * (rightOperand as int);
         } else if (leftOperand is double && rightOperand is double) {
-          return ((leftOperand as double)) * ((rightOperand as double));
+          return (leftOperand as double) * (rightOperand as double);
         }
       } else if (node.operator.type == TokenType.SLASH) {
         if (leftOperand is int && rightOperand is int) {
           if (rightOperand != 0) {
-            return ((leftOperand as int)) ~/ (rightOperand as int);
+            return (leftOperand as int) ~/ (rightOperand as int);
           } else {
-            return ((leftOperand as int)).toDouble() / ((rightOperand as int)).toDouble();
+            return (leftOperand as int).toDouble() / (rightOperand as int).toDouble();
           }
         } else if (leftOperand is double && rightOperand is double) {
-          return ((leftOperand as double)) / ((rightOperand as double));
+          return (leftOperand as double) / (rightOperand as double);
         }
       } else if (node.operator.type == TokenType.TILDE_SLASH) {
         if (leftOperand is int && rightOperand is int) {
           if (rightOperand != 0) {
-            return ((leftOperand as int)) ~/ (rightOperand as int);
+            return (leftOperand as int) ~/ (rightOperand as int);
           } else {
             return 0;
           }
         } else if (leftOperand is double && rightOperand is double) {
-          return ((leftOperand as double)) ~/ ((rightOperand as double));
+          return (leftOperand as double) ~/ (rightOperand as double);
         }
       }
       break;
     }
     return visitExpression(node);
   }
+
   Object visitBooleanLiteral(BooleanLiteral node) => node.value ? true : false;
+
   Object visitDoubleLiteral(DoubleLiteral node) => node.value;
+
   Object visitIntegerLiteral(IntegerLiteral node) => node.value;
+
   Object visitInterpolationExpression(InterpolationExpression node) {
     Object value = node.expression.accept(this);
     if (value == null || value is bool || value is String || value is int || value is double) {
       return value;
     }
     return NOT_A_CONSTANT;
   }
+
   Object visitInterpolationString(InterpolationString node) => node.value;
+
   Object visitListLiteral(ListLiteral node) {
     List<Object> list = new List<Object>();
     for (Expression element in node.elements) {
       Object value = element.accept(this);
       if (identical(value, NOT_A_CONSTANT)) {
         return value;
       }
       list.add(value);
     }
     return list;
   }
+
   Object visitMapLiteral(MapLiteral node) {
     Map<String, Object> map = new Map<String, Object>();
     for (MapLiteralEntry entry in node.entries) {
       Object key = entry.key.accept(this);
       Object value = entry.value.accept(this);
       if (key is! String || identical(value, NOT_A_CONSTANT)) {
         return NOT_A_CONSTANT;
       }
       map[(key as String)] = value;
     }
     return map;
   }
+
   Object visitMethodInvocation(MethodInvocation node) => visitNode(node);
+
   Object visitNode(ASTNode node) => NOT_A_CONSTANT;
+
   Object visitNullLiteral(NullLiteral node) => null;
+
   Object visitParenthesizedExpression(ParenthesizedExpression node) => node.expression.accept(this);
+
   Object visitPrefixedIdentifier(PrefixedIdentifier node) => getConstantValue(null);
+
   Object visitPrefixExpression(PrefixExpression node) {
     Object operand = node.operand.accept(this);
     if (identical(operand, NOT_A_CONSTANT)) {
       return operand;
     }
     while (true) {
       if (node.operator.type == TokenType.BANG) {
         if (identical(operand, true)) {
           return false;
         } else if (identical(operand, false)) {
           return true;
         }
       } else if (node.operator.type == TokenType.TILDE) {
         if (operand is int) {
-          return ~((operand as int));
+          return ~(operand as int);
         }
       } else if (node.operator.type == TokenType.MINUS) {
         if (operand == null) {
           return null;
         } else if (operand is int) {
-          return -((operand as int));
+          return -(operand as int);
         } else if (operand is double) {
-          return -((operand as double));
+          return -(operand as double);
         }
       }
       break;
     }
     return NOT_A_CONSTANT;
   }
+
   Object visitPropertyAccess(PropertyAccess node) => getConstantValue(null);
+
   Object visitSimpleIdentifier(SimpleIdentifier node) => getConstantValue(null);
+
   Object visitSimpleStringLiteral(SimpleStringLiteral node) => node.value;
+
   Object visitStringInterpolation(StringInterpolation node) {
     JavaStringBuilder builder = new JavaStringBuilder();
     for (InterpolationElement element in node.elements) {
       Object value = element.accept(this);
       if (identical(value, NOT_A_CONSTANT)) {
         return value;
       }
       builder.append(value);
     }
     return builder.toString();
   }
+
   Object visitSymbolLiteral(SymbolLiteral node) {
     JavaStringBuilder builder = new JavaStringBuilder();
     for (Token component in node.components) {
       if (builder.length > 0) {
         builder.appendChar(0x2E);
       }
       builder.append(component.lexeme);
     }
     return builder.toString();
   }
 
   /**
    * Return the constant value of the static constant represented by the given element.
    *
    * @param element the element whose value is to be returned
    * @return the constant value of the static constant
    */
   Object getConstantValue(Element element) {
     if (element is FieldElement) {
       FieldElement field = element as FieldElement;
       if (field.isStatic && field.isConst) {
       }
     }
     return NOT_A_CONSTANT;
   }
 }
+
 /**
  * Instances of the class `ElementLocator` locate the [Element]
  * associated with a given [ASTNode].
  *
  * @coverage dart.engine.ast
  */
 class ElementLocator {
-
   /**
    * Locate the [Element] associated with the given [ASTNode].
    *
    * @param node the node (not `null`)
    * @return the associated element, or `null` if none is found
    */
   static Element locate(ASTNode node) {
     ElementLocator_ElementMapper mapper = new ElementLocator_ElementMapper();
     return node.accept(mapper);
   }
 }
+
 /**
  * Visitor that maps nodes to elements.
  */
 class ElementLocator_ElementMapper extends GeneralizingASTVisitor<Element> {
   Element visitAssignmentExpression(AssignmentExpression node) => node.bestElement;
+
   Element visitBinaryExpression(BinaryExpression node) => node.bestElement;
+
   Element visitClassDeclaration(ClassDeclaration node) => node.element;
+
   Element visitCompilationUnit(CompilationUnit node) => node.element;
+
   Element visitConstructorDeclaration(ConstructorDeclaration node) => node.element;
+
   Element visitFunctionDeclaration(FunctionDeclaration node) => node.element;
+
   Element visitIdentifier(Identifier node) {
     ASTNode parent = node.parent;
     if (parent is ConstructorDeclaration) {
       ConstructorDeclaration decl = parent as ConstructorDeclaration;
       Identifier returnType = decl.returnType;
       if (identical(returnType, node)) {
         SimpleIdentifier name = decl.name;
         if (name != null) {
           return name.bestElement;
         }
         Element element = node.bestElement;
         if (element is ClassElement) {
-          return ((element as ClassElement)).unnamedConstructor;
+          return (element as ClassElement).unnamedConstructor;
         }
       }
     }
     if (parent is LibraryIdentifier) {
-      ASTNode grandParent = ((parent as LibraryIdentifier)).parent;
+      ASTNode grandParent = (parent as LibraryIdentifier).parent;
       if (grandParent is PartOfDirective) {
-        Element element = ((grandParent as PartOfDirective)).element;
+        Element element = (grandParent as PartOfDirective).element;
         if (element is LibraryElement) {
-          return ((element as LibraryElement)).definingCompilationUnit;
+          return (element as LibraryElement).definingCompilationUnit;
         }
       }
     }
     Element element = node.bestElement;
     if (element == null) {
       element = node.staticElement;
     }
     return element;
   }
+
   Element visitImportDirective(ImportDirective node) => node.element;
+
   Element visitIndexExpression(IndexExpression node) => node.bestElement;
+
   Element visitInstanceCreationExpression(InstanceCreationExpression node) => node.staticElement;
+
   Element visitLibraryDirective(LibraryDirective node) => node.element;
+
   Element visitMethodDeclaration(MethodDeclaration node) => node.element;
+
   Element visitMethodInvocation(MethodInvocation node) => node.methodName.bestElement;
+
   Element visitPostfixExpression(PostfixExpression node) => node.bestElement;
+
   Element visitPrefixedIdentifier(PrefixedIdentifier node) => node.bestElement;
+
   Element visitPrefixExpression(PrefixExpression node) => node.bestElement;
+
   Element visitStringLiteral(StringLiteral node) {
     ASTNode parent = node.parent;
     if (parent is UriBasedDirective) {
-      return ((parent as UriBasedDirective)).uriElement;
+      return (parent as UriBasedDirective).uriElement;
     }
     return null;
   }
+
   Element visitVariableDeclaration(VariableDeclaration node) => node.element;
 }
+
 /**
  * Instances of the class `GeneralizingASTVisitor` implement an AST visitor that will
  * recursively visit all of the nodes in an AST structure (like instances of the class
  * [RecursiveASTVisitor]). In addition, when a node of a specific type is visited not only
  * will the visit method for that specific type of node be invoked, but additional methods for the
  * superclasses of that node will also be invoked. For example, using an instance of this class to
  * visit a [Block] will cause the method [visitBlock] to be invoked but will
  * also cause the methods [visitStatement] and [visitNode] to be
  * subsequently invoked. This allows visitors to be written that visit all statements without
  * needing to override the visit method for each of the specific subclasses of [Statement].
  *
  * Subclasses that override a visit method must either invoke the overridden visit method or
  * explicitly invoke the more general visit method. Failure to do so will cause the visit methods
  * for superclasses of the node to not be invoked and will cause the children of the visited node to
  * not be visited.
  *
  * @coverage dart.engine.ast
  */
 class GeneralizingASTVisitor<R> implements ASTVisitor<R> {
   R visitAdjacentStrings(AdjacentStrings node) => visitStringLiteral(node);
+
   R visitAnnotatedNode(AnnotatedNode node) => visitNode(node);
+
   R visitAnnotation(Annotation node) => visitNode(node);
+
   R visitArgumentDefinitionTest(ArgumentDefinitionTest node) => visitExpression(node);
+
   R visitArgumentList(ArgumentList node) => visitNode(node);
+
   R visitAsExpression(AsExpression node) => visitExpression(node);
+
   R visitAssertStatement(AssertStatement node) => visitStatement(node);
+
   R visitAssignmentExpression(AssignmentExpression node) => visitExpression(node);
+
   R visitBinaryExpression(BinaryExpression node) => visitExpression(node);
+
   R visitBlock(Block node) => visitStatement(node);
+
   R visitBlockFunctionBody(BlockFunctionBody node) => visitFunctionBody(node);
+
   R visitBooleanLiteral(BooleanLiteral node) => visitLiteral(node);
+
   R visitBreakStatement(BreakStatement node) => visitStatement(node);
+
   R visitCascadeExpression(CascadeExpression node) => visitExpression(node);
+
   R visitCatchClause(CatchClause node) => visitNode(node);
+
   R visitClassDeclaration(ClassDeclaration node) => visitCompilationUnitMember(node);
+
   R visitClassMember(ClassMember node) => visitDeclaration(node);
+
   R visitClassTypeAlias(ClassTypeAlias node) => visitTypeAlias(node);
+
   R visitCombinator(Combinator node) => visitNode(node);
+
   R visitComment(Comment node) => visitNode(node);
+
   R visitCommentReference(CommentReference node) => visitNode(node);
+
   R visitCompilationUnit(CompilationUnit node) => visitNode(node);
+
   R visitCompilationUnitMember(CompilationUnitMember node) => visitDeclaration(node);
+
   R visitConditionalExpression(ConditionalExpression node) => visitExpression(node);
+
   R visitConstructorDeclaration(ConstructorDeclaration node) => visitClassMember(node);
+
   R visitConstructorFieldInitializer(ConstructorFieldInitializer node) => visitConstructorInitializer(node);
+
   R visitConstructorInitializer(ConstructorInitializer node) => visitNode(node);
+
   R visitConstructorName(ConstructorName node) => visitNode(node);
+
   R visitContinueStatement(ContinueStatement node) => visitStatement(node);
+
   R visitDeclaration(Declaration node) => visitAnnotatedNode(node);
+
   R visitDeclaredIdentifier(DeclaredIdentifier node) => visitDeclaration(node);
+
   R visitDefaultFormalParameter(DefaultFormalParameter node) => visitFormalParameter(node);
+
   R visitDirective(Directive node) => visitAnnotatedNode(node);
+
   R visitDoStatement(DoStatement node) => visitStatement(node);
+
   R visitDoubleLiteral(DoubleLiteral node) => visitLiteral(node);
+
   R visitEmptyFunctionBody(EmptyFunctionBody node) => visitFunctionBody(node);
+
   R visitEmptyStatement(EmptyStatement node) => visitStatement(node);
+
   R visitExportDirective(ExportDirective node) => visitNamespaceDirective(node);
+
   R visitExpression(Expression node) => visitNode(node);
+
   R visitExpressionFunctionBody(ExpressionFunctionBody node) => visitFunctionBody(node);
+
   R visitExpressionStatement(ExpressionStatement node) => visitStatement(node);
+
   R visitExtendsClause(ExtendsClause node) => visitNode(node);
+
   R visitFieldDeclaration(FieldDeclaration node) => visitClassMember(node);
+
   R visitFieldFormalParameter(FieldFormalParameter node) => visitNormalFormalParameter(node);
+
   R visitForEachStatement(ForEachStatement node) => visitStatement(node);
+
   R visitFormalParameter(FormalParameter node) => visitNode(node);
+
   R visitFormalParameterList(FormalParameterList node) => visitNode(node);
+
   R visitForStatement(ForStatement node) => visitStatement(node);
+
   R visitFunctionBody(FunctionBody node) => visitNode(node);
+
   R visitFunctionDeclaration(FunctionDeclaration node) => visitCompilationUnitMember(node);
+
   R visitFunctionDeclarationStatement(FunctionDeclarationStatement node) => visitStatement(node);
+
   R visitFunctionExpression(FunctionExpression node) => visitExpression(node);
+
   R visitFunctionExpressionInvocation(FunctionExpressionInvocation node) => visitExpression(node);
+
   R visitFunctionTypeAlias(FunctionTypeAlias node) => visitTypeAlias(node);
+
   R visitFunctionTypedFormalParameter(FunctionTypedFormalParameter node) => visitNormalFormalParameter(node);
+
   R visitHideCombinator(HideCombinator node) => visitCombinator(node);
+
   R visitIdentifier(Identifier node) => visitExpression(node);
+
   R visitIfStatement(IfStatement node) => visitStatement(node);
+
   R visitImplementsClause(ImplementsClause node) => visitNode(node);
+
   R visitImportDirective(ImportDirective node) => visitNamespaceDirective(node);
+
   R visitIndexExpression(IndexExpression node) => visitExpression(node);
+
   R visitInstanceCreationExpression(InstanceCreationExpression node) => visitExpression(node);
+
   R visitIntegerLiteral(IntegerLiteral node) => visitLiteral(node);
+
   R visitInterpolationElement(InterpolationElement node) => visitNode(node);
+
   R visitInterpolationExpression(InterpolationExpression node) => visitInterpolationElement(node);
+
   R visitInterpolationString(InterpolationString node) => visitInterpolationElement(node);
+
   R visitIsExpression(IsExpression node) => visitExpression(node);
+
   R visitLabel(Label node) => visitNode(node);
+
   R visitLabeledStatement(LabeledStatement node) => visitStatement(node);
+
   R visitLibraryDirective(LibraryDirective node) => visitDirective(node);
+
   R visitLibraryIdentifier(LibraryIdentifier node) => visitIdentifier(node);
+
   R visitListLiteral(ListLiteral node) => visitTypedLiteral(node);
+
   R visitLiteral(Literal node) => visitExpression(node);
+
   R visitMapLiteral(MapLiteral node) => visitTypedLiteral(node);
+
   R visitMapLiteralEntry(MapLiteralEntry node) => visitNode(node);
+
   R visitMethodDeclaration(MethodDeclaration node) => visitClassMember(node);
+
   R visitMethodInvocation(MethodInvocation node) => visitExpression(node);
+
   R visitNamedExpression(NamedExpression node) => visitExpression(node);
+
   R visitNamespaceDirective(NamespaceDirective node) => visitUriBasedDirective(node);
+
   R visitNativeClause(NativeClause node) => visitNode(node);
+
   R visitNativeFunctionBody(NativeFunctionBody node) => visitFunctionBody(node);
+
   R visitNode(ASTNode node) {
     node.visitChildren(this);
     return null;
   }
+
   R visitNormalFormalParameter(NormalFormalParameter node) => visitFormalParameter(node);
+
   R visitNullLiteral(NullLiteral node) => visitLiteral(node);
+
   R visitParenthesizedExpression(ParenthesizedExpression node) => visitExpression(node);
+
   R visitPartDirective(PartDirective node) => visitUriBasedDirective(node);
+
   R visitPartOfDirective(PartOfDirective node) => visitDirective(node);
+
   R visitPostfixExpression(PostfixExpression node) => visitExpression(node);
+
   R visitPrefixedIdentifier(PrefixedIdentifier node) => visitIdentifier(node);
+
   R visitPrefixExpression(PrefixExpression node) => visitExpression(node);
+
   R visitPropertyAccess(PropertyAccess node) => visitExpression(node);
+
   R visitRedirectingConstructorInvocation(RedirectingConstructorInvocation node) => visitConstructorInitializer(node);
+
   R visitRethrowExpression(RethrowExpression node) => visitExpression(node);
+
   R visitReturnStatement(ReturnStatement node) => visitStatement(node);
+
   R visitScriptTag(ScriptTag scriptTag) => visitNode(scriptTag);
+
   R visitShowCombinator(ShowCombinator node) => visitCombinator(node);
+
   R visitSimpleFormalParameter(SimpleFormalParameter node) => visitNormalFormalParameter(node);
+
   R visitSimpleIdentifier(SimpleIdentifier node) => visitIdentifier(node);
+
   R visitSimpleStringLiteral(SimpleStringLiteral node) => visitStringLiteral(node);
+
   R visitStatement(Statement node) => visitNode(node);
+
   R visitStringInterpolation(StringInterpolation node) => visitStringLiteral(node);
+
   R visitStringLiteral(StringLiteral node) => visitLiteral(node);
+
   R visitSuperConstructorInvocation(SuperConstructorInvocation node) => visitConstructorInitializer(node);
+
   R visitSuperExpression(SuperExpression node) => visitExpression(node);
+
   R visitSwitchCase(SwitchCase node) => visitSwitchMember(node);
+
   R visitSwitchDefault(SwitchDefault node) => visitSwitchMember(node);
+
   R visitSwitchMember(SwitchMember node) => visitNode(node);
+
   R visitSwitchStatement(SwitchStatement node) => visitStatement(node);
+
   R visitSymbolLiteral(SymbolLiteral node) => visitLiteral(node);
+
   R visitThisExpression(ThisExpression node) => visitExpression(node);
+
   R visitThrowExpression(ThrowExpression node) => visitExpression(node);
+
   R visitTopLevelVariableDeclaration(TopLevelVariableDeclaration node) => visitCompilationUnitMember(node);
+
   R visitTryStatement(TryStatement node) => visitStatement(node);
+
   R visitTypeAlias(TypeAlias node) => visitCompilationUnitMember(node);
+
   R visitTypeArgumentList(TypeArgumentList node) => visitNode(node);
+
   R visitTypedLiteral(TypedLiteral node) => visitLiteral(node);
+
   R visitTypeName(TypeName node) => visitNode(node);
+
   R visitTypeParameter(TypeParameter node) => visitNode(node);
+
   R visitTypeParameterList(TypeParameterList node) => visitNode(node);
+
   R visitUriBasedDirective(UriBasedDirective node) => visitDirective(node);
+
   R visitVariableDeclaration(VariableDeclaration node) => visitDeclaration(node);
+
   R visitVariableDeclarationList(VariableDeclarationList node) => visitNode(node);
+
   R visitVariableDeclarationStatement(VariableDeclarationStatement node) => visitStatement(node);
+
   R visitWhileStatement(WhileStatement node) => visitStatement(node);
+
   R visitWithClause(WithClause node) => visitNode(node);
 }
+
 /**
  * Instances of the class `NodeLocator` locate the [ASTNode] associated with a
  * source range, given the AST structure built from the source. More specifically, they will return
  * the [ASTNode] with the shortest length whose source range completely encompasses
  * the specified range.
  *
  * @coverage dart.engine.ast
  */
 class NodeLocator extends UnifyingASTVisitor<Object> {
-
   /**
    * The start offset of the range used to identify the node.
    */
   int _startOffset = 0;
 
   /**
    * The end offset of the range used to identify the node.
    */
   int _endOffset = 0;
 
@@ skipping 37 matching lines @@
     }
     try {
       node.accept(this);
     } on NodeLocator_NodeFoundException catch (exception) {
     } on JavaException catch (exception) {
       AnalysisEngine.instance.logger.logInformation2("Unable to locate element at offset (${_startOffset} - ${_endOffset})", exception);
       return null;
     }
     return foundNode;
   }
+
   Object visitNode(ASTNode node) {
     int start = node.offset;
     int end = start + node.length;
     if (end < _startOffset) {
       return null;
     }
     if (start > _endOffset) {
       return null;
     }
     try {
       node.visitChildren(this);
     } on NodeLocator_NodeFoundException catch (exception) {
       throw exception;
     } on JavaException catch (exception) {
       AnalysisEngine.instance.logger.logInformation2("Exception caught while traversing an AST structure.", exception);
     }
     if (start <= _startOffset && _endOffset <= end) {
       foundNode = node;
       throw new NodeLocator_NodeFoundException();
     }
     return null;
   }
 }
+
 /**
  * Instances of the class `NodeFoundException` are used to cancel visiting after a node has
  * been found.
  */
 class NodeLocator_NodeFoundException extends RuntimeException {
   static int _serialVersionUID = 1;
 }
+
 /**
  * Instances of the class `RecursiveASTVisitor` implement an AST visitor that will recursively
  * visit all of the nodes in an AST structure. For example, using an instance of this class to visit
  * a [Block] will also cause all of the statements in the block to be visited.
  *
  * Subclasses that override a visit method must either invoke the overridden visit method or must
  * explicitly ask the visited node to visit its children. Failure to do so will cause the children
  * of the visited node to not be visited.
  *
  * @coverage dart.engine.ast
  */
 class RecursiveASTVisitor<R> implements ASTVisitor<R> {
   R visitAdjacentStrings(AdjacentStrings node) {
     node.visitChildren(this);
     return null;
   }
+
   R visitAnnotation(Annotation node) {
     node.visitChildren(this);
     return null;
   }
+
   R visitArgumentDefinitionTest(ArgumentDefinitionTest node) {
     node.visitChildren(this);
     return null;
   }
+
   R visitArgumentList(ArgumentList node) {
     node.visitChildren(this);
     return null;
   }
+
   R visitAsExpression(AsExpression node) {
     node.visitChildren(this);
     return null;
   }
+
   R visitAssertStatement(AssertStatement node) {
     node.visitChildren(this);
     return null;
   }
+
   R visitAssignmentExpression(AssignmentExpression node) {
     node.visitChildren(this);
     return null;
   }
+
   R visitBinaryExpression(BinaryExpression node) {
     node.visitChildren(this);
     return null;
   }
+
   R visitBlock(Block node) {
     node.visitChildren(this);
     return null;
   }
+
   R visitBlockFunctionBody(BlockFunctionBody node) {
     node.visitChildren(this);
     return null;
   }
+
   R visitBooleanLiteral(BooleanLiteral node) {
     node.visitChildren(this);
     return null;
   }
+
   R visitBreakStatement(BreakStatement node) {
     node.visitChildren(this);
     return null;
   }
+
   R visitCascadeExpression(CascadeExpression node) {
     node.visitChildren(this);
     return null;
   }
+
   R visitCatchClause(CatchClause node) {
     node.visitChildren(this);
     return null;
   }
+
   R visitClassDeclaration(ClassDeclaration node) {
     node.visitChildren(this);
     return null;
   }
+
   R visitClassTypeAlias(ClassTypeAlias node) {
     node.visitChildren(this);
     return null;
   }
+
   R visitComment(Comment node) {
     node.visitChildren(this);
     return null;
   }
+
   R visitCommentReference(CommentReference node) {
     node.visitChildren(this);
     return null;
   }
+
   R visitCompilationUnit(CompilationUnit node) {
     node.visitChildren(this);
     return null;
   }
+
   R visitConditionalExpression(ConditionalExpression node) {
     node.visitChildren(this);
     return null;
   }
+
   R visitConstructorDeclaration(ConstructorDeclaration node) {
     node.visitChildren(this);
     return null;
   }
+
   R visitConstructorFieldInitializer(ConstructorFieldInitializer node) {
     node.visitChildren(this);
     return null;
   }
+
   R visitConstructorName(ConstructorName node) {
     node.visitChildren(this);
     return null;
   }
+
   R visitContinueStatement(ContinueStatement node) {
     node.visitChildren(this);
     return null;
   }
+
   R visitDeclaredIdentifier(DeclaredIdentifier node) {
     node.visitChildren(this);
     return null;
   }
+
   R visitDefaultFormalParameter(DefaultFormalParameter node) {
     node.visitChildren(this);
     return null;
   }
+
   R visitDoStatement(DoStatement node) {
     node.visitChildren(this);
     return null;
   }
+
   R visitDoubleLiteral(DoubleLiteral node) {
     node.visitChildren(this);
     return null;
   }
+
   R visitEmptyFunctionBody(EmptyFunctionBody node) {
     node.visitChildren(this);
     return null;
   }
+
   R visitEmptyStatement(EmptyStatement node) {
     node.visitChildren(this);
     return null;
   }
+
   R visitExportDirective(ExportDirective node) {
     node.visitChildren(this);
     return null;
   }
+
   R visitExpressionFunctionBody(ExpressionFunctionBody node) {
     node.visitChildren(this);
     return null;
   }
+
   R visitExpressionStatement(ExpressionStatement node) {
     node.visitChildren(this);
     return null;
   }
+
   R visitExtendsClause(ExtendsClause node) {
     node.visitChildren(this);
     return null;
   }
+
   R visitFieldDeclaration(FieldDeclaration node) {
     node.visitChildren(this);
     return null;
   }
+
   R visitFieldFormalParameter(FieldFormalParameter node) {
     node.visitChildren(this);
     return null;
   }
+
   R visitForEachStatement(ForEachStatement node) {
     node.visitChildren(this);
     return null;
   }
+
   R visitFormalParameterList(FormalParameterList node) {
     node.visitChildren(this);
     return null;
   }
+
   R visitForStatement(ForStatement node) {
     node.visitChildren(this);
     return null;
   }
+
   R visitFunctionDeclaration(FunctionDeclaration node) {
     node.visitChildren(this);
     return null;
   }
+
   R visitFunctionDeclarationStatement(FunctionDeclarationStatement node) {
     node.visitChildren(this);
     return null;
   }
+
   R visitFunctionExpression(FunctionExpression node) {
     node.visitChildren(this);
     return null;
   }
+
   R visitFunctionExpressionInvocation(FunctionExpressionInvocation node) {
     node.visitChildren(this);
     return null;
   }
+
   R visitFunctionTypeAlias(FunctionTypeAlias node) {
     node.visitChildren(this);
     return null;
   }
+
   R visitFunctionTypedFormalParameter(FunctionTypedFormalParameter node) {
     node.visitChildren(this);
     return null;
   }
+
   R visitHideCombinator(HideCombinator node) {
     node.visitChildren(this);
     return null;
   }
+
   R visitIfStatement(IfStatement node) {
     node.visitChildren(this);
     return null;
   }
+
   R visitImplementsClause(ImplementsClause node) {
     node.visitChildren(this);
     return null;
   }
+
   R visitImportDirective(ImportDirective node) {
     node.visitChildren(this);
     return null;
   }
+
   R visitIndexExpression(IndexExpression node) {
     node.visitChildren(this);
     return null;
   }
+
   R visitInstanceCreationExpression(InstanceCreationExpression node) {
     node.visitChildren(this);
     return null;
   }
+
   R visitIntegerLiteral(IntegerLiteral node) {
     node.visitChildren(this);
     return null;
   }
+
   R visitInterpolationExpression(InterpolationExpression node) {
     node.visitChildren(this);
     return null;
   }
+
   R visitInterpolationString(InterpolationString node) {
     node.visitChildren(this);
     return null;
   }
+
   R visitIsExpression(IsExpression node) {
     node.visitChildren(this);
     return null;
   }
+
   R visitLabel(Label node) {
     node.visitChildren(this);
     return null;
   }
+
   R visitLabeledStatement(LabeledStatement node) {
     node.visitChildren(this);
     return null;
   }
+
   R visitLibraryDirective(LibraryDirective node) {
     node.visitChildren(this);
     return null;
   }
+
   R visitLibraryIdentifier(LibraryIdentifier node) {
     node.visitChildren(this);
     return null;
   }
+
   R visitListLiteral(ListLiteral node) {
     node.visitChildren(this);
     return null;
   }
+
   R visitMapLiteral(MapLiteral node) {
     node.visitChildren(this);
     return null;
   }
+
   R visitMapLiteralEntry(MapLiteralEntry node) {
     node.visitChildren(this);
     return null;
   }
+
   R visitMethodDeclaration(MethodDeclaration node) {
     node.visitChildren(this);
     return null;
   }
+
   R visitMethodInvocation(MethodInvocation node) {
     node.visitChildren(this);
     return null;
   }
+
   R visitNamedExpression(NamedExpression node) {
     node.visitChildren(this);
     return null;
   }
+
   R visitNativeClause(NativeClause node) {
     node.visitChildren(this);
     return null;
   }
+
   R visitNativeFunctionBody(NativeFunctionBody node) {
     node.visitChildren(this);
     return null;
   }
+
   R visitNullLiteral(NullLiteral node) {
     node.visitChildren(this);
     return null;
   }
+
   R visitParenthesizedExpression(ParenthesizedExpression node) {
     node.visitChildren(this);
     return null;
   }
+
   R visitPartDirective(PartDirective node) {
     node.visitChildren(this);
     return null;
   }
+
   R visitPartOfDirective(PartOfDirective node) {
     node.visitChildren(this);
     return null;
   }
+
   R visitPostfixExpression(PostfixExpression node) {
     node.visitChildren(this);
     return null;
   }
+
   R visitPrefixedIdentifier(PrefixedIdentifier node) {
     node.visitChildren(this);
     return null;
   }
+
   R visitPrefixExpression(PrefixExpression node) {
     node.visitChildren(this);
     return null;
   }
+
   R visitPropertyAccess(PropertyAccess node) {
     node.visitChildren(this);
     return null;
   }
+
   R visitRedirectingConstructorInvocation(RedirectingConstructorInvocation node) {
     node.visitChildren(this);
     return null;
   }
+
   R visitRethrowExpression(RethrowExpression node) {
     node.visitChildren(this);
     return null;
   }
+
   R visitReturnStatement(ReturnStatement node) {
     node.visitChildren(this);
     return null;
   }
+
   R visitScriptTag(ScriptTag node) {
     node.visitChildren(this);
     return null;
   }
+
   R visitShowCombinator(ShowCombinator node) {
     node.visitChildren(this);
     return null;
   }
+
   R visitSimpleFormalParameter(SimpleFormalParameter node) {
     node.visitChildren(this);
     return null;
   }
+
   R visitSimpleIdentifier(SimpleIdentifier node) {
     node.visitChildren(this);
     return null;
   }
+
   R visitSimpleStringLiteral(SimpleStringLiteral node) {
     node.visitChildren(this);
     return null;
   }
+
   R visitStringInterpolation(StringInterpolation node) {
     node.visitChildren(this);
     return null;
   }
+
   R visitSuperConstructorInvocation(SuperConstructorInvocation node) {
     node.visitChildren(this);
     return null;
   }
+
   R visitSuperExpression(SuperExpression node) {
     node.visitChildren(this);
     return null;
   }
+
   R visitSwitchCase(SwitchCase node) {
     node.visitChildren(this);
     return null;
   }
+
   R visitSwitchDefault(SwitchDefault node) {
     node.visitChildren(this);
     return null;
   }
+
   R visitSwitchStatement(SwitchStatement node) {
     node.visitChildren(this);
     return null;
   }
+
   R visitSymbolLiteral(SymbolLiteral node) {
     node.visitChildren(this);
     return null;
   }
+
   R visitThisExpression(ThisExpression node) {
     node.visitChildren(this);
     return null;
   }
+
   R visitThrowExpression(ThrowExpression node) {
     node.visitChildren(this);
     return null;
   }
+
   R visitTopLevelVariableDeclaration(TopLevelVariableDeclaration node) {
     node.visitChildren(this);
     return null;
   }
+
   R visitTryStatement(TryStatement node) {
     node.visitChildren(this);
     return null;
   }
+
   R visitTypeArgumentList(TypeArgumentList node) {
     node.visitChildren(this);
     return null;
   }
+
   R visitTypeName(TypeName node) {
     node.visitChildren(this);
     return null;
   }
+
   R visitTypeParameter(TypeParameter node) {
     node.visitChildren(this);
     return null;
   }
+
   R visitTypeParameterList(TypeParameterList node) {
     node.visitChildren(this);
     return null;
   }
+
   R visitVariableDeclaration(VariableDeclaration node) {
     node.visitChildren(this);
     return null;
   }
+
   R visitVariableDeclarationList(VariableDeclarationList node) {
     node.visitChildren(this);
     return null;
   }
+
   R visitVariableDeclarationStatement(VariableDeclarationStatement node) {
     node.visitChildren(this);
     return null;
   }
+
   R visitWhileStatement(WhileStatement node) {
     node.visitChildren(this);
     return null;
   }
+
   R visitWithClause(WithClause node) {
     node.visitChildren(this);
     return null;
   }
 }
+
 /**
  * Instances of the class `SimpleASTVisitor` implement an AST visitor that will do nothing
  * when visiting an AST node. It is intended to be a superclass for classes that use the visitor
  * pattern primarily as a dispatch mechanism (and hence don't need to recursively visit a whole
  * structure) and that only need to visit a small number of node types.
  *
  * @coverage dart.engine.ast
  */
 class SimpleASTVisitor<R> implements ASTVisitor<R> {
   R visitAdjacentStrings(AdjacentStrings node) => null;
+
   R visitAnnotation(Annotation node) => null;
+
   R visitArgumentDefinitionTest(ArgumentDefinitionTest node) => null;
+
   R visitArgumentList(ArgumentList node) => null;
+
   R visitAsExpression(AsExpression node) => null;
+
   R visitAssertStatement(AssertStatement node) => null;
+
   R visitAssignmentExpression(AssignmentExpression node) => null;
+
   R visitBinaryExpression(BinaryExpression node) => null;
+
   R visitBlock(Block node) => null;
+
   R visitBlockFunctionBody(BlockFunctionBody node) => null;
+
   R visitBooleanLiteral(BooleanLiteral node) => null;
+
   R visitBreakStatement(BreakStatement node) => null;
+
   R visitCascadeExpression(CascadeExpression node) => null;
+
   R visitCatchClause(CatchClause node) => null;
+
   R visitClassDeclaration(ClassDeclaration node) => null;
+
   R visitClassTypeAlias(ClassTypeAlias node) => null;
+
   R visitComment(Comment node) => null;
+
   R visitCommentReference(CommentReference node) => null;
+
   R visitCompilationUnit(CompilationUnit node) => null;
+
   R visitConditionalExpression(ConditionalExpression node) => null;
+
   R visitConstructorDeclaration(ConstructorDeclaration node) => null;
+
   R visitConstructorFieldInitializer(ConstructorFieldInitializer node) => null;
+
   R visitConstructorName(ConstructorName node) => null;
+
   R visitContinueStatement(ContinueStatement node) => null;
+
   R visitDeclaredIdentifier(DeclaredIdentifier node) => null;
+
   R visitDefaultFormalParameter(DefaultFormalParameter node) => null;
+
   R visitDoStatement(DoStatement node) => null;
+
   R visitDoubleLiteral(DoubleLiteral node) => null;
+
   R visitEmptyFunctionBody(EmptyFunctionBody node) => null;
+
   R visitEmptyStatement(EmptyStatement node) => null;
+
   R visitExportDirective(ExportDirective node) => null;
+
   R visitExpressionFunctionBody(ExpressionFunctionBody node) => null;
+
   R visitExpressionStatement(ExpressionStatement node) => null;
+
   R visitExtendsClause(ExtendsClause node) => null;
+
   R visitFieldDeclaration(FieldDeclaration node) => null;
+
   R visitFieldFormalParameter(FieldFormalParameter node) => null;
+
   R visitForEachStatement(ForEachStatement node) => null;
+
   R visitFormalParameterList(FormalParameterList node) => null;
+
   R visitForStatement(ForStatement node) => null;
+
   R visitFunctionDeclaration(FunctionDeclaration node) => null;
+
   R visitFunctionDeclarationStatement(FunctionDeclarationStatement node) => null;
+
   R visitFunctionExpression(FunctionExpression node) => null;
+
   R visitFunctionExpressionInvocation(FunctionExpressionInvocation node) => null;
+
   R visitFunctionTypeAlias(FunctionTypeAlias node) => null;
+
   R visitFunctionTypedFormalParameter(FunctionTypedFormalParameter node) => null;
+
   R visitHideCombinator(HideCombinator node) => null;
+
   R visitIfStatement(IfStatement node) => null;
+
   R visitImplementsClause(ImplementsClause node) => null;
+
   R visitImportDirective(ImportDirective node) => null;
+
   R visitIndexExpression(IndexExpression node) => null;
+
   R visitInstanceCreationExpression(InstanceCreationExpression node) => null;
+
   R visitIntegerLiteral(IntegerLiteral node) => null;
+
   R visitInterpolationExpression(InterpolationExpression node) => null;
+
   R visitInterpolationString(InterpolationString node) => null;
+
   R visitIsExpression(IsExpression node) => null;
+
   R visitLabel(Label node) => null;
+
   R visitLabeledStatement(LabeledStatement node) => null;
+
   R visitLibraryDirective(LibraryDirective node) => null;
+
   R visitLibraryIdentifier(LibraryIdentifier node) => null;
+
   R visitListLiteral(ListLiteral node) => null;
+
   R visitMapLiteral(MapLiteral node) => null;
+
   R visitMapLiteralEntry(MapLiteralEntry node) => null;
+
   R visitMethodDeclaration(MethodDeclaration node) => null;
+
   R visitMethodInvocation(MethodInvocation node) => null;
+
   R visitNamedExpression(NamedExpression node) => null;
+
   R visitNativeClause(NativeClause node) => null;
+
   R visitNativeFunctionBody(NativeFunctionBody node) => null;
+
   R visitNullLiteral(NullLiteral node) => null;
+
   R visitParenthesizedExpression(ParenthesizedExpression node) => null;
+
   R visitPartDirective(PartDirective node) => null;
+
   R visitPartOfDirective(PartOfDirective node) => null;
+
   R visitPostfixExpression(PostfixExpression node) => null;
+
   R visitPrefixedIdentifier(PrefixedIdentifier node) => null;
+
   R visitPrefixExpression(PrefixExpression node) => null;
+
   R visitPropertyAccess(PropertyAccess node) => null;
+
   R visitRedirectingConstructorInvocation(RedirectingConstructorInvocation node) => null;
+
   R visitRethrowExpression(RethrowExpression node) => null;
+
   R visitReturnStatement(ReturnStatement node) => null;
+
   R visitScriptTag(ScriptTag node) => null;
+
   R visitShowCombinator(ShowCombinator node) => null;
+
   R visitSimpleFormalParameter(SimpleFormalParameter node) => null;
+
   R visitSimpleIdentifier(SimpleIdentifier node) => null;
+
   R visitSimpleStringLiteral(SimpleStringLiteral node) => null;
+
   R visitStringInterpolation(StringInterpolation node) => null;
+
   R visitSuperConstructorInvocation(SuperConstructorInvocation node) => null;
+
   R visitSuperExpression(SuperExpression node) => null;
+
   R visitSwitchCase(SwitchCase node) => null;
+
   R visitSwitchDefault(SwitchDefault node) => null;
+
   R visitSwitchStatement(SwitchStatement node) => null;
+
   R visitSymbolLiteral(SymbolLiteral node) => null;
+
   R visitThisExpression(ThisExpression node) => null;
+
   R visitThrowExpression(ThrowExpression node) => null;
+
   R visitTopLevelVariableDeclaration(TopLevelVariableDeclaration node) => null;
+
   R visitTryStatement(TryStatement node) => null;
+
   R visitTypeArgumentList(TypeArgumentList node) => null;
+
   R visitTypeName(TypeName node) => null;
+
   R visitTypeParameter(TypeParameter node) => null;
+
   R visitTypeParameterList(TypeParameterList node) => null;
+
   R visitVariableDeclaration(VariableDeclaration node) => null;
+
   R visitVariableDeclarationList(VariableDeclarationList node) => null;
+
   R visitVariableDeclarationStatement(VariableDeclarationStatement node) => null;
+
   R visitWhileStatement(WhileStatement node) => null;
+
   R visitWithClause(WithClause node) => null;
 }
+
 /**
  * Instances of the class `ToSourceVisitor` write a source representation of a visited AST
  * node (and all of it's children) to a writer.
  *
  * @coverage dart.engine.ast
  */
 class ToSourceVisitor implements ASTVisitor<Object> {
-
   /**
    * The writer to which the source is to be written.
    */
   PrintWriter _writer;
 
   /**
    * Initialize a newly created visitor to write source code representing the visited nodes to the
    * given writer.
    *
    * @param writer the writer to which the source is to be written
    */
   ToSourceVisitor(PrintWriter writer) {
     this._writer = writer;
   }
+
   Object visitAdjacentStrings(AdjacentStrings node) {
     visitList2(node.strings, " ");
     return null;
   }
+
   Object visitAnnotation(Annotation node) {
     _writer.print('@');
     visit(node.name);
     visit3(".", node.constructorName);
     visit(node.arguments);
     return null;
   }
+
   Object visitArgumentDefinitionTest(ArgumentDefinitionTest node) {
     _writer.print('?');
     visit(node.identifier);
     return null;
   }
+
   Object visitArgumentList(ArgumentList node) {
     _writer.print('(');
     visitList2(node.arguments, ", ");
     _writer.print(')');
     return null;
   }
+
   Object visitAsExpression(AsExpression node) {
     visit(node.expression);
     _writer.print(" as ");
     visit(node.type);
     return null;
   }
+
   Object visitAssertStatement(AssertStatement node) {
     _writer.print("assert (");
     visit(node.condition);
     _writer.print(");");
     return null;
   }
+
   Object visitAssignmentExpression(AssignmentExpression node) {
     visit(node.leftHandSide);
     _writer.print(' ');
     _writer.print(node.operator.lexeme);
     _writer.print(' ');
     visit(node.rightHandSide);
     return null;
   }
+
   Object visitBinaryExpression(BinaryExpression node) {
     visit(node.leftOperand);
     _writer.print(' ');
     _writer.print(node.operator.lexeme);
     _writer.print(' ');
     visit(node.rightOperand);
     return null;
   }
+
   Object visitBlock(Block node) {
     _writer.print('{');
     visitList2(node.statements, " ");
     _writer.print('}');
     return null;
   }
+
   Object visitBlockFunctionBody(BlockFunctionBody node) {
     visit(node.block);
     return null;
   }
+
   Object visitBooleanLiteral(BooleanLiteral node) {
     _writer.print(node.literal.lexeme);
     return null;
   }
+
   Object visitBreakStatement(BreakStatement node) {
     _writer.print("break");
     visit3(" ", node.label);
     _writer.print(";");
     return null;
   }
+
   Object visitCascadeExpression(CascadeExpression node) {
     visit(node.target);
     visitList(node.cascadeSections);
     return null;
   }
+
   Object visitCatchClause(CatchClause node) {
     visit3("on ", node.exceptionType);
     if (node.catchKeyword != null) {
       if (node.exceptionType != null) {
         _writer.print(' ');
       }
       _writer.print("catch (");
       visit(node.exceptionParameter);
       visit3(", ", node.stackTraceParameter);
       _writer.print(") ");
     } else {
       _writer.print(" ");
     }
     visit(node.body);
     return null;
   }
+
   Object visitClassDeclaration(ClassDeclaration node) {
     visit5(node.abstractKeyword, " ");
     _writer.print("class ");
     visit(node.name);
     visit(node.typeParameters);
     visit3(" ", node.extendsClause);
     visit3(" ", node.withClause);
     visit3(" ", node.implementsClause);
     _writer.print(" {");
     visitList2(node.members, " ");
     _writer.print("}");
     return null;
   }
+
   Object visitClassTypeAlias(ClassTypeAlias node) {
     _writer.print("class ");
     visit(node.name);
     visit(node.typeParameters);
     _writer.print(" = ");
     if (node.abstractKeyword != null) {
       _writer.print("abstract ");
     }
     visit(node.superclass);
     visit3(" ", node.withClause);
     visit3(" ", node.implementsClause);
     _writer.print(";");
     return null;
   }
+
   Object visitComment(Comment node) => null;
+
   Object visitCommentReference(CommentReference node) => null;
+
   Object visitCompilationUnit(CompilationUnit node) {
     ScriptTag scriptTag = node.scriptTag;
     NodeList<Directive> directives = node.directives;
     visit(scriptTag);
     String prefix = scriptTag == null ? "" : " ";
     visitList4(prefix, directives, " ");
     prefix = scriptTag == null && directives.isEmpty ? "" : " ";
     visitList4(prefix, node.declarations, " ");
     return null;
   }
+
   Object visitConditionalExpression(ConditionalExpression node) {
     visit(node.condition);
     _writer.print(" ? ");
     visit(node.thenExpression);
     _writer.print(" : ");
     visit(node.elseExpression);
     return null;
   }
+
   Object visitConstructorDeclaration(ConstructorDeclaration node) {
     visit5(node.externalKeyword, " ");
     visit5(node.constKeyword, " ");
     visit5(node.factoryKeyword, " ");
     visit(node.returnType);
     visit3(".", node.name);
     visit(node.parameters);
     visitList4(" : ", node.initializers, ", ");
     visit3(" = ", node.redirectedConstructor);
     visit4(" ", node.body);
     return null;
   }
+
   Object visitConstructorFieldInitializer(ConstructorFieldInitializer node) {
     visit5(node.keyword, ".");
     visit(node.fieldName);
     _writer.print(" = ");
     visit(node.expression);
     return null;
   }
+
   Object visitConstructorName(ConstructorName node) {
     visit(node.type);
     visit3(".", node.name);
     return null;
   }
+
   Object visitContinueStatement(ContinueStatement node) {
     _writer.print("continue");
     visit3(" ", node.label);
     _writer.print(";");
     return null;
   }
+
   Object visitDeclaredIdentifier(DeclaredIdentifier node) {
     visit5(node.keyword, " ");
     visit2(node.type, " ");
     visit(node.identifier);
     return null;
   }
+
   Object visitDefaultFormalParameter(DefaultFormalParameter node) {
     visit(node.parameter);
     if (node.separator != null) {
       _writer.print(" ");
       _writer.print(node.separator.lexeme);
       visit3(" ", node.defaultValue);
     }
     return null;
   }
+
   Object visitDoStatement(DoStatement node) {
     _writer.print("do ");
     visit(node.body);
     _writer.print(" while (");
     visit(node.condition);
     _writer.print(");");
     return null;
   }
+
   Object visitDoubleLiteral(DoubleLiteral node) {
     _writer.print(node.literal.lexeme);
     return null;
   }
+
   Object visitEmptyFunctionBody(EmptyFunctionBody node) {
     _writer.print(';');
     return null;
   }
+
   Object visitEmptyStatement(EmptyStatement node) {
     _writer.print(';');
     return null;
   }
+
   Object visitExportDirective(ExportDirective node) {
     _writer.print("export ");
     visit(node.uri);
     visitList4(" ", node.combinators, " ");
     _writer.print(';');
     return null;
   }
+
   Object visitExpressionFunctionBody(ExpressionFunctionBody node) {
     _writer.print("=> ");
     visit(node.expression);
     if (node.semicolon != null) {
       _writer.print(';');
     }
     return null;
   }
+
   Object visitExpressionStatement(ExpressionStatement node) {
     visit(node.expression);
     _writer.print(';');
     return null;
   }
+
   Object visitExtendsClause(ExtendsClause node) {
     _writer.print("extends ");
     visit(node.superclass);
     return null;
   }
+
   Object visitFieldDeclaration(FieldDeclaration node) {
     visit5(node.staticKeyword, " ");
     visit(node.fields);
     _writer.print(";");
     return null;
   }
+
   Object visitFieldFormalParameter(FieldFormalParameter node) {
     visit5(node.keyword, " ");
     visit2(node.type, " ");
     _writer.print("this.");
     visit(node.identifier);
     visit(node.parameters);
     return null;
   }
+
   Object visitForEachStatement(ForEachStatement node) {
     DeclaredIdentifier loopVariable = node.loopVariable;
     _writer.print("for (");
     if (loopVariable == null) {
       visit(node.identifier);
     } else {
       visit(loopVariable);
     }
     _writer.print(" in ");
     visit(node.iterator);
     _writer.print(") ");
     visit(node.body);
     return null;
   }
+
   Object visitFormalParameterList(FormalParameterList node) {
     String groupEnd = null;
     _writer.print('(');
     NodeList<FormalParameter> parameters = node.parameters;
     int size = parameters.length;
     for (int i = 0; i < size; i++) {
       FormalParameter parameter = parameters[i];
       if (i > 0) {
         _writer.print(", ");
       }
       if (groupEnd == null && parameter is DefaultFormalParameter) {
         if (identical(parameter.kind, ParameterKind.NAMED)) {
           groupEnd = "}";
           _writer.print('{');
         } else {
           groupEnd = "]";
           _writer.print('[');
         }
       }
       parameter.accept(this);
     }
     if (groupEnd != null) {
       _writer.print(groupEnd);
     }
     _writer.print(')');
     return null;
   }
+
   Object visitForStatement(ForStatement node) {
     Expression initialization = node.initialization;
     _writer.print("for (");
     if (initialization != null) {
       visit(initialization);
     } else {
       visit(node.variables);
     }
     _writer.print(";");
     visit3(" ", node.condition);
     _writer.print(";");
     visitList4(" ", node.updaters, ", ");
     _writer.print(") ");
     visit(node.body);
     return null;
   }
+
   Object visitFunctionDeclaration(FunctionDeclaration node) {
     visit2(node.returnType, " ");
     visit5(node.propertyKeyword, " ");
     visit(node.name);
     visit(node.functionExpression);
     return null;
   }
+
   Object visitFunctionDeclarationStatement(FunctionDeclarationStatement node) {
     visit(node.functionDeclaration);
     _writer.print(';');
     return null;
   }
+
   Object visitFunctionExpression(FunctionExpression node) {
     visit(node.parameters);
     _writer.print(' ');
     visit(node.body);
     return null;
   }
+
   Object visitFunctionExpressionInvocation(FunctionExpressionInvocation node) {
     visit(node.function);
     visit(node.argumentList);
     return null;
   }
+
   Object visitFunctionTypeAlias(FunctionTypeAlias node) {
     _writer.print("typedef ");
     visit2(node.returnType, " ");
     visit(node.name);
     visit(node.typeParameters);
     visit(node.parameters);
     _writer.print(";");
     return null;
   }
+
   Object visitFunctionTypedFormalParameter(FunctionTypedFormalParameter node) {
     visit2(node.returnType, " ");
     visit(node.identifier);
     visit(node.parameters);
     return null;
   }
+
   Object visitHideCombinator(HideCombinator node) {
     _writer.print("hide ");
     visitList2(node.hiddenNames, ", ");
     return null;
   }
+
   Object visitIfStatement(IfStatement node) {
     _writer.print("if (");
     visit(node.condition);
     _writer.print(") ");
     visit(node.thenStatement);
     visit3(" else ", node.elseStatement);
     return null;
   }
+
   Object visitImplementsClause(ImplementsClause node) {
     _writer.print("implements ");
     visitList2(node.interfaces, ", ");
     return null;
   }
+
   Object visitImportDirective(ImportDirective node) {
     _writer.print("import ");
     visit(node.uri);
     visit3(" as ", node.prefix);
     visitList4(" ", node.combinators, " ");
     _writer.print(';');
     return null;
   }
+
   Object visitIndexExpression(IndexExpression node) {
     if (node.isCascaded) {
       _writer.print("..");
     } else {
       visit(node.target);
     }
     _writer.print('[');
     visit(node.index);
     _writer.print(']');
     return null;
   }
+
   Object visitInstanceCreationExpression(InstanceCreationExpression node) {
     visit5(node.keyword, " ");
     visit(node.constructorName);
     visit(node.argumentList);
     return null;
   }
+
   Object visitIntegerLiteral(IntegerLiteral node) {
     _writer.print(node.literal.lexeme);
     return null;
   }
+
   Object visitInterpolationExpression(InterpolationExpression node) {
     if (node.rightBracket != null) {
       _writer.print("\${");
       visit(node.expression);
       _writer.print("}");
     } else {
       _writer.print("\$");
       visit(node.expression);
     }
     return null;
   }
+
   Object visitInterpolationString(InterpolationString node) {
     _writer.print(node.contents.lexeme);
     return null;
   }
+
   Object visitIsExpression(IsExpression node) {
     visit(node.expression);
     if (node.notOperator == null) {
       _writer.print(" is ");
     } else {
       _writer.print(" is! ");
     }
     visit(node.type);
     return null;
   }
+
   Object visitLabel(Label node) {
     visit(node.label);
     _writer.print(":");
     return null;
   }
+
   Object visitLabeledStatement(LabeledStatement node) {
     visitList3(node.labels, " ", " ");
     visit(node.statement);
     return null;
   }
+
   Object visitLibraryDirective(LibraryDirective node) {
     _writer.print("library ");
     visit(node.name);
     _writer.print(';');
     return null;
   }
+
   Object visitLibraryIdentifier(LibraryIdentifier node) {
     _writer.print(node.name);
     return null;
   }
+
   Object visitListLiteral(ListLiteral node) {
     if (node.constKeyword != null) {
       _writer.print(node.constKeyword.lexeme);
       _writer.print(' ');
     }
     visit2(node.typeArguments, " ");
     _writer.print("[");
     visitList2(node.elements, ", ");
     _writer.print("]");
     return null;
   }
+
   Object visitMapLiteral(MapLiteral node) {
     if (node.constKeyword != null) {
       _writer.print(node.constKeyword.lexeme);
       _writer.print(' ');
     }
     visit2(node.typeArguments, " ");
     _writer.print("{");
     visitList2(node.entries, ", ");
     _writer.print("}");
     return null;
   }
+
   Object visitMapLiteralEntry(MapLiteralEntry node) {
     visit(node.key);
     _writer.print(" : ");
     visit(node.value);
     return null;
   }
+
   Object visitMethodDeclaration(MethodDeclaration node) {
     visit5(node.externalKeyword, " ");
     visit5(node.modifierKeyword, " ");
     visit2(node.returnType, " ");
     visit5(node.propertyKeyword, " ");
     visit5(node.operatorKeyword, " ");
     visit(node.name);
     if (!node.isGetter) {
       visit(node.parameters);
     }
     visit4(" ", node.body);
     return null;
   }
+
   Object visitMethodInvocation(MethodInvocation node) {
     if (node.isCascaded) {
       _writer.print("..");
     } else {
       visit2(node.target, ".");
     }
     visit(node.methodName);
     visit(node.argumentList);
     return null;
   }
+
   Object visitNamedExpression(NamedExpression node) {
     visit(node.name);
     visit3(" ", node.expression);
     return null;
   }
+
   Object visitNativeClause(NativeClause node) {
     _writer.print("native ");
     visit(node.name);
     return null;
   }
+
   Object visitNativeFunctionBody(NativeFunctionBody node) {
     _writer.print("native ");
     visit(node.stringLiteral);
     _writer.print(';');
     return null;
   }
+
   Object visitNullLiteral(NullLiteral node) {
     _writer.print("null");
     return null;
   }
+
   Object visitParenthesizedExpression(ParenthesizedExpression node) {
     _writer.print('(');
     visit(node.expression);
     _writer.print(')');
     return null;
   }
+
   Object visitPartDirective(PartDirective node) {
     _writer.print("part ");
     visit(node.uri);
     _writer.print(';');
     return null;
   }
+
   Object visitPartOfDirective(PartOfDirective node) {
     _writer.print("part of ");
     visit(node.libraryName);
     _writer.print(';');
     return null;
   }
+
   Object visitPostfixExpression(PostfixExpression node) {
     visit(node.operand);
     _writer.print(node.operator.lexeme);
     return null;
   }
+
   Object visitPrefixedIdentifier(PrefixedIdentifier node) {
     visit(node.prefix);
     _writer.print('.');
     visit(node.identifier);
     return null;
   }
+
   Object visitPrefixExpression(PrefixExpression node) {
     _writer.print(node.operator.lexeme);
     visit(node.operand);
     return null;
   }
+
   Object visitPropertyAccess(PropertyAccess node) {
     if (node.isCascaded) {
       _writer.print("..");
     } else {
       visit(node.target);
       _writer.print('.');
     }
     visit(node.propertyName);
     return null;
   }
+
   Object visitRedirectingConstructorInvocation(RedirectingConstructorInvocation node) {
     _writer.print("this");
     visit3(".", node.constructorName);
     visit(node.argumentList);
     return null;
   }
+
   Object visitRethrowExpression(RethrowExpression node) {
     _writer.print("rethrow");
     return null;
   }
+
   Object visitReturnStatement(ReturnStatement node) {
     Expression expression = node.expression;
     if (expression == null) {
       _writer.print("return;");
     } else {
       _writer.print("return ");
       expression.accept(this);
       _writer.print(";");
     }
     return null;
   }
+
   Object visitScriptTag(ScriptTag node) {
     _writer.print(node.scriptTag.lexeme);
     return null;
   }
+
   Object visitShowCombinator(ShowCombinator node) {
     _writer.print("show ");
     visitList2(node.shownNames, ", ");
     return null;
   }
+
   Object visitSimpleFormalParameter(SimpleFormalParameter node) {
     visit5(node.keyword, " ");
     visit2(node.type, " ");
     visit(node.identifier);
     return null;
   }
+
   Object visitSimpleIdentifier(SimpleIdentifier node) {
     _writer.print(node.token.lexeme);
     return null;
   }
+
   Object visitSimpleStringLiteral(SimpleStringLiteral node) {
     _writer.print(node.literal.lexeme);
     return null;
   }
+
   Object visitStringInterpolation(StringInterpolation node) {
     visitList(node.elements);
     return null;
   }
+
   Object visitSuperConstructorInvocation(SuperConstructorInvocation node) {
     _writer.print("super");
     visit3(".", node.constructorName);
     visit(node.argumentList);
     return null;
   }
+
   Object visitSuperExpression(SuperExpression node) {
     _writer.print("super");
     return null;
   }
+
   Object visitSwitchCase(SwitchCase node) {
     visitList3(node.labels, " ", " ");
     _writer.print("case ");
     visit(node.expression);
     _writer.print(": ");
     visitList2(node.statements, " ");
     return null;
   }
+
   Object visitSwitchDefault(SwitchDefault node) {
     visitList3(node.labels, " ", " ");
     _writer.print("default: ");
     visitList2(node.statements, " ");
     return null;
   }
+
   Object visitSwitchStatement(SwitchStatement node) {
     _writer.print("switch (");
     visit(node.expression);
     _writer.print(") {");
     visitList2(node.members, " ");
     _writer.print("}");
     return null;
   }
+
   Object visitSymbolLiteral(SymbolLiteral node) {
     _writer.print("#");
     List<Token> components = node.components;
     for (int i = 0; i < components.length; i++) {
       if (i > 0) {
         _writer.print(".");
       }
       _writer.print(components[i].lexeme);
     }
     return null;
   }
+
   Object visitThisExpression(ThisExpression node) {
     _writer.print("this");
     return null;
   }
+
   Object visitThrowExpression(ThrowExpression node) {
     _writer.print("throw ");
     visit(node.expression);
     return null;
   }
+
   Object visitTopLevelVariableDeclaration(TopLevelVariableDeclaration node) {
     visit2(node.variables, ";");
     return null;
   }
+
   Object visitTryStatement(TryStatement node) {
     _writer.print("try ");
     visit(node.body);
     visitList4(" ", node.catchClauses, " ");
     visit3(" finally ", node.finallyBlock);
     return null;
   }
+
   Object visitTypeArgumentList(TypeArgumentList node) {
     _writer.print('<');
     visitList2(node.arguments, ", ");
     _writer.print('>');
     return null;
   }
+
   Object visitTypeName(TypeName node) {
     visit(node.name);
     visit(node.typeArguments);
     return null;
   }
+
   Object visitTypeParameter(TypeParameter node) {
     visit(node.name);
     visit3(" extends ", node.bound);
     return null;
   }
+
   Object visitTypeParameterList(TypeParameterList node) {
     _writer.print('<');
     visitList2(node.typeParameters, ", ");
     _writer.print('>');
     return null;
   }
+
   Object visitVariableDeclaration(VariableDeclaration node) {
     visit(node.name);
     visit3(" = ", node.initializer);
     return null;
   }
+
   Object visitVariableDeclarationList(VariableDeclarationList node) {
     visit5(node.keyword, " ");
     visit2(node.type, " ");
     visitList2(node.variables, ", ");
     return null;
   }
+
   Object visitVariableDeclarationStatement(VariableDeclarationStatement node) {
     visit(node.variables);
     _writer.print(";");
     return null;
   }
+
   Object visitWhileStatement(WhileStatement node) {
     _writer.print("while (");
     visit(node.condition);
     _writer.print(") ");
     visit(node.body);
     return null;
   }
+
   Object visitWithClause(WithClause node) {
     _writer.print("with ");
     visitList2(node.mixinTypes, ", ");
     return null;
   }
 
   /**
    * Safely visit the given node.
    *
    * @param node the node to be visited
@@ skipping 121 matching lines @@
         for (int i = 0; i < size; i++) {
           if (i > 0) {
             _writer.print(separator);
           }
           nodes[i].accept(this);
         }
       }
     }
   }
 }
+
 /**
  * Instances of the class `UnifyingASTVisitor` implement an AST visitor that will recursively
  * visit all of the nodes in an AST structure (like instances of the class
  * [RecursiveASTVisitor]). In addition, every node will also be visited by using a single
  * unified [visitNode] method.
  *
  * Subclasses that override a visit method must either invoke the overridden visit method or
  * explicitly invoke the more general [visitNode] method. Failure to do so will
  * cause the children of the visited node to not be visited.
  *
  * @coverage dart.engine.ast
  */
 class UnifyingASTVisitor<R> implements ASTVisitor<R> {
   R visitAdjacentStrings(AdjacentStrings node) => visitNode(node);
+
   R visitAnnotation(Annotation node) => visitNode(node);
+
   R visitArgumentDefinitionTest(ArgumentDefinitionTest node) => visitNode(node);
+
   R visitArgumentList(ArgumentList node) => visitNode(node);
+
   R visitAsExpression(AsExpression node) => visitNode(node);
+
   R visitAssertStatement(AssertStatement node) => visitNode(node);
+
   R visitAssignmentExpression(AssignmentExpression node) => visitNode(node);
+
   R visitBinaryExpression(BinaryExpression node) => visitNode(node);
+
   R visitBlock(Block node) => visitNode(node);
+
   R visitBlockFunctionBody(BlockFunctionBody node) => visitNode(node);
+
   R visitBooleanLiteral(BooleanLiteral node) => visitNode(node);
+
   R visitBreakStatement(BreakStatement node) => visitNode(node);
+
   R visitCascadeExpression(CascadeExpression node) => visitNode(node);
+
   R visitCatchClause(CatchClause node) => visitNode(node);
+
   R visitClassDeclaration(ClassDeclaration node) => visitNode(node);
+
   R visitClassTypeAlias(ClassTypeAlias node) => visitNode(node);
+
   R visitComment(Comment node) => visitNode(node);
+
   R visitCommentReference(CommentReference node) => visitNode(node);
+
   R visitCompilationUnit(CompilationUnit node) => visitNode(node);
+
   R visitConditionalExpression(ConditionalExpression node) => visitNode(node);
+
   R visitConstructorDeclaration(ConstructorDeclaration node) => visitNode(node);
+
   R visitConstructorFieldInitializer(ConstructorFieldInitializer node) => visitNode(node);
+
   R visitConstructorName(ConstructorName node) => visitNode(node);
+
   R visitContinueStatement(ContinueStatement node) => visitNode(node);
+
   R visitDeclaredIdentifier(DeclaredIdentifier node) => visitNode(node);
+
   R visitDefaultFormalParameter(DefaultFormalParameter node) => visitNode(node);
+
   R visitDoStatement(DoStatement node) => visitNode(node);
+
   R visitDoubleLiteral(DoubleLiteral node) => visitNode(node);
+
   R visitEmptyFunctionBody(EmptyFunctionBody node) => visitNode(node);
+
   R visitEmptyStatement(EmptyStatement node) => visitNode(node);
+
   R visitExportDirective(ExportDirective node) => visitNode(node);
+
   R visitExpressionFunctionBody(ExpressionFunctionBody node) => visitNode(node);
+
   R visitExpressionStatement(ExpressionStatement node) => visitNode(node);
+
   R visitExtendsClause(ExtendsClause node) => visitNode(node);
+
   R visitFieldDeclaration(FieldDeclaration node) => visitNode(node);
+
   R visitFieldFormalParameter(FieldFormalParameter node) => visitNode(node);
+
   R visitForEachStatement(ForEachStatement node) => visitNode(node);
+
   R visitFormalParameterList(FormalParameterList node) => visitNode(node);
+
   R visitForStatement(ForStatement node) => visitNode(node);
+
   R visitFunctionDeclaration(FunctionDeclaration node) => visitNode(node);
+
   R visitFunctionDeclarationStatement(FunctionDeclarationStatement node) => visitNode(node);
+
   R visitFunctionExpression(FunctionExpression node) => visitNode(node);
+
   R visitFunctionExpressionInvocation(FunctionExpressionInvocation node) => visitNode(node);
+
   R visitFunctionTypeAlias(FunctionTypeAlias node) => visitNode(node);
+
   R visitFunctionTypedFormalParameter(FunctionTypedFormalParameter node) => visitNode(node);
+
   R visitHideCombinator(HideCombinator node) => visitNode(node);
+
   R visitIfStatement(IfStatement node) => visitNode(node);
+
   R visitImplementsClause(ImplementsClause node) => visitNode(node);
+
   R visitImportDirective(ImportDirective node) => visitNode(node);
+
   R visitIndexExpression(IndexExpression node) => visitNode(node);
+
   R visitInstanceCreationExpression(InstanceCreationExpression node) => visitNode(node);
+
   R visitIntegerLiteral(IntegerLiteral node) => visitNode(node);
+
   R visitInterpolationExpression(InterpolationExpression node) => visitNode(node);
+
   R visitInterpolationString(InterpolationString node) => visitNode(node);
+
   R visitIsExpression(IsExpression node) => visitNode(node);
+
   R visitLabel(Label node) => visitNode(node);
+
   R visitLabeledStatement(LabeledStatement node) => visitNode(node);
+
   R visitLibraryDirective(LibraryDirective node) => visitNode(node);
+
   R visitLibraryIdentifier(LibraryIdentifier node) => visitNode(node);
+
   R visitListLiteral(ListLiteral node) => visitNode(node);
+
   R visitMapLiteral(MapLiteral node) => visitNode(node);
+
   R visitMapLiteralEntry(MapLiteralEntry node) => visitNode(node);
+
   R visitMethodDeclaration(MethodDeclaration node) => visitNode(node);
+
   R visitMethodInvocation(MethodInvocation node) => visitNode(node);
+
   R visitNamedExpression(NamedExpression node) => visitNode(node);
+
   R visitNativeClause(NativeClause node) => visitNode(node);
+
   R visitNativeFunctionBody(NativeFunctionBody node) => visitNode(node);
+
   R visitNode(ASTNode node) {
     node.visitChildren(this);
     return null;
   }
+
   R visitNullLiteral(NullLiteral node) => visitNode(node);
+
   R visitParenthesizedExpression(ParenthesizedExpression node) => visitNode(node);
+
   R visitPartDirective(PartDirective node) => visitNode(node);
+
   R visitPartOfDirective(PartOfDirective node) => visitNode(node);
+
   R visitPostfixExpression(PostfixExpression node) => visitNode(node);
+
   R visitPrefixedIdentifier(PrefixedIdentifier node) => visitNode(node);
+
   R visitPrefixExpression(PrefixExpression node) => visitNode(node);
+
   R visitPropertyAccess(PropertyAccess node) => visitNode(node);
+
   R visitRedirectingConstructorInvocation(RedirectingConstructorInvocation node) => visitNode(node);
+
   R visitRethrowExpression(RethrowExpression node) => visitNode(node);
+
   R visitReturnStatement(ReturnStatement node) => visitNode(node);
+
   R visitScriptTag(ScriptTag scriptTag) => visitNode(scriptTag);
+
   R visitShowCombinator(ShowCombinator node) => visitNode(node);
+
   R visitSimpleFormalParameter(SimpleFormalParameter node) => visitNode(node);
+
   R visitSimpleIdentifier(SimpleIdentifier node) => visitNode(node);
+
   R visitSimpleStringLiteral(SimpleStringLiteral node) => visitNode(node);
+
   R visitStringInterpolation(StringInterpolation node) => visitNode(node);
+
   R visitSuperConstructorInvocation(SuperConstructorInvocation node) => visitNode(node);
+
   R visitSuperExpression(SuperExpression node) => visitNode(node);
+
   R visitSwitchCase(SwitchCase node) => visitNode(node);
+
   R visitSwitchDefault(SwitchDefault node) => visitNode(node);
+
   R visitSwitchStatement(SwitchStatement node) => visitNode(node);
+
   R visitSymbolLiteral(SymbolLiteral node) => visitNode(node);
+
   R visitThisExpression(ThisExpression node) => visitNode(node);
+
   R visitThrowExpression(ThrowExpression node) => visitNode(node);
+
   R visitTopLevelVariableDeclaration(TopLevelVariableDeclaration node) => visitNode(node);
+
   R visitTryStatement(TryStatement node) => visitNode(node);
+
   R visitTypeArgumentList(TypeArgumentList node) => visitNode(node);
+
   R visitTypeName(TypeName node) => visitNode(node);
+
   R visitTypeParameter(TypeParameter node) => visitNode(node);
+
   R visitTypeParameterList(TypeParameterList node) => visitNode(node);
+
   R visitVariableDeclaration(VariableDeclaration node) => visitNode(node);
+
   R visitVariableDeclarationList(VariableDeclarationList node) => visitNode(node);
+
   R visitVariableDeclarationStatement(VariableDeclarationStatement node) => visitNode(node);
+
   R visitWhileStatement(WhileStatement node) => visitNode(node);
+
   R visitWithClause(WithClause node) => visitNode(node);
 }
+
 /**
  * Instances of the class `ASTCloner` implement an object that will clone any AST structure
  * that it visits. The cloner will only clone the structure, it will not preserve any resolution
  * results or properties associated with the nodes.
  */
 class ASTCloner implements ASTVisitor<ASTNode> {
   AdjacentStrings visitAdjacentStrings(AdjacentStrings node) => new AdjacentStrings.full(clone3(node.strings));
+
   Annotation visitAnnotation(Annotation node) => new Annotation.full(node.atSign, clone2(node.name), node.period, clone2(node.constructorName), clone2(node.arguments));
+
   ArgumentDefinitionTest visitArgumentDefinitionTest(ArgumentDefinitionTest node) => new ArgumentDefinitionTest.full(node.question, clone2(node.identifier));
+
   ArgumentList visitArgumentList(ArgumentList node) => new ArgumentList.full(node.leftParenthesis, clone3(node.arguments), node.rightParenthesis);
+
   AsExpression visitAsExpression(AsExpression node) => new AsExpression.full(clone2(node.expression), node.asOperator, clone2(node.type));
+
   ASTNode visitAssertStatement(AssertStatement node) => new AssertStatement.full(node.keyword, node.leftParenthesis, clone2(node.condition), node.rightParenthesis, node.semicolon);
+
   AssignmentExpression visitAssignmentExpression(AssignmentExpression node) => new AssignmentExpression.full(clone2(node.leftHandSide), node.operator, clone2(node.rightHandSide));
+
   BinaryExpression visitBinaryExpression(BinaryExpression node) => new BinaryExpression.full(clone2(node.leftOperand), node.operator, clone2(node.rightOperand));
+
   Block visitBlock(Block node) => new Block.full(node.leftBracket, clone3(node.statements), node.rightBracket);
+
   BlockFunctionBody visitBlockFunctionBody(BlockFunctionBody node) => new BlockFunctionBody.full(clone2(node.block));
+
   BooleanLiteral visitBooleanLiteral(BooleanLiteral node) => new BooleanLiteral.full(node.literal, node.value);
+
   BreakStatement visitBreakStatement(BreakStatement node) => new BreakStatement.full(node.keyword, clone2(node.label), node.semicolon);
+
   CascadeExpression visitCascadeExpression(CascadeExpression node) => new CascadeExpression.full(clone2(node.target), clone3(node.cascadeSections));
+
   CatchClause visitCatchClause(CatchClause node) => new CatchClause.full(node.onKeyword, clone2(node.exceptionType), node.catchKeyword, node.leftParenthesis, clone2(node.exceptionParameter), node.comma, clone2(node.stackTraceParameter), node.rightParenthesis, clone2(node.body));
+
   ClassDeclaration visitClassDeclaration(ClassDeclaration node) {
     ClassDeclaration copy = new ClassDeclaration.full(clone2(node.documentationComment), clone3(node.metadata), node.abstractKeyword, node.classKeyword, clone2(node.name), clone2(node.typeParameters), clone2(node.extendsClause), clone2(node.withClause), clone2(node.implementsClause), node.leftBracket, clone3(node.members), node.rightBracket);
     copy.nativeClause = clone2(node.nativeClause);
     return copy;
   }
+
   ClassTypeAlias visitClassTypeAlias(ClassTypeAlias node) => new ClassTypeAlias.full(clone2(node.documentationComment), clone3(node.metadata), node.keyword, clone2(node.name), clone2(node.typeParameters), node.equals, node.abstractKeyword, clone2(node.superclass), clone2(node.withClause), clone2(node.implementsClause), node.semicolon);
+
   Comment visitComment(Comment node) {
     if (node.isDocumentation) {
       return Comment.createDocumentationComment2(node.tokens, clone3(node.references));
     } else if (node.isBlock) {
       return Comment.createBlockComment(node.tokens);
     }
     return Comment.createEndOfLineComment(node.tokens);
   }
+
   CommentReference visitCommentReference(CommentReference node) => new CommentReference.full(node.newKeyword, clone2(node.identifier));
+
   CompilationUnit visitCompilationUnit(CompilationUnit node) {
     CompilationUnit clone = new CompilationUnit.full(node.beginToken, clone2(node.scriptTag), clone3(node.directives), clone3(node.declarations), node.endToken);
     clone.lineInfo = node.lineInfo;
     return clone;
   }
+
   ConditionalExpression visitConditionalExpression(ConditionalExpression node) => new ConditionalExpression.full(clone2(node.condition), node.question, clone2(node.thenExpression), node.colon, clone2(node.elseExpression));
+
   ConstructorDeclaration visitConstructorDeclaration(ConstructorDeclaration node) => new ConstructorDeclaration.full(clone2(node.documentationComment), clone3(node.metadata), node.externalKeyword, node.constKeyword, node.factoryKeyword, clone2(node.returnType), node.period, clone2(node.name), clone2(node.parameters), node.separator, clone3(node.initializers), clone2(node.redirectedConstructor), clone2(node.body));
+
   ConstructorFieldInitializer visitConstructorFieldInitializer(ConstructorFieldInitializer node) => new ConstructorFieldInitializer.full(node.keyword, node.period, clone2(node.fieldName), node.equals, clone2(node.expression));
+
   ConstructorName visitConstructorName(ConstructorName node) => new ConstructorName.full(clone2(node.type), node.period, clone2(node.name));
+
   ContinueStatement visitContinueStatement(ContinueStatement node) => new ContinueStatement.full(node.keyword, clone2(node.label), node.semicolon);
+
   DeclaredIdentifier visitDeclaredIdentifier(DeclaredIdentifier node) => new DeclaredIdentifier.full(clone2(node.documentationComment), clone3(node.metadata), node.keyword, clone2(node.type), clone2(node.identifier));
+
   DefaultFormalParameter visitDefaultFormalParameter(DefaultFormalParameter node) => new DefaultFormalParameter.full(clone2(node.parameter), node.kind, node.separator, clone2(node.defaultValue));
+
   DoStatement visitDoStatement(DoStatement node) => new DoStatement.full(node.doKeyword, clone2(node.body), node.whileKeyword, node.leftParenthesis, clone2(node.condition), node.rightParenthesis, node.semicolon);
+
   DoubleLiteral visitDoubleLiteral(DoubleLiteral node) => new DoubleLiteral.full(node.literal, node.value);
+
   EmptyFunctionBody visitEmptyFunctionBody(EmptyFunctionBody node) => new EmptyFunctionBody.full(node.semicolon);
+
   EmptyStatement visitEmptyStatement(EmptyStatement node) => new EmptyStatement.full(node.semicolon);
+
   ExportDirective visitExportDirective(ExportDirective node) => new ExportDirective.full(clone2(node.documentationComment), clone3(node.metadata), node.keyword, clone2(node.uri), clone3(node.combinators), node.semicolon);
+
   ExpressionFunctionBody visitExpressionFunctionBody(ExpressionFunctionBody node) => new ExpressionFunctionBody.full(node.functionDefinition, clone2(node.expression), node.semicolon);
+
   ExpressionStatement visitExpressionStatement(ExpressionStatement node) => new ExpressionStatement.full(clone2(node.expression), node.semicolon);
+
   ExtendsClause visitExtendsClause(ExtendsClause node) => new ExtendsClause.full(node.keyword, clone2(node.superclass));
+
   FieldDeclaration visitFieldDeclaration(FieldDeclaration node) => new FieldDeclaration.full(clone2(node.documentationComment), clone3(node.metadata), node.staticKeyword, clone2(node.fields), node.semicolon);
+
   FieldFormalParameter visitFieldFormalParameter(FieldFormalParameter node) => new FieldFormalParameter.full(clone2(node.documentationComment), clone3(node.metadata), node.keyword, clone2(node.type), node.thisToken, node.period, clone2(node.identifier), clone2(node.parameters));
+
   ForEachStatement visitForEachStatement(ForEachStatement node) {
     DeclaredIdentifier loopVariable = node.loopVariable;
     if (loopVariable == null) {
       return new ForEachStatement.con2_full(node.forKeyword, node.leftParenthesis, clone2(node.identifier), node.inKeyword, clone2(node.iterator), node.rightParenthesis, clone2(node.body));
     }
     return new ForEachStatement.con1_full(node.forKeyword, node.leftParenthesis, clone2(loopVariable), node.inKeyword, clone2(node.iterator), node.rightParenthesis, clone2(node.body));
   }
+
   FormalParameterList visitFormalParameterList(FormalParameterList node) => new FormalParameterList.full(node.leftParenthesis, clone3(node.parameters), node.leftDelimiter, node.rightDelimiter, node.rightParenthesis);
+
   ForStatement visitForStatement(ForStatement node) => new ForStatement.full(node.forKeyword, node.leftParenthesis, clone2(node.variables), clone2(node.initialization), node.leftSeparator, clone2(node.condition), node.rightSeparator, clone3(node.updaters), node.rightParenthesis, clone2(node.body));
+
   FunctionDeclaration visitFunctionDeclaration(FunctionDeclaration node) => new FunctionDeclaration.full(clone2(node.documentationComment), clone3(node.metadata), node.externalKeyword, clone2(node.returnType), node.propertyKeyword, clone2(node.name), clone2(node.functionExpression));
+
   FunctionDeclarationStatement visitFunctionDeclarationStatement(FunctionDeclarationStatement node) => new FunctionDeclarationStatement.full(clone2(node.functionDeclaration));
+
   FunctionExpression visitFunctionExpression(FunctionExpression node) => new FunctionExpression.full(clone2(node.parameters), clone2(node.body));
+
   FunctionExpressionInvocation visitFunctionExpressionInvocation(FunctionExpressionInvocation node) => new FunctionExpressionInvocation.full(clone2(node.function), clone2(node.argumentList));
+
   FunctionTypeAlias visitFunctionTypeAlias(FunctionTypeAlias node) => new FunctionTypeAlias.full(clone2(node.documentationComment), clone3(node.metadata), node.keyword, clone2(node.returnType), clone2(node.name), clone2(node.typeParameters), clone2(node.parameters), node.semicolon);
+
   FunctionTypedFormalParameter visitFunctionTypedFormalParameter(FunctionTypedFormalParameter node) => new FunctionTypedFormalParameter.full(clone2(node.documentationComment), clone3(node.metadata), clone2(node.returnType), clone2(node.identifier), clone2(node.parameters));
+
   HideCombinator visitHideCombinator(HideCombinator node) => new HideCombinator.full(node.keyword, clone3(node.hiddenNames));
+
   IfStatement visitIfStatement(IfStatement node) => new IfStatement.full(node.ifKeyword, node.leftParenthesis, clone2(node.condition), node.rightParenthesis, clone2(node.thenStatement), node.elseKeyword, clone2(node.elseStatement));
+
   ImplementsClause visitImplementsClause(ImplementsClause node) => new ImplementsClause.full(node.keyword, clone3(node.interfaces));
+
   ImportDirective visitImportDirective(ImportDirective node) => new ImportDirective.full(clone2(node.documentationComment), clone3(node.metadata), node.keyword, clone2(node.uri), node.asToken, clone2(node.prefix), clone3(node.combinators), node.semicolon);
+
   IndexExpression visitIndexExpression(IndexExpression node) {
     Token period = node.period;
     if (period == null) {
       return new IndexExpression.forTarget_full(clone2(node.target), node.leftBracket, clone2(node.index), node.rightBracket);
     } else {
       return new IndexExpression.forCascade_full(period, node.leftBracket, clone2(node.index), node.rightBracket);
     }
   }
+
   InstanceCreationExpression visitInstanceCreationExpression(InstanceCreationExpression node) => new InstanceCreationExpression.full(node.keyword, clone2(node.constructorName), clone2(node.argumentList));
+
   IntegerLiteral visitIntegerLiteral(IntegerLiteral node) => new IntegerLiteral.full(node.literal, node.value);
+
   InterpolationExpression visitInterpolationExpression(InterpolationExpression node) => new InterpolationExpression.full(node.leftBracket, clone2(node.expression), node.rightBracket);
+
   InterpolationString visitInterpolationString(InterpolationString node) => new InterpolationString.full(node.contents, node.value);
+
   IsExpression visitIsExpression(IsExpression node) => new IsExpression.full(clone2(node.expression), node.isOperator, node.notOperator, clone2(node.type));
+
   Label visitLabel(Label node) => new Label.full(clone2(node.label), node.colon);
+
   LabeledStatement visitLabeledStatement(LabeledStatement node) => new LabeledStatement.full(clone3(node.labels), clone2(node.statement));
+
   LibraryDirective visitLibraryDirective(LibraryDirective node) => new LibraryDirective.full(clone2(node.documentationComment), clone3(node.metadata), node.libraryToken, clone2(node.name), node.semicolon);
+
   LibraryIdentifier visitLibraryIdentifier(LibraryIdentifier node) => new LibraryIdentifier.full(clone3(node.components));
+
   ListLiteral visitListLiteral(ListLiteral node) => new ListLiteral.full(node.constKeyword, clone2(node.typeArguments), node.leftBracket, clone3(node.elements), node.rightBracket);
+
   MapLiteral visitMapLiteral(MapLiteral node) => new MapLiteral.full(node.constKeyword, clone2(node.typeArguments), node.leftBracket, clone3(node.entries), node.rightBracket);
+
   MapLiteralEntry visitMapLiteralEntry(MapLiteralEntry node) => new MapLiteralEntry.full(clone2(node.key), node.separator, clone2(node.value));
+
   MethodDeclaration visitMethodDeclaration(MethodDeclaration node) => new MethodDeclaration.full(clone2(node.documentationComment), clone3(node.metadata), node.externalKeyword, node.modifierKeyword, clone2(node.returnType), node.propertyKeyword, node.operatorKeyword, clone2(node.name), clone2(node.parameters), clone2(node.body));
+
   MethodInvocation visitMethodInvocation(MethodInvocation node) => new MethodInvocation.full(clone2(node.target), node.period, clone2(node.methodName), clone2(node.argumentList));
+
   NamedExpression visitNamedExpression(NamedExpression node) => new NamedExpression.full(clone2(node.name), clone2(node.expression));
+
   ASTNode visitNativeClause(NativeClause node) => new NativeClause.full(node.keyword, clone2(node.name));
+
   NativeFunctionBody visitNativeFunctionBody(NativeFunctionBody node) => new NativeFunctionBody.full(node.nativeToken, clone2(node.stringLiteral), node.semicolon);
+
   NullLiteral visitNullLiteral(NullLiteral node) => new NullLiteral.full(node.literal);
+
   ParenthesizedExpression visitParenthesizedExpression(ParenthesizedExpression node) => new ParenthesizedExpression.full(node.leftParenthesis, clone2(node.expression), node.rightParenthesis);
+
   PartDirective visitPartDirective(PartDirective node) => new PartDirective.full(clone2(node.documentationComment), clone3(node.metadata), node.partToken, clone2(node.uri), node.semicolon);
+
   PartOfDirective visitPartOfDirective(PartOfDirective node) => new PartOfDirective.full(clone2(node.documentationComment), clone3(node.metadata), node.partToken, node.ofToken, clone2(node.libraryName), node.semicolon);
+
   PostfixExpression visitPostfixExpression(PostfixExpression node) => new PostfixExpression.full(clone2(node.operand), node.operator);
+
   PrefixedIdentifier visitPrefixedIdentifier(PrefixedIdentifier node) => new PrefixedIdentifier.full(clone2(node.prefix), node.period, clone2(node.identifier));
+
   PrefixExpression visitPrefixExpression(PrefixExpression node) => new PrefixExpression.full(node.operator, clone2(node.operand));
+
   PropertyAccess visitPropertyAccess(PropertyAccess node) => new PropertyAccess.full(clone2(node.target), node.operator, clone2(node.propertyName));
+
   RedirectingConstructorInvocation visitRedirectingConstructorInvocation(RedirectingConstructorInvocation node) => new RedirectingConstructorInvocation.full(node.keyword, node.period, clone2(node.constructorName), clone2(node.argumentList));
+
   RethrowExpression visitRethrowExpression(RethrowExpression node) => new RethrowExpression.full(node.keyword);
+
   ReturnStatement visitReturnStatement(ReturnStatement node) => new ReturnStatement.full(node.keyword, clone2(node.expression), node.semicolon);
+
   ScriptTag visitScriptTag(ScriptTag node) => new ScriptTag.full(node.scriptTag);
+
   ShowCombinator visitShowCombinator(ShowCombinator node) => new ShowCombinator.full(node.keyword, clone3(node.shownNames));
+
   SimpleFormalParameter visitSimpleFormalParameter(SimpleFormalParameter node) => new SimpleFormalParameter.full(clone2(node.documentationComment), clone3(node.metadata), node.keyword, clone2(node.type), clone2(node.identifier));
+
   SimpleIdentifier visitSimpleIdentifier(SimpleIdentifier node) => new SimpleIdentifier.full(node.token);
+
   SimpleStringLiteral visitSimpleStringLiteral(SimpleStringLiteral node) => new SimpleStringLiteral.full(node.literal, node.value);
+
   StringInterpolation visitStringInterpolation(StringInterpolation node) => new StringInterpolation.full(clone3(node.elements));
+
   SuperConstructorInvocation visitSuperConstructorInvocation(SuperConstructorInvocation node) => new SuperConstructorInvocation.full(node.keyword, node.period, clone2(node.constructorName), clone2(node.argumentList));
+
   SuperExpression visitSuperExpression(SuperExpression node) => new SuperExpression.full(node.keyword);
+
   SwitchCase visitSwitchCase(SwitchCase node) => new SwitchCase.full(clone3(node.labels), node.keyword, clone2(node.expression), node.colon, clone3(node.statements));
+
   SwitchDefault visitSwitchDefault(SwitchDefault node) => new SwitchDefault.full(clone3(node.labels), node.keyword, node.colon, clone3(node.statements));
+
   SwitchStatement visitSwitchStatement(SwitchStatement node) => new SwitchStatement.full(node.keyword, node.leftParenthesis, clone2(node.expression), node.rightParenthesis, node.leftBracket, clone3(node.members), node.rightBracket);
+
   ASTNode visitSymbolLiteral(SymbolLiteral node) => new SymbolLiteral.full(node.poundSign, node.components);
+
   ThisExpression visitThisExpression(ThisExpression node) => new ThisExpression.full(node.keyword);
+
   ThrowExpression visitThrowExpression(ThrowExpression node) => new ThrowExpression.full(node.keyword, clone2(node.expression));
+
   TopLevelVariableDeclaration visitTopLevelVariableDeclaration(TopLevelVariableDeclaration node) => new TopLevelVariableDeclaration.full(clone2(node.documentationComment), clone3(node.metadata), clone2(node.variables), node.semicolon);
+
   TryStatement visitTryStatement(TryStatement node) => new TryStatement.full(node.tryKeyword, clone2(node.body), clone3(node.catchClauses), node.finallyKeyword, clone2(node.finallyBlock));
+
   TypeArgumentList visitTypeArgumentList(TypeArgumentList node) => new TypeArgumentList.full(node.leftBracket, clone3(node.arguments), node.rightBracket);
+
   TypeName visitTypeName(TypeName node) => new TypeName.full(clone2(node.name), clone2(node.typeArguments));
+
   TypeParameter visitTypeParameter(TypeParameter node) => new TypeParameter.full(clone2(node.documentationComment), clone3(node.metadata), clone2(node.name), node.keyword, clone2(node.bound));
+
   TypeParameterList visitTypeParameterList(TypeParameterList node) => new TypeParameterList.full(node.leftBracket, clone3(node.typeParameters), node.rightBracket);
+
   VariableDeclaration visitVariableDeclaration(VariableDeclaration node) => new VariableDeclaration.full(null, clone3(node.metadata), clone2(node.name), node.equals, clone2(node.initializer));
+
   VariableDeclarationList visitVariableDeclarationList(VariableDeclarationList node) => new VariableDeclarationList.full(null, clone3(node.metadata), node.keyword, clone2(node.type), clone3(node.variables));
+
   VariableDeclarationStatement visitVariableDeclarationStatement(VariableDeclarationStatement node) => new VariableDeclarationStatement.full(clone2(node.variables), node.semicolon);
+
   WhileStatement visitWhileStatement(WhileStatement node) => new WhileStatement.full(node.keyword, node.leftParenthesis, clone2(node.condition), node.rightParenthesis, clone2(node.body));
+
   WithClause visitWithClause(WithClause node) => new WithClause.full(node.withKeyword, clone3(node.mixinTypes));
+
   ASTNode clone2(ASTNode node) {
     if (node == null) {
       return null;
     }
     return node.accept(this) as ASTNode;
   }
+
   List clone3(NodeList nodes) {
     List clonedNodes = new List();
     for (ASTNode node in nodes) {
       clonedNodes.add(node.accept(this) as ASTNode);
     }
     return clonedNodes;
   }
 }
+
 /**
  * Instances of the class `ASTComparator` compare the structure of two ASTNodes to see whether
  * they are equal.
  */
 class ASTComparator implements ASTVisitor<bool> {
-
   /**
    * Return `true` if the two AST nodes are equal.
    *
    * @param first the first node being compared
    * @param second the second node being compared
    * @return `true` if the two AST nodes are equal
    */
   static bool equals3(CompilationUnit first, CompilationUnit second) {
     ASTComparator comparator = new ASTComparator();
     return comparator.isEqual(first, second);
   }
 
   /**
    * The AST node with which the node being visited is to be compared. This is only valid at the
    * beginning of each visit method (until [isEqual] is invoked).
    */
   ASTNode _other;
+
   bool visitAdjacentStrings(AdjacentStrings node) {
     AdjacentStrings other = this._other as AdjacentStrings;
     return isEqual5(node.strings, other.strings);
   }
+
   bool visitAnnotation(Annotation node) {
     Annotation other = this._other as Annotation;
     return isEqual6(node.atSign, other.atSign) && isEqual(node.name, other.name) && isEqual6(node.period, other.period) && isEqual(node.constructorName, other.constructorName) && isEqual(node.arguments, other.arguments);
   }
+
   bool visitArgumentDefinitionTest(ArgumentDefinitionTest node) {
     ArgumentDefinitionTest other = this._other as ArgumentDefinitionTest;
     return isEqual6(node.question, other.question) && isEqual(node.identifier, other.identifier);
   }
+
   bool visitArgumentList(ArgumentList node) {
     ArgumentList other = this._other as ArgumentList;
     return isEqual6(node.leftParenthesis, other.leftParenthesis) && isEqual5(node.arguments, other.arguments) && isEqual6(node.rightParenthesis, other.rightParenthesis);
   }
+
   bool visitAsExpression(AsExpression node) {
     AsExpression other = this._other as AsExpression;
     return isEqual(node.expression, other.expression) && isEqual6(node.asOperator, other.asOperator) && isEqual(node.type, other.type);
   }
+
   bool visitAssertStatement(AssertStatement node) {
     AssertStatement other = this._other as AssertStatement;
     return isEqual6(node.keyword, other.keyword) && isEqual6(node.leftParenthesis, other.leftParenthesis) && isEqual(node.condition, other.condition) && isEqual6(node.rightParenthesis, other.rightParenthesis) && isEqual6(node.semicolon, other.semicolon);
   }
+
   bool visitAssignmentExpression(AssignmentExpression node) {
     AssignmentExpression other = this._other as AssignmentExpression;
     return isEqual(node.leftHandSide, other.leftHandSide) && isEqual6(node.operator, other.operator) && isEqual(node.rightHandSide, other.rightHandSide);
   }
+
   bool visitBinaryExpression(BinaryExpression node) {
     BinaryExpression other = this._other as BinaryExpression;
     return isEqual(node.leftOperand, other.leftOperand) && isEqual6(node.operator, other.operator) && isEqual(node.rightOperand, other.rightOperand);
   }
+
   bool visitBlock(Block node) {
     Block other = this._other as Block;
     return isEqual6(node.leftBracket, other.leftBracket) && isEqual5(node.statements, other.statements) && isEqual6(node.rightBracket, other.rightBracket);
   }
+
   bool visitBlockFunctionBody(BlockFunctionBody node) {
     BlockFunctionBody other = this._other as BlockFunctionBody;
     return isEqual(node.block, other.block);
   }
+
   bool visitBooleanLiteral(BooleanLiteral node) {
     BooleanLiteral other = this._other as BooleanLiteral;
     return isEqual6(node.literal, other.literal) && identical(node.value, other.value);
   }
+
   bool visitBreakStatement(BreakStatement node) {
     BreakStatement other = this._other as BreakStatement;
     return isEqual6(node.keyword, other.keyword) && isEqual(node.label, other.label) && isEqual6(node.semicolon, other.semicolon);
   }
+
   bool visitCascadeExpression(CascadeExpression node) {
     CascadeExpression other = this._other as CascadeExpression;
     return isEqual(node.target, other.target) && isEqual5(node.cascadeSections, other.cascadeSections);
   }
+
   bool visitCatchClause(CatchClause node) {
     CatchClause other = this._other as CatchClause;
     return isEqual6(node.onKeyword, other.onKeyword) && isEqual(node.exceptionType, other.exceptionType) && isEqual6(node.catchKeyword, other.catchKeyword) && isEqual6(node.leftParenthesis, other.leftParenthesis) && isEqual(node.exceptionParameter, other.exceptionParameter) && isEqual6(node.comma, other.comma) && isEqual(node.stackTraceParameter, other.stackTraceParameter) && isEqual6(node.rightParenthesis, other.rightParenthesis) && isEqual(node.body, other.body);
   }
+
   bool visitClassDeclaration(ClassDeclaration node) {
     ClassDeclaration other = this._other as ClassDeclaration;
     return isEqual(node.documentationComment, other.documentationComment) && isEqual5(node.metadata, other.metadata) && isEqual6(node.abstractKeyword, other.abstractKeyword) && isEqual6(node.classKeyword, other.classKeyword) && isEqual(node.name, other.name) && isEqual(node.typeParameters, other.typeParameters) && isEqual(node.extendsClause, other.extendsClause) && isEqual(node.withClause, other.withClause) && isEqual(node.implementsClause, other.implementsClause) && isEqual6(node.leftBracket, other.leftBracket) && isEqual5(node.members, other.members) && isEqual6(node.rightBracket, other.rightBracket);
   }
+
   bool visitClassTypeAlias(ClassTypeAlias node) {
     ClassTypeAlias other = this._other as ClassTypeAlias;
     return isEqual(node.documentationComment, other.documentationComment) && isEqual5(node.metadata, other.metadata) && isEqual6(node.keyword, other.keyword) && isEqual(node.name, other.name) && isEqual(node.typeParameters, other.typeParameters) && isEqual6(node.equals, other.equals) && isEqual6(node.abstractKeyword, other.abstractKeyword) && isEqual(node.superclass, other.superclass) && isEqual(node.withClause, other.withClause) && isEqual(node.implementsClause, other.implementsClause) && isEqual6(node.semicolon, other.semicolon);
   }
+
   bool visitComment(Comment node) {
     Comment other = this._other as Comment;
     return isEqual5(node.references, other.references);
   }
+
   bool visitCommentReference(CommentReference node) {
     CommentReference other = this._other as CommentReference;
     return isEqual6(node.newKeyword, other.newKeyword) && isEqual(node.identifier, other.identifier);
   }
+
   bool visitCompilationUnit(CompilationUnit node) {
     CompilationUnit other = this._other as CompilationUnit;
     return isEqual6(node.beginToken, other.beginToken) && isEqual(node.scriptTag, other.scriptTag) && isEqual5(node.directives, other.directives) && isEqual5(node.declarations, other.declarations) && isEqual6(node.endToken, other.endToken);
   }
+
   bool visitConditionalExpression(ConditionalExpression node) {
     ConditionalExpression other = this._other as ConditionalExpression;
     return isEqual(node.condition, other.condition) && isEqual6(node.question, other.question) && isEqual(node.thenExpression, other.thenExpression) && isEqual6(node.colon, other.colon) && isEqual(node.elseExpression, other.elseExpression);
   }
+
   bool visitConstructorDeclaration(ConstructorDeclaration node) {
     ConstructorDeclaration other = this._other as ConstructorDeclaration;
     return isEqual(node.documentationComment, other.documentationComment) && isEqual5(node.metadata, other.metadata) && isEqual6(node.externalKeyword, other.externalKeyword) && isEqual6(node.constKeyword, other.constKeyword) && isEqual6(node.factoryKeyword, other.factoryKeyword) && isEqual(node.returnType, other.returnType) && isEqual6(node.period, other.period) && isEqual(node.name, other.name) && isEqual(node.parameters, other.parameters) && isEqual6(node.separator, other.separator) && isEqual5(node.initializers, other.initializers) && isEqual(node.redirectedConstructor, other.redirectedConstructor) && isEqual(node.body, other.body);
   }
+
   bool visitConstructorFieldInitializer(ConstructorFieldInitializer node) {
     ConstructorFieldInitializer other = this._other as ConstructorFieldInitializer;
     return isEqual6(node.keyword, other.keyword) && isEqual6(node.period, other.period) && isEqual(node.fieldName, other.fieldName) && isEqual6(node.equals, other.equals) && isEqual(node.expression, other.expression);
   }
+
   bool visitConstructorName(ConstructorName node) {
     ConstructorName other = this._other as ConstructorName;
     return isEqual(node.type, other.type) && isEqual6(node.period, other.period) && isEqual(node.name, other.name);
   }
+
   bool visitContinueStatement(ContinueStatement node) {
     ContinueStatement other = this._other as ContinueStatement;
     return isEqual6(node.keyword, other.keyword) && isEqual(node.label, other.label) && isEqual6(node.semicolon, other.semicolon);
   }
+
   bool visitDeclaredIdentifier(DeclaredIdentifier node) {
     DeclaredIdentifier other = this._other as DeclaredIdentifier;
     return isEqual(node.documentationComment, other.documentationComment) && isEqual5(node.metadata, other.metadata) && isEqual6(node.keyword, other.keyword) && isEqual(node.type, other.type) && isEqual(node.identifier, other.identifier);
   }
+
   bool visitDefaultFormalParameter(DefaultFormalParameter node) {
     DefaultFormalParameter other = this._other as DefaultFormalParameter;
     return isEqual(node.parameter, other.parameter) && identical(node.kind, other.kind) && isEqual6(node.separator, other.separator) && isEqual(node.defaultValue, other.defaultValue);
   }
+
   bool visitDoStatement(DoStatement node) {
     DoStatement other = this._other as DoStatement;
     return isEqual6(node.doKeyword, other.doKeyword) && isEqual(node.body, other.body) && isEqual6(node.whileKeyword, other.whileKeyword) && isEqual6(node.leftParenthesis, other.leftParenthesis) && isEqual(node.condition, other.condition) && isEqual6(node.rightParenthesis, other.rightParenthesis) && isEqual6(node.semicolon, other.semicolon);
   }
+
   bool visitDoubleLiteral(DoubleLiteral node) {
     DoubleLiteral other = this._other as DoubleLiteral;
     return isEqual6(node.literal, other.literal) && node.value == other.value;
   }
+
   bool visitEmptyFunctionBody(EmptyFunctionBody node) {
     EmptyFunctionBody other = this._other as EmptyFunctionBody;
     return isEqual6(node.semicolon, other.semicolon);
   }
+
   bool visitEmptyStatement(EmptyStatement node) {
     EmptyStatement other = this._other as EmptyStatement;
     return isEqual6(node.semicolon, other.semicolon);
   }
+
   bool visitExportDirective(ExportDirective node) {
     ExportDirective other = this._other as ExportDirective;
     return isEqual(node.documentationComment, other.documentationComment) && isEqual5(node.metadata, other.metadata) && isEqual6(node.keyword, other.keyword) && isEqual(node.uri, other.uri) && isEqual5(node.combinators, other.combinators) && isEqual6(node.semicolon, other.semicolon);
   }
+
   bool visitExpressionFunctionBody(ExpressionFunctionBody node) {
     ExpressionFunctionBody other = this._other as ExpressionFunctionBody;
     return isEqual6(node.functionDefinition, other.functionDefinition) && isEqual(node.expression, other.expression) && isEqual6(node.semicolon, other.semicolon);
   }
+
   bool visitExpressionStatement(ExpressionStatement node) {
     ExpressionStatement other = this._other as ExpressionStatement;
     return isEqual(node.expression, other.expression) && isEqual6(node.semicolon, other.semicolon);
   }
+
   bool visitExtendsClause(ExtendsClause node) {
     ExtendsClause other = this._other as ExtendsClause;
     return isEqual6(node.keyword, other.keyword) && isEqual(node.superclass, other.superclass);
   }
+
   bool visitFieldDeclaration(FieldDeclaration node) {
     FieldDeclaration other = this._other as FieldDeclaration;
     return isEqual(node.documentationComment, other.documentationComment) && isEqual5(node.metadata, other.metadata) && isEqual6(node.staticKeyword, other.staticKeyword) && isEqual(node.fields, other.fields) && isEqual6(node.semicolon, other.semicolon);
   }
+
   bool visitFieldFormalParameter(FieldFormalParameter node) {
     FieldFormalParameter other = this._other as FieldFormalParameter;
     return isEqual(node.documentationComment, other.documentationComment) && isEqual5(node.metadata, other.metadata) && isEqual6(node.keyword, other.keyword) && isEqual(node.type, other.type) && isEqual6(node.thisToken, other.thisToken) && isEqual6(node.period, other.period) && isEqual(node.identifier, other.identifier);
   }
+
   bool visitForEachStatement(ForEachStatement node) {
     ForEachStatement other = this._other as ForEachStatement;
     return isEqual6(node.forKeyword, other.forKeyword) && isEqual6(node.leftParenthesis, other.leftParenthesis) && isEqual(node.loopVariable, other.loopVariable) && isEqual6(node.inKeyword, other.inKeyword) && isEqual(node.iterator, other.iterator) && isEqual6(node.rightParenthesis, other.rightParenthesis) && isEqual(node.body, other.body);
   }
+
   bool visitFormalParameterList(FormalParameterList node) {
     FormalParameterList other = this._other as FormalParameterList;
     return isEqual6(node.leftParenthesis, other.leftParenthesis) && isEqual5(node.parameters, other.parameters) && isEqual6(node.leftDelimiter, other.leftDelimiter) && isEqual6(node.rightDelimiter, other.rightDelimiter) && isEqual6(node.rightParenthesis, other.rightParenthesis);
   }
+
   bool visitForStatement(ForStatement node) {
     ForStatement other = this._other as ForStatement;
     return isEqual6(node.forKeyword, other.forKeyword) && isEqual6(node.leftParenthesis, other.leftParenthesis) && isEqual(node.variables, other.variables) && isEqual(node.initialization, other.initialization) && isEqual6(node.leftSeparator, other.leftSeparator) && isEqual(node.condition, other.condition) && isEqual6(node.rightSeparator, other.rightSeparator) && isEqual5(node.updaters, other.updaters) && isEqual6(node.rightParenthesis, other.rightParenthesis) && isEqual(node.body, other.body);
   }
+
   bool visitFunctionDeclaration(FunctionDeclaration node) {
     FunctionDeclaration other = this._other as FunctionDeclaration;
     return isEqual(node.documentationComment, other.documentationComment) && isEqual5(node.metadata, other.metadata) && isEqual6(node.externalKeyword, other.externalKeyword) && isEqual(node.returnType, other.returnType) && isEqual6(node.propertyKeyword, other.propertyKeyword) && isEqual(node.name, other.name) && isEqual(node.functionExpression, other.functionExpression);
   }
+
   bool visitFunctionDeclarationStatement(FunctionDeclarationStatement node) {
     FunctionDeclarationStatement other = this._other as FunctionDeclarationStatement;
     return isEqual(node.functionDeclaration, other.functionDeclaration);
   }
+
   bool visitFunctionExpression(FunctionExpression node) {
     FunctionExpression other = this._other as FunctionExpression;
     return isEqual(node.parameters, other.parameters) && isEqual(node.body, other.body);
   }
+
   bool visitFunctionExpressionInvocation(FunctionExpressionInvocation node) {
     FunctionExpressionInvocation other = this._other as FunctionExpressionInvocation;
     return isEqual(node.function, other.function) && isEqual(node.argumentList, other.argumentList);
   }
+
   bool visitFunctionTypeAlias(FunctionTypeAlias node) {
     FunctionTypeAlias other = this._other as FunctionTypeAlias;
     return isEqual(node.documentationComment, other.documentationComment) && isEqual5(node.metadata, other.metadata) && isEqual6(node.keyword, other.keyword) && isEqual(node.returnType, other.returnType) && isEqual(node.name, other.name) && isEqual(node.typeParameters, other.typeParameters) && isEqual(node.parameters, other.parameters) && isEqual6(node.semicolon, other.semicolon);
   }
+
   bool visitFunctionTypedFormalParameter(FunctionTypedFormalParameter node) {
     FunctionTypedFormalParameter other = this._other as FunctionTypedFormalParameter;
     return isEqual(node.documentationComment, other.documentationComment) && isEqual5(node.metadata, other.metadata) && isEqual(node.returnType, other.returnType) && isEqual(node.identifier, other.identifier) && isEqual(node.parameters, other.parameters);
   }
+
   bool visitHideCombinator(HideCombinator node) {
     HideCombinator other = this._other as HideCombinator;
     return isEqual6(node.keyword, other.keyword) && isEqual5(node.hiddenNames, other.hiddenNames);
   }
+
   bool visitIfStatement(IfStatement node) {
     IfStatement other = this._other as IfStatement;
     return isEqual6(node.ifKeyword, other.ifKeyword) && isEqual6(node.leftParenthesis, other.leftParenthesis) && isEqual(node.condition, other.condition) && isEqual6(node.rightParenthesis, other.rightParenthesis) && isEqual(node.thenStatement, other.thenStatement) && isEqual6(node.elseKeyword, other.elseKeyword) && isEqual(node.elseStatement, other.elseStatement);
   }
+
   bool visitImplementsClause(ImplementsClause node) {
     ImplementsClause other = this._other as ImplementsClause;
     return isEqual6(node.keyword, other.keyword) && isEqual5(node.interfaces, other.interfaces);
   }
+
   bool visitImportDirective(ImportDirective node) {
     ImportDirective other = this._other as ImportDirective;
     return isEqual(node.documentationComment, other.documentationComment) && isEqual5(node.metadata, other.metadata) && isEqual6(node.keyword, other.keyword) && isEqual(node.uri, other.uri) && isEqual6(node.asToken, other.asToken) && isEqual(node.prefix, other.prefix) && isEqual5(node.combinators, other.combinators) && isEqual6(node.semicolon, other.semicolon);
   }
+
   bool visitIndexExpression(IndexExpression node) {
     IndexExpression other = this._other as IndexExpression;
     return isEqual(node.target, other.target) && isEqual6(node.leftBracket, other.leftBracket) && isEqual(node.index, other.index) && isEqual6(node.rightBracket, other.rightBracket);
   }
+
   bool visitInstanceCreationExpression(InstanceCreationExpression node) {
     InstanceCreationExpression other = this._other as InstanceCreationExpression;
     return isEqual6(node.keyword, other.keyword) && isEqual(node.constructorName, other.constructorName) && isEqual(node.argumentList, other.argumentList);
   }
+
   bool visitIntegerLiteral(IntegerLiteral node) {
     IntegerLiteral other = this._other as IntegerLiteral;
     return isEqual6(node.literal, other.literal) && identical(node.value, other.value);
   }
+
   bool visitInterpolationExpression(InterpolationExpression node) {
     InterpolationExpression other = this._other as InterpolationExpression;
     return isEqual6(node.leftBracket, other.leftBracket) && isEqual(node.expression, other.expression) && isEqual6(node.rightBracket, other.rightBracket);
   }
+
   bool visitInterpolationString(InterpolationString node) {
     InterpolationString other = this._other as InterpolationString;
     return isEqual6(node.contents, other.contents) && node.value == other.value;
   }
+
   bool visitIsExpression(IsExpression node) {
     IsExpression other = this._other as IsExpression;
     return isEqual(node.expression, other.expression) && isEqual6(node.isOperator, other.isOperator) && isEqual6(node.notOperator, other.notOperator) && isEqual(node.type, other.type);
   }
+
   bool visitLabel(Label node) {
     Label other = this._other as Label;
     return isEqual(node.label, other.label) && isEqual6(node.colon, other.colon);
   }
+
   bool visitLabeledStatement(LabeledStatement node) {
     LabeledStatement other = this._other as LabeledStatement;
     return isEqual5(node.labels, other.labels) && isEqual(node.statement, other.statement);
   }
+
   bool visitLibraryDirective(LibraryDirective node) {
     LibraryDirective other = this._other as LibraryDirective;
     return isEqual(node.documentationComment, other.documentationComment) && isEqual5(node.metadata, other.metadata) && isEqual6(node.libraryToken, other.libraryToken) && isEqual(node.name, other.name) && isEqual6(node.semicolon, other.semicolon);
   }
+
   bool visitLibraryIdentifier(LibraryIdentifier node) {
     LibraryIdentifier other = this._other as LibraryIdentifier;
     return isEqual5(node.components, other.components);
   }
+
   bool visitListLiteral(ListLiteral node) {
     ListLiteral other = this._other as ListLiteral;
     return isEqual6(node.constKeyword, other.constKeyword) && isEqual(node.typeArguments, other.typeArguments) && isEqual6(node.leftBracket, other.leftBracket) && isEqual5(node.elements, other.elements) && isEqual6(node.rightBracket, other.rightBracket);
   }
+
   bool visitMapLiteral(MapLiteral node) {
     MapLiteral other = this._other as MapLiteral;
     return isEqual6(node.constKeyword, other.constKeyword) && isEqual(node.typeArguments, other.typeArguments) && isEqual6(node.leftBracket, other.leftBracket) && isEqual5(node.entries, other.entries) && isEqual6(node.rightBracket, other.rightBracket);
   }
+
   bool visitMapLiteralEntry(MapLiteralEntry node) {
     MapLiteralEntry other = this._other as MapLiteralEntry;
     return isEqual(node.key, other.key) && isEqual6(node.separator, other.separator) && isEqual(node.value, other.value);
   }
+
   bool visitMethodDeclaration(MethodDeclaration node) {
     MethodDeclaration other = this._other as MethodDeclaration;
     return isEqual(node.documentationComment, other.documentationComment) && isEqual5(node.metadata, other.metadata) && isEqual6(node.externalKeyword, other.externalKeyword) && isEqual6(node.modifierKeyword, other.modifierKeyword) && isEqual(node.returnType, other.returnType) && isEqual6(node.propertyKeyword, other.propertyKeyword) && isEqual6(node.propertyKeyword, other.propertyKeyword) && isEqual(node.name, other.name) && isEqual(node.parameters, other.parameters) && isEqual(node.body, other.body);
   }
+
   bool visitMethodInvocation(MethodInvocation node) {
     MethodInvocation other = this._other as MethodInvocation;
     return isEqual(node.target, other.target) && isEqual6(node.period, other.period) && isEqual(node.methodName, other.methodName) && isEqual(node.argumentList, other.argumentList);
   }
+
   bool visitNamedExpression(NamedExpression node) {
     NamedExpression other = this._other as NamedExpression;
     return isEqual(node.name, other.name) && isEqual(node.expression, other.expression);
   }
+
   bool visitNativeClause(NativeClause node) {
     NativeClause other = this._other as NativeClause;
     return isEqual6(node.keyword, other.keyword) && isEqual(node.name, other.name);
   }
+
   bool visitNativeFunctionBody(NativeFunctionBody node) {
     NativeFunctionBody other = this._other as NativeFunctionBody;
     return isEqual6(node.nativeToken, other.nativeToken) && isEqual(node.stringLiteral, other.stringLiteral) && isEqual6(node.semicolon, other.semicolon);
   }
+
   bool visitNullLiteral(NullLiteral node) {
     NullLiteral other = this._other as NullLiteral;
     return isEqual6(node.literal, other.literal);
   }
+
   bool visitParenthesizedExpression(ParenthesizedExpression node) {
     ParenthesizedExpression other = this._other as ParenthesizedExpression;
     return isEqual6(node.leftParenthesis, other.leftParenthesis) && isEqual(node.expression, other.expression) && isEqual6(node.rightParenthesis, other.rightParenthesis);
   }
+
   bool visitPartDirective(PartDirective node) {
     PartDirective other = this._other as PartDirective;
     return isEqual(node.documentationComment, other.documentationComment) && isEqual5(node.metadata, other.metadata) && isEqual6(node.partToken, other.partToken) && isEqual(node.uri, other.uri) && isEqual6(node.semicolon, other.semicolon);
   }
+
   bool visitPartOfDirective(PartOfDirective node) {
     PartOfDirective other = this._other as PartOfDirective;
     return isEqual(node.documentationComment, other.documentationComment) && isEqual5(node.metadata, other.metadata) && isEqual6(node.partToken, other.partToken) && isEqual6(node.ofToken, other.ofToken) && isEqual(node.libraryName, other.libraryName) && isEqual6(node.semicolon, other.semicolon);
   }
+
   bool visitPostfixExpression(PostfixExpression node) {
     PostfixExpression other = this._other as PostfixExpression;
     return isEqual(node.operand, other.operand) && isEqual6(node.operator, other.operator);
   }
+
   bool visitPrefixedIdentifier(PrefixedIdentifier node) {
     PrefixedIdentifier other = this._other as PrefixedIdentifier;
     return isEqual(node.prefix, other.prefix) && isEqual6(node.period, other.period) && isEqual(node.identifier, other.identifier);
   }
+
   bool visitPrefixExpression(PrefixExpression node) {
     PrefixExpression other = this._other as PrefixExpression;
     return isEqual6(node.operator, other.operator) && isEqual(node.operand, other.operand);
   }
+
   bool visitPropertyAccess(PropertyAccess node) {
     PropertyAccess other = this._other as PropertyAccess;
     return isEqual(node.target, other.target) && isEqual6(node.operator, other.operator) && isEqual(node.propertyName, other.propertyName);
   }
+
   bool visitRedirectingConstructorInvocation(RedirectingConstructorInvocation node) {
     RedirectingConstructorInvocation other = this._other as RedirectingConstructorInvocation;
     return isEqual6(node.keyword, other.keyword) && isEqual6(node.period, other.period) && isEqual(node.constructorName, other.constructorName) && isEqual(node.argumentList, other.argumentList);
   }
+
   bool visitRethrowExpression(RethrowExpression node) {
     RethrowExpression other = this._other as RethrowExpression;
     return isEqual6(node.keyword, other.keyword);
   }
+
   bool visitReturnStatement(ReturnStatement node) {
     ReturnStatement other = this._other as ReturnStatement;
     return isEqual6(node.keyword, other.keyword) && isEqual(node.expression, other.expression) && isEqual6(node.semicolon, other.semicolon);
   }
+
   bool visitScriptTag(ScriptTag node) {
     ScriptTag other = this._other as ScriptTag;
     return isEqual6(node.scriptTag, other.scriptTag);
   }
+
   bool visitShowCombinator(ShowCombinator node) {
     ShowCombinator other = this._other as ShowCombinator;
     return isEqual6(node.keyword, other.keyword) && isEqual5(node.shownNames, other.shownNames);
   }
+
   bool visitSimpleFormalParameter(SimpleFormalParameter node) {
     SimpleFormalParameter other = this._other as SimpleFormalParameter;
     return isEqual(node.documentationComment, other.documentationComment) && isEqual5(node.metadata, other.metadata) && isEqual6(node.keyword, other.keyword) && isEqual(node.type, other.type) && isEqual(node.identifier, other.identifier);
   }
+
   bool visitSimpleIdentifier(SimpleIdentifier node) {
     SimpleIdentifier other = this._other as SimpleIdentifier;
     return isEqual6(node.token, other.token);
   }
+
   bool visitSimpleStringLiteral(SimpleStringLiteral node) {
     SimpleStringLiteral other = this._other as SimpleStringLiteral;
     return isEqual6(node.literal, other.literal) && identical(node.value, other.value);
   }
+
   bool visitStringInterpolation(StringInterpolation node) {
     StringInterpolation other = this._other as StringInterpolation;
     return isEqual5(node.elements, other.elements);
   }
+
   bool visitSuperConstructorInvocation(SuperConstructorInvocation node) {
     SuperConstructorInvocation other = this._other as SuperConstructorInvocation;
     return isEqual6(node.keyword, other.keyword) && isEqual6(node.period, other.period) && isEqual(node.constructorName, other.constructorName) && isEqual(node.argumentList, other.argumentList);
   }
+
   bool visitSuperExpression(SuperExpression node) {
     SuperExpression other = this._other as SuperExpression;
     return isEqual6(node.keyword, other.keyword);
   }
+
   bool visitSwitchCase(SwitchCase node) {
     SwitchCase other = this._other as SwitchCase;
     return isEqual5(node.labels, other.labels) && isEqual6(node.keyword, other.keyword) && isEqual(node.expression, other.expression) && isEqual6(node.colon, other.colon) && isEqual5(node.statements, other.statements);
   }
+
   bool visitSwitchDefault(SwitchDefault node) {
     SwitchDefault other = this._other as SwitchDefault;
     return isEqual5(node.labels, other.labels) && isEqual6(node.keyword, other.keyword) && isEqual6(node.colon, other.colon) && isEqual5(node.statements, other.statements);
   }
+
   bool visitSwitchStatement(SwitchStatement node) {
     SwitchStatement other = this._other as SwitchStatement;
     return isEqual6(node.keyword, other.keyword) && isEqual6(node.leftParenthesis, other.leftParenthesis) && isEqual(node.expression, other.expression) && isEqual6(node.rightParenthesis, other.rightParenthesis) && isEqual6(node.leftBracket, other.leftBracket) && isEqual5(node.members, other.members) && isEqual6(node.rightBracket, other.rightBracket);
   }
+
   bool visitSymbolLiteral(SymbolLiteral node) {
     SymbolLiteral other = this._other as SymbolLiteral;
     return isEqual6(node.poundSign, other.poundSign) && isEqual7(node.components, other.components);
   }
+
   bool visitThisExpression(ThisExpression node) {
     ThisExpression other = this._other as ThisExpression;
     return isEqual6(node.keyword, other.keyword);
   }
+
   bool visitThrowExpression(ThrowExpression node) {
     ThrowExpression other = this._other as ThrowExpression;
     return isEqual6(node.keyword, other.keyword) && isEqual(node.expression, other.expression);
   }
+
   bool visitTopLevelVariableDeclaration(TopLevelVariableDeclaration node) {
     TopLevelVariableDeclaration other = this._other as TopLevelVariableDeclaration;
     return isEqual(node.documentationComment, other.documentationComment) && isEqual5(node.metadata, other.metadata) && isEqual(node.variables, other.variables) && isEqual6(node.semicolon, other.semicolon);
   }
+
   bool visitTryStatement(TryStatement node) {
     TryStatement other = this._other as TryStatement;
     return isEqual6(node.tryKeyword, other.tryKeyword) && isEqual(node.body, other.body) && isEqual5(node.catchClauses, other.catchClauses) && isEqual6(node.finallyKeyword, other.finallyKeyword) && isEqual(node.finallyBlock, other.finallyBlock);
   }
+
   bool visitTypeArgumentList(TypeArgumentList node) {
     TypeArgumentList other = this._other as TypeArgumentList;
     return isEqual6(node.leftBracket, other.leftBracket) && isEqual5(node.arguments, other.arguments) && isEqual6(node.rightBracket, other.rightBracket);
   }
+
   bool visitTypeName(TypeName node) {
     TypeName other = this._other as TypeName;
     return isEqual(node.name, other.name) && isEqual(node.typeArguments, other.typeArguments);
   }
+
   bool visitTypeParameter(TypeParameter node) {
     TypeParameter other = this._other as TypeParameter;
     return isEqual(node.documentationComment, other.documentationComment) && isEqual5(node.metadata, other.metadata) && isEqual(node.name, other.name) && isEqual6(node.keyword, other.keyword) && isEqual(node.bound, other.bound);
   }
+
   bool visitTypeParameterList(TypeParameterList node) {
     TypeParameterList other = this._other as TypeParameterList;
     return isEqual6(node.leftBracket, other.leftBracket) && isEqual5(node.typeParameters, other.typeParameters) && isEqual6(node.rightBracket, other.rightBracket);
   }
+
   bool visitVariableDeclaration(VariableDeclaration node) {
     VariableDeclaration other = this._other as VariableDeclaration;
     return isEqual(node.documentationComment, other.documentationComment) && isEqual5(node.metadata, other.metadata) && isEqual(node.name, other.name) && isEqual6(node.equals, other.equals) && isEqual(node.initializer, other.initializer);
   }
+
   bool visitVariableDeclarationList(VariableDeclarationList node) {
     VariableDeclarationList other = this._other as VariableDeclarationList;
     return isEqual(node.documentationComment, other.documentationComment) && isEqual5(node.metadata, other.metadata) && isEqual6(node.keyword, other.keyword) && isEqual(node.type, other.type) && isEqual5(node.variables, other.variables);
   }
+
   bool visitVariableDeclarationStatement(VariableDeclarationStatement node) {
     VariableDeclarationStatement other = this._other as VariableDeclarationStatement;
     return isEqual(node.variables, other.variables) && isEqual6(node.semicolon, other.semicolon);
   }
+
   bool visitWhileStatement(WhileStatement node) {
     WhileStatement other = this._other as WhileStatement;
     return isEqual6(node.keyword, other.keyword) && isEqual6(node.leftParenthesis, other.leftParenthesis) && isEqual(node.condition, other.condition) && isEqual6(node.rightParenthesis, other.rightParenthesis) && isEqual(node.body, other.body);
   }
+
   bool visitWithClause(WithClause node) {
     WithClause other = this._other as WithClause;
     return isEqual6(node.withKeyword, other.withKeyword) && isEqual5(node.mixinTypes, other.mixinTypes);
   }
 
   /**
    * Return `true` if the given AST nodes have the same structure.
    *
    * @param first the first node being compared
    * @param second the second node being compared
@@ skipping 69 matching lines @@
       return false;
     }
     for (int i = 0; i < length; i++) {
       if (isEqual6(first[i], second[i])) {
         return false;
       }
     }
     return true;
   }
 }
+
 /**
  * Instances of the class `IncrementalASTCloner` implement an object that will clone any AST
  * structure that it visits. The cloner will clone the structure, replacing the specified ASTNode
  * with a new ASTNode, mapping the old token stream to a new token stream, and preserving resolution
  * results.
  */
 class IncrementalASTCloner implements ASTVisitor<ASTNode> {
-
   /**
    * The node to be replaced during the cloning process.
    */
   ASTNode _oldNode;
 
   /**
    * The replacement node used during the cloning process.
    */
   ASTNode _newNode;
 
   /**
    * A mapping of old tokens to new tokens used during the cloning process.
    */
   TokenMap _tokenMap;
 
   /**
    * Construct a new instance that will replace `oldNode` with `newNode` in the process
    * of cloning an existing AST structure.
    *
    * @param oldNode the node to be replaced
    * @param newNode the replacement node
    * @param tokenMap a mapping of old tokens to new tokens (not `null`)
    */
   IncrementalASTCloner(ASTNode oldNode, ASTNode newNode, TokenMap tokenMap) {
     this._oldNode = oldNode;
     this._newNode = newNode;
     this._tokenMap = tokenMap;
   }
+
   AdjacentStrings visitAdjacentStrings(AdjacentStrings node) => new AdjacentStrings.full(clone5(node.strings));
+
   Annotation visitAnnotation(Annotation node) {
     Annotation copy = new Annotation.full(map(node.atSign), clone4(node.name), map(node.period), clone4(node.constructorName), clone4(node.arguments));
     copy.element = node.element;
     return copy;
   }
+
   ArgumentDefinitionTest visitArgumentDefinitionTest(ArgumentDefinitionTest node) {
     ArgumentDefinitionTest copy = new ArgumentDefinitionTest.full(map(node.question), clone4(node.identifier));
     copy.propagatedType = node.propagatedType;
     copy.staticType = node.staticType;
     return copy;
   }
+
   ArgumentList visitArgumentList(ArgumentList node) => new ArgumentList.full(map(node.leftParenthesis), clone5(node.arguments), map(node.rightParenthesis));
+
   AsExpression visitAsExpression(AsExpression node) {
     AsExpression copy = new AsExpression.full(clone4(node.expression), map(node.asOperator), clone4(node.type));
     copy.propagatedType = node.propagatedType;
     copy.staticType = node.staticType;
     return copy;
   }
+
   ASTNode visitAssertStatement(AssertStatement node) => new AssertStatement.full(map(node.keyword), map(node.leftParenthesis), clone4(node.condition), map(node.rightParenthesis), map(node.semicolon));
+
   AssignmentExpression visitAssignmentExpression(AssignmentExpression node) {
     AssignmentExpression copy = new AssignmentExpression.full(clone4(node.leftHandSide), map(node.operator), clone4(node.rightHandSide));
     copy.propagatedElement = node.propagatedElement;
     copy.propagatedType = node.propagatedType;
     copy.staticElement = node.staticElement;
     copy.staticType = node.staticType;
     return copy;
   }
+
   BinaryExpression visitBinaryExpression(BinaryExpression node) {
     BinaryExpression copy = new BinaryExpression.full(clone4(node.leftOperand), map(node.operator), clone4(node.rightOperand));
     copy.propagatedElement = node.propagatedElement;
     copy.propagatedType = node.propagatedType;
     copy.staticElement = node.staticElement;
     copy.staticType = node.staticType;
     return copy;
   }
+
   Block visitBlock(Block node) => new Block.full(map(node.leftBracket), clone5(node.statements), map(node.rightBracket));
+
   BlockFunctionBody visitBlockFunctionBody(BlockFunctionBody node) => new BlockFunctionBody.full(clone4(node.block));
+
   BooleanLiteral visitBooleanLiteral(BooleanLiteral node) {
     BooleanLiteral copy = new BooleanLiteral.full(map(node.literal), node.value);
     copy.propagatedType = node.propagatedType;
     copy.staticType = node.staticType;
     return copy;
   }
+
   BreakStatement visitBreakStatement(BreakStatement node) => new BreakStatement.full(map(node.keyword), clone4(node.label), map(node.semicolon));
+
   CascadeExpression visitCascadeExpression(CascadeExpression node) {
     CascadeExpression copy = new CascadeExpression.full(clone4(node.target), clone5(node.cascadeSections));
     copy.propagatedType = node.propagatedType;
     copy.staticType = node.staticType;
     return copy;
   }
+
   CatchClause visitCatchClause(CatchClause node) => new CatchClause.full(map(node.onKeyword), clone4(node.exceptionType), map(node.catchKeyword), map(node.leftParenthesis), clone4(node.exceptionParameter), map(node.comma), clone4(node.stackTraceParameter), map(node.rightParenthesis), clone4(node.body));
+
   ClassDeclaration visitClassDeclaration(ClassDeclaration node) {
     ClassDeclaration copy = new ClassDeclaration.full(clone4(node.documentationComment), clone5(node.metadata), map(node.abstractKeyword), map(node.classKeyword), clone4(node.name), clone4(node.typeParameters), clone4(node.extendsClause), clone4(node.withClause), clone4(node.implementsClause), map(node.leftBracket), clone5(node.members), map(node.rightBracket));
     copy.nativeClause = clone4(node.nativeClause);
     return copy;
   }
+
   ClassTypeAlias visitClassTypeAlias(ClassTypeAlias node) => new ClassTypeAlias.full(clone4(node.documentationComment), clone5(node.metadata), map(node.keyword), clone4(node.name), clone4(node.typeParameters), map(node.equals), map(node.abstractKeyword), clone4(node.superclass), clone4(node.withClause), clone4(node.implementsClause), map(node.semicolon));
+
   Comment visitComment(Comment node) {
     if (node.isDocumentation) {
       return Comment.createDocumentationComment2(map2(node.tokens), clone5(node.references));
     } else if (node.isBlock) {
       return Comment.createBlockComment(map2(node.tokens));
     }
     return Comment.createEndOfLineComment(map2(node.tokens));
   }
+
   CommentReference visitCommentReference(CommentReference node) => new CommentReference.full(map(node.newKeyword), clone4(node.identifier));
+
   CompilationUnit visitCompilationUnit(CompilationUnit node) {
     CompilationUnit copy = new CompilationUnit.full(map(node.beginToken), clone4(node.scriptTag), clone5(node.directives), clone5(node.declarations), map(node.endToken));
     copy.lineInfo = node.lineInfo;
     copy.element = node.element;
     return copy;
   }
+
   ConditionalExpression visitConditionalExpression(ConditionalExpression node) {
     ConditionalExpression copy = new ConditionalExpression.full(clone4(node.condition), map(node.question), clone4(node.thenExpression), map(node.colon), clone4(node.elseExpression));
     copy.propagatedType = node.propagatedType;
     copy.staticType = node.staticType;
     return copy;
   }
+
   ConstructorDeclaration visitConstructorDeclaration(ConstructorDeclaration node) {
     ConstructorDeclaration copy = new ConstructorDeclaration.full(clone4(node.documentationComment), clone5(node.metadata), map(node.externalKeyword), map(node.constKeyword), map(node.factoryKeyword), clone4(node.returnType), map(node.period), clone4(node.name), clone4(node.parameters), map(node.separator), clone5(node.initializers), clone4(node.redirectedConstructor), clone4(node.body));
     copy.element = node.element;
     return copy;
   }
+
   ConstructorFieldInitializer visitConstructorFieldInitializer(ConstructorFieldInitializer node) => new ConstructorFieldInitializer.full(map(node.keyword), map(node.period), clone4(node.fieldName), map(node.equals), clone4(node.expression));
+
   ConstructorName visitConstructorName(ConstructorName node) {
     ConstructorName copy = new ConstructorName.full(clone4(node.type), map(node.period), clone4(node.name));
     copy.staticElement = node.staticElement;
     return copy;
   }
+
   ContinueStatement visitContinueStatement(ContinueStatement node) => new ContinueStatement.full(map(node.keyword), clone4(node.label), map(node.semicolon));
+
   DeclaredIdentifier visitDeclaredIdentifier(DeclaredIdentifier node) => new DeclaredIdentifier.full(clone4(node.documentationComment), clone5(node.metadata), map(node.keyword), clone4(node.type), clone4(node.identifier));
+
   DefaultFormalParameter visitDefaultFormalParameter(DefaultFormalParameter node) => new DefaultFormalParameter.full(clone4(node.parameter), node.kind, map(node.separator), clone4(node.defaultValue));
+
   DoStatement visitDoStatement(DoStatement node) => new DoStatement.full(map(node.doKeyword), clone4(node.body), map(node.whileKeyword), map(node.leftParenthesis), clone4(node.condition), map(node.rightParenthesis), map(node.semicolon));
+
   DoubleLiteral visitDoubleLiteral(DoubleLiteral node) {
     DoubleLiteral copy = new DoubleLiteral.full(map(node.literal), node.value);
     copy.propagatedType = node.propagatedType;
     copy.staticType = node.staticType;
     return copy;
   }
+
   EmptyFunctionBody visitEmptyFunctionBody(EmptyFunctionBody node) => new EmptyFunctionBody.full(map(node.semicolon));
+
   EmptyStatement visitEmptyStatement(EmptyStatement node) => new EmptyStatement.full(map(node.semicolon));
+
   ExportDirective visitExportDirective(ExportDirective node) {
     ExportDirective copy = new ExportDirective.full(clone4(node.documentationComment), clone5(node.metadata), map(node.keyword), clone4(node.uri), clone5(node.combinators), map(node.semicolon));
     copy.element = node.element;
     return copy;
   }
+
   ExpressionFunctionBody visitExpressionFunctionBody(ExpressionFunctionBody node) => new ExpressionFunctionBody.full(map(node.functionDefinition), clone4(node.expression), map(node.semicolon));
+
   ExpressionStatement visitExpressionStatement(ExpressionStatement node) => new ExpressionStatement.full(clone4(node.expression), map(node.semicolon));
+
   ExtendsClause visitExtendsClause(ExtendsClause node) => new ExtendsClause.full(map(node.keyword), clone4(node.superclass));
+
   FieldDeclaration visitFieldDeclaration(FieldDeclaration node) => new FieldDeclaration.full(clone4(node.documentationComment), clone5(node.metadata), map(node.staticKeyword), clone4(node.fields), map(node.semicolon));
+
   FieldFormalParameter visitFieldFormalParameter(FieldFormalParameter node) => new FieldFormalParameter.full(clone4(node.documentationComment), clone5(node.metadata), map(node.keyword), clone4(node.type), map(node.thisToken), map(node.period), clone4(node.identifier), clone4(node.parameters));
+
   ForEachStatement visitForEachStatement(ForEachStatement node) {
     DeclaredIdentifier loopVariable = node.loopVariable;
     if (loopVariable == null) {
       return new ForEachStatement.con2_full(map(node.forKeyword), map(node.leftParenthesis), clone4(node.identifier), map(node.inKeyword), clone4(node.iterator), map(node.rightParenthesis), clone4(node.body));
     }
     return new ForEachStatement.con1_full(map(node.forKeyword), map(node.leftParenthesis), clone4(loopVariable), map(node.inKeyword), clone4(node.iterator), map(node.rightParenthesis), clone4(node.body));
   }
+
   FormalParameterList visitFormalParameterList(FormalParameterList node) => new FormalParameterList.full(map(node.leftParenthesis), clone5(node.parameters), map(node.leftDelimiter), map(node.rightDelimiter), map(node.rightParenthesis));
+
   ForStatement visitForStatement(ForStatement node) => new ForStatement.full(map(node.forKeyword), map(node.leftParenthesis), clone4(node.variables), clone4(node.initialization), map(node.leftSeparator), clone4(node.condition), map(node.rightSeparator), clone5(node.updaters), map(node.rightParenthesis), clone4(node.body));
+
   FunctionDeclaration visitFunctionDeclaration(FunctionDeclaration node) => new FunctionDeclaration.full(clone4(node.documentationComment), clone5(node.metadata), map(node.externalKeyword), clone4(node.returnType), map(node.propertyKeyword), clone4(node.name), clone4(node.functionExpression));
+
   FunctionDeclarationStatement visitFunctionDeclarationStatement(FunctionDeclarationStatement node) => new FunctionDeclarationStatement.full(clone4(node.functionDeclaration));
+
   FunctionExpression visitFunctionExpression(FunctionExpression node) {
     FunctionExpression copy = new FunctionExpression.full(clone4(node.parameters), clone4(node.body));
     copy.element = node.element;
     copy.propagatedType = node.propagatedType;
     copy.staticType = node.staticType;
     return copy;
   }
+
   FunctionExpressionInvocation visitFunctionExpressionInvocation(FunctionExpressionInvocation node) {
     FunctionExpressionInvocation copy = new FunctionExpressionInvocation.full(clone4(node.function), clone4(node.argumentList));
     copy.propagatedElement = node.propagatedElement;
     copy.propagatedType = node.propagatedType;
     copy.staticElement = node.staticElement;
     copy.staticType = node.staticType;
     return copy;
   }
+
   FunctionTypeAlias visitFunctionTypeAlias(FunctionTypeAlias node) => new FunctionTypeAlias.full(clone4(node.documentationComment), clone5(node.metadata), map(node.keyword), clone4(node.returnType), clone4(node.name), clone4(node.typeParameters), clone4(node.parameters), map(node.semicolon));
+
   FunctionTypedFormalParameter visitFunctionTypedFormalParameter(FunctionTypedFormalParameter node) => new FunctionTypedFormalParameter.full(clone4(node.documentationComment), clone5(node.metadata), clone4(node.returnType), clone4(node.identifier), clone4(node.parameters));
+
   HideCombinator visitHideCombinator(HideCombinator node) => new HideCombinator.full(map(node.keyword), clone5(node.hiddenNames));
+
   IfStatement visitIfStatement(IfStatement node) => new IfStatement.full(map(node.ifKeyword), map(node.leftParenthesis), clone4(node.condition), map(node.rightParenthesis), clone4(node.thenStatement), map(node.elseKeyword), clone4(node.elseStatement));
+
   ImplementsClause visitImplementsClause(ImplementsClause node) => new ImplementsClause.full(map(node.keyword), clone5(node.interfaces));
+
   ImportDirective visitImportDirective(ImportDirective node) => new ImportDirective.full(clone4(node.documentationComment), clone5(node.metadata), map(node.keyword), clone4(node.uri), map(node.asToken), clone4(node.prefix), clone5(node.combinators), map(node.semicolon));
+
   IndexExpression visitIndexExpression(IndexExpression node) {
     Token period = map(node.period);
     IndexExpression copy;
     if (period == null) {
       copy = new IndexExpression.forTarget_full(clone4(node.target), map(node.leftBracket), clone4(node.index), map(node.rightBracket));
     } else {
       copy = new IndexExpression.forCascade_full(period, map(node.leftBracket), clone4(node.index), map(node.rightBracket));
     }
     copy.auxiliaryElements = node.auxiliaryElements;
     copy.propagatedElement = node.propagatedElement;
     copy.propagatedType = node.propagatedType;
     copy.staticElement = node.staticElement;
     copy.staticType = node.staticType;
     return copy;
   }
+
   InstanceCreationExpression visitInstanceCreationExpression(InstanceCreationExpression node) {
     InstanceCreationExpression copy = new InstanceCreationExpression.full(map(node.keyword), clone4(node.constructorName), clone4(node.argumentList));
     copy.propagatedType = node.propagatedType;
     copy.staticElement = node.staticElement;
     copy.staticType = node.staticType;
     return copy;
   }
+
   IntegerLiteral visitIntegerLiteral(IntegerLiteral node) {
     IntegerLiteral copy = new IntegerLiteral.full(map(node.literal), node.value);
     copy.propagatedType = node.propagatedType;
     copy.staticType = node.staticType;
     return copy;
   }
+
   InterpolationExpression visitInterpolationExpression(InterpolationExpression node) => new InterpolationExpression.full(map(node.leftBracket), clone4(node.expression), map(node.rightBracket));
+
   InterpolationString visitInterpolationString(InterpolationString node) => new InterpolationString.full(map(node.contents), node.value);
+
   IsExpression visitIsExpression(IsExpression node) {
     IsExpression copy = new IsExpression.full(clone4(node.expression), map(node.isOperator), map(node.notOperator), clone4(node.type));
     copy.propagatedType = node.propagatedType;
     copy.staticType = node.staticType;
     return copy;
   }
+
   Label visitLabel(Label node) => new Label.full(clone4(node.label), map(node.colon));
+
   LabeledStatement visitLabeledStatement(LabeledStatement node) => new LabeledStatement.full(clone5(node.labels), clone4(node.statement));
+
   LibraryDirective visitLibraryDirective(LibraryDirective node) => new LibraryDirective.full(clone4(node.documentationComment), clone5(node.metadata), map(node.libraryToken), clone4(node.name), map(node.semicolon));
+
   LibraryIdentifier visitLibraryIdentifier(LibraryIdentifier node) {
     LibraryIdentifier copy = new LibraryIdentifier.full(clone5(node.components));
     copy.propagatedType = node.propagatedType;
     copy.staticType = node.staticType;
     return copy;
   }
+
   ListLiteral visitListLiteral(ListLiteral node) {
     ListLiteral copy = new ListLiteral.full(map(node.constKeyword), clone4(node.typeArguments), map(node.leftBracket), clone5(node.elements), map(node.rightBracket));
     copy.propagatedType = node.propagatedType;
     copy.staticType = node.staticType;
     return copy;
   }
+
   MapLiteral visitMapLiteral(MapLiteral node) {
     MapLiteral copy = new MapLiteral.full(map(node.constKeyword), clone4(node.typeArguments), map(node.leftBracket), clone5(node.entries), map(node.rightBracket));
     copy.propagatedType = node.propagatedType;
     copy.staticType = node.staticType;
     return copy;
   }
+
   MapLiteralEntry visitMapLiteralEntry(MapLiteralEntry node) => new MapLiteralEntry.full(clone4(node.key), map(node.separator), clone4(node.value));
+
   MethodDeclaration visitMethodDeclaration(MethodDeclaration node) => new MethodDeclaration.full(clone4(node.documentationComment), clone5(node.metadata), map(node.externalKeyword), map(node.modifierKeyword), clone4(node.returnType), map(node.propertyKeyword), map(node.operatorKeyword), clone4(node.name), clone4(node.parameters), clone4(node.body));
+
   MethodInvocation visitMethodInvocation(MethodInvocation node) {
     MethodInvocation copy = new MethodInvocation.full(clone4(node.target), map(node.period), clone4(node.methodName), clone4(node.argumentList));
     copy.propagatedType = node.propagatedType;
     copy.staticType = node.staticType;
     return copy;
   }
+
   NamedExpression visitNamedExpression(NamedExpression node) {
     NamedExpression copy = new NamedExpression.full(clone4(node.name), clone4(node.expression));
     copy.propagatedType = node.propagatedType;
     copy.staticType = node.staticType;
     return copy;
   }
+
   ASTNode visitNativeClause(NativeClause node) => new NativeClause.full(map(node.keyword), clone4(node.name));
+
   NativeFunctionBody visitNativeFunctionBody(NativeFunctionBody node) => new NativeFunctionBody.full(map(node.nativeToken), clone4(node.stringLiteral), map(node.semicolon));
+
   NullLiteral visitNullLiteral(NullLiteral node) {
     NullLiteral copy = new NullLiteral.full(map(node.literal));
     copy.propagatedType = node.propagatedType;
     copy.staticType = node.staticType;
     return copy;
   }
+
   ParenthesizedExpression visitParenthesizedExpression(ParenthesizedExpression node) {
     ParenthesizedExpression copy = new ParenthesizedExpression.full(map(node.leftParenthesis), clone4(node.expression), map(node.rightParenthesis));
     copy.propagatedType = node.propagatedType;
     copy.staticType = node.staticType;
     return copy;
   }
+
   PartDirective visitPartDirective(PartDirective node) {
     PartDirective copy = new PartDirective.full(clone4(node.documentationComment), clone5(node.metadata), map(node.partToken), clone4(node.uri), map(node.semicolon));
     copy.element = node.element;
     return copy;
   }
+
   PartOfDirective visitPartOfDirective(PartOfDirective node) {
     PartOfDirective copy = new PartOfDirective.full(clone4(node.documentationComment), clone5(node.metadata), map(node.partToken), map(node.ofToken), clone4(node.libraryName), map(node.semicolon));
     copy.element = node.element;
     return copy;
   }
+
   PostfixExpression visitPostfixExpression(PostfixExpression node) {
     PostfixExpression copy = new PostfixExpression.full(clone4(node.operand), map(node.operator));
     copy.propagatedElement = node.propagatedElement;
     copy.propagatedType = node.propagatedType;
     copy.staticElement = node.staticElement;
     copy.staticType = node.staticType;
     return copy;
   }
+
   PrefixedIdentifier visitPrefixedIdentifier(PrefixedIdentifier node) {
     PrefixedIdentifier copy = new PrefixedIdentifier.full(clone4(node.prefix), map(node.period), clone4(node.identifier));
     copy.propagatedType = node.propagatedType;
     copy.staticType = node.staticType;
     return copy;
   }
+
   PrefixExpression visitPrefixExpression(PrefixExpression node) {
     PrefixExpression copy = new PrefixExpression.full(map(node.operator), clone4(node.operand));
     copy.propagatedElement = node.propagatedElement;
     copy.propagatedType = node.propagatedType;
     copy.staticElement = node.staticElement;
     copy.staticType = node.staticType;
     return copy;
   }
+
   PropertyAccess visitPropertyAccess(PropertyAccess node) {
     PropertyAccess copy = new PropertyAccess.full(clone4(node.target), map(node.operator), clone4(node.propertyName));
     copy.propagatedType = node.propagatedType;
     copy.staticType = node.staticType;
     return copy;
   }
+
   RedirectingConstructorInvocation visitRedirectingConstructorInvocation(RedirectingConstructorInvocation node) {
     RedirectingConstructorInvocation copy = new RedirectingConstructorInvocation.full(map(node.keyword), map(node.period), clone4(node.constructorName), clone4(node.argumentList));
     copy.staticElement = node.staticElement;
     return copy;
   }
+
   RethrowExpression visitRethrowExpression(RethrowExpression node) {
     RethrowExpression copy = new RethrowExpression.full(map(node.keyword));
     copy.propagatedType = node.propagatedType;
     copy.staticType = node.staticType;
     return copy;
   }
+
   ReturnStatement visitReturnStatement(ReturnStatement node) => new ReturnStatement.full(map(node.keyword), clone4(node.expression), map(node.semicolon));
+
   ScriptTag visitScriptTag(ScriptTag node) => new ScriptTag.full(map(node.scriptTag));
+
   ShowCombinator visitShowCombinator(ShowCombinator node) => new ShowCombinator.full(map(node.keyword), clone5(node.shownNames));
+
   SimpleFormalParameter visitSimpleFormalParameter(SimpleFormalParameter node) => new SimpleFormalParameter.full(clone4(node.documentationComment), clone5(node.metadata), map(node.keyword), clone4(node.type), clone4(node.identifier));
+
   SimpleIdentifier visitSimpleIdentifier(SimpleIdentifier node) {
     SimpleIdentifier copy = new SimpleIdentifier.full(map(node.token));
     copy.auxiliaryElements = node.auxiliaryElements;
     copy.propagatedElement = node.propagatedElement;
     copy.propagatedType = node.propagatedType;
     copy.staticElement = node.staticElement;
     copy.staticType = node.staticType;
     return copy;
   }
+
   SimpleStringLiteral visitSimpleStringLiteral(SimpleStringLiteral node) {
     SimpleStringLiteral copy = new SimpleStringLiteral.full(map(node.literal), node.value);
     copy.propagatedType = node.propagatedType;
     copy.staticType = node.staticType;
     return copy;
   }
+
   StringInterpolation visitStringInterpolation(StringInterpolation node) {
     StringInterpolation copy = new StringInterpolation.full(clone5(node.elements));
     copy.propagatedType = node.propagatedType;
     copy.staticType = node.staticType;
     return copy;
   }
+
   SuperConstructorInvocation visitSuperConstructorInvocation(SuperConstructorInvocation node) {
     SuperConstructorInvocation copy = new SuperConstructorInvocation.full(map(node.keyword), map(node.period), clone4(node.constructorName), clone4(node.argumentList));
     copy.staticElement = node.staticElement;
     return copy;
   }
+
   SuperExpression visitSuperExpression(SuperExpression node) {
     SuperExpression copy = new SuperExpression.full(map(node.keyword));
     copy.propagatedType = node.propagatedType;
     copy.staticType = node.staticType;
     return copy;
   }
+
   SwitchCase visitSwitchCase(SwitchCase node) => new SwitchCase.full(clone5(node.labels), map(node.keyword), clone4(node.expression), map(node.colon), clone5(node.statements));
+
   SwitchDefault visitSwitchDefault(SwitchDefault node) => new SwitchDefault.full(clone5(node.labels), map(node.keyword), map(node.colon), clone5(node.statements));
+
   SwitchStatement visitSwitchStatement(SwitchStatement node) => new SwitchStatement.full(map(node.keyword), map(node.leftParenthesis), clone4(node.expression), map(node.rightParenthesis), map(node.leftBracket), clone5(node.members), map(node.rightBracket));
+
   ASTNode visitSymbolLiteral(SymbolLiteral node) {
     SymbolLiteral copy = new SymbolLiteral.full(map(node.poundSign), map2(node.components));
     copy.propagatedType = node.propagatedType;
     copy.staticType = node.staticType;
     return copy;
   }
+
   ThisExpression visitThisExpression(ThisExpression node) {
     ThisExpression copy = new ThisExpression.full(map(node.keyword));
     copy.propagatedType = node.propagatedType;
     copy.staticType = node.staticType;
     return copy;
   }
+
   ThrowExpression visitThrowExpression(ThrowExpression node) {
     ThrowExpression copy = new ThrowExpression.full(map(node.keyword), clone4(node.expression));
     copy.propagatedType = node.propagatedType;
     copy.staticType = node.staticType;
     return copy;
   }
+
   TopLevelVariableDeclaration visitTopLevelVariableDeclaration(TopLevelVariableDeclaration node) => new TopLevelVariableDeclaration.full(clone4(node.documentationComment), clone5(node.metadata), clone4(node.variables), map(node.semicolon));
+
   TryStatement visitTryStatement(TryStatement node) => new TryStatement.full(map(node.tryKeyword), clone4(node.body), clone5(node.catchClauses), map(node.finallyKeyword), clone4(node.finallyBlock));
+
   TypeArgumentList visitTypeArgumentList(TypeArgumentList node) => new TypeArgumentList.full(map(node.leftBracket), clone5(node.arguments), map(node.rightBracket));
+
   TypeName visitTypeName(TypeName node) {
     TypeName copy = new TypeName.full(clone4(node.name), clone4(node.typeArguments));
     copy.type = node.type;
     return copy;
   }
+
   TypeParameter visitTypeParameter(TypeParameter node) => new TypeParameter.full(clone4(node.documentationComment), clone5(node.metadata), clone4(node.name), map(node.keyword), clone4(node.bound));
+
   TypeParameterList visitTypeParameterList(TypeParameterList node) => new TypeParameterList.full(map(node.leftBracket), clone5(node.typeParameters), map(node.rightBracket));
+
   VariableDeclaration visitVariableDeclaration(VariableDeclaration node) => new VariableDeclaration.full(null, clone5(node.metadata), clone4(node.name), map(node.equals), clone4(node.initializer));
+
   VariableDeclarationList visitVariableDeclarationList(VariableDeclarationList node) => new VariableDeclarationList.full(null, clone5(node.metadata), map(node.keyword), clone4(node.type), clone5(node.variables));
+
   VariableDeclarationStatement visitVariableDeclarationStatement(VariableDeclarationStatement node) => new VariableDeclarationStatement.full(clone4(node.variables), map(node.semicolon));
+
   WhileStatement visitWhileStatement(WhileStatement node) => new WhileStatement.full(map(node.keyword), map(node.leftParenthesis), clone4(node.condition), map(node.rightParenthesis), clone4(node.body));
+
   WithClause visitWithClause(WithClause node) => new WithClause.full(map(node.withKeyword), clone5(node.mixinTypes));
+
   ASTNode clone4(ASTNode node) {
     if (node == null) {
       return null;
     }
     if (identical(node, _oldNode)) {
       return _newNode as ASTNode;
     }
     return node.accept(this) as ASTNode;
   }
+
   List clone5(NodeList nodes) {
     List clonedNodes = new List();
     for (ASTNode node in nodes) {
       clonedNodes.add(clone4(node));
     }
     return clonedNodes;
   }
+
   Token map(Token oldToken) {
     if (oldToken == null) {
       return null;
     }
     return _tokenMap.get(oldToken);
   }
+
   List<Token> map2(List<Token> oldTokens) {
     List<Token> newTokens = new List<Token>(oldTokens.length);
     for (int index = 0; index < newTokens.length; index++) {
       newTokens[index] = map(oldTokens[index]);
     }
     return newTokens;
   }
 }
+
 /**
  * Traverse the AST from initial child node to successive parents, building a collection of local
  * variable and parameter names visible to the initial child node. In case of name shadowing, the
  * first name seen is the most specific one so names are not redefined.
  *
  * Completion test code coverage is 95%. The two basic blocks that are not executed cannot be
  * executed. They are included for future reference.
  *
  * @coverage com.google.dart.engine.services.completion
  */
 class ScopedNameFinder extends GeneralizingASTVisitor<Object> {
   Declaration declaration;
+
   ASTNode _immediateChild;
+
   final Map<String, SimpleIdentifier> locals = new Map<String, SimpleIdentifier>();
+
   int _position = 0;
+
   bool _referenceIsWithinLocalFunction = false;
+
   ScopedNameFinder(int position) {
     this._position = position;
   }
+
   Object visitBlock(Block node) {
     checkStatements(node.statements);
     return super.visitBlock(node);
   }
+
   Object visitCatchClause(CatchClause node) {
     addToScope(node.exceptionParameter);
     addToScope(node.stackTraceParameter);
     return super.visitCatchClause(node);
   }
+
   Object visitConstructorDeclaration(ConstructorDeclaration node) {
     if (_immediateChild != node.parameters) {
       addParameters(node.parameters.parameters);
     }
     declaration = node;
     return null;
   }
+
   Object visitFieldDeclaration(FieldDeclaration node) {
     declaration = node;
     return null;
   }
+
   Object visitForEachStatement(ForEachStatement node) {
     DeclaredIdentifier loopVariable = node.loopVariable;
     if (loopVariable != null) {
       addToScope(loopVariable.identifier);
     }
     return super.visitForEachStatement(node);
   }
+
   Object visitForStatement(ForStatement node) {
     if (_immediateChild != node.variables && node.variables != null) {
       addVariables(node.variables.variables);
     }
     return super.visitForStatement(node);
   }
+
   Object visitFunctionDeclaration(FunctionDeclaration node) {
     if (node.parent is! FunctionDeclarationStatement) {
       declaration = node;
       return null;
     }
     return super.visitFunctionDeclaration(node);
   }
+
   Object visitFunctionDeclarationStatement(FunctionDeclarationStatement node) {
     _referenceIsWithinLocalFunction = true;
     return super.visitFunctionDeclarationStatement(node);
   }
+
   Object visitFunctionExpression(FunctionExpression node) {
     if (node.parameters != null && _immediateChild != node.parameters) {
       addParameters(node.parameters.parameters);
     }
     return super.visitFunctionExpression(node);
   }
+
   Object visitMethodDeclaration(MethodDeclaration node) {
     declaration = node;
     if (node.parameters == null) {
       return null;
     }
     if (_immediateChild != node.parameters) {
       addParameters(node.parameters.parameters);
     }
     return null;
   }
+
   Object visitNode(ASTNode node) {
     _immediateChild = node;
     ASTNode parent = node.parent;
     if (parent != null) {
       parent.accept(this);
     }
     return null;
   }
+
   Object visitSwitchMember(SwitchMember node) {
     checkStatements(node.statements);
     return super.visitSwitchMember(node);
   }
+
   Object visitTopLevelVariableDeclaration(TopLevelVariableDeclaration node) {
     declaration = node;
     return null;
   }
+
   Object visitTypeAlias(TypeAlias node) {
     declaration = node;
     return null;
   }
+
   void addParameters(NodeList<FormalParameter> vars) {
     for (FormalParameter var2 in vars) {
       addToScope(var2.identifier);
     }
   }
+
   void addToScope(SimpleIdentifier identifier) {
     if (identifier != null && isInRange(identifier)) {
       String name = identifier.name;
       if (!locals.containsKey(name)) {
         locals[name] = identifier;
       }
     }
   }
+
   void addVariables(NodeList<VariableDeclaration> vars) {
     for (VariableDeclaration var2 in vars) {
       addToScope(var2.name);
     }
   }
 
   /**
    * Some statements define names that are visible downstream. There aren't many of these.
    *
    * @param statements the list of statements to check for name definitions
    */
   void checkStatements(List<Statement> statements) {
     for (Statement stmt in statements) {
       if (identical(stmt, _immediateChild)) {
         return;
       }
       if (stmt is VariableDeclarationStatement) {
-        addVariables(((stmt as VariableDeclarationStatement)).variables.variables);
+        addVariables((stmt as VariableDeclarationStatement).variables.variables);
       } else if (stmt is FunctionDeclarationStatement && !_referenceIsWithinLocalFunction) {
-        addToScope(((stmt as FunctionDeclarationStatement)).functionDeclaration.name);
+        addToScope((stmt as FunctionDeclarationStatement).functionDeclaration.name);
       }
     }
   }
+
   bool isInRange(ASTNode node) {
     if (_position < 0) {
       return true;
     }
     return node.end < _position;
   }
 }
 /**
  * Instances of the class {@code NodeList} represent a list of AST nodes that have a common parent.
  */
@@ skipping 119 matching lines @@
   void operator[]=(int index, E node) {
     if (index < 0 || index >= _elements.length) {
       throw new RangeError("Index: ${index}, Size: ${_elements.length}");
     }
     _elements[index] as E;
     owner.becomeParentOf(node);
     _elements[index] = node;
   }
   int get length => _elements.length;
 }