New Analysis Engine 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 {@code CommentAndMetadata} implement a simple data-holder for a method
  * that needs to return multiple values.
  * @coverage dart.engine.parser
@@ skipping 242 matching lines @@
    */
   bool _inLoop = false;
   /**
    * A flag indicating whether the parser is currently in a switch statement.
    */
   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
    */
   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) {
-    _currentToken = token;
-    return parseCompilationUnit2();
+    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 {@code null} if the tokens do not represent a
    * recognizable expression
    */
   Expression parseExpression(Token token) {
-    _currentToken = token;
-    return parseExpression2();
+    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 {@code null} if the tokens do not represent a
    * recognizable statement
    */
   Statement parseStatement(Token token) {
-    _currentToken = token;
-    return parseStatement2();
+    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 {@code null} if the tokens do not represent a
    * recognizable sequence of statements
    */
   List<Statement> parseStatements(Token token) {
-    _currentToken = token;
-    return parseStatements2();
+    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;
   }
@@ skipping 49 matching lines @@
     int index = start;
     while (index < end) {
       index = translateCharacter(builder, lexeme, index);
     }
     return builder.toString();
   }
   /**
    * Create a synthetic identifier.
    * @return the synthetic identifier that was created
    */
-  SimpleIdentifier createSyntheticIdentifier() => new SimpleIdentifier.full(createSyntheticToken(TokenType.IDENTIFIER));
+  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(createSyntheticToken(TokenType.STRING), "");
+  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_11(keyword, _currentToken.offset);
   /**
    * Create a synthetic token with the given type.
    * @return the synthetic token that was created
    */
-  Token createSyntheticToken(TokenType type) => new StringToken(type, "", _currentToken.offset);
+  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
    * assignableSelector ::=
    * '[' expression ']'
    * | '.' identifier
@@ skipping 125 matching lines @@
       return true;
     }
     Token token = skipTypeName(_currentToken);
     if (token == null) {
       return false;
     }
     token = skipSimpleIdentifier(token);
     if (token == null) {
       return false;
     }
-    TokenType type21 = token.type;
-    return identical(type21, TokenType.EQ) || identical(type21, TokenType.COMMA) || identical(type21, TokenType.SEMICOLON) || matches3(token, Keyword.IN);
+    TokenType type26 = token.type;
+    return identical(type26, TokenType.EQ) || identical(type26, TokenType.COMMA) || identical(type26, TokenType.SEMICOLON) || matches3(token, Keyword.IN);
+  }
+  /**
+   * Return {@code 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 {@code 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 {@code true} if the current token appears to be the beginning of a switch member.
    * @return {@code 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;
     }
@@ skipping 42 matching lines @@
    * @param keyword the keyword that is being tested for
    * @return {@code true} if the given token matches the given keyword
    */
   bool matches3(Token token, Keyword keyword38) => identical(token.type, TokenType.KEYWORD) && identical(((token as KeywordToken)).keyword, keyword38);
   /**
    * Return {@code 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 {@code true} if the given token has the given type
    */
-  bool matches4(Token token, TokenType type31) => identical(token.type, type31);
+  bool matches4(Token token, TokenType type40) => identical(token.type, type40);
   /**
    * Return {@code 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 {@code true} will be returned.
    * @param type the type of token that can optionally appear in the current location
    * @return {@code true} if the current token has the given type
    */
-  bool matches5(TokenType type32) {
+  bool matches5(TokenType type41) {
     TokenType currentType = _currentToken.type;
-    if (currentType != type32) {
-      if (identical(type32, TokenType.GT)) {
+    if (currentType != type41) {
+      if (identical(type41, TokenType.GT)) {
         if (identical(currentType, TokenType.GT_GT)) {
           int offset6 = _currentToken.offset;
           Token first = new Token(TokenType.GT, offset6);
           Token second = new Token(TokenType.GT, offset6 + 1);
           second.setNext(_currentToken.next);
           first.setNext(second);
           _currentToken.previous.setNext(first);
           _currentToken = first;
           return true;
         } else if (identical(currentType, TokenType.GT_EQ)) {
@@ skipping 80 matching lines @@
     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;
@@ skipping 402 matching lines @@
       reportError5(ParserErrorCode.WITH_WITHOUT_EXTENDS, withClause.withKeyword, []);
     }
     Token leftBracket = null;
     List<ClassMember> members = null;
     Token rightBracket = null;
     if (matches5(TokenType.OPEN_CURLY_BRACKET)) {
       leftBracket = expect2(TokenType.OPEN_CURLY_BRACKET);
       members = parseClassMembers(className, ((leftBracket as BeginToken)).endToken != null);
       rightBracket = expect2(TokenType.CLOSE_CURLY_BRACKET);
     } else {
-      leftBracket = createSyntheticToken(TokenType.OPEN_CURLY_BRACKET);
-      rightBracket = createSyntheticToken(TokenType.CLOSE_CURLY_BRACKET);
+      leftBracket = createSyntheticToken2(TokenType.OPEN_CURLY_BRACKET);
+      rightBracket = createSyntheticToken2(TokenType.CLOSE_CURLY_BRACKET);
       reportError4(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
    * </pre>
    * @param className the name of the class containing the member being parsed
    * @return the class member that was parsed
    */
   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())) {
         validateModifiersForGetterOrSetterOrMethod(modifiers);
         return parseSetter(commentAndMetadata, modifiers.externalKeyword, modifiers.staticKeyword, returnType);
-      } else if (matches(Keyword.OPERATOR) && peek().isOperator()) {
+      } else if (matches(Keyword.OPERATOR) && isOperator(peek())) {
         validateModifiersForOperator(modifiers);
         return parseOperator(commentAndMetadata, modifiers.externalKeyword, returnType);
       } else if (matchesIdentifier() && matchesAny(peek(), [TokenType.OPEN_PAREN, TokenType.OPEN_CURLY_BRACKET, TokenType.FUNCTION])) {
         validateModifiersForGetterOrSetterOrMethod(modifiers);
         return parseMethodDeclaration(commentAndMetadata, modifiers.externalKeyword, modifiers.staticKeyword, returnType);
       } else {
         if (matchesIdentifier()) {
           if (matchesAny(peek(), [TokenType.EQ, TokenType.COMMA, TokenType.SEMICOLON])) {
             reportError(ParserErrorCode.VOID_VARIABLE, returnType, []);
             return parseInitializedIdentifierList(commentAndMetadata, modifiers.staticKeyword, validateModifiersForField(modifiers), returnType);
           }
         }
+        if (isOperator(peek())) {
+          validateModifiersForOperator(modifiers);
+          return parseOperator(commentAndMetadata, modifiers.externalKeyword, returnType);
+        }
+        reportError5(ParserErrorCode.EXPECTED_EXECUTABLE, _currentToken, []);
         return null;
       }
     } else if (matches(Keyword.GET) && matchesIdentifier2(peek())) {
       validateModifiersForGetterOrSetterOrMethod(modifiers);
       return parseGetter(commentAndMetadata, modifiers.externalKeyword, modifiers.staticKeyword, null);
     } else if (matches(Keyword.SET) && matchesIdentifier2(peek())) {
       validateModifiersForGetterOrSetterOrMethod(modifiers);
       return parseSetter(commentAndMetadata, modifiers.externalKeyword, modifiers.staticKeyword, null);
-    } else if (matches(Keyword.OPERATOR) && peek().isOperator() && matches4(peek2(2), TokenType.OPEN_PAREN)) {
+    } else if (matches(Keyword.OPERATOR) && isOperator(peek())) {
       validateModifiersForOperator(modifiers);
       return parseOperator(commentAndMetadata, modifiers.externalKeyword, null);
     } else if (!matchesIdentifier()) {
+      if (isOperator(peek())) {
+        validateModifiersForOperator(modifiers);
+        return parseOperator(commentAndMetadata, modifiers.externalKeyword, null);
+      }
+      reportError5(ParserErrorCode.EXPECTED_CLASS_MEMBER, _currentToken, []);
       return null;
     } else if (matches4(peek(), TokenType.PERIOD) && matchesIdentifier2(peek2(2)) && matches4(peek2(3), TokenType.OPEN_PAREN)) {
       return parseConstructor(commentAndMetadata, modifiers.externalKeyword, validateModifiersForConstructor(modifiers), modifiers.factoryKeyword, parseSimpleIdentifier(), andAdvance, parseSimpleIdentifier(), parseFormalParameterList());
     } else if (matches4(peek(), TokenType.OPEN_PAREN)) {
       SimpleIdentifier methodName = parseSimpleIdentifier();
       FormalParameterList parameters = parseFormalParameterList();
       if (matches5(TokenType.COLON) || modifiers.factoryKeyword != null || methodName.name == className) {
         return parseConstructor(commentAndMetadata, modifiers.externalKeyword, validateModifiersForConstructor(modifiers), modifiers.factoryKeyword, methodName, null, null, parameters);
       }
       validateModifiersForGetterOrSetterOrMethod(modifiers);
       validateFormalParameterList(parameters);
       return parseMethodDeclaration2(commentAndMetadata, modifiers.externalKeyword, modifiers.staticKeyword, null, methodName, parameters);
     } else if (matchesAny(peek(), [TokenType.EQ, TokenType.COMMA, TokenType.SEMICOLON])) {
       return parseInitializedIdentifierList(commentAndMetadata, modifiers.staticKeyword, validateModifiersForField(modifiers), null);
     }
     TypeName type = parseTypeName();
     if (matches(Keyword.GET) && matchesIdentifier2(peek())) {
       validateModifiersForGetterOrSetterOrMethod(modifiers);
       return parseGetter(commentAndMetadata, modifiers.externalKeyword, modifiers.staticKeyword, type);
     } else if (matches(Keyword.SET) && matchesIdentifier2(peek())) {
       validateModifiersForGetterOrSetterOrMethod(modifiers);
       return parseSetter(commentAndMetadata, modifiers.externalKeyword, modifiers.staticKeyword, type);
-    } else if (matches(Keyword.OPERATOR) && peek().isOperator() && matches4(peek2(2), TokenType.OPEN_PAREN)) {
+    } else if (matches(Keyword.OPERATOR) && isOperator(peek())) {
       validateModifiersForOperator(modifiers);
       return parseOperator(commentAndMetadata, modifiers.externalKeyword, type);
     } else if (!matchesIdentifier()) {
+      if (matches5(TokenType.CLOSE_CURLY_BRACKET)) {
+        return parseInitializedIdentifierList(commentAndMetadata, modifiers.staticKeyword, validateModifiersForField(modifiers), type);
+      }
+      if (isOperator(peek())) {
+        validateModifiersForOperator(modifiers);
+        return parseOperator(commentAndMetadata, modifiers.externalKeyword, type);
+      }
+      reportError5(ParserErrorCode.EXPECTED_CLASS_MEMBER, _currentToken, []);
+      return null;
     } else if (matches4(peek(), TokenType.OPEN_PAREN)) {
       validateModifiersForGetterOrSetterOrMethod(modifiers);
       return parseMethodDeclaration(commentAndMetadata, modifiers.externalKeyword, modifiers.staticKeyword, type);
     }
     return parseInitializedIdentifierList(commentAndMetadata, modifiers.staticKeyword, validateModifiersForField(modifiers), type);
   }
   /**
    * Parse a list of class members.
    * <pre>
    * classMembers ::=
@@ skipping 42 matching lines @@
     TypeParameterList typeParameters = null;
     if (matches5(TokenType.LT)) {
       typeParameters = parseTypeParameterList();
     }
     Token equals = expect2(TokenType.EQ);
     Token abstractKeyword = null;
     if (matches(Keyword.ABSTRACT)) {
       abstractKeyword = andAdvance;
     }
     TypeName superclass = parseTypeName();
-    WithClause withClause = parseWithClause();
+    WithClause withClause = null;
+    if (matches(Keyword.WITH)) {
+      withClause = parseWithClause();
+    }
     ImplementsClause implementsClause = null;
     if (matches(Keyword.IMPLEMENTS)) {
       implementsClause = parseImplementsClause();
     }
     Token semicolon = expect2(TokenType.SEMICOLON);
     return new ClassTypeAlias.full(commentAndMetadata.comment, commentAndMetadata.metadata, keyword, name, typeParameters, equals, abstractKeyword, superclass, withClause, implementsClause, semicolon);
   }
   /**
    * Parse a list of combinators in a directive.
    * <pre>
@@ skipping 49 matching lines @@
    * comment
    * @param sourceOffset the offset of the first character of the reference source
    * @return the comment reference that was parsed
    */
   CommentReference parseCommentReference(String referenceSource, int sourceOffset) {
     if (referenceSource.length == 0) {
       return null;
     }
     try {
       List<bool> errorFound = [false];
-      AnalysisErrorListener listener = new AnalysisErrorListener_8(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]) {
         Token newKeyword = null;
         if (matches3(firstToken, Keyword.NEW)) {
           newKeyword = firstToken;
           firstToken = firstToken.next;
         }
         if (matchesIdentifier2(firstToken)) {
@@ skipping 167 matching lines @@
       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)) {
       TypeName returnType = parseReturnType();
       if ((matches(Keyword.GET) || matches(Keyword.SET)) && matchesIdentifier2(peek())) {
         validateModifiersForTopLevelFunction(modifiers);
         return parseFunctionDeclaration(commentAndMetadata, modifiers.externalKeyword, null);
-      } else if (matches(Keyword.OPERATOR) && peek().isOperator()) {
+      } else if (matches(Keyword.OPERATOR) && isOperator(peek())) {
+        reportError5(ParserErrorCode.TOP_LEVEL_OPERATOR, _currentToken, []);
         return null;
       } else if (matchesIdentifier() && matchesAny(peek(), [TokenType.OPEN_PAREN, TokenType.OPEN_CURLY_BRACKET, TokenType.FUNCTION])) {
         validateModifiersForTopLevelFunction(modifiers);
-        return parseFunctionDeclaration(commentAndMetadata, modifiers.externalKeyword, null);
+        return parseFunctionDeclaration(commentAndMetadata, modifiers.externalKeyword, returnType);
       } else {
         if (matchesIdentifier()) {
           if (matchesAny(peek(), [TokenType.EQ, TokenType.COMMA, TokenType.SEMICOLON])) {
             reportError(ParserErrorCode.VOID_VARIABLE, returnType, []);
             return new TopLevelVariableDeclaration.full(commentAndMetadata.comment, commentAndMetadata.metadata, parseVariableDeclarationList2(null, validateModifiersForTopLevelVariable(modifiers), null), expect2(TokenType.SEMICOLON));
           }
         }
+        reportError5(ParserErrorCode.EXPECTED_EXECUTABLE, _currentToken, []);
         return null;
       }
     } else if ((matches(Keyword.GET) || matches(Keyword.SET)) && matchesIdentifier2(peek())) {
       validateModifiersForTopLevelFunction(modifiers);
       return parseFunctionDeclaration(commentAndMetadata, modifiers.externalKeyword, null);
-    } else if (matches(Keyword.OPERATOR) && peek().isOperator() && matches4(peek2(2), TokenType.OPEN_PAREN)) {
+    } else if (matches(Keyword.OPERATOR) && isOperator(peek())) {
+      reportError5(ParserErrorCode.TOP_LEVEL_OPERATOR, _currentToken, []);
       return null;
     } else if (!matchesIdentifier()) {
+      reportError5(ParserErrorCode.EXPECTED_EXECUTABLE, _currentToken, []);
       return null;
     } else if (matches4(peek(), TokenType.OPEN_PAREN)) {
       validateModifiersForTopLevelFunction(modifiers);
       return parseFunctionDeclaration(commentAndMetadata, modifiers.externalKeyword, null);
     } else if (matchesAny(peek(), [TokenType.EQ, TokenType.COMMA, TokenType.SEMICOLON])) {
       return new TopLevelVariableDeclaration.full(commentAndMetadata.comment, commentAndMetadata.metadata, parseVariableDeclarationList2(null, validateModifiersForTopLevelVariable(modifiers), null), expect2(TokenType.SEMICOLON));
     }
     TypeName returnType = parseReturnType();
     if (matches(Keyword.GET) || matches(Keyword.SET)) {
       validateModifiersForTopLevelFunction(modifiers);
       return parseFunctionDeclaration(commentAndMetadata, modifiers.externalKeyword, returnType);
+    } else if (matches(Keyword.OPERATOR) && isOperator(peek())) {
+      reportError5(ParserErrorCode.TOP_LEVEL_OPERATOR, _currentToken, []);
+      return null;
     } else if (!matchesIdentifier()) {
+      reportError5(ParserErrorCode.EXPECTED_EXECUTABLE, _currentToken, []);
       return null;
     }
     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.
@@ skipping 447 matching lines @@
    * optionalPositionalFormalParameters
    * | namedFormalParameters
    * optionalPositionalFormalParameters ::=
    * '[' defaultFormalParameter (',' defaultFormalParameter)* ']'
    * namedFormalParameters ::=
    * '{' defaultNamedParameter (',' defaultNamedParameter)* '}'
    * </pre>
    * @return the formal parameters that were parsed
    */
   FormalParameterList parseFormalParameterList() {
-    if (matches5(TokenType.EQ) && matches4(peek(), TokenType.OPEN_PAREN)) {
-      Token previous4 = _currentToken.previous;
-      if ((matches4(previous4, TokenType.EQ_EQ) || matches4(previous4, TokenType.BANG_EQ)) && _currentToken.offset == previous4.offset + 2) {
-        advance();
-      }
-    }
     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;
     Token initialToken = null;
     do {
       if (firstParameter) {
         firstParameter = false;
       } else if (!optional(TokenType.COMMA)) {
-        if (((leftParenthesis as BeginToken)).endToken != null) {
+        if ((leftParenthesis is BeginToken) && ((leftParenthesis as BeginToken)).endToken != null) {
           reportError4(ParserErrorCode.EXPECTED_TOKEN, [TokenType.COMMA.lexeme]);
         } else {
+          reportError5(ParserErrorCode.MISSING_CLOSING_PARENTHESIS, _currentToken.previous, []);
           break;
         }
       }
       initialToken = _currentToken;
       if (matches5(TokenType.OPEN_SQUARE_BRACKET)) {
         if (leftSquareBracket != null && !reportedMuliplePositionalGroups) {
           reportError4(ParserErrorCode.MULTIPLE_POSITIONAL_PARAMETER_GROUPS, []);
           reportedMuliplePositionalGroups = true;
         }
         if (leftCurlyBracket != null && !reportedMixedGroups) {
@@ skipping 95 matching lines @@
         } else if (isInitializedVariableDeclaration()) {
           variableList = parseVariableDeclarationList(commentAndMetadata);
         } else {
           initialization = parseExpression2();
         }
         if (matches(Keyword.IN)) {
           DeclaredIdentifier loopVariable = null;
           if (variableList == null) {
             reportError4(ParserErrorCode.MISSING_VARIABLE_IN_FOR_EACH, []);
           } else {
-            NodeList<VariableDeclaration> variables3 = variableList.variables;
-            if (variables3.length > 1) {
-              reportError4(ParserErrorCode.MULTIPLE_VARIABLES_IN_FOR_EACH, [variables3.length.toString()]);
+            NodeList<VariableDeclaration> variables4 = variableList.variables;
+            if (variables4.length > 1) {
+              reportError4(ParserErrorCode.MULTIPLE_VARIABLES_IN_FOR_EACH, [variables4.length.toString()]);
             }
-            VariableDeclaration variable = variables3[0];
+            VariableDeclaration variable = variables4[0];
             if (variable.initializer != null) {
               reportError4(ParserErrorCode.INITIALIZED_VARIABLE_IN_FOR_EACH, []);
             }
             loopVariable = new DeclaredIdentifier.full(commentAndMetadata.comment, commentAndMetadata.metadata, variableList.keyword, variableList.type, variable.name);
           }
           Token inKeyword = expect(Keyword.IN);
           Expression iterator = parseExpression2();
           Token rightParenthesis = expect2(TokenType.CLOSE_PAREN);
           Statement body = parseStatement2();
           return new ForEachStatement.full(forKeyword, leftParenthesis, loopVariable, inKeyword, iterator, rightParenthesis, body);
@@ skipping 45 matching lines @@
       } else if (matches5(TokenType.FUNCTION)) {
         Token functionDefinition = andAdvance;
         Expression expression = parseExpression2();
         Token semicolon = null;
         if (!inExpression) {
           semicolon = expect2(TokenType.SEMICOLON);
         }
         return new ExpressionFunctionBody.full(functionDefinition, expression, semicolon);
       } else if (matches5(TokenType.OPEN_CURLY_BRACKET)) {
         return new BlockFunctionBody.full(parseBlock());
-      } else if (matches2("native")) {
-        advance();
-        parseStringLiteral();
-        return new EmptyFunctionBody.full(andAdvance);
+      } else if (matches2(_NATIVE)) {
+        Token nativeToken = andAdvance;
+        StringLiteral stringLiteral = parseStringLiteral();
+        return new NativeFunctionBody.full(nativeToken, stringLiteral, expect2(TokenType.SEMICOLON));
       } else {
         reportError4(ParserErrorCode.MISSING_FUNCTION_BODY, []);
-        return new EmptyFunctionBody.full(createSyntheticToken(TokenType.SEMICOLON));
+        return new EmptyFunctionBody.full(createSyntheticToken2(TokenType.SEMICOLON));
       }
     } finally {
       _inLoop = wasInLoop;
       _inSwitch = wasInSwitch;
     }
   }
   /**
    * Parse a function declaration.
    * <pre>
    * functionDeclaration ::=
@@ skipping 55 matching lines @@
    * @param commentAndMetadata the documentation comment and metadata to be associated with the
    * declaration
    * @param returnType the return type, or {@code 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 ::=
-   * (returnType? identifier)? formalParameterList functionExpressionBody
+   * formalParameterList functionExpressionBody
    * </pre>
    * @return the function expression that was parsed
    */
   FunctionExpression parseFunctionExpression() {
     FormalParameterList parameters = parseFormalParameterList();
     validateFormalParameterList(parameters);
     FunctionBody body = parseFunctionBody(false, true);
     return new FunctionExpression.full(parameters, body);
   }
   /**
@@ skipping 13 matching lines @@
     if (hasReturnTypeInTypeAlias()) {
       returnType = parseReturnType();
     }
     SimpleIdentifier name = parseSimpleIdentifier();
     TypeParameterList typeParameters = null;
     if (matches5(TokenType.LT)) {
       typeParameters = parseTypeParameterList();
     }
     if (matches5(TokenType.SEMICOLON) || matches5(TokenType.EOF)) {
       reportError4(ParserErrorCode.MISSING_TYPEDEF_PARAMETERS, []);
-      FormalParameterList parameters = new FormalParameterList.full(createSyntheticToken(TokenType.OPEN_PAREN), null, null, null, createSyntheticToken(TokenType.CLOSE_PAREN));
+      FormalParameterList parameters = new FormalParameterList.full(createSyntheticToken2(TokenType.OPEN_PAREN), null, null, null, createSyntheticToken2(TokenType.CLOSE_PAREN));
       Token semicolon = expect2(TokenType.SEMICOLON);
       return new FunctionTypeAlias.full(commentAndMetadata.comment, commentAndMetadata.metadata, keyword, returnType, name, typeParameters, parameters, semicolon);
     } else if (!matches5(TokenType.OPEN_PAREN)) {
+      reportError4(ParserErrorCode.MISSING_TYPEDEF_PARAMETERS, []);
       return null;
     }
     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>
@@ skipping 248 matching lines @@
     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);
     }
     reportError4(ParserErrorCode.EXPECTED_LIST_OR_MAP_LITERAL, []);
-    return new ListLiteral.full(modifier, typeArguments, createSyntheticToken(TokenType.OPEN_SQUARE_BRACKET), null, createSyntheticToken(TokenType.CLOSE_SQUARE_BRACKET));
+    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)
    * </pre>
    * @return the logical and expression that was parsed
    */
   Expression parseLogicalAndExpression() {
@@ skipping 274 matching lines @@
       } else if (identical(keyword31, Keyword.VOID)) {
         TypeName returnType = parseReturnType();
         if (matchesIdentifier() && matchesAny(peek(), [TokenType.OPEN_PAREN, TokenType.OPEN_CURLY_BRACKET, TokenType.FUNCTION])) {
           return parseFunctionDeclarationStatement2(commentAndMetadata, returnType);
         } else {
           if (matchesIdentifier()) {
             if (matchesAny(peek(), [TokenType.EQ, TokenType.COMMA, TokenType.SEMICOLON])) {
               reportError(ParserErrorCode.VOID_VARIABLE, returnType, []);
               return parseVariableDeclarationStatement(commentAndMetadata);
             }
+          } else if (matches5(TokenType.CLOSE_CURLY_BRACKET)) {
+            return parseVariableDeclarationStatement2(commentAndMetadata, null, returnType);
           }
+          reportError4(ParserErrorCode.MISSING_STATEMENT, []);
           return null;
         }
       } else if (identical(keyword31, Keyword.CONST)) {
         if (matchesAny(peek(), [TokenType.LT, TokenType.OPEN_CURLY_BRACKET, TokenType.OPEN_SQUARE_BRACKET, TokenType.INDEX])) {
           return new ExpressionStatement.full(parseExpression2(), expect2(TokenType.SEMICOLON));
         } else if (matches4(peek(), TokenType.IDENTIFIER)) {
           Token afterType = skipTypeName(peek());
           if (afterType != null) {
             if (matches4(afterType, TokenType.OPEN_PAREN) || (matches4(afterType, TokenType.PERIOD) && matches4(afterType.next, TokenType.IDENTIFIER) && matches4(afterType.next.next, TokenType.OPEN_PAREN))) {
               return new ExpressionStatement.full(parseExpression2(), expect2(TokenType.SEMICOLON));
             }
           }
         }
         return parseVariableDeclarationStatement(commentAndMetadata);
       } else if (identical(keyword31, Keyword.NEW) || identical(keyword31, Keyword.TRUE) || identical(keyword31, Keyword.FALSE) || identical(keyword31, Keyword.NULL) || identical(keyword31, Keyword.SUPER) || identical(keyword31, Keyword.THIS)) {
         return new ExpressionStatement.full(parseExpression2(), expect2(TokenType.SEMICOLON));
       } else {
+        reportError4(ParserErrorCode.MISSING_STATEMENT, []);
         return null;
       }
     } else if (matches5(TokenType.SEMICOLON)) {
       return parseEmptyStatement();
     } else if (isInitializedVariableDeclaration()) {
       return parseVariableDeclarationStatement(commentAndMetadata);
     } else if (isFunctionDeclaration()) {
       return parseFunctionDeclarationStatement();
     } else if (matches5(TokenType.CLOSE_CURLY_BRACKET)) {
       reportError4(ParserErrorCode.MISSING_STATEMENT, []);
-      return new EmptyStatement.full(createSyntheticToken(TokenType.SEMICOLON));
+      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
@@ skipping 17 matching lines @@
       thisKeyword = andAdvance;
       period = expect2(TokenType.PERIOD);
     }
     SimpleIdentifier identifier = parseSimpleIdentifier();
     if (matches5(TokenType.OPEN_PAREN)) {
       if (thisKeyword != null) {
       }
       FormalParameterList parameters = parseFormalParameterList();
       return new FunctionTypedFormalParameter.full(commentAndMetadata.comment, commentAndMetadata.metadata, holder.type, identifier, parameters);
     }
-    TypeName type22 = holder.type;
-    if (type22 != null && matches3(type22.name.beginToken, Keyword.VOID)) {
-      reportError5(ParserErrorCode.VOID_PARAMETER, type22.name.beginToken, []);
+    TypeName type27 = holder.type;
+    if (type27 != null && matches3(type27.name.beginToken, Keyword.VOID)) {
+      reportError5(ParserErrorCode.VOID_PARAMETER, type27.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 ::=
    * 'external'? returnType? 'operator' operator formalParameterList
    * </pre>
    * @param commentAndMetadata the documentation comment and metadata to be associated with the
    * declaration
    * @param externalKeyword the 'external' token
    * @param the return type that has already been parsed, or {@code null} if there was no return
    * type
    * @return the operator declaration that was parsed
    */
   MethodDeclaration parseOperator(CommentAndMetadata commentAndMetadata, Token externalKeyword, TypeName returnType) {
-    Token operatorKeyword = expect(Keyword.OPERATOR);
+    Token operatorKeyword;
+    if (matches(Keyword.OPERATOR)) {
+      operatorKeyword = andAdvance;
+    } else {
+      reportError5(ParserErrorCode.MISSING_KEYWORD_OPERATOR, _currentToken, []);
+      operatorKeyword = createSyntheticToken(Keyword.OPERATOR);
+    }
     if (!_currentToken.isUserDefinableOperator()) {
       reportError4(ParserErrorCode.NON_USER_DEFINABLE_OPERATOR, [_currentToken.lexeme]);
     }
     SimpleIdentifier name = new SimpleIdentifier.full(andAdvance);
+    if (matches5(TokenType.EQ)) {
+      Token previous4 = _currentToken.previous;
+      if ((matches4(previous4, TokenType.EQ_EQ) || matches4(previous4, TokenType.BANG_EQ)) && _currentToken.offset == previous4.offset + 2) {
+        reportError4(ParserErrorCode.INVALID_OPERATOR, ["${previous4.lexeme}${_currentToken.lexeme}"]);
+        advance();
+      }
+    }
     FormalParameterList parameters = parseFormalParameterList();
     validateFormalParameterList(parameters);
     FunctionBody body = parseFunctionBody(true, false);
     if (externalKeyword != null && body is! EmptyFunctionBody) {
       reportError4(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 {@code null} without advancing.
@@ skipping 787 matching lines @@
   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)
    * </pre>
-   * @param commentAndMetadata the metadata to be associated with the variable declaration list, or
-   * <code>null</code> if there is no attempt at parsing the comment and metadata
+   * @param commentAndMetadata the metadata to be associated with the variable declaration list, or{@code null} if there is no attempt at parsing the comment and metadata
    * @param keyword the token representing the 'final', 'const' or 'var' keyword, or {@code null} if
    * 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 ';'
    * </pre>
+   * @param commentAndMetadata the metadata to be associated with the variable declaration
+   * statement, or {@code 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 ';'
+   * </pre>
+   * @param commentAndMetadata the metadata to be associated with the variable declaration
+   * statement, or {@code null} if there is no attempt at parsing the comment and metadata
+   * @param keyword the token representing the 'final', 'const' or 'var' keyword, or {@code null} if
+   * 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
    * </pre>
    * @return the while statement that was parsed
    */
   Statement parseWhileStatement() {
     bool wasInLoop = _inLoop;
     _inLoop = true;
@@ skipping 240 matching lines @@
    * actually creating a string literal or changing the current token. Return the token following
    * the string literal that was parsed, or {@code null} if the given token is not the first token
    * in a valid string literal.
    * <p>
    * This method must be kept in sync with {@link #parseStringInterpolation(Token)}.
    * @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 type23 = token.type;
-    while (identical(type23, TokenType.STRING_INTERPOLATION_EXPRESSION) || identical(type23, TokenType.STRING_INTERPOLATION_IDENTIFIER)) {
-      if (identical(type23, TokenType.STRING_INTERPOLATION_EXPRESSION)) {
+    TokenType type28 = token.type;
+    while (identical(type28, TokenType.STRING_INTERPOLATION_EXPRESSION) || identical(type28, TokenType.STRING_INTERPOLATION_IDENTIFIER)) {
+      if (identical(type28, TokenType.STRING_INTERPOLATION_EXPRESSION)) {
         token = token.next;
-        type23 = token.type;
+        type28 = token.type;
         int bracketNestingLevel = 1;
         while (bracketNestingLevel > 0) {
-          if (identical(type23, TokenType.EOF)) {
+          if (identical(type28, TokenType.EOF)) {
             return null;
-          } else if (identical(type23, TokenType.OPEN_CURLY_BRACKET)) {
+          } else if (identical(type28, TokenType.OPEN_CURLY_BRACKET)) {
             bracketNestingLevel++;
-          } else if (identical(type23, TokenType.CLOSE_CURLY_BRACKET)) {
+          } else if (identical(type28, TokenType.CLOSE_CURLY_BRACKET)) {
             bracketNestingLevel--;
-          } else if (identical(type23, TokenType.STRING)) {
+          } else if (identical(type28, TokenType.STRING)) {
             token = skipStringLiteral(token);
             if (token == null) {
               return null;
             }
           } else {
             token = token.next;
           }
-          type23 = token.type;
+          type28 = token.type;
         }
         token = token.next;
-        type23 = token.type;
+        type28 = token.type;
       } else {
         token = token.next;
         if (token.type != TokenType.IDENTIFIER) {
           return null;
         }
         token = token.next;
       }
-      type23 = token.type;
-      if (identical(type23, TokenType.STRING)) {
+      type28 = token.type;
+      if (identical(type28, TokenType.STRING)) {
         token = token.next;
-        type23 = token.type;
+        type28 = token.type;
       }
     }
     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 {@code null} if the given token is not the first token in a valid string literal.
    * <p>
    * This method must be kept in sync with {@link #parseStringLiteral()}.
    * <pre>
    * stringLiteral ::=
    * 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 type24 = token.type;
-      if (identical(type24, TokenType.STRING_INTERPOLATION_EXPRESSION) || identical(type24, TokenType.STRING_INTERPOLATION_IDENTIFIER)) {
+      TokenType type29 = token.type;
+      if (identical(type29, TokenType.STRING_INTERPOLATION_EXPRESSION) || identical(type29, 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
@@ skipping 444 matching lines @@
       reportError5(ParserErrorCode.EXTERNAL_TYPEDEF, modifiers.externalKeyword, []);
     }
     if (modifiers.finalKeyword != null) {
       reportError5(ParserErrorCode.FINAL_TYPEDEF, modifiers.finalKeyword, []);
     }
     if (modifiers.varKeyword != null) {
       reportError5(ParserErrorCode.VAR_TYPEDEF, modifiers.varKeyword, []);
     }
   }
 }
-class AnalysisErrorListener_8 implements AnalysisErrorListener {
+class KeywordToken_11 extends KeywordToken {
+  KeywordToken_11(Keyword arg0, int arg1) : super(arg0, arg1);
+  int get length => 0;
+}
+class AnalysisErrorListener_12 implements AnalysisErrorListener {
   List<bool> errorFound;
-  AnalysisErrorListener_8(this.errorFound);
+  AnalysisErrorListener_12(this.errorFound);
   void onError(AnalysisError error) {
     errorFound[0] = true;
   }
 }
 /**
  * The enumeration {@code 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 ErrorCode {
+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'");
   static final ParserErrorCode CONST_AND_VAR = new ParserErrorCode.con2('CONST_AND_VAR', 7, "Members cannot be declared to be both 'const' and 'var'");
   static final ParserErrorCode CONST_CLASS = new ParserErrorCode.con2('CONST_CLASS', 8, "Classes cannot be declared to be 'const'");
   static final ParserErrorCode CONST_METHOD = new ParserErrorCode.con2('CONST_METHOD', 9, "Getters, setters and methods cannot be declared to be 'const'");
   static final ParserErrorCode CONST_TYPEDEF = new ParserErrorCode.con2('CONST_TYPEDEF', 10, "Type aliases cannot be declared to be 'const'");
   static final ParserErrorCode CONSTRUCTOR_WITH_RETURN_TYPE = new ParserErrorCode.con2('CONSTRUCTOR_WITH_RETURN_TYPE', 11, "Constructors cannot have a return type");
   static final ParserErrorCode CONTINUE_OUTSIDE_OF_LOOP = new ParserErrorCode.con2('CONTINUE_OUTSIDE_OF_LOOP', 12, "A continue statement cannot be used outside of a loop or switch statement");
   static final ParserErrorCode CONTINUE_WITHOUT_LABEL_IN_CASE = new ParserErrorCode.con2('CONTINUE_WITHOUT_LABEL_IN_CASE', 13, "A continue statement in a switch statement must have a label as a target");
   static final ParserErrorCode DIRECTIVE_AFTER_DECLARATION = new ParserErrorCode.con2('DIRECTIVE_AFTER_DECLARATION', 14, "Directives must appear before any declarations");
   static final ParserErrorCode DUPLICATE_LABEL_IN_SWITCH_STATEMENT = new ParserErrorCode.con2('DUPLICATE_LABEL_IN_SWITCH_STATEMENT', 15, "The label %s was already used in this switch statement");
   static final ParserErrorCode DUPLICATED_MODIFIER = new ParserErrorCode.con2('DUPLICATED_MODIFIER', 16, "The modifier '%s' was already specified.");
   static final ParserErrorCode EXPECTED_CASE_OR_DEFAULT = new ParserErrorCode.con2('EXPECTED_CASE_OR_DEFAULT', 17, "Expected 'case' or 'default'");
-  static final ParserErrorCode EXPECTED_LIST_OR_MAP_LITERAL = new ParserErrorCode.con2('EXPECTED_LIST_OR_MAP_LITERAL', 18, "Expected a list or map literal");
-  static final ParserErrorCode EXPECTED_STRING_LITERAL = new ParserErrorCode.con2('EXPECTED_STRING_LITERAL', 19, "Expected a string literal");
-  static final ParserErrorCode EXPECTED_TOKEN = new ParserErrorCode.con2('EXPECTED_TOKEN', 20, "Expected to find '%s'");
-  static final ParserErrorCode EXPORT_DIRECTIVE_AFTER_PART_DIRECTIVE = new ParserErrorCode.con2('EXPORT_DIRECTIVE_AFTER_PART_DIRECTIVE', 21, "Export directives must preceed part directives");
-  static final ParserErrorCode EXTERNAL_AFTER_CONST = new ParserErrorCode.con2('EXTERNAL_AFTER_CONST', 22, "The modifier 'external' should be before the modifier 'const'");
-  static final ParserErrorCode EXTERNAL_AFTER_FACTORY = new ParserErrorCode.con2('EXTERNAL_AFTER_FACTORY', 23, "The modifier 'external' should be before the modifier 'factory'");
-  static final ParserErrorCode EXTERNAL_AFTER_STATIC = new ParserErrorCode.con2('EXTERNAL_AFTER_STATIC', 24, "The modifier 'external' should be before the modifier 'static'");
-  static final ParserErrorCode EXTERNAL_CLASS = new ParserErrorCode.con2('EXTERNAL_CLASS', 25, "Classes cannot be declared to be 'external'");
-  static final ParserErrorCode EXTERNAL_CONSTRUCTOR_WITH_BODY = new ParserErrorCode.con2('EXTERNAL_CONSTRUCTOR_WITH_BODY', 26, "External constructors cannot have a body");
-  static final ParserErrorCode EXTERNAL_FIELD = new ParserErrorCode.con2('EXTERNAL_FIELD', 27, "Fields cannot be declared to be 'external'");
-  static final ParserErrorCode EXTERNAL_GETTER_WITH_BODY = new ParserErrorCode.con2('EXTERNAL_GETTER_WITH_BODY', 28, "External getters cannot have a body");
-  static final ParserErrorCode EXTERNAL_METHOD_WITH_BODY = new ParserErrorCode.con2('EXTERNAL_METHOD_WITH_BODY', 29, "External methods cannot have a body");
-  static final ParserErrorCode EXTERNAL_OPERATOR_WITH_BODY = new ParserErrorCode.con2('EXTERNAL_OPERATOR_WITH_BODY', 30, "External operators cannot have a body");
-  static final ParserErrorCode EXTERNAL_SETTER_WITH_BODY = new ParserErrorCode.con2('EXTERNAL_SETTER_WITH_BODY', 31, "External setters cannot have a body");
-  static final ParserErrorCode EXTERNAL_TYPEDEF = new ParserErrorCode.con2('EXTERNAL_TYPEDEF', 32, "Type aliases cannot be declared to be 'external'");
-  static final ParserErrorCode FACTORY_TOP_LEVEL_DECLARATION = new ParserErrorCode.con2('FACTORY_TOP_LEVEL_DECLARATION', 33, "Top-level declarations cannot be declared to be 'factory'");
-  static final ParserErrorCode FIELD_INITIALIZER_OUTSIDE_CONSTRUCTOR = new ParserErrorCode.con2('FIELD_INITIALIZER_OUTSIDE_CONSTRUCTOR', 34, "Field initializers can only be used in a constructor");
-  static final ParserErrorCode FINAL_AND_VAR = new ParserErrorCode.con2('FINAL_AND_VAR', 35, "Members cannot be declared to be both 'final' and 'var'");
-  static final ParserErrorCode FINAL_CLASS = new ParserErrorCode.con2('FINAL_CLASS', 36, "Classes cannot be declared to be 'final'");
-  static final ParserErrorCode FINAL_CONSTRUCTOR = new ParserErrorCode.con2('FINAL_CONSTRUCTOR', 37, "A constructor cannot be declared to be 'final'");
-  static final ParserErrorCode FINAL_METHOD = new ParserErrorCode.con2('FINAL_METHOD', 38, "Getters, setters and methods cannot be declared to be 'final'");
-  static final ParserErrorCode FINAL_TYPEDEF = new ParserErrorCode.con2('FINAL_TYPEDEF', 39, "Type aliases cannot be declared to be 'final'");
-  static final ParserErrorCode GETTER_WITH_PARAMETERS = new ParserErrorCode.con2('GETTER_WITH_PARAMETERS', 40, "Getter should be declared without a parameter list");
-  static final ParserErrorCode ILLEGAL_ASSIGNMENT_TO_NON_ASSIGNABLE = new ParserErrorCode.con2('ILLEGAL_ASSIGNMENT_TO_NON_ASSIGNABLE', 41, "Illegal assignment to non-assignable expression");
-  static final ParserErrorCode IMPLEMENTS_BEFORE_EXTENDS = new ParserErrorCode.con2('IMPLEMENTS_BEFORE_EXTENDS', 42, "The extends clause must be before the implements clause");
-  static final ParserErrorCode IMPLEMENTS_BEFORE_WITH = new ParserErrorCode.con2('IMPLEMENTS_BEFORE_WITH', 43, "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', 44, "Import directives must preceed part directives");
-  static final ParserErrorCode INITIALIZED_VARIABLE_IN_FOR_EACH = new ParserErrorCode.con2('INITIALIZED_VARIABLE_IN_FOR_EACH', 45, "The loop variable in a for-each loop cannot be initialized");
-  static final ParserErrorCode INVALID_CODE_POINT = new ParserErrorCode.con2('INVALID_CODE_POINT', 46, "The escape sequence '%s' is not a valid code point");
-  static final ParserErrorCode INVALID_COMMENT_REFERENCE = new ParserErrorCode.con2('INVALID_COMMENT_REFERENCE', 47, "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', 48, "An escape sequence starting with '\\x' must be followed by 2 hexidecimal digits");
-  static final ParserErrorCode INVALID_OPERATOR_FOR_SUPER = new ParserErrorCode.con2('INVALID_OPERATOR_FOR_SUPER', 49, "The operator '%s' cannot be used with 'super'");
-  static final ParserErrorCode INVALID_UNICODE_ESCAPE = new ParserErrorCode.con2('INVALID_UNICODE_ESCAPE', 50, "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', 51, "The library directive must appear before all other directives");
-  static final ParserErrorCode MISSING_ASSIGNABLE_SELECTOR = new ParserErrorCode.con2('MISSING_ASSIGNABLE_SELECTOR', 52, "Missing selector such as \".<identifier>\" or \"[0]\"");
-  static final ParserErrorCode MISSING_CATCH_OR_FINALLY = new ParserErrorCode.con2('MISSING_CATCH_OR_FINALLY', 53, "A try statement must have either a catch or finally clause");
-  static final ParserErrorCode MISSING_CLASS_BODY = new ParserErrorCode.con2('MISSING_CLASS_BODY', 54, "A class definition must have a body, even if it is empty");
-  static final ParserErrorCode MISSING_CONST_FINAL_VAR_OR_TYPE = new ParserErrorCode.con2('MISSING_CONST_FINAL_VAR_OR_TYPE', 55, "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', 56, "Throw expressions must compute the object to be thrown");
-  static final ParserErrorCode MISSING_FUNCTION_BODY = new ParserErrorCode.con2('MISSING_FUNCTION_BODY', 57, "A function body must be provided");
-  static final ParserErrorCode MISSING_FUNCTION_PARAMETERS = new ParserErrorCode.con2('MISSING_FUNCTION_PARAMETERS', 58, "Functions must have an explicit list of parameters");
-  static final ParserErrorCode MISSING_IDENTIFIER = new ParserErrorCode.con2('MISSING_IDENTIFIER', 59, "Expected an identifier");
-  static final ParserErrorCode MISSING_NAME_IN_LIBRARY_DIRECTIVE = new ParserErrorCode.con2('MISSING_NAME_IN_LIBRARY_DIRECTIVE', 60, "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', 61, "Library directives must include a library name");
-  static final ParserErrorCode MISSING_STATEMENT = new ParserErrorCode.con2('MISSING_STATEMENT', 62, "Expected a statement");
-  static final ParserErrorCode MISSING_TERMINATOR_FOR_PARAMETER_GROUP = new ParserErrorCode.con2('MISSING_TERMINATOR_FOR_PARAMETER_GROUP', 63, "There is no '%s' to close the parameter group");
-  static final ParserErrorCode MISSING_TYPEDEF_PARAMETERS = new ParserErrorCode.con2('MISSING_TYPEDEF_PARAMETERS', 64, "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', 65, "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', 66, "Cannot have both positional and named parameters in a single parameter list");
-  static final ParserErrorCode MULTIPLE_EXTENDS_CLAUSES = new ParserErrorCode.con2('MULTIPLE_EXTENDS_CLAUSES', 67, "Each class definition can have at most one extends clause");
-  static final ParserErrorCode MULTIPLE_IMPLEMENTS_CLAUSES = new ParserErrorCode.con2('MULTIPLE_IMPLEMENTS_CLAUSES', 68, "Each class definition can have at most one implements clause");
-  static final ParserErrorCode MULTIPLE_LIBRARY_DIRECTIVES = new ParserErrorCode.con2('MULTIPLE_LIBRARY_DIRECTIVES', 69, "Only one library directive may be declared in a file");
-  static final ParserErrorCode MULTIPLE_NAMED_PARAMETER_GROUPS = new ParserErrorCode.con2('MULTIPLE_NAMED_PARAMETER_GROUPS', 70, "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', 71, "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', 72, "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', 73, "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', 74, "Each class definition can have at most one with clause");
-  static final ParserErrorCode NAMED_PARAMETER_OUTSIDE_GROUP = new ParserErrorCode.con2('NAMED_PARAMETER_OUTSIDE_GROUP', 75, "Named parameters must be enclosed in curly braces ('{' and '}')");
-  static final ParserErrorCode NON_CONSTRUCTOR_FACTORY = new ParserErrorCode.con2('NON_CONSTRUCTOR_FACTORY', 76, "Only constructors can be declared to be a 'factory'");
-  static final ParserErrorCode NON_IDENTIFIER_LIBRARY_NAME = new ParserErrorCode.con2('NON_IDENTIFIER_LIBRARY_NAME', 77, "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', 78, "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', 79, "The operator '%s' is not user definable");
-  static final ParserErrorCode POSITIONAL_AFTER_NAMED_ARGUMENT = new ParserErrorCode.con2('POSITIONAL_AFTER_NAMED_ARGUMENT', 80, "Positional arguments must occur before named arguments");
-  static final ParserErrorCode POSITIONAL_PARAMETER_OUTSIDE_GROUP = new ParserErrorCode.con2('POSITIONAL_PARAMETER_OUTSIDE_GROUP', 81, "Positional parameters must be enclosed in square brackets ('[' and ']')");
-  static final ParserErrorCode STATIC_AFTER_CONST = new ParserErrorCode.con2('STATIC_AFTER_CONST', 82, "The modifier 'static' should be before the modifier 'const'");
-  static final ParserErrorCode STATIC_AFTER_FINAL = new ParserErrorCode.con2('STATIC_AFTER_FINAL', 83, "The modifier 'static' should be before the modifier 'final'");
-  static final ParserErrorCode STATIC_AFTER_VAR = new ParserErrorCode.con2('STATIC_AFTER_VAR', 84, "The modifier 'static' should be before the modifier 'var'");
-  static final ParserErrorCode STATIC_CONSTRUCTOR = new ParserErrorCode.con2('STATIC_CONSTRUCTOR', 85, "Constructors cannot be static");
-  static final ParserErrorCode STATIC_OPERATOR = new ParserErrorCode.con2('STATIC_OPERATOR', 86, "Operators cannot be static");
-  static final ParserErrorCode STATIC_TOP_LEVEL_DECLARATION = new ParserErrorCode.con2('STATIC_TOP_LEVEL_DECLARATION', 87, "Top-level declarations cannot be declared to be 'static'");
-  static final ParserErrorCode UNEXPECTED_TERMINATOR_FOR_PARAMETER_GROUP = new ParserErrorCode.con2('UNEXPECTED_TERMINATOR_FOR_PARAMETER_GROUP', 88, "There is no '%s' to open a parameter group");
-  static final ParserErrorCode UNEXPECTED_TOKEN = new ParserErrorCode.con2('UNEXPECTED_TOKEN', 89, "Unexpected token '%s'");
-  static final ParserErrorCode USE_OF_UNARY_PLUS_OPERATOR = new ParserErrorCode.con2('USE_OF_UNARY_PLUS_OPERATOR', 90, "There is no unary plus operator in Dart");
-  static final ParserErrorCode WITH_BEFORE_EXTENDS = new ParserErrorCode.con2('WITH_BEFORE_EXTENDS', 91, "The extends clause must be before the with clause");
-  static final ParserErrorCode WITH_WITHOUT_EXTENDS = new ParserErrorCode.con2('WITH_WITHOUT_EXTENDS', 92, "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', 93, "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', 94, "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', 95, "Expected '%s' to close parameter group");
-  static final ParserErrorCode VAR_CLASS = new ParserErrorCode.con2('VAR_CLASS', 96, "Classes cannot be declared to be 'var'");
-  static final ParserErrorCode VAR_RETURN_TYPE = new ParserErrorCode.con2('VAR_RETURN_TYPE', 97, "The return type cannot be 'var'");
-  static final ParserErrorCode VAR_TYPEDEF = new ParserErrorCode.con2('VAR_TYPEDEF', 98, "Type aliases cannot be declared to be 'var'");
-  static final ParserErrorCode VOID_PARAMETER = new ParserErrorCode.con2('VOID_PARAMETER', 99, "Parameters cannot have a type of 'void'");
-  static final ParserErrorCode VOID_VARIABLE = new ParserErrorCode.con2('VOID_VARIABLE', 100, "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_METHOD, CONST_TYPEDEF, CONSTRUCTOR_WITH_RETURN_TYPE, CONTINUE_OUTSIDE_OF_LOOP, CONTINUE_WITHOUT_LABEL_IN_CASE, DIRECTIVE_AFTER_DECLARATION, DUPLICATE_LABEL_IN_SWITCH_STATEMENT, DUPLICATED_MODIFIER, EXPECTED_CASE_OR_DEFAULT, EXPECTED_LIST_OR_MAP_LITERAL, EXPECTED_STRING_LITERAL, EXPECTED_TOKEN, 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, 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_FOR_SUPER, INVALID_UNICODE_ESCAPE, LIBRARY_DIRECTIVE_NOT_FIRST, MISSING_ASSIGNABLE_SELECTOR, MISSING_CATCH_OR_FINALLY, MISSING_CLASS_BODY, MISSING_CONST_FINAL_VAR_OR_TYPE, MISSING_EXPRESSION_IN_THROW, MISSING_FUNCTION_BODY, MISSING_FUNCTION_PARAMETERS, MISSING_IDENTIFIER, 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_PARAMETER_OUTSIDE_GROUP, 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_OPERATOR, STATIC_TOP_LEVEL_DECLARATION, UNEXPECTED_TERMINATOR_FOR_PARAMETER_GROUP, UNEXPECTED_TOKEN, USE_OF_UNARY_PLUS_OPERATOR, WITH_BEFORE_EXTENDS, WITH_WITHOUT_EXTENDS, WRONG_SEPARATOR_FOR_NAMED_PARAMETER, WRONG_SEPARATOR_FOR_POSITIONAL_PARAMETER, WRONG_TERMINATOR_FOR_PARAMETER_GROUP, VAR_CLASS, VAR_RETURN_TYPE, VAR_TYPEDEF, VOID_PARAMETER, VOID_VARIABLE];
+  static final ParserErrorCode EXPECTED_CLASS_MEMBER = new ParserErrorCode.con2('EXPECTED_CLASS_MEMBER', 18, "Expected a class member");
+  static final ParserErrorCode EXPECTED_EXECUTABLE = new ParserErrorCode.con2('EXPECTED_EXECUTABLE', 19, "Expected a method, getter, setter or operator declaration");
+  static final ParserErrorCode EXPECTED_LIST_OR_MAP_LITERAL = new ParserErrorCode.con2('EXPECTED_LIST_OR_MAP_LITERAL', 20, "Expected a list or map literal");
+  static final ParserErrorCode EXPECTED_STRING_LITERAL = new ParserErrorCode.con2('EXPECTED_STRING_LITERAL', 21, "Expected a string literal");
+  static final ParserErrorCode EXPECTED_TOKEN = new ParserErrorCode.con2('EXPECTED_TOKEN', 22, "Expected to find '%s'");
+  static final ParserErrorCode EXPORT_DIRECTIVE_AFTER_PART_DIRECTIVE = new ParserErrorCode.con2('EXPORT_DIRECTIVE_AFTER_PART_DIRECTIVE', 23, "Export directives must preceed part directives");
+  static final ParserErrorCode EXTERNAL_AFTER_CONST = new ParserErrorCode.con2('EXTERNAL_AFTER_CONST', 24, "The modifier 'external' should be before the modifier 'const'");
+  static final ParserErrorCode EXTERNAL_AFTER_FACTORY = new ParserErrorCode.con2('EXTERNAL_AFTER_FACTORY', 25, "The modifier 'external' should be before the modifier 'factory'");
+  static final ParserErrorCode EXTERNAL_AFTER_STATIC = new ParserErrorCode.con2('EXTERNAL_AFTER_STATIC', 26, "The modifier 'external' should be before the modifier 'static'");
+  static final ParserErrorCode EXTERNAL_CLASS = new ParserErrorCode.con2('EXTERNAL_CLASS', 27, "Classes cannot be declared to be 'external'");
+  static final ParserErrorCode EXTERNAL_CONSTRUCTOR_WITH_BODY = new ParserErrorCode.con2('EXTERNAL_CONSTRUCTOR_WITH_BODY', 28, "External constructors cannot have a body");
+  static final ParserErrorCode EXTERNAL_FIELD = new ParserErrorCode.con2('EXTERNAL_FIELD', 29, "Fields cannot be declared to be 'external'");
+  static final ParserErrorCode EXTERNAL_GETTER_WITH_BODY = new ParserErrorCode.con2('EXTERNAL_GETTER_WITH_BODY', 30, "External getters cannot have a body");
+  static final ParserErrorCode EXTERNAL_METHOD_WITH_BODY = new ParserErrorCode.con2('EXTERNAL_METHOD_WITH_BODY', 31, "External methods cannot have a body");
+  static final ParserErrorCode EXTERNAL_OPERATOR_WITH_BODY = new ParserErrorCode.con2('EXTERNAL_OPERATOR_WITH_BODY', 32, "External operators cannot have a body");
+  static final ParserErrorCode EXTERNAL_SETTER_WITH_BODY = new ParserErrorCode.con2('EXTERNAL_SETTER_WITH_BODY', 33, "External setters cannot have a body");
+  static final ParserErrorCode EXTERNAL_TYPEDEF = new ParserErrorCode.con2('EXTERNAL_TYPEDEF', 34, "Type aliases cannot be declared to be 'external'");
+  static final ParserErrorCode FACTORY_TOP_LEVEL_DECLARATION = new ParserErrorCode.con2('FACTORY_TOP_LEVEL_DECLARATION', 35, "Top-level declarations cannot be declared to be 'factory'");
+  static final ParserErrorCode FIELD_INITIALIZER_OUTSIDE_CONSTRUCTOR = new ParserErrorCode.con2('FIELD_INITIALIZER_OUTSIDE_CONSTRUCTOR', 36, "Field initializers can only be used in a constructor");
+  static final ParserErrorCode FINAL_AND_VAR = new ParserErrorCode.con2('FINAL_AND_VAR', 37, "Members cannot be declared to be both 'final' and 'var'");
+  static final ParserErrorCode FINAL_CLASS = new ParserErrorCode.con2('FINAL_CLASS', 38, "Classes cannot be declared to be 'final'");
+  static final ParserErrorCode FINAL_CONSTRUCTOR = new ParserErrorCode.con2('FINAL_CONSTRUCTOR', 39, "A constructor cannot be declared to be 'final'");
+  static final ParserErrorCode FINAL_METHOD = new ParserErrorCode.con2('FINAL_METHOD', 40, "Getters, setters and methods cannot be declared to be 'final'");
+  static final ParserErrorCode FINAL_TYPEDEF = new ParserErrorCode.con2('FINAL_TYPEDEF', 41, "Type aliases cannot be declared to be 'final'");
+  static final ParserErrorCode GETTER_WITH_PARAMETERS = new ParserErrorCode.con2('GETTER_WITH_PARAMETERS', 42, "Getter should be declared without a parameter list");
+  static final ParserErrorCode ILLEGAL_ASSIGNMENT_TO_NON_ASSIGNABLE = new ParserErrorCode.con2('ILLEGAL_ASSIGNMENT_TO_NON_ASSIGNABLE', 43, "Illegal assignment to non-assignable expression");
+  static final ParserErrorCode IMPLEMENTS_BEFORE_EXTENDS = new ParserErrorCode.con2('IMPLEMENTS_BEFORE_EXTENDS', 44, "The extends clause must be before the implements clause");
+  static final ParserErrorCode IMPLEMENTS_BEFORE_WITH = new ParserErrorCode.con2('IMPLEMENTS_BEFORE_WITH', 45, "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', 46, "Import directives must preceed part directives");
+  static final ParserErrorCode INITIALIZED_VARIABLE_IN_FOR_EACH = new ParserErrorCode.con2('INITIALIZED_VARIABLE_IN_FOR_EACH', 47, "The loop variable in a for-each loop cannot be initialized");
+  static final ParserErrorCode INVALID_CODE_POINT = new ParserErrorCode.con2('INVALID_CODE_POINT', 48, "The escape sequence '%s' is not a valid code point");
+  static final ParserErrorCode INVALID_COMMENT_REFERENCE = new ParserErrorCode.con2('INVALID_COMMENT_REFERENCE', 49, "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', 50, "An escape sequence starting with '\\x' must be followed by 2 hexidecimal digits");
+  static final ParserErrorCode INVALID_OPERATOR = new ParserErrorCode.con2('INVALID_OPERATOR', 51, "The string '%s' is not a valid operator");
+  static final ParserErrorCode INVALID_OPERATOR_FOR_SUPER = new ParserErrorCode.con2('INVALID_OPERATOR_FOR_SUPER', 52, "The operator '%s' cannot be used with 'super'");
+  static final ParserErrorCode INVALID_UNICODE_ESCAPE = new ParserErrorCode.con2('INVALID_UNICODE_ESCAPE', 53, "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', 54, "The library directive must appear before all other directives");
+  static final ParserErrorCode MISSING_ASSIGNABLE_SELECTOR = new ParserErrorCode.con2('MISSING_ASSIGNABLE_SELECTOR', 55, "Missing selector such as \".<identifier>\" or \"[0]\"");
+  static final ParserErrorCode MISSING_CATCH_OR_FINALLY = new ParserErrorCode.con2('MISSING_CATCH_OR_FINALLY', 56, "A try statement must have either a catch or finally clause");
+  static final ParserErrorCode MISSING_CLASS_BODY = new ParserErrorCode.con2('MISSING_CLASS_BODY', 57, "A class definition must have a body, even if it is empty");
+  static final ParserErrorCode MISSING_CLOSING_PARENTHESIS = new ParserErrorCode.con2('MISSING_CLOSING_PARENTHESIS', 58, "The closing parenthesis is missing");
+  static final ParserErrorCode MISSING_CONST_FINAL_VAR_OR_TYPE = new ParserErrorCode.con2('MISSING_CONST_FINAL_VAR_OR_TYPE', 59, "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', 60, "Throw expressions must compute the object to be thrown");
+  static final ParserErrorCode MISSING_FUNCTION_BODY = new ParserErrorCode.con2('MISSING_FUNCTION_BODY', 61, "A function body must be provided");
+  static final ParserErrorCode MISSING_FUNCTION_PARAMETERS = new ParserErrorCode.con2('MISSING_FUNCTION_PARAMETERS', 62, "Functions must have an explicit list of parameters");
+  static final ParserErrorCode MISSING_IDENTIFIER = new ParserErrorCode.con2('MISSING_IDENTIFIER', 63, "Expected an identifier");
+  static final ParserErrorCode MISSING_KEYWORD_OPERATOR = new ParserErrorCode.con2('MISSING_KEYWORD_OPERATOR', 64, "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', 65, "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', 66, "Library directives must include a library name");
+  static final ParserErrorCode MISSING_STATEMENT = new ParserErrorCode.con2('MISSING_STATEMENT', 67, "Expected a statement");
+  static final ParserErrorCode MISSING_TERMINATOR_FOR_PARAMETER_GROUP = new ParserErrorCode.con2('MISSING_TERMINATOR_FOR_PARAMETER_GROUP', 68, "There is no '%s' to close the parameter group");
+  static final ParserErrorCode MISSING_TYPEDEF_PARAMETERS = new ParserErrorCode.con2('MISSING_TYPEDEF_PARAMETERS', 69, "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', 70, "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', 71, "Cannot have both positional and named parameters in a single parameter list");
+  static final ParserErrorCode MULTIPLE_EXTENDS_CLAUSES = new ParserErrorCode.con2('MULTIPLE_EXTENDS_CLAUSES', 72, "Each class definition can have at most one extends clause");
+  static final ParserErrorCode MULTIPLE_IMPLEMENTS_CLAUSES = new ParserErrorCode.con2('MULTIPLE_IMPLEMENTS_CLAUSES', 73, "Each class definition can have at most one implements clause");
+  static final ParserErrorCode MULTIPLE_LIBRARY_DIRECTIVES = new ParserErrorCode.con2('MULTIPLE_LIBRARY_DIRECTIVES', 74, "Only one library directive may be declared in a file");
+  static final ParserErrorCode MULTIPLE_NAMED_PARAMETER_GROUPS = new ParserErrorCode.con2('MULTIPLE_NAMED_PARAMETER_GROUPS', 75, "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', 76, "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', 77, "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', 78, "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', 79, "Each class definition can have at most one with clause");
+  static final ParserErrorCode NAMED_FUNCTION_EXPRESSION = new ParserErrorCode.con2('NAMED_FUNCTION_EXPRESSION', 80, "Function expressions cannot be named");
+  static final ParserErrorCode NAMED_PARAMETER_OUTSIDE_GROUP = new ParserErrorCode.con2('NAMED_PARAMETER_OUTSIDE_GROUP', 81, "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', 82, "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', 83, "Only constructors can be declared to be a 'factory'");
+  static final ParserErrorCode NON_IDENTIFIER_LIBRARY_NAME = new ParserErrorCode.con2('NON_IDENTIFIER_LIBRARY_NAME', 84, "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', 85, "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', 86, "The operator '%s' is not user definable");
+  static final ParserErrorCode POSITIONAL_AFTER_NAMED_ARGUMENT = new ParserErrorCode.con2('POSITIONAL_AFTER_NAMED_ARGUMENT', 87, "Positional arguments must occur before named arguments");
+  static final ParserErrorCode POSITIONAL_PARAMETER_OUTSIDE_GROUP = new ParserErrorCode.con2('POSITIONAL_PARAMETER_OUTSIDE_GROUP', 88, "Positional parameters must be enclosed in square brackets ('[' and ']')");
+  static final ParserErrorCode STATIC_AFTER_CONST = new ParserErrorCode.con2('STATIC_AFTER_CONST', 89, "The modifier 'static' should be before the modifier 'const'");
+  static final ParserErrorCode STATIC_AFTER_FINAL = new ParserErrorCode.con2('STATIC_AFTER_FINAL', 90, "The modifier 'static' should be before the modifier 'final'");
+  static final ParserErrorCode STATIC_AFTER_VAR = new ParserErrorCode.con2('STATIC_AFTER_VAR', 91, "The modifier 'static' should be before the modifier 'var'");
+  static final ParserErrorCode STATIC_CONSTRUCTOR = new ParserErrorCode.con2('STATIC_CONSTRUCTOR', 92, "Constructors cannot be static");
+  static final ParserErrorCode STATIC_OPERATOR = new ParserErrorCode.con2('STATIC_OPERATOR', 93, "Operators cannot be static");
+  static final ParserErrorCode STATIC_TOP_LEVEL_DECLARATION = new ParserErrorCode.con2('STATIC_TOP_LEVEL_DECLARATION', 94, "Top-level declarations cannot be declared to be 'static'");
+  static final ParserErrorCode TOP_LEVEL_OPERATOR = new ParserErrorCode.con2('TOP_LEVEL_OPERATOR', 95, "Operators must be declared within a class");
+  static final ParserErrorCode UNEXPECTED_TERMINATOR_FOR_PARAMETER_GROUP = new ParserErrorCode.con2('UNEXPECTED_TERMINATOR_FOR_PARAMETER_GROUP', 96, "There is no '%s' to open a parameter group");
+  static final ParserErrorCode UNEXPECTED_TOKEN = new ParserErrorCode.con2('UNEXPECTED_TOKEN', 97, "Unexpected token '%s'");
+  static final ParserErrorCode USE_OF_UNARY_PLUS_OPERATOR = new ParserErrorCode.con2('USE_OF_UNARY_PLUS_OPERATOR', 98, "There is no unary plus operator in Dart");
+  static final ParserErrorCode WITH_BEFORE_EXTENDS = new ParserErrorCode.con2('WITH_BEFORE_EXTENDS', 99, "The extends clause must be before the with clause");
+  static final ParserErrorCode WITH_WITHOUT_EXTENDS = new ParserErrorCode.con2('WITH_WITHOUT_EXTENDS', 100, "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', 101, "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', 102, "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', 103, "Expected '%s' to close parameter group");
+  static final ParserErrorCode VAR_CLASS = new ParserErrorCode.con2('VAR_CLASS', 104, "Classes cannot be declared to be 'var'");
+  static final ParserErrorCode VAR_RETURN_TYPE = new ParserErrorCode.con2('VAR_RETURN_TYPE', 105, "The return type cannot be 'var'");
+  static final ParserErrorCode VAR_TYPEDEF = new ParserErrorCode.con2('VAR_TYPEDEF', 106, "Type aliases cannot be declared to be 'var'");
+  static final ParserErrorCode VOID_PARAMETER = new ParserErrorCode.con2('VOID_PARAMETER', 107, "Parameters cannot have a type of 'void'");
+  static final ParserErrorCode VOID_VARIABLE = new ParserErrorCode.con2('VOID_VARIABLE', 108, "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_METHOD, CONST_TYPEDEF, CONSTRUCTOR_WITH_RETURN_TYPE, CONTINUE_OUTSIDE_OF_LOOP, CONTINUE_WITHOUT_LABEL_IN_CASE, 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, 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, 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_OPERATOR, STATIC_TOP_LEVEL_DECLARATION, TOP_LEVEL_OPERATOR, UNEXPECTED_TERMINATOR_FOR_PARAMETER_GROUP, UNEXPECTED_TOKEN, USE_OF_UNARY_PLUS_OPERATOR, WITH_BEFORE_EXTENDS, WITH_WITHOUT_EXTENDS, WRONG_SEPARATOR_FOR_NAMED_PARAMETER, WRONG_SEPARATOR_FOR_POSITIONAL_PARAMETER, WRONG_TERMINATOR_FOR_PARAMETER_GROUP, VAR_CLASS, VAR_RETURN_TYPE, VAR_TYPEDEF, VOID_PARAMETER, VOID_VARIABLE];
   String __name;
   int __ordinal = 0;
   int get ordinal => __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(String ___name, int ___ordinal, ErrorSeverity severity2, String message2) {
-    _jtd_constructor_275_impl(___name, ___ordinal, severity2, message2);
+    _jtd_constructor_301_impl(___name, ___ordinal, severity2, message2);
   }
-  _jtd_constructor_275_impl(String ___name, int ___ordinal, ErrorSeverity severity2, String message2) {
+  _jtd_constructor_301_impl(String ___name, int ___ordinal, ErrorSeverity severity2, String message2) {
     __name = ___name;
     __ordinal = ___ordinal;
     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(String ___name, int ___ordinal, String message) {
-    _jtd_constructor_276_impl(___name, ___ordinal, message);
+    _jtd_constructor_302_impl(___name, ___ordinal, message);
   }
-  _jtd_constructor_276_impl(String ___name, int ___ordinal, String message) {
-    _jtd_constructor_275_impl(___name, ___ordinal, ErrorSeverity.ERROR, message);
+  _jtd_constructor_302_impl(String ___name, int ___ordinal, String message) {
+    _jtd_constructor_301_impl(___name, ___ordinal, ErrorSeverity.ERROR, message);
   }
   ErrorSeverity get errorSeverity => _severity;
   String get message => _message;
   ErrorType get type => ErrorType.SYNTACTIC_ERROR;
   bool needsRecompilation() => true;
+  int compareTo(ParserErrorCode other) => __ordinal - other.__ordinal;
   String toString() => __name;
 }
 /**
  * Instances of the class {link ToFormattedSourceVisitor} write a source representation of a visited
  * AST node (and all of it's children) to a writer.
  */
 class ToFormattedSourceVisitor implements ASTVisitor<Object> {
   /**
    * The writer to which the source is to be written.
    */
@@ skipping 153 matching lines @@
       }
       if (identical(token, node.endToken)) {
         break;
       }
     }
     return null;
   }
   Object visitCommentReference(CommentReference node) => null;
   Object visitCompilationUnit(CompilationUnit node) {
     ScriptTag scriptTag7 = node.scriptTag;
-    NodeList<Directive> directives4 = node.directives;
+    NodeList<Directive> directives5 = node.directives;
     visit(scriptTag7);
     String prefix = scriptTag7 == null ? "" : " ";
-    visitList7(prefix, directives4, "\n");
-    prefix = scriptTag7 == null && directives4.isEmpty ? "" : "\n\n";
+    visitList7(prefix, directives5, "\n");
+    prefix = scriptTag7 == null && directives5.isEmpty ? "" : "\n\n";
     visitList7(prefix, node.declarations, "\n");
     return null;
   }
   Object visitConditionalExpression(ConditionalExpression node) {
     visit(node.condition);
     _writer.print(" ? ");
     visit(node.thenExpression);
     _writer.print(" : ");
     visit(node.elseExpression);
     return null;
@@ skipping 111 matching lines @@
     visit(node.loopVariable);
     _writer.print(" in ");
     visit(node.iterator);
     _writer.print(") ");
     visit(node.body);
     return null;
   }
   Object visitFormalParameterList(FormalParameterList node) {
     String groupEnd = null;
     _writer.print('(');
-    NodeList<FormalParameter> parameters14 = node.parameters;
-    int size7 = parameters14.length;
-    for (int i = 0; i < size7; i++) {
-      FormalParameter parameter = parameters14[i];
+    NodeList<FormalParameter> parameters16 = node.parameters;
+    int size8 = parameters16.length;
+    for (int i = 0; i < size8; i++) {
+      FormalParameter parameter = parameters16[i];
       if (i > 0) {
         _writer.print(", ");
       }
       if (groupEnd == null && parameter is DefaultFormalParameter) {
         if (identical(parameter.kind, ParameterKind.NAMED)) {
           groupEnd = "}";
           _writer.print('{');
         } else {
           groupEnd = "]";
           _writer.print('[');
@@ skipping 207 matching lines @@
     }
     visit(node.methodName);
     visit(node.argumentList);
     return null;
   }
   Object visitNamedExpression(NamedExpression node) {
     visit(node.name);
     visit7(" ", node.expression);
     return null;
   }
+  Object visitNativeFunctionBody(NativeFunctionBody node) {
+    _writer.print("native ");
+    visit(node.stringLiteral);
+    _writer.print(';');
+    return null;
+  }
   Object visitNullLiteral(NullLiteral node) {
     _writer.print("null");
     return null;
   }
   Object visitParenthesizedExpression(ParenthesizedExpression node) {
     _writer.print('(');
     visit(node.expression);
     _writer.print(')');
     return null;
   }
@@ skipping 266 matching lines @@
   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 size8 = nodes.length;
-      for (int i = 0; i < size8; i++) {
+      int size9 = nodes.length;
+      for (int i = 0; i < size9; 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 size9 = nodes.length;
-      if (size9 > 0) {
-        for (int i = 0; i < size9; i++) {
+      int size10 = nodes.length;
+      if (size10 > 0) {
+        for (int i = 0; i < size10; 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 size10 = nodes.length;
-      if (size10 > 0) {
+      int size11 = nodes.length;
+      if (size11 > 0) {
         _writer.print(prefix);
-        for (int i = 0; i < size10; i++) {
+        for (int i = 0; i < size11; i++) {
           if (i > 0) {
             _writer.print(separator);
           }
           nodes[i].accept(this);
         }
       }
     }
   }
 }