New analyzer_experimental snapshot.

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

 // This code was auto-generated, is not intended to be edited, and is subject to
 // significant change. Please see the README file for more information.
 library engine.parser;
 import 'dart:collection';
 import 'java_core.dart';
 import 'java_engine.dart';
 import 'instrumentation.dart';
 import 'error.dart';
 import 'source.dart';
 import 'scanner.dart';
 import 'ast.dart';
 import 'utilities_dart.dart';
 /**
  * Instances of the class `CommentAndMetadata` implement a simple data-holder for a method
  * that needs to return multiple values.
+ *
  * @coverage dart.engine.parser
  */
 class CommentAndMetadata {
 
   /**
    * The documentation comment that was parsed, or `null` if none was given.
    */
   Comment _comment;
 
   /**
    * The metadata that was parsed.
    */
   List<Annotation> _metadata;
 
   /**
    * Initialize a newly created holder with the given data.
+   *
    * @param comment the documentation comment that was parsed
    * @param metadata the metadata that was parsed
    */
   CommentAndMetadata(Comment comment, List<Annotation> metadata) {
     this._comment = comment;
     this._metadata = metadata;
   }
 
   /**
    * Return the documentation comment that was parsed, or `null` if none was given.
+   *
    * @return the documentation comment that was parsed
    */
   Comment get comment => _comment;
 
   /**
    * Return the metadata that was parsed. If there was no metadata, then the list will be empty.
+   *
    * @return the metadata that was parsed
    */
   List<Annotation> get metadata => _metadata;
 }
 /**
  * Instances of the class `FinalConstVarOrType` implement a simple data-holder for a method
  * that needs to return multiple values.
+ *
  * @coverage dart.engine.parser
  */
 class FinalConstVarOrType {
 
   /**
    * The 'final', 'const' or 'var' keyword, or `null` if none was given.
    */
   Token _keyword;
 
   /**
    * The type, of `null` if no type was specified.
    */
   TypeName _type;
 
   /**
    * Initialize a newly created holder with the given data.
+   *
    * @param keyword the 'final', 'const' or 'var' keyword
    * @param type the type
    */
   FinalConstVarOrType(Token keyword, TypeName type) {
     this._keyword = keyword;
     this._type = type;
   }
 
   /**
    * Return the 'final', 'const' or 'var' keyword, or `null` if none was given.
+   *
    * @return the 'final', 'const' or 'var' keyword
    */
   Token get keyword => _keyword;
 
   /**
    * Return the type, of `null` if no type was specified.
+   *
    * @return the type
    */
   TypeName get type => _type;
 }
 /**
  * Instances of the class `Modifiers` implement a simple data-holder for a method that needs
  * to return multiple values.
+ *
  * @coverage dart.engine.parser
  */
 class Modifiers {
 
   /**
    * The token representing the keyword 'abstract', or `null` if the keyword was not found.
    */
   Token _abstractKeyword;
 
   /**
@@ skipping 22 matching lines @@
   Token _staticKeyword;
 
   /**
    * The token representing the keyword 'var', or `null` if the keyword was not found.
    */
   Token _varKeyword;
 
   /**
    * Return the token representing the keyword 'abstract', or `null` if the keyword was not
    * found.
+   *
    * @return the token representing the keyword 'abstract'
    */
   Token get abstractKeyword => _abstractKeyword;
 
   /**
    * Return the token representing the keyword 'const', or `null` if the keyword was not
    * found.
+   *
    * @return the token representing the keyword 'const'
    */
   Token get constKeyword => _constKeyword;
 
   /**
    * Return the token representing the keyword 'external', or `null` if the keyword was not
    * found.
+   *
    * @return the token representing the keyword 'external'
    */
   Token get externalKeyword => _externalKeyword;
 
   /**
    * Return the token representing the keyword 'factory', or `null` if the keyword was not
    * found.
+   *
    * @return the token representing the keyword 'factory'
    */
   Token get factoryKeyword => _factoryKeyword;
 
   /**
    * Return the token representing the keyword 'final', or `null` if the keyword was not
    * found.
+   *
    * @return the token representing the keyword 'final'
    */
   Token get finalKeyword => _finalKeyword;
 
   /**
    * Return the token representing the keyword 'static', or `null` if the keyword was not
    * found.
+   *
    * @return the token representing the keyword 'static'
    */
   Token get staticKeyword => _staticKeyword;
 
   /**
    * Return the token representing the keyword 'var', or `null` if the keyword was not found.
+   *
    * @return the token representing the keyword 'var'
    */
   Token get varKeyword => _varKeyword;
 
   /**
    * Set the token representing the keyword 'abstract' to the given token.
+   *
    * @param abstractKeyword the token representing the keyword 'abstract'
    */
   void set abstractKeyword(Token abstractKeyword2) {
     this._abstractKeyword = abstractKeyword2;
   }
 
   /**
    * Set the token representing the keyword 'const' to the given token.
+   *
    * @param constKeyword the token representing the keyword 'const'
    */
   void set constKeyword(Token constKeyword2) {
     this._constKeyword = constKeyword2;
   }
 
   /**
    * Set the token representing the keyword 'external' to the given token.
+   *
    * @param externalKeyword the token representing the keyword 'external'
    */
   void set externalKeyword(Token externalKeyword2) {
     this._externalKeyword = externalKeyword2;
   }
 
   /**
    * Set the token representing the keyword 'factory' to the given token.
+   *
    * @param factoryKeyword the token representing the keyword 'factory'
    */
   void set factoryKeyword(Token factoryKeyword2) {
     this._factoryKeyword = factoryKeyword2;
   }
 
   /**
    * Set the token representing the keyword 'final' to the given token.
+   *
    * @param finalKeyword the token representing the keyword 'final'
    */
   void set finalKeyword(Token finalKeyword2) {
     this._finalKeyword = finalKeyword2;
   }
 
   /**
    * Set the token representing the keyword 'static' to the given token.
+   *
    * @param staticKeyword the token representing the keyword 'static'
    */
   void set staticKeyword(Token staticKeyword2) {
     this._staticKeyword = staticKeyword2;
   }
 
   /**
    * Set the token representing the keyword 'var' to the given token.
+   *
    * @param varKeyword the token representing the keyword 'var'
    */
   void set varKeyword(Token varKeyword2) {
     this._varKeyword = varKeyword2;
   }
   String toString() {
     JavaStringBuilder builder = new JavaStringBuilder();
     bool needsSpace = appendKeyword(builder, false, _abstractKeyword);
     needsSpace = appendKeyword(builder, needsSpace, _constKeyword);
     needsSpace = appendKeyword(builder, needsSpace, _externalKeyword);
     needsSpace = appendKeyword(builder, needsSpace, _factoryKeyword);
     needsSpace = appendKeyword(builder, needsSpace, _finalKeyword);
     needsSpace = appendKeyword(builder, needsSpace, _staticKeyword);
     appendKeyword(builder, needsSpace, _varKeyword);
     return builder.toString();
   }
 
   /**
    * If the given keyword is not `null`, append it to the given builder, prefixing it with a
    * space if needed.
+   *
    * @param builder the builder to which the keyword will be appended
    * @param needsSpace `true` if the keyword needs to be prefixed with a space
    * @param keyword the keyword to be appended
    * @return `true` if subsequent keywords need to be prefixed with a space
    */
   bool appendKeyword(JavaStringBuilder builder, bool needsSpace, Token keyword) {
     if (keyword != null) {
       if (needsSpace) {
         builder.appendChar(0x20);
       }
       builder.append(keyword.lexeme);
       return true;
     }
     return needsSpace;
   }
 }
 /**
  * Instances of the class `Parser` are used to parse tokens into an AST structure.
+ *
  * @coverage dart.engine.parser
  */
 class Parser {
 
   /**
    * The source being parsed.
    */
   Source _source;
 
   /**
@@ skipping 16 matching lines @@
    */
   bool _inSwitch = false;
   static String _HIDE = "hide";
   static String _OF = "of";
   static String _ON = "on";
   static String _SHOW = "show";
   static String _NATIVE = "native";
 
   /**
    * Initialize a newly created parser.
+   *
    * @param source the source being parsed
    * @param errorListener the error listener that will be informed of any errors that are found
-   * during the parse
+   *          during the parse
    */
   Parser(Source source, AnalysisErrorListener errorListener) {
     this._source = source;
     this._errorListener = errorListener;
   }
 
   /**
    * Parse a compilation unit, starting with the given token.
+   *
    * @param token the first token of the compilation unit
    * @return the compilation unit that was parsed
    */
   CompilationUnit parseCompilationUnit(Token token) {
     InstrumentationBuilder instrumentation = Instrumentation.builder2("dart.engine.Parser.parseCompilationUnit");
     try {
       _currentToken = token;
       return parseCompilationUnit2();
     } finally {
       instrumentation.log();
     }
   }
 
   /**
    * Parse an expression, starting with the given token.
+   *
    * @param token the first token of the expression
    * @return the expression that was parsed, or `null` if the tokens do not represent a
-   * recognizable expression
+   *         recognizable expression
    */
   Expression parseExpression(Token token) {
     InstrumentationBuilder instrumentation = Instrumentation.builder2("dart.engine.Parser.parseExpression");
     try {
       _currentToken = token;
       return parseExpression2();
     } finally {
       instrumentation.log();
     }
   }
 
   /**
    * Parse a statement, starting with the given token.
+   *
    * @param token the first token of the statement
    * @return the statement that was parsed, or `null` if the tokens do not represent a
-   * recognizable statement
+   *         recognizable statement
    */
   Statement parseStatement(Token token) {
     InstrumentationBuilder instrumentation = Instrumentation.builder2("dart.engine.Parser.parseStatement");
     try {
       _currentToken = token;
       return parseStatement2();
     } finally {
       instrumentation.log();
     }
   }
 
   /**
    * Parse a sequence of statements, starting with the given token.
+   *
    * @param token the first token of the sequence of statement
    * @return the statements that were parsed, or `null` if the tokens do not represent a
-   * recognizable sequence of statements
+   *         recognizable sequence of statements
    */
   List<Statement> parseStatements(Token token) {
     InstrumentationBuilder instrumentation = Instrumentation.builder2("dart.engine.Parser.parseStatements");
     try {
       _currentToken = token;
       return parseStatements2();
     } finally {
       instrumentation.log();
     }
   }
   void set currentToken(Token currentToken2) {
     this._currentToken = currentToken2;
   }
 
   /**
    * Advance to the next token in the token stream.
    */
   void advance() {
     _currentToken = _currentToken.next;
   }
 
   /**
    * Append the character equivalent of the given scalar value to the given builder. Use the start
    * and end indices to report an error, and don't append anything to the builder, if the scalar
    * value is invalid.
+   *
    * @param builder the builder to which the scalar value is to be appended
    * @param escapeSequence the escape sequence that was parsed to produce the scalar value
    * @param scalarValue the value to be appended
    * @param startIndex the index of the first character representing the scalar value
    * @param endIndex the index of the last character representing the scalar value
    */
   void appendScalarValue(JavaStringBuilder builder, String escapeSequence, int scalarValue, int startIndex, int endIndex) {
     if (scalarValue < 0 || scalarValue > Character.MAX_CODE_POINT || (scalarValue >= 0xD800 && scalarValue <= 0xDFFF)) {
       reportError7(ParserErrorCode.INVALID_CODE_POINT, [escapeSequence]);
       return;
     }
     if (scalarValue < Character.MAX_VALUE) {
       builder.appendChar((scalarValue as int));
     } else {
       builder.append(Character.toChars(scalarValue));
     }
   }
 
   /**
    * Compute the content of a string with the given literal representation.
+   *
    * @param lexeme the literal representation of the string
    * @return the actual value of the string
    */
   String computeStringValue(String lexeme) {
     if (lexeme.startsWith("r\"\"\"") || lexeme.startsWith("r'''")) {
       if (lexeme.length > 4) {
         return lexeme.substring(4, lexeme.length - 3);
       }
     } else if (lexeme.startsWith("r\"") || lexeme.startsWith("r'")) {
       if (lexeme.length > 2) {
@@ skipping 15 matching lines @@
     JavaStringBuilder builder = new JavaStringBuilder();
     int index = start;
     while (index < end) {
       index = translateCharacter(builder, lexeme, index);
     }
     return builder.toString();
   }
 
   /**
    * Convert the given method declaration into the nearest valid top-level function declaration.
+   *
    * @param method the method to be converted
    * @return the function declaration that most closely captures the components of the given method
-   * declaration
+   *         declaration
    */
   FunctionDeclaration convertToFunctionDeclaration(MethodDeclaration method) => new FunctionDeclaration.full(method.documentationComment, method.metadata, method.externalKeyword, method.returnType, method.propertyKeyword, method.name, new FunctionExpression.full(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.
+   *
    * @return `true` if the current token could be the start of a compilation unit member
    */
   bool couldBeStartOfCompilationUnitMember() {
     if ((matches(Keyword.IMPORT) || matches(Keyword.EXPORT) || matches(Keyword.LIBRARY) || matches(Keyword.PART)) && !matches4(peek(), TokenType.PERIOD) && !matches4(peek(), TokenType.LT)) {
       return true;
     } else if (matches(Keyword.CLASS)) {
       return true;
     } else if (matches(Keyword.TYPEDEF) && !matches4(peek(), TokenType.PERIOD) && !matches4(peek(), TokenType.LT)) {
       return true;
     } else if (matches(Keyword.VOID) || ((matches(Keyword.GET) || matches(Keyword.SET)) && matchesIdentifier2(peek())) || (matches(Keyword.OPERATOR) && isOperator(peek()))) {
       return true;
     } else if (matchesIdentifier()) {
       if (matches4(peek(), TokenType.OPEN_PAREN)) {
         return true;
       }
       Token token = skipReturnType(_currentToken);
       if (token == null) {
         return false;
       }
       if (matches(Keyword.GET) || matches(Keyword.SET) || (matches(Keyword.OPERATOR) && isOperator(peek())) || matchesIdentifier()) {
         return true;
       }
     }
     return false;
   }
 
   /**
    * Create a synthetic identifier.
+   *
    * @return the synthetic identifier that was created
    */
   SimpleIdentifier createSyntheticIdentifier() => new SimpleIdentifier.full(createSyntheticToken2(TokenType.IDENTIFIER));
 
   /**
    * Create a synthetic string literal.
+   *
    * @return the synthetic string literal that was created
    */
   SimpleStringLiteral createSyntheticStringLiteral() => new SimpleStringLiteral.full(createSyntheticToken2(TokenType.STRING), "");
 
   /**
    * Create a synthetic token representing the given keyword.
+   *
    * @return the synthetic token that was created
    */
-  Token createSyntheticToken(Keyword keyword) => new KeywordToken_10(keyword, _currentToken.offset);
+  Token createSyntheticToken(Keyword keyword) => new KeywordToken_11(keyword, _currentToken.offset);
 
   /**
    * Create a synthetic token with the given type.
+   *
    * @return the synthetic token that was created
    */
   Token createSyntheticToken2(TokenType type) => new StringToken(type, "", _currentToken.offset);
 
   /**
    * Check that the given expression is assignable and report an error if it isn't.
+   *
    * <pre>
    * assignableExpression ::=
-   * primary (arguments* assignableSelector)+
-   * | 'super' assignableSelector
-   * | identifier
+   *     primary (arguments* assignableSelector)+
+   *   | 'super' assignableSelector
+   *   | identifier
+   *
    * assignableSelector ::=
-   * '\[' expression '\]'
-   * | '.' identifier
+   *     '[' expression ']'
+   *   | '.' identifier
    * </pre>
+   *
    * @param expression the expression being checked
    */
   void ensureAssignable(Expression expression) {
     if (expression != null && !expression.isAssignable) {
       reportError7(ParserErrorCode.ILLEGAL_ASSIGNMENT_TO_NON_ASSIGNABLE, []);
     }
   }
 
   /**
    * If the current token is a keyword matching the given string, return it after advancing to the
    * next token. Otherwise report an error and return the current token without advancing.
+   *
    * @param keyword the keyword that is expected
    * @return the token that matched the given type
    */
   Token expect(Keyword keyword) {
     if (matches(keyword)) {
       return andAdvance;
     }
     reportError7(ParserErrorCode.EXPECTED_TOKEN, [keyword.syntax]);
     return _currentToken;
   }
 
   /**
    * If the current token has the expected type, return it after advancing to the next token.
    * Otherwise report an error and return the current token without advancing.
+   *
    * @param type the type of token that is expected
    * @return the token that matched the given type
    */
   Token expect2(TokenType type) {
     if (matches5(type)) {
       return andAdvance;
     }
     if (identical(type, TokenType.SEMICOLON)) {
       reportError8(ParserErrorCode.EXPECTED_TOKEN, _currentToken.previous, [type.lexeme]);
     } else {
       reportError7(ParserErrorCode.EXPECTED_TOKEN, [type.lexeme]);
     }
     return _currentToken;
   }
 
   /**
    * Search the given list of ranges for a range that contains the given index. Return the range
    * that was found, or `null` if none of the ranges contain the index.
+   *
    * @param ranges the ranges to be searched
    * @param index the index contained in the returned range
    * @return the range that was found
    */
   List<int> findRange(List<List<int>> ranges, int index) {
     for (List<int> range in ranges) {
       if (range[0] <= index && index <= range[1]) {
         return range;
       } else if (index < range[0]) {
         return null;
       }
     }
     return null;
   }
 
   /**
    * Advance to the next token in the token stream, making it the new current token.
+   *
    * @return the token that was current before this method was invoked
    */
   Token get andAdvance {
     Token token = _currentToken;
     advance();
     return token;
   }
 
   /**
    * Return a list of the ranges of characters in the given comment string that should be treated as
    * code blocks.
+   *
    * @param comment the comment being processed
    * @return the ranges of characters that should be treated as code blocks
    */
   List<List<int>> getCodeBlockRanges(String comment) {
     List<List<int>> ranges = new List<List<int>>();
     int length = comment.length;
     int index = 0;
     if (comment.startsWith("/**") || comment.startsWith("///")) {
       index = 3;
     }
@@ skipping 22 matching lines @@
       } else {
         index = index + 1;
       }
     }
     return ranges;
   }
 
   /**
    * Return the end token associated with the given begin token, or `null` if either the given
    * token is not a begin token or it does not have an end token associated with it.
+   *
    * @param beginToken the token that is expected to have an end token associated with it
    * @return the end token associated with the begin token
    */
   Token getEndToken(Token beginToken) {
     if (beginToken is BeginToken) {
       return ((beginToken as BeginToken)).endToken;
     }
     return null;
   }
 
   /**
    * 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.
+   *
    * @return `true` if we can successfully parse the rest of a type alias if we first parse a
-   * return type.
+   *         return type.
    */
   bool hasReturnTypeInTypeAlias() {
     Token next = skipReturnType(_currentToken);
     if (next == null) {
       return false;
     }
     return matchesIdentifier2(next);
   }
 
   /**
    * Return `true` if the current token appears to be the beginning of a function declaration.
+   *
    * @return `true` if the current token appears to be the beginning of a function declaration
    */
   bool isFunctionDeclaration() {
     if (matches(Keyword.VOID)) {
       return true;
     }
     Token afterReturnType = skipTypeName(_currentToken);
     if (afterReturnType == null) {
       afterReturnType = _currentToken;
     }
     Token afterIdentifier = skipSimpleIdentifier(afterReturnType);
     if (afterIdentifier == null) {
       afterIdentifier = skipSimpleIdentifier(_currentToken);
     }
     if (afterIdentifier == null) {
       return false;
     }
     return isFunctionExpression(afterIdentifier);
   }
 
   /**
    * Return `true` if the given token appears to be the beginning of a function expression.
+   *
    * @param startToken the token that might be the start of a function expression
    * @return `true` if the given token appears to be the beginning of a function expression
    */
   bool isFunctionExpression(Token startToken) {
     Token afterParameters = skipFormalParameterList(startToken);
     if (afterParameters == null) {
       return false;
     }
     return matchesAny(afterParameters, [TokenType.OPEN_CURLY_BRACKET, TokenType.FUNCTION]);
   }
 
   /**
    * Return `true` if the given character is a valid hexadecimal digit.
+   *
    * @param character the character being tested
    * @return `true` if the character is a valid hexadecimal digit
    */
   bool isHexDigit(int character) => (0x30 <= character && character <= 0x39) || (0x41 <= character && character <= 0x46) || (0x61 <= character && character <= 0x66);
 
   /**
    * Return `true` if the current token is the first token in an initialized variable
    * declaration rather than an expression. This method assumes that we have already skipped past
    * any metadata that might be associated with the declaration.
+   *
    * <pre>
    * initializedVariableDeclaration ::=
-   * declaredIdentifier ('=' expression)? (',' initializedIdentifier)
+   *     declaredIdentifier ('=' expression)? (',' initializedIdentifier)*
+   *
    * declaredIdentifier ::=
-   * metadata finalConstVarOrType identifier
+   *     metadata finalConstVarOrType identifier
+   *
    * finalConstVarOrType ::=
-   * 'final' type?
-   * | 'const' type?
-   * | 'var'
-   * | type
+   *     'final' type?
+   *   | 'const' type?
+   *   | 'var'
+   *   | type
+   *
    * type ::=
-   * qualified typeArguments?
+   *     qualified typeArguments?
+   *
    * initializedIdentifier ::=
-   * identifier ('=' expression)?
+   *     identifier ('=' expression)?
    * </pre>
+   *
    * @return `true` if the current token is the first token in an initialized variable
-   * declaration
+   *         declaration
    */
   bool isInitializedVariableDeclaration() {
     if (matches(Keyword.FINAL) || matches(Keyword.VAR)) {
       return true;
     }
     if (matches(Keyword.CONST)) {
       return !matchesAny(peek(), [TokenType.LT, TokenType.OPEN_CURLY_BRACKET, TokenType.OPEN_SQUARE_BRACKET, TokenType.INDEX]);
     }
     Token token = skipTypeName(_currentToken);
     if (token == null) {
       return false;
     }
     token = skipSimpleIdentifier(token);
     if (token == null) {
       return false;
     }
     TokenType type = token.type;
     return identical(type, TokenType.EQ) || identical(type, TokenType.COMMA) || identical(type, TokenType.SEMICOLON) || matches3(token, Keyword.IN);
   }
 
   /**
    * Given that we have just found bracketed text within a comment, look to see whether that text is
    * (a) followed by a parenthesized link address, (b) followed by a colon, or (c) followed by
    * optional whitespace and another square bracket.
    *
    * This method uses the syntax described by the <a
    * href="http://daringfireball.net/projects/markdown/syntax">markdown</a> project.
+   *
    * @param comment the comment text in which the bracketed text was found
    * @param rightIndex the index of the right bracket
    * @return `true` if the bracketed text is followed by a link address
    */
   bool isLinkText(String comment, int rightIndex) {
     int length = comment.length;
     int index = rightIndex + 1;
     if (index >= length) {
       return false;
     }
     int nextChar = comment.codeUnitAt(index);
     if (nextChar == 0x28 || nextChar == 0x3A) {
       return true;
     }
     while (Character.isWhitespace(nextChar)) {
       index = index + 1;
       if (index >= length) {
         return false;
       }
       nextChar = comment.codeUnitAt(index);
     }
     return nextChar == 0x5B;
   }
 
   /**
    * Return `true` if the given token appears to be the beginning of an operator declaration.
+   *
    * @param startToken the token that might be the start of an operator declaration
    * @return `true` if the given token appears to be the beginning of an operator declaration
    */
   bool isOperator(Token startToken) {
     if (startToken.isOperator) {
       Token token = startToken.next;
       while (token.isOperator) {
         token = token.next;
       }
       return matches4(token, TokenType.OPEN_PAREN);
     }
     return false;
   }
 
   /**
    * Return `true` if the current token appears to be the beginning of a switch member.
+   *
    * @return `true` if the current token appears to be the beginning of a switch member
    */
   bool isSwitchMember() {
     Token token = _currentToken;
     while (matches4(token, TokenType.IDENTIFIER) && matches4(token.next, TokenType.COLON)) {
       token = token.next.next;
     }
     if (identical(token.type, TokenType.KEYWORD)) {
       Keyword keyword = ((token as KeywordToken)).keyword;
       return identical(keyword, Keyword.CASE) || identical(keyword, Keyword.DEFAULT);
     }
     return false;
   }
 
   /**
    * Compare the given tokens to find the token that appears first in the source being parsed. That
    * is, return the left-most of all of the tokens. The arguments are allowed to be `null`.
    * Return the token with the smallest offset, or `null` if there are no arguments or if all
    * of the arguments are `null`.
+   *
    * @param tokens the tokens being compared
    * @return the token with the smallest offset
    */
   Token lexicallyFirst(List<Token> tokens) {
     Token first = null;
     int firstOffset = 2147483647;
     for (Token token in tokens) {
       if (token != null) {
         int offset = token.offset;
         if (offset < firstOffset) {
           first = token;
           firstOffset = offset;
         }
       }
     }
     return first;
   }
 
   /**
    * Return `true` if the current token matches the given keyword.
+   *
    * @param keyword the keyword that can optionally appear in the current location
    * @return `true` if the current token matches the given keyword
    */
   bool matches(Keyword keyword) => matches3(_currentToken, keyword);
 
   /**
    * Return `true` if the current token matches the given identifier.
+   *
    * @param identifier the identifier that can optionally appear in the current location
    * @return `true` if the current token matches the given identifier
    */
   bool matches2(String identifier) => identical(_currentToken.type, TokenType.IDENTIFIER) && _currentToken.lexeme == identifier;
 
   /**
    * Return `true` if the given token matches the given keyword.
+   *
    * @param token the token being tested
    * @param keyword the keyword that is being tested for
    * @return `true` if the given token matches the given keyword
    */
   bool matches3(Token token, Keyword keyword2) => identical(token.type, TokenType.KEYWORD) && identical(((token as KeywordToken)).keyword, keyword2);
 
   /**
    * Return `true` if the given token has the given type.
+   *
    * @param token the token being tested
    * @param type the type of token that is being tested for
    * @return `true` if the given token has the given type
    */
   bool matches4(Token token, TokenType type2) => identical(token.type, type2);
 
   /**
    * Return `true` if the current token has the given type. Note that this method, unlike
    * other variants, will modify the token stream if possible to match a wider range of tokens. In
    * particular, if we are attempting to match a '>' and the next token is either a '>>' or '>>>',
    * the token stream will be re-written and `true` will be returned.
+   *
    * @param type the type of token that can optionally appear in the current location
    * @return `true` if the current token has the given type
    */
   bool matches5(TokenType type2) {
     TokenType currentType = _currentToken.type;
     if (currentType != type2) {
       if (identical(type2, TokenType.GT)) {
         if (identical(currentType, TokenType.GT_GT)) {
           int offset = _currentToken.offset;
           Token first = new Token(TokenType.GT, offset);
@@ skipping 25 matching lines @@
           return true;
         }
       }
       return false;
     }
     return true;
   }
 
   /**
    * Return `true` if the given token has any one of the given types.
+   *
    * @param token the token being tested
    * @param types the types of token that are being tested for
    * @return `true` if the given token has any of the given types
    */
   bool matchesAny(Token token, List<TokenType> types) {
     TokenType actualType = token.type;
     for (TokenType type in types) {
       if (identical(actualType, type)) {
         return true;
       }
     }
     return false;
   }
 
   /**
    * Return `true` if the current token is a valid identifier. Valid identifiers include
    * built-in identifiers (pseudo-keywords).
+   *
    * @return `true` if the current token is a valid identifier
    */
   bool matchesIdentifier() => matchesIdentifier2(_currentToken);
 
   /**
    * Return `true` if the given token is a valid identifier. Valid identifiers include
    * built-in identifiers (pseudo-keywords).
+   *
    * @return `true` if the given token is a valid identifier
    */
   bool matchesIdentifier2(Token token) => matches4(token, TokenType.IDENTIFIER) || (matches4(token, TokenType.KEYWORD) && ((token as KeywordToken)).keyword.isPseudoKeyword);
 
   /**
-   * If the current token has the given type, then advance to the next token and return `true`. Otherwise, return `false` without advancing.
+   * If the current token has the given type, then advance to the next token and return `true`
+   * . Otherwise, return `false` without advancing.
+   *
    * @param type the type of token that can optionally appear in the current location
    * @return `true` if the current token has the given type
    */
   bool optional(TokenType type) {
     if (matches5(type)) {
       advance();
       return true;
     }
     return false;
   }
 
   /**
    * Parse an additive expression.
+   *
    * <pre>
    * additiveExpression ::=
-   * multiplicativeExpression (additiveOperator multiplicativeExpression)
-   * | 'super' (additiveOperator multiplicativeExpression)+
+   *     multiplicativeExpression (additiveOperator multiplicativeExpression)*
+   *   | 'super' (additiveOperator multiplicativeExpression)+
    * </pre>
+   *
    * @return the additive expression that was parsed
    */
   Expression parseAdditiveExpression() {
     Expression expression;
     if (matches(Keyword.SUPER) && _currentToken.next.type.isAdditiveOperator) {
       expression = new SuperExpression.full(andAdvance);
     } else {
       expression = parseMultiplicativeExpression();
     }
     while (_currentToken.type.isAdditiveOperator) {
       Token operator = andAdvance;
       expression = new BinaryExpression.full(expression, operator, parseMultiplicativeExpression());
     }
     return expression;
   }
 
   /**
    * Parse an annotation.
+   *
    * <pre>
    * annotation ::=
-   * '@' qualified ('.' identifier)? arguments?
+   *     '@' qualified ('.' identifier)? arguments?
    * </pre>
+   *
    * @return the annotation that was parsed
    */
   Annotation parseAnnotation() {
     Token atSign = expect2(TokenType.AT);
     Identifier name = parsePrefixedIdentifier();
     Token period = null;
     SimpleIdentifier constructorName = null;
     if (matches5(TokenType.PERIOD)) {
       period = andAdvance;
       constructorName = parseSimpleIdentifier();
     }
     ArgumentList arguments = null;
     if (matches5(TokenType.OPEN_PAREN)) {
       arguments = parseArgumentList();
     }
     return new Annotation.full(atSign, name, period, constructorName, arguments);
   }
 
   /**
    * Parse an argument.
+   *
    * <pre>
    * argument ::=
-   * namedArgument
-   * | expression
+   *     namedArgument
+   *   | expression
+   *
    * namedArgument ::=
-   * label expression
+   *     label expression
    * </pre>
+   *
    * @return the argument that was parsed
    */
   Expression parseArgument() {
     if (matchesIdentifier() && matches4(peek(), TokenType.COLON)) {
       SimpleIdentifier label = new SimpleIdentifier.full(andAdvance);
       Label name = new Label.full(label, andAdvance);
       return new NamedExpression.full(name, parseExpression2());
     } else {
       return parseExpression2();
     }
   }
 
   /**
    * Parse an argument definition test.
+   *
    * <pre>
    * argumentDefinitionTest ::=
-   * '?' identifier
+   *     '?' identifier
    * </pre>
+   *
    * @return the argument definition test that was parsed
    */
   ArgumentDefinitionTest parseArgumentDefinitionTest() {
     Token question = expect2(TokenType.QUESTION);
     SimpleIdentifier identifier = parseSimpleIdentifier();
     return new ArgumentDefinitionTest.full(question, identifier);
   }
 
   /**
    * Parse a list of arguments.
+   *
    * <pre>
    * arguments ::=
-   * '(' argumentList? ')'
+   *     '(' argumentList? ')'
+   *
    * argumentList ::=
-   * namedArgument (',' namedArgument)
-   * | expressionList (',' namedArgument)
+   *     namedArgument (',' namedArgument)*
+   *   | expressionList (',' namedArgument)*
    * </pre>
+   *
    * @return the argument list that was parsed
    */
   ArgumentList parseArgumentList() {
     Token leftParenthesis = expect2(TokenType.OPEN_PAREN);
     List<Expression> arguments = new List<Expression>();
     if (matches5(TokenType.CLOSE_PAREN)) {
       return new ArgumentList.full(leftParenthesis, arguments, andAdvance);
     }
     Expression argument = parseArgument();
     arguments.add(argument);
@@ skipping 10 matching lines @@
       } else if (argument is NamedExpression) {
         foundNamedArgument = true;
       }
     }
     Token rightParenthesis = expect2(TokenType.CLOSE_PAREN);
     return new ArgumentList.full(leftParenthesis, arguments, rightParenthesis);
   }
 
   /**
    * Parse an assert statement.
+   *
    * <pre>
    * assertStatement ::=
-   * 'assert' '(' conditionalExpression ')' ';'
+   *     'assert' '(' conditionalExpression ')' ';'
    * </pre>
+   *
    * @return the assert statement
    */
   AssertStatement parseAssertStatement() {
     Token keyword = expect(Keyword.ASSERT);
     Token leftParen = expect2(TokenType.OPEN_PAREN);
     Expression expression = parseConditionalExpression();
     Token rightParen = expect2(TokenType.CLOSE_PAREN);
     Token semicolon = expect2(TokenType.SEMICOLON);
     return new AssertStatement.full(keyword, leftParen, expression, rightParen, semicolon);
   }
 
   /**
    * Parse an assignable expression.
+   *
    * <pre>
    * assignableExpression ::=
-   * primary (arguments* assignableSelector)+
-   * | 'super' assignableSelector
-   * | identifier
+   *     primary (arguments* assignableSelector)+
+   *   | 'super' assignableSelector
+   *   | identifier
    * </pre>
+   *
    * @param primaryAllowed `true` if the expression is allowed to be a primary without any
-   * assignable selector
+   *          assignable selector
    * @return the assignable expression that was parsed
    */
   Expression parseAssignableExpression(bool primaryAllowed) {
     if (matches(Keyword.SUPER)) {
       return parseAssignableSelector(new SuperExpression.full(andAdvance), false);
     }
     Expression expression = parsePrimaryExpression();
     bool isOptional = primaryAllowed || expression is SimpleIdentifier;
     while (true) {
       while (matches5(TokenType.OPEN_PAREN)) {
@@ skipping 21 matching lines @@
         }
         return expression;
       }
       expression = selectorExpression;
       isOptional = true;
     }
   }
 
   /**
    * Parse an assignable selector.
+   *
    * <pre>
    * assignableSelector ::=
-   * '\[' expression '\]'
-   * | '.' identifier
+   *     '[' expression ']'
+   *   | '.' identifier
    * </pre>
+   *
    * @param prefix the expression preceding the selector
    * @param optional `true` if the selector is optional
    * @return the assignable selector that was parsed
    */
   Expression parseAssignableSelector(Expression prefix, bool optional) {
     if (matches5(TokenType.OPEN_SQUARE_BRACKET)) {
       Token leftBracket = andAdvance;
       Expression index = parseExpression2();
       Token rightBracket = expect2(TokenType.CLOSE_SQUARE_BRACKET);
       return new IndexExpression.forTarget_full(prefix, leftBracket, index, rightBracket);
     } else if (matches5(TokenType.PERIOD)) {
       Token period = andAdvance;
       return new PropertyAccess.full(prefix, period, parseSimpleIdentifier());
     } else {
       if (!optional) {
         reportError7(ParserErrorCode.MISSING_ASSIGNABLE_SELECTOR, []);
       }
       return prefix;
     }
   }
 
   /**
    * Parse a bitwise and expression.
+   *
    * <pre>
    * bitwiseAndExpression ::=
-   * equalityExpression ('&' equalityExpression)
-   * | 'super' ('&' equalityExpression)+
+   *     equalityExpression ('&' equalityExpression)*
+   *   | 'super' ('&' equalityExpression)+
    * </pre>
+   *
    * @return the bitwise and expression that was parsed
    */
   Expression parseBitwiseAndExpression() {
     Expression expression;
     if (matches(Keyword.SUPER) && matches4(peek(), TokenType.AMPERSAND)) {
       expression = new SuperExpression.full(andAdvance);
     } else {
       expression = parseEqualityExpression();
     }
     while (matches5(TokenType.AMPERSAND)) {
       Token operator = andAdvance;
       expression = new BinaryExpression.full(expression, operator, parseEqualityExpression());
     }
     return expression;
   }
 
   /**
    * Parse a bitwise or expression.
+   *
    * <pre>
    * bitwiseOrExpression ::=
-   * bitwiseXorExpression ('|' bitwiseXorExpression)
-   * | 'super' ('|' bitwiseXorExpression)+
+   *     bitwiseXorExpression ('|' bitwiseXorExpression)*
+   *   | 'super' ('|' bitwiseXorExpression)+
    * </pre>
+   *
    * @return the bitwise or expression that was parsed
    */
   Expression parseBitwiseOrExpression() {
     Expression expression;
     if (matches(Keyword.SUPER) && matches4(peek(), TokenType.BAR)) {
       expression = new SuperExpression.full(andAdvance);
     } else {
       expression = parseBitwiseXorExpression();
     }
     while (matches5(TokenType.BAR)) {
       Token operator = andAdvance;
       expression = new BinaryExpression.full(expression, operator, parseBitwiseXorExpression());
     }
     return expression;
   }
 
   /**
    * Parse a bitwise exclusive-or expression.
+   *
    * <pre>
    * bitwiseXorExpression ::=
-   * bitwiseAndExpression ('^' bitwiseAndExpression)
-   * | 'super' ('^' bitwiseAndExpression)+
+   *     bitwiseAndExpression ('^' bitwiseAndExpression)*
+   *   | 'super' ('^' bitwiseAndExpression)+
    * </pre>
+   *
    * @return the bitwise exclusive-or expression that was parsed
    */
   Expression parseBitwiseXorExpression() {
     Expression expression;
     if (matches(Keyword.SUPER) && matches4(peek(), TokenType.CARET)) {
       expression = new SuperExpression.full(andAdvance);
     } else {
       expression = parseBitwiseAndExpression();
     }
     while (matches5(TokenType.CARET)) {
       Token operator = andAdvance;
       expression = new BinaryExpression.full(expression, operator, parseBitwiseAndExpression());
     }
     return expression;
   }
 
   /**
    * Parse a block.
+   *
    * <pre>
    * block ::=
-   * '{' statements '}'
+   *     '{' statements '}'
    * </pre>
+   *
    * @return the block that was parsed
    */
   Block parseBlock() {
     Token leftBracket = expect2(TokenType.OPEN_CURLY_BRACKET);
     List<Statement> statements = new List<Statement>();
     Token statementStart = _currentToken;
     while (!matches5(TokenType.EOF) && !matches5(TokenType.CLOSE_CURLY_BRACKET)) {
       Statement statement = parseStatement2();
       if (statement != null) {
         statements.add(statement);
       }
       if (identical(_currentToken, statementStart)) {
         reportError8(ParserErrorCode.UNEXPECTED_TOKEN, _currentToken, [_currentToken.lexeme]);
         advance();
       }
       statementStart = _currentToken;
     }
     Token rightBracket = expect2(TokenType.CLOSE_CURLY_BRACKET);
     return new Block.full(leftBracket, statements, rightBracket);
   }
 
   /**
    * Parse a break statement.
+   *
    * <pre>
    * breakStatement ::=
-   * 'break' identifier? ';'
+   *     'break' identifier? ';'
    * </pre>
+   *
    * @return the break statement that was parsed
    */
   Statement parseBreakStatement() {
     Token breakKeyword = expect(Keyword.BREAK);
     SimpleIdentifier label = null;
     if (matchesIdentifier()) {
       label = parseSimpleIdentifier();
     }
     if (!_inLoop && !_inSwitch && label == null) {
       reportError8(ParserErrorCode.BREAK_OUTSIDE_OF_LOOP, breakKeyword, []);
     }
     Token semicolon = expect2(TokenType.SEMICOLON);
     return new BreakStatement.full(breakKeyword, label, semicolon);
   }
 
   /**
    * Parse a cascade section.
+   *
    * <pre>
    * cascadeSection ::=
-   * '..' (cascadeSelector arguments*) (assignableSelector arguments*)* cascadeAssignment?
+   *     '..' (cascadeSelector arguments*) (assignableSelector arguments*)* cascadeAssignment?
+   *
    * cascadeSelector ::=
-   * '\[' expression '\]'
-   * | identifier
+   *     '[' expression ']'
+   *   | identifier
+   *
    * cascadeAssignment ::=
-   * assignmentOperator expressionWithoutCascade
+   *     assignmentOperator expressionWithoutCascade
    * </pre>
+   *
    * @return the expression representing the cascaded method invocation
    */
   Expression parseCascadeSection() {
     Token period = expect2(TokenType.PERIOD_PERIOD);
     Expression expression = null;
     SimpleIdentifier functionName = null;
     if (matchesIdentifier()) {
       functionName = parseSimpleIdentifier();
     } else if (identical(_currentToken.type, TokenType.OPEN_SQUARE_BRACKET)) {
       Token leftBracket = andAdvance;
@@ skipping 36 matching lines @@
     if (_currentToken.type.isAssignmentOperator) {
       Token operator = andAdvance;
       ensureAssignable(expression);
       expression = new AssignmentExpression.full(expression, operator, parseExpressionWithoutCascade());
     }
     return expression;
   }
 
   /**
    * Parse a class declaration.
+   *
    * <pre>
    * classDeclaration ::=
-   * metadata 'abstract'? 'class' name typeParameterList? (extendsClause withClause?)? implementsClause? '{' classMembers '}'
+   *     metadata 'abstract'? 'class' name typeParameterList? (extendsClause withClause?)? implementsClause? '{' classMembers '}'
    * </pre>
+   *
    * @param commentAndMetadata the metadata to be associated with the member
    * @param abstractKeyword the token for the keyword 'abstract', or `null` if the keyword was
-   * not given
+   *          not given
    * @return the class declaration that was parsed
    */
   ClassDeclaration parseClassDeclaration(CommentAndMetadata commentAndMetadata, Token abstractKeyword) {
     Token keyword = expect(Keyword.CLASS);
     SimpleIdentifier name = parseSimpleIdentifier();
     String className = name.name;
     TypeParameterList typeParameters = null;
     if (matches5(TokenType.LT)) {
       typeParameters = parseTypeParameterList();
     }
@@ skipping 52 matching lines @@
     } else {
       leftBracket = createSyntheticToken2(TokenType.OPEN_CURLY_BRACKET);
       rightBracket = createSyntheticToken2(TokenType.CLOSE_CURLY_BRACKET);
       reportError7(ParserErrorCode.MISSING_CLASS_BODY, []);
     }
     return new ClassDeclaration.full(commentAndMetadata.comment, commentAndMetadata.metadata, abstractKeyword, keyword, name, typeParameters, extendsClause, withClause, implementsClause, leftBracket, members, rightBracket);
   }
 
   /**
    * Parse a class member.
+   *
    * <pre>
    * classMemberDefinition ::=
-   * declaration ';'
-   * | methodSignature functionBody
+   *     declaration ';'
+   *   | methodSignature functionBody
    * </pre>
+   *
    * @param className the name of the class containing the member being parsed
    * @return the class member that was parsed, or `null` if what was found was not a valid
-   * class member
+   *         class member
    */
   ClassMember parseClassMember(String className) {
     CommentAndMetadata commentAndMetadata = parseCommentAndMetadata();
     Modifiers modifiers = parseModifiers();
     if (matches(Keyword.VOID)) {
       TypeName returnType = parseReturnType();
       if (matches(Keyword.GET) && matchesIdentifier2(peek())) {
         validateModifiersForGetterOrSetterOrMethod(modifiers);
         return parseGetter(commentAndMetadata, modifiers.externalKeyword, modifiers.staticKeyword, returnType);
       } else if (matches(Keyword.SET) && matchesIdentifier2(peek())) {
@@ skipping 81 matching lines @@
       }
       validateModifiersForGetterOrSetterOrMethod(modifiers);
       validateFormalParameterList(parameters);
       return parseMethodDeclaration2(commentAndMetadata, modifiers.externalKeyword, modifiers.staticKeyword, type, methodName, parameters);
     }
     return parseInitializedIdentifierList(commentAndMetadata, modifiers.staticKeyword, validateModifiersForField(modifiers), type);
   }
 
   /**
    * Parse a list of class members.
+   *
    * <pre>
    * classMembers ::=
-   * (metadata memberDefinition)
+   *     (metadata memberDefinition)*
    * </pre>
+   *
    * @param className the name of the class whose members are being parsed
    * @param closingBracket the closing bracket for the class, or `null` if the closing bracket
-   * is missing
+   *          is missing
    * @return the list of class members that were parsed
    */
   List<ClassMember> parseClassMembers(String className, Token closingBracket) {
     List<ClassMember> members = new List<ClassMember>();
     Token memberStart = _currentToken;
     while (!matches5(TokenType.EOF) && !matches5(TokenType.CLOSE_CURLY_BRACKET) && (closingBracket != null || (!matches(Keyword.CLASS) && !matches(Keyword.TYPEDEF)))) {
       if (matches5(TokenType.SEMICOLON)) {
         reportError8(ParserErrorCode.UNEXPECTED_TOKEN, _currentToken, [_currentToken.lexeme]);
         advance();
       } else {
         ClassMember member = parseClassMember(className);
         if (member != null) {
           members.add(member);
         }
       }
       if (identical(_currentToken, memberStart)) {
         reportError8(ParserErrorCode.UNEXPECTED_TOKEN, _currentToken, [_currentToken.lexeme]);
         advance();
       }
       memberStart = _currentToken;
     }
     return members;
   }
 
   /**
    * Parse a class type alias.
+   *
    * <pre>
    * classTypeAlias ::=
-   * identifier typeParameters? '=' 'abstract'? mixinApplication
+   *     identifier typeParameters? '=' 'abstract'? mixinApplication
+   *
    * mixinApplication ::=
-   * type withClause implementsClause? ';'
+   *     type withClause implementsClause? ';'
    * </pre>
+   *
    * @param commentAndMetadata the metadata to be associated with the member
    * @param keyword the token representing the 'typedef' keyword
    * @return the class type alias that was parsed
    */
   ClassTypeAlias parseClassTypeAlias(CommentAndMetadata commentAndMetadata, Token keyword) {
     SimpleIdentifier className = parseSimpleIdentifier();
     TypeParameterList typeParameters = null;
     if (matches5(TokenType.LT)) {
       typeParameters = parseTypeParameterList();
     }
@@ skipping 23 matching lines @@
       } else {
         reportError8(ParserErrorCode.EXPECTED_TOKEN, _currentToken.previous, [TokenType.SEMICOLON.lexeme]);
       }
       semicolon = createSyntheticToken2(TokenType.SEMICOLON);
     }
     return new ClassTypeAlias.full(commentAndMetadata.comment, commentAndMetadata.metadata, keyword, className, typeParameters, equals, abstractKeyword, superclass, withClause, implementsClause, semicolon);
   }
 
   /**
    * Parse a list of combinators in a directive.
+   *
    * <pre>
    * combinator ::=
-   * 'show' identifier (',' identifier)
-   * | 'hide' identifier (',' identifier)
+   *     'show' identifier (',' identifier)*
+   *   | 'hide' identifier (',' identifier)*
    * </pre>
+   *
    * @return the combinators that were parsed
    */
   List<Combinator> parseCombinators() {
     List<Combinator> combinators = new List<Combinator>();
     while (matches2(_SHOW) || matches2(_HIDE)) {
       Token keyword = expect2(TokenType.IDENTIFIER);
       if (keyword.lexeme == _SHOW) {
         List<SimpleIdentifier> shownNames = parseIdentifierList();
         combinators.add(new ShowCombinator.full(keyword, shownNames));
       } else {
         List<SimpleIdentifier> hiddenNames = parseIdentifierList();
         combinators.add(new HideCombinator.full(keyword, hiddenNames));
       }
     }
     return combinators;
   }
 
   /**
    * Parse the documentation comment and metadata preceeding a declaration. This method allows any
    * number of documentation comments to occur before, after or between the metadata, but only
    * returns the last (right-most) documentation comment that is found.
+   *
    * <pre>
    * metadata ::=
-   * annotation
+   *     annotation*
    * </pre>
+   *
    * @return the documentation comment and metadata that were parsed
    */
   CommentAndMetadata parseCommentAndMetadata() {
     Comment comment = parseDocumentationComment();
     List<Annotation> metadata = new List<Annotation>();
     while (matches5(TokenType.AT)) {
       metadata.add(parseAnnotation());
       Comment optionalComment = parseDocumentationComment();
       if (optionalComment != null) {
         comment = optionalComment;
       }
     }
     return new CommentAndMetadata(comment, metadata);
   }
 
   /**
    * Parse a comment reference from the source between square brackets.
+   *
    * <pre>
    * commentReference ::=
-   * 'new'? prefixedIdentifier
+   *     'new'? prefixedIdentifier
    * </pre>
+   *
    * @param referenceSource the source occurring between the square brackets within a documentation
-   * comment
+   *          comment
    * @param sourceOffset the offset of the first character of the reference source
    * @return the comment reference that was parsed, or `null` if no reference could be found
    */
   CommentReference parseCommentReference(String referenceSource, int sourceOffset) {
     if (referenceSource.length == 0) {
       return null;
     }
     try {
       List<bool> errorFound = [false];
-      AnalysisErrorListener listener = new AnalysisErrorListener_11(errorFound);
+      AnalysisErrorListener listener = new AnalysisErrorListener_12(errorFound);
       StringScanner scanner = new StringScanner(null, referenceSource, listener);
       scanner.setSourceStart(1, 1, sourceOffset);
       Token firstToken = scanner.tokenize();
       if (errorFound[0]) {
         return null;
       }
       Token newKeyword = null;
       if (matches3(firstToken, Keyword.NEW)) {
         newKeyword = firstToken;
         firstToken = firstToken.next;
@@ skipping 17 matching lines @@
       } else if (matches3(firstToken, Keyword.THIS) || matches3(firstToken, Keyword.NULL) || matches3(firstToken, Keyword.TRUE) || matches3(firstToken, Keyword.FALSE)) {
         return null;
       }
     } catch (exception) {
     }
     return null;
   }
 
   /**
    * Parse all of the comment references occurring in the given array of documentation comments.
+   *
    * <pre>
    * commentReference ::=
-   * '\[' 'new'? qualified '\]' libraryReference?
+   *     '[' 'new'? qualified ']' libraryReference?
+   *
    * libraryReference ::=
-   * '(' stringLiteral ')'
+   *      '(' stringLiteral ')'
    * </pre>
+   *
    * @param tokens the comment tokens representing the documentation comments to be parsed
    * @return the comment references that were parsed
    */
   List<CommentReference> parseCommentReferences(List<Token> tokens) {
     List<CommentReference> references = new List<CommentReference>();
     for (Token token in tokens) {
       String comment = token.lexeme;
       int length = comment.length;
       List<List<int>> codeBlockRanges = getCodeBlockRanges(comment);
       int leftIndex = comment.indexOf('[');
@@ skipping 21 matching lines @@
         }
       }
     }
     return references;
   }
 
   /**
    * Parse a compilation unit.
    *
    * Specified:
+   *
    * <pre>
    * compilationUnit ::=
-   * scriptTag? directive* topLevelDeclaration
+   *     scriptTag? directive* topLevelDeclaration*
    * </pre>
    * Actual:
+   *
    * <pre>
    * compilationUnit ::=
-   * scriptTag? topLevelElement
+   *     scriptTag? topLevelElement*
+   *
    * topLevelElement ::=
-   * directive
-   * | topLevelDeclaration
+   *     directive
+   *   | topLevelDeclaration
    * </pre>
+   *
    * @return the compilation unit that was parsed
    */
   CompilationUnit parseCompilationUnit2() {
     Token firstToken = _currentToken;
     ScriptTag scriptTag = null;
     if (matches5(TokenType.SCRIPT_TAG)) {
       scriptTag = new ScriptTag.full(andAdvance);
     }
     bool libraryDirectiveFound = false;
     bool partOfDirectiveFound = false;
@@ skipping 59 matching lines @@
           advance();
         }
       }
       memberStart = _currentToken;
     }
     return new CompilationUnit.full(firstToken, scriptTag, directives, declarations, _currentToken);
   }
 
   /**
    * Parse a compilation unit member.
+   *
    * <pre>
    * compilationUnitMember ::=
-   * classDefinition
-   * | functionTypeAlias
-   * | external functionSignature
-   * | external getterSignature
-   * | external setterSignature
-   * | functionSignature functionBody
-   * | returnType? getOrSet identifier formalParameterList functionBody
-   * | (final | const) type? staticFinalDeclarationList ';'
-   * | variableDeclaration ';'
+   *     classDefinition
+   *   | functionTypeAlias
+   *   | external functionSignature
+   *   | external getterSignature
+   *   | external setterSignature
+   *   | functionSignature functionBody
+   *   | returnType? getOrSet identifier formalParameterList functionBody
+   *   | (final | const) type? staticFinalDeclarationList ';'
+   *   | variableDeclaration ';'
    * </pre>
+   *
    * @param commentAndMetadata the metadata to be associated with the member
    * @return the compilation unit member that was parsed, or `null` if what was parsed could
-   * not be represented as a compilation unit member
+   *         not be represented as a compilation unit member
    */
   CompilationUnitMember parseCompilationUnitMember(CommentAndMetadata commentAndMetadata) {
     Modifiers modifiers = parseModifiers();
     if (matches(Keyword.CLASS)) {
       return parseClassDeclaration(commentAndMetadata, validateModifiersForClass(modifiers));
     } else if (matches(Keyword.TYPEDEF) && !matches4(peek(), TokenType.PERIOD) && !matches4(peek(), TokenType.LT)) {
       validateModifiersForTypedef(modifiers);
       return parseTypeAlias(commentAndMetadata);
     }
     if (matches(Keyword.VOID)) {
@@ skipping 48 matching lines @@
     }
     if (matchesAny(peek(), [TokenType.OPEN_PAREN, TokenType.FUNCTION, TokenType.OPEN_CURLY_BRACKET])) {
       validateModifiersForTopLevelFunction(modifiers);
       return parseFunctionDeclaration(commentAndMetadata, modifiers.externalKeyword, returnType);
     }
     return new TopLevelVariableDeclaration.full(commentAndMetadata.comment, commentAndMetadata.metadata, parseVariableDeclarationList2(null, validateModifiersForTopLevelVariable(modifiers), returnType), expect2(TokenType.SEMICOLON));
   }
 
   /**
    * Parse a conditional expression.
+   *
    * <pre>
    * conditionalExpression ::=
-   * logicalOrExpression ('?' expressionWithoutCascade ':' expressionWithoutCascade)?
+   *     logicalOrExpression ('?' expressionWithoutCascade ':' expressionWithoutCascade)?
    * </pre>
+   *
    * @return the conditional expression that was parsed
    */
   Expression parseConditionalExpression() {
     Expression condition = parseLogicalOrExpression();
     if (!matches5(TokenType.QUESTION)) {
       return condition;
     }
     Token question = andAdvance;
     Expression thenExpression = parseExpressionWithoutCascade();
     Token colon = expect2(TokenType.COLON);
     Expression elseExpression = parseExpressionWithoutCascade();
     return new ConditionalExpression.full(condition, question, thenExpression, colon, elseExpression);
   }
 
   /**
    * Parse a const expression.
+   *
    * <pre>
    * constExpression ::=
-   * instanceCreationExpression
-   * | listLiteral
-   * | mapLiteral
+   *     instanceCreationExpression
+   *   | listLiteral
+   *   | mapLiteral
    * </pre>
+   *
    * @return the const expression that was parsed
    */
   Expression parseConstExpression() {
     Token keyword = expect(Keyword.CONST);
     if (matches5(TokenType.OPEN_SQUARE_BRACKET) || matches5(TokenType.INDEX)) {
       return parseListLiteral(keyword, null);
     } else if (matches5(TokenType.OPEN_CURLY_BRACKET)) {
       return parseMapLiteral(keyword, null);
     } else if (matches5(TokenType.LT)) {
       return parseListOrMapLiteral(keyword);
@@ skipping 45 matching lines @@
         } else if (!bodyAllowed) {
           reportError(ParserErrorCode.EXTERNAL_CONSTRUCTOR_WITH_BODY, body, []);
         }
       }
     }
     return new ConstructorDeclaration.full(commentAndMetadata.comment, commentAndMetadata.metadata, externalKeyword, constKeyword, factoryKeyword, returnType, period, name, parameters, separator, initializers, redirectedConstructor, body);
   }
 
   /**
    * Parse a field initializer within a constructor.
+   *
    * <pre>
    * fieldInitializer:
-   * ('this' '.')? identifier '=' conditionalExpression cascadeSection
+   *     ('this' '.')? identifier '=' conditionalExpression cascadeSection*
    * </pre>
+   *
    * @return the field initializer that was parsed
    */
   ConstructorFieldInitializer parseConstructorFieldInitializer() {
     Token keyword = null;
     Token period = null;
     if (matches(Keyword.THIS)) {
       keyword = andAdvance;
       period = expect2(TokenType.PERIOD);
     }
     SimpleIdentifier fieldName = parseSimpleIdentifier();
     Token equals = expect2(TokenType.EQ);
     Expression expression = parseConditionalExpression();
     TokenType tokenType = _currentToken.type;
     if (identical(tokenType, TokenType.PERIOD_PERIOD)) {
       List<Expression> cascadeSections = new List<Expression>();
       while (identical(tokenType, TokenType.PERIOD_PERIOD)) {
         Expression section = parseCascadeSection();
         if (section != null) {
           cascadeSections.add(section);
         }
         tokenType = _currentToken.type;
       }
       expression = new CascadeExpression.full(expression, cascadeSections);
     }
     return new ConstructorFieldInitializer.full(keyword, period, fieldName, equals, expression);
   }
 
   /**
    * Parse the name of a constructor.
+   *
    * <pre>
    * constructorName:
-   * type ('.' identifier)?
+   *     type ('.' identifier)?
    * </pre>
+   *
    * @return the constructor name that was parsed
    */
   ConstructorName parseConstructorName() {
     TypeName type = parseTypeName();
     Token period = null;
     SimpleIdentifier name = null;
     if (matches5(TokenType.PERIOD)) {
       period = andAdvance;
       name = parseSimpleIdentifier();
     }
     return new ConstructorName.full(type, period, name);
   }
 
   /**
    * Parse a continue statement.
+   *
    * <pre>
    * continueStatement ::=
-   * 'continue' identifier? ';'
+   *     'continue' identifier? ';'
    * </pre>
+   *
    * @return the continue statement that was parsed
    */
   Statement parseContinueStatement() {
     Token continueKeyword = expect(Keyword.CONTINUE);
     if (!_inLoop && !_inSwitch) {
       reportError8(ParserErrorCode.CONTINUE_OUTSIDE_OF_LOOP, continueKeyword, []);
     }
     SimpleIdentifier label = null;
     if (matchesIdentifier()) {
       label = parseSimpleIdentifier();
     }
     if (_inSwitch && !_inLoop && label == null) {
       reportError8(ParserErrorCode.CONTINUE_WITHOUT_LABEL_IN_CASE, continueKeyword, []);
     }
     Token semicolon = expect2(TokenType.SEMICOLON);
     return new ContinueStatement.full(continueKeyword, label, semicolon);
   }
 
   /**
    * Parse a directive.
+   *
    * <pre>
    * directive ::=
-   * exportDirective
-   * | libraryDirective
-   * | importDirective
-   * | partDirective
+   *     exportDirective
+   *   | libraryDirective
+   *   | importDirective
+   *   | partDirective
    * </pre>
+   *
    * @param commentAndMetadata the metadata to be associated with the directive
    * @return the directive that was parsed
    */
   Directive parseDirective(CommentAndMetadata commentAndMetadata) {
     if (matches(Keyword.IMPORT)) {
       return parseImportDirective(commentAndMetadata);
     } else if (matches(Keyword.EXPORT)) {
       return parseExportDirective(commentAndMetadata);
     } else if (matches(Keyword.LIBRARY)) {
       return parseLibraryDirective(commentAndMetadata);
     } else if (matches(Keyword.PART)) {
       return parsePartDirective(commentAndMetadata);
     } else {
       throw new IllegalStateException("parseDirective invoked in an invalid state; currentToken = ${_currentToken}");
     }
   }
 
   /**
    * Parse a documentation comment.
+   *
    * <pre>
    * documentationComment ::=
-   * multiLineComment?
-   * | singleLineComment
+   *     multiLineComment?
+   *   | singleLineComment*
    * </pre>
+   *
    * @return the documentation comment that was parsed, or `null` if there was no comment
    */
   Comment parseDocumentationComment() {
     List<Token> commentTokens = new List<Token>();
     Token commentToken = _currentToken.precedingComments;
     while (commentToken != null) {
       if (identical(commentToken.type, TokenType.SINGLE_LINE_COMMENT)) {
         if (commentToken.lexeme.startsWith("///")) {
           if (commentTokens.length == 1 && commentTokens[0].lexeme.startsWith("/**")) {
             commentTokens.clear();
@@ skipping 11 matching lines @@
     if (commentTokens.isEmpty) {
       return null;
     }
     List<Token> tokens = new List.from(commentTokens);
     List<CommentReference> references = parseCommentReferences(tokens);
     return Comment.createDocumentationComment2(tokens, references);
   }
 
   /**
    * Parse a do statement.
+   *
    * <pre>
    * doStatement ::=
-   * 'do' statement 'while' '(' expression ')' ';'
+   *     'do' statement 'while' '(' expression ')' ';'
    * </pre>
+   *
    * @return the do statement that was parsed
    */
   Statement parseDoStatement() {
     bool wasInLoop = _inLoop;
     _inLoop = true;
     try {
       Token doKeyword = expect(Keyword.DO);
       Statement body = parseStatement2();
       Token whileKeyword = expect(Keyword.WHILE);
       Token leftParenthesis = expect2(TokenType.OPEN_PAREN);
       Expression condition = parseExpression2();
       Token rightParenthesis = expect2(TokenType.CLOSE_PAREN);
       Token semicolon = expect2(TokenType.SEMICOLON);
       return new DoStatement.full(doKeyword, body, whileKeyword, leftParenthesis, condition, rightParenthesis, semicolon);
     } finally {
       _inLoop = wasInLoop;
     }
   }
 
   /**
    * Parse an empty statement.
+   *
    * <pre>
    * emptyStatement ::=
-   * ';'
+   *     ';'
    * </pre>
+   *
    * @return the empty statement that was parsed
    */
   Statement parseEmptyStatement() => new EmptyStatement.full(andAdvance);
 
   /**
    * Parse an equality expression.
+   *
    * <pre>
    * equalityExpression ::=
-   * relationalExpression (equalityOperator relationalExpression)?
-   * | 'super' equalityOperator relationalExpression
+   *     relationalExpression (equalityOperator relationalExpression)?
+   *   | 'super' equalityOperator relationalExpression
    * </pre>
+   *
    * @return the equality expression that was parsed
    */
   Expression parseEqualityExpression() {
     Expression expression;
     if (matches(Keyword.SUPER) && _currentToken.next.type.isEqualityOperator) {
       expression = new SuperExpression.full(andAdvance);
     } else {
       expression = parseRelationalExpression();
     }
     while (_currentToken.type.isEqualityOperator) {
       Token operator = andAdvance;
       expression = new BinaryExpression.full(expression, operator, parseRelationalExpression());
     }
     return expression;
   }
 
   /**
    * Parse an export directive.
+   *
    * <pre>
    * exportDirective ::=
-   * metadata 'export' stringLiteral combinator*';'
+   *     metadata 'export' stringLiteral combinator*';'
    * </pre>
+   *
    * @param commentAndMetadata the metadata to be associated with the directive
    * @return the export directive that was parsed
    */
   ExportDirective parseExportDirective(CommentAndMetadata commentAndMetadata) {
     Token exportKeyword = expect(Keyword.EXPORT);
     StringLiteral libraryUri = parseStringLiteral();
     List<Combinator> combinators = parseCombinators();
     Token semicolon = expect2(TokenType.SEMICOLON);
     return new ExportDirective.full(commentAndMetadata.comment, commentAndMetadata.metadata, exportKeyword, libraryUri, combinators, semicolon);
   }
 
   /**
    * Parse an expression that does not contain any cascades.
+   *
    * <pre>
    * expression ::=
-   * assignableExpression assignmentOperator expression
-   * | conditionalExpression cascadeSection
-   * | throwExpression
+   *     assignableExpression assignmentOperator expression
+   *   | conditionalExpression cascadeSection*
+   *   | throwExpression
    * </pre>
+   *
    * @return the expression that was parsed
    */
   Expression parseExpression2() {
     if (matches(Keyword.THROW)) {
       return parseThrowExpression();
     } else if (matches(Keyword.RETHROW)) {
       return parseRethrowExpression();
     }
     Expression expression = parseConditionalExpression();
     TokenType tokenType = _currentToken.type;
@@ skipping 10 matching lines @@
     } else if (tokenType.isAssignmentOperator) {
       Token operator = andAdvance;
       ensureAssignable(expression);
       return new AssignmentExpression.full(expression, operator, parseExpression2());
     }
     return expression;
   }
 
   /**
    * Parse a list of expressions.
+   *
    * <pre>
    * expressionList ::=
-   * expression (',' expression)
+   *     expression (',' expression)*
    * </pre>
+   *
    * @return the expression that was parsed
    */
   List<Expression> parseExpressionList() {
     List<Expression> expressions = new List<Expression>();
     expressions.add(parseExpression2());
     while (optional(TokenType.COMMA)) {
       expressions.add(parseExpression2());
     }
     return expressions;
   }
 
   /**
    * Parse an expression that does not contain any cascades.
+   *
    * <pre>
    * expressionWithoutCascade ::=
-   * assignableExpression assignmentOperator expressionWithoutCascade
-   * | conditionalExpression
-   * | throwExpressionWithoutCascade
+   *     assignableExpression assignmentOperator expressionWithoutCascade
+   *   | conditionalExpression
+   *   | throwExpressionWithoutCascade
    * </pre>
+   *
    * @return the expression that was parsed
    */
   Expression parseExpressionWithoutCascade() {
     if (matches(Keyword.THROW)) {
       return parseThrowExpressionWithoutCascade();
     } else if (matches(Keyword.RETHROW)) {
       return parseRethrowExpression();
     }
     Expression expression = parseConditionalExpression();
     if (_currentToken.type.isAssignmentOperator) {
       Token operator = andAdvance;
       ensureAssignable(expression);
       expression = new AssignmentExpression.full(expression, operator, parseExpressionWithoutCascade());
     }
     return expression;
   }
 
   /**
    * Parse a class extends clause.
+   *
    * <pre>
    * classExtendsClause ::=
-   * 'extends' type
+   *     'extends' type
    * </pre>
+   *
    * @return the class extends clause that was parsed
    */
   ExtendsClause parseExtendsClause() {
     Token keyword = expect(Keyword.EXTENDS);
     TypeName superclass = parseTypeName();
     return new ExtendsClause.full(keyword, superclass);
   }
 
   /**
    * Parse the 'final', 'const', 'var' or type preceding a variable declaration.
+   *
    * <pre>
    * finalConstVarOrType ::=
-   * | 'final' type?
-   * | 'const' type?
-   * | 'var'
-   * | type
+   *   | 'final' type?
+   *   | 'const' type?
+   *   | 'var'
+   *   | type
    * </pre>
+   *
    * @param optional `true` if the keyword and type are optional
    * @return the 'final', 'const', 'var' or type that was parsed
    */
   FinalConstVarOrType parseFinalConstVarOrType(bool optional) {
     Token keyword = null;
     TypeName type = null;
     if (matches(Keyword.FINAL) || matches(Keyword.CONST)) {
       keyword = andAdvance;
       if (matchesIdentifier2(peek()) || matches4(peek(), TokenType.LT) || matches3(peek(), Keyword.THIS) || (matches4(peek(), TokenType.PERIOD) && matchesIdentifier2(peek2(2)) && (matchesIdentifier2(peek2(3)) || matches4(peek2(3), TokenType.LT) || matches3(peek2(3), Keyword.THIS)))) {
         type = parseTypeName();
       }
     } else if (matches(Keyword.VAR)) {
       keyword = andAdvance;
     } else {
       if (matchesIdentifier2(peek()) || matches4(peek(), TokenType.LT) || matches3(peek(), Keyword.THIS) || (matches4(peek(), TokenType.PERIOD) && matchesIdentifier2(peek2(2)) && (matchesIdentifier2(peek2(3)) || matches4(peek2(3), TokenType.LT) || matches3(peek2(3), Keyword.THIS)))) {
         type = parseReturnType();
       } else if (!optional) {
         reportError7(ParserErrorCode.MISSING_CONST_FINAL_VAR_OR_TYPE, []);
       }
     }
     return new FinalConstVarOrType(keyword, type);
   }
 
   /**
-   * Parse a formal parameter. At most one of `isOptional` and `isNamed` can be`true`.
+   * Parse a formal parameter. At most one of `isOptional` and `isNamed` can be
+   * `true`.
+   *
    * <pre>
    * defaultFormalParameter ::=
-   * normalFormalParameter ('=' expression)?
+   *     normalFormalParameter ('=' expression)?
+   *
    * defaultNamedParameter ::=
-   * normalFormalParameter (':' expression)?
+   *     normalFormalParameter (':' expression)?
    * </pre>
+   *
    * @param kind the kind of parameter being expected based on the presence or absence of group
-   * delimiters
+   *          delimiters
    * @return the formal parameter that was parsed
    */
   FormalParameter parseFormalParameter(ParameterKind kind) {
     NormalFormalParameter parameter = parseNormalFormalParameter();
     if (matches5(TokenType.EQ)) {
       Token seperator = andAdvance;
       Expression defaultValue = parseExpression2();
       if (identical(kind, ParameterKind.NAMED)) {
         reportError8(ParserErrorCode.WRONG_SEPARATOR_FOR_NAMED_PARAMETER, seperator, []);
       } else if (identical(kind, ParameterKind.REQUIRED)) {
@@ skipping 10 matching lines @@
       }
       return new DefaultFormalParameter.full(parameter, kind, seperator, defaultValue);
     } else if (kind != ParameterKind.REQUIRED) {
       return new DefaultFormalParameter.full(parameter, kind, null, null);
     }
     return parameter;
   }
 
   /**
    * Parse a list of formal parameters.
+   *
    * <pre>
    * formalParameterList ::=
-   * '(' ')'
-   * | '(' normalFormalParameters (',' optionalFormalParameters)? ')'
-   * | '(' optionalFormalParameters ')'
+   *     '(' ')'
+   *   | '(' normalFormalParameters (',' optionalFormalParameters)? ')'
+   *   | '(' optionalFormalParameters ')'
+   *
    * normalFormalParameters ::=
-   * normalFormalParameter (',' normalFormalParameter)
+   *     normalFormalParameter (',' normalFormalParameter)*
+   *
    * optionalFormalParameters ::=
-   * optionalPositionalFormalParameters
-   * | namedFormalParameters
+   *     optionalPositionalFormalParameters
+   *   | namedFormalParameters
+   *
    * optionalPositionalFormalParameters ::=
-   * '\[' defaultFormalParameter (',' defaultFormalParameter)* '\]'
+   *     '[' defaultFormalParameter (',' defaultFormalParameter)* ']'
+   *
    * namedFormalParameters ::=
-   * '{' defaultNamedParameter (',' defaultNamedParameter)* '}'
+   *     '{' defaultNamedParameter (',' defaultNamedParameter)* '}'
    * </pre>
+   *
    * @return the formal parameters that were parsed
    */
   FormalParameterList parseFormalParameterList() {
     Token leftParenthesis = expect2(TokenType.OPEN_PAREN);
     if (matches5(TokenType.CLOSE_PAREN)) {
       return new FormalParameterList.full(leftParenthesis, null, null, null, andAdvance);
     }
     List<FormalParameter> parameters = new List<FormalParameter>();
     List<FormalParameter> normalParameters = new List<FormalParameter>();
     List<FormalParameter> positionalParameters = new List<FormalParameter>();
     List<FormalParameter> namedParameters = new List<FormalParameter>();
     List<FormalParameter> currentParameters = normalParameters;
     Token leftSquareBracket = null;
     Token rightSquareBracket = null;
     Token leftCurlyBracket = null;
     Token rightCurlyBracket = null;
     ParameterKind kind = ParameterKind.REQUIRED;
     bool firstParameter = true;
     bool reportedMuliplePositionalGroups = false;
     bool reportedMulipleNamedGroups = false;
     bool reportedMixedGroups = false;
+    bool wasOptionalParameter = false;
     Token initialToken = null;
     do {
       if (firstParameter) {
         firstParameter = false;
       } else if (!optional(TokenType.COMMA)) {
         if (getEndToken(leftParenthesis) != null) {
           reportError7(ParserErrorCode.EXPECTED_TOKEN, [TokenType.COMMA.lexeme]);
         } else {
           reportError8(ParserErrorCode.MISSING_CLOSING_PARENTHESIS, _currentToken.previous, []);
           break;
         }
       }
       initialToken = _currentToken;
       if (matches5(TokenType.OPEN_SQUARE_BRACKET)) {
+        wasOptionalParameter = true;
         if (leftSquareBracket != null && !reportedMuliplePositionalGroups) {
           reportError7(ParserErrorCode.MULTIPLE_POSITIONAL_PARAMETER_GROUPS, []);
           reportedMuliplePositionalGroups = true;
         }
         if (leftCurlyBracket != null && !reportedMixedGroups) {
           reportError7(ParserErrorCode.MIXED_PARAMETER_GROUPS, []);
           reportedMixedGroups = true;
         }
         leftSquareBracket = andAdvance;
         currentParameters = positionalParameters;
         kind = ParameterKind.POSITIONAL;
       } else if (matches5(TokenType.OPEN_CURLY_BRACKET)) {
+        wasOptionalParameter = true;
         if (leftCurlyBracket != null && !reportedMulipleNamedGroups) {
           reportError7(ParserErrorCode.MULTIPLE_NAMED_PARAMETER_GROUPS, []);
           reportedMulipleNamedGroups = true;
         }
         if (leftSquareBracket != null && !reportedMixedGroups) {
           reportError7(ParserErrorCode.MIXED_PARAMETER_GROUPS, []);
           reportedMixedGroups = true;
         }
         leftCurlyBracket = andAdvance;
         currentParameters = namedParameters;
         kind = ParameterKind.NAMED;
       }
       FormalParameter parameter = parseFormalParameter(kind);
       parameters.add(parameter);
       currentParameters.add(parameter);
+      if (identical(kind, ParameterKind.REQUIRED) && wasOptionalParameter) {
+        reportError(ParserErrorCode.NORMAL_BEFORE_OPTIONAL_PARAMETERS, parameter, []);
+      }
       if (matches5(TokenType.CLOSE_SQUARE_BRACKET)) {
         rightSquareBracket = andAdvance;
         currentParameters = normalParameters;
         if (leftSquareBracket == null) {
           if (leftCurlyBracket != null) {
             reportError7(ParserErrorCode.WRONG_TERMINATOR_FOR_PARAMETER_GROUP, ["}"]);
             rightCurlyBracket = rightSquareBracket;
             rightSquareBracket = null;
           } else {
             reportError7(ParserErrorCode.UNEXPECTED_TERMINATOR_FOR_PARAMETER_GROUP, ["["]);
@@ skipping 26 matching lines @@
       leftSquareBracket = leftCurlyBracket;
     }
     if (rightSquareBracket == null) {
       rightSquareBracket = rightCurlyBracket;
     }
     return new FormalParameterList.full(leftParenthesis, parameters, leftSquareBracket, rightSquareBracket, rightParenthesis);
   }
 
   /**
    * Parse a for statement.
+   *
    * <pre>
    * forStatement ::=
-   * 'for' '(' forLoopParts ')' statement
+   *     'for' '(' forLoopParts ')' statement
+   *
    * forLoopParts ::=
-   * forInitializerStatement expression? ';' expressionList?
-   * | declaredIdentifier 'in' expression
-   * | identifier 'in' expression
+   *     forInitializerStatement expression? ';' expressionList?
+   *   | declaredIdentifier 'in' expression
+   *   | identifier 'in' expression
+   *
    * forInitializerStatement ::=
-   * localVariableDeclaration ';'
-   * | expression? ';'
+   *     localVariableDeclaration ';'
+   *   | expression? ';'
    * </pre>
+   *
    * @return the for statement that was parsed
    */
   Statement parseForStatement() {
     bool wasInLoop = _inLoop;
     _inLoop = true;
     try {
       Token forKeyword = expect(Keyword.FOR);
       Token leftParenthesis = expect2(TokenType.OPEN_PAREN);
       VariableDeclarationList variableList = null;
       Expression initialization = null;
@@ skipping 44 matching lines @@
       Token rightParenthesis = expect2(TokenType.CLOSE_PAREN);
       Statement body = parseStatement2();
       return new ForStatement.full(forKeyword, leftParenthesis, variableList, initialization, leftSeparator, condition, rightSeparator, updaters, rightParenthesis, body);
     } finally {
       _inLoop = wasInLoop;
     }
   }
 
   /**
    * Parse a function body.
+   *
    * <pre>
    * functionBody ::=
-   * '=>' expression ';'
-   * | block
+   *     '=>' expression ';'
+   *   | block
+   *
    * functionExpressionBody ::=
-   * '=>' expression
-   * | block
+   *     '=>' expression
+   *   | block
    * </pre>
+   *
    * @param mayBeEmpty `true` if the function body is allowed to be empty
    * @param emptyErrorCode the error code to report if function body expecte, but not found
    * @param inExpression `true` if the function body is being parsed as part of an expression
-   * and therefore does not have a terminating semicolon
+   *          and therefore does not have a terminating semicolon
    * @return the function body that was parsed
    */
   FunctionBody parseFunctionBody(bool mayBeEmpty, ParserErrorCode emptyErrorCode, bool inExpression) {
     bool wasInLoop = _inLoop;
     bool wasInSwitch = _inSwitch;
     _inLoop = false;
     _inSwitch = false;
     try {
       if (matches5(TokenType.SEMICOLON)) {
         if (!mayBeEmpty) {
@@ skipping 22 matching lines @@
         return new EmptyFunctionBody.full(createSyntheticToken2(TokenType.SEMICOLON));
       }
     } finally {
       _inLoop = wasInLoop;
       _inSwitch = wasInSwitch;
     }
   }
 
   /**
    * Parse a function declaration.
+   *
    * <pre>
    * functionDeclaration ::=
-   * functionSignature functionBody
-   * | returnType? getOrSet identifier formalParameterList functionBody
+   *     functionSignature functionBody
+   *   | returnType? getOrSet identifier formalParameterList functionBody
    * </pre>
+   *
    * @param commentAndMetadata the documentation comment and metadata to be associated with the
-   * declaration
+   *          declaration
    * @param externalKeyword the 'external' keyword, or `null` if the function is not external
    * @param returnType the return type, or `null` if there is no return type
    * @param isStatement `true` if the function declaration is being parsed as a statement
    * @return the function declaration that was parsed
    */
   FunctionDeclaration parseFunctionDeclaration(CommentAndMetadata commentAndMetadata, Token externalKeyword, TypeName returnType) {
     Token keyword = null;
     bool isGetter = false;
     if (matches(Keyword.GET) && !matches4(peek(), TokenType.OPEN_PAREN)) {
       keyword = andAdvance;
@@ skipping 18 matching lines @@
     if (externalKeyword == null) {
       body = parseFunctionBody(false, ParserErrorCode.MISSING_FUNCTION_BODY, false);
     } else {
       body = new EmptyFunctionBody.full(expect2(TokenType.SEMICOLON));
     }
     return new FunctionDeclaration.full(commentAndMetadata.comment, commentAndMetadata.metadata, externalKeyword, returnType, keyword, name, new FunctionExpression.full(parameters, body));
   }
 
   /**
    * Parse a function declaration statement.
+   *
    * <pre>
    * functionDeclarationStatement ::=
-   * functionSignature functionBody
+   *     functionSignature functionBody
    * </pre>
+   *
    * @return the function declaration statement that was parsed
    */
-  Statement parseFunctionDeclarationStatement() => parseFunctionDeclarationStatement2(parseCommentAndMetadata(), parseOptionalReturnType());
+  Statement parseFunctionDeclarationStatement() {
+    Modifiers modifiers = parseModifiers();
+    validateModifiersForFunctionDeclarationStatement(modifiers);
+    return parseFunctionDeclarationStatement2(parseCommentAndMetadata(), parseOptionalReturnType());
+  }
 
   /**
    * Parse a function declaration statement.
+   *
    * <pre>
    * functionDeclarationStatement ::=
-   * functionSignature functionBody
+   *     functionSignature functionBody
    * </pre>
+   *
    * @param commentAndMetadata the documentation comment and metadata to be associated with the
-   * declaration
+   *          declaration
    * @param returnType the return type, or `null` if there is no return type
    * @return the function declaration statement that was parsed
    */
   Statement parseFunctionDeclarationStatement2(CommentAndMetadata commentAndMetadata, TypeName returnType) => new FunctionDeclarationStatement.full(parseFunctionDeclaration(commentAndMetadata, null, returnType));
 
   /**
    * Parse a function expression.
+   *
    * <pre>
    * functionExpression ::=
-   * formalParameterList functionExpressionBody
+   *     formalParameterList functionExpressionBody
    * </pre>
+   *
    * @return the function expression that was parsed
    */
   FunctionExpression parseFunctionExpression() {
     FormalParameterList parameters = parseFormalParameterList();
     validateFormalParameterList(parameters);
     FunctionBody body = parseFunctionBody(false, ParserErrorCode.MISSING_FUNCTION_BODY, true);
     return new FunctionExpression.full(parameters, body);
   }
 
   /**
    * Parse a function type alias.
+   *
    * <pre>
    * functionTypeAlias ::=
-   * functionPrefix typeParameterList? formalParameterList ';'
+   *     functionPrefix typeParameterList? formalParameterList ';'
+   *
    * functionPrefix ::=
-   * returnType? name
+   *     returnType? name
    * </pre>
+   *
    * @param commentAndMetadata the metadata to be associated with the member
    * @param keyword the token representing the 'typedef' keyword
    * @return the function type alias that was parsed
    */
   FunctionTypeAlias parseFunctionTypeAlias(CommentAndMetadata commentAndMetadata, Token keyword) {
     TypeName returnType = null;
     if (hasReturnTypeInTypeAlias()) {
       returnType = parseReturnType();
     }
     SimpleIdentifier name = parseSimpleIdentifier();
@@ skipping 11 matching lines @@
       return new FunctionTypeAlias.full(commentAndMetadata.comment, commentAndMetadata.metadata, keyword, returnType, name, typeParameters, new FormalParameterList.full(createSyntheticToken2(TokenType.OPEN_PAREN), null, null, null, createSyntheticToken2(TokenType.CLOSE_PAREN)), createSyntheticToken2(TokenType.SEMICOLON));
     }
     FormalParameterList parameters = parseFormalParameterList();
     validateFormalParameterList(parameters);
     Token semicolon = expect2(TokenType.SEMICOLON);
     return new FunctionTypeAlias.full(commentAndMetadata.comment, commentAndMetadata.metadata, keyword, returnType, name, typeParameters, parameters, semicolon);
   }
 
   /**
    * Parse a getter.
+   *
    * <pre>
    * getter ::=
-   * getterSignature functionBody?
+   *     getterSignature functionBody?
+   *
    * getterSignature ::=
-   * 'external'? 'static'? returnType? 'get' identifier
+   *     'external'? 'static'? returnType? 'get' identifier
    * </pre>
+   *
    * @param commentAndMetadata the documentation comment and metadata to be associated with the
-   * declaration
+   *          declaration
    * @param externalKeyword the 'external' token
    * @param staticKeyword the static keyword, or `null` if the getter is not static
    * @param the return type that has already been parsed, or `null` if there was no return
-   * type
+   *          type
    * @return the getter that was parsed
    */
   MethodDeclaration parseGetter(CommentAndMetadata commentAndMetadata, Token externalKeyword, Token staticKeyword, TypeName returnType) {
     Token propertyKeyword = expect(Keyword.GET);
     SimpleIdentifier name = parseSimpleIdentifier();
     if (matches5(TokenType.OPEN_PAREN) && matches4(peek(), TokenType.CLOSE_PAREN)) {
       reportError7(ParserErrorCode.GETTER_WITH_PARAMETERS, []);
       advance();
       advance();
     }
     FunctionBody body = parseFunctionBody(externalKeyword != null || staticKeyword == null, ParserErrorCode.STATIC_GETTER_WITHOUT_BODY, false);
     if (externalKeyword != null && body is! EmptyFunctionBody) {
       reportError7(ParserErrorCode.EXTERNAL_GETTER_WITH_BODY, []);
     }
     return new MethodDeclaration.full(commentAndMetadata.comment, commentAndMetadata.metadata, externalKeyword, staticKeyword, returnType, propertyKeyword, null, name, null, body);
   }
 
   /**
    * Parse a list of identifiers.
+   *
    * <pre>
    * identifierList ::=
-   * identifier (',' identifier)
+   *     identifier (',' identifier)*
    * </pre>
+   *
    * @return the list of identifiers that were parsed
    */
   List<SimpleIdentifier> parseIdentifierList() {
     List<SimpleIdentifier> identifiers = new List<SimpleIdentifier>();
     identifiers.add(parseSimpleIdentifier());
     while (matches5(TokenType.COMMA)) {
       advance();
       identifiers.add(parseSimpleIdentifier());
     }
     return identifiers;
   }
 
   /**
    * Parse an if statement.
+   *
    * <pre>
    * ifStatement ::=
-   * 'if' '(' expression ')' statement ('else' statement)?
+   *     'if' '(' expression ')' statement ('else' statement)?
    * </pre>
+   *
    * @return the if statement that was parsed
    */
   Statement parseIfStatement() {
     Token ifKeyword = expect(Keyword.IF);
     Token leftParenthesis = expect2(TokenType.OPEN_PAREN);
     Expression condition = parseExpression2();
     Token rightParenthesis = expect2(TokenType.CLOSE_PAREN);
     Statement thenStatement = parseStatement2();
     Token elseKeyword = null;
     Statement elseStatement = null;
     if (matches(Keyword.ELSE)) {
       elseKeyword = andAdvance;
       elseStatement = parseStatement2();
     }
     return new IfStatement.full(ifKeyword, leftParenthesis, condition, rightParenthesis, thenStatement, elseKeyword, elseStatement);
   }
 
   /**
    * Parse an implements clause.
+   *
    * <pre>
    * implementsClause ::=
-   * 'implements' type (',' type)
+   *     'implements' type (',' type)*
    * </pre>
+   *
    * @return the implements clause that was parsed
    */
   ImplementsClause parseImplementsClause() {
     Token keyword = expect(Keyword.IMPLEMENTS);
     List<TypeName> interfaces = new List<TypeName>();
     interfaces.add(parseTypeName());
     while (optional(TokenType.COMMA)) {
       interfaces.add(parseTypeName());
     }
     return new ImplementsClause.full(keyword, interfaces);
   }
 
   /**
    * Parse an import directive.
+   *
    * <pre>
    * importDirective ::=
-   * metadata 'import' stringLiteral ('as' identifier)? combinator*';'
+   *     metadata 'import' stringLiteral ('as' identifier)? combinator*';'
    * </pre>
+   *
    * @param commentAndMetadata the metadata to be associated with the directive
    * @return the import directive that was parsed
    */
   ImportDirective parseImportDirective(CommentAndMetadata commentAndMetadata) {
     Token importKeyword = expect(Keyword.IMPORT);
     StringLiteral libraryUri = parseStringLiteral();
     Token asToken = null;
     SimpleIdentifier prefix = null;
     if (matches(Keyword.AS)) {
       asToken = andAdvance;
       prefix = parseSimpleIdentifier();
     }
     List<Combinator> combinators = parseCombinators();
     Token semicolon = expect2(TokenType.SEMICOLON);
     return new ImportDirective.full(commentAndMetadata.comment, commentAndMetadata.metadata, importKeyword, libraryUri, asToken, prefix, combinators, semicolon);
   }
 
   /**
    * Parse a list of initialized identifiers.
+   *
    * <pre>
    * ?? ::=
-   * 'static'? ('var' | type) initializedIdentifierList ';'
-   * | 'final' type? initializedIdentifierList ';'
+   *     'static'? ('var' | type) initializedIdentifierList ';'
+   *   | 'final' type? initializedIdentifierList ';'
+   *
    * initializedIdentifierList ::=
-   * initializedIdentifier (',' initializedIdentifier)
+   *     initializedIdentifier (',' initializedIdentifier)*
+   *
    * initializedIdentifier ::=
-   * identifier ('=' expression)?
+   *     identifier ('=' expression)?
    * </pre>
+   *
    * @param commentAndMetadata the documentation comment and metadata to be associated with the
-   * declaration
+   *          declaration
    * @param staticKeyword the static keyword, or `null` if the getter is not static
    * @param keyword the token representing the 'final', 'const' or 'var' keyword, or `null` if
-   * there is no keyword
+   *          there is no keyword
    * @param type the type that has already been parsed, or `null` if 'var' was provided
    * @return the getter that was parsed
    */
   FieldDeclaration parseInitializedIdentifierList(CommentAndMetadata commentAndMetadata, Token staticKeyword, Token keyword, TypeName type) {
     VariableDeclarationList fieldList = parseVariableDeclarationList2(null, keyword, type);
     return new FieldDeclaration.full(commentAndMetadata.comment, commentAndMetadata.metadata, staticKeyword, fieldList, expect2(TokenType.SEMICOLON));
   }
 
   /**
    * Parse an instance creation expression.
+   *
    * <pre>
    * instanceCreationExpression ::=
-   * ('new' | 'const') type ('.' identifier)? argumentList
+   *     ('new' | 'const') type ('.' identifier)? argumentList
    * </pre>
+   *
    * @param keyword the 'new' or 'const' keyword that introduces the expression
    * @return the instance creation expression that was parsed
    */
   InstanceCreationExpression parseInstanceCreationExpression(Token keyword) {
     ConstructorName constructorName = parseConstructorName();
     ArgumentList argumentList = parseArgumentList();
     return new InstanceCreationExpression.full(keyword, constructorName, argumentList);
   }
 
   /**
    * Parse a library directive.
+   *
    * <pre>
    * libraryDirective ::=
-   * metadata 'library' identifier ';'
+   *     metadata 'library' identifier ';'
    * </pre>
+   *
    * @param commentAndMetadata the metadata to be associated with the directive
    * @return the library directive that was parsed
    */
   LibraryDirective parseLibraryDirective(CommentAndMetadata commentAndMetadata) {
     Token keyword = expect(Keyword.LIBRARY);
     LibraryIdentifier libraryName = parseLibraryName(ParserErrorCode.MISSING_NAME_IN_LIBRARY_DIRECTIVE, keyword);
     Token semicolon = expect2(TokenType.SEMICOLON);
     return new LibraryDirective.full(commentAndMetadata.comment, commentAndMetadata.metadata, keyword, libraryName, semicolon);
   }
 
   /**
    * Parse a library identifier.
+   *
    * <pre>
    * libraryIdentifier ::=
-   * identifier ('.' identifier)
+   *     identifier ('.' identifier)*
    * </pre>
+   *
    * @return the library identifier that was parsed
    */
   LibraryIdentifier parseLibraryIdentifier() {
     List<SimpleIdentifier> components = new List<SimpleIdentifier>();
     components.add(parseSimpleIdentifier());
     while (matches5(TokenType.PERIOD)) {
       advance();
       components.add(parseSimpleIdentifier());
     }
     return new LibraryIdentifier.full(components);
   }
 
   /**
    * Parse a library name.
+   *
    * <pre>
    * libraryName ::=
-   * libraryIdentifier
+   *     libraryIdentifier
    * </pre>
+   *
    * @param missingNameError the error code to be used if the library name is missing
    * @param missingNameToken the token associated with the error produced if the library name is
-   * missing
+   *          missing
    * @return the library name that was parsed
    */
   LibraryIdentifier parseLibraryName(ParserErrorCode missingNameError, Token missingNameToken) {
     if (matchesIdentifier()) {
       return parseLibraryIdentifier();
     } else if (matches5(TokenType.STRING)) {
       StringLiteral string = parseStringLiteral();
       reportError(ParserErrorCode.NON_IDENTIFIER_LIBRARY_NAME, string, []);
     } else {
       reportError8(missingNameError, missingNameToken, []);
     }
     List<SimpleIdentifier> components = new List<SimpleIdentifier>();
     components.add(createSyntheticIdentifier());
     return new LibraryIdentifier.full(components);
   }
 
   /**
    * Parse a list literal.
+   *
    * <pre>
    * listLiteral ::=
-   * 'const'? typeArguments? '\[' (expressionList ','?)? '\]'
+   *     'const'? typeArguments? '[' (expressionList ','?)? ']'
    * </pre>
+   *
    * @param modifier the 'const' modifier appearing before the literal, or `null` if there is
-   * no modifier
+   *          no modifier
    * @param typeArguments the type arguments appearing before the literal, or `null` if there
-   * are no type arguments
+   *          are no type arguments
    * @return the list literal that was parsed
    */
   ListLiteral parseListLiteral(Token modifier, TypeArgumentList typeArguments) {
     if (matches5(TokenType.INDEX)) {
       BeginToken leftBracket = new BeginToken(TokenType.OPEN_SQUARE_BRACKET, _currentToken.offset);
       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);
@@ skipping 11 matching lines @@
         return new ListLiteral.full(modifier, typeArguments, leftBracket, elements, andAdvance);
       }
       elements.add(parseExpression2());
     }
     Token rightBracket = expect2(TokenType.CLOSE_SQUARE_BRACKET);
     return new ListLiteral.full(modifier, typeArguments, leftBracket, elements, rightBracket);
   }
 
   /**
    * Parse a list or map literal.
+   *
    * <pre>
    * listOrMapLiteral ::=
-   * listLiteral
-   * | mapLiteral
+   *     listLiteral
+   *   | mapLiteral
    * </pre>
+   *
    * @param modifier the 'const' modifier appearing before the literal, or `null` if there is
-   * no modifier
+   *          no modifier
    * @return the list or map literal that was parsed
    */
   TypedLiteral parseListOrMapLiteral(Token modifier) {
     TypeArgumentList typeArguments = null;
     if (matches5(TokenType.LT)) {
       typeArguments = parseTypeArgumentList();
     }
     if (matches5(TokenType.OPEN_CURLY_BRACKET)) {
       return parseMapLiteral(modifier, typeArguments);
     } else if (matches5(TokenType.OPEN_SQUARE_BRACKET) || matches5(TokenType.INDEX)) {
       return parseListLiteral(modifier, typeArguments);
     }
     reportError7(ParserErrorCode.EXPECTED_LIST_OR_MAP_LITERAL, []);
     return new ListLiteral.full(modifier, typeArguments, createSyntheticToken2(TokenType.OPEN_SQUARE_BRACKET), null, createSyntheticToken2(TokenType.CLOSE_SQUARE_BRACKET));
   }
 
   /**
    * Parse a logical and expression.
+   *
    * <pre>
    * logicalAndExpression ::=
-   * bitwiseOrExpression ('&&' bitwiseOrExpression)
+   *     bitwiseOrExpression ('&&' bitwiseOrExpression)*
    * </pre>
+   *
    * @return the logical and expression that was parsed
    */
   Expression parseLogicalAndExpression() {
     Expression expression = parseBitwiseOrExpression();
     while (matches5(TokenType.AMPERSAND_AMPERSAND)) {
       Token operator = andAdvance;
       expression = new BinaryExpression.full(expression, operator, parseBitwiseOrExpression());
     }
     return expression;
   }
 
   /**
    * Parse a logical or expression.
+   *
    * <pre>
    * logicalOrExpression ::=
-   * logicalAndExpression ('||' logicalAndExpression)
+   *     logicalAndExpression ('||' logicalAndExpression)*
    * </pre>
+   *
    * @return the logical or expression that was parsed
    */
   Expression parseLogicalOrExpression() {
     Expression expression = parseLogicalAndExpression();
     while (matches5(TokenType.BAR_BAR)) {
       Token operator = andAdvance;
       expression = new BinaryExpression.full(expression, operator, parseLogicalAndExpression());
     }
     return expression;
   }
 
   /**
    * Parse a map literal.
+   *
    * <pre>
    * mapLiteral ::=
-   * 'const'? typeArguments? '{' (mapLiteralEntry (',' mapLiteralEntry)* ','?)? '}'
+   *     'const'? typeArguments? '{' (mapLiteralEntry (',' mapLiteralEntry)* ','?)? '}'
    * </pre>
+   *
    * @param modifier the 'const' modifier appearing before the literal, or `null` if there is
-   * no modifier
+   *          no modifier
    * @param typeArguments the type arguments that were declared, or `null` if there are no
-   * type arguments
+   *          type arguments
    * @return the map literal that was parsed
    */
   MapLiteral parseMapLiteral(Token modifier, TypeArgumentList typeArguments) {
     if (typeArguments != null) {
       int num = typeArguments.arguments.length;
       if (num != 2) {
         reportError(ParserErrorCode.EXPECTED_TWO_MAP_TYPE_ARGUMENTS, typeArguments, [num]);
       }
     }
     Token leftBracket = expect2(TokenType.OPEN_CURLY_BRACKET);
     List<MapLiteralEntry> entries = new List<MapLiteralEntry>();
     if (matches5(TokenType.CLOSE_CURLY_BRACKET)) {
       return new MapLiteral.full(modifier, typeArguments, leftBracket, entries, andAdvance);
     }
     entries.add(parseMapLiteralEntry());
     while (optional(TokenType.COMMA)) {
       if (matches5(TokenType.CLOSE_CURLY_BRACKET)) {
         return new MapLiteral.full(modifier, typeArguments, leftBracket, entries, andAdvance);
       }
       entries.add(parseMapLiteralEntry());
     }
     Token rightBracket = expect2(TokenType.CLOSE_CURLY_BRACKET);
     return new MapLiteral.full(modifier, typeArguments, leftBracket, entries, rightBracket);
   }
 
   /**
    * Parse a map literal entry.
+   *
    * <pre>
    * mapLiteralEntry ::=
-   * expression ':' expression
+   *     expression ':' expression
    * </pre>
+   *
    * @return the map literal entry that was parsed
    */
   MapLiteralEntry parseMapLiteralEntry() {
     Expression key = parseExpression2();
     Token separator = expect2(TokenType.COLON);
     Expression value = parseExpression2();
     return new MapLiteralEntry.full(key, separator, value);
   }
 
   /**
    * Parse a method declaration.
+   *
    * <pre>
    * functionDeclaration ::=
-   * 'external'? 'static'? functionSignature functionBody
-   * | 'external'? functionSignature ';'
+   *     'external'? 'static'? functionSignature functionBody
+   *   | 'external'? functionSignature ';'
    * </pre>
+   *
    * @param commentAndMetadata the documentation comment and metadata to be associated with the
-   * declaration
+   *          declaration
    * @param externalKeyword the 'external' token
    * @param staticKeyword the static keyword, or `null` if the getter is not static
    * @param returnType the return type of the method
    * @return the method declaration that was parsed
    */
   MethodDeclaration parseMethodDeclaration(CommentAndMetadata commentAndMetadata, Token externalKeyword, Token staticKeyword, TypeName returnType) {
     SimpleIdentifier methodName = parseSimpleIdentifier();
     FormalParameterList parameters = parseFormalParameterList();
     validateFormalParameterList(parameters);
     return parseMethodDeclaration2(commentAndMetadata, externalKeyword, staticKeyword, returnType, methodName, parameters);
   }
 
   /**
    * Parse a method declaration.
+   *
    * <pre>
    * functionDeclaration ::=
-   * ('external' 'static'?)? functionSignature functionBody
-   * | 'external'? functionSignature ';'
+   *     ('external' 'static'?)? functionSignature functionBody
+   *   | 'external'? functionSignature ';'
    * </pre>
+   *
    * @param commentAndMetadata the documentation comment and metadata to be associated with the
-   * declaration
+   *          declaration
    * @param externalKeyword the 'external' token
    * @param staticKeyword the static keyword, or `null` if the getter is not static
    * @param returnType the return type of the method
    * @param name the name of the method
    * @param parameters the parameters to the method
    * @return the method declaration that was parsed
    */
   MethodDeclaration parseMethodDeclaration2(CommentAndMetadata commentAndMetadata, Token externalKeyword, Token staticKeyword, TypeName returnType, SimpleIdentifier name, FormalParameterList parameters) {
     FunctionBody body = parseFunctionBody(externalKeyword != null || staticKeyword == null, ParserErrorCode.MISSING_FUNCTION_BODY, false);
     if (externalKeyword != null) {
       if (body is! EmptyFunctionBody) {
         reportError(ParserErrorCode.EXTERNAL_METHOD_WITH_BODY, body, []);
       }
     } else if (staticKeyword != null) {
       if (body is EmptyFunctionBody) {
         reportError(ParserErrorCode.ABSTRACT_STATIC_METHOD, body, []);
       }
     }
     return new MethodDeclaration.full(commentAndMetadata.comment, commentAndMetadata.metadata, externalKeyword, staticKeyword, returnType, null, null, name, parameters, body);
   }
 
   /**
    * 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`.
+   *
    * <pre>
    * modifiers ::=
-   * ('abstract' | 'const' | 'external' | 'factory' | 'final' | 'static' | 'var')
+   *     ('abstract' | 'const' | 'external' | 'factory' | 'final' | 'static' | 'var')*
    * </pre>
+   *
    * @return the modifiers that were parsed
    */
   Modifiers parseModifiers() {
     Modifiers modifiers = new Modifiers();
     bool progress = true;
     while (progress) {
       if (matches(Keyword.ABSTRACT) && !matches4(peek(), TokenType.PERIOD) && !matches4(peek(), TokenType.LT)) {
         if (modifiers.abstractKeyword != null) {
           reportError7(ParserErrorCode.DUPLICATED_MODIFIER, [_currentToken.lexeme]);
           advance();
@@ skipping 44 matching lines @@
         }
       } else {
         progress = false;
       }
     }
     return modifiers;
   }
 
   /**
    * Parse a multiplicative expression.
+   *
    * <pre>
    * multiplicativeExpression ::=
-   * unaryExpression (multiplicativeOperator unaryExpression)
-   * | 'super' (multiplicativeOperator unaryExpression)+
+   *     unaryExpression (multiplicativeOperator unaryExpression)*
+   *   | 'super' (multiplicativeOperator unaryExpression)+
    * </pre>
+   *
    * @return the multiplicative expression that was parsed
    */
   Expression parseMultiplicativeExpression() {
     Expression expression;
     if (matches(Keyword.SUPER) && _currentToken.next.type.isMultiplicativeOperator) {
       expression = new SuperExpression.full(andAdvance);
     } else {
       expression = parseUnaryExpression();
     }
     while (_currentToken.type.isMultiplicativeOperator) {
       Token operator = andAdvance;
       expression = new BinaryExpression.full(expression, operator, parseUnaryExpression());
     }
     return expression;
   }
 
   /**
    * Parse a new expression.
+   *
    * <pre>
    * newExpression ::=
-   * instanceCreationExpression
+   *     instanceCreationExpression
    * </pre>
+   *
    * @return the new expression that was parsed
    */
   InstanceCreationExpression parseNewExpression() => parseInstanceCreationExpression(expect(Keyword.NEW));
 
   /**
    * Parse a non-labeled statement.
+   *
    * <pre>
    * nonLabeledStatement ::=
-   * block
-   * | assertStatement
-   * | breakStatement
-   * | continueStatement
-   * | doStatement
-   * | forStatement
-   * | ifStatement
-   * | returnStatement
-   * | switchStatement
-   * | tryStatement
-   * | whileStatement
-   * | variableDeclarationList ';'
-   * | expressionStatement
-   * | functionSignature functionBody
+   *     block
+   *   | assertStatement
+   *   | breakStatement
+   *   | continueStatement
+   *   | doStatement
+   *   | forStatement
+   *   | ifStatement
+   *   | returnStatement
+   *   | switchStatement
+   *   | tryStatement
+   *   | whileStatement
+   *   | variableDeclarationList ';'
+   *   | expressionStatement
+   *   | functionSignature functionBody
    * </pre>
+   *
    * @return the non-labeled statement that was parsed
    */
   Statement parseNonLabeledStatement() {
     CommentAndMetadata commentAndMetadata = parseCommentAndMetadata();
     if (matches5(TokenType.OPEN_CURLY_BRACKET)) {
       if (matches4(peek(), TokenType.STRING)) {
         Token afterString = skipStringLiteral(_currentToken.next);
         if (afterString != null && identical(afterString.type, TokenType.COLON)) {
           return new ExpressionStatement.full(parseExpression2(), expect2(TokenType.SEMICOLON));
         }
@@ skipping 70 matching lines @@
     } else if (matches5(TokenType.CLOSE_CURLY_BRACKET)) {
       reportError7(ParserErrorCode.MISSING_STATEMENT, []);
       return new EmptyStatement.full(createSyntheticToken2(TokenType.SEMICOLON));
     } else {
       return new ExpressionStatement.full(parseExpression2(), expect2(TokenType.SEMICOLON));
     }
   }
 
   /**
    * Parse a normal formal parameter.
+   *
    * <pre>
    * normalFormalParameter ::=
-   * functionSignature
-   * | fieldFormalParameter
-   * | simpleFormalParameter
+   *     functionSignature
+   *   | fieldFormalParameter
+   *   | simpleFormalParameter
+   *
    * functionSignature:
-   * metadata returnType? identifier formalParameterList
+   *     metadata returnType? identifier formalParameterList
+   *
    * fieldFormalParameter ::=
-   * metadata finalConstVarOrType? 'this' '.' identifier
+   *     metadata finalConstVarOrType? 'this' '.' identifier
+   *
    * simpleFormalParameter ::=
-   * declaredIdentifier
-   * | metadata identifier
+   *     declaredIdentifier
+   *   | metadata identifier
    * </pre>
+   *
    * @return the normal formal parameter that was parsed
    */
   NormalFormalParameter parseNormalFormalParameter() {
     CommentAndMetadata commentAndMetadata = parseCommentAndMetadata();
     FinalConstVarOrType holder = parseFinalConstVarOrType(true);
     Token thisKeyword = null;
     Token period = null;
     if (matches(Keyword.THIS)) {
       thisKeyword = andAdvance;
       period = expect2(TokenType.PERIOD);
@@ skipping 10 matching lines @@
       reportError8(ParserErrorCode.VOID_PARAMETER, type.name.beginToken, []);
     }
     if (thisKeyword != null) {
       return new FieldFormalParameter.full(commentAndMetadata.comment, commentAndMetadata.metadata, holder.keyword, holder.type, thisKeyword, period, identifier);
     }
     return new SimpleFormalParameter.full(commentAndMetadata.comment, commentAndMetadata.metadata, holder.keyword, holder.type, identifier);
   }
 
   /**
    * Parse an operator declaration.
+   *
    * <pre>
    * operatorDeclaration ::=
-   * operatorSignature (';' | functionBody)
+   *     operatorSignature (';' | functionBody)
+   *
    * operatorSignature ::=
-   * 'external'? returnType? 'operator' operator formalParameterList
+   *     'external'? returnType? 'operator' operator formalParameterList
    * </pre>
+   *
    * @param commentAndMetadata the documentation comment and metadata to be associated with the
-   * declaration
+   *          declaration
    * @param externalKeyword the 'external' token
    * @param the return type that has already been parsed, or `null` if there was no return
-   * type
+   *          type
    * @return the operator declaration that was parsed
    */
   MethodDeclaration parseOperator(CommentAndMetadata commentAndMetadata, Token externalKeyword, TypeName returnType) {
     Token operatorKeyword;
     if (matches(Keyword.OPERATOR)) {
       operatorKeyword = andAdvance;
     } else {
       reportError8(ParserErrorCode.MISSING_KEYWORD_OPERATOR, _currentToken, []);
       operatorKeyword = createSyntheticToken(Keyword.OPERATOR);
     }
@@ skipping 12 matching lines @@
     validateFormalParameterList(parameters);
     FunctionBody body = parseFunctionBody(true, ParserErrorCode.MISSING_FUNCTION_BODY, false);
     if (externalKeyword != null && body is! EmptyFunctionBody) {
       reportError7(ParserErrorCode.EXTERNAL_OPERATOR_WITH_BODY, []);
     }
     return new MethodDeclaration.full(commentAndMetadata.comment, commentAndMetadata.metadata, externalKeyword, null, returnType, null, operatorKeyword, name, 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 (matches(Keyword.VOID)) {
       return parseReturnType();
     } else if (matchesIdentifier() && !matches(Keyword.GET) && !matches(Keyword.SET) && !matches(Keyword.OPERATOR) && (matchesIdentifier2(peek()) || matches4(peek(), TokenType.LT))) {
       return parseReturnType();
     } else if (matchesIdentifier() && matches4(peek(), TokenType.PERIOD) && matchesIdentifier2(peek2(2)) && (matchesIdentifier2(peek2(3)) || matches4(peek2(3), TokenType.LT))) {
       return parseReturnType();
     }
     return null;
   }
 
   /**
    * Parse a part or part-of directive.
+   *
    * <pre>
    * partDirective ::=
-   * metadata 'part' stringLiteral ';'
+   *     metadata 'part' stringLiteral ';'
+   *
    * partOfDirective ::=
-   * metadata 'part' 'of' identifier ';'
+   *     metadata 'part' 'of' identifier ';'
    * </pre>
+   *
    * @param commentAndMetadata the metadata to be associated with the directive
    * @return the part or part-of directive that was parsed
    */
   Directive parsePartDirective(CommentAndMetadata commentAndMetadata) {
     Token partKeyword = expect(Keyword.PART);
     if (matches2(_OF)) {
       Token ofKeyword = andAdvance;
       LibraryIdentifier libraryName = parseLibraryName(ParserErrorCode.MISSING_NAME_IN_PART_OF_DIRECTIVE, ofKeyword);
       Token semicolon = expect2(TokenType.SEMICOLON);
       return new PartOfDirective.full(commentAndMetadata.comment, commentAndMetadata.metadata, partKeyword, ofKeyword, libraryName, semicolon);
     }
     StringLiteral partUri = parseStringLiteral();
     Token semicolon = expect2(TokenType.SEMICOLON);
     return new PartDirective.full(commentAndMetadata.comment, commentAndMetadata.metadata, partKeyword, partUri, semicolon);
   }
 
   /**
    * Parse a postfix expression.
+   *
    * <pre>
    * postfixExpression ::=
-   * assignableExpression postfixOperator
-   * | primary selector
+   *     assignableExpression postfixOperator
+   *   | primary selector*
+   *
    * selector ::=
-   * assignableSelector
-   * | argumentList
+   *     assignableSelector
+   *   | argumentList
    * </pre>
+   *
    * @return the postfix expression that was parsed
    */
   Expression parsePostfixExpression() {
     Expression operand = parseAssignableExpression(true);
     if (matches5(TokenType.OPEN_SQUARE_BRACKET) || matches5(TokenType.PERIOD) || matches5(TokenType.OPEN_PAREN)) {
       do {
         if (matches5(TokenType.OPEN_PAREN)) {
           ArgumentList argumentList = parseArgumentList();
           if (operand is PropertyAccess) {
             PropertyAccess access = operand as PropertyAccess;
             operand = new MethodInvocation.full(access.target, access.operator, access.propertyName, argumentList);
           } else {
             operand = new FunctionExpressionInvocation.full(operand, argumentList);
           }
         } else {
           operand = parseAssignableSelector(operand, true);
         }
       } while (matches5(TokenType.OPEN_SQUARE_BRACKET) || matches5(TokenType.PERIOD) || matches5(TokenType.OPEN_PAREN));
       return operand;
     }
     if (!_currentToken.type.isIncrementOperator) {
       return operand;
     }
-    if (operand is FunctionExpressionInvocation) {
+    if (operand is Literal || operand is FunctionExpressionInvocation) {
       reportError7(ParserErrorCode.MISSING_ASSIGNABLE_SELECTOR, []);
     }
     Token operator = andAdvance;
     return new PostfixExpression.full(operand, operator);
   }
 
   /**
    * Parse a prefixed identifier.
+   *
    * <pre>
    * prefixedIdentifier ::=
-   * identifier ('.' identifier)?
+   *     identifier ('.' identifier)?
    * </pre>
+   *
    * @return the prefixed identifier that was parsed
    */
   Identifier parsePrefixedIdentifier() {
     SimpleIdentifier qualifier = parseSimpleIdentifier();
     if (!matches5(TokenType.PERIOD)) {
       return qualifier;
     }
     Token period = andAdvance;
     SimpleIdentifier qualified = parseSimpleIdentifier();
     return new PrefixedIdentifier.full(qualifier, period, qualified);
   }
 
   /**
    * Parse a primary expression.
+   *
    * <pre>
    * primary ::=
-   * thisExpression
-   * | 'super' assignableSelector
-   * | functionExpression
-   * | literal
-   * | identifier
-   * | newExpression
-   * | constObjectExpression
-   * | '(' expression ')'
-   * | argumentDefinitionTest
+   *     thisExpression
+   *   | 'super' assignableSelector
+   *   | functionExpression
+   *   | literal
+   *   | identifier
+   *   | newExpression
+   *   | constObjectExpression
+   *   | '(' expression ')'
+   *   | argumentDefinitionTest
+   *
    * literal ::=
-   * nullLiteral
-   * | booleanLiteral
-   * | numericLiteral
-   * | stringLiteral
-   * | mapLiteral
-   * | listLiteral
+   *     nullLiteral
+   *   | booleanLiteral
+   *   | numericLiteral
+   *   | stringLiteral
+   *   | mapLiteral
+   *   | listLiteral
    * </pre>
+   *
    * @return the primary expression that was parsed
    */
   Expression parsePrimaryExpression() {
     if (matches(Keyword.THIS)) {
       return new ThisExpression.full(andAdvance);
     } else if (matches(Keyword.SUPER)) {
       return parseAssignableSelector(new SuperExpression.full(andAdvance), false);
     } else if (matches(Keyword.NULL)) {
       return new NullLiteral.full(andAdvance);
     } else if (matches(Keyword.FALSE)) {
@@ skipping 53 matching lines @@
       advance();
       return parsePrimaryExpression();
     } else {
       reportError7(ParserErrorCode.MISSING_IDENTIFIER, []);
       return createSyntheticIdentifier();
     }
   }
 
   /**
    * Parse a redirecting constructor invocation.
+   *
    * <pre>
    * redirectingConstructorInvocation ::=
-   * 'this' ('.' identifier)? arguments
+   *     'this' ('.' identifier)? arguments
    * </pre>
+   *
    * @return the redirecting constructor invocation that was parsed
    */
   RedirectingConstructorInvocation parseRedirectingConstructorInvocation() {
     Token keyword = expect(Keyword.THIS);
     Token period = null;
     SimpleIdentifier constructorName = null;
     if (matches5(TokenType.PERIOD)) {
       period = andAdvance;
       constructorName = parseSimpleIdentifier();
     }
     ArgumentList argumentList = parseArgumentList();
     return new RedirectingConstructorInvocation.full(keyword, period, constructorName, argumentList);
   }
 
   /**
    * Parse a relational expression.
+   *
    * <pre>
    * relationalExpression ::=
-   * shiftExpression ('is' '!'? type | 'as' type | relationalOperator shiftExpression)?
-   * | 'super' relationalOperator shiftExpression
+   *     shiftExpression ('is' '!'? type | 'as' type | relationalOperator shiftExpression)?
+   *   | 'super' relationalOperator shiftExpression
    * </pre>
+   *
    * @return the relational expression that was parsed
    */
   Expression parseRelationalExpression() {
     if (matches(Keyword.SUPER) && _currentToken.next.type.isRelationalOperator) {
       Expression expression = new SuperExpression.full(andAdvance);
       Token operator = andAdvance;
       expression = new BinaryExpression.full(expression, operator, parseShiftExpression());
       return expression;
     }
     Expression expression = parseShiftExpression();
     if (matches(Keyword.AS)) {
       Token asOperator = andAdvance;
       expression = new AsExpression.full(expression, asOperator, parseTypeName());
     } else if (matches(Keyword.IS)) {
       Token isOperator = andAdvance;
       Token notOperator = null;
       if (matches5(TokenType.BANG)) {
         notOperator = andAdvance;
       }
       expression = new IsExpression.full(expression, isOperator, notOperator, parseTypeName());
     } else if (_currentToken.type.isRelationalOperator) {
       Token operator = andAdvance;
       expression = new BinaryExpression.full(expression, operator, parseShiftExpression());
     }
     return expression;
   }
 
   /**
    * Parse a rethrow expression.
+   *
    * <pre>
    * rethrowExpression ::=
-   * 'rethrow'
+   *     'rethrow'
    * </pre>
+   *
    * @return the rethrow expression that was parsed
    */
   Expression parseRethrowExpression() => new RethrowExpression.full(expect(Keyword.RETHROW));
 
   /**
    * Parse a return statement.
+   *
    * <pre>
    * returnStatement ::=
-   * 'return' expression? ';'
+   *     'return' expression? ';'
    * </pre>
+   *
    * @return the return statement that was parsed
    */
   Statement parseReturnStatement() {
     Token returnKeyword = expect(Keyword.RETURN);
     if (matches5(TokenType.SEMICOLON)) {
       return new ReturnStatement.full(returnKeyword, null, andAdvance);
     }
     Expression expression = parseExpression2();
     Token semicolon = expect2(TokenType.SEMICOLON);
     return new ReturnStatement.full(returnKeyword, expression, semicolon);
   }
 
   /**
    * Parse a return type.
+   *
    * <pre>
    * returnType ::=
-   * 'void'
-   * | type
+   *     'void'
+   *   | type
    * </pre>
+   *
    * @return the return type that was parsed
    */
   TypeName parseReturnType() {
     if (matches(Keyword.VOID)) {
       return new TypeName.full(new SimpleIdentifier.full(andAdvance), null);
     } else {
       return parseTypeName();
     }
   }
 
   /**
    * Parse a setter.
+   *
    * <pre>
    * setter ::=
-   * setterSignature functionBody?
+   *     setterSignature functionBody?
+   *
    * setterSignature ::=
-   * 'external'? 'static'? returnType? 'set' identifier formalParameterList
+   *     'external'? 'static'? returnType? 'set' identifier formalParameterList
    * </pre>
+   *
    * @param commentAndMetadata the documentation comment and metadata to be associated with the
-   * declaration
+   *          declaration
    * @param externalKeyword the 'external' token
    * @param staticKeyword the static keyword, or `null` if the setter is not static
    * @param the return type that has already been parsed, or `null` if there was no return
-   * type
+   *          type
    * @return the setter that was parsed
    */
   MethodDeclaration parseSetter(CommentAndMetadata commentAndMetadata, Token externalKeyword, Token staticKeyword, TypeName returnType) {
     Token propertyKeyword = expect(Keyword.SET);
     SimpleIdentifier name = parseSimpleIdentifier();
     FormalParameterList parameters = parseFormalParameterList();
     validateFormalParameterList(parameters);
     FunctionBody body = parseFunctionBody(externalKeyword != null || staticKeyword == null, ParserErrorCode.STATIC_SETTER_WITHOUT_BODY, false);
     if (externalKeyword != null && body is! EmptyFunctionBody) {
       reportError7(ParserErrorCode.EXTERNAL_SETTER_WITH_BODY, []);
     }
     return new MethodDeclaration.full(commentAndMetadata.comment, commentAndMetadata.metadata, externalKeyword, staticKeyword, returnType, propertyKeyword, null, name, parameters, body);
   }
 
   /**
    * Parse a shift expression.
+   *
    * <pre>
    * shiftExpression ::=
-   * additiveExpression (shiftOperator additiveExpression)
-   * | 'super' (shiftOperator additiveExpression)+
+   *     additiveExpression (shiftOperator additiveExpression)*
+   *   | 'super' (shiftOperator additiveExpression)+
    * </pre>
+   *
    * @return the shift expression that was parsed
    */
   Expression parseShiftExpression() {
     Expression expression;
     if (matches(Keyword.SUPER) && _currentToken.next.type.isShiftOperator) {
       expression = new SuperExpression.full(andAdvance);
     } else {
       expression = parseAdditiveExpression();
     }
     while (_currentToken.type.isShiftOperator) {
       Token operator = andAdvance;
       expression = new BinaryExpression.full(expression, operator, parseAdditiveExpression());
     }
     return expression;
   }
 
   /**
    * Parse a simple identifier.
+   *
    * <pre>
    * identifier ::=
-   * IDENTIFIER
+   *     IDENTIFIER
    * </pre>
+   *
    * @return the simple identifier that was parsed
    */
   SimpleIdentifier parseSimpleIdentifier() {
     if (matchesIdentifier()) {
       return new SimpleIdentifier.full(andAdvance);
     }
     reportError7(ParserErrorCode.MISSING_IDENTIFIER, []);
     return createSyntheticIdentifier();
   }
 
   /**
    * Parse a statement.
+   *
    * <pre>
    * statement ::=
-   * label* nonLabeledStatement
+   *     label* nonLabeledStatement
    * </pre>
+   *
    * @return the statement that was parsed
    */
   Statement parseStatement2() {
     List<Label> labels = new List<Label>();
     while (matchesIdentifier() && matches4(peek(), TokenType.COLON)) {
       SimpleIdentifier label = parseSimpleIdentifier();
       Token colon = expect2(TokenType.COLON);
       labels.add(new Label.full(label, colon));
     }
     Statement statement = parseNonLabeledStatement();
     if (labels.isEmpty) {
       return statement;
     }
     return new LabeledStatement.full(labels, statement);
   }
 
   /**
    * Parse a list of statements within a switch statement.
+   *
    * <pre>
    * statements ::=
-   * statement
+   *     statement*
    * </pre>
+   *
    * @return the statements that were parsed
    */
   List<Statement> parseStatements2() {
     List<Statement> statements = new List<Statement>();
     Token statementStart = _currentToken;
     while (!matches5(TokenType.EOF) && !matches5(TokenType.CLOSE_CURLY_BRACKET) && !isSwitchMember()) {
       statements.add(parseStatement2());
       if (identical(_currentToken, statementStart)) {
         reportError8(ParserErrorCode.UNEXPECTED_TOKEN, _currentToken, [_currentToken.lexeme]);
         advance();
       }
       statementStart = _currentToken;
     }
     return statements;
   }
 
   /**
    * Parse a string literal that contains interpolations.
+   *
    * @return the string literal that was parsed
    */
   StringInterpolation parseStringInterpolation(Token string) {
     List<InterpolationElement> elements = new List<InterpolationElement>();
     elements.add(new InterpolationString.full(string, computeStringValue(string.lexeme)));
     while (matches5(TokenType.STRING_INTERPOLATION_EXPRESSION) || matches5(TokenType.STRING_INTERPOLATION_IDENTIFIER)) {
       if (matches5(TokenType.STRING_INTERPOLATION_EXPRESSION)) {
         Token openToken = andAdvance;
         Expression expression = parseExpression2();
         Token rightBracket = expect2(TokenType.CLOSE_CURLY_BRACKET);
@@ skipping 11 matching lines @@
       if (matches5(TokenType.STRING)) {
         string = andAdvance;
         elements.add(new InterpolationString.full(string, computeStringValue(string.lexeme)));
       }
     }
     return new StringInterpolation.full(elements);
   }
 
   /**
    * Parse a string literal.
+   *
    * <pre>
    * stringLiteral ::=
-   * MULTI_LINE_STRING+
-   * | SINGLE_LINE_STRING+
+   *     MULTI_LINE_STRING+
+   *   | SINGLE_LINE_STRING+
    * </pre>
+   *
    * @return the string literal that was parsed
    */
   StringLiteral parseStringLiteral() {
     List<StringLiteral> strings = new List<StringLiteral>();
     while (matches5(TokenType.STRING)) {
       Token string = andAdvance;
       if (matches5(TokenType.STRING_INTERPOLATION_EXPRESSION) || matches5(TokenType.STRING_INTERPOLATION_IDENTIFIER)) {
         strings.add(parseStringInterpolation(string));
       } else {
         strings.add(new SimpleStringLiteral.full(string, computeStringValue(string.lexeme)));
       }
     }
     if (strings.length < 1) {
       reportError7(ParserErrorCode.EXPECTED_STRING_LITERAL, []);
       return createSyntheticStringLiteral();
     } else if (strings.length == 1) {
       return strings[0];
     } else {
       return new AdjacentStrings.full(strings);
     }
   }
 
   /**
    * Parse a super constructor invocation.
+   *
    * <pre>
    * superConstructorInvocation ::=
-   * 'super' ('.' identifier)? arguments
+   *     'super' ('.' identifier)? arguments
    * </pre>
+   *
    * @return the super constructor invocation that was parsed
    */
   SuperConstructorInvocation parseSuperConstructorInvocation() {
     Token keyword = expect(Keyword.SUPER);
     Token period = null;
     SimpleIdentifier constructorName = null;
     if (matches5(TokenType.PERIOD)) {
       period = andAdvance;
       constructorName = parseSimpleIdentifier();
     }
     ArgumentList argumentList = parseArgumentList();
     return new SuperConstructorInvocation.full(keyword, period, constructorName, argumentList);
   }
 
   /**
    * Parse a switch statement.
+   *
    * <pre>
    * switchStatement ::=
-   * 'switch' '(' expression ')' '{' switchCase* defaultCase? '}'
+   *     'switch' '(' expression ')' '{' switchCase* defaultCase? '}'
+   *
    * switchCase ::=
-   * label* ('case' expression ':') statements
+   *     label* ('case' expression ':') statements
+   *
    * defaultCase ::=
-   * label* 'default' ':' statements
+   *     label* 'default' ':' statements
    * </pre>
+   *
    * @return the switch statement that was parsed
    */
   SwitchStatement parseSwitchStatement() {
     bool wasInSwitch = _inSwitch;
     _inSwitch = true;
     try {
       Set<String> definedLabels = new Set<String>();
       Token keyword = expect(Keyword.SWITCH);
       Token leftParenthesis = expect2(TokenType.OPEN_PAREN);
       Expression expression = parseExpression2();
@@ skipping 38 matching lines @@
       }
       Token rightBracket = expect2(TokenType.CLOSE_CURLY_BRACKET);
       return new SwitchStatement.full(keyword, leftParenthesis, expression, rightParenthesis, leftBracket, members, rightBracket);
     } finally {
       _inSwitch = wasInSwitch;
     }
   }
 
   /**
    * Parse a throw expression.
+   *
    * <pre>
    * throwExpression ::=
-   * 'throw' expression
+   *     'throw' expression
    * </pre>
+   *
    * @return the throw expression that was parsed
    */
   Expression parseThrowExpression() {
     Token keyword = expect(Keyword.THROW);
     if (matches5(TokenType.SEMICOLON) || matches5(TokenType.CLOSE_PAREN)) {
       reportError8(ParserErrorCode.MISSING_EXPRESSION_IN_THROW, _currentToken, []);
       return new ThrowExpression.full(keyword, createSyntheticIdentifier());
     }
     Expression expression = parseExpression2();
     return new ThrowExpression.full(keyword, expression);
   }
 
   /**
    * Parse a throw expression.
+   *
    * <pre>
    * throwExpressionWithoutCascade ::=
-   * 'throw' expressionWithoutCascade
+   *     'throw' expressionWithoutCascade
    * </pre>
+   *
    * @return the throw expression that was parsed
    */
   Expression parseThrowExpressionWithoutCascade() {
     Token keyword = expect(Keyword.THROW);
     if (matches5(TokenType.SEMICOLON) || matches5(TokenType.CLOSE_PAREN)) {
       reportError8(ParserErrorCode.MISSING_EXPRESSION_IN_THROW, _currentToken, []);
       return new ThrowExpression.full(keyword, createSyntheticIdentifier());
     }
     Expression expression = parseExpressionWithoutCascade();
     return new ThrowExpression.full(keyword, expression);
   }
 
   /**
    * Parse a try statement.
+   *
    * <pre>
    * tryStatement ::=
-   * 'try' block (onPart+ finallyPart? | finallyPart)
+   *     'try' block (onPart+ finallyPart? | finallyPart)
+   *
    * onPart ::=
-   * catchPart block
-   * | 'on' type catchPart? block
+   *     catchPart block
+   *   | 'on' type catchPart? block
+   *
    * catchPart ::=
-   * 'catch' '(' identifier (',' identifier)? ')'
+   *     'catch' '(' identifier (',' identifier)? ')'
+   *
    * finallyPart ::=
-   * 'finally' block
+   *     'finally' block
    * </pre>
+   *
    * @return the try statement that was parsed
    */
   Statement parseTryStatement() {
     Token tryKeyword = expect(Keyword.TRY);
     Block body = parseBlock();
     List<CatchClause> catchClauses = new List<CatchClause>();
     Block finallyClause = null;
     while (matches2(_ON) || matches(Keyword.CATCH)) {
       Token onKeyword = null;
       TypeName exceptionType = null;
@@ skipping 27 matching lines @@
     } else {
       if (catchClauses.isEmpty) {
         reportError7(ParserErrorCode.MISSING_CATCH_OR_FINALLY, []);
       }
     }
     return new TryStatement.full(tryKeyword, body, catchClauses, finallyKeyword, finallyClause);
   }
 
   /**
    * Parse a type alias.
+   *
    * <pre>
    * typeAlias ::=
-   * 'typedef' typeAliasBody
+   *     'typedef' typeAliasBody
+   *
    * typeAliasBody ::=
-   * classTypeAlias
-   * | functionTypeAlias
+   *     classTypeAlias
+   *   | functionTypeAlias
+   *
    * classTypeAlias ::=
-   * identifier typeParameters? '=' 'abstract'? mixinApplication
+   *     identifier typeParameters? '=' 'abstract'? mixinApplication
+   *
    * mixinApplication ::=
-   * qualified withClause implementsClause? ';'
+   *     qualified withClause implementsClause? ';'
+   *
    * functionTypeAlias ::=
-   * functionPrefix typeParameterList? formalParameterList ';'
+   *     functionPrefix typeParameterList? formalParameterList ';'
+   *
    * functionPrefix ::=
-   * returnType? name
+   *     returnType? name
    * </pre>
+   *
    * @param commentAndMetadata the metadata to be associated with the member
    * @return the type alias that was parsed
    */
   TypeAlias parseTypeAlias(CommentAndMetadata commentAndMetadata) {
     Token keyword = expect(Keyword.TYPEDEF);
     if (matchesIdentifier()) {
       Token next = peek();
       if (matches4(next, TokenType.LT)) {
         next = skipTypeParameterList(next);
         if (next != null && matches4(next, TokenType.EQ)) {
           return parseClassTypeAlias(commentAndMetadata, keyword);
         }
       } else if (matches4(next, TokenType.EQ)) {
         return parseClassTypeAlias(commentAndMetadata, keyword);
       }
     }
     return parseFunctionTypeAlias(commentAndMetadata, keyword);
   }
 
   /**
    * Parse a list of type arguments.
+   *
    * <pre>
    * typeArguments ::=
-   * '<' typeList '>'
+   *     '<' typeList '>'
+   *
    * typeList ::=
-   * type (',' type)
+   *     type (',' type)*
    * </pre>
+   *
    * @return the type argument list that was parsed
    */
   TypeArgumentList parseTypeArgumentList() {
     Token leftBracket = expect2(TokenType.LT);
     List<TypeName> arguments = new List<TypeName>();
     arguments.add(parseTypeName());
     while (optional(TokenType.COMMA)) {
       arguments.add(parseTypeName());
     }
     Token rightBracket = expect2(TokenType.GT);
     return new TypeArgumentList.full(leftBracket, arguments, rightBracket);
   }
 
   /**
    * Parse a type name.
+   *
    * <pre>
    * type ::=
-   * qualified typeArguments?
+   *     qualified typeArguments?
    * </pre>
+   *
    * @return the type name that was parsed
    */
   TypeName parseTypeName() {
     Identifier typeName;
     if (matches(Keyword.VAR)) {
       reportError7(ParserErrorCode.VAR_AS_TYPE_NAME, []);
       typeName = new SimpleIdentifier.full(andAdvance);
     } else if (matchesIdentifier()) {
       typeName = parsePrefixedIdentifier();
     } else {
       typeName = createSyntheticIdentifier();
       reportError7(ParserErrorCode.EXPECTED_TYPE_NAME, []);
     }
     TypeArgumentList typeArguments = null;
     if (matches5(TokenType.LT)) {
       typeArguments = parseTypeArgumentList();
     }
     return new TypeName.full(typeName, typeArguments);
   }
 
   /**
    * Parse a type parameter.
+   *
    * <pre>
    * typeParameter ::=
-   * metadata name ('extends' bound)?
+   *     metadata name ('extends' bound)?
    * </pre>
+   *
    * @return the type parameter that was parsed
    */
   TypeParameter parseTypeParameter() {
     CommentAndMetadata commentAndMetadata = parseCommentAndMetadata();
     SimpleIdentifier name = parseSimpleIdentifier();
     if (matches(Keyword.EXTENDS)) {
       Token keyword = andAdvance;
       TypeName bound = parseTypeName();
       return new TypeParameter.full(commentAndMetadata.comment, commentAndMetadata.metadata, name, keyword, bound);
     }
     return new TypeParameter.full(commentAndMetadata.comment, commentAndMetadata.metadata, name, null, null);
   }
 
   /**
    * Parse a list of type parameters.
+   *
    * <pre>
    * typeParameterList ::=
-   * '<' typeParameter (',' typeParameter)* '>'
+   *     '<' typeParameter (',' typeParameter)* '>'
    * </pre>
+   *
    * @return the list of type parameters that were parsed
    */
   TypeParameterList parseTypeParameterList() {
     Token leftBracket = expect2(TokenType.LT);
     List<TypeParameter> typeParameters = new List<TypeParameter>();
     typeParameters.add(parseTypeParameter());
     while (optional(TokenType.COMMA)) {
       typeParameters.add(parseTypeParameter());
     }
     Token rightBracket = expect2(TokenType.GT);
     return new TypeParameterList.full(leftBracket, typeParameters, rightBracket);
   }
 
   /**
    * Parse a unary expression.
+   *
    * <pre>
    * unaryExpression ::=
-   * prefixOperator unaryExpression
-   * | postfixExpression
-   * | unaryOperator 'super'
-   * | '-' 'super'
-   * | incrementOperator assignableExpression
+   *     prefixOperator unaryExpression
+   *   | postfixExpression
+   *   | unaryOperator 'super'
+   *   | '-' 'super'
+   *   | incrementOperator assignableExpression
    * </pre>
+   *
    * @return the unary expression that was parsed
    */
   Expression parseUnaryExpression() {
     if (matches5(TokenType.MINUS) || matches5(TokenType.BANG) || matches5(TokenType.TILDE)) {
       Token operator = andAdvance;
       if (matches(Keyword.SUPER)) {
         if (matches4(peek(), TokenType.OPEN_SQUARE_BRACKET) || matches4(peek(), TokenType.PERIOD)) {
           return new PrefixExpression.full(operator, parseUnaryExpression());
         }
         return new PrefixExpression.full(operator, new SuperExpression.full(andAdvance));
@@ skipping 21 matching lines @@
       return new PrefixExpression.full(operator, parseAssignableExpression(false));
     } else if (matches5(TokenType.PLUS)) {
       reportError7(ParserErrorCode.MISSING_IDENTIFIER, []);
       return createSyntheticIdentifier();
     }
     return parsePostfixExpression();
   }
 
   /**
    * Parse a variable declaration.
+   *
    * <pre>
    * variableDeclaration ::=
-   * identifier ('=' expression)?
+   *     identifier ('=' expression)?
    * </pre>
+   *
    * @return the variable declaration that was parsed
    */
   VariableDeclaration parseVariableDeclaration() {
     CommentAndMetadata commentAndMetadata = parseCommentAndMetadata();
     SimpleIdentifier name = parseSimpleIdentifier();
     Token equals = null;
     Expression initializer = null;
     if (matches5(TokenType.EQ)) {
       equals = andAdvance;
       initializer = parseExpression2();
     }
     return new VariableDeclaration.full(commentAndMetadata.comment, commentAndMetadata.metadata, name, equals, initializer);
   }
 
   /**
    * Parse a variable declaration list.
+   *
    * <pre>
    * variableDeclarationList ::=
-   * finalConstVarOrType variableDeclaration (',' variableDeclaration)
+   *     finalConstVarOrType variableDeclaration (',' variableDeclaration)*
    * </pre>
+   *
    * @param commentAndMetadata the metadata to be associated with the variable declaration list
    * @return the variable declaration list that was parsed
    */
   VariableDeclarationList parseVariableDeclarationList(CommentAndMetadata commentAndMetadata) {
     FinalConstVarOrType holder = parseFinalConstVarOrType(false);
     return parseVariableDeclarationList2(commentAndMetadata, holder.keyword, holder.type);
   }
 
   /**
    * Parse a variable declaration list.
+   *
    * <pre>
    * variableDeclarationList ::=
-   * finalConstVarOrType variableDeclaration (',' variableDeclaration)
+   *     finalConstVarOrType variableDeclaration (',' variableDeclaration)*
    * </pre>
-   * @param commentAndMetadata the metadata to be associated with the variable declaration list, or`null` if there is no attempt at parsing the comment and metadata
+   *
+   * @param commentAndMetadata the metadata to be associated with the variable declaration list, or
+   *          `null` if there is no attempt at parsing the comment and metadata
    * @param keyword the token representing the 'final', 'const' or 'var' keyword, or `null` if
-   * there is no keyword
+   *          there is no keyword
    * @param type the type of the variables in the list
    * @return the variable declaration list that was parsed
    */
   VariableDeclarationList parseVariableDeclarationList2(CommentAndMetadata commentAndMetadata, Token keyword, TypeName type) {
     List<VariableDeclaration> variables = new List<VariableDeclaration>();
     variables.add(parseVariableDeclaration());
     while (matches5(TokenType.COMMA)) {
       advance();
       variables.add(parseVariableDeclaration());
     }
     return new VariableDeclarationList.full(commentAndMetadata != null ? commentAndMetadata.comment : null, commentAndMetadata != null ? commentAndMetadata.metadata : null, keyword, type, variables);
   }
 
   /**
    * Parse a variable declaration statement.
+   *
    * <pre>
    * variableDeclarationStatement ::=
-   * variableDeclarationList ';'
+   *     variableDeclarationList ';'
    * </pre>
+   *
    * @param commentAndMetadata the metadata to be associated with the variable declaration
-   * statement, or `null` if there is no attempt at parsing the comment and metadata
+   *          statement, or `null` if there is no attempt at parsing the comment and metadata
    * @return the variable declaration statement that was parsed
    */
   VariableDeclarationStatement parseVariableDeclarationStatement(CommentAndMetadata commentAndMetadata) {
     VariableDeclarationList variableList = parseVariableDeclarationList(commentAndMetadata);
     Token semicolon = expect2(TokenType.SEMICOLON);
     return new VariableDeclarationStatement.full(variableList, semicolon);
   }
 
   /**
    * Parse a variable declaration statement.
+   *
    * <pre>
    * variableDeclarationStatement ::=
-   * variableDeclarationList ';'
+   *     variableDeclarationList ';'
    * </pre>
+   *
    * @param commentAndMetadata the metadata to be associated with the variable declaration
-   * statement, or `null` if there is no attempt at parsing the comment and metadata
+   *          statement, or `null` if there is no attempt at parsing the comment and metadata
    * @param keyword the token representing the 'final', 'const' or 'var' keyword, or `null` if
-   * there is no keyword
+   *          there is no keyword
    * @param type the type of the variables in the list
    * @return the variable declaration statement that was parsed
    */
   VariableDeclarationStatement parseVariableDeclarationStatement2(CommentAndMetadata commentAndMetadata, Token keyword, TypeName type) {
     VariableDeclarationList variableList = parseVariableDeclarationList2(commentAndMetadata, keyword, type);
     Token semicolon = expect2(TokenType.SEMICOLON);
     return new VariableDeclarationStatement.full(variableList, semicolon);
   }
 
   /**
    * Parse a while statement.
+   *
    * <pre>
    * whileStatement ::=
-   * 'while' '(' expression ')' statement
+   *     'while' '(' expression ')' statement
    * </pre>
+   *
    * @return the while statement that was parsed
    */
   Statement parseWhileStatement() {
     bool wasInLoop = _inLoop;
     _inLoop = true;
     try {
       Token keyword = expect(Keyword.WHILE);
       Token leftParenthesis = expect2(TokenType.OPEN_PAREN);
       Expression condition = parseExpression2();
       Token rightParenthesis = expect2(TokenType.CLOSE_PAREN);
       Statement body = parseStatement2();
       return new WhileStatement.full(keyword, leftParenthesis, condition, rightParenthesis, body);
     } finally {
       _inLoop = wasInLoop;
     }
   }
 
   /**
    * Parse a with clause.
+   *
    * <pre>
    * withClause ::=
-   * 'with' typeName (',' typeName)
+   *     'with' typeName (',' typeName)*
    * </pre>
+   *
    * @return the with clause that was parsed
    */
   WithClause parseWithClause() {
     Token with2 = expect(Keyword.WITH);
     List<TypeName> types = new List<TypeName>();
     types.add(parseTypeName());
     while (optional(TokenType.COMMA)) {
       types.add(parseTypeName());
     }
     return new WithClause.full(with2, types);
   }
 
   /**
-   * Return the token that is immediately after the current token. This is equivalent to[peek].
+   * Return the token that is immediately after the current token. This is equivalent to
+   * [peek].
+   *
    * @return the token that is immediately after the current token
    */
   Token peek() => _currentToken.next;
 
   /**
    * Return the token that is the given distance after the current token.
-   * @param distance the number of tokens to look ahead, where `0` is the current token,`1` is the next token, etc.
+   *
+   * @param distance the number of tokens to look ahead, where `0` is the current token,
+   *          `1` is the next token, etc.
    * @return the token that is the given distance after the current token
    */
   Token peek2(int distance) {
     Token token = _currentToken;
     for (int i = 0; i < distance; i++) {
       token = token.next;
     }
     return token;
   }
 
   /**
    * Report an error with the given error code and arguments.
+   *
    * @param errorCode the error code of the error to be reported
    * @param node the node specifying the location of the error
    * @param arguments the arguments to the error, used to compose the error message
    */
   void reportError(ParserErrorCode errorCode, ASTNode node, List<Object> arguments) {
     _errorListener.onError(new AnalysisError.con2(_source, node.offset, node.length, errorCode, arguments));
   }
 
   /**
    * Report an error with the given error code and arguments.
+   *
    * @param errorCode the error code of the error to be reported
    * @param arguments the arguments to the error, used to compose the error message
    */
   void reportError7(ParserErrorCode errorCode, List<Object> arguments) {
     reportError8(errorCode, _currentToken, arguments);
   }
 
   /**
    * Report an error with the given error code and arguments.
+   *
    * @param errorCode the error code of the error to be reported
    * @param token the token specifying the location of the error
    * @param arguments the arguments to the error, used to compose the error message
    */
   void reportError8(ParserErrorCode errorCode, Token token, List<Object> arguments) {
     _errorListener.onError(new AnalysisError.con2(_source, token.offset, token.length, errorCode, arguments));
   }
 
   /**
    * Parse the 'final', 'const', 'var' or type preceding a variable declaration, starting at the
    * given token, without actually creating a type or changing the current token. Return the token
    * following the type that was parsed, or `null` if the given token is not the first token
    * in a valid type.
+   *
    * <pre>
    * finalConstVarOrType ::=
-   * | 'final' type?
-   * | 'const' type?
-   * | 'var'
-   * | type
+   *   | 'final' type?
+   *   | 'const' type?
+   *   | 'var'
+   *   | type
    * </pre>
+   *
    * @param startToken the token at which parsing is to begin
    * @return the token following the type that was parsed
    */
   Token skipFinalConstVarOrType(Token startToken) {
     if (matches3(startToken, Keyword.FINAL) || matches3(startToken, Keyword.CONST)) {
       Token next = startToken.next;
       if (matchesIdentifier2(next.next) || matches4(next.next, TokenType.LT) || matches3(next.next, Keyword.THIS)) {
         return skipTypeName(next);
       }
     } else if (matches3(startToken, Keyword.VAR)) {
@@ skipping 13 matching lines @@
    * parameter list that was parsed, or `null` if the given token is not the first token in a
    * valid list of formal parameter.
    *
    * Note that unlike other skip methods, this method uses a heuristic. In the worst case, the
    * parameters could be prefixed by metadata, which would require us to be able to skip arbitrary
    * expressions. Rather than duplicate the logic of most of the parse methods we simply look for
    * something that is likely to be a list of parameters and then skip to returning the token after
    * the closing parenthesis.
    *
    * This method must be kept in sync with [parseFormalParameterList].
+   *
    * <pre>
    * formalParameterList ::=
-   * '(' ')'
-   * | '(' normalFormalParameters (',' optionalFormalParameters)? ')'
-   * | '(' optionalFormalParameters ')'
+   *     '(' ')'
+   *   | '(' normalFormalParameters (',' optionalFormalParameters)? ')'
+   *   | '(' optionalFormalParameters ')'
+   *
    * normalFormalParameters ::=
-   * normalFormalParameter (',' normalFormalParameter)
+   *     normalFormalParameter (',' normalFormalParameter)*
+   *
    * optionalFormalParameters ::=
-   * optionalPositionalFormalParameters
-   * | namedFormalParameters
+   *     optionalPositionalFormalParameters
+   *   | namedFormalParameters
+   *
    * optionalPositionalFormalParameters ::=
-   * '\[' defaultFormalParameter (',' defaultFormalParameter)* '\]'
+   *     '[' defaultFormalParameter (',' defaultFormalParameter)* ']'
+   *
    * namedFormalParameters ::=
-   * '{' defaultNamedParameter (',' defaultNamedParameter)* '}'
+   *     '{' defaultNamedParameter (',' defaultNamedParameter)* '}'
    * </pre>
+   *
    * @param startToken the token at which parsing is to begin
    * @return the token following the formal parameter list that was parsed
    */
   Token skipFormalParameterList(Token startToken) {
     if (!matches4(startToken, TokenType.OPEN_PAREN)) {
       return null;
     }
     Token next = startToken.next;
     if (matches4(next, TokenType.CLOSE_PAREN)) {
       return next.next;
@@ skipping 13 matching lines @@
     }
     if (skipSimpleIdentifier(afterType) == null) {
       return null;
     }
     return skipPastMatchingToken(startToken);
   }
 
   /**
    * If the given token is a begin token with an associated end token, then return the token
    * following the end token. Otherwise, return `null`.
+   *
    * @param startToken the token that is assumed to be a being token
    * @return the token following the matching end token
    */
   Token skipPastMatchingToken(Token startToken) {
     if (startToken is! BeginToken) {
       return null;
     }
     Token closeParen = ((startToken as BeginToken)).endToken;
     if (closeParen == null) {
       return null;
     }
     return closeParen.next;
   }
 
   /**
    * Parse a prefixed identifier, starting at the given token, without actually creating a prefixed
    * identifier or changing the current token. Return the token following the prefixed identifier
    * that was parsed, or `null` if the given token is not the first token in a valid prefixed
    * identifier.
    *
    * This method must be kept in sync with [parsePrefixedIdentifier].
+   *
    * <pre>
    * prefixedIdentifier ::=
-   * identifier ('.' identifier)?
+   *     identifier ('.' identifier)?
    * </pre>
+   *
    * @param startToken the token at which parsing is to begin
    * @return the token following the prefixed identifier that was parsed
    */
   Token skipPrefixedIdentifier(Token startToken) {
     Token token = skipSimpleIdentifier(startToken);
     if (token == null) {
       return null;
     } else if (!matches4(token, TokenType.PERIOD)) {
       return token;
     }
     return skipSimpleIdentifier(token.next);
   }
 
   /**
    * Parse a return type, starting at the given token, without actually creating a return type or
-   * changing the current token. Return the token following the return type that was parsed, or`null` if the given token is not the first token in a valid return type.
+   * changing the current token. Return the token following the return type that was parsed, or
+   * `null` if the given token is not the first token in a valid return type.
    *
    * This method must be kept in sync with [parseReturnType].
+   *
    * <pre>
    * returnType ::=
-   * 'void'
-   * | type
+   *     'void'
+   *   | type
    * </pre>
+   *
    * @param startToken the token at which parsing is to begin
    * @return the token following the return type that was parsed
    */
   Token skipReturnType(Token startToken) {
     if (matches3(startToken, Keyword.VOID)) {
       return startToken.next;
     } else {
       return skipTypeName(startToken);
     }
   }
 
   /**
    * Parse a simple identifier, starting at the given token, without actually creating a simple
    * identifier or changing the current token. Return the token following the simple identifier that
    * was parsed, or `null` if the given token is not the first token in a valid simple
    * identifier.
    *
    * This method must be kept in sync with [parseSimpleIdentifier].
+   *
    * <pre>
    * identifier ::=
-   * IDENTIFIER
+   *     IDENTIFIER
    * </pre>
+   *
    * @param startToken the token at which parsing is to begin
    * @return the token following the simple identifier that was parsed
    */
   Token skipSimpleIdentifier(Token startToken) {
     if (matches4(startToken, TokenType.IDENTIFIER) || (matches4(startToken, TokenType.KEYWORD) && ((startToken as KeywordToken)).keyword.isPseudoKeyword)) {
       return startToken.next;
     }
     return null;
   }
 
   /**
    * Parse a string literal that contains interpolations, starting at the given token, without
    * actually creating a string literal or changing the current token. Return the token following
    * the string literal that was parsed, or `null` if the given token is not the first token
    * in a valid string literal.
    *
    * This method must be kept in sync with [parseStringInterpolation].
+   *
    * @param startToken the token at which parsing is to begin
    * @return the string literal that was parsed
    */
   Token skipStringInterpolation(Token startToken) {
     Token token = startToken;
     TokenType type = token.type;
     while (identical(type, TokenType.STRING_INTERPOLATION_EXPRESSION) || identical(type, TokenType.STRING_INTERPOLATION_IDENTIFIER)) {
       if (identical(type, TokenType.STRING_INTERPOLATION_EXPRESSION)) {
         token = token.next;
         type = token.type;
@@ skipping 32 matching lines @@
     }
     return token;
   }
 
   /**
    * Parse a string literal, starting at the given token, without actually creating a string literal
    * or changing the current token. Return the token following the string literal that was parsed,
    * or `null` if the given token is not the first token in a valid string literal.
    *
    * This method must be kept in sync with [parseStringLiteral].
+   *
    * <pre>
    * stringLiteral ::=
-   * MULTI_LINE_STRING+
-   * | SINGLE_LINE_STRING+
+   *     MULTI_LINE_STRING+
+   *   | SINGLE_LINE_STRING+
    * </pre>
+   *
    * @param startToken the token at which parsing is to begin
    * @return the token following the string literal that was parsed
    */
   Token skipStringLiteral(Token startToken) {
     Token token = startToken;
     while (token != null && matches4(token, TokenType.STRING)) {
       token = token.next;
       TokenType type = token.type;
       if (identical(type, TokenType.STRING_INTERPOLATION_EXPRESSION) || identical(type, TokenType.STRING_INTERPOLATION_IDENTIFIER)) {
         token = skipStringInterpolation(token);
       }
     }
     if (identical(token, startToken)) {
       return null;
     }
     return token;
   }
 
   /**
    * Parse a list of type arguments, starting at the given token, without actually creating a type argument list
    * or changing the current token. Return the token following the type argument list that was parsed,
    * or `null` if the given token is not the first token in a valid type argument list.
    *
    * This method must be kept in sync with [parseTypeArgumentList].
+   *
    * <pre>
    * typeArguments ::=
-   * '<' typeList '>'
+   *     '<' typeList '>'
+   *
    * typeList ::=
-   * type (',' type)
+   *     type (',' type)*
    * </pre>
+   *
    * @param startToken the token at which parsing is to begin
    * @return the token following the type argument list that was parsed
    */
   Token skipTypeArgumentList(Token startToken) {
     Token token = startToken;
     if (!matches4(token, TokenType.LT)) {
       return null;
     }
     token = skipTypeName(token.next);
     if (token == null) {
@@ skipping 10 matching lines @@
     } else if (identical(token.type, TokenType.GT_GT)) {
       Token second = new Token(TokenType.GT, token.offset + 1);
       second.setNextWithoutSettingPrevious(token.next);
       return second;
     }
     return null;
   }
 
   /**
    * Parse a type name, starting at the given token, without actually creating a type name or
-   * changing the current token. Return the token following the type name that was parsed, or`null` if the given token is not the first token in a valid type name.
+   * changing the current token. Return the token following the type name that was parsed, or
+   * `null` if the given token is not the first token in a valid type name.
    *
    * This method must be kept in sync with [parseTypeName].
+   *
    * <pre>
    * type ::=
-   * qualified typeArguments?
+   *     qualified typeArguments?
    * </pre>
+   *
    * @param startToken the token at which parsing is to begin
    * @return the token following the type name that was parsed
    */
   Token skipTypeName(Token startToken) {
     Token token = skipPrefixedIdentifier(startToken);
     if (token == null) {
       return null;
     }
     if (matches4(token, TokenType.LT)) {
       token = skipTypeArgumentList(token);
     }
     return token;
   }
 
   /**
    * Parse a list of type parameters, starting at the given token, without actually creating a type
    * parameter list or changing the current token. Return the token following the type parameter
    * list that was parsed, or `null` if the given token is not the first token in a valid type
    * parameter list.
    *
    * This method must be kept in sync with [parseTypeParameterList].
+   *
    * <pre>
    * typeParameterList ::=
-   * '<' typeParameter (',' typeParameter)* '>'
+   *     '<' typeParameter (',' typeParameter)* '>'
    * </pre>
+   *
    * @param startToken the token at which parsing is to begin
    * @return the token following the type parameter list that was parsed
    */
   Token skipTypeParameterList(Token startToken) {
     if (!matches4(startToken, TokenType.LT)) {
       return null;
     }
     int depth = 1;
     Token next = startToken.next;
     while (depth > 0) {
@@ skipping 23 matching lines @@
         depth -= 2;
       }
       next = next.next;
     }
     return next;
   }
 
   /**
    * Translate the characters at the given index in the given string, appending the translated
    * character to the given builder. The index is assumed to be valid.
+   *
    * @param builder the builder to which the translated character is to be appended
    * @param lexeme the string containing the character(s) to be translated
    * @param index the index of the character to be translated
    * @return the index of the next character to be translated
    */
   int translateCharacter(JavaStringBuilder builder, String lexeme, int index) {
     int currentChar = lexeme.codeUnitAt(index);
     if (currentChar != 0x5C) {
       builder.appendChar(currentChar);
       return index + 1;
@@ skipping 85 matching lines @@
         return currentIndex + 4;
       }
     } else {
       builder.appendChar(currentChar);
     }
     return currentIndex + 1;
   }
 
   /**
    * Validate that the given parameter list does not contain any field initializers.
+   *
    * @param parameterList the parameter list to be validated
    */
   void validateFormalParameterList(FormalParameterList parameterList) {
     for (FormalParameter parameter in parameterList.parameters) {
       if (parameter is FieldFormalParameter) {
         reportError(ParserErrorCode.FIELD_INITIALIZER_OUTSIDE_CONSTRUCTOR, ((parameter as FieldFormalParameter)).identifier, []);
       }
     }
   }
 
   /**
    * Validate that the given set of modifiers is appropriate for a class and return the 'abstract'
    * keyword if there is one.
+   *
    * @param modifiers the modifiers being validated
    */
   Token validateModifiersForClass(Modifiers modifiers) {
     validateModifiersForTopLevelDeclaration(modifiers);
     if (modifiers.constKeyword != null) {
       reportError8(ParserErrorCode.CONST_CLASS, modifiers.constKeyword, []);
     }
     if (modifiers.externalKeyword != null) {
       reportError8(ParserErrorCode.EXTERNAL_CLASS, modifiers.externalKeyword, []);
     }
     if (modifiers.finalKeyword != null) {
       reportError8(ParserErrorCode.FINAL_CLASS, modifiers.finalKeyword, []);
     }
     if (modifiers.varKeyword != null) {
       reportError8(ParserErrorCode.VAR_CLASS, modifiers.varKeyword, []);
     }
     return modifiers.abstractKeyword;
   }
 
   /**
    * Validate that the given set of modifiers is appropriate for a constructor and return the
    * 'const' keyword if there is one.
+   *
    * @param modifiers the modifiers being validated
    * @return the 'const' or 'final' keyword associated with the constructor
    */
   Token validateModifiersForConstructor(Modifiers modifiers) {
     if (modifiers.abstractKeyword != null) {
       reportError7(ParserErrorCode.ABSTRACT_CLASS_MEMBER, []);
     }
     if (modifiers.finalKeyword != null) {
       reportError8(ParserErrorCode.FINAL_CONSTRUCTOR, modifiers.finalKeyword, []);
     }
@@ skipping 11 matching lines @@
     }
     if (externalKeyword != null && factoryKeyword != null && factoryKeyword.offset < externalKeyword.offset) {
       reportError8(ParserErrorCode.EXTERNAL_AFTER_FACTORY, externalKeyword, []);
     }
     return constKeyword;
   }
 
   /**
    * Validate that the given set of modifiers is appropriate for a field and return the 'final',
    * 'const' or 'var' keyword if there is one.
+   *
    * @param modifiers the modifiers being validated
    * @return the 'final', 'const' or 'var' keyword associated with the field
    */
   Token validateModifiersForField(Modifiers modifiers) {
     if (modifiers.abstractKeyword != null) {
       reportError7(ParserErrorCode.ABSTRACT_CLASS_MEMBER, []);
     }
     if (modifiers.externalKeyword != null) {
       reportError8(ParserErrorCode.EXTERNAL_FIELD, modifiers.externalKeyword, []);
     }
@@ skipping 21 matching lines @@
       if (staticKeyword != null && finalKeyword.offset < staticKeyword.offset) {
         reportError8(ParserErrorCode.STATIC_AFTER_FINAL, staticKeyword, []);
       }
     } else if (varKeyword != null && staticKeyword != null && varKeyword.offset < staticKeyword.offset) {
       reportError8(ParserErrorCode.STATIC_AFTER_VAR, staticKeyword, []);
     }
     return lexicallyFirst([constKeyword, finalKeyword, varKeyword]);
   }
 
   /**
+   * Validate that the given set of modifiers is appropriate for a local function.
+   *
+   * @param modifiers the modifiers being validated
+   */
+  void validateModifiersForFunctionDeclarationStatement(Modifiers modifiers) {
+    if (modifiers.abstractKeyword != null || modifiers.constKeyword != null || modifiers.externalKeyword != null || modifiers.factoryKeyword != null || modifiers.finalKeyword != null || modifiers.staticKeyword != null || modifiers.varKeyword != null) {
+      reportError7(ParserErrorCode.LOCAL_FUNCTION_DECLARATION_MODIFIER, []);
+    }
+  }
+
+  /**
    * Validate that the given set of modifiers is appropriate for a getter, setter, or method.
+   *
    * @param modifiers the modifiers being validated
    */
   void validateModifiersForGetterOrSetterOrMethod(Modifiers modifiers) {
     if (modifiers.abstractKeyword != null) {
       reportError7(ParserErrorCode.ABSTRACT_CLASS_MEMBER, []);
     }
     if (modifiers.constKeyword != null) {
       reportError8(ParserErrorCode.CONST_METHOD, modifiers.constKeyword, []);
     }
     if (modifiers.factoryKeyword != null) {
       reportError8(ParserErrorCode.NON_CONSTRUCTOR_FACTORY, modifiers.factoryKeyword, []);
     }
     if (modifiers.finalKeyword != null) {
       reportError8(ParserErrorCode.FINAL_METHOD, modifiers.finalKeyword, []);
     }
     if (modifiers.varKeyword != null) {
       reportError8(ParserErrorCode.VAR_RETURN_TYPE, modifiers.varKeyword, []);
     }
     Token externalKeyword = modifiers.externalKeyword;
     Token staticKeyword = modifiers.staticKeyword;
     if (externalKeyword != null && staticKeyword != null && staticKeyword.offset < externalKeyword.offset) {
       reportError8(ParserErrorCode.EXTERNAL_AFTER_STATIC, externalKeyword, []);
     }
   }
 
   /**
    * Validate that the given set of modifiers is appropriate for a getter, setter, or method.
+   *
    * @param modifiers the modifiers being validated
    */
   void validateModifiersForOperator(Modifiers modifiers) {
     if (modifiers.abstractKeyword != null) {
       reportError7(ParserErrorCode.ABSTRACT_CLASS_MEMBER, []);
     }
     if (modifiers.constKeyword != null) {
       reportError8(ParserErrorCode.CONST_METHOD, modifiers.constKeyword, []);
     }
     if (modifiers.factoryKeyword != null) {
       reportError8(ParserErrorCode.NON_CONSTRUCTOR_FACTORY, modifiers.factoryKeyword, []);
     }
     if (modifiers.finalKeyword != null) {
       reportError8(ParserErrorCode.FINAL_METHOD, modifiers.finalKeyword, []);
     }
     if (modifiers.staticKeyword != null) {
       reportError8(ParserErrorCode.STATIC_OPERATOR, modifiers.staticKeyword, []);
     }
     if (modifiers.varKeyword != null) {
       reportError8(ParserErrorCode.VAR_RETURN_TYPE, modifiers.varKeyword, []);
     }
   }
 
   /**
    * Validate that the given set of modifiers is appropriate for a top-level declaration.
+   *
    * @param modifiers the modifiers being validated
    */
   void validateModifiersForTopLevelDeclaration(Modifiers modifiers) {
     if (modifiers.factoryKeyword != null) {
       reportError8(ParserErrorCode.FACTORY_TOP_LEVEL_DECLARATION, modifiers.factoryKeyword, []);
     }
     if (modifiers.staticKeyword != null) {
       reportError8(ParserErrorCode.STATIC_TOP_LEVEL_DECLARATION, modifiers.staticKeyword, []);
     }
   }
 
   /**
    * Validate that the given set of modifiers is appropriate for a top-level function.
+   *
    * @param modifiers the modifiers being validated
    */
   void validateModifiersForTopLevelFunction(Modifiers modifiers) {
     validateModifiersForTopLevelDeclaration(modifiers);
     if (modifiers.abstractKeyword != null) {
       reportError7(ParserErrorCode.ABSTRACT_TOP_LEVEL_FUNCTION, []);
     }
     if (modifiers.constKeyword != null) {
       reportError8(ParserErrorCode.CONST_CLASS, modifiers.constKeyword, []);
     }
     if (modifiers.finalKeyword != null) {
       reportError8(ParserErrorCode.FINAL_CLASS, modifiers.finalKeyword, []);
     }
     if (modifiers.varKeyword != null) {
       reportError8(ParserErrorCode.VAR_RETURN_TYPE, modifiers.varKeyword, []);
     }
   }
 
   /**
    * Validate that the given set of modifiers is appropriate for a field and return the 'final',
    * 'const' or 'var' keyword if there is one.
+   *
    * @param modifiers the modifiers being validated
    * @return the 'final', 'const' or 'var' keyword associated with the field
    */
   Token validateModifiersForTopLevelVariable(Modifiers modifiers) {
     validateModifiersForTopLevelDeclaration(modifiers);
     if (modifiers.abstractKeyword != null) {
       reportError7(ParserErrorCode.ABSTRACT_TOP_LEVEL_VARIABLE, []);
     }
     if (modifiers.externalKeyword != null) {
       reportError8(ParserErrorCode.EXTERNAL_FIELD, modifiers.externalKeyword, []);
@@ skipping 12 matching lines @@
       if (varKeyword != null) {
         reportError8(ParserErrorCode.FINAL_AND_VAR, varKeyword, []);
       }
     }
     return lexicallyFirst([constKeyword, finalKeyword, varKeyword]);
   }
 
   /**
    * Validate that the given set of modifiers is appropriate for a class and return the 'abstract'
    * keyword if there is one.
+   *
    * @param modifiers the modifiers being validated
    */
   void validateModifiersForTypedef(Modifiers modifiers) {
     validateModifiersForTopLevelDeclaration(modifiers);
     if (modifiers.abstractKeyword != null) {
       reportError8(ParserErrorCode.ABSTRACT_TYPEDEF, modifiers.abstractKeyword, []);
     }
     if (modifiers.constKeyword != null) {
       reportError8(ParserErrorCode.CONST_TYPEDEF, modifiers.constKeyword, []);
     }
     if (modifiers.externalKeyword != null) {
       reportError8(ParserErrorCode.EXTERNAL_TYPEDEF, modifiers.externalKeyword, []);
     }
     if (modifiers.finalKeyword != null) {
       reportError8(ParserErrorCode.FINAL_TYPEDEF, modifiers.finalKeyword, []);
     }
     if (modifiers.varKeyword != null) {
       reportError8(ParserErrorCode.VAR_TYPEDEF, modifiers.varKeyword, []);
     }
   }
 }
-class KeywordToken_10 extends KeywordToken {
-  KeywordToken_10(Keyword arg0, int arg1) : super(arg0, arg1);
+class KeywordToken_11 extends KeywordToken {
+  KeywordToken_11(Keyword arg0, int arg1) : super(arg0, arg1);
   int get length => 0;
 }
-class AnalysisErrorListener_11 implements AnalysisErrorListener {
+class AnalysisErrorListener_12 implements AnalysisErrorListener {
   List<bool> errorFound;
-  AnalysisErrorListener_11(this.errorFound);
+  AnalysisErrorListener_12(this.errorFound);
   void onError(AnalysisError error) {
     errorFound[0] = true;
   }
 }
 /**
  * The enumeration `ParserErrorCode` defines the error codes used for errors detected by the
  * parser. The convention for this class is for the name of the error code to indicate the problem
  * that caused the error to be generated and for the error message to explain what is wrong and,
  * when appropriate, how the problem can be corrected.
+ *
  * @coverage dart.engine.parser
  */
 class ParserErrorCode implements Comparable<ParserErrorCode>, ErrorCode {
   static final ParserErrorCode ABSTRACT_CLASS_MEMBER = new ParserErrorCode.con2('ABSTRACT_CLASS_MEMBER', 0, "Members of classes cannot be declared to be 'abstract'");
   static final ParserErrorCode ABSTRACT_STATIC_METHOD = new ParserErrorCode.con2('ABSTRACT_STATIC_METHOD', 1, "Static methods cannot be declared to be 'abstract'");
   static final ParserErrorCode ABSTRACT_TOP_LEVEL_FUNCTION = new ParserErrorCode.con2('ABSTRACT_TOP_LEVEL_FUNCTION', 2, "Top-level functions cannot be declared to be 'abstract'");
   static final ParserErrorCode ABSTRACT_TOP_LEVEL_VARIABLE = new ParserErrorCode.con2('ABSTRACT_TOP_LEVEL_VARIABLE', 3, "Top-level variables cannot be declared to be 'abstract'");
   static final ParserErrorCode ABSTRACT_TYPEDEF = new ParserErrorCode.con2('ABSTRACT_TYPEDEF', 4, "Type aliases cannot be declared to be 'abstract'");
   static final ParserErrorCode BREAK_OUTSIDE_OF_LOOP = new ParserErrorCode.con2('BREAK_OUTSIDE_OF_LOOP', 5, "A break statement cannot be used outside of a loop or switch statement");
   static final ParserErrorCode CONST_AND_FINAL = new ParserErrorCode.con2('CONST_AND_FINAL', 6, "Members cannot be declared to be both 'const' and 'final'");
@@ skipping 44 matching lines @@
   static final ParserErrorCode IMPLEMENTS_BEFORE_WITH = new ParserErrorCode.con2('IMPLEMENTS_BEFORE_WITH', 51, "The with clause must be before the implements clause");
   static final ParserErrorCode IMPORT_DIRECTIVE_AFTER_PART_DIRECTIVE = new ParserErrorCode.con2('IMPORT_DIRECTIVE_AFTER_PART_DIRECTIVE', 52, "Import directives must preceed part directives");
   static final ParserErrorCode INITIALIZED_VARIABLE_IN_FOR_EACH = new ParserErrorCode.con2('INITIALIZED_VARIABLE_IN_FOR_EACH', 53, "The loop variable in a for-each loop cannot be initialized");
   static final ParserErrorCode INVALID_CODE_POINT = new ParserErrorCode.con2('INVALID_CODE_POINT', 54, "The escape sequence '%s' is not a valid code point");
   static final ParserErrorCode INVALID_COMMENT_REFERENCE = new ParserErrorCode.con2('INVALID_COMMENT_REFERENCE', 55, "Comment references should contain a possibly prefixed identifier and can start with 'new', but should not contain anything else");
   static final ParserErrorCode INVALID_HEX_ESCAPE = new ParserErrorCode.con2('INVALID_HEX_ESCAPE', 56, "An escape sequence starting with '\\x' must be followed by 2 hexidecimal digits");
   static final ParserErrorCode INVALID_OPERATOR = new ParserErrorCode.con2('INVALID_OPERATOR', 57, "The string '%s' is not a valid operator");
   static final ParserErrorCode INVALID_OPERATOR_FOR_SUPER = new ParserErrorCode.con2('INVALID_OPERATOR_FOR_SUPER', 58, "The operator '%s' cannot be used with 'super'");
   static final ParserErrorCode INVALID_UNICODE_ESCAPE = new ParserErrorCode.con2('INVALID_UNICODE_ESCAPE', 59, "An escape sequence starting with '\\u' must be followed by 4 hexidecimal digits or from 1 to 6 digits between '{' and '}'");
   static final ParserErrorCode LIBRARY_DIRECTIVE_NOT_FIRST = new ParserErrorCode.con2('LIBRARY_DIRECTIVE_NOT_FIRST', 60, "The library directive must appear before all other directives");
-  static final ParserErrorCode MISSING_ASSIGNABLE_SELECTOR = new ParserErrorCode.con2('MISSING_ASSIGNABLE_SELECTOR', 61, "Missing selector such as \".<identifier>\" or \"[0]\"");
-  static final ParserErrorCode MISSING_CATCH_OR_FINALLY = new ParserErrorCode.con2('MISSING_CATCH_OR_FINALLY', 62, "A try statement must have either a catch or finally clause");
-  static final ParserErrorCode MISSING_CLASS_BODY = new ParserErrorCode.con2('MISSING_CLASS_BODY', 63, "A class definition must have a body, even if it is empty");
-  static final ParserErrorCode MISSING_CLOSING_PARENTHESIS = new ParserErrorCode.con2('MISSING_CLOSING_PARENTHESIS', 64, "The closing parenthesis is missing");
-  static final ParserErrorCode MISSING_CONST_FINAL_VAR_OR_TYPE = new ParserErrorCode.con2('MISSING_CONST_FINAL_VAR_OR_TYPE', 65, "Variables must be declared using the keywords 'const', 'final', 'var' or a type name");
-  static final ParserErrorCode MISSING_EXPRESSION_IN_THROW = new ParserErrorCode.con2('MISSING_EXPRESSION_IN_THROW', 66, "Throw expressions must compute the object to be thrown");
-  static final ParserErrorCode MISSING_FUNCTION_BODY = new ParserErrorCode.con2('MISSING_FUNCTION_BODY', 67, "A function body must be provided");
-  static final ParserErrorCode MISSING_FUNCTION_PARAMETERS = new ParserErrorCode.con2('MISSING_FUNCTION_PARAMETERS', 68, "Functions must have an explicit list of parameters");
-  static final ParserErrorCode MISSING_IDENTIFIER = new ParserErrorCode.con2('MISSING_IDENTIFIER', 69, "Expected an identifier");
-  static final ParserErrorCode MISSING_KEYWORD_OPERATOR = new ParserErrorCode.con2('MISSING_KEYWORD_OPERATOR', 70, "Operator declarations must be preceeded by the keyword 'operator'");
-  static final ParserErrorCode MISSING_NAME_IN_LIBRARY_DIRECTIVE = new ParserErrorCode.con2('MISSING_NAME_IN_LIBRARY_DIRECTIVE', 71, "Library directives must include a library name");
-  static final ParserErrorCode MISSING_NAME_IN_PART_OF_DIRECTIVE = new ParserErrorCode.con2('MISSING_NAME_IN_PART_OF_DIRECTIVE', 72, "Library directives must include a library name");
-  static final ParserErrorCode MISSING_STATEMENT = new ParserErrorCode.con2('MISSING_STATEMENT', 73, "Expected a statement");
-  static final ParserErrorCode MISSING_TERMINATOR_FOR_PARAMETER_GROUP = new ParserErrorCode.con2('MISSING_TERMINATOR_FOR_PARAMETER_GROUP', 74, "There is no '%s' to close the parameter group");
-  static final ParserErrorCode MISSING_TYPEDEF_PARAMETERS = new ParserErrorCode.con2('MISSING_TYPEDEF_PARAMETERS', 75, "Type aliases for functions must have an explicit list of parameters");
-  static final ParserErrorCode MISSING_VARIABLE_IN_FOR_EACH = new ParserErrorCode.con2('MISSING_VARIABLE_IN_FOR_EACH', 76, "A loop variable must be declared in a for-each loop before the 'in', but none were found");
-  static final ParserErrorCode MIXED_PARAMETER_GROUPS = new ParserErrorCode.con2('MIXED_PARAMETER_GROUPS', 77, "Cannot have both positional and named parameters in a single parameter list");
-  static final ParserErrorCode MULTIPLE_EXTENDS_CLAUSES = new ParserErrorCode.con2('MULTIPLE_EXTENDS_CLAUSES', 78, "Each class definition can have at most one extends clause");
-  static final ParserErrorCode MULTIPLE_IMPLEMENTS_CLAUSES = new ParserErrorCode.con2('MULTIPLE_IMPLEMENTS_CLAUSES', 79, "Each class definition can have at most one implements clause");
-  static final ParserErrorCode MULTIPLE_LIBRARY_DIRECTIVES = new ParserErrorCode.con2('MULTIPLE_LIBRARY_DIRECTIVES', 80, "Only one library directive may be declared in a file");
-  static final ParserErrorCode MULTIPLE_NAMED_PARAMETER_GROUPS = new ParserErrorCode.con2('MULTIPLE_NAMED_PARAMETER_GROUPS', 81, "Cannot have multiple groups of named parameters in a single parameter list");
-  static final ParserErrorCode MULTIPLE_PART_OF_DIRECTIVES = new ParserErrorCode.con2('MULTIPLE_PART_OF_DIRECTIVES', 82, "Only one part-of directive may be declared in a file");
-  static final ParserErrorCode MULTIPLE_POSITIONAL_PARAMETER_GROUPS = new ParserErrorCode.con2('MULTIPLE_POSITIONAL_PARAMETER_GROUPS', 83, "Cannot have multiple groups of positional parameters in a single parameter list");
-  static final ParserErrorCode MULTIPLE_VARIABLES_IN_FOR_EACH = new ParserErrorCode.con2('MULTIPLE_VARIABLES_IN_FOR_EACH', 84, "A single loop variable must be declared in a for-each loop before the 'in', but %s were found");
-  static final ParserErrorCode MULTIPLE_WITH_CLAUSES = new ParserErrorCode.con2('MULTIPLE_WITH_CLAUSES', 85, "Each class definition can have at most one with clause");
-  static final ParserErrorCode NAMED_FUNCTION_EXPRESSION = new ParserErrorCode.con2('NAMED_FUNCTION_EXPRESSION', 86, "Function expressions cannot be named");
-  static final ParserErrorCode NAMED_PARAMETER_OUTSIDE_GROUP = new ParserErrorCode.con2('NAMED_PARAMETER_OUTSIDE_GROUP', 87, "Named parameters must be enclosed in curly braces ('{' and '}')");
-  static final ParserErrorCode NATIVE_FUNCTION_BODY_IN_NON_SDK_CODE = new ParserErrorCode.con2('NATIVE_FUNCTION_BODY_IN_NON_SDK_CODE', 88, "Native functions can only be declared in the SDK and code that is loaded through native extensions");
-  static final ParserErrorCode NON_CONSTRUCTOR_FACTORY = new ParserErrorCode.con2('NON_CONSTRUCTOR_FACTORY', 89, "Only constructors can be declared to be a 'factory'");
-  static final ParserErrorCode NON_IDENTIFIER_LIBRARY_NAME = new ParserErrorCode.con2('NON_IDENTIFIER_LIBRARY_NAME', 90, "The name of a library must be an identifier");
-  static final ParserErrorCode NON_PART_OF_DIRECTIVE_IN_PART = new ParserErrorCode.con2('NON_PART_OF_DIRECTIVE_IN_PART', 91, "The part-of directive must be the only directive in a part");
-  static final ParserErrorCode NON_USER_DEFINABLE_OPERATOR = new ParserErrorCode.con2('NON_USER_DEFINABLE_OPERATOR', 92, "The operator '%s' is not user definable");
-  static final ParserErrorCode POSITIONAL_AFTER_NAMED_ARGUMENT = new ParserErrorCode.con2('POSITIONAL_AFTER_NAMED_ARGUMENT', 93, "Positional arguments must occur before named arguments");
-  static final ParserErrorCode POSITIONAL_PARAMETER_OUTSIDE_GROUP = new ParserErrorCode.con2('POSITIONAL_PARAMETER_OUTSIDE_GROUP', 94, "Positional parameters must be enclosed in square brackets ('[' and ']')");
-  static final ParserErrorCode STATIC_AFTER_CONST = new ParserErrorCode.con2('STATIC_AFTER_CONST', 95, "The modifier 'static' should be before the modifier 'const'");
-  static final ParserErrorCode STATIC_AFTER_FINAL = new ParserErrorCode.con2('STATIC_AFTER_FINAL', 96, "The modifier 'static' should be before the modifier 'final'");
-  static final ParserErrorCode STATIC_AFTER_VAR = new ParserErrorCode.con2('STATIC_AFTER_VAR', 97, "The modifier 'static' should be before the modifier 'var'");
-  static final ParserErrorCode STATIC_CONSTRUCTOR = new ParserErrorCode.con2('STATIC_CONSTRUCTOR', 98, "Constructors cannot be static");
-  static final ParserErrorCode STATIC_GETTER_WITHOUT_BODY = new ParserErrorCode.con2('STATIC_GETTER_WITHOUT_BODY', 99, "A 'static' getter must have a body");
-  static final ParserErrorCode STATIC_OPERATOR = new ParserErrorCode.con2('STATIC_OPERATOR', 100, "Operators cannot be static");
-  static final ParserErrorCode STATIC_SETTER_WITHOUT_BODY = new ParserErrorCode.con2('STATIC_SETTER_WITHOUT_BODY', 101, "A 'static' setter must have a body");
-  static final ParserErrorCode STATIC_TOP_LEVEL_DECLARATION = new ParserErrorCode.con2('STATIC_TOP_LEVEL_DECLARATION', 102, "Top-level declarations cannot be declared to be 'static'");
-  static final ParserErrorCode SWITCH_HAS_CASE_AFTER_DEFAULT_CASE = new ParserErrorCode.con2('SWITCH_HAS_CASE_AFTER_DEFAULT_CASE', 103, "The 'default' case should be the last case in a switch statement");
-  static final ParserErrorCode SWITCH_HAS_MULTIPLE_DEFAULT_CASES = new ParserErrorCode.con2('SWITCH_HAS_MULTIPLE_DEFAULT_CASES', 104, "The 'default' case can only be declared once");
-  static final ParserErrorCode TOP_LEVEL_OPERATOR = new ParserErrorCode.con2('TOP_LEVEL_OPERATOR', 105, "Operators must be declared within a class");
-  static final ParserErrorCode UNEXPECTED_TERMINATOR_FOR_PARAMETER_GROUP = new ParserErrorCode.con2('UNEXPECTED_TERMINATOR_FOR_PARAMETER_GROUP', 106, "There is no '%s' to open a parameter group");
-  static final ParserErrorCode UNEXPECTED_TOKEN = new ParserErrorCode.con2('UNEXPECTED_TOKEN', 107, "Unexpected token '%s'");
-  static final ParserErrorCode WITH_BEFORE_EXTENDS = new ParserErrorCode.con2('WITH_BEFORE_EXTENDS', 108, "The extends clause must be before the with clause");
-  static final ParserErrorCode WITH_WITHOUT_EXTENDS = new ParserErrorCode.con2('WITH_WITHOUT_EXTENDS', 109, "The with clause cannot be used without an extends clause");
-  static final ParserErrorCode WRONG_SEPARATOR_FOR_NAMED_PARAMETER = new ParserErrorCode.con2('WRONG_SEPARATOR_FOR_NAMED_PARAMETER', 110, "The default value of a named parameter should be preceeded by ':'");
-  static final ParserErrorCode WRONG_SEPARATOR_FOR_POSITIONAL_PARAMETER = new ParserErrorCode.con2('WRONG_SEPARATOR_FOR_POSITIONAL_PARAMETER', 111, "The default value of a positional parameter should be preceeded by '='");
-  static final ParserErrorCode WRONG_TERMINATOR_FOR_PARAMETER_GROUP = new ParserErrorCode.con2('WRONG_TERMINATOR_FOR_PARAMETER_GROUP', 112, "Expected '%s' to close parameter group");
-  static final ParserErrorCode VAR_AS_TYPE_NAME = new ParserErrorCode.con2('VAR_AS_TYPE_NAME', 113, "The keyword 'var' cannot be used as a type name");
-  static final ParserErrorCode VAR_CLASS = new ParserErrorCode.con2('VAR_CLASS', 114, "Classes cannot be declared to be 'var'");
-  static final ParserErrorCode VAR_RETURN_TYPE = new ParserErrorCode.con2('VAR_RETURN_TYPE', 115, "The return type cannot be 'var'");
-  static final ParserErrorCode VAR_TYPEDEF = new ParserErrorCode.con2('VAR_TYPEDEF', 116, "Type aliases cannot be declared to be 'var'");
-  static final ParserErrorCode VOID_PARAMETER = new ParserErrorCode.con2('VOID_PARAMETER', 117, "Parameters cannot have a type of 'void'");
-  static final ParserErrorCode VOID_VARIABLE = new ParserErrorCode.con2('VOID_VARIABLE', 118, "Variables cannot have a type of 'void'");
-  static final List<ParserErrorCode> values = [ABSTRACT_CLASS_MEMBER, ABSTRACT_STATIC_METHOD, ABSTRACT_TOP_LEVEL_FUNCTION, ABSTRACT_TOP_LEVEL_VARIABLE, ABSTRACT_TYPEDEF, BREAK_OUTSIDE_OF_LOOP, CONST_AND_FINAL, CONST_AND_VAR, CONST_CLASS, CONST_CONSTRUCTOR_WITH_BODY, CONST_FACTORY, CONST_METHOD, CONST_TYPEDEF, CONSTRUCTOR_WITH_RETURN_TYPE, CONTINUE_OUTSIDE_OF_LOOP, CONTINUE_WITHOUT_LABEL_IN_CASE, DEPRECATED_ARGUMENT_DEFINITION_TEST, DIRECTIVE_AFTER_DECLARATION, DUPLICATE_LABEL_IN_SWITCH_STATEMENT, DUPLICATED_MODIFIER, EXPECTED_CASE_OR_DEFAULT, EXPECTED_CLASS_MEMBER, EXPECTED_EXECUTABLE, EXPECTED_LIST_OR_MAP_LITERAL, EXPECTED_STRING_LITERAL, EXPECTED_TOKEN, EXPECTED_TWO_MAP_TYPE_ARGUMENTS, EXPECTED_TYPE_NAME, EXPORT_DIRECTIVE_AFTER_PART_DIRECTIVE, EXTERNAL_AFTER_CONST, EXTERNAL_AFTER_FACTORY, EXTERNAL_AFTER_STATIC, EXTERNAL_CLASS, EXTERNAL_CONSTRUCTOR_WITH_BODY, EXTERNAL_FIELD, EXTERNAL_GETTER_WITH_BODY, EXTERNAL_METHOD_WITH_BODY, EXTERNAL_OPERATOR_WITH_BODY, EXTERNAL_SETTER_WITH_BODY, EXTERNAL_TYPEDEF, FACTORY_TOP_LEVEL_DECLARATION, FACTORY_WITHOUT_BODY, FIELD_INITIALIZER_OUTSIDE_CONSTRUCTOR, FINAL_AND_VAR, FINAL_CLASS, FINAL_CONSTRUCTOR, FINAL_METHOD, FINAL_TYPEDEF, GETTER_WITH_PARAMETERS, ILLEGAL_ASSIGNMENT_TO_NON_ASSIGNABLE, IMPLEMENTS_BEFORE_EXTENDS, IMPLEMENTS_BEFORE_WITH, IMPORT_DIRECTIVE_AFTER_PART_DIRECTIVE, INITIALIZED_VARIABLE_IN_FOR_EACH, INVALID_CODE_POINT, INVALID_COMMENT_REFERENCE, INVALID_HEX_ESCAPE, INVALID_OPERATOR, INVALID_OPERATOR_FOR_SUPER, INVALID_UNICODE_ESCAPE, LIBRARY_DIRECTIVE_NOT_FIRST, MISSING_ASSIGNABLE_SELECTOR, MISSING_CATCH_OR_FINALLY, MISSING_CLASS_BODY, MISSING_CLOSING_PARENTHESIS, MISSING_CONST_FINAL_VAR_OR_TYPE, MISSING_EXPRESSION_IN_THROW, MISSING_FUNCTION_BODY, MISSING_FUNCTION_PARAMETERS, MISSING_IDENTIFIER, MISSING_KEYWORD_OPERATOR, MISSING_NAME_IN_LIBRARY_DIRECTIVE, MISSING_NAME_IN_PART_OF_DIRECTIVE, MISSING_STATEMENT, MISSING_TERMINATOR_FOR_PARAMETER_GROUP, MISSING_TYPEDEF_PARAMETERS, MISSING_VARIABLE_IN_FOR_EACH, MIXED_PARAMETER_GROUPS, MULTIPLE_EXTENDS_CLAUSES, MULTIPLE_IMPLEMENTS_CLAUSES, MULTIPLE_LIBRARY_DIRECTIVES, MULTIPLE_NAMED_PARAMETER_GROUPS, MULTIPLE_PART_OF_DIRECTIVES, MULTIPLE_POSITIONAL_PARAMETER_GROUPS, MULTIPLE_VARIABLES_IN_FOR_EACH, MULTIPLE_WITH_CLAUSES, NAMED_FUNCTION_EXPRESSION, NAMED_PARAMETER_OUTSIDE_GROUP, NATIVE_FUNCTION_BODY_IN_NON_SDK_CODE, NON_CONSTRUCTOR_FACTORY, NON_IDENTIFIER_LIBRARY_NAME, NON_PART_OF_DIRECTIVE_IN_PART, NON_USER_DEFINABLE_OPERATOR, POSITIONAL_AFTER_NAMED_ARGUMENT, POSITIONAL_PARAMETER_OUTSIDE_GROUP, STATIC_AFTER_CONST, STATIC_AFTER_FINAL, STATIC_AFTER_VAR, STATIC_CONSTRUCTOR, STATIC_GETTER_WITHOUT_BODY, STATIC_OPERATOR, STATIC_SETTER_WITHOUT_BODY, STATIC_TOP_LEVEL_DECLARATION, SWITCH_HAS_CASE_AFTER_DEFAULT_CASE, SWITCH_HAS_MULTIPLE_DEFAULT_CASES, TOP_LEVEL_OPERATOR, UNEXPECTED_TERMINATOR_FOR_PARAMETER_GROUP, UNEXPECTED_TOKEN, WITH_BEFORE_EXTENDS, WITH_WITHOUT_EXTENDS, WRONG_SEPARATOR_FOR_NAMED_PARAMETER, WRONG_SEPARATOR_FOR_POSITIONAL_PARAMETER, WRONG_TERMINATOR_FOR_PARAMETER_GROUP, VAR_AS_TYPE_NAME, VAR_CLASS, VAR_RETURN_TYPE, VAR_TYPEDEF, VOID_PARAMETER, VOID_VARIABLE];
+  static final ParserErrorCode LOCAL_FUNCTION_DECLARATION_MODIFIER = new ParserErrorCode.con2('LOCAL_FUNCTION_DECLARATION_MODIFIER', 61, "Local function declarations cannot specify any modifier");
+  static final ParserErrorCode MISSING_ASSIGNABLE_SELECTOR = new ParserErrorCode.con2('MISSING_ASSIGNABLE_SELECTOR', 62, "Missing selector such as \".<identifier>\" or \"[0]\"");
+  static final ParserErrorCode MISSING_CATCH_OR_FINALLY = new ParserErrorCode.con2('MISSING_CATCH_OR_FINALLY', 63, "A try statement must have either a catch or finally clause");
+  static final ParserErrorCode MISSING_CLASS_BODY = new ParserErrorCode.con2('MISSING_CLASS_BODY', 64, "A class definition must have a body, even if it is empty");
+  static final ParserErrorCode MISSING_CLOSING_PARENTHESIS = new ParserErrorCode.con2('MISSING_CLOSING_PARENTHESIS', 65, "The closing parenthesis is missing");
+  static final ParserErrorCode MISSING_CONST_FINAL_VAR_OR_TYPE = new ParserErrorCode.con2('MISSING_CONST_FINAL_VAR_OR_TYPE', 66, "Variables must be declared using the keywords 'const', 'final', 'var' or a type name");
+  static final ParserErrorCode MISSING_EXPRESSION_IN_THROW = new ParserErrorCode.con2('MISSING_EXPRESSION_IN_THROW', 67, "Throw expressions must compute the object to be thrown");
+  static final ParserErrorCode MISSING_FUNCTION_BODY = new ParserErrorCode.con2('MISSING_FUNCTION_BODY', 68, "A function body must be provided");
+  static final ParserErrorCode MISSING_FUNCTION_PARAMETERS = new ParserErrorCode.con2('MISSING_FUNCTION_PARAMETERS', 69, "Functions must have an explicit list of parameters");
+  static final ParserErrorCode MISSING_IDENTIFIER = new ParserErrorCode.con2('MISSING_IDENTIFIER', 70, "Expected an identifier");
+  static final ParserErrorCode MISSING_KEYWORD_OPERATOR = new ParserErrorCode.con2('MISSING_KEYWORD_OPERATOR', 71, "Operator declarations must be preceeded by the keyword 'operator'");
+  static final ParserErrorCode MISSING_NAME_IN_LIBRARY_DIRECTIVE = new ParserErrorCode.con2('MISSING_NAME_IN_LIBRARY_DIRECTIVE', 72, "Library directives must include a library name");
+  static final ParserErrorCode MISSING_NAME_IN_PART_OF_DIRECTIVE = new ParserErrorCode.con2('MISSING_NAME_IN_PART_OF_DIRECTIVE', 73, "Library directives must include a library name");
+  static final ParserErrorCode MISSING_STATEMENT = new ParserErrorCode.con2('MISSING_STATEMENT', 74, "Expected a statement");
+  static final ParserErrorCode MISSING_TERMINATOR_FOR_PARAMETER_GROUP = new ParserErrorCode.con2('MISSING_TERMINATOR_FOR_PARAMETER_GROUP', 75, "There is no '%s' to close the parameter group");
+  static final ParserErrorCode MISSING_TYPEDEF_PARAMETERS = new ParserErrorCode.con2('MISSING_TYPEDEF_PARAMETERS', 76, "Type aliases for functions must have an explicit list of parameters");
+  static final ParserErrorCode MISSING_VARIABLE_IN_FOR_EACH = new ParserErrorCode.con2('MISSING_VARIABLE_IN_FOR_EACH', 77, "A loop variable must be declared in a for-each loop before the 'in', but none were found");
+  static final ParserErrorCode MIXED_PARAMETER_GROUPS = new ParserErrorCode.con2('MIXED_PARAMETER_GROUPS', 78, "Cannot have both positional and named parameters in a single parameter list");
+  static final ParserErrorCode MULTIPLE_EXTENDS_CLAUSES = new ParserErrorCode.con2('MULTIPLE_EXTENDS_CLAUSES', 79, "Each class definition can have at most one extends clause");
+  static final ParserErrorCode MULTIPLE_IMPLEMENTS_CLAUSES = new ParserErrorCode.con2('MULTIPLE_IMPLEMENTS_CLAUSES', 80, "Each class definition can have at most one implements clause");
+  static final ParserErrorCode MULTIPLE_LIBRARY_DIRECTIVES = new ParserErrorCode.con2('MULTIPLE_LIBRARY_DIRECTIVES', 81, "Only one library directive may be declared in a file");
+  static final ParserErrorCode MULTIPLE_NAMED_PARAMETER_GROUPS = new ParserErrorCode.con2('MULTIPLE_NAMED_PARAMETER_GROUPS', 82, "Cannot have multiple groups of named parameters in a single parameter list");
+  static final ParserErrorCode MULTIPLE_PART_OF_DIRECTIVES = new ParserErrorCode.con2('MULTIPLE_PART_OF_DIRECTIVES', 83, "Only one part-of directive may be declared in a file");
+  static final ParserErrorCode MULTIPLE_POSITIONAL_PARAMETER_GROUPS = new ParserErrorCode.con2('MULTIPLE_POSITIONAL_PARAMETER_GROUPS', 84, "Cannot have multiple groups of positional parameters in a single parameter list");
+  static final ParserErrorCode MULTIPLE_VARIABLES_IN_FOR_EACH = new ParserErrorCode.con2('MULTIPLE_VARIABLES_IN_FOR_EACH', 85, "A single loop variable must be declared in a for-each loop before the 'in', but %s were found");
+  static final ParserErrorCode MULTIPLE_WITH_CLAUSES = new ParserErrorCode.con2('MULTIPLE_WITH_CLAUSES', 86, "Each class definition can have at most one with clause");
+  static final ParserErrorCode NAMED_FUNCTION_EXPRESSION = new ParserErrorCode.con2('NAMED_FUNCTION_EXPRESSION', 87, "Function expressions cannot be named");
+  static final ParserErrorCode NAMED_PARAMETER_OUTSIDE_GROUP = new ParserErrorCode.con2('NAMED_PARAMETER_OUTSIDE_GROUP', 88, "Named parameters must be enclosed in curly braces ('{' and '}')");
+  static final ParserErrorCode NATIVE_FUNCTION_BODY_IN_NON_SDK_CODE = new ParserErrorCode.con2('NATIVE_FUNCTION_BODY_IN_NON_SDK_CODE', 89, "Native functions can only be declared in the SDK and code that is loaded through native extensions");
+  static final ParserErrorCode NON_CONSTRUCTOR_FACTORY = new ParserErrorCode.con2('NON_CONSTRUCTOR_FACTORY', 90, "Only constructors can be declared to be a 'factory'");
+  static final ParserErrorCode NON_IDENTIFIER_LIBRARY_NAME = new ParserErrorCode.con2('NON_IDENTIFIER_LIBRARY_NAME', 91, "The name of a library must be an identifier");
+  static final ParserErrorCode NON_PART_OF_DIRECTIVE_IN_PART = new ParserErrorCode.con2('NON_PART_OF_DIRECTIVE_IN_PART', 92, "The part-of directive must be the only directive in a part");
+  static final ParserErrorCode NON_USER_DEFINABLE_OPERATOR = new ParserErrorCode.con2('NON_USER_DEFINABLE_OPERATOR', 93, "The operator '%s' is not user definable");
+  static final ParserErrorCode NORMAL_BEFORE_OPTIONAL_PARAMETERS = new ParserErrorCode.con2('NORMAL_BEFORE_OPTIONAL_PARAMETERS', 94, "Normal parameters must occur before optional parameters");
+  static final ParserErrorCode POSITIONAL_AFTER_NAMED_ARGUMENT = new ParserErrorCode.con2('POSITIONAL_AFTER_NAMED_ARGUMENT', 95, "Positional arguments must occur before named arguments");
+  static final ParserErrorCode POSITIONAL_PARAMETER_OUTSIDE_GROUP = new ParserErrorCode.con2('POSITIONAL_PARAMETER_OUTSIDE_GROUP', 96, "Positional parameters must be enclosed in square brackets ('[' and ']')");
+  static final ParserErrorCode STATIC_AFTER_CONST = new ParserErrorCode.con2('STATIC_AFTER_CONST', 97, "The modifier 'static' should be before the modifier 'const'");
+  static final ParserErrorCode STATIC_AFTER_FINAL = new ParserErrorCode.con2('STATIC_AFTER_FINAL', 98, "The modifier 'static' should be before the modifier 'final'");
+  static final ParserErrorCode STATIC_AFTER_VAR = new ParserErrorCode.con2('STATIC_AFTER_VAR', 99, "The modifier 'static' should be before the modifier 'var'");
+  static final ParserErrorCode STATIC_CONSTRUCTOR = new ParserErrorCode.con2('STATIC_CONSTRUCTOR', 100, "Constructors cannot be static");
+  static final ParserErrorCode STATIC_GETTER_WITHOUT_BODY = new ParserErrorCode.con2('STATIC_GETTER_WITHOUT_BODY', 101, "A 'static' getter must have a body");
+  static final ParserErrorCode STATIC_OPERATOR = new ParserErrorCode.con2('STATIC_OPERATOR', 102, "Operators cannot be static");
+  static final ParserErrorCode STATIC_SETTER_WITHOUT_BODY = new ParserErrorCode.con2('STATIC_SETTER_WITHOUT_BODY', 103, "A 'static' setter must have a body");
+  static final ParserErrorCode STATIC_TOP_LEVEL_DECLARATION = new ParserErrorCode.con2('STATIC_TOP_LEVEL_DECLARATION', 104, "Top-level declarations cannot be declared to be 'static'");
+  static final ParserErrorCode SWITCH_HAS_CASE_AFTER_DEFAULT_CASE = new ParserErrorCode.con2('SWITCH_HAS_CASE_AFTER_DEFAULT_CASE', 105, "The 'default' case should be the last case in a switch statement");
+  static final ParserErrorCode SWITCH_HAS_MULTIPLE_DEFAULT_CASES = new ParserErrorCode.con2('SWITCH_HAS_MULTIPLE_DEFAULT_CASES', 106, "The 'default' case can only be declared once");
+  static final ParserErrorCode TOP_LEVEL_OPERATOR = new ParserErrorCode.con2('TOP_LEVEL_OPERATOR', 107, "Operators must be declared within a class");
+  static final ParserErrorCode UNEXPECTED_TERMINATOR_FOR_PARAMETER_GROUP = new ParserErrorCode.con2('UNEXPECTED_TERMINATOR_FOR_PARAMETER_GROUP', 108, "There is no '%s' to open a parameter group");
+  static final ParserErrorCode UNEXPECTED_TOKEN = new ParserErrorCode.con2('UNEXPECTED_TOKEN', 109, "Unexpected token '%s'");
+  static final ParserErrorCode WITH_BEFORE_EXTENDS = new ParserErrorCode.con2('WITH_BEFORE_EXTENDS', 110, "The extends clause must be before the with clause");
+  static final ParserErrorCode WITH_WITHOUT_EXTENDS = new ParserErrorCode.con2('WITH_WITHOUT_EXTENDS', 111, "The with clause cannot be used without an extends clause");
+  static final ParserErrorCode WRONG_SEPARATOR_FOR_NAMED_PARAMETER = new ParserErrorCode.con2('WRONG_SEPARATOR_FOR_NAMED_PARAMETER', 112, "The default value of a named parameter should be preceeded by ':'");
+  static final ParserErrorCode WRONG_SEPARATOR_FOR_POSITIONAL_PARAMETER = new ParserErrorCode.con2('WRONG_SEPARATOR_FOR_POSITIONAL_PARAMETER', 113, "The default value of a positional parameter should be preceeded by '='");
+  static final ParserErrorCode WRONG_TERMINATOR_FOR_PARAMETER_GROUP = new ParserErrorCode.con2('WRONG_TERMINATOR_FOR_PARAMETER_GROUP', 114, "Expected '%s' to close parameter group");
+  static final ParserErrorCode VAR_AS_TYPE_NAME = new ParserErrorCode.con2('VAR_AS_TYPE_NAME', 115, "The keyword 'var' cannot be used as a type name");
+  static final ParserErrorCode VAR_CLASS = new ParserErrorCode.con2('VAR_CLASS', 116, "Classes cannot be declared to be 'var'");
+  static final ParserErrorCode VAR_RETURN_TYPE = new ParserErrorCode.con2('VAR_RETURN_TYPE', 117, "The return type cannot be 'var'");
+  static final ParserErrorCode VAR_TYPEDEF = new ParserErrorCode.con2('VAR_TYPEDEF', 118, "Type aliases cannot be declared to be 'var'");
+  static final ParserErrorCode VOID_PARAMETER = new ParserErrorCode.con2('VOID_PARAMETER', 119, "Parameters cannot have a type of 'void'");
+  static final ParserErrorCode VOID_VARIABLE = new ParserErrorCode.con2('VOID_VARIABLE', 120, "Variables cannot have a type of 'void'");
+  static final List<ParserErrorCode> values = [ABSTRACT_CLASS_MEMBER, ABSTRACT_STATIC_METHOD, ABSTRACT_TOP_LEVEL_FUNCTION, ABSTRACT_TOP_LEVEL_VARIABLE, ABSTRACT_TYPEDEF, BREAK_OUTSIDE_OF_LOOP, CONST_AND_FINAL, CONST_AND_VAR, CONST_CLASS, CONST_CONSTRUCTOR_WITH_BODY, CONST_FACTORY, CONST_METHOD, CONST_TYPEDEF, CONSTRUCTOR_WITH_RETURN_TYPE, CONTINUE_OUTSIDE_OF_LOOP, CONTINUE_WITHOUT_LABEL_IN_CASE, DEPRECATED_ARGUMENT_DEFINITION_TEST, DIRECTIVE_AFTER_DECLARATION, DUPLICATE_LABEL_IN_SWITCH_STATEMENT, DUPLICATED_MODIFIER, EXPECTED_CASE_OR_DEFAULT, EXPECTED_CLASS_MEMBER, EXPECTED_EXECUTABLE, EXPECTED_LIST_OR_MAP_LITERAL, EXPECTED_STRING_LITERAL, EXPECTED_TOKEN, EXPECTED_TWO_MAP_TYPE_ARGUMENTS, EXPECTED_TYPE_NAME, EXPORT_DIRECTIVE_AFTER_PART_DIRECTIVE, EXTERNAL_AFTER_CONST, EXTERNAL_AFTER_FACTORY, EXTERNAL_AFTER_STATIC, EXTERNAL_CLASS, EXTERNAL_CONSTRUCTOR_WITH_BODY, EXTERNAL_FIELD, EXTERNAL_GETTER_WITH_BODY, EXTERNAL_METHOD_WITH_BODY, EXTERNAL_OPERATOR_WITH_BODY, EXTERNAL_SETTER_WITH_BODY, EXTERNAL_TYPEDEF, FACTORY_TOP_LEVEL_DECLARATION, FACTORY_WITHOUT_BODY, FIELD_INITIALIZER_OUTSIDE_CONSTRUCTOR, FINAL_AND_VAR, FINAL_CLASS, FINAL_CONSTRUCTOR, FINAL_METHOD, FINAL_TYPEDEF, GETTER_WITH_PARAMETERS, ILLEGAL_ASSIGNMENT_TO_NON_ASSIGNABLE, IMPLEMENTS_BEFORE_EXTENDS, IMPLEMENTS_BEFORE_WITH, IMPORT_DIRECTIVE_AFTER_PART_DIRECTIVE, INITIALIZED_VARIABLE_IN_FOR_EACH, INVALID_CODE_POINT, INVALID_COMMENT_REFERENCE, INVALID_HEX_ESCAPE, INVALID_OPERATOR, INVALID_OPERATOR_FOR_SUPER, INVALID_UNICODE_ESCAPE, LIBRARY_DIRECTIVE_NOT_FIRST, LOCAL_FUNCTION_DECLARATION_MODIFIER, MISSING_ASSIGNABLE_SELECTOR, MISSING_CATCH_OR_FINALLY, MISSING_CLASS_BODY, MISSING_CLOSING_PARENTHESIS, MISSING_CONST_FINAL_VAR_OR_TYPE, MISSING_EXPRESSION_IN_THROW, MISSING_FUNCTION_BODY, MISSING_FUNCTION_PARAMETERS, MISSING_IDENTIFIER, MISSING_KEYWORD_OPERATOR, MISSING_NAME_IN_LIBRARY_DIRECTIVE, MISSING_NAME_IN_PART_OF_DIRECTIVE, MISSING_STATEMENT, MISSING_TERMINATOR_FOR_PARAMETER_GROUP, MISSING_TYPEDEF_PARAMETERS, MISSING_VARIABLE_IN_FOR_EACH, MIXED_PARAMETER_GROUPS, MULTIPLE_EXTENDS_CLAUSES, MULTIPLE_IMPLEMENTS_CLAUSES, MULTIPLE_LIBRARY_DIRECTIVES, MULTIPLE_NAMED_PARAMETER_GROUPS, MULTIPLE_PART_OF_DIRECTIVES, MULTIPLE_POSITIONAL_PARAMETER_GROUPS, MULTIPLE_VARIABLES_IN_FOR_EACH, MULTIPLE_WITH_CLAUSES, NAMED_FUNCTION_EXPRESSION, NAMED_PARAMETER_OUTSIDE_GROUP, NATIVE_FUNCTION_BODY_IN_NON_SDK_CODE, NON_CONSTRUCTOR_FACTORY, NON_IDENTIFIER_LIBRARY_NAME, NON_PART_OF_DIRECTIVE_IN_PART, NON_USER_DEFINABLE_OPERATOR, NORMAL_BEFORE_OPTIONAL_PARAMETERS, POSITIONAL_AFTER_NAMED_ARGUMENT, POSITIONAL_PARAMETER_OUTSIDE_GROUP, STATIC_AFTER_CONST, STATIC_AFTER_FINAL, STATIC_AFTER_VAR, STATIC_CONSTRUCTOR, STATIC_GETTER_WITHOUT_BODY, STATIC_OPERATOR, STATIC_SETTER_WITHOUT_BODY, STATIC_TOP_LEVEL_DECLARATION, SWITCH_HAS_CASE_AFTER_DEFAULT_CASE, SWITCH_HAS_MULTIPLE_DEFAULT_CASES, TOP_LEVEL_OPERATOR, UNEXPECTED_TERMINATOR_FOR_PARAMETER_GROUP, UNEXPECTED_TOKEN, WITH_BEFORE_EXTENDS, WITH_WITHOUT_EXTENDS, WRONG_SEPARATOR_FOR_NAMED_PARAMETER, WRONG_SEPARATOR_FOR_POSITIONAL_PARAMETER, WRONG_TERMINATOR_FOR_PARAMETER_GROUP, VAR_AS_TYPE_NAME, VAR_CLASS, VAR_RETURN_TYPE, VAR_TYPEDEF, VOID_PARAMETER, VOID_VARIABLE];
 
   /// The name of this enum constant, as declared in the enum declaration.
   final String name;
 
   /// The position in the enum declaration.
   final int ordinal;
 
   /**
    * The severity of this error.
    */
   ErrorSeverity _severity;
 
   /**
    * The message template used to create the message to be displayed for this error.
    */
   String _message;
 
   /**
    * Initialize a newly created error code to have the given severity and message.
+   *
    * @param severity the severity of the error
    * @param message the message template used to create the message to be displayed for the error
    */
   ParserErrorCode.con1(this.name, this.ordinal, ErrorSeverity severity2, String message2) {
     _jtd_constructor_311_impl(severity2, message2);
   }
   _jtd_constructor_311_impl(ErrorSeverity severity2, String message2) {
     this._severity = severity2;
     this._message = message2;
   }
 
   /**
    * Initialize a newly created error code to have the given message and a severity of ERROR.
+   *
    * @param message the message template used to create the message to be displayed for the error
    */
   ParserErrorCode.con2(this.name, this.ordinal, String message) {
     _jtd_constructor_312_impl(message);
   }
   _jtd_constructor_312_impl(String message) {
     _jtd_constructor_311_impl(ErrorSeverity.ERROR, message);
   }
   ErrorSeverity get errorSeverity => _severity;
   String get message => _message;
@@ skipping 11 matching lines @@
   /**
    * The writer to which the source is to be written.
    */
   PrintWriter _writer;
   int _indentLevel = 0;
   String _indentString = "";
 
   /**
    * Initialize a newly created visitor to write source code representing the visited nodes to the
    * given writer.
+   *
    * @param writer the writer to which the source is to be written
    */
   ToFormattedSourceVisitor(PrintWriter writer) {
     this._writer = writer;
   }
   Object visitAdjacentStrings(AdjacentStrings node) {
     visitList5(node.strings, " ");
     return null;
   }
   Object visitAnnotation(Annotation node) {
@@ skipping 744 matching lines @@
   void nl() {
     _writer.print("\n");
   }
   void nl2() {
     nl();
     indent();
   }
 
   /**
    * Safely visit the given node.
+   *
    * @param node the node to be visited
    */
   void visit(ASTNode node) {
     if (node != null) {
       node.accept(this);
     }
   }
 
   /**
    * Safely visit the given node, printing the suffix after the node if it is non-<code>null</code>.
+   *
    * @param suffix the suffix to be printed if there is a node to visit
    * @param node the node to be visited
    */
   void visit6(ASTNode node, String suffix) {
     if (node != null) {
       node.accept(this);
       _writer.print(suffix);
     }
   }
 
   /**
    * Safely visit the given node, printing the prefix before the node if it is non-<code>null</code>
    * .
+   *
    * @param prefix the prefix to be printed if there is a node to visit
    * @param node the node to be visited
    */
   void visit7(String prefix, ASTNode node) {
     if (node != null) {
       _writer.print(prefix);
       node.accept(this);
     }
   }
 
   /**
    * Safely visit the given node, printing the suffix after the node if it is non-<code>null</code>.
+   *
    * @param suffix the suffix to be printed if there is a node to visit
    * @param node the node to be visited
    */
   void visit8(Token token, String suffix) {
     if (token != null) {
       _writer.print(token.lexeme);
       _writer.print(suffix);
     }
   }
 
   /**
    * Print a list of nodes without any separation.
+   *
    * @param nodes the nodes to be printed
    * @param separator the separator to be printed between adjacent nodes
    */
   void visitList(NodeList<ASTNode> nodes) {
     visitList5(nodes, "");
   }
 
   /**
    * Print a list of nodes, separated by the given separator.
+   *
    * @param nodes the nodes to be printed
    * @param separator the separator to be printed between adjacent nodes
    */
   void visitList5(NodeList<ASTNode> nodes, String separator) {
     if (nodes != null) {
       int size = nodes.length;
       for (int i = 0; i < size; i++) {
         if ("\n" == separator) {
           _writer.print("\n");
           indent();
         } else if (i > 0) {
           _writer.print(separator);
         }
         nodes[i].accept(this);
       }
     }
   }
 
   /**
    * Print a list of nodes, separated by the given separator.
+   *
    * @param nodes the nodes to be printed
    * @param separator the separator to be printed between adjacent nodes
    * @param suffix the suffix to be printed if the list is not empty
    */
   void visitList6(NodeList<ASTNode> nodes, String separator, String suffix) {
     if (nodes != null) {
       int size = nodes.length;
       if (size > 0) {
         for (int i = 0; i < size; i++) {
           if (i > 0) {
             _writer.print(separator);
           }
           nodes[i].accept(this);
         }
         _writer.print(suffix);
       }
     }
   }
 
   /**
    * Print a list of nodes, separated by the given separator.
+   *
    * @param prefix the prefix to be printed if the list is not empty
    * @param nodes the nodes to be printed
    * @param separator the separator to be printed between adjacent nodes
    */
   void visitList7(String prefix, NodeList<ASTNode> nodes, String separator) {
     if (nodes != null) {
       int size = nodes.length;
       if (size > 0) {
         _writer.print(prefix);
         for (int i = 0; i < size; i++) {
           if (i > 0) {
             _writer.print(separator);
           }
           nodes[i].accept(this);
         }
       }
     }
   }
 }