Add support for assert statements with messages to the analyzer.

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

 // Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 library engine.parser;
 
 import 'dart:collection';
 import "dart:math" as math;
 
 import 'ast.dart';
@@ skipping 71 matching lines @@
       0, (Parser target) => target.parseTypeArgumentList()),
   'parseTypeName_0':
       new MethodTrampoline(0, (Parser target) => target.parseTypeName()),
   'parseTypeParameter_0':
       new MethodTrampoline(0, (Parser target) => target.parseTypeParameter()),
   'parseTypeParameterList_0': new MethodTrampoline(
       0, (Parser target) => target.parseTypeParameterList()),
   'parseWithClause_0':
       new MethodTrampoline(0, (Parser target) => target.parseWithClause()),
   'advance_0': new MethodTrampoline(0, (Parser target) => target._advance()),
-  'appendScalarValue_5': new MethodTrampoline(5, (Parser target, arg0, arg1,
-      arg2, arg3,
-      arg4) => target._appendScalarValue(arg0, arg1, arg2, arg3, arg4)),
-  'computeStringValue_3': new MethodTrampoline(3, (Parser target, arg0, arg1,
-      arg2) => target._computeStringValue(arg0, arg1, arg2)),
+  'appendScalarValue_5': new MethodTrampoline(
+      5,
+      (Parser target, arg0, arg1, arg2, arg3, arg4) =>
+          target._appendScalarValue(arg0, arg1, arg2, arg3, arg4)),
+  'computeStringValue_3': new MethodTrampoline(
+      3,
+      (Parser target, arg0, arg1, arg2) =>
+          target._computeStringValue(arg0, arg1, arg2)),
   'convertToFunctionDeclaration_1': new MethodTrampoline(
       1, (Parser target, arg0) => target._convertToFunctionDeclaration(arg0)),
   'couldBeStartOfCompilationUnitMember_0': new MethodTrampoline(
       0, (Parser target) => target._couldBeStartOfCompilationUnitMember()),
   'createSyntheticIdentifier_0': new MethodTrampoline(
       0, (Parser target) => target._createSyntheticIdentifier()),
   'createSyntheticKeyword_1': new MethodTrampoline(
       1, (Parser target, arg0) => target._createSyntheticKeyword(arg0)),
   'createSyntheticStringLiteral_0': new MethodTrampoline(
       0, (Parser target) => target._createSyntheticStringLiteral()),
@@ skipping 45 matching lines @@
   'matchesString_1': new MethodTrampoline(
       1, (Parser target, arg0) => target._matchesString(arg0)),
   'optional_1':
       new MethodTrampoline(1, (Parser target, arg0) => target._optional(arg0)),
   'parseAdditiveExpression_0': new MethodTrampoline(
       0, (Parser target) => target._parseAdditiveExpression()),
   'parseAssertStatement_0': new MethodTrampoline(
       0, (Parser target) => target._parseAssertStatement()),
   'parseAssignableExpression_1': new MethodTrampoline(
       1, (Parser target, arg0) => target._parseAssignableExpression(arg0)),
-  'parseAssignableSelector_2': new MethodTrampoline(2, (Parser target, arg0,
-      arg1) => target._parseAssignableSelector(arg0, arg1)),
+  'parseAssignableSelector_2': new MethodTrampoline(
+      2,
+      (Parser target, arg0, arg1) =>
+          target._parseAssignableSelector(arg0, arg1)),
   'parseAwaitExpression_0': new MethodTrampoline(
       0, (Parser target) => target._parseAwaitExpression()),
   'parseBitwiseAndExpression_0': new MethodTrampoline(
       0, (Parser target) => target._parseBitwiseAndExpression()),
   'parseBitwiseXorExpression_0': new MethodTrampoline(
       0, (Parser target) => target._parseBitwiseXorExpression()),
   'parseBreakStatement_0':
       new MethodTrampoline(0, (Parser target) => target._parseBreakStatement()),
   'parseCascadeSection_0':
       new MethodTrampoline(0, (Parser target) => target._parseCascadeSection()),
   'parseClassDeclaration_2': new MethodTrampoline(2,
       (Parser target, arg0, arg1) => target._parseClassDeclaration(arg0, arg1)),
   'parseClassMembers_2': new MethodTrampoline(
       2, (Parser target, arg0, arg1) => target._parseClassMembers(arg0, arg1)),
-  'parseClassTypeAlias_3': new MethodTrampoline(3, (Parser target, arg0, arg1,
-      arg2) => target._parseClassTypeAlias(arg0, arg1, arg2)),
+  'parseClassTypeAlias_3': new MethodTrampoline(
+      3,
+      (Parser target, arg0, arg1, arg2) =>
+          target._parseClassTypeAlias(arg0, arg1, arg2)),
   'parseCombinator_0':
       new MethodTrampoline(0, (Parser target) => target.parseCombinator()),
   'parseCombinators_0':
       new MethodTrampoline(0, (Parser target) => target._parseCombinators()),
   'parseCommentAndMetadata_0': new MethodTrampoline(
       0, (Parser target) => target._parseCommentAndMetadata()),
   'parseCommentReference_2': new MethodTrampoline(2,
       (Parser target, arg0, arg1) => target._parseCommentReference(arg0, arg1)),
   'parseCommentReferences_1': new MethodTrampoline(
       1, (Parser target, arg0) => target._parseCommentReferences(arg0)),
   'parseCompilationUnitMember_1': new MethodTrampoline(
       1, (Parser target, arg0) => target._parseCompilationUnitMember(arg0)),
   'parseConstExpression_0': new MethodTrampoline(
       0, (Parser target) => target._parseConstExpression()),
-  'parseConstructor_8': new MethodTrampoline(8, (Parser target, arg0, arg1,
-          arg2, arg3, arg4, arg5, arg6, arg7) =>
-      target._parseConstructor(arg0, arg1, arg2, arg3, arg4, arg5, arg6, arg7)),
+  'parseConstructor_8': new MethodTrampoline(
+      8,
+      (Parser target, arg0, arg1, arg2, arg3, arg4, arg5, arg6, arg7) => target
+          ._parseConstructor(arg0, arg1, arg2, arg3, arg4, arg5, arg6, arg7)),
   'parseConstructorFieldInitializer_0': new MethodTrampoline(
       0, (Parser target) => target._parseConstructorFieldInitializer()),
   'parseContinueStatement_0': new MethodTrampoline(
       0, (Parser target) => target._parseContinueStatement()),
   'parseDirective_1': new MethodTrampoline(
       1, (Parser target, arg0) => target._parseDirective(arg0)),
   'parseDirectives_0':
       new MethodTrampoline(0, (Parser target) => target._parseDirectives()),
   'parseDocumentationComment_0': new MethodTrampoline(
       0, (Parser target) => target._parseDocumentationComment()),
@@ skipping 10 matching lines @@
   'parseExportDirective_1': new MethodTrampoline(
       1, (Parser target, arg0) => target._parseExportDirective(arg0)),
   'parseExpressionList_0':
       new MethodTrampoline(0, (Parser target) => target._parseExpressionList()),
   'parseFinalConstVarOrType_1': new MethodTrampoline(
       1, (Parser target, arg0) => target._parseFinalConstVarOrType(arg0)),
   'parseFormalParameter_1': new MethodTrampoline(
       1, (Parser target, arg0) => target._parseFormalParameter(arg0)),
   'parseForStatement_0':
       new MethodTrampoline(0, (Parser target) => target._parseForStatement()),
-  'parseFunctionBody_3': new MethodTrampoline(3, (Parser target, arg0, arg1,
-      arg2) => target._parseFunctionBody(arg0, arg1, arg2)),
-  'parseFunctionDeclaration_3': new MethodTrampoline(3, (Parser target, arg0,
-      arg1, arg2) => target._parseFunctionDeclaration(arg0, arg1, arg2)),
+  'parseFunctionBody_3': new MethodTrampoline(
+      3,
+      (Parser target, arg0, arg1, arg2) =>
+          target._parseFunctionBody(arg0, arg1, arg2)),
+  'parseFunctionDeclaration_3': new MethodTrampoline(
+      3,
+      (Parser target, arg0, arg1, arg2) =>
+          target._parseFunctionDeclaration(arg0, arg1, arg2)),
   'parseFunctionDeclarationStatement_0': new MethodTrampoline(
       0, (Parser target) => target._parseFunctionDeclarationStatement()),
-  'parseFunctionDeclarationStatementAfterReturnType_2': new MethodTrampoline(2,
+  'parseFunctionDeclarationStatementAfterReturnType_2': new MethodTrampoline(
+      2,
       (Parser target, arg0, arg1) =>
           target._parseFunctionDeclarationStatementAfterReturnType(arg0, arg1)),
-  'parseFunctionTypeAlias_2': new MethodTrampoline(2, (Parser target, arg0,
-      arg1) => target._parseFunctionTypeAlias(arg0, arg1)),
-  'parseGetter_4': new MethodTrampoline(4, (Parser target, arg0, arg1, arg2,
-      arg3) => target._parseGetter(arg0, arg1, arg2, arg3)),
+  'parseFunctionTypeAlias_2': new MethodTrampoline(
+      2,
+      (Parser target, arg0, arg1) =>
+          target._parseFunctionTypeAlias(arg0, arg1)),
+  'parseGetter_4': new MethodTrampoline(
+      4,
+      (Parser target, arg0, arg1, arg2, arg3) =>
+          target._parseGetter(arg0, arg1, arg2, arg3)),
   'parseIdentifierList_0':
       new MethodTrampoline(0, (Parser target) => target._parseIdentifierList()),
   'parseIfStatement_0':
       new MethodTrampoline(0, (Parser target) => target._parseIfStatement()),
   'parseImportDirective_1': new MethodTrampoline(
       1, (Parser target, arg0) => target._parseImportDirective(arg0)),
-  'parseInitializedIdentifierList_4': new MethodTrampoline(4,
+  'parseInitializedIdentifierList_4': new MethodTrampoline(
+      4,
       (Parser target, arg0, arg1, arg2, arg3) =>
           target._parseInitializedIdentifierList(arg0, arg1, arg2, arg3)),
   'parseInstanceCreationExpression_1': new MethodTrampoline(1,
       (Parser target, arg0) => target._parseInstanceCreationExpression(arg0)),
   'parseLibraryDirective_1': new MethodTrampoline(
       1, (Parser target, arg0) => target._parseLibraryDirective(arg0)),
   'parseLibraryName_2': new MethodTrampoline(
       2, (Parser target, arg0, arg1) => target._parseLibraryName(arg0, arg1)),
   'parseListLiteral_2': new MethodTrampoline(
       2, (Parser target, arg0, arg1) => target._parseListLiteral(arg0, arg1)),
   'parseListOrMapLiteral_1': new MethodTrampoline(
       1, (Parser target, arg0) => target._parseListOrMapLiteral(arg0)),
   'parseLogicalAndExpression_0': new MethodTrampoline(
       0, (Parser target) => target._parseLogicalAndExpression()),
   'parseMapLiteral_2': new MethodTrampoline(
       2, (Parser target, arg0, arg1) => target._parseMapLiteral(arg0, arg1)),
-  'parseMethodDeclarationAfterParameters_7': new MethodTrampoline(7,
-      (Parser target, arg0, arg1, arg2, arg3, arg4, arg5, arg6) => target
-          ._parseMethodDeclarationAfterParameters(
+  'parseMethodDeclarationAfterParameters_7': new MethodTrampoline(
+      7,
+      (Parser target, arg0, arg1, arg2, arg3, arg4, arg5, arg6) =>
+          target._parseMethodDeclarationAfterParameters(
               arg0, arg1, arg2, arg3, arg4, arg5, arg6)),
-  'parseMethodDeclarationAfterReturnType_4': new MethodTrampoline(4,
+  'parseMethodDeclarationAfterReturnType_4': new MethodTrampoline(
+      4,
       (Parser target, arg0, arg1, arg2, arg3) => target
           ._parseMethodDeclarationAfterReturnType(arg0, arg1, arg2, arg3)),
   'parseModifiers_0':
       new MethodTrampoline(0, (Parser target) => target._parseModifiers()),
   'parseMultiplicativeExpression_0': new MethodTrampoline(
       0, (Parser target) => target._parseMultiplicativeExpression()),
   'parseNativeClause_0':
       new MethodTrampoline(0, (Parser target) => target._parseNativeClause()),
   'parseNewExpression_0':
       new MethodTrampoline(0, (Parser target) => target._parseNewExpression()),
   'parseNonLabeledStatement_0': new MethodTrampoline(
       0, (Parser target) => target._parseNonLabeledStatement()),
-  'parseOperator_3': new MethodTrampoline(3, (Parser target, arg0, arg1,
-      arg2) => target._parseOperator(arg0, arg1, arg2)),
+  'parseOperator_3': new MethodTrampoline(
+      3,
+      (Parser target, arg0, arg1, arg2) =>
+          target._parseOperator(arg0, arg1, arg2)),
   'parseOptionalReturnType_0': new MethodTrampoline(
       0, (Parser target) => target._parseOptionalReturnType()),
   'parsePartDirective_1': new MethodTrampoline(
       1, (Parser target, arg0) => target._parsePartDirective(arg0)),
   'parsePostfixExpression_0': new MethodTrampoline(
       0, (Parser target) => target._parsePostfixExpression()),
   'parsePrimaryExpression_0': new MethodTrampoline(
       0, (Parser target) => target._parsePrimaryExpression()),
   'parseRedirectingConstructorInvocation_0': new MethodTrampoline(
       0, (Parser target) => target._parseRedirectingConstructorInvocation()),
   'parseRelationalExpression_0': new MethodTrampoline(
       0, (Parser target) => target._parseRelationalExpression()),
   'parseRethrowExpression_0': new MethodTrampoline(
       0, (Parser target) => target._parseRethrowExpression()),
   'parseReturnStatement_0': new MethodTrampoline(
       0, (Parser target) => target._parseReturnStatement()),
-  'parseSetter_4': new MethodTrampoline(4, (Parser target, arg0, arg1, arg2,
-      arg3) => target._parseSetter(arg0, arg1, arg2, arg3)),
+  'parseSetter_4': new MethodTrampoline(
+      4,
+      (Parser target, arg0, arg1, arg2, arg3) =>
+          target._parseSetter(arg0, arg1, arg2, arg3)),
   'parseShiftExpression_0': new MethodTrampoline(
       0, (Parser target) => target._parseShiftExpression()),
   'parseStatementList_0':
       new MethodTrampoline(0, (Parser target) => target._parseStatementList()),
   'parseStringInterpolation_1': new MethodTrampoline(
       1, (Parser target, arg0) => target._parseStringInterpolation(arg0)),
   'parseSuperConstructorInvocation_0': new MethodTrampoline(
       0, (Parser target) => target._parseSuperConstructorInvocation()),
   'parseSwitchStatement_0': new MethodTrampoline(
       0, (Parser target) => target._parseSwitchStatement()),
   'parseSymbolLiteral_0':
       new MethodTrampoline(0, (Parser target) => target._parseSymbolLiteral()),
   'parseThrowExpression_0': new MethodTrampoline(
       0, (Parser target) => target._parseThrowExpression()),
   'parseThrowExpressionWithoutCascade_0': new MethodTrampoline(
       0, (Parser target) => target._parseThrowExpressionWithoutCascade()),
   'parseTryStatement_0':
       new MethodTrampoline(0, (Parser target) => target._parseTryStatement()),
   'parseTypeAlias_1': new MethodTrampoline(
       1, (Parser target, arg0) => target._parseTypeAlias(arg0)),
   'parseUnaryExpression_0': new MethodTrampoline(
       0, (Parser target) => target._parseUnaryExpression()),
   'parseVariableDeclaration_0': new MethodTrampoline(
       0, (Parser target) => target._parseVariableDeclaration()),
-  'parseVariableDeclarationListAfterMetadata_1': new MethodTrampoline(1,
+  'parseVariableDeclarationListAfterMetadata_1': new MethodTrampoline(
+      1,
       (Parser target, arg0) =>
           target._parseVariableDeclarationListAfterMetadata(arg0)),
-  'parseVariableDeclarationListAfterType_3': new MethodTrampoline(3,
+  'parseVariableDeclarationListAfterType_3': new MethodTrampoline(
+      3,
       (Parser target, arg0, arg1, arg2) =>
           target._parseVariableDeclarationListAfterType(arg0, arg1, arg2)),
-  'parseVariableDeclarationStatementAfterMetadata_1': new MethodTrampoline(1,
+  'parseVariableDeclarationStatementAfterMetadata_1': new MethodTrampoline(
+      1,
       (Parser target, arg0) =>
           target._parseVariableDeclarationStatementAfterMetadata(arg0)),
-  'parseVariableDeclarationStatementAfterType_3': new MethodTrampoline(3,
+  'parseVariableDeclarationStatementAfterType_3': new MethodTrampoline(
+      3,
       (Parser target, arg0, arg1, arg2) =>
           target._parseVariableDeclarationStatementAfterType(arg0, arg1, arg2)),
   'parseWhileStatement_0':
       new MethodTrampoline(0, (Parser target) => target._parseWhileStatement()),
   'parseYieldStatement_0':
       new MethodTrampoline(0, (Parser target) => target._parseYieldStatement()),
   'peek_0': new MethodTrampoline(0, (Parser target) => target._peek()),
   'peekAt_1':
       new MethodTrampoline(1, (Parser target, arg0) => target._peekAt(arg0)),
   'reportError_1': new MethodTrampoline(
       1, (Parser target, arg0) => target._reportError(arg0)),
-  'reportErrorForCurrentToken_2': new MethodTrampoline(2, (Parser target, arg0,
-      arg1) => target._reportErrorForCurrentToken(arg0, arg1)),
-  'reportErrorForNode_3': new MethodTrampoline(3, (Parser target, arg0, arg1,
-      arg2) => target._reportErrorForNode(arg0, arg1, arg2)),
-  'reportErrorForToken_3': new MethodTrampoline(3, (Parser target, arg0, arg1,
-      arg2) => target._reportErrorForToken(arg0, arg1, arg2)),
+  'reportErrorForCurrentToken_2': new MethodTrampoline(
+      2,
+      (Parser target, arg0, arg1) =>
+          target._reportErrorForCurrentToken(arg0, arg1)),
+  'reportErrorForNode_3': new MethodTrampoline(
+      3,
+      (Parser target, arg0, arg1, arg2) =>
+          target._reportErrorForNode(arg0, arg1, arg2)),
+  'reportErrorForToken_3': new MethodTrampoline(
+      3,
+      (Parser target, arg0, arg1, arg2) =>
+          target._reportErrorForToken(arg0, arg1, arg2)),
   'skipBlock_0':
       new MethodTrampoline(0, (Parser target) => target._skipBlock()),
   'skipFinalConstVarOrType_1': new MethodTrampoline(
       1, (Parser target, arg0) => target._skipFinalConstVarOrType(arg0)),
   'skipFormalParameterList_1': new MethodTrampoline(
       1, (Parser target, arg0) => target._skipFormalParameterList(arg0)),
   'skipPastMatchingToken_1': new MethodTrampoline(
       1, (Parser target, arg0) => target._skipPastMatchingToken(arg0)),
   'skipPrefixedIdentifier_1': new MethodTrampoline(
       1, (Parser target, arg0) => target._skipPrefixedIdentifier(arg0)),
@@ skipping 12 matching lines @@
   'skipTypeParameterList_1': new MethodTrampoline(
       1, (Parser target, arg0) => target._skipTypeParameterList(arg0)),
   'tokenMatches_2': new MethodTrampoline(
       2, (Parser target, arg0, arg1) => target._tokenMatches(arg0, arg1)),
   'tokenMatchesIdentifier_1': new MethodTrampoline(
       1, (Parser target, arg0) => target._tokenMatchesIdentifier(arg0)),
   'tokenMatchesKeyword_2': new MethodTrampoline(2,
       (Parser target, arg0, arg1) => target._tokenMatchesKeyword(arg0, arg1)),
   'tokenMatchesString_2': new MethodTrampoline(
       2, (Parser target, arg0, arg1) => target._tokenMatchesString(arg0, arg1)),
-  'translateCharacter_3': new MethodTrampoline(3, (Parser target, arg0, arg1,
-      arg2) => target._translateCharacter(arg0, arg1, arg2)),
+  'translateCharacter_3': new MethodTrampoline(
+      3,
+      (Parser target, arg0, arg1, arg2) =>
+          target._translateCharacter(arg0, arg1, arg2)),
   'unlockErrorListener_0':
       new MethodTrampoline(0, (Parser target) => target._unlockErrorListener()),
   'validateFormalParameterList_1': new MethodTrampoline(
       1, (Parser target, arg0) => target._validateFormalParameterList(arg0)),
   'validateModifiersForClass_1': new MethodTrampoline(
       1, (Parser target, arg0) => target._validateModifiersForClass(arg0)),
   'validateModifiersForConstructor_1': new MethodTrampoline(1,
       (Parser target, arg0) => target._validateModifiersForConstructor(arg0)),
   'validateModifiersForEnum_1': new MethodTrampoline(
       1, (Parser target, arg0) => target._validateModifiersForEnum(arg0)),
   'validateModifiersForField_1': new MethodTrampoline(
       1, (Parser target, arg0) => target._validateModifiersForField(arg0)),
-  'validateModifiersForFunctionDeclarationStatement_1': new MethodTrampoline(1,
+  'validateModifiersForFunctionDeclarationStatement_1': new MethodTrampoline(
+      1,
       (Parser target, arg0) =>
           target._validateModifiersForFunctionDeclarationStatement(arg0)),
-  'validateModifiersForGetterOrSetterOrMethod_1': new MethodTrampoline(1,
+  'validateModifiersForGetterOrSetterOrMethod_1': new MethodTrampoline(
+      1,
       (Parser target, arg0) =>
           target._validateModifiersForGetterOrSetterOrMethod(arg0)),
   'validateModifiersForOperator_1': new MethodTrampoline(
       1, (Parser target, arg0) => target._validateModifiersForOperator(arg0)),
-  'validateModifiersForTopLevelDeclaration_1': new MethodTrampoline(1,
+  'validateModifiersForTopLevelDeclaration_1': new MethodTrampoline(
+      1,
       (Parser target, arg0) =>
           target._validateModifiersForTopLevelDeclaration(arg0)),
-  'validateModifiersForTopLevelFunction_1': new MethodTrampoline(1,
+  'validateModifiersForTopLevelFunction_1': new MethodTrampoline(
+      1,
       (Parser target, arg0) =>
           target._validateModifiersForTopLevelFunction(arg0)),
-  'validateModifiersForTopLevelVariable_1': new MethodTrampoline(1,
+  'validateModifiersForTopLevelVariable_1': new MethodTrampoline(
+      1,
       (Parser target, arg0) =>
           target._validateModifiersForTopLevelVariable(arg0)),
   'validateModifiersForTypedef_1': new MethodTrampoline(
       1, (Parser target, arg0) => target._validateModifiersForTypedef(arg0)),
 };
 
 Object invokeParserMethodImpl(
     Parser parser, String methodName, List<Object> objects, Token tokenStream) {
   parser.currentToken = tokenStream;
   MethodTrampoline method =
@@ skipping 1200 matching lines @@
    */
   final TokenMap _tokenMap;
 
   /**
    * The error listener that will be informed of any errors that are found
    * during the parse.
    */
   final AnalysisErrorListener _errorListener;
 
   /**
+   * A flag indicating whether the parser is to allow assertions with messages
+   * (DEP 37).
+   */
+  final bool enableAssertMessage;
+
+  /**
    * The node in the AST structure that contains the revised content.
    */
   AstNode _updatedNode;
 
   /**
    * Initialize a newly created incremental parser to parse a portion of the
    * content of the given [_source]. The [_tokenMap] is a map from old tokens to
    * new tokens that is used during the cloning process. The [_errorListener]
    * will be informed of any errors that are found during the parse.
    */
-  IncrementalParser(this._source, this._tokenMap, this._errorListener);
+  IncrementalParser(this._source, this._tokenMap, this._errorListener,
+      {this.enableAssertMessage: false});
 
   /**
    * Return the node in the AST structure that contains the revised content.
    */
   AstNode get updatedNode => _updatedNode;
 
   /**
    * Given a range of tokens that were re-scanned, re-parse the minimum number
    * of tokens to produce a consistent AST structure. The range is represented
    * by the first and last tokens in the range.
@@ skipping 34 matching lines @@
     // Find the token at which parsing is to begin.
     //
     int originalOffset = oldNode.offset;
     Token parseToken = _findTokenAt(firstToken, originalOffset);
     if (parseToken == null) {
       return null;
     }
     //
     // Parse the appropriate AST structure starting at the appropriate place.
     //
-    Parser parser = new Parser(_source, _errorListener);
+    Parser parser = new Parser(_source, _errorListener,
+        enableAssertMessage: enableAssertMessage);
     parser.currentToken = parseToken;
     while (newNode == null) {
       AstNode parent = oldNode.parent;
       if (parent == null) {
         parseToken = _findFirstToken(parseToken);
         parser.currentToken = parseToken;
         return parser.parseCompilationUnit2();
       }
       bool advanceToParent = false;
       try {
@@ skipping 329 matching lines @@
    * An [errorListener] lock, if more than `0`, then errors are not reported.
    */
   int _errorListenerLock = 0;
 
   /**
    * A flag indicating whether parser is to parse function bodies.
    */
   bool _parseFunctionBodies = true;
 
   /**
+   * A flag indicating whether the parser is to allow assertions with messages
+   * (DEP 37).
+   */
+  final bool enableAssertMessage;
+
+  /**
    * The next token to be parsed.
    */
   Token _currentToken;
 
   /**
    * A flag indicating whether the parser is currently in a function body marked
    * as being 'async'.
    */
   bool _inAsync = false;
 
@@ skipping 22 matching lines @@
   /**
    * A flag indicating whether the parser is to parse generic method syntax.
    */
   bool parseGenericMethods = false;
 
   /**
    * Initialize a newly created parser to parse the content of the given
    * [_source] and to report any errors that are found to the given
    * [_errorListener].
    */
-  Parser(this._source, this._errorListener);
+  Parser(this._source, this._errorListener, {this.enableAssertMessage: false});
 
   void set currentToken(Token currentToken) {
     this._currentToken = currentToken;
   }
 
   /**
    * Return `true` if the current token is the first token of a return type that
    * is followed by an identifier, possibly followed by a list of type
    * parameters, followed by a left-parenthesis. This is used by
    * [_parseTypeAlias] to determine whether or not to parse a return type.
@@ skipping 221 matching lines @@
           _tokenMatchesIdentifier(_peek())) {
         _validateModifiersForGetterOrSetterOrMethod(modifiers);
         return _parseSetter(commentAndMetadata, modifiers.externalKeyword,
             modifiers.staticKeyword, returnType);
       } else if (_matchesKeyword(Keyword.OPERATOR) && _isOperator(_peek())) {
         _validateModifiersForOperator(modifiers);
         return _parseOperator(
             commentAndMetadata, modifiers.externalKeyword, returnType);
       } else if (_matchesIdentifier() &&
           _peek().matchesAny([
-        TokenType.OPEN_PAREN,
-        TokenType.OPEN_CURLY_BRACKET,
-        TokenType.FUNCTION,
-        TokenType.LT
-      ])) {
+            TokenType.OPEN_PAREN,
+            TokenType.OPEN_CURLY_BRACKET,
+            TokenType.FUNCTION,
+            TokenType.LT
+          ])) {
         _validateModifiersForGetterOrSetterOrMethod(modifiers);
         return _parseMethodDeclarationAfterReturnType(commentAndMetadata,
             modifiers.externalKeyword, modifiers.staticKeyword, returnType);
       } else {
         //
         // We have found an error of some kind. Try to recover.
         //
         if (_matchesIdentifier()) {
           if (_peek().matchesAny(
               [TokenType.EQ, TokenType.COMMA, TokenType.SEMICOLON])) {
             //
             // We appear to have a variable declaration with a type of "void".
             //
             _reportErrorForNode(ParserErrorCode.VOID_VARIABLE, returnType);
-            return _parseInitializedIdentifierList(commentAndMetadata,
-                modifiers.staticKeyword, _validateModifiersForField(modifiers),
+            return _parseInitializedIdentifierList(
+                commentAndMetadata,
+                modifiers.staticKeyword,
+                _validateModifiersForField(modifiers),
                 returnType);
           }
         }
         if (_isOperator(_currentToken)) {
           //
           // We appear to have found an operator declaration without the
           // 'operator' keyword.
           //
           _validateModifiersForOperator(modifiers);
           return _parseOperator(
@@ skipping 57 matching lines @@
         keyword = modifiers.constKeyword;
       }
       if (keyword != null) {
         //
         // We appear to have found an incomplete field declaration.
         //
         _reportErrorForCurrentToken(ParserErrorCode.MISSING_IDENTIFIER);
         List<VariableDeclaration> variables = new List<VariableDeclaration>();
         variables.add(
             new VariableDeclaration(_createSyntheticIdentifier(), null, null));
-        return new FieldDeclaration(commentAndMetadata.comment,
-            commentAndMetadata.metadata, null,
+        return new FieldDeclaration(
+            commentAndMetadata.comment,
+            commentAndMetadata.metadata,
+            null,
             new VariableDeclarationList(null, null, keyword, null, variables),
             _expectSemicolon());
       }
       _reportErrorForToken(
           ParserErrorCode.EXPECTED_CLASS_MEMBER, _currentToken);
       if (commentAndMetadata.comment != null ||
           !commentAndMetadata.metadata.isEmpty) {
         //
         // We appear to have found an incomplete declaration at the end of the
         // class. At this point it consists of a metadata, which we don't want
         // to loose, so we'll treat it as a method declaration with a missing
         // name, parameters and empty body.
         //
-        return new MethodDeclaration(commentAndMetadata.comment,
-            commentAndMetadata.metadata, null, null, null, null, null,
-            _createSyntheticIdentifier(), null, new FormalParameterList(
+        return new MethodDeclaration(
+            commentAndMetadata.comment,
+            commentAndMetadata.metadata,
+            null,
+            null,
+            null,
+            null,
+            null,
+            _createSyntheticIdentifier(),
+            null,
+            new FormalParameterList(
                 null, new List<FormalParameter>(), null, null, null),
             new EmptyFunctionBody(_createSyntheticToken(TokenType.SEMICOLON)));
       }
       return null;
     } else if (_tokenMatches(_peek(), TokenType.PERIOD) &&
         _tokenMatchesIdentifier(_peekAt(2)) &&
         _tokenMatches(_peekAt(3), TokenType.OPEN_PAREN)) {
-      return _parseConstructor(commentAndMetadata, modifiers.externalKeyword,
-          _validateModifiersForConstructor(modifiers), modifiers.factoryKeyword,
-          parseSimpleIdentifier(), getAndAdvance(), parseSimpleIdentifier(),
+      return _parseConstructor(
+          commentAndMetadata,
+          modifiers.externalKeyword,
+          _validateModifiersForConstructor(modifiers),
+          modifiers.factoryKeyword,
+          parseSimpleIdentifier(),
+          getAndAdvance(),
+          parseSimpleIdentifier(),
           parseFormalParameterList());
     } else if (_tokenMatches(_peek(), TokenType.OPEN_PAREN)) {
       SimpleIdentifier methodName = parseSimpleIdentifier();
       FormalParameterList parameters = parseFormalParameterList();
       if (_matches(TokenType.COLON) ||
           modifiers.factoryKeyword != null ||
           methodName.name == className) {
-        return _parseConstructor(commentAndMetadata, modifiers.externalKeyword,
+        return _parseConstructor(
+            commentAndMetadata,
+            modifiers.externalKeyword,
             _validateModifiersForConstructor(modifiers),
-            modifiers.factoryKeyword, methodName, null, null, parameters);
+            modifiers.factoryKeyword,
+            methodName,
+            null,
+            null,
+            parameters);
       }
       _validateModifiersForGetterOrSetterOrMethod(modifiers);
       _validateFormalParameterList(parameters);
-      return _parseMethodDeclarationAfterParameters(commentAndMetadata,
-          modifiers.externalKeyword, modifiers.staticKeyword, null, methodName,
-          null, parameters);
+      return _parseMethodDeclarationAfterParameters(
+          commentAndMetadata,
+          modifiers.externalKeyword,
+          modifiers.staticKeyword,
+          null,
+          methodName,
+          null,
+          parameters);
     } else if (_peek()
         .matchesAny([TokenType.EQ, TokenType.COMMA, TokenType.SEMICOLON])) {
       if (modifiers.constKeyword == null &&
           modifiers.finalKeyword == null &&
           modifiers.varKeyword == null) {
         _reportErrorForCurrentToken(
             ParserErrorCode.MISSING_CONST_FINAL_VAR_OR_TYPE);
       }
       return _parseInitializedIdentifierList(commentAndMetadata,
           modifiers.staticKeyword, _validateModifiersForField(modifiers), null);
@@ skipping 24 matching lines @@
       _validateModifiersForOperator(modifiers);
       return _parseOperator(
           commentAndMetadata, modifiers.externalKeyword, type);
     } else if (!_matchesIdentifier()) {
       if (_matches(TokenType.CLOSE_CURLY_BRACKET)) {
         //
         // We appear to have found an incomplete declaration at the end of the
         // class. At this point it consists of a type name, so we'll treat it as
         // a field declaration with a missing field name and semicolon.
         //
-        return _parseInitializedIdentifierList(commentAndMetadata,
-            modifiers.staticKeyword, _validateModifiersForField(modifiers),
+        return _parseInitializedIdentifierList(
+            commentAndMetadata,
+            modifiers.staticKeyword,
+            _validateModifiersForField(modifiers),
             type);
       }
       if (_isOperator(_currentToken)) {
         //
         // We appear to have found an operator declaration without the
         // 'operator' keyword.
         //
         _validateModifiersForOperator(modifiers);
         return _parseOperator(
             commentAndMetadata, modifiers.externalKeyword, type);
       }
       //
       // We appear to have found an incomplete declaration before another
       // declaration. At this point it consists of a type name, so we'll treat
       // it as a field declaration with a missing field name and semicolon.
       //
       _reportErrorForToken(
           ParserErrorCode.EXPECTED_CLASS_MEMBER, _currentToken);
       try {
         _lockErrorListener();
-        return _parseInitializedIdentifierList(commentAndMetadata,
-            modifiers.staticKeyword, _validateModifiersForField(modifiers),
+        return _parseInitializedIdentifierList(
+            commentAndMetadata,
+            modifiers.staticKeyword,
+            _validateModifiersForField(modifiers),
             type);
       } finally {
         _unlockErrorListener();
       }
     } else if (_tokenMatches(_peek(), TokenType.OPEN_PAREN)) {
       SimpleIdentifier methodName = parseSimpleIdentifier();
       FormalParameterList parameters = parseFormalParameterList();
       if (methodName.name == className) {
         _reportErrorForNode(ParserErrorCode.CONSTRUCTOR_WITH_RETURN_TYPE, type);
-        return _parseConstructor(commentAndMetadata, modifiers.externalKeyword,
+        return _parseConstructor(
+            commentAndMetadata,
+            modifiers.externalKeyword,
             _validateModifiersForConstructor(modifiers),
-            modifiers.factoryKeyword, methodName, null, null, parameters);
+            modifiers.factoryKeyword,
+            methodName,
+            null,
+            null,
+            parameters);
       }
       _validateModifiersForGetterOrSetterOrMethod(modifiers);
       _validateFormalParameterList(parameters);
-      return _parseMethodDeclarationAfterParameters(commentAndMetadata,
-          modifiers.externalKeyword, modifiers.staticKeyword, type, methodName,
-          null, parameters);
+      return _parseMethodDeclarationAfterParameters(
+          commentAndMetadata,
+          modifiers.externalKeyword,
+          modifiers.staticKeyword,
+          type,
+          methodName,
+          null,
+          parameters);
     } else if (parseGenericMethods && _tokenMatches(_peek(), TokenType.LT)) {
       return _parseMethodDeclarationAfterReturnType(commentAndMetadata,
           modifiers.externalKeyword, modifiers.staticKeyword, type);
     } else if (_tokenMatches(_peek(), TokenType.OPEN_CURLY_BRACKET)) {
       // We have found "TypeName identifier {", and are guessing that this is a
       // getter without the keyword 'get'.
       _validateModifiersForGetterOrSetterOrMethod(modifiers);
       _reportErrorForCurrentToken(ParserErrorCode.MISSING_GET);
       _currentToken = _injectToken(
           new Parser_SyntheticKeywordToken(Keyword.GET, _currentToken.offset));
@@ skipping 616 matching lines @@
     if (parseGenericMethods && _matches(TokenType.LT)) {
       typeParameters = parseTypeParameterList();
     }
     if (_matches(TokenType.OPEN_PAREN)) {
       FormalParameterList parameters = parseFormalParameterList();
       if (thisKeyword == null) {
         if (holder.keyword != null) {
           _reportErrorForToken(
               ParserErrorCode.FUNCTION_TYPED_PARAMETER_VAR, holder.keyword);
         }
-        return new FunctionTypedFormalParameter(commentAndMetadata.comment,
-            commentAndMetadata.metadata, holder.type, identifier,
-            typeParameters, parameters);
+        return new FunctionTypedFormalParameter(
+            commentAndMetadata.comment,
+            commentAndMetadata.metadata,
+            holder.type,
+            identifier,
+            typeParameters,
+            parameters);
       } else {
-        return new FieldFormalParameter(commentAndMetadata.comment,
-            commentAndMetadata.metadata, holder.keyword, holder.type,
-            thisKeyword, period, identifier, typeParameters, parameters);
+        return new FieldFormalParameter(
+            commentAndMetadata.comment,
+            commentAndMetadata.metadata,
+            holder.keyword,
+            holder.type,
+            thisKeyword,
+            period,
+            identifier,
+            typeParameters,
+            parameters);
       }
     } else if (typeParameters != null) {
       // TODO(brianwilkerson) Report an error. It looks like a function-typed
       // parameter with no parameter list.
       //_reportErrorForToken(ParserErrorCode.MISSING_PARAMETERS, typeParameters.endToken);
     }
     TypeName type = holder.type;
     if (type != null) {
       if (_tokenMatchesKeyword(type.name.beginToken, Keyword.VOID)) {
         _reportErrorForToken(
             ParserErrorCode.VOID_PARAMETER, type.name.beginToken);
       } else if (holder.keyword != null &&
           _tokenMatchesKeyword(holder.keyword, Keyword.VAR)) {
         _reportErrorForToken(ParserErrorCode.VAR_AND_TYPE, holder.keyword);
       }
     }
     if (thisKeyword != null) {
       // TODO(brianwilkerson) If there are type parameters but no parameters,
       // should we create a synthetic empty parameter list here so we can
       // capture the type parameters?
-      return new FieldFormalParameter(commentAndMetadata.comment,
-          commentAndMetadata.metadata, holder.keyword, holder.type, thisKeyword,
-          period, identifier, null, null);
+      return new FieldFormalParameter(
+          commentAndMetadata.comment,
+          commentAndMetadata.metadata,
+          holder.keyword,
+          holder.type,
+          thisKeyword,
+          period,
+          identifier,
+          null,
+          null);
     }
     return new SimpleFormalParameter(commentAndMetadata.comment,
         commentAndMetadata.metadata, holder.keyword, holder.type, identifier);
   }
 
   /**
    * Parse a prefixed identifier. Return the prefixed identifier that was
    * parsed.
    *
    *     prefixedIdentifier ::=
@@ skipping 266 matching lines @@
     }
     return buffer.toString();
   }
 
   /**
    * Convert the given [method] declaration into the nearest valid top-level
    * function declaration (that is, the function declaration that most closely
    * captures the components of the given method declaration).
    */
   FunctionDeclaration _convertToFunctionDeclaration(MethodDeclaration method) =>
-      new FunctionDeclaration(method.documentationComment, method.metadata,
-          method.externalKeyword, method.returnType, method.propertyKeyword,
-          method.name, new FunctionExpression(
+      new FunctionDeclaration(
+          method.documentationComment,
+          method.metadata,
+          method.externalKeyword,
+          method.returnType,
+          method.propertyKeyword,
+          method.name,
+          new FunctionExpression(
               method.typeParameters, method.parameters, method.body));
 
   /**
    * Return `true` if the current token could be the start of a compilation unit
    * member. This method is used for recovery purposes to decide when to stop
    * skipping tokens after finding an error while parsing a compilation unit
    * member.
    */
   bool _couldBeStartOfCompilationUnitMember() {
     if ((_matchesKeyword(Keyword.IMPORT) ||
@@ skipping 662 matching lines @@
     } else if (expression is CascadeExpression) {
       _reportErrorForNode(
           ParserErrorCode.ASSERT_DOES_NOT_TAKE_CASCADE, expression);
     } else if (expression is ThrowExpression) {
       _reportErrorForNode(
           ParserErrorCode.ASSERT_DOES_NOT_TAKE_THROW, expression);
     } else if (expression is RethrowExpression) {
       _reportErrorForNode(
           ParserErrorCode.ASSERT_DOES_NOT_TAKE_RETHROW, expression);
     }
+    Token comma;
+    Expression message;
+    if (enableAssertMessage && _matches(TokenType.COMMA)) {

[Brian Wilkerson, 2015/09/02 15:49:16]

An alternative would be to always parse the message and produce an error if the
message isn't currently enabled. That might help with recovery, but I'm not sure
which is better.

[Paul Berry, 2015/09/02 17:20:03]

I like this idea.  I'll rework the CL.

+      comma = getAndAdvance();
+      message = parseExpression2();
+    }
     Token rightParen = _expect(TokenType.CLOSE_PAREN);
     Token semicolon = _expect(TokenType.SEMICOLON);
     return new AssertStatement(
-        keyword, leftParen, expression, rightParen, semicolon);
+        keyword, leftParen, expression, rightParen, semicolon,
+        comma: comma, message: message);
   }
 
   /**
    * Parse an assignable expression. The [primaryAllowed] is `true` if the
    * expression is allowed to be a primary without any assignable selector.
    * Return the assignable expression that was parsed.
    *
    *     assignableExpression ::=
    *         primary (arguments* assignableSelector)+
    *       | 'super' unconditionalAssignableSelector
    *       | identifier
    */
   Expression _parseAssignableExpression(bool primaryAllowed) {
     if (_matchesKeyword(Keyword.SUPER)) {
       return _parseAssignableSelector(
-          new SuperExpression(getAndAdvance()), false, allowConditional: false);
+          new SuperExpression(getAndAdvance()), false,
+          allowConditional: false);
     }
     //
     // A primary expression can start with an identifier. We resolve the
     // ambiguity by determining whether the primary consists of anything other
     // than an identifier and/or is followed by an assignableSelector.
     //
     Expression expression = _parsePrimaryExpression();
     bool isOptional = primaryAllowed || expression is SimpleIdentifier;
     while (true) {
       while (_isLikelyParameterList()) {
         TypeArgumentList typeArguments = null;
         if (_matches(TokenType.LT)) {
           typeArguments = parseTypeArgumentList();
         }
         ArgumentList argumentList = parseArgumentList();
         if (expression is SimpleIdentifier) {
           expression = new MethodInvocation(null, null,
               expression as SimpleIdentifier, typeArguments, argumentList);
         } else if (expression is PrefixedIdentifier) {
           PrefixedIdentifier identifier = expression as PrefixedIdentifier;
-          expression = new MethodInvocation(identifier.prefix,
-              identifier.period, identifier.identifier, typeArguments,
+          expression = new MethodInvocation(
+              identifier.prefix,
+              identifier.period,
+              identifier.identifier,
+              typeArguments,
               argumentList);
         } else if (expression is PropertyAccess) {
           PropertyAccess access = expression as PropertyAccess;
           expression = new MethodInvocation(access.target, access.operator,
               access.propertyName, typeArguments, argumentList);
         } else {
           expression = new FunctionExpressionInvocation(
               expression, typeArguments, argumentList);
         }
         if (!primaryAllowed) {
@@ skipping 214 matching lines @@
       if (!identical(selector, expression)) {
         expression = selector;
         progress = true;
         while (_isLikelyParameterList()) {
           TypeArgumentList typeArguments = null;
           if (_matches(TokenType.LT)) {
             typeArguments = parseTypeArgumentList();
           }
           if (expression is PropertyAccess) {
             PropertyAccess propertyAccess = expression as PropertyAccess;
-            expression = new MethodInvocation(propertyAccess.target,
-                propertyAccess.operator, propertyAccess.propertyName,
-                typeArguments, parseArgumentList());
+            expression = new MethodInvocation(
+                propertyAccess.target,
+                propertyAccess.operator,
+                propertyAccess.propertyName,
+                typeArguments,
+                parseArgumentList());
           } else {
             expression = new FunctionExpressionInvocation(
                 expression, typeArguments, parseArgumentList());
           }
         }
       }
     }
     if (_currentToken.type.isAssignmentOperator) {
       Token operator = getAndAdvance();
       _ensureAssignable(expression);
@@ skipping 108 matching lines @@
     if (_matches(TokenType.OPEN_CURLY_BRACKET)) {
       leftBracket = _expect(TokenType.OPEN_CURLY_BRACKET);
       members = _parseClassMembers(className, _getEndToken(leftBracket));
       rightBracket = _expect(TokenType.CLOSE_CURLY_BRACKET);
     } else {
       leftBracket = _createSyntheticToken(TokenType.OPEN_CURLY_BRACKET);
       rightBracket = _createSyntheticToken(TokenType.CLOSE_CURLY_BRACKET);
       _reportErrorForCurrentToken(ParserErrorCode.MISSING_CLASS_BODY);
     }
     ClassDeclaration classDeclaration = new ClassDeclaration(
-        commentAndMetadata.comment, commentAndMetadata.metadata,
-        abstractKeyword, keyword, name, typeParameters, extendsClause,
-        withClause, implementsClause, leftBracket, members, rightBracket);
+        commentAndMetadata.comment,
+        commentAndMetadata.metadata,
+        abstractKeyword,
+        keyword,
+        name,
+        typeParameters,
+        extendsClause,
+        withClause,
+        implementsClause,
+        leftBracket,
+        members,
+        rightBracket);
     classDeclaration.nativeClause = nativeClause;
     return classDeclaration;
   }
 
   /**
    * Parse a list of class members. The [className] is the name of the class
    * whose members are being parsed. The [closingBracket] is the closing bracket
    * for the class, or `null` if the closing bracket is missing. Return the list
    * of class members that were parsed.
    *
@@ skipping 69 matching lines @@
             ParserErrorCode.EXPECTED_TOKEN, [TokenType.SEMICOLON.lexeme]);
         Token leftBracket = getAndAdvance();
         _parseClassMembers(className.name, _getEndToken(leftBracket));
         _expect(TokenType.CLOSE_CURLY_BRACKET);
       } else {
         _reportErrorForToken(ParserErrorCode.EXPECTED_TOKEN,
             _currentToken.previous, [TokenType.SEMICOLON.lexeme]);
       }
       semicolon = _createSyntheticToken(TokenType.SEMICOLON);
     }
-    return new ClassTypeAlias(commentAndMetadata.comment,
-        commentAndMetadata.metadata, classKeyword, className, typeParameters,
-        equals, abstractKeyword, superclass, withClause, implementsClause,
+    return new ClassTypeAlias(
+        commentAndMetadata.comment,
+        commentAndMetadata.metadata,
+        classKeyword,
+        className,
+        typeParameters,
+        equals,
+        abstractKeyword,
+        superclass,
+        withClause,
+        implementsClause,
         semicolon);
   }
 
   /**
    * Parse a list of combinators in a directive. Return the combinators that
    * were parsed.
    *
    *     combinator ::=
    *         'show' identifier (',' identifier)*
    *       | 'hide' identifier (',' identifier)*
@@ skipping 209 matching lines @@
           _tokenMatchesIdentifier(_peek())) {
         _validateModifiersForTopLevelFunction(modifiers);
         return _parseFunctionDeclaration(
             commentAndMetadata, modifiers.externalKeyword, returnType);
       } else if (_matchesKeyword(Keyword.OPERATOR) && _isOperator(_peek())) {
         _reportErrorForToken(ParserErrorCode.TOP_LEVEL_OPERATOR, _currentToken);
         return _convertToFunctionDeclaration(_parseOperator(
             commentAndMetadata, modifiers.externalKeyword, returnType));
       } else if (_matchesIdentifier() &&
           _peek().matchesAny([
-        TokenType.OPEN_PAREN,
-        TokenType.OPEN_CURLY_BRACKET,
-        TokenType.FUNCTION
-      ])) {
+            TokenType.OPEN_PAREN,
+            TokenType.OPEN_CURLY_BRACKET,
+            TokenType.FUNCTION
+          ])) {
         _validateModifiersForTopLevelFunction(modifiers);
         return _parseFunctionDeclaration(
             commentAndMetadata, modifiers.externalKeyword, returnType);
       } else {
         //
         // We have found an error of some kind. Try to recover.
         //
         if (_matchesIdentifier()) {
           if (_peek().matchesAny(
               [TokenType.EQ, TokenType.COMMA, TokenType.SEMICOLON])) {
             //
             // We appear to have a variable declaration with a type of "void".
             //
             _reportErrorForNode(ParserErrorCode.VOID_VARIABLE, returnType);
-            return new TopLevelVariableDeclaration(commentAndMetadata.comment,
+            return new TopLevelVariableDeclaration(
+                commentAndMetadata.comment,
                 commentAndMetadata.metadata,
                 _parseVariableDeclarationListAfterType(null,
                     _validateModifiersForTopLevelVariable(modifiers), null),
                 _expect(TokenType.SEMICOLON));
           }
         }
         _reportErrorForToken(
             ParserErrorCode.EXPECTED_EXECUTABLE, _currentToken);
         return null;
       }
@@ skipping 15 matching lines @@
         keyword = modifiers.constKeyword;
       }
       if (keyword != null) {
         //
         // We appear to have found an incomplete top-level variable declaration.
         //
         _reportErrorForCurrentToken(ParserErrorCode.MISSING_IDENTIFIER);
         List<VariableDeclaration> variables = new List<VariableDeclaration>();
         variables.add(
             new VariableDeclaration(_createSyntheticIdentifier(), null, null));
-        return new TopLevelVariableDeclaration(commentAndMetadata.comment,
+        return new TopLevelVariableDeclaration(
+            commentAndMetadata.comment,
             commentAndMetadata.metadata,
             new VariableDeclarationList(null, null, keyword, null, variables),
             _expectSemicolon());
       }
       _reportErrorForToken(ParserErrorCode.EXPECTED_EXECUTABLE, _currentToken);
       return null;
     } else if (_tokenMatches(_peek(), TokenType.OPEN_PAREN)) {
       _validateModifiersForTopLevelFunction(modifiers);
       return _parseFunctionDeclaration(
           commentAndMetadata, modifiers.externalKeyword, null);
     } else if (_peek()
         .matchesAny([TokenType.EQ, TokenType.COMMA, TokenType.SEMICOLON])) {
       if (modifiers.constKeyword == null &&
           modifiers.finalKeyword == null &&
           modifiers.varKeyword == null) {
         _reportErrorForCurrentToken(
             ParserErrorCode.MISSING_CONST_FINAL_VAR_OR_TYPE);
       }
-      return new TopLevelVariableDeclaration(commentAndMetadata.comment,
-          commentAndMetadata.metadata, _parseVariableDeclarationListAfterType(
+      return new TopLevelVariableDeclaration(
+          commentAndMetadata.comment,
+          commentAndMetadata.metadata,
+          _parseVariableDeclarationListAfterType(
               null, _validateModifiersForTopLevelVariable(modifiers), null),
           _expect(TokenType.SEMICOLON));
     }
     TypeName returnType = parseReturnType();
     if ((_matchesKeyword(Keyword.GET) || _matchesKeyword(Keyword.SET)) &&
         _tokenMatchesIdentifier(_peek())) {
       _validateModifiersForTopLevelFunction(modifiers);
       return _parseFunctionDeclaration(
           commentAndMetadata, modifiers.externalKeyword, returnType);
     } else if (_matchesKeyword(Keyword.OPERATOR) && _isOperator(_peek())) {
       _reportErrorForToken(ParserErrorCode.TOP_LEVEL_OPERATOR, _currentToken);
       return _convertToFunctionDeclaration(_parseOperator(
           commentAndMetadata, modifiers.externalKeyword, returnType));
     } else if (_matches(TokenType.AT)) {
-      return new TopLevelVariableDeclaration(commentAndMetadata.comment,
-          commentAndMetadata.metadata, _parseVariableDeclarationListAfterType(
-              null, _validateModifiersForTopLevelVariable(modifiers),
-              returnType), _expect(TokenType.SEMICOLON));
+      return new TopLevelVariableDeclaration(
+          commentAndMetadata.comment,
+          commentAndMetadata.metadata,
+          _parseVariableDeclarationListAfterType(null,
+              _validateModifiersForTopLevelVariable(modifiers), returnType),
+          _expect(TokenType.SEMICOLON));
     } else if (!_matchesIdentifier()) {
       // TODO(brianwilkerson) Generalize this error. We could also be parsing a
       // top-level variable at this point.
       _reportErrorForToken(ParserErrorCode.EXPECTED_EXECUTABLE, _currentToken);
       Token semicolon;
       if (_matches(TokenType.SEMICOLON)) {
         semicolon = getAndAdvance();
       } else {
         semicolon = _createSyntheticToken(TokenType.SEMICOLON);
       }
       List<VariableDeclaration> variables = new List<VariableDeclaration>();
       variables.add(
           new VariableDeclaration(_createSyntheticIdentifier(), null, null));
-      return new TopLevelVariableDeclaration(commentAndMetadata.comment,
+      return new TopLevelVariableDeclaration(
+          commentAndMetadata.comment,
           commentAndMetadata.metadata,
           new VariableDeclarationList(null, null, null, returnType, variables),
           semicolon);
     }
     if (_peek().matchesAny([
       TokenType.OPEN_PAREN,
       TokenType.FUNCTION,
       TokenType.OPEN_CURLY_BRACKET
     ])) {
       _validateModifiersForTopLevelFunction(modifiers);
       return _parseFunctionDeclaration(
           commentAndMetadata, modifiers.externalKeyword, returnType);
     }
-    return new TopLevelVariableDeclaration(commentAndMetadata.comment,
-        commentAndMetadata.metadata, _parseVariableDeclarationListAfterType(
+    return new TopLevelVariableDeclaration(
+        commentAndMetadata.comment,
+        commentAndMetadata.metadata,
+        _parseVariableDeclarationListAfterType(
             null, _validateModifiersForTopLevelVariable(modifiers), returnType),
         _expect(TokenType.SEMICOLON));
   }
 
   /**
    * Parse a const expression. Return the const expression that was parsed.
    *
    *     constExpression ::=
    *         instanceCreationExpression
    *       | listLiteral
    *       | mapLiteral
    */
   Expression _parseConstExpression() {
     Token keyword = _expectKeyword(Keyword.CONST);
     if (_matches(TokenType.OPEN_SQUARE_BRACKET) || _matches(TokenType.INDEX)) {
       return _parseListLiteral(keyword, null);
     } else if (_matches(TokenType.OPEN_CURLY_BRACKET)) {
       return _parseMapLiteral(keyword, null);
     } else if (_matches(TokenType.LT)) {
       return _parseListOrMapLiteral(keyword);
     }
     return _parseInstanceCreationExpression(keyword);
   }
 
   ConstructorDeclaration _parseConstructor(
-      CommentAndMetadata commentAndMetadata, Token externalKeyword,
-      Token constKeyword, Token factoryKeyword, SimpleIdentifier returnType,
-      Token period, SimpleIdentifier name, FormalParameterList parameters) {
+      CommentAndMetadata commentAndMetadata,
+      Token externalKeyword,
+      Token constKeyword,
+      Token factoryKeyword,
+      SimpleIdentifier returnType,
+      Token period,
+      SimpleIdentifier name,
+      FormalParameterList parameters) {
     bool bodyAllowed = externalKeyword == null;
     Token separator = null;
     List<ConstructorInitializer> initializers = null;
     if (_matches(TokenType.COLON)) {
       separator = getAndAdvance();
       initializers = new List<ConstructorInitializer>();
       do {
         if (_matchesKeyword(Keyword.THIS)) {
           if (_tokenMatches(_peek(), TokenType.OPEN_PAREN)) {
             bodyAllowed = false;
@@ skipping 47 matching lines @@
       } else {
         if (constKeyword != null) {
           _reportErrorForNode(
               ParserErrorCode.CONST_CONSTRUCTOR_WITH_BODY, body);
         } else if (!bodyAllowed) {
           _reportErrorForNode(
               ParserErrorCode.EXTERNAL_CONSTRUCTOR_WITH_BODY, body);
         }
       }
     }
-    return new ConstructorDeclaration(commentAndMetadata.comment,
-        commentAndMetadata.metadata, externalKeyword, constKeyword,
-        factoryKeyword, returnType, period, name, parameters, separator,
-        initializers, redirectedConstructor, body);
+    return new ConstructorDeclaration(
+        commentAndMetadata.comment,
+        commentAndMetadata.metadata,
+        externalKeyword,
+        constKeyword,
+        factoryKeyword,
+        returnType,
+        period,
+        name,
+        parameters,
+        separator,
+        initializers,
+        redirectedConstructor,
+        body);
   }
 
   /**
    * Parse a field initializer within a constructor. Return the field
    * initializer that was parsed.
    *
    *     fieldInitializer:
    *         ('this' '.')? identifier '=' conditionalExpression cascadeSection*
    */
   ConstructorFieldInitializer _parseConstructorFieldInitializer() {
@@ skipping 247 matching lines @@
           break;
         }
         constants.add(_parseEnumConstantDeclaration());
       }
       rightBracket = _expect(TokenType.CLOSE_CURLY_BRACKET);
     } else {
       leftBracket = _createSyntheticToken(TokenType.OPEN_CURLY_BRACKET);
       rightBracket = _createSyntheticToken(TokenType.CLOSE_CURLY_BRACKET);
       _reportErrorForCurrentToken(ParserErrorCode.MISSING_ENUM_BODY);
     }
-    return new EnumDeclaration(commentAndMetadata.comment,
-        commentAndMetadata.metadata, keyword, name, leftBracket, constants,
+    return new EnumDeclaration(
+        commentAndMetadata.comment,
+        commentAndMetadata.metadata,
+        keyword,
+        name,
+        leftBracket,
+        constants,
         rightBracket);
   }
 
   /**
    * Parse an equality expression. Return the equality expression that was
    * parsed.
    *
    *     equalityExpression ::=
    *         relationalExpression (equalityOperator relationalExpression)?
    *       | 'super' equalityOperator relationalExpression
@@ skipping 25 matching lines @@
    * associated with the directive. Return the export directive that was parsed.
    *
    *     exportDirective ::=
    *         metadata 'export' stringLiteral combinator*';'
    */
   ExportDirective _parseExportDirective(CommentAndMetadata commentAndMetadata) {
     Token exportKeyword = _expectKeyword(Keyword.EXPORT);
     StringLiteral libraryUri = _parseUri();
     List<Combinator> combinators = _parseCombinators();
     Token semicolon = _expectSemicolon();
-    return new ExportDirective(commentAndMetadata.comment,
-        commentAndMetadata.metadata, exportKeyword, libraryUri, combinators,
+    return new ExportDirective(
+        commentAndMetadata.comment,
+        commentAndMetadata.metadata,
+        exportKeyword,
+        libraryUri,
+        combinators,
         semicolon);
   }
 
   /**
    * Parse a list of expressions. Return the expression that was parsed.
    *
    *     expressionList ::=
    *         expression (',' expression)*
    */
   List<Expression> _parseExpressionList() {
@@ skipping 159 matching lines @@
                 // has content
               }
               identifier = variable.name;
             }
           }
           Token inKeyword = getAndAdvance();
           Expression iterator = parseExpression2();
           Token rightParenthesis = _expect(TokenType.CLOSE_PAREN);
           Statement body = parseStatement2();
           if (loopVariable == null) {
-            return new ForEachStatement.withReference(awaitKeyword, forKeyword,
-                leftParenthesis, identifier, inKeyword, iterator,
-                rightParenthesis, body);
+            return new ForEachStatement.withReference(
+                awaitKeyword,
+                forKeyword,
+                leftParenthesis,
+                identifier,
+                inKeyword,
+                iterator,
+                rightParenthesis,
+                body);
           }
-          return new ForEachStatement.withDeclaration(awaitKeyword, forKeyword,
-              leftParenthesis, loopVariable, inKeyword, iterator,
-              rightParenthesis, body);
+          return new ForEachStatement.withDeclaration(
+              awaitKeyword,
+              forKeyword,
+              leftParenthesis,
+              loopVariable,
+              inKeyword,
+              iterator,
+              rightParenthesis,
+              body);
         }
       }
       if (awaitKeyword != null) {
         _reportErrorForToken(
             ParserErrorCode.INVALID_AWAIT_IN_FOR, awaitKeyword);
       }
       Token leftSeparator = _expect(TokenType.SEMICOLON);
       Expression condition = null;
       if (!_matches(TokenType.SEMICOLON)) {
         condition = parseExpression2();
       }
       Token rightSeparator = _expect(TokenType.SEMICOLON);
       List<Expression> updaters = null;
       if (!_matches(TokenType.CLOSE_PAREN)) {
         updaters = _parseExpressionList();
       }
       Token rightParenthesis = _expect(TokenType.CLOSE_PAREN);
       Statement body = parseStatement2();
-      return new ForStatement(forKeyword, leftParenthesis, variableList,
-          initialization, leftSeparator, condition, rightSeparator, updaters,
-          rightParenthesis, body);
+      return new ForStatement(
+          forKeyword,
+          leftParenthesis,
+          variableList,
+          initialization,
+          leftSeparator,
+          condition,
+          rightSeparator,
+          updaters,
+          rightParenthesis,
+          body);
     } finally {
       _inLoop = wasInLoop;
     }
   }
 
   /**
    * Parse a function body. The [mayBeEmpty] is `true` if the function body is
    * allowed to be empty. The [emptyErrorCode] is the error code to report if
    * function body expected, but not found. The [inExpression] is `true` if the
    * function body is being parsed as part of an expression and therefore does
@@ skipping 109 matching lines @@
    * not external. The [returnType] is the return type, or `null` if there is no
    * return type. The [isStatement] is `true` if the function declaration is
    * being parsed as a statement. Return the function declaration that was
    * parsed.
    *
    *     functionDeclaration ::=
    *         functionSignature functionBody
    *       | returnType? getOrSet identifier formalParameterList functionBody
    */
   FunctionDeclaration _parseFunctionDeclaration(
-      CommentAndMetadata commentAndMetadata, Token externalKeyword,
+      CommentAndMetadata commentAndMetadata,
+      Token externalKeyword,
       TypeName returnType) {
     Token keyword = null;
     bool isGetter = false;
     if (_matchesKeyword(Keyword.GET) &&
         !_tokenMatches(_peek(), TokenType.OPEN_PAREN)) {
       keyword = getAndAdvance();
       isGetter = true;
     } else if (_matchesKeyword(Keyword.SET) &&
         !_tokenMatches(_peek(), TokenType.OPEN_PAREN)) {
       keyword = getAndAdvance();
     }
     SimpleIdentifier name = parseSimpleIdentifier();
     TypeParameterList typeParameters = null;
     if (parseGenericMethods && _matches(TokenType.LT)) {
       typeParameters = parseTypeParameterList();
     }
     FormalParameterList parameters = null;
     if (!isGetter) {
       if (_matches(TokenType.OPEN_PAREN)) {
         parameters = parseFormalParameterList();
         _validateFormalParameterList(parameters);
       } else {
         _reportErrorForCurrentToken(
             ParserErrorCode.MISSING_FUNCTION_PARAMETERS);
         parameters = new FormalParameterList(
-            _createSyntheticToken(TokenType.OPEN_PAREN), null, null, null,
+            _createSyntheticToken(TokenType.OPEN_PAREN),
+            null,
+            null,
+            null,
             _createSyntheticToken(TokenType.CLOSE_PAREN));
       }
     } else if (_matches(TokenType.OPEN_PAREN)) {
       _reportErrorForCurrentToken(ParserErrorCode.GETTER_WITH_PARAMETERS);
       parseFormalParameterList();
     }
     FunctionBody body;
     if (externalKeyword == null) {
       body = _parseFunctionBody(
           false, ParserErrorCode.MISSING_FUNCTION_BODY, false);
     } else {
       body = new EmptyFunctionBody(_expect(TokenType.SEMICOLON));
     }
 //        if (!isStatement && matches(TokenType.SEMICOLON)) {
 //          // TODO(brianwilkerson) Improve this error message.
 //          reportError(ParserErrorCode.UNEXPECTED_TOKEN, currentToken.getLexeme());
 //          advance();
 //        }
-    return new FunctionDeclaration(commentAndMetadata.comment,
-        commentAndMetadata.metadata, externalKeyword, returnType, keyword, name,
+    return new FunctionDeclaration(
+        commentAndMetadata.comment,
+        commentAndMetadata.metadata,
+        externalKeyword,
+        returnType,
+        keyword,
+        name,
         new FunctionExpression(typeParameters, parameters, body));
   }
 
   /**
    * Parse a function declaration statement. Return the function declaration
    * statement that was parsed.
    *
    *     functionDeclarationStatement ::=
    *         functionSignature functionBody
    */
@@ skipping 48 matching lines @@
       returnType = parseReturnType();
     }
     SimpleIdentifier name = parseSimpleIdentifier();
     TypeParameterList typeParameters = null;
     if (_matches(TokenType.LT)) {
       typeParameters = parseTypeParameterList();
     }
     if (_matches(TokenType.SEMICOLON) || _matches(TokenType.EOF)) {
       _reportErrorForCurrentToken(ParserErrorCode.MISSING_TYPEDEF_PARAMETERS);
       FormalParameterList parameters = new FormalParameterList(
-          _createSyntheticToken(TokenType.OPEN_PAREN), null, null, null,
+          _createSyntheticToken(TokenType.OPEN_PAREN),
+          null,
+          null,
+          null,
           _createSyntheticToken(TokenType.CLOSE_PAREN));
       Token semicolon = _expect(TokenType.SEMICOLON);
-      return new FunctionTypeAlias(commentAndMetadata.comment,
-          commentAndMetadata.metadata, keyword, returnType, name,
-          typeParameters, parameters, semicolon);
+      return new FunctionTypeAlias(
+          commentAndMetadata.comment,
+          commentAndMetadata.metadata,
+          keyword,
+          returnType,
+          name,
+          typeParameters,
+          parameters,
+          semicolon);
     } else if (!_matches(TokenType.OPEN_PAREN)) {
       _reportErrorForCurrentToken(ParserErrorCode.MISSING_TYPEDEF_PARAMETERS);
       // TODO(brianwilkerson) Recover from this error. At the very least we
       // should skip to the start of the next valid compilation unit member,
       // allowing for the possibility of finding the typedef parameters before
       // that point.
-      return new FunctionTypeAlias(commentAndMetadata.comment,
-          commentAndMetadata.metadata, keyword, returnType, name,
-          typeParameters, new FormalParameterList(
-              _createSyntheticToken(TokenType.OPEN_PAREN), null, null, null,
-              _createSyntheticToken(TokenType.CLOSE_PAREN)),
+      return new FunctionTypeAlias(
+          commentAndMetadata.comment,
+          commentAndMetadata.metadata,
+          keyword,
+          returnType,
+          name,
+          typeParameters,
+          new FormalParameterList(_createSyntheticToken(TokenType.OPEN_PAREN),
+              null, null, null, _createSyntheticToken(TokenType.CLOSE_PAREN)),
           _createSyntheticToken(TokenType.SEMICOLON));
     }
     FormalParameterList parameters = parseFormalParameterList();
     _validateFormalParameterList(parameters);
     Token semicolon = _expect(TokenType.SEMICOLON);
-    return new FunctionTypeAlias(commentAndMetadata.comment,
-        commentAndMetadata.metadata, keyword, returnType, name, typeParameters,
-        parameters, semicolon);
+    return new FunctionTypeAlias(
+        commentAndMetadata.comment,
+        commentAndMetadata.metadata,
+        keyword,
+        returnType,
+        name,
+        typeParameters,
+        parameters,
+        semicolon);
   }
 
   /**
    * Parse a getter. The [commentAndMetadata] is the documentation comment and
    * metadata to be associated with the declaration. The externalKeyword] is the
    * 'external' token. The staticKeyword] is the static keyword, or `null` if
    * the getter is not static. The [returnType] the return type that has already
    * been parsed, or `null` if there was no return type. Return the getter that
    * was parsed.
    *
    *     getter ::=
    *         getterSignature functionBody?
    *
    *     getterSignature ::=
    *         'external'? 'static'? returnType? 'get' identifier
    */
   MethodDeclaration _parseGetter(CommentAndMetadata commentAndMetadata,
       Token externalKeyword, Token staticKeyword, TypeName returnType) {
     Token propertyKeyword = _expectKeyword(Keyword.GET);
     SimpleIdentifier name = parseSimpleIdentifier();
     if (_matches(TokenType.OPEN_PAREN) &&
         _tokenMatches(_peek(), TokenType.CLOSE_PAREN)) {
       _reportErrorForCurrentToken(ParserErrorCode.GETTER_WITH_PARAMETERS);
       _advance();
       _advance();
     }
     FunctionBody body = _parseFunctionBody(
         externalKeyword != null || staticKeyword == null,
-        ParserErrorCode.STATIC_GETTER_WITHOUT_BODY, false);
+        ParserErrorCode.STATIC_GETTER_WITHOUT_BODY,
+        false);
     if (externalKeyword != null && body is! EmptyFunctionBody) {
       _reportErrorForCurrentToken(ParserErrorCode.EXTERNAL_GETTER_WITH_BODY);
     }
-    return new MethodDeclaration(commentAndMetadata.comment,
-        commentAndMetadata.metadata, externalKeyword, staticKeyword, returnType,
-        propertyKeyword, null, name, null, null, body);
+    return new MethodDeclaration(
+        commentAndMetadata.comment,
+        commentAndMetadata.metadata,
+        externalKeyword,
+        staticKeyword,
+        returnType,
+        propertyKeyword,
+        null,
+        name,
+        null,
+        null,
+        body);
   }
 
   /**
    * Parse a list of identifiers. Return the list of identifiers that were
    * parsed.
    *
    *     identifierList ::=
    *         identifier (',' identifier)*
    */
   List<SimpleIdentifier> _parseIdentifierList() {
@@ skipping 61 matching lines @@
             ParserErrorCode.UNEXPECTED_TOKEN, [_currentToken]);
         _advance();
         if (_matchesKeyword(Keyword.AS)) {
           asToken = getAndAdvance();
           prefix = parseSimpleIdentifier();
         }
       }
     }
     List<Combinator> combinators = _parseCombinators();
     Token semicolon = _expectSemicolon();
-    return new ImportDirective(commentAndMetadata.comment,
-        commentAndMetadata.metadata, importKeyword, libraryUri, deferredToken,
-        asToken, prefix, combinators, semicolon);
+    return new ImportDirective(
+        commentAndMetadata.comment,
+        commentAndMetadata.metadata,
+        importKeyword,
+        libraryUri,
+        deferredToken,
+        asToken,
+        prefix,
+        combinators,
+        semicolon);
   }
 
   /**
    * Parse a list of initialized identifiers. The [commentAndMetadata] is the
    * documentation comment and metadata to be associated with the declaration.
    * The [staticKeyword] is the static keyword, or `null` if the getter is not
    * static. The [keyword] is the token representing the 'final', 'const' or
    * 'var' keyword, or `null` if there is no keyword. The [type] is the type
    * that has already been parsed, or `null` if 'var' was provided. Return the
    * getter that was parsed.
    *
    *     ?? ::=
    *         'static'? ('var' | type) initializedIdentifierList ';'
    *       | 'final' type? initializedIdentifierList ';'
    *
    *     initializedIdentifierList ::=
    *         initializedIdentifier (',' initializedIdentifier)*
    *
    *     initializedIdentifier ::=
    *         identifier ('=' expression)?
    */
   FieldDeclaration _parseInitializedIdentifierList(
-      CommentAndMetadata commentAndMetadata, Token staticKeyword, Token keyword,
+      CommentAndMetadata commentAndMetadata,
+      Token staticKeyword,
+      Token keyword,
       TypeName type) {
     VariableDeclarationList fieldList =
         _parseVariableDeclarationListAfterType(null, keyword, type);
-    return new FieldDeclaration(commentAndMetadata.comment,
-        commentAndMetadata.metadata, staticKeyword, fieldList,
+    return new FieldDeclaration(
+        commentAndMetadata.comment,
+        commentAndMetadata.metadata,
+        staticKeyword,
+        fieldList,
         _expect(TokenType.SEMICOLON));
   }
 
   /**
    * Parse an instance creation expression. The [keyword] is the 'new' or
    * 'const' keyword that introduces the expression. Return the instance
    * creation expression that was parsed.
    *
    *     instanceCreationExpression ::=
    *         ('new' | 'const') type ('.' identifier)? argumentList
@@ skipping 57 matching lines @@
    * no type arguments. Return the list literal that was parsed.
    *
    *     listLiteral ::=
    *         'const'? typeArguments? '[' (expressionList ','?)? ']'
    */
   ListLiteral _parseListLiteral(
       Token modifier, TypeArgumentList typeArguments) {
     // may be empty list literal
     if (_matches(TokenType.INDEX)) {
       BeginToken leftBracket = _createToken(
-          _currentToken, TokenType.OPEN_SQUARE_BRACKET, isBegin: true);
+          _currentToken, TokenType.OPEN_SQUARE_BRACKET,
+          isBegin: true);
       Token rightBracket =
           new Token(TokenType.CLOSE_SQUARE_BRACKET, _currentToken.offset + 1);
       leftBracket.endToken = rightBracket;
       rightBracket.setNext(_currentToken.next);
       leftBracket.setNext(rightBracket);
       _currentToken.previous.setNext(leftBracket);
       _currentToken = _currentToken.next;
       return new ListLiteral(
           modifier, typeArguments, leftBracket, null, rightBracket);
     }
@@ skipping 37 matching lines @@
     if (_matches(TokenType.LT)) {
       typeArguments = parseTypeArgumentList();
     }
     if (_matches(TokenType.OPEN_CURLY_BRACKET)) {
       return _parseMapLiteral(modifier, typeArguments);
     } else if (_matches(TokenType.OPEN_SQUARE_BRACKET) ||
         _matches(TokenType.INDEX)) {
       return _parseListLiteral(modifier, typeArguments);
     }
     _reportErrorForCurrentToken(ParserErrorCode.EXPECTED_LIST_OR_MAP_LITERAL);
-    return new ListLiteral(modifier, typeArguments,
-        _createSyntheticToken(TokenType.OPEN_SQUARE_BRACKET), null,
+    return new ListLiteral(
+        modifier,
+        typeArguments,
+        _createSyntheticToken(TokenType.OPEN_SQUARE_BRACKET),
+        null,
         _createSyntheticToken(TokenType.CLOSE_SQUARE_BRACKET));
   }
 
   /**
    * Parse a logical and expression. Return the logical and expression that was
    * parsed.
    *
    *     logicalAndExpression ::=
    *         equalityExpression ('&&' equalityExpression)*
    */
@@ skipping 49 matching lines @@
    * static keyword, or `null` if the getter is not static. The [returnType] is
    * the return type of the method. The [name] is the name of the method. The
    * [parameters] is the parameters to the method. Return the method declaration
    * that was parsed.
    *
    *     functionDeclaration ::=
    *         ('external' 'static'?)? functionSignature functionBody
    *       | 'external'? functionSignature ';'
    */
   MethodDeclaration _parseMethodDeclarationAfterParameters(
-      CommentAndMetadata commentAndMetadata, Token externalKeyword,
-      Token staticKeyword, TypeName returnType, SimpleIdentifier name,
-      TypeParameterList typeParameters, FormalParameterList parameters) {
+      CommentAndMetadata commentAndMetadata,
+      Token externalKeyword,
+      Token staticKeyword,
+      TypeName returnType,
+      SimpleIdentifier name,
+      TypeParameterList typeParameters,
+      FormalParameterList parameters) {
     FunctionBody body = _parseFunctionBody(
         externalKeyword != null || staticKeyword == null,
-        ParserErrorCode.MISSING_FUNCTION_BODY, false);
+        ParserErrorCode.MISSING_FUNCTION_BODY,
+        false);
     if (externalKeyword != null) {
       if (body is! EmptyFunctionBody) {
         _reportErrorForNode(ParserErrorCode.EXTERNAL_METHOD_WITH_BODY, body);
       }
     } else if (staticKeyword != null) {
       if (body is EmptyFunctionBody && _parseFunctionBodies) {
         _reportErrorForNode(ParserErrorCode.ABSTRACT_STATIC_METHOD, body);
       }
     }
-    return new MethodDeclaration(commentAndMetadata.comment,
-        commentAndMetadata.metadata, externalKeyword, staticKeyword, returnType,
-        null, null, name, typeParameters, parameters, body);
+    return new MethodDeclaration(
+        commentAndMetadata.comment,
+        commentAndMetadata.metadata,
+        externalKeyword,
+        staticKeyword,
+        returnType,
+        null,
+        null,
+        name,
+        typeParameters,
+        parameters,
+        body);
   }
 
   /**
    * Parse a method declaration. The [commentAndMetadata] is the documentation
    * comment and metadata to be associated with the declaration. The
    * [externalKeyword] is the 'external' token. The [staticKeyword] is the
    * static keyword, or `null` if the getter is not static. The [returnType] is
    * the return type of the method. Return the method declaration that was
    * parsed.
    *
    *     functionDeclaration ::=
    *         'external'? 'static'? functionSignature functionBody
    *       | 'external'? functionSignature ';'
    */
   MethodDeclaration _parseMethodDeclarationAfterReturnType(
-      CommentAndMetadata commentAndMetadata, Token externalKeyword,
-      Token staticKeyword, TypeName returnType) {
+      CommentAndMetadata commentAndMetadata,
+      Token externalKeyword,
+      Token staticKeyword,
+      TypeName returnType) {
     SimpleIdentifier methodName = parseSimpleIdentifier();
     TypeParameterList typeParameters = null;
     if (parseGenericMethods && _matches(TokenType.LT)) {
       typeParameters = parseTypeParameterList();
     }
     FormalParameterList parameters;
     if (!_matches(TokenType.OPEN_PAREN) &&
         (_matches(TokenType.OPEN_CURLY_BRACKET) ||
             _matches(TokenType.FUNCTION))) {
       _reportErrorForToken(
           ParserErrorCode.MISSING_METHOD_PARAMETERS, _currentToken.previous);
       parameters = new FormalParameterList(
-          _createSyntheticToken(TokenType.OPEN_PAREN), null, null, null,
+          _createSyntheticToken(TokenType.OPEN_PAREN),
+          null,
+          null,
+          null,
           _createSyntheticToken(TokenType.CLOSE_PAREN));
     } else {
       parameters = parseFormalParameterList();
     }
     _validateFormalParameterList(parameters);
-    return _parseMethodDeclarationAfterParameters(commentAndMetadata,
-        externalKeyword, staticKeyword, returnType, methodName, typeParameters,
+    return _parseMethodDeclarationAfterParameters(
+        commentAndMetadata,
+        externalKeyword,
+        staticKeyword,
+        returnType,
+        methodName,
+        typeParameters,
         parameters);
   }
 
   /**
    * Parse the modifiers preceding a declaration. This method allows the
    * modifiers to appear in any order but does generate errors for duplicated
    * modifiers. Checks for other problems, such as having the modifiers appear
    * in the wrong order or specifying both 'const' and 'final', are reported in
    * one of the methods whose name is prefixed with `validateModifiersFor`.
    * Return the modifiers that were parsed.
@@ skipping 187 matching lines @@
         return _parseTryStatement();
       } else if (keyword == Keyword.WHILE) {
         return _parseWhileStatement();
       } else if (keyword == Keyword.VAR || keyword == Keyword.FINAL) {
         return _parseVariableDeclarationStatementAfterMetadata(
             commentAndMetadata);
       } else if (keyword == Keyword.VOID) {
         TypeName returnType = parseReturnType();
         if (_matchesIdentifier() &&
             _peek().matchesAny([
-          TokenType.OPEN_PAREN,
-          TokenType.OPEN_CURLY_BRACKET,
-          TokenType.FUNCTION
-        ])) {
+              TokenType.OPEN_PAREN,
+              TokenType.OPEN_CURLY_BRACKET,
+              TokenType.FUNCTION
+            ])) {
           return _parseFunctionDeclarationStatementAfterReturnType(
               commentAndMetadata, returnType);
         } else {
           //
           // We have found an error of some kind. Try to recover.
           //
           if (_matchesIdentifier()) {
             if (_peek().matchesAny(
                 [TokenType.EQ, TokenType.COMMA, TokenType.SEMICOLON])) {
               //
@@ skipping 123 matching lines @@
         _advance();
       }
     }
     FormalParameterList parameters = parseFormalParameterList();
     _validateFormalParameterList(parameters);
     FunctionBody body =
         _parseFunctionBody(true, ParserErrorCode.MISSING_FUNCTION_BODY, false);
     if (externalKeyword != null && body is! EmptyFunctionBody) {
       _reportErrorForCurrentToken(ParserErrorCode.EXTERNAL_OPERATOR_WITH_BODY);
     }
-    return new MethodDeclaration(commentAndMetadata.comment,
-        commentAndMetadata.metadata, externalKeyword, null, returnType, null,
-        operatorKeyword, name, null, parameters, body);
+    return new MethodDeclaration(
+        commentAndMetadata.comment,
+        commentAndMetadata.metadata,
+        externalKeyword,
+        null,
+        returnType,
+        null,
+        operatorKeyword,
+        name,
+        null,
+        parameters,
+        body);
   }
 
   /**
    * Parse a return type if one is given, otherwise return `null` without
    * advancing. Return the return type that was parsed.
    */
   TypeName _parseOptionalReturnType() {
     if (_matchesKeyword(Keyword.VOID)) {
       return parseReturnType();
     } else if (_matchesIdentifier() &&
@@ skipping 24 matching lines @@
    *     partOfDirective ::=
    *         metadata 'part' 'of' identifier ';'
    */
   Directive _parsePartDirective(CommentAndMetadata commentAndMetadata) {
     Token partKeyword = _expectKeyword(Keyword.PART);
     if (_matchesString(_OF)) {
       Token ofKeyword = getAndAdvance();
       LibraryIdentifier libraryName = _parseLibraryName(
           ParserErrorCode.MISSING_NAME_IN_PART_OF_DIRECTIVE, ofKeyword);
       Token semicolon = _expect(TokenType.SEMICOLON);
-      return new PartOfDirective(commentAndMetadata.comment,
-          commentAndMetadata.metadata, partKeyword, ofKeyword, libraryName,
+      return new PartOfDirective(
+          commentAndMetadata.comment,
+          commentAndMetadata.metadata,
+          partKeyword,
+          ofKeyword,
+          libraryName,
           semicolon);
     }
     StringLiteral partUri = _parseUri();
     Token semicolon = _expect(TokenType.SEMICOLON);
     return new PartDirective(commentAndMetadata.comment,
         commentAndMetadata.metadata, partKeyword, partUri, semicolon);
   }
 
   /**
    * Parse a postfix expression. Return the postfix expression that was parsed.
@@ skipping 68 matching lines @@
    *       | mapLiteral
    *       | listLiteral
    */
   Expression _parsePrimaryExpression() {
     if (_matchesKeyword(Keyword.THIS)) {
       return new ThisExpression(getAndAdvance());
     } else if (_matchesKeyword(Keyword.SUPER)) {
       // TODO(paulberry): verify with Gilad that "super" must be followed by
       // unconditionalAssignableSelector in this case.
       return _parseAssignableSelector(
-          new SuperExpression(getAndAdvance()), false, allowConditional: false);
+          new SuperExpression(getAndAdvance()), false,
+          allowConditional: false);
     } else if (_matchesKeyword(Keyword.NULL)) {
       return new NullLiteral(getAndAdvance());
     } else if (_matchesKeyword(Keyword.FALSE)) {
       return new BooleanLiteral(getAndAdvance(), false);
     } else if (_matchesKeyword(Keyword.TRUE)) {
       return new BooleanLiteral(getAndAdvance(), true);
     } else if (_matches(TokenType.DOUBLE)) {
       Token token = getAndAdvance();
       double value = 0.0;
       try {
@@ skipping 182 matching lines @@
    *         'external'? 'static'? returnType? 'set' identifier formalParameterList
    */
   MethodDeclaration _parseSetter(CommentAndMetadata commentAndMetadata,
       Token externalKeyword, Token staticKeyword, TypeName returnType) {
     Token propertyKeyword = _expectKeyword(Keyword.SET);
     SimpleIdentifier name = parseSimpleIdentifier();
     FormalParameterList parameters = parseFormalParameterList();
     _validateFormalParameterList(parameters);
     FunctionBody body = _parseFunctionBody(
         externalKeyword != null || staticKeyword == null,
-        ParserErrorCode.STATIC_SETTER_WITHOUT_BODY, false);
+        ParserErrorCode.STATIC_SETTER_WITHOUT_BODY,
+        false);
     if (externalKeyword != null && body is! EmptyFunctionBody) {
       _reportErrorForCurrentToken(ParserErrorCode.EXTERNAL_SETTER_WITH_BODY);
     }
-    return new MethodDeclaration(commentAndMetadata.comment,
-        commentAndMetadata.metadata, externalKeyword, staticKeyword, returnType,
-        propertyKeyword, null, name, null, parameters, body);
+    return new MethodDeclaration(
+        commentAndMetadata.comment,
+        commentAndMetadata.metadata,
+        externalKeyword,
+        staticKeyword,
+        returnType,
+        propertyKeyword,
+        null,
+        name,
+        null,
+        parameters,
+        body);
   }
 
   /**
    * Parse a shift expression. Return the shift expression that was parsed.
    *
    *     shiftExpression ::=
    *         additiveExpression (shiftOperator additiveExpression)*
    *       | 'super' (shiftOperator additiveExpression)+
    */
   Expression _parseShiftExpression() {
@@ skipping 129 matching lines @@
       while (!_matches(TokenType.EOF) &&
           !_matches(TokenType.CLOSE_CURLY_BRACKET)) {
         List<Label> labels = new List<Label>();
         while (
             _matchesIdentifier() && _tokenMatches(_peek(), TokenType.COLON)) {
           SimpleIdentifier identifier = parseSimpleIdentifier();
           String label = identifier.token.lexeme;
           if (definedLabels.contains(label)) {
             _reportErrorForToken(
                 ParserErrorCode.DUPLICATE_LABEL_IN_SWITCH_STATEMENT,
-                identifier.token, [label]);
+                identifier.token,
+                [label]);
           } else {
             definedLabels.add(label);
           }
           Token colon = _expect(TokenType.COLON);
           labels.add(new Label(identifier, colon));
         }
         if (_matchesKeyword(Keyword.CASE)) {
           Token caseKeyword = getAndAdvance();
           Expression caseExpression = parseExpression2();
           Token colon = _expect(TokenType.COLON);
@@ skipping 137 matching lines @@
         catchKeyword = getAndAdvance();
         leftParenthesis = _expect(TokenType.OPEN_PAREN);
         exceptionParameter = parseSimpleIdentifier();
         if (_matches(TokenType.COMMA)) {
           comma = getAndAdvance();
           stackTraceParameter = parseSimpleIdentifier();
         }
         rightParenthesis = _expect(TokenType.CLOSE_PAREN);
       }
       Block catchBody = parseBlock();
-      catchClauses.add(new CatchClause(onKeyword, exceptionType, catchKeyword,
-          leftParenthesis, exceptionParameter, comma, stackTraceParameter,
-          rightParenthesis, catchBody));
+      catchClauses.add(new CatchClause(
+          onKeyword,
+          exceptionType,
+          catchKeyword,
+          leftParenthesis,
+          exceptionParameter,
+          comma,
+          stackTraceParameter,
+          rightParenthesis,
+          catchBody));
     }
     Token finallyKeyword = null;
     if (_matchesKeyword(Keyword.FINALLY)) {
       finallyKeyword = getAndAdvance();
       finallyClause = parseBlock();
     } else {
       if (catchClauses.isEmpty) {
         _reportErrorForCurrentToken(ParserErrorCode.MISSING_CATCH_OR_FINALLY);
       }
     }
@@ skipping 92 matching lines @@
         // we cannot do the same for "++super" because "+super" is also not
         // valid.
         //
         if (operator.type == TokenType.MINUS_MINUS) {
           Token firstOperator = _createToken(operator, TokenType.MINUS);
           Token secondOperator =
               new Token(TokenType.MINUS, operator.offset + 1);
           secondOperator.setNext(_currentToken);
           firstOperator.setNext(secondOperator);
           operator.previous.setNext(firstOperator);
-          return new PrefixExpression(firstOperator, new PrefixExpression(
-              secondOperator, new SuperExpression(getAndAdvance())));
+          return new PrefixExpression(
+              firstOperator,
+              new PrefixExpression(
+                  secondOperator, new SuperExpression(getAndAdvance())));
         } else {
           // Invalid operator before 'super'
           _reportErrorForCurrentToken(
               ParserErrorCode.INVALID_OPERATOR_FOR_SUPER, [operator.lexeme]);
           return new PrefixExpression(
               operator, new SuperExpression(getAndAdvance()));
         }
       }
       return new PrefixExpression(operator, _parseAssignableExpression(false));
     } else if (_matches(TokenType.PLUS)) {
@@ skipping 118 matching lines @@
     }
     List<VariableDeclaration> variables = new List<VariableDeclaration>();
     variables.add(_parseVariableDeclaration());
     while (_matches(TokenType.COMMA)) {
       _advance();
       variables.add(_parseVariableDeclaration());
     }
     return new VariableDeclarationList(
         commentAndMetadata != null ? commentAndMetadata.comment : null,
         commentAndMetadata != null ? commentAndMetadata.metadata : null,
-        keyword, type, variables);
+        keyword,
+        type,
+        variables);
   }
 
   /**
    * Parse a variable declaration statement. The [commentAndMetadata] is the
    * metadata to be associated with the variable declaration statement, or
    * `null` if there is no attempt at parsing the comment and metadata. Return
    * the variable declaration statement that was parsed.
    *
    *     variableDeclarationStatement ::=
    *         variableDeclarationList ';'
@@ skipping 238 matching lines @@
     }
     Token next = startToken.next;
     if (_tokenMatches(next, TokenType.CLOSE_PAREN)) {
       return next.next;
     }
     //
     // Look to see whether the token after the open parenthesis is something
     // that should only occur at the beginning of a parameter list.
     //
     if (next.matchesAny([
-      TokenType.AT,
-      TokenType.OPEN_SQUARE_BRACKET,
-      TokenType.OPEN_CURLY_BRACKET
-    ]) ||
+          TokenType.AT,
+          TokenType.OPEN_SQUARE_BRACKET,
+          TokenType.OPEN_CURLY_BRACKET
+        ]) ||
         _tokenMatchesKeyword(next, Keyword.VOID) ||
         (_tokenMatchesIdentifier(next) &&
             (next.next.matchesAny([TokenType.COMMA, TokenType.CLOSE_PAREN])))) {
       return _skipPastMatchingToken(startToken);
     }
     //
     // Look to see whether the first parameter is a function typed parameter
     // without a return type.
     //
     if (_tokenMatchesIdentifier(next) &&
@@ skipping 459 matching lines @@
         int fourthDigit = lexeme.codeUnitAt(currentIndex + 3);
         if (!_isHexDigit(firstDigit) ||
             !_isHexDigit(secondDigit) ||
             !_isHexDigit(thirdDigit) ||
             !_isHexDigit(fourthDigit)) {
           // Illegal escape sequence: invalid hex digits
           _reportErrorForCurrentToken(ParserErrorCode.INVALID_UNICODE_ESCAPE);
         } else {
           _appendScalarValue(
               buffer,
-              lexeme
-                  .substring(
-                      index,
-                      currentIndex + 1),
+              lexeme.substring(index, currentIndex + 1),
               (((((Character.digit(firstDigit, 16) << 4) +
                                   Character.digit(secondDigit, 16)) <<
                               4) +
                           Character.digit(thirdDigit, 16)) <<
                       4) +
-                  Character
-                      .digit(fourthDigit, 16),
+                  Character.digit(fourthDigit, 16),
               index,
-              currentIndex +
-                  3);
+              currentIndex + 3);
         }
         return currentIndex + 4;
       }
     } else {
       buffer.writeCharCode(currentChar);
     }
     return currentIndex + 1;
   }
 
   /**
@@ skipping 321 matching lines @@
     }
     if (modifiers.finalKeyword != null) {
       _reportErrorForToken(
           ParserErrorCode.FINAL_TYPEDEF, modifiers.finalKeyword);
     }
     if (modifiers.varKeyword != null) {
       _reportErrorForToken(ParserErrorCode.VAR_TYPEDEF, modifiers.varKeyword);
     }
   }
 }
+
 /**
  * A synthetic keyword token.
  */
 class Parser_SyntheticKeywordToken extends KeywordToken {
   /**
    * Initialize a newly created token to represent the given [keyword] at the
    * given [offset].
    */
   Parser_SyntheticKeywordToken(Keyword keyword, int offset)
       : super(keyword, offset);
@@ skipping 208 matching lines @@
           'EXTERNAL_SETTER_WITH_BODY', "External setters cannot have a body");
 
   static const ParserErrorCode EXTERNAL_TYPEDEF = const ParserErrorCode(
       'EXTERNAL_TYPEDEF', "Type aliases cannot be declared to be 'external'");
 
   static const ParserErrorCode FACTORY_TOP_LEVEL_DECLARATION =
       const ParserErrorCode('FACTORY_TOP_LEVEL_DECLARATION',
           "Top-level declarations cannot be declared to be 'factory'");
 
   static const ParserErrorCode FACTORY_WITH_INITIALIZERS =
-      const ParserErrorCode('FACTORY_WITH_INITIALIZERS',
+      const ParserErrorCode(
+          'FACTORY_WITH_INITIALIZERS',
           "A 'factory' constructor cannot have initializers",
           "Either remove the 'factory' keyword to make this a generative "
           "constructor or remove the initializers.");
 
   static const ParserErrorCode FACTORY_WITHOUT_BODY = const ParserErrorCode(
       'FACTORY_WITHOUT_BODY',
       "A non-redirecting 'factory' constructor must have a body");
 
   static const ParserErrorCode FIELD_INITIALIZER_OUTSIDE_CONSTRUCTOR =
       const ParserErrorCode('FIELD_INITIALIZER_OUTSIDE_CONSTRUCTOR',
@@ skipping 248 matching lines @@
 
   static const ParserErrorCode NON_IDENTIFIER_LIBRARY_NAME =
       const ParserErrorCode('NON_IDENTIFIER_LIBRARY_NAME',
           "The name of a library must be an identifier");
 
   static const ParserErrorCode NON_PART_OF_DIRECTIVE_IN_PART =
       const ParserErrorCode('NON_PART_OF_DIRECTIVE_IN_PART',
           "The part-of directive must be the only directive in a part");
 
   static const ParserErrorCode NON_STRING_LITERAL_AS_URI =
-      const ParserErrorCode('NON_STRING_LITERAL_AS_URI',
+      const ParserErrorCode(
+          'NON_STRING_LITERAL_AS_URI',
           "The URI must be a string literal",
           "Enclose the URI in either single or double quotes.");
 
   static const ParserErrorCode NON_USER_DEFINABLE_OPERATOR =
       const ParserErrorCode('NON_USER_DEFINABLE_OPERATOR',
           "The operator '{0}' is not user definable");
 
   static const ParserErrorCode NORMAL_BEFORE_OPTIONAL_PARAMETERS =
       const ParserErrorCode('NORMAL_BEFORE_OPTIONAL_PARAMETERS',
           "Normal parameters must occur before optional parameters");
@@ skipping 142 matching lines @@
 
   @override
   bool visitAdjacentStrings(AdjacentStrings node) {
     AdjacentStrings toNode = this._toNode as AdjacentStrings;
     return _isEqualNodeLists(node.strings, toNode.strings);
   }
 
   @override
   bool visitAnnotation(Annotation node) {
     Annotation toNode = this._toNode as Annotation;
-    if (_and(_isEqualTokens(node.atSign, toNode.atSign),
+    if (_and(
+        _isEqualTokens(node.atSign, toNode.atSign),
         _isEqualNodes(node.name, toNode.name),
         _isEqualTokens(node.period, toNode.period),
         _isEqualNodes(node.constructorName, toNode.constructorName),
         _isEqualNodes(node.arguments, toNode.arguments))) {
       toNode.element = node.element;
       return true;
     }
     return false;
   }
 
   @override
   bool visitArgumentList(ArgumentList node) {
     ArgumentList toNode = this._toNode as ArgumentList;
-    return _and(_isEqualTokens(node.leftParenthesis, toNode.leftParenthesis),
+    return _and(
+        _isEqualTokens(node.leftParenthesis, toNode.leftParenthesis),
         _isEqualNodeLists(node.arguments, toNode.arguments),
         _isEqualTokens(node.rightParenthesis, toNode.rightParenthesis));
   }
 
   @override
   bool visitAsExpression(AsExpression node) {
     AsExpression toNode = this._toNode as AsExpression;
-    if (_and(_isEqualNodes(node.expression, toNode.expression),
+    if (_and(
+        _isEqualNodes(node.expression, toNode.expression),
         _isEqualTokens(node.asOperator, toNode.asOperator),
         _isEqualNodes(node.type, toNode.type))) {
       toNode.propagatedType = node.propagatedType;
       toNode.staticType = node.staticType;
       return true;
     }
     return false;
   }
 
   @override
   bool visitAssertStatement(AssertStatement node) {
     AssertStatement toNode = this._toNode as AssertStatement;
-    return _and(_isEqualTokens(node.assertKeyword, toNode.assertKeyword),
+    return _and(
+        _isEqualTokens(node.assertKeyword, toNode.assertKeyword),
         _isEqualTokens(node.leftParenthesis, toNode.leftParenthesis),
         _isEqualNodes(node.condition, toNode.condition),
         _isEqualTokens(node.rightParenthesis, toNode.rightParenthesis),
         _isEqualTokens(node.semicolon, toNode.semicolon));
   }
 
   @override
   bool visitAssignmentExpression(AssignmentExpression node) {
     AssignmentExpression toNode = this._toNode as AssignmentExpression;
-    if (_and(_isEqualNodes(node.leftHandSide, toNode.leftHandSide),
+    if (_and(
+        _isEqualNodes(node.leftHandSide, toNode.leftHandSide),
         _isEqualTokens(node.operator, toNode.operator),
         _isEqualNodes(node.rightHandSide, toNode.rightHandSide))) {
       toNode.propagatedElement = node.propagatedElement;
       toNode.propagatedType = node.propagatedType;
       toNode.staticElement = node.staticElement;
       toNode.staticType = node.staticType;
       return true;
     }
     return false;
   }
 
   @override
   bool visitAwaitExpression(AwaitExpression node) {
     AwaitExpression toNode = this._toNode as AwaitExpression;
     if (_and(_isEqualTokens(node.awaitKeyword, toNode.awaitKeyword),
         _isEqualNodes(node.expression, toNode.expression))) {
       toNode.propagatedType = node.propagatedType;
       toNode.staticType = node.staticType;
       return true;
     }
     return false;
   }
 
   @override
   bool visitBinaryExpression(BinaryExpression node) {
     BinaryExpression toNode = this._toNode as BinaryExpression;
-    if (_and(_isEqualNodes(node.leftOperand, toNode.leftOperand),
+    if (_and(
+        _isEqualNodes(node.leftOperand, toNode.leftOperand),
         _isEqualTokens(node.operator, toNode.operator),
         _isEqualNodes(node.rightOperand, toNode.rightOperand))) {
       toNode.propagatedElement = node.propagatedElement;
       toNode.propagatedType = node.propagatedType;
       toNode.staticElement = node.staticElement;
       toNode.staticType = node.staticType;
       return true;
     }
     return false;
   }
 
   @override
   bool visitBlock(Block node) {
     Block toNode = this._toNode as Block;
-    return _and(_isEqualTokens(node.leftBracket, toNode.leftBracket),
+    return _and(
+        _isEqualTokens(node.leftBracket, toNode.leftBracket),
         _isEqualNodeLists(node.statements, toNode.statements),
         _isEqualTokens(node.rightBracket, toNode.rightBracket));
   }
 
   @override
   bool visitBlockFunctionBody(BlockFunctionBody node) {
     BlockFunctionBody toNode = this._toNode as BlockFunctionBody;
     return _isEqualNodes(node.block, toNode.block);
   }
 
   @override
   bool visitBooleanLiteral(BooleanLiteral node) {
     BooleanLiteral toNode = this._toNode as BooleanLiteral;
     if (_and(_isEqualTokens(node.literal, toNode.literal),
         node.value == toNode.value)) {
       toNode.propagatedType = node.propagatedType;
       toNode.staticType = node.staticType;
       return true;
     }
     return false;
   }
 
   @override
   bool visitBreakStatement(BreakStatement node) {
     BreakStatement toNode = this._toNode as BreakStatement;
-    if (_and(_isEqualTokens(node.breakKeyword, toNode.breakKeyword),
+    if (_and(
+        _isEqualTokens(node.breakKeyword, toNode.breakKeyword),
         _isEqualNodes(node.label, toNode.label),
         _isEqualTokens(node.semicolon, toNode.semicolon))) {
       // TODO(paulberry): map node.target to toNode.target.
       return true;
     }
     return false;
   }
 
   @override
   bool visitCascadeExpression(CascadeExpression node) {
     CascadeExpression toNode = this._toNode as CascadeExpression;
     if (_and(_isEqualNodes(node.target, toNode.target),
         _isEqualNodeLists(node.cascadeSections, toNode.cascadeSections))) {
       toNode.propagatedType = node.propagatedType;
       toNode.staticType = node.staticType;
       return true;
     }
     return false;
   }
 
   @override
   bool visitCatchClause(CatchClause node) {
     CatchClause toNode = this._toNode as CatchClause;
-    return _and(_isEqualTokens(node.onKeyword, toNode.onKeyword),
+    return _and(
+        _isEqualTokens(node.onKeyword, toNode.onKeyword),
         _isEqualNodes(node.exceptionType, toNode.exceptionType),
         _isEqualTokens(node.catchKeyword, toNode.catchKeyword),
         _isEqualTokens(node.leftParenthesis, toNode.leftParenthesis),
         _isEqualNodes(node.exceptionParameter, toNode.exceptionParameter),
         _isEqualTokens(node.comma, toNode.comma),
         _isEqualNodes(node.stackTraceParameter, toNode.stackTraceParameter),
         _isEqualTokens(node.rightParenthesis, toNode.rightParenthesis),
         _isEqualNodes(node.body, toNode.body));
   }
 
@@ skipping 41 matching lines @@
   @override
   bool visitCommentReference(CommentReference node) {
     CommentReference toNode = this._toNode as CommentReference;
     return _and(_isEqualTokens(node.newKeyword, toNode.newKeyword),
         _isEqualNodes(node.identifier, toNode.identifier));
   }
 
   @override
   bool visitCompilationUnit(CompilationUnit node) {
     CompilationUnit toNode = this._toNode as CompilationUnit;
-    if (_and(_isEqualTokens(node.beginToken, toNode.beginToken),
+    if (_and(
+        _isEqualTokens(node.beginToken, toNode.beginToken),
         _isEqualNodes(node.scriptTag, toNode.scriptTag),
         _isEqualNodeLists(node.directives, toNode.directives),
         _isEqualNodeLists(node.declarations, toNode.declarations),
         _isEqualTokens(node.endToken, toNode.endToken))) {
       toNode.element = node.element;
       return true;
     }
     return false;
   }
 
   @override
   bool visitConditionalExpression(ConditionalExpression node) {
     ConditionalExpression toNode = this._toNode as ConditionalExpression;
-    if (_and(_isEqualNodes(node.condition, toNode.condition),
+    if (_and(
+        _isEqualNodes(node.condition, toNode.condition),
         _isEqualTokens(node.question, toNode.question),
         _isEqualNodes(node.thenExpression, toNode.thenExpression),
         _isEqualTokens(node.colon, toNode.colon),
         _isEqualNodes(node.elseExpression, toNode.elseExpression))) {
       toNode.propagatedType = node.propagatedType;
       toNode.staticType = node.staticType;
       return true;
     }
     return false;
   }
@@ skipping 18 matching lines @@
       toNode.element = node.element;
       return true;
     }
     return false;
   }
 
   @override
   bool visitConstructorFieldInitializer(ConstructorFieldInitializer node) {
     ConstructorFieldInitializer toNode =
         this._toNode as ConstructorFieldInitializer;
-    return _and(_isEqualTokens(node.thisKeyword, toNode.thisKeyword),
+    return _and(
+        _isEqualTokens(node.thisKeyword, toNode.thisKeyword),
         _isEqualTokens(node.period, toNode.period),
         _isEqualNodes(node.fieldName, toNode.fieldName),
         _isEqualTokens(node.equals, toNode.equals),
         _isEqualNodes(node.expression, toNode.expression));
   }
 
   @override
   bool visitConstructorName(ConstructorName node) {
     ConstructorName toNode = this._toNode as ConstructorName;
-    if (_and(_isEqualNodes(node.type, toNode.type),
+    if (_and(
+        _isEqualNodes(node.type, toNode.type),
         _isEqualTokens(node.period, toNode.period),
         _isEqualNodes(node.name, toNode.name))) {
       toNode.staticElement = node.staticElement;
       return true;
     }
     return false;
   }
 
   @override
   bool visitContinueStatement(ContinueStatement node) {
     ContinueStatement toNode = this._toNode as ContinueStatement;
-    if (_and(_isEqualTokens(node.continueKeyword, toNode.continueKeyword),
+    if (_and(
+        _isEqualTokens(node.continueKeyword, toNode.continueKeyword),
         _isEqualNodes(node.label, toNode.label),
         _isEqualTokens(node.semicolon, toNode.semicolon))) {
       // TODO(paulberry): map node.target to toNode.target.
       return true;
     }
     return false;
   }
 
   @override
   bool visitDeclaredIdentifier(DeclaredIdentifier node) {
     DeclaredIdentifier toNode = this._toNode as DeclaredIdentifier;
     return _and(
         _isEqualNodes(node.documentationComment, toNode.documentationComment),
         _isEqualNodeLists(node.metadata, toNode.metadata),
         _isEqualTokens(node.keyword, toNode.keyword),
         _isEqualNodes(node.type, toNode.type),
         _isEqualNodes(node.identifier, toNode.identifier));
   }
 
   @override
   bool visitDefaultFormalParameter(DefaultFormalParameter node) {
     DefaultFormalParameter toNode = this._toNode as DefaultFormalParameter;
-    return _and(_isEqualNodes(node.parameter, toNode.parameter),
+    return _and(
+        _isEqualNodes(node.parameter, toNode.parameter),
         node.kind == toNode.kind,
         _isEqualTokens(node.separator, toNode.separator),
         _isEqualNodes(node.defaultValue, toNode.defaultValue));
   }
 
   @override
   bool visitDoStatement(DoStatement node) {
     DoStatement toNode = this._toNode as DoStatement;
-    return _and(_isEqualTokens(node.doKeyword, toNode.doKeyword),
+    return _and(
+        _isEqualTokens(node.doKeyword, toNode.doKeyword),
         _isEqualNodes(node.body, toNode.body),
         _isEqualTokens(node.whileKeyword, toNode.whileKeyword),
         _isEqualTokens(node.leftParenthesis, toNode.leftParenthesis),
         _isEqualNodes(node.condition, toNode.condition),
         _isEqualTokens(node.rightParenthesis, toNode.rightParenthesis),
         _isEqualTokens(node.semicolon, toNode.semicolon));
   }
 
   @override
   bool visitDoubleLiteral(DoubleLiteral node) {
@@ skipping 100 matching lines @@
         _isEqualTokens(node.keyword, toNode.keyword),
         _isEqualNodes(node.type, toNode.type),
         _isEqualTokens(node.thisKeyword, toNode.thisKeyword),
         _isEqualTokens(node.period, toNode.period),
         _isEqualNodes(node.identifier, toNode.identifier));
   }
 
   @override
   bool visitForEachStatement(ForEachStatement node) {
     ForEachStatement toNode = this._toNode as ForEachStatement;
-    return _and(_isEqualTokens(node.forKeyword, toNode.forKeyword),
+    return _and(
+        _isEqualTokens(node.forKeyword, toNode.forKeyword),
         _isEqualTokens(node.leftParenthesis, toNode.leftParenthesis),
         _isEqualNodes(node.loopVariable, toNode.loopVariable),
         _isEqualTokens(node.inKeyword, toNode.inKeyword),
         _isEqualNodes(node.iterable, toNode.iterable),
         _isEqualTokens(node.rightParenthesis, toNode.rightParenthesis),
         _isEqualNodes(node.body, toNode.body));
   }
 
   @override
   bool visitFormalParameterList(FormalParameterList node) {
     FormalParameterList toNode = this._toNode as FormalParameterList;
-    return _and(_isEqualTokens(node.leftParenthesis, toNode.leftParenthesis),
+    return _and(
+        _isEqualTokens(node.leftParenthesis, toNode.leftParenthesis),
         _isEqualNodeLists(node.parameters, toNode.parameters),
         _isEqualTokens(node.leftDelimiter, toNode.leftDelimiter),
         _isEqualTokens(node.rightDelimiter, toNode.rightDelimiter),
         _isEqualTokens(node.rightParenthesis, toNode.rightParenthesis));
   }
 
   @override
   bool visitForStatement(ForStatement node) {
     ForStatement toNode = this._toNode as ForStatement;
-    return _and(_isEqualTokens(node.forKeyword, toNode.forKeyword),
+    return _and(
+        _isEqualTokens(node.forKeyword, toNode.forKeyword),
         _isEqualTokens(node.leftParenthesis, toNode.leftParenthesis),
         _isEqualNodes(node.variables, toNode.variables),
         _isEqualNodes(node.initialization, toNode.initialization),
         _isEqualTokens(node.leftSeparator, toNode.leftSeparator),
         _isEqualNodes(node.condition, toNode.condition),
         _isEqualTokens(node.rightSeparator, toNode.rightSeparator),
         _isEqualNodeLists(node.updaters, toNode.updaters),
         _isEqualTokens(node.rightParenthesis, toNode.rightParenthesis),
         _isEqualNodes(node.body, toNode.body));
   }
@@ skipping 75 matching lines @@
   @override
   bool visitHideCombinator(HideCombinator node) {
     HideCombinator toNode = this._toNode as HideCombinator;
     return _and(_isEqualTokens(node.keyword, toNode.keyword),
         _isEqualNodeLists(node.hiddenNames, toNode.hiddenNames));
   }
 
   @override
   bool visitIfStatement(IfStatement node) {
     IfStatement toNode = this._toNode as IfStatement;
-    return _and(_isEqualTokens(node.ifKeyword, toNode.ifKeyword),
+    return _and(
+        _isEqualTokens(node.ifKeyword, toNode.ifKeyword),
         _isEqualTokens(node.leftParenthesis, toNode.leftParenthesis),
         _isEqualNodes(node.condition, toNode.condition),
         _isEqualTokens(node.rightParenthesis, toNode.rightParenthesis),
         _isEqualNodes(node.thenStatement, toNode.thenStatement),
         _isEqualTokens(node.elseKeyword, toNode.elseKeyword),
         _isEqualNodes(node.elseStatement, toNode.elseStatement));
   }
 
   @override
   bool visitImplementsClause(ImplementsClause node) {
@@ skipping 17 matching lines @@
         _isEqualTokens(node.semicolon, toNode.semicolon))) {
       toNode.element = node.element;
       return true;
     }
     return false;
   }
 
   @override
   bool visitIndexExpression(IndexExpression node) {
     IndexExpression toNode = this._toNode as IndexExpression;
-    if (_and(_isEqualNodes(node.target, toNode.target),
+    if (_and(
+        _isEqualNodes(node.target, toNode.target),
         _isEqualTokens(node.leftBracket, toNode.leftBracket),
         _isEqualNodes(node.index, toNode.index),
         _isEqualTokens(node.rightBracket, toNode.rightBracket))) {
       toNode.auxiliaryElements = node.auxiliaryElements;
       toNode.propagatedElement = node.propagatedElement;
       toNode.propagatedType = node.propagatedType;
       toNode.staticElement = node.staticElement;
       toNode.staticType = node.staticType;
       return true;
     }
     return false;
   }
 
   @override
   bool visitInstanceCreationExpression(InstanceCreationExpression node) {
     InstanceCreationExpression toNode =
         this._toNode as InstanceCreationExpression;
-    if (_and(_isEqualTokens(node.keyword, toNode.keyword),
+    if (_and(
+        _isEqualTokens(node.keyword, toNode.keyword),
         _isEqualNodes(node.constructorName, toNode.constructorName),
         _isEqualNodes(node.argumentList, toNode.argumentList))) {
       toNode.propagatedType = node.propagatedType;
       toNode.staticElement = node.staticElement;
       toNode.staticType = node.staticType;
       return true;
     }
     return false;
   }
 
   @override
   bool visitIntegerLiteral(IntegerLiteral node) {
     IntegerLiteral toNode = this._toNode as IntegerLiteral;
     if (_and(_isEqualTokens(node.literal, toNode.literal),
         node.value == toNode.value)) {
       toNode.propagatedType = node.propagatedType;
       toNode.staticType = node.staticType;
       return true;
     }
     return false;
   }
 
   @override
   bool visitInterpolationExpression(InterpolationExpression node) {
     InterpolationExpression toNode = this._toNode as InterpolationExpression;
-    return _and(_isEqualTokens(node.leftBracket, toNode.leftBracket),
+    return _and(
+        _isEqualTokens(node.leftBracket, toNode.leftBracket),
         _isEqualNodes(node.expression, toNode.expression),
         _isEqualTokens(node.rightBracket, toNode.rightBracket));
   }
 
   @override
   bool visitInterpolationString(InterpolationString node) {
     InterpolationString toNode = this._toNode as InterpolationString;
     return _and(_isEqualTokens(node.contents, toNode.contents),
         node.value == toNode.value);
   }
 
   @override
   bool visitIsExpression(IsExpression node) {
     IsExpression toNode = this._toNode as IsExpression;
-    if (_and(_isEqualNodes(node.expression, toNode.expression),
+    if (_and(
+        _isEqualNodes(node.expression, toNode.expression),
         _isEqualTokens(node.isOperator, toNode.isOperator),
         _isEqualTokens(node.notOperator, toNode.notOperator),
         _isEqualNodes(node.type, toNode.type))) {
       toNode.propagatedType = node.propagatedType;
       toNode.staticType = node.staticType;
       return true;
     }
     return false;
   }
 
@@ skipping 33 matching lines @@
       toNode.propagatedType = node.propagatedType;
       toNode.staticType = node.staticType;
       return true;
     }
     return false;
   }
 
   @override
   bool visitListLiteral(ListLiteral node) {
     ListLiteral toNode = this._toNode as ListLiteral;
-    if (_and(_isEqualTokens(node.constKeyword, toNode.constKeyword),
+    if (_and(
+        _isEqualTokens(node.constKeyword, toNode.constKeyword),
         _isEqualNodes(node.typeArguments, toNode.typeArguments),
         _isEqualTokens(node.leftBracket, toNode.leftBracket),
         _isEqualNodeLists(node.elements, toNode.elements),
         _isEqualTokens(node.rightBracket, toNode.rightBracket))) {
       toNode.propagatedType = node.propagatedType;
       toNode.staticType = node.staticType;
       return true;
     }
     return false;
   }
 
   @override
   bool visitMapLiteral(MapLiteral node) {
     MapLiteral toNode = this._toNode as MapLiteral;
-    if (_and(_isEqualTokens(node.constKeyword, toNode.constKeyword),
+    if (_and(
+        _isEqualTokens(node.constKeyword, toNode.constKeyword),
         _isEqualNodes(node.typeArguments, toNode.typeArguments),
         _isEqualTokens(node.leftBracket, toNode.leftBracket),
         _isEqualNodeLists(node.entries, toNode.entries),
         _isEqualTokens(node.rightBracket, toNode.rightBracket))) {
       toNode.propagatedType = node.propagatedType;
       toNode.staticType = node.staticType;
       return true;
     }
     return false;
   }
 
   @override
   bool visitMapLiteralEntry(MapLiteralEntry node) {
     MapLiteralEntry toNode = this._toNode as MapLiteralEntry;
-    return _and(_isEqualNodes(node.key, toNode.key),
+    return _and(
+        _isEqualNodes(node.key, toNode.key),
         _isEqualTokens(node.separator, toNode.separator),
         _isEqualNodes(node.value, toNode.value));
   }
 
   @override
   bool visitMethodDeclaration(MethodDeclaration node) {
     MethodDeclaration toNode = this._toNode as MethodDeclaration;
     return _and(
         _isEqualNodes(node.documentationComment, toNode.documentationComment),
         _isEqualNodeLists(node.metadata, toNode.metadata),
         _isEqualTokens(node.externalKeyword, toNode.externalKeyword),
         _isEqualTokens(node.modifierKeyword, toNode.modifierKeyword),
         _isEqualNodes(node.returnType, toNode.returnType),
         _isEqualTokens(node.propertyKeyword, toNode.propertyKeyword),
         _isEqualTokens(node.propertyKeyword, toNode.propertyKeyword),
         _isEqualNodes(node.name, toNode.name),
         _isEqualNodes(node.parameters, toNode.parameters),
         _isEqualNodes(node.body, toNode.body));
   }
 
   @override
   bool visitMethodInvocation(MethodInvocation node) {
     MethodInvocation toNode = this._toNode as MethodInvocation;
-    if (_and(_isEqualNodes(node.target, toNode.target),
+    if (_and(
+        _isEqualNodes(node.target, toNode.target),
         _isEqualTokens(node.operator, toNode.operator),
         _isEqualNodes(node.methodName, toNode.methodName),
         _isEqualNodes(node.argumentList, toNode.argumentList))) {
       toNode.propagatedType = node.propagatedType;
       toNode.staticType = node.staticType;
       return true;
     }
     return false;
   }
 
@@ skipping 12 matching lines @@
   @override
   bool visitNativeClause(NativeClause node) {
     NativeClause toNode = this._toNode as NativeClause;
     return _and(_isEqualTokens(node.nativeKeyword, toNode.nativeKeyword),
         _isEqualNodes(node.name, toNode.name));
   }
 
   @override
   bool visitNativeFunctionBody(NativeFunctionBody node) {
     NativeFunctionBody toNode = this._toNode as NativeFunctionBody;
-    return _and(_isEqualTokens(node.nativeKeyword, toNode.nativeKeyword),
+    return _and(
+        _isEqualTokens(node.nativeKeyword, toNode.nativeKeyword),
         _isEqualNodes(node.stringLiteral, toNode.stringLiteral),
         _isEqualTokens(node.semicolon, toNode.semicolon));
   }
 
   @override
   bool visitNullLiteral(NullLiteral node) {
     NullLiteral toNode = this._toNode as NullLiteral;
     if (_isEqualTokens(node.literal, toNode.literal)) {
       toNode.propagatedType = node.propagatedType;
       toNode.staticType = node.staticType;
       return true;
     }
     return false;
   }
 
   @override
   bool visitParenthesizedExpression(ParenthesizedExpression node) {
     ParenthesizedExpression toNode = this._toNode as ParenthesizedExpression;
-    if (_and(_isEqualTokens(node.leftParenthesis, toNode.leftParenthesis),
+    if (_and(
+        _isEqualTokens(node.leftParenthesis, toNode.leftParenthesis),
         _isEqualNodes(node.expression, toNode.expression),
         _isEqualTokens(node.rightParenthesis, toNode.rightParenthesis))) {
       toNode.propagatedType = node.propagatedType;
       toNode.staticType = node.staticType;
       return true;
     }
     return false;
   }
 
   @override
@@ skipping 37 matching lines @@
       toNode.staticElement = node.staticElement;
       toNode.staticType = node.staticType;
       return true;
     }
     return false;
   }
 
   @override
   bool visitPrefixedIdentifier(PrefixedIdentifier node) {
     PrefixedIdentifier toNode = this._toNode as PrefixedIdentifier;
-    if (_and(_isEqualNodes(node.prefix, toNode.prefix),
+    if (_and(
+        _isEqualNodes(node.prefix, toNode.prefix),
         _isEqualTokens(node.period, toNode.period),
         _isEqualNodes(node.identifier, toNode.identifier))) {
       toNode.propagatedType = node.propagatedType;
       toNode.staticType = node.staticType;
       return true;
     }
     return false;
   }
 
   @override
   bool visitPrefixExpression(PrefixExpression node) {
     PrefixExpression toNode = this._toNode as PrefixExpression;
     if (_and(_isEqualTokens(node.operator, toNode.operator),
         _isEqualNodes(node.operand, toNode.operand))) {
       toNode.propagatedElement = node.propagatedElement;
       toNode.propagatedType = node.propagatedType;
       toNode.staticElement = node.staticElement;
       toNode.staticType = node.staticType;
       return true;
     }
     return false;
   }
 
   @override
   bool visitPropertyAccess(PropertyAccess node) {
     PropertyAccess toNode = this._toNode as PropertyAccess;
-    if (_and(_isEqualNodes(node.target, toNode.target),
+    if (_and(
+        _isEqualNodes(node.target, toNode.target),
         _isEqualTokens(node.operator, toNode.operator),
         _isEqualNodes(node.propertyName, toNode.propertyName))) {
       toNode.propagatedType = node.propagatedType;
       toNode.staticType = node.staticType;
       return true;
     }
     return false;
   }
 
   @override
   bool visitRedirectingConstructorInvocation(
       RedirectingConstructorInvocation node) {
     RedirectingConstructorInvocation toNode =
         this._toNode as RedirectingConstructorInvocation;
-    if (_and(_isEqualTokens(node.thisKeyword, toNode.thisKeyword),
+    if (_and(
+        _isEqualTokens(node.thisKeyword, toNode.thisKeyword),
         _isEqualTokens(node.period, toNode.period),
         _isEqualNodes(node.constructorName, toNode.constructorName),
         _isEqualNodes(node.argumentList, toNode.argumentList))) {
       toNode.staticElement = node.staticElement;
       return true;
     }
     return false;
   }
 
   @override
   bool visitRethrowExpression(RethrowExpression node) {
     RethrowExpression toNode = this._toNode as RethrowExpression;
     if (_isEqualTokens(node.rethrowKeyword, toNode.rethrowKeyword)) {
       toNode.propagatedType = node.propagatedType;
       toNode.staticType = node.staticType;
       return true;
     }
     return false;
   }
 
   @override
   bool visitReturnStatement(ReturnStatement node) {
     ReturnStatement toNode = this._toNode as ReturnStatement;
-    return _and(_isEqualTokens(node.returnKeyword, toNode.returnKeyword),
+    return _and(
+        _isEqualTokens(node.returnKeyword, toNode.returnKeyword),
         _isEqualNodes(node.expression, toNode.expression),
         _isEqualTokens(node.semicolon, toNode.semicolon));
   }
 
   @override
   bool visitScriptTag(ScriptTag node) {
     ScriptTag toNode = this._toNode as ScriptTag;
     return _isEqualTokens(node.scriptTag, toNode.scriptTag);
   }
 
@@ skipping 49 matching lines @@
       toNode.staticType = node.staticType;
       return true;
     }
     return false;
   }
 
   @override
   bool visitSuperConstructorInvocation(SuperConstructorInvocation node) {
     SuperConstructorInvocation toNode =
         this._toNode as SuperConstructorInvocation;
-    if (_and(_isEqualTokens(node.superKeyword, toNode.superKeyword),
+    if (_and(
+        _isEqualTokens(node.superKeyword, toNode.superKeyword),
         _isEqualTokens(node.period, toNode.period),
         _isEqualNodes(node.constructorName, toNode.constructorName),
         _isEqualNodes(node.argumentList, toNode.argumentList))) {
       toNode.staticElement = node.staticElement;
       return true;
     }
     return false;
   }
 
   @override
   bool visitSuperExpression(SuperExpression node) {
     SuperExpression toNode = this._toNode as SuperExpression;
     if (_isEqualTokens(node.superKeyword, toNode.superKeyword)) {
       toNode.propagatedType = node.propagatedType;
       toNode.staticType = node.staticType;
       return true;
     }
     return false;
   }
 
   @override
   bool visitSwitchCase(SwitchCase node) {
     SwitchCase toNode = this._toNode as SwitchCase;
-    return _and(_isEqualNodeLists(node.labels, toNode.labels),
+    return _and(
+        _isEqualNodeLists(node.labels, toNode.labels),
         _isEqualTokens(node.keyword, toNode.keyword),
         _isEqualNodes(node.expression, toNode.expression),
         _isEqualTokens(node.colon, toNode.colon),
         _isEqualNodeLists(node.statements, toNode.statements));
   }
 
   @override
   bool visitSwitchDefault(SwitchDefault node) {
     SwitchDefault toNode = this._toNode as SwitchDefault;
-    return _and(_isEqualNodeLists(node.labels, toNode.labels),
+    return _and(
+        _isEqualNodeLists(node.labels, toNode.labels),
         _isEqualTokens(node.keyword, toNode.keyword),
         _isEqualTokens(node.colon, toNode.colon),
         _isEqualNodeLists(node.statements, toNode.statements));
   }
 
   @override
   bool visitSwitchStatement(SwitchStatement node) {
     SwitchStatement toNode = this._toNode as SwitchStatement;
-    return _and(_isEqualTokens(node.switchKeyword, toNode.switchKeyword),
+    return _and(
+        _isEqualTokens(node.switchKeyword, toNode.switchKeyword),
         _isEqualTokens(node.leftParenthesis, toNode.leftParenthesis),
         _isEqualNodes(node.expression, toNode.expression),
         _isEqualTokens(node.rightParenthesis, toNode.rightParenthesis),
         _isEqualTokens(node.leftBracket, toNode.leftBracket),
         _isEqualNodeLists(node.members, toNode.members),
         _isEqualTokens(node.rightBracket, toNode.rightBracket));
   }
 
   @override
   bool visitSymbolLiteral(SymbolLiteral node) {
@@ skipping 37 matching lines @@
     return _and(
         _isEqualNodes(node.documentationComment, toNode.documentationComment),
         _isEqualNodeLists(node.metadata, toNode.metadata),
         _isEqualNodes(node.variables, toNode.variables),
         _isEqualTokens(node.semicolon, toNode.semicolon));
   }
 
   @override
   bool visitTryStatement(TryStatement node) {
     TryStatement toNode = this._toNode as TryStatement;
-    return _and(_isEqualTokens(node.tryKeyword, toNode.tryKeyword),
+    return _and(
+        _isEqualTokens(node.tryKeyword, toNode.tryKeyword),
         _isEqualNodes(node.body, toNode.body),
         _isEqualNodeLists(node.catchClauses, toNode.catchClauses),
         _isEqualTokens(node.finallyKeyword, toNode.finallyKeyword),
         _isEqualNodes(node.finallyBlock, toNode.finallyBlock));
   }
 
   @override
   bool visitTypeArgumentList(TypeArgumentList node) {
     TypeArgumentList toNode = this._toNode as TypeArgumentList;
-    return _and(_isEqualTokens(node.leftBracket, toNode.leftBracket),
+    return _and(
+        _isEqualTokens(node.leftBracket, toNode.leftBracket),
         _isEqualNodeLists(node.arguments, toNode.arguments),
         _isEqualTokens(node.rightBracket, toNode.rightBracket));
   }
 
   @override
   bool visitTypeName(TypeName node) {
     TypeName toNode = this._toNode as TypeName;
     if (_and(_isEqualNodes(node.name, toNode.name),
         _isEqualNodes(node.typeArguments, toNode.typeArguments))) {
       toNode.type = node.type;
       return true;
     }
     return false;
   }
 
   @override
   bool visitTypeParameter(TypeParameter node) {
     TypeParameter toNode = this._toNode as TypeParameter;
     return _and(
         _isEqualNodes(node.documentationComment, toNode.documentationComment),
         _isEqualNodeLists(node.metadata, toNode.metadata),
         _isEqualNodes(node.name, toNode.name),
         _isEqualTokens(node.extendsKeyword, toNode.extendsKeyword),
         _isEqualNodes(node.bound, toNode.bound));
   }
 
   @override
   bool visitTypeParameterList(TypeParameterList node) {
     TypeParameterList toNode = this._toNode as TypeParameterList;
-    return _and(_isEqualTokens(node.leftBracket, toNode.leftBracket),
+    return _and(
+        _isEqualTokens(node.leftBracket, toNode.leftBracket),
         _isEqualNodeLists(node.typeParameters, toNode.typeParameters),
         _isEqualTokens(node.rightBracket, toNode.rightBracket));
   }
 
   @override
   bool visitVariableDeclaration(VariableDeclaration node) {
     VariableDeclaration toNode = this._toNode as VariableDeclaration;
     return _and(
         _isEqualNodes(node.documentationComment, toNode.documentationComment),
         _isEqualNodeLists(node.metadata, toNode.metadata),
@@ skipping 17 matching lines @@
   bool visitVariableDeclarationStatement(VariableDeclarationStatement node) {
     VariableDeclarationStatement toNode =
         this._toNode as VariableDeclarationStatement;
     return _and(_isEqualNodes(node.variables, toNode.variables),
         _isEqualTokens(node.semicolon, toNode.semicolon));
   }
 
   @override
   bool visitWhileStatement(WhileStatement node) {
     WhileStatement toNode = this._toNode as WhileStatement;
-    return _and(_isEqualTokens(node.whileKeyword, toNode.whileKeyword),
+    return _and(
+        _isEqualTokens(node.whileKeyword, toNode.whileKeyword),
         _isEqualTokens(node.leftParenthesis, toNode.leftParenthesis),
         _isEqualNodes(node.condition, toNode.condition),
         _isEqualTokens(node.rightParenthesis, toNode.rightParenthesis),
         _isEqualNodes(node.body, toNode.body));
   }
 
   @override
   bool visitWithClause(WithClause node) {
     WithClause toNode = this._toNode as WithClause;
     return _and(_isEqualTokens(node.withKeyword, toNode.withKeyword),
         _isEqualNodeLists(node.mixinTypes, toNode.mixinTypes));
   }
 
   @override
   bool visitYieldStatement(YieldStatement node) {
     YieldStatement toNode = this._toNode as YieldStatement;
-    return _and(_isEqualTokens(node.yieldKeyword, toNode.yieldKeyword),
+    return _and(
+        _isEqualTokens(node.yieldKeyword, toNode.yieldKeyword),
         _isEqualNodes(node.expression, toNode.expression),
         _isEqualTokens(node.semicolon, toNode.semicolon));
   }
 
   /**
    * Return `true` if all of the parameters are `true`.
    */
-  bool _and(bool b1, bool b2, [bool b3 = true, bool b4 = true, bool b5 = true,
-      bool b6 = true, bool b7 = true, bool b8 = true, bool b9 = true,
-      bool b10 = true, bool b11 = true, bool b12 = true, bool b13 = true]) {
+  bool _and(bool b1, bool b2,
+      [bool b3 = true,
+      bool b4 = true,
+      bool b5 = true,
+      bool b6 = true,
+      bool b7 = true,
+      bool b8 = true,
+      bool b9 = true,
+      bool b10 = true,
+      bool b11 = true,
+      bool b12 = true,
+      bool b13 = true]) {
     // TODO(brianwilkerson) Inline this method.
     return b1 &&
         b2 &&
         b3 &&
         b4 &&
         b5 &&
         b6 &&
         b7 &&
         b8 &&
         b9 &&
@@ skipping 89 matching lines @@
   }
 
   /**
    * Copy resolution data from the [fromNode] to the [toNode].
    */
   static void copyResolutionData(AstNode fromNode, AstNode toNode) {
     ResolutionCopier copier = new ResolutionCopier();
     copier._isEqualNodes(fromNode, toNode);
   }
 }