Remove trailing spaces in analyzer_experimental

pkg/analyzer_experimental/lib/src/generated/scanner.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.scanner;
-
 import 'dart:collection';
 import 'java_core.dart';
 import 'java_engine.dart';
 import 'source.dart';
 import 'error.dart';
 import 'instrumentation.dart';
-
-
 /**
  * Instances of the abstract class {@code KeywordState} represent a state in a state machine used to
  * scan keywords.
  * @coverage dart.engine.parser
  */
 class KeywordState {
-  
+
   /**
    * An empty transition table used by leaf states.
    */
   static List<KeywordState> _EMPTY_TABLE = new List<KeywordState>(26);
-  
+
   /**
    * The initial state in the state machine.
    */
   static KeywordState KEYWORD_STATE = createKeywordStateTable();
-  
+
   /**
    * Create the next state in the state machine where we have already recognized the subset of
    * strings in the given array of strings starting at the given offset and having the given length.
    * All of these strings have a common prefix and the next character is at the given start index.
    * @param start the index of the character in the strings used to transition to a new state
    * @param strings an array containing all of the strings that will be recognized by the state
    * machine
    * @param offset the offset of the first string in the array that has the prefix that is assumed
    * to have been recognized by the time we reach the state being built
    * @param length the number of strings in the array that pass through the state being built
@@ skipping 26 matching lines @@
     } else {
       assert(length2 == 1);
       return new KeywordState(_EMPTY_TABLE, strings[offset]);
     }
     if (isLeaf) {
       return new KeywordState(result, strings[offset]);
     } else {
       return new KeywordState(result, null);
     }
   }
-  
+
   /**
    * Create the initial state in the state machine.
    * @return the state that was created
    */
   static KeywordState createKeywordStateTable() {
     List<Keyword> values2 = Keyword.values;
     List<String> strings = new List<String>(values2.length);
     for (int i = 0; i < values2.length; i++) {
       strings[i] = values2[i].syntax;
     }
     strings.sort();
     return computeKeywordStateTable(0, strings, 0, strings.length);
   }
-  
+
   /**
    * A table mapping characters to the states to which those characters will transition. (The index
    * into the array is the offset from the character {@code 'a'} to the transitioning character.)
    */
   List<KeywordState> _table;
-  
+
   /**
    * The keyword that is recognized by this state, or {@code null} if this state is not a terminal
    * state.
    */
   Keyword _keyword2;
-  
+
   /**
    * Initialize a newly created state to have the given transitions and to recognize the keyword
    * with the given syntax.
    * @param table a table mapping characters to the states to which those characters will transition
    * @param syntax the syntax of the keyword that is recognized by the state
    */
   KeywordState(List<KeywordState> table, String syntax) {
     this._table = table;
     this._keyword2 = (syntax == null) ? null : Keyword.keywords[syntax];
   }
-  
+
   /**
    * Return the keyword that was recognized by this state, or {@code null} if this state does not
    * recognized a keyword.
    * @return the keyword that was matched by reaching this state
    */
   Keyword keyword() => _keyword2;
-  
+
   /**
    * Return the state that follows this state on a transition of the given character, or{@code null} if there is no valid state reachable from this state with such a transition.
    * @param c the character used to transition from this state to another state
    * @return the state that follows this state on a transition of the given character
    */
   KeywordState next(int c) => _table[c - 0x61];
 }
-
 /**
  * The enumeration {@code ScannerErrorCode} defines the error codes used for errors detected by the
  * scanner.
  * @coverage dart.engine.parser
  */
 class ScannerErrorCode implements Comparable<ScannerErrorCode>, ErrorCode {
   static final ScannerErrorCode ILLEGAL_CHARACTER = new ScannerErrorCode('ILLEGAL_CHARACTER', 0, "Illegal character %x");
   static final ScannerErrorCode MISSING_DIGIT = new ScannerErrorCode('MISSING_DIGIT', 1, "Decimal digit expected");
   static final ScannerErrorCode MISSING_HEX_DIGIT = new ScannerErrorCode('MISSING_HEX_DIGIT', 2, "Hexidecimal digit expected");
   static final ScannerErrorCode MISSING_QUOTE = new ScannerErrorCode('MISSING_QUOTE', 3, "Expected quote (' or \")");
   static final ScannerErrorCode UNTERMINATED_MULTI_LINE_COMMENT = new ScannerErrorCode('UNTERMINATED_MULTI_LINE_COMMENT', 4, "Unterminated multi-line comment");
   static final ScannerErrorCode UNTERMINATED_STRING_LITERAL = new ScannerErrorCode('UNTERMINATED_STRING_LITERAL', 5, "Unterminated string literal");
   static final List<ScannerErrorCode> values = [ILLEGAL_CHARACTER, MISSING_DIGIT, MISSING_HEX_DIGIT, MISSING_QUOTE, UNTERMINATED_MULTI_LINE_COMMENT, UNTERMINATED_STRING_LITERAL];
-  
+
   /// The name of this enum constant, as declared in the enum declaration.
   final String name;
-  
+
   /// The position in the enum declaration.
   final int ordinal;
-  
+
   /**
    * The 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 message.
    * @param message the message template used to create the message to be displayed for this error
    */
   ScannerErrorCode(this.name, this.ordinal, String message) {
     this._message = message;
   }
   ErrorSeverity get errorSeverity => ErrorSeverity.ERROR;
   String get message => _message;
   ErrorType get type => ErrorType.SYNTACTIC_ERROR;
   int compareTo(ScannerErrorCode other) => ordinal - other.ordinal;
   String toString() => name;
 }
-
 /**
  * Instances of the class {@code TokenWithComment} represent a string token that is preceded by
  * comments.
  * @coverage dart.engine.parser
  */
 class StringTokenWithComment extends StringToken {
-  
+
   /**
    * The first comment in the list of comments that precede this token.
    */
   Token _precedingComment;
-  
+
   /**
    * Initialize a newly created token to have the given type and offset and to be preceded by the
    * comments reachable from the given comment.
    * @param type the type of the token
    * @param offset the offset from the beginning of the file to the first character in the token
    * @param precedingComment the first comment in the list of comments that precede this token
    */
   StringTokenWithComment(TokenType type, String value, int offset, Token precedingComment) : super(type, value, offset) {
     this._precedingComment = precedingComment;
   }
   Token get precedingComments => _precedingComment;
 }
-
 /**
  * The enumeration {@code Keyword} defines the keywords in the Dart programming language.
  * @coverage dart.engine.parser
  */
 class Keyword implements Comparable<Keyword> {
   static final Keyword ASSERT = new Keyword.con1('ASSERT', 0, "assert");
   static final Keyword BREAK = new Keyword.con1('BREAK', 1, "break");
   static final Keyword CASE = new Keyword.con1('CASE', 2, "case");
   static final Keyword CATCH = new Keyword.con1('CATCH', 3, "catch");
   static final Keyword CLASS = new Keyword.con1('CLASS', 4, "class");
@@ skipping 34 matching lines @@
   static final Keyword GET = new Keyword.con2('GET', 39, "get", true);
   static final Keyword IMPLEMENTS = new Keyword.con2('IMPLEMENTS', 40, "implements", true);
   static final Keyword IMPORT = new Keyword.con2('IMPORT', 41, "import", true);
   static final Keyword LIBRARY = new Keyword.con2('LIBRARY', 42, "library", true);
   static final Keyword OPERATOR = new Keyword.con2('OPERATOR', 43, "operator", true);
   static final Keyword PART = new Keyword.con2('PART', 44, "part", true);
   static final Keyword SET = new Keyword.con2('SET', 45, "set", true);
   static final Keyword STATIC = new Keyword.con2('STATIC', 46, "static", true);
   static final Keyword TYPEDEF = new Keyword.con2('TYPEDEF', 47, "typedef", true);
   static final List<Keyword> values = [ASSERT, BREAK, CASE, CATCH, CLASS, CONST, CONTINUE, DEFAULT, DO, ELSE, ENUM, EXTENDS, FALSE, FINAL, FINALLY, FOR, IF, IN, IS, NEW, NULL, RETHROW, RETURN, SUPER, SWITCH, THIS, THROW, TRUE, TRY, VAR, VOID, WHILE, WITH, ABSTRACT, AS, DYNAMIC, EXPORT, EXTERNAL, FACTORY, GET, IMPLEMENTS, IMPORT, LIBRARY, OPERATOR, PART, SET, STATIC, TYPEDEF];
-  
+
   /// The name of this enum constant, as declared in the enum declaration.
   final String name;
-  
+
   /// The position in the enum declaration.
   final int ordinal;
-  
+
   /**
    * The lexeme for the keyword.
    */
   String _syntax;
-  
+
   /**
    * A flag indicating whether the keyword is a pseudo-keyword. Pseudo keywords can be used as
    * identifiers.
    */
   bool _isPseudoKeyword2 = false;
-  
+
   /**
    * A table mapping the lexemes of keywords to the corresponding keyword.
    */
   static Map<String, Keyword> keywords = createKeywordMap();
-  
+
   /**
    * Create a table mapping the lexemes of keywords to the corresponding keyword.
    * @return the table that was created
    */
   static Map<String, Keyword> createKeywordMap() {
     LinkedHashMap<String, Keyword> result = new LinkedHashMap<String, Keyword>();
     for (Keyword keyword in values) {
       result[keyword._syntax] = keyword;
     }
     return result;
   }
-  
+
   /**
    * Initialize a newly created keyword to have the given syntax. The keyword is not a
    * pseudo-keyword.
    * @param syntax the lexeme for the keyword
    */
   Keyword.con1(this.name, this.ordinal, String syntax) {
-    _jtd_constructor_316_impl(syntax);
+    _jtd_constructor_318_impl(syntax);
   }
-  _jtd_constructor_316_impl(String syntax) {
-    _jtd_constructor_317_impl(syntax, false);
+  _jtd_constructor_318_impl(String syntax) {
+    _jtd_constructor_319_impl(syntax, false);
   }
-  
+
   /**
    * Initialize a newly created keyword to have the given syntax. The keyword is a pseudo-keyword if
    * the given flag is {@code true}.
    * @param syntax the lexeme for the keyword
    * @param isPseudoKeyword {@code true} if this keyword is a pseudo-keyword
    */
   Keyword.con2(this.name, this.ordinal, String syntax2, bool isPseudoKeyword) {
-    _jtd_constructor_317_impl(syntax2, isPseudoKeyword);
+    _jtd_constructor_319_impl(syntax2, isPseudoKeyword);
   }
-  _jtd_constructor_317_impl(String syntax2, bool isPseudoKeyword) {
+  _jtd_constructor_319_impl(String syntax2, bool isPseudoKeyword) {
     this._syntax = syntax2;
     this._isPseudoKeyword2 = isPseudoKeyword;
   }
-  
+
   /**
    * Return the lexeme for the keyword.
    * @return the lexeme for the keyword
    */
   String get syntax => _syntax;
-  
+
   /**
    * Return {@code true} if this keyword is a pseudo-keyword. Pseudo keywords can be used as
    * identifiers.
    * @return {@code true} if this keyword is a pseudo-keyword
    */
   bool isPseudoKeyword() => _isPseudoKeyword2;
   int compareTo(Keyword other) => ordinal - other.ordinal;
   String toString() => name;
 }
-
 /**
  * The abstract class {@code AbstractScanner} implements a scanner for Dart code. Subclasses are
  * required to implement the interface used to access the characters being scanned.
  * <p>
  * The lexical structure of Dart is ambiguous without knowledge of the context in which a token is
  * being scanned. For example, without context we cannot determine whether source of the form "<<"
  * should be scanned as a single left-shift operator or as two left angle brackets. This scanner
  * does not have any context, so it always resolves such conflicts by scanning the longest possible
  * token.
  * @coverage dart.engine.parser
  */
 abstract class AbstractScanner {
-  
+
   /**
    * The source being scanned.
    */
   Source _source;
-  
+
   /**
    * The error listener that will be informed of any errors that are found during the scan.
    */
   AnalysisErrorListener _errorListener;
-  
+
   /**
    * The token pointing to the head of the linked list of tokens.
    */
   Token _tokens;
-  
+
   /**
    * The last token that was scanned.
    */
   Token _tail;
-  
+
   /**
    * The first token in the list of comment tokens found since the last non-comment token.
    */
   Token _firstComment;
-  
+
   /**
    * The last token in the list of comment tokens found since the last non-comment token.
    */
   Token _lastComment;
-  
+
   /**
    * The index of the first character of the current token.
    */
   int _tokenStart = 0;
-  
+
   /**
    * A list containing the offsets of the first character of each line in the source code.
    */
   List<int> _lineStarts = new List<int>();
-  
+
   /**
    * A list, treated something like a stack, of tokens representing the beginning of a matched pair.
    * It is used to pair the end tokens with the begin tokens.
    */
   List<BeginToken> _groupingStack = new List<BeginToken>();
-  
+
   /**
    * A flag indicating whether any unmatched groups were found during the parse.
    */
   bool _hasUnmatchedGroups2 = false;
-  
+
   /**
    * A non-breaking space, which is allowed by this scanner as a white-space character.
    */
   static int _$NBSP = 160;
-  
+
   /**
    * Initialize a newly created scanner.
    * @param source the source being scanned
    * @param errorListener the error listener that will be informed of any errors that are found
    */
   AbstractScanner(Source source, AnalysisErrorListener errorListener) {
     this._source = source;
     this._errorListener = errorListener;
     _tokens = new Token(TokenType.EOF, -1);
     _tokens.setNext(_tokens);
     _tail = _tokens;
     _tokenStart = -1;
     _lineStarts.add(0);
   }
-  
+
   /**
    * Return an array containing the offsets of the first character of each line in the source code.
    * @return an array containing the offsets of the first character of each line in the source code
    */
   List<int> get lineStarts => _lineStarts;
-  
+
   /**
    * Return the current offset relative to the beginning of the file. Return the initial offset if
    * the scanner has not yet scanned the source code, and one (1) past the end of the source code if
    * the source code has been scanned.
    * @return the current offset of the scanner in the source
    */
   int get offset;
-  
+
   /**
    * Return {@code true} if any unmatched groups were found during the parse.
    * @return {@code true} if any unmatched groups were found during the parse
    */
   bool hasUnmatchedGroups() => _hasUnmatchedGroups2;
-  
+
   /**
    * Scan the source code to produce a list of tokens representing the source.
    * @return the first token in the list of tokens that were produced
    */
   Token tokenize() {
     InstrumentationBuilder instrumentation = Instrumentation.builder2("dart.engine.AbstractScanner.tokenize");
     int tokenCounter = 0;
     try {
       int next = advance();
       while (next != -1) {
         tokenCounter++;
         next = bigSwitch(next);
       }
       appendEofToken();
       instrumentation.metric2("tokensCount", tokenCounter);
       return firstToken();
     } finally {
       instrumentation.log();
     }
   }
-  
+
   /**
    * Advance the current position and return the character at the new current position.
    * @return the character at the new current position
    */
   int advance();
-  
+
   /**
    * Return the substring of the source code between the start offset and the modified current
    * position. The current position is modified by adding the end delta.
    * @param start the offset to the beginning of the string, relative to the start of the file
    * @param endDelta the number of character after the current location to be included in the
    * string, or the number of characters before the current location to be excluded if the
    * offset is negative
    * @return the specified substring of the source code
    */
   String getString(int start, int endDelta);
-  
+
   /**
    * Return the character at the current position without changing the current position.
    * @return the character at the current position
    */
   int peek();
-  
+
   /**
    * Record the fact that we are at the beginning of a new line in the source.
    */
   void recordStartOfLine() {
     _lineStarts.add(offset);
   }
   void appendBeginToken(TokenType type) {
     BeginToken token;
     if (_firstComment == null) {
       token = new BeginToken(type, _tokenStart);
@@ skipping 234 matching lines @@
     }
     if (Character.isLetter(next)) {
       return tokenizeIdentifier(next, offset, true);
     }
     if (next == _$NBSP) {
       return advance();
     }
     reportError(ScannerErrorCode.ILLEGAL_CHARACTER, [next]);
     return advance();
   }
-  
+
   /**
    * Return the beginning token corresponding to a closing brace that was found while scanning
    * inside a string interpolation expression. Tokens that cannot be matched with the closing brace
    * will be dropped from the stack.
    * @return the token to be paired with the closing brace
    */
   BeginToken findTokenMatchingClosingBraceInInterpolationExpression() {
     int last = _groupingStack.length - 1;
     while (last >= 0) {
       BeginToken begin = _groupingStack[last];
       if (identical(begin.type, TokenType.OPEN_CURLY_BRACKET) || identical(begin.type, TokenType.STRING_INTERPOLATION_EXPRESSION)) {
         return begin;
       }
       _hasUnmatchedGroups2 = true;
       _groupingStack.removeAt(last);
       last--;
     }
     return null;
   }
   Token firstToken() => _tokens.next;
-  
+
   /**
    * Return the source being scanned.
    * @return the source being scanned
    */
   Source get source => _source;
-  
+
   /**
    * Report an error at the current offset.
    * @param errorCode the error code indicating the nature of the error
    * @param arguments any arguments needed to complete the error message
    */
   void reportError(ScannerErrorCode errorCode, List<Object> arguments) {
     _errorListener.onError(new AnalysisError.con2(source, offset, 1, errorCode, arguments));
   }
   int select(int choice, TokenType yesType, TokenType noType) {
     int next = advance();
@@ skipping 505 matching lines @@
   int tokenizeTilde(int next) {
     next = advance();
     if (next == 0x2F) {
       return select(0x3D, TokenType.TILDE_SLASH_EQ, TokenType.TILDE_SLASH);
     } else {
       appendToken(TokenType.TILDE);
       return next;
     }
   }
 }
-
 /**
  * Instances of the class {@code StringToken} represent a token whose value is independent of it's
  * type.
  * @coverage dart.engine.parser
  */
 class StringToken extends Token {
-  
+
   /**
    * The lexeme represented by this token.
    */
   String _value2;
-  
+
   /**
    * Initialize a newly created token to represent a token of the given type with the given value.
    * @param type the type of the token
    * @param value the lexeme represented by this token
    * @param offset the offset from the beginning of the file to the first character in the token
    */
   StringToken(TokenType type, String value, int offset) : super(type, offset) {
     this._value2 = StringUtilities.intern(value);
   }
   String get lexeme => _value2;
   String value() => _value2;
 }
-
 /**
  * Instances of the class {@code CharBufferScanner} implement a scanner that reads from a character
  * buffer. The scanning logic is in the superclass.
  * @coverage dart.engine.parser
  */
 class CharBufferScanner extends AbstractScanner {
-  
+
   /**
    * The buffer from which characters will be read.
    */
   CharBuffer _buffer;
-  
+
   /**
    * The number of characters in the buffer.
    */
   int _bufferLength = 0;
-  
+
   /**
    * The index of the last character that was read.
    */
   int _charOffset = 0;
-  
+
   /**
    * Initialize a newly created scanner to scan the characters in the given character buffer.
    * @param source the source being scanned
    * @param buffer the buffer from which characters will be read
    * @param errorListener the error listener that will be informed of any errors that are found
    */
   CharBufferScanner(Source source, CharBuffer buffer, AnalysisErrorListener errorListener) : super(source, errorListener) {
     this._buffer = buffer;
     this._bufferLength = buffer.length();
     this._charOffset = -1;
   }
   int get offset => _charOffset;
   int advance() {
     if (_charOffset + 1 >= _bufferLength) {
       return -1;
     }
     return _buffer.charAt(++_charOffset);
   }
   String getString(int start, int endDelta) => ((_buffer as CharSequence)).subSequence(start, _charOffset + 1 + endDelta).toString();
   int peek() {
     if (_charOffset + 1 >= _buffer.length()) {
       return -1;
     }
     return _buffer.charAt(_charOffset + 1);
   }
 }
-
 /**
  * Instances of the class {@code TokenWithComment} represent a normal token that is preceded by
  * comments.
  * @coverage dart.engine.parser
  */
 class TokenWithComment extends Token {
-  
+
   /**
    * The first comment in the list of comments that precede this token.
    */
   Token _precedingComment;
-  
+
   /**
    * Initialize a newly created token to have the given type and offset and to be preceded by the
    * comments reachable from the given comment.
    * @param type the type of the token
    * @param offset the offset from the beginning of the file to the first character in the token
    * @param precedingComment the first comment in the list of comments that precede this token
    */
   TokenWithComment(TokenType type, int offset, Token precedingComment) : super(type, offset) {
     this._precedingComment = precedingComment;
   }
   Token get precedingComments => _precedingComment;
 }
-
 /**
  * Instances of the class {@code Token} represent a token that was scanned from the input. Each
  * token knows which token follows it, acting as the head of a linked list of tokens.
  * @coverage dart.engine.parser
  */
 class Token {
-  
+
   /**
    * The type of the token.
    */
   TokenType _type;
-  
+
   /**
    * The offset from the beginning of the file to the first character in the token.
    */
   int _offset = 0;
-  
+
   /**
    * The previous token in the token stream.
    */
   Token _previous;
-  
+
   /**
    * The next token in the token stream.
    */
   Token _next;
-  
+
   /**
    * Initialize a newly created token to have the given type and offset.
    * @param type the type of the token
    * @param offset the offset from the beginning of the file to the first character in the token
    */
   Token(TokenType type, int offset) {
     this._type = type;
     this._offset = offset;
   }
-  
+
   /**
    * Return the offset from the beginning of the file to the character after last character of the
    * token.
    * @return the offset from the beginning of the file to the first character after last character
    * of the token
    */
   int get end => _offset + length;
-  
+
   /**
    * Return the number of characters in the node's source range.
    * @return the number of characters in the node's source range
    */
   int get length => lexeme.length;
-  
+
   /**
    * Return the lexeme that represents this token.
    * @return the lexeme that represents this token
    */
   String get lexeme => _type.lexeme;
-  
+
   /**
    * Return the next token in the token stream.
    * @return the next token in the token stream
    */
   Token get next => _next;
-  
+
   /**
    * Return the offset from the beginning of the file to the first character in the token.
    * @return the offset from the beginning of the file to the first character in the token
    */
   int get offset => _offset;
-  
+
   /**
    * Return the first comment in the list of comments that precede this token, or {@code null} if
    * there are no comments preceding this token. Additional comments can be reached by following the
    * token stream using {@link #getNext()} until {@code null} is returned.
    * @return the first comment in the list of comments that precede this token
    */
   Token get precedingComments => null;
-  
+
   /**
    * Return the previous token in the token stream.
    * @return the previous token in the token stream
    */
   Token get previous => _previous;
-  
+
   /**
    * Return the type of the token.
    * @return the type of the token
    */
   TokenType get type => _type;
-  
+
   /**
    * Return {@code true} if this token represents an operator.
    * @return {@code true} if this token represents an operator
    */
   bool isOperator() => _type.isOperator();
-  
+
   /**
    * Return {@code true} if this token is a synthetic token. A synthetic token is a token that was
    * introduced by the parser in order to recover from an error in the code. Synthetic tokens always
    * have a length of zero ({@code 0}).
    * @return {@code true} if this token is a synthetic token
    */
   bool isSynthetic() => length == 0;
-  
+
   /**
    * Return {@code true} if this token represents an operator that can be defined by users.
    * @return {@code true} if this token represents an operator that can be defined by users
    */
   bool isUserDefinableOperator() => _type.isUserDefinableOperator();
-  
+
   /**
    * Set the next token in the token stream to the given token. This has the side-effect of setting
    * this token to be the previous token for the given token.
    * @param token the next token in the token stream
    * @return the token that was passed in
    */
   Token setNext(Token token) {
     _next = token;
     token.previous = this;
     return token;
   }
-  
+
   /**
    * Set the next token in the token stream to the given token without changing which token is the
    * previous token for the given token.
    * @param token the next token in the token stream
    * @return the token that was passed in
    */
   Token setNextWithoutSettingPrevious(Token token) {
     _next = token;
     return token;
   }
-  
+
   /**
    * Set the offset from the beginning of the file to the first character in the token to the given
    * offset.
    * @param offset the offset from the beginning of the file to the first character in the token
    */
   void set offset(int offset2) {
     this._offset = offset2;
   }
   String toString() => lexeme;
-  
+
   /**
    * Return the value of this token. For keyword tokens, this is the keyword associated with the
    * token, for other tokens it is the lexeme associated with the token.
    * @return the value of this token
    */
   Object value() => _type.lexeme;
-  
+
   /**
    * Set the previous token in the token stream to the given token.
    * @param previous the previous token in the token stream
    */
   void set previous(Token previous2) {
     this._previous = previous2;
   }
 }
-
 /**
  * Instances of the class {@code StringScanner} implement a scanner that reads from a string. The
  * scanning logic is in the superclass.
  * @coverage dart.engine.parser
  */
 class StringScanner extends AbstractScanner {
-  
+
   /**
    * The offset from the beginning of the file to the beginning of the source being scanned.
    */
   int _offsetDelta = 0;
-  
+
   /**
    * The string from which characters will be read.
    */
   String _string;
-  
+
   /**
    * The number of characters in the string.
    */
   int _stringLength = 0;
-  
+
   /**
    * The index, relative to the string, of the last character that was read.
    */
   int _charOffset = 0;
-  
+
   /**
    * Initialize a newly created scanner to scan the characters in the given string.
    * @param source the source being scanned
    * @param string the string from which characters will be read
    * @param errorListener the error listener that will be informed of any errors that are found
    */
   StringScanner(Source source, String string, AnalysisErrorListener errorListener) : super(source, errorListener) {
     this._offsetDelta = 0;
     this._string = string;
     this._stringLength = string.length;
     this._charOffset = -1;
   }
   int get offset => _offsetDelta + _charOffset;
-  
+
   /**
    * Record that the source begins on the given line and column at the given offset. The line starts
    * for lines before the given line will not be correct.
    * <p>
    * This method must be invoked at most one time and must be invoked before scanning begins. The
    * values provided must be sensible. The results are undefined if these conditions are violated.
    * @param line the one-based index of the line containing the first character of the source
    * @param column the one-based index of the column in which the first character of the source
    * occurs
    * @param offset the zero-based offset from the beginning of the larger context to the first
@@ skipping 18 matching lines @@
     return _string.codeUnitAt(++_charOffset);
   }
   String getString(int start, int endDelta) => _string.substring(start - _offsetDelta, _charOffset + 1 + endDelta);
   int peek() {
     if (_charOffset + 1 >= _string.length) {
       return -1;
     }
     return _string.codeUnitAt(_charOffset + 1);
   }
 }
-
 /**
  * Instances of the class {@code BeginTokenWithComment} represent a begin token that is preceded by
  * comments.
  * @coverage dart.engine.parser
  */
 class BeginTokenWithComment extends BeginToken {
-  
+
   /**
    * The first comment in the list of comments that precede this token.
    */
   Token _precedingComment;
-  
+
   /**
    * Initialize a newly created token to have the given type and offset and to be preceded by the
    * comments reachable from the given comment.
    * @param type the type of the token
    * @param offset the offset from the beginning of the file to the first character in the token
    * @param precedingComment the first comment in the list of comments that precede this token
    */
   BeginTokenWithComment(TokenType type, int offset, Token precedingComment) : super(type, offset) {
     this._precedingComment = precedingComment;
   }
   Token get precedingComments => _precedingComment;
 }
-
 /**
  * Instances of the class {@code KeywordToken} represent a keyword in the language.
  * @coverage dart.engine.parser
  */
 class KeywordToken extends Token {
-  
+
   /**
    * The keyword being represented by this token.
    */
   Keyword _keyword;
-  
+
   /**
    * Initialize a newly created token to represent the given keyword.
    * @param keyword the keyword being represented by this token
    * @param offset the offset from the beginning of the file to the first character in the token
    */
   KeywordToken(Keyword keyword, int offset) : super(TokenType.KEYWORD, offset) {
     this._keyword = keyword;
   }
-  
+
   /**
    * Return the keyword being represented by this token.
    * @return the keyword being represented by this token
    */
   Keyword get keyword => _keyword;
   String get lexeme => _keyword.syntax;
   Keyword value() => _keyword;
 }
-
 /**
  * Instances of the class {@code BeginToken} represent the opening half of a grouping pair of
  * tokens. This is used for curly brackets ('{'), parentheses ('('), and square brackets ('\[').
  * @coverage dart.engine.parser
  */
 class BeginToken extends Token {
-  
+
   /**
    * The token that corresponds to this token.
    */
   Token _endToken;
-  
+
   /**
    * Initialize a newly created token representing the opening half of a grouping pair of tokens.
    * @param type the type of the token
    * @param offset the offset from the beginning of the file to the first character in the token
    */
   BeginToken(TokenType type, int offset) : super(type, offset) {
     assert((identical(type, TokenType.OPEN_CURLY_BRACKET) || identical(type, TokenType.OPEN_PAREN) || identical(type, TokenType.OPEN_SQUARE_BRACKET) || identical(type, TokenType.STRING_INTERPOLATION_EXPRESSION)));
   }
-  
+
   /**
    * Return the token that corresponds to this token.
    * @return the token that corresponds to this token
    */
   Token get endToken => _endToken;
-  
+
   /**
    * Set the token that corresponds to this token to the given token.
    * @param token the token that corresponds to this token
    */
   void set endToken(Token token) {
     this._endToken = token;
   }
 }
-
 /**
  * The enumeration {@code TokenClass} represents classes (or groups) of tokens with a similar use.
  * @coverage dart.engine.parser
  */
 class TokenClass implements Comparable<TokenClass> {
-  
+
   /**
    * A value used to indicate that the token type is not part of any specific class of token.
    */
   static final TokenClass NO_CLASS = new TokenClass.con1('NO_CLASS', 0);
-  
+
   /**
    * A value used to indicate that the token type is an additive operator.
    */
   static final TokenClass ADDITIVE_OPERATOR = new TokenClass.con2('ADDITIVE_OPERATOR', 1, 12);
-  
+
   /**
    * A value used to indicate that the token type is an assignment operator.
    */
   static final TokenClass ASSIGNMENT_OPERATOR = new TokenClass.con2('ASSIGNMENT_OPERATOR', 2, 1);
-  
+
   /**
    * A value used to indicate that the token type is a bitwise-and operator.
    */
   static final TokenClass BITWISE_AND_OPERATOR = new TokenClass.con2('BITWISE_AND_OPERATOR', 3, 8);
-  
+
   /**
    * A value used to indicate that the token type is a bitwise-or operator.
    */
   static final TokenClass BITWISE_OR_OPERATOR = new TokenClass.con2('BITWISE_OR_OPERATOR', 4, 6);
-  
+
   /**
    * A value used to indicate that the token type is a bitwise-xor operator.
    */
   static final TokenClass BITWISE_XOR_OPERATOR = new TokenClass.con2('BITWISE_XOR_OPERATOR', 5, 7);
-  
+
   /**
    * A value used to indicate that the token type is a cascade operator.
    */
   static final TokenClass CASCADE_OPERATOR = new TokenClass.con2('CASCADE_OPERATOR', 6, 2);
-  
+
   /**
    * A value used to indicate that the token type is a conditional operator.
    */
   static final TokenClass CONDITIONAL_OPERATOR = new TokenClass.con2('CONDITIONAL_OPERATOR', 7, 3);
-  
+
   /**
    * A value used to indicate that the token type is an equality operator.
    */
   static final TokenClass EQUALITY_OPERATOR = new TokenClass.con2('EQUALITY_OPERATOR', 8, 9);
-  
+
   /**
    * A value used to indicate that the token type is a logical-and operator.
    */
   static final TokenClass LOGICAL_AND_OPERATOR = new TokenClass.con2('LOGICAL_AND_OPERATOR', 9, 5);
-  
+
   /**
    * A value used to indicate that the token type is a logical-or operator.
    */
   static final TokenClass LOGICAL_OR_OPERATOR = new TokenClass.con2('LOGICAL_OR_OPERATOR', 10, 4);
-  
+
   /**
    * A value used to indicate that the token type is a multiplicative operator.
    */
   static final TokenClass MULTIPLICATIVE_OPERATOR = new TokenClass.con2('MULTIPLICATIVE_OPERATOR', 11, 13);
-  
+
   /**
    * A value used to indicate that the token type is a relational operator.
    */
   static final TokenClass RELATIONAL_OPERATOR = new TokenClass.con2('RELATIONAL_OPERATOR', 12, 10);
-  
+
   /**
    * A value used to indicate that the token type is a shift operator.
    */
   static final TokenClass SHIFT_OPERATOR = new TokenClass.con2('SHIFT_OPERATOR', 13, 11);
-  
+
   /**
    * A value used to indicate that the token type is a unary operator.
    */
   static final TokenClass UNARY_POSTFIX_OPERATOR = new TokenClass.con2('UNARY_POSTFIX_OPERATOR', 14, 15);
-  
+
   /**
    * A value used to indicate that the token type is a unary operator.
    */
   static final TokenClass UNARY_PREFIX_OPERATOR = new TokenClass.con2('UNARY_PREFIX_OPERATOR', 15, 14);
   static final List<TokenClass> values = [NO_CLASS, ADDITIVE_OPERATOR, ASSIGNMENT_OPERATOR, BITWISE_AND_OPERATOR, BITWISE_OR_OPERATOR, BITWISE_XOR_OPERATOR, CASCADE_OPERATOR, CONDITIONAL_OPERATOR, EQUALITY_OPERATOR, LOGICAL_AND_OPERATOR, LOGICAL_OR_OPERATOR, MULTIPLICATIVE_OPERATOR, RELATIONAL_OPERATOR, SHIFT_OPERATOR, UNARY_POSTFIX_OPERATOR, UNARY_PREFIX_OPERATOR];
-  
+
   /// The name of this enum constant, as declared in the enum declaration.
   final String name;
-  
+
   /// The position in the enum declaration.
   final int ordinal;
-  
+
   /**
    * The precedence of tokens of this class, or {@code 0} if the such tokens do not represent an
    * operator.
    */
   int _precedence = 0;
   TokenClass.con1(this.name, this.ordinal) {
-    _jtd_constructor_326_impl();
+    _jtd_constructor_328_impl();
   }
-  _jtd_constructor_326_impl() {
-    _jtd_constructor_327_impl(0);
+  _jtd_constructor_328_impl() {
+    _jtd_constructor_329_impl(0);
   }
   TokenClass.con2(this.name, this.ordinal, int precedence2) {
-    _jtd_constructor_327_impl(precedence2);
+    _jtd_constructor_329_impl(precedence2);
   }
-  _jtd_constructor_327_impl(int precedence2) {
+  _jtd_constructor_329_impl(int precedence2) {
     this._precedence = precedence2;
   }
-  
+
   /**
    * Return the precedence of tokens of this class, or {@code 0} if the such tokens do not represent
    * an operator.
    * @return the precedence of tokens of this class
    */
   int get precedence => _precedence;
   int compareTo(TokenClass other) => ordinal - other.ordinal;
   String toString() => name;
 }
-
 /**
  * Instances of the class {@code KeywordTokenWithComment} implement a keyword token that is preceded
  * by comments.
  * @coverage dart.engine.parser
  */
 class KeywordTokenWithComment extends KeywordToken {
-  
+
   /**
    * The first comment in the list of comments that precede this token.
    */
   Token _precedingComment;
-  
+
   /**
    * Initialize a newly created token to to represent the given keyword and to be preceded by the
    * comments reachable from the given comment.
    * @param keyword the keyword being represented by this token
    * @param offset the offset from the beginning of the file to the first character in the token
    * @param precedingComment the first comment in the list of comments that precede this token
    */
   KeywordTokenWithComment(Keyword keyword, int offset, Token precedingComment) : super(keyword, offset) {
     this._precedingComment = precedingComment;
   }
   Token get precedingComments => _precedingComment;
 }
-
 /**
  * The enumeration {@code TokenType} defines the types of tokens that can be returned by the
  * scanner.
  * @coverage dart.engine.parser
  */
 class TokenType implements Comparable<TokenType> {
-  
+
   /**
    * The type of the token that marks the end of the input.
    */
   static final TokenType EOF = new TokenType_EOF('EOF', 0, null, "");
   static final TokenType DOUBLE = new TokenType.con1('DOUBLE', 1);
   static final TokenType HEXADECIMAL = new TokenType.con1('HEXADECIMAL', 2);
   static final TokenType IDENTIFIER = new TokenType.con1('IDENTIFIER', 3);
   static final TokenType INT = new TokenType.con1('INT', 4);
   static final TokenType KEYWORD = new TokenType.con1('KEYWORD', 5);
   static final TokenType MULTI_LINE_COMMENT = new TokenType.con1('MULTI_LINE_COMMENT', 6);
@@ skipping 52 matching lines @@
   static final TokenType STAR_EQ = new TokenType.con2('STAR_EQ', 59, TokenClass.ASSIGNMENT_OPERATOR, "*=");
   static final TokenType STRING_INTERPOLATION_EXPRESSION = new TokenType.con2('STRING_INTERPOLATION_EXPRESSION', 60, null, "\${");
   static final TokenType STRING_INTERPOLATION_IDENTIFIER = new TokenType.con2('STRING_INTERPOLATION_IDENTIFIER', 61, null, "\$");
   static final TokenType TILDE = new TokenType.con2('TILDE', 62, TokenClass.UNARY_PREFIX_OPERATOR, "~");
   static final TokenType TILDE_SLASH = new TokenType.con2('TILDE_SLASH', 63, TokenClass.MULTIPLICATIVE_OPERATOR, "~/");
   static final TokenType TILDE_SLASH_EQ = new TokenType.con2('TILDE_SLASH_EQ', 64, TokenClass.ASSIGNMENT_OPERATOR, "~/=");
   static final TokenType BACKPING = new TokenType.con2('BACKPING', 65, null, "`");
   static final TokenType BACKSLASH = new TokenType.con2('BACKSLASH', 66, null, "\\");
   static final TokenType PERIOD_PERIOD_PERIOD = new TokenType.con2('PERIOD_PERIOD_PERIOD', 67, null, "...");
   static final List<TokenType> values = [EOF, DOUBLE, HEXADECIMAL, IDENTIFIER, INT, KEYWORD, MULTI_LINE_COMMENT, SCRIPT_TAG, SINGLE_LINE_COMMENT, STRING, AMPERSAND, AMPERSAND_AMPERSAND, AMPERSAND_EQ, AT, BANG, BANG_EQ, BAR, BAR_BAR, BAR_EQ, COLON, COMMA, CARET, CARET_EQ, CLOSE_CURLY_BRACKET, CLOSE_PAREN, CLOSE_SQUARE_BRACKET, EQ, EQ_EQ, FUNCTION, GT, GT_EQ, GT_GT, GT_GT_EQ, HASH, INDEX, INDEX_EQ, IS, LT, LT_EQ, LT_LT, LT_LT_EQ, MINUS, MINUS_EQ, MINUS_MINUS, OPEN_CURLY_BRACKET, OPEN_PAREN, OPEN_SQUARE_BRACKET, PERCENT, PERCENT_EQ, PERIOD, PERIOD_PERIOD, PLUS, PLUS_EQ, PLUS_PLUS, QUESTION, SEMICOLON, SLASH, SLASH_EQ, STAR, STAR_EQ, STRING_INTERPOLATION_EXPRESSION, STRING_INTERPOLATION_IDENTIFIER, TILDE, TILDE_SLASH, TILDE_SLASH_EQ, BACKPING, BACKSLASH, PERIOD_PERIOD_PERIOD];
-  
+
   /// The name of this enum constant, as declared in the enum declaration.
   final String name;
-  
+
   /// The position in the enum declaration.
   final int ordinal;
-  
+
   /**
    * The class of the token.
    */
   TokenClass _tokenClass;
-  
+
   /**
    * The lexeme that defines this type of token, or {@code null} if there is more than one possible
    * lexeme for this type of token.
    */
   String _lexeme;
   TokenType.con1(this.name, this.ordinal) {
-    _jtd_constructor_328_impl();
+    _jtd_constructor_330_impl();
   }
-  _jtd_constructor_328_impl() {
-    _jtd_constructor_329_impl(TokenClass.NO_CLASS, null);
+  _jtd_constructor_330_impl() {
+    _jtd_constructor_331_impl(TokenClass.NO_CLASS, null);
   }
   TokenType.con2(this.name, this.ordinal, TokenClass tokenClass2, String lexeme2) {
-    _jtd_constructor_329_impl(tokenClass2, lexeme2);
+    _jtd_constructor_331_impl(tokenClass2, lexeme2);
   }
-  _jtd_constructor_329_impl(TokenClass tokenClass2, String lexeme2) {
+  _jtd_constructor_331_impl(TokenClass tokenClass2, String lexeme2) {
     this._tokenClass = tokenClass2 == null ? TokenClass.NO_CLASS : tokenClass2;
     this._lexeme = lexeme2;
   }
-  
+
   /**
    * Return the lexeme that defines this type of token, or {@code null} if there is more than one
    * possible lexeme for this type of token.
    * @return the lexeme that defines this type of token
    */
   String get lexeme => _lexeme;
-  
+
   /**
    * Return the precedence of the token, or {@code 0} if the token does not represent an operator.
    * @return the precedence of the token
    */
   int get precedence => _tokenClass.precedence;
-  
+
   /**
    * Return {@code true} if this type of token represents an additive operator.
    * @return {@code true} if this type of token represents an additive operator
    */
   bool isAdditiveOperator() => identical(_tokenClass, TokenClass.ADDITIVE_OPERATOR);
-  
+
   /**
    * Return {@code true} if this type of token represents an assignment operator.
    * @return {@code true} if this type of token represents an assignment operator
    */
   bool isAssignmentOperator() => identical(_tokenClass, TokenClass.ASSIGNMENT_OPERATOR);
-  
+
   /**
    * Return {@code true} if this type of token represents an associative operator. An associative
    * operator is an operator for which the following equality is true:{@code (a * b) * c == a * (b * c)}. In other words, if the result of applying the operator to
    * multiple operands does not depend on the order in which those applications occur.
    * <p>
    * Note: This method considers the logical-and and logical-or operators to be associative, even
    * though the order in which the application of those operators can have an effect because
    * evaluation of the right-hand operand is conditional.
    * @return {@code true} if this type of token represents an associative operator
    */
   bool isAssociativeOperator() => identical(this, AMPERSAND) || identical(this, AMPERSAND_AMPERSAND) || identical(this, BAR) || identical(this, BAR_BAR) || identical(this, CARET) || identical(this, PLUS) || identical(this, STAR);
-  
+
   /**
    * Return {@code true} if this type of token represents an equality operator.
    * @return {@code true} if this type of token represents an equality operator
    */
   bool isEqualityOperator() => identical(_tokenClass, TokenClass.EQUALITY_OPERATOR);
-  
+
   /**
    * Return {@code true} if this type of token represents an increment operator.
    * @return {@code true} if this type of token represents an increment operator
    */
   bool isIncrementOperator() => identical(_lexeme, "++") || identical(_lexeme, "--");
-  
+
   /**
    * Return {@code true} if this type of token represents a multiplicative operator.
    * @return {@code true} if this type of token represents a multiplicative operator
    */
   bool isMultiplicativeOperator() => identical(_tokenClass, TokenClass.MULTIPLICATIVE_OPERATOR);
-  
+
   /**
    * Return {@code true} if this token type represents an operator.
    * @return {@code true} if this token type represents an operator
    */
   bool isOperator() => _tokenClass != TokenClass.NO_CLASS && this != OPEN_PAREN && this != OPEN_SQUARE_BRACKET && this != PERIOD;
-  
+
   /**
    * Return {@code true} if this type of token represents a relational operator.
    * @return {@code true} if this type of token represents a relational operator
    */
   bool isRelationalOperator() => identical(_tokenClass, TokenClass.RELATIONAL_OPERATOR);
-  
+
   /**
    * Return {@code true} if this type of token represents a shift operator.
    * @return {@code true} if this type of token represents a shift operator
    */
   bool isShiftOperator() => identical(_tokenClass, TokenClass.SHIFT_OPERATOR);
-  
+
   /**
    * Return {@code true} if this type of token represents a unary postfix operator.
    * @return {@code true} if this type of token represents a unary postfix operator
    */
   bool isUnaryPostfixOperator() => identical(_tokenClass, TokenClass.UNARY_POSTFIX_OPERATOR);
-  
+
   /**
    * Return {@code true} if this type of token represents a unary prefix operator.
    * @return {@code true} if this type of token represents a unary prefix operator
    */
   bool isUnaryPrefixOperator() => identical(_tokenClass, TokenClass.UNARY_PREFIX_OPERATOR);
-  
+
   /**
    * Return {@code true} if this token type represents an operator that can be defined by users.
    * @return {@code true} if this token type represents an operator that can be defined by users
    */
   bool isUserDefinableOperator() => identical(_lexeme, "==") || identical(_lexeme, "~") || identical(_lexeme, "[]") || identical(_lexeme, "[]=") || identical(_lexeme, "*") || identical(_lexeme, "/") || identical(_lexeme, "%") || identical(_lexeme, "~/") || identical(_lexeme, "+") || identical(_lexeme, "-") || identical(_lexeme, "<<") || identical(_lexeme, ">>") || identical(_lexeme, ">=") || identical(_lexeme, ">") || identical(_lexeme, "<=") || identical(_lexeme, "<") || identical(_lexeme, "&") || identical(_lexeme, "^") || identical(_lexeme, "|");
   int compareTo(TokenType other) => ordinal - other.ordinal;
   String toString() => name;
 }
 class TokenType_EOF extends TokenType {
   TokenType_EOF(String name, int ordinal, TokenClass arg0, String arg1) : super.con2(name, ordinal, arg0, arg1);
   String toString() => "-eof-";
 }