| Index: pkg/analyzer_experimental/lib/src/generated/scanner.dart
|
| diff --git a/pkg/analyzer_experimental/lib/src/generated/scanner.dart b/pkg/analyzer_experimental/lib/src/generated/scanner.dart
|
| deleted file mode 100644
|
| index e60e57a37b885620b2c8fb47fec024610282d52d..0000000000000000000000000000000000000000
|
| --- a/pkg/analyzer_experimental/lib/src/generated/scanner.dart
|
| +++ /dev/null
|
| @@ -1,2294 +0,0 @@
|
| -// 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';
|
| -import 'utilities_collection.dart' show TokenMap;
|
| -/**
|
| - * Instances of the abstract class `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
|
| - * @return the state that was created
|
| - */
|
| - static KeywordState computeKeywordStateTable(int start, List<String> strings, int offset, int length) {
|
| - List<KeywordState> result = new List<KeywordState>(26);
|
| - assert(length != 0);
|
| - int chunk = 0x0;
|
| - int chunkStart = -1;
|
| - bool isLeaf = false;
|
| - for (int i = offset; i < offset + length; i++) {
|
| - if (strings[i].length == start) {
|
| - isLeaf = true;
|
| - }
|
| - if (strings[i].length > start) {
|
| - int c = strings[i].codeUnitAt(start);
|
| - if (chunk != c) {
|
| - if (chunkStart != -1) {
|
| - result[chunk - 0x61] = computeKeywordStateTable(start + 1, strings, chunkStart, i - chunkStart);
|
| - }
|
| - chunkStart = i;
|
| - chunk = c;
|
| - }
|
| - }
|
| - }
|
| - if (chunkStart != -1) {
|
| - assert(result[chunk - 0x61] == null);
|
| - result[chunk - 0x61] = computeKeywordStateTable(start + 1, strings, chunkStart, offset + length - chunkStart);
|
| - } else {
|
| - assert(length == 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> values = Keyword.values;
|
| - List<String> strings = new List<String>(values.length);
|
| - for (int i = 0; i < values.length; i++) {
|
| - strings[i] = values[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 `'a'` to the transitioning character.)
|
| - */
|
| - List<KeywordState> _table;
|
| -
|
| - /**
|
| - * The keyword that is recognized by this state, or `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 `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
|
| - * `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 `ScannerErrorCode` defines the error codes used for errors detected by the
|
| - * scanner.
|
| - *
|
| - * @coverage dart.engine.parser
|
| - */
|
| -class ScannerErrorCode extends Enum<ScannerErrorCode> implements ErrorCode {
|
| - static final ScannerErrorCode CHARACTER_EXPECTED_AFTER_SLASH = new ScannerErrorCode.con1('CHARACTER_EXPECTED_AFTER_SLASH', 0, "Character expected after slash");
|
| - static final ScannerErrorCode ILLEGAL_CHARACTER = new ScannerErrorCode.con1('ILLEGAL_CHARACTER', 1, "Illegal character %x");
|
| - static final ScannerErrorCode MISSING_DIGIT = new ScannerErrorCode.con1('MISSING_DIGIT', 2, "Decimal digit expected");
|
| - static final ScannerErrorCode MISSING_HEX_DIGIT = new ScannerErrorCode.con1('MISSING_HEX_DIGIT', 3, "Hexidecimal digit expected");
|
| - static final ScannerErrorCode MISSING_QUOTE = new ScannerErrorCode.con1('MISSING_QUOTE', 4, "Expected quote (' or \")");
|
| - static final ScannerErrorCode UNTERMINATED_MULTI_LINE_COMMENT = new ScannerErrorCode.con1('UNTERMINATED_MULTI_LINE_COMMENT', 5, "Unterminated multi-line comment");
|
| - static final ScannerErrorCode UNTERMINATED_STRING_LITERAL = new ScannerErrorCode.con1('UNTERMINATED_STRING_LITERAL', 6, "Unterminated string literal");
|
| - static final List<ScannerErrorCode> values = [
|
| - CHARACTER_EXPECTED_AFTER_SLASH,
|
| - ILLEGAL_CHARACTER,
|
| - MISSING_DIGIT,
|
| - MISSING_HEX_DIGIT,
|
| - MISSING_QUOTE,
|
| - UNTERMINATED_MULTI_LINE_COMMENT,
|
| - UNTERMINATED_STRING_LITERAL];
|
| -
|
| - /**
|
| - * The template used to create the message to be displayed for this error.
|
| - */
|
| - String _message;
|
| -
|
| - /**
|
| - * The template used to create the correction to be displayed for this error, or `null` if
|
| - * there is no correction information for this error.
|
| - */
|
| - String correction10;
|
| -
|
| - /**
|
| - * 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.con1(String name, int ordinal, String message) : super(name, ordinal) {
|
| - this._message = message;
|
| - }
|
| -
|
| - /**
|
| - * Initialize a newly created error code to have the given message and correction.
|
| - *
|
| - * @param message the template used to create the message to be displayed for the error
|
| - * @param correction the template used to create the correction to be displayed for the error
|
| - */
|
| - ScannerErrorCode.con2(String name, int ordinal, String message, String correction) : super(name, ordinal) {
|
| - this._message = message;
|
| - this.correction10 = correction;
|
| - }
|
| - String get correction => correction10;
|
| - ErrorSeverity get errorSeverity => ErrorSeverity.ERROR;
|
| - String get message => _message;
|
| - ErrorType get type => ErrorType.SYNTACTIC_ERROR;
|
| -}
|
| -/**
|
| - * Instances of the class `SubSequenceReader` implement a [CharacterReader] that reads
|
| - * characters from a character sequence, but adds a delta when reporting the current character
|
| - * offset so that the character sequence can be a subsequence from a larger sequence.
|
| - */
|
| -class SubSequenceReader extends CharSequenceReader {
|
| -
|
| - /**
|
| - * The offset from the beginning of the file to the beginning of the source being scanned.
|
| - */
|
| - int _offsetDelta = 0;
|
| -
|
| - /**
|
| - * Initialize a newly created reader to read the characters in the given sequence.
|
| - *
|
| - * @param sequence the sequence from which characters will be read
|
| - * @param offsetDelta the offset from the beginning of the file to the beginning of the source
|
| - * being scanned
|
| - */
|
| - SubSequenceReader(CharSequence sequence, int offsetDelta) : super(sequence) {
|
| - this._offsetDelta = offsetDelta;
|
| - }
|
| - int get offset => _offsetDelta + super.offset;
|
| - String getString(int start, int endDelta) => super.getString(start - _offsetDelta, endDelta);
|
| - void set offset(int offset) {
|
| - super.offset = offset - _offsetDelta;
|
| - }
|
| -}
|
| -/**
|
| - * Instances of the class `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 copy() => new StringTokenWithComment(type, lexeme, offset, copyComments(_precedingComment));
|
| - Token get precedingComments => _precedingComment;
|
| - void applyDelta(int delta) {
|
| - super.applyDelta(delta);
|
| - Token token = _precedingComment;
|
| - while (token != null) {
|
| - token.applyDelta(delta);
|
| - token = token.next;
|
| - }
|
| - }
|
| -}
|
| -/**
|
| - * The enumeration `Keyword` defines the keywords in the Dart programming language.
|
| - *
|
| - * @coverage dart.engine.parser
|
| - */
|
| -class Keyword extends Enum<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");
|
| - static final Keyword CONST = new Keyword.con1('CONST', 5, "const");
|
| - static final Keyword CONTINUE = new Keyword.con1('CONTINUE', 6, "continue");
|
| - static final Keyword DEFAULT = new Keyword.con1('DEFAULT', 7, "default");
|
| - static final Keyword DO = new Keyword.con1('DO', 8, "do");
|
| - static final Keyword ELSE = new Keyword.con1('ELSE', 9, "else");
|
| - static final Keyword ENUM = new Keyword.con1('ENUM', 10, "enum");
|
| - static final Keyword EXTENDS = new Keyword.con1('EXTENDS', 11, "extends");
|
| - static final Keyword FALSE = new Keyword.con1('FALSE', 12, "false");
|
| - static final Keyword FINAL = new Keyword.con1('FINAL', 13, "final");
|
| - static final Keyword FINALLY = new Keyword.con1('FINALLY', 14, "finally");
|
| - static final Keyword FOR = new Keyword.con1('FOR', 15, "for");
|
| - static final Keyword IF = new Keyword.con1('IF', 16, "if");
|
| - static final Keyword IN = new Keyword.con1('IN', 17, "in");
|
| - static final Keyword IS = new Keyword.con1('IS', 18, "is");
|
| - static final Keyword NEW = new Keyword.con1('NEW', 19, "new");
|
| - static final Keyword NULL = new Keyword.con1('NULL', 20, "null");
|
| - static final Keyword RETHROW = new Keyword.con1('RETHROW', 21, "rethrow");
|
| - static final Keyword RETURN = new Keyword.con1('RETURN', 22, "return");
|
| - static final Keyword SUPER = new Keyword.con1('SUPER', 23, "super");
|
| - static final Keyword SWITCH = new Keyword.con1('SWITCH', 24, "switch");
|
| - static final Keyword THIS = new Keyword.con1('THIS', 25, "this");
|
| - static final Keyword THROW = new Keyword.con1('THROW', 26, "throw");
|
| - static final Keyword TRUE = new Keyword.con1('TRUE', 27, "true");
|
| - static final Keyword TRY = new Keyword.con1('TRY', 28, "try");
|
| - static final Keyword VAR = new Keyword.con1('VAR', 29, "var");
|
| - static final Keyword VOID = new Keyword.con1('VOID', 30, "void");
|
| - static final Keyword WHILE = new Keyword.con1('WHILE', 31, "while");
|
| - static final Keyword WITH = new Keyword.con1('WITH', 32, "with");
|
| - static final Keyword ABSTRACT = new Keyword.con2('ABSTRACT', 33, "abstract", true);
|
| - static final Keyword AS = new Keyword.con2('AS', 34, "as", true);
|
| - static final Keyword DYNAMIC = new Keyword.con2('DYNAMIC', 35, "dynamic", true);
|
| - static final Keyword EXPORT = new Keyword.con2('EXPORT', 36, "export", true);
|
| - static final Keyword EXTERNAL = new Keyword.con2('EXTERNAL', 37, "external", true);
|
| - static final Keyword FACTORY = new Keyword.con2('FACTORY', 38, "factory", true);
|
| - 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 lexeme for the keyword.
|
| - */
|
| - String syntax;
|
| -
|
| - /**
|
| - * A flag indicating whether the keyword is a pseudo-keyword. Pseudo keywords can be used as
|
| - * identifiers.
|
| - */
|
| - bool isPseudoKeyword = 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(String name, int ordinal, String syntax) : this.con2(name, ordinal, syntax, false);
|
| -
|
| - /**
|
| - * Initialize a newly created keyword to have the given syntax. The keyword is a pseudo-keyword if
|
| - * the given flag is `true`.
|
| - *
|
| - * @param syntax the lexeme for the keyword
|
| - * @param isPseudoKeyword `true` if this keyword is a pseudo-keyword
|
| - */
|
| - Keyword.con2(String name, int ordinal, String syntax, bool isPseudoKeyword) : super(name, ordinal) {
|
| - this.syntax = syntax;
|
| - this.isPseudoKeyword = isPseudoKeyword;
|
| - }
|
| -}
|
| -/**
|
| - * Instances of the class `CharSequenceReader` implement a [CharacterReader] that reads
|
| - * characters from a character sequence.
|
| - */
|
| -class CharSequenceReader implements CharacterReader {
|
| -
|
| - /**
|
| - * The sequence from which characters will be read.
|
| - */
|
| - CharSequence _sequence;
|
| -
|
| - /**
|
| - * 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 reader to read the characters in the given sequence.
|
| - *
|
| - * @param sequence the sequence from which characters will be read
|
| - */
|
| - CharSequenceReader(CharSequence sequence) {
|
| - this._sequence = sequence;
|
| - this._stringLength = sequence.length();
|
| - this._charOffset = -1;
|
| - }
|
| - int advance() {
|
| - if (_charOffset + 1 >= _stringLength) {
|
| - return -1;
|
| - }
|
| - return _sequence.charAt(++_charOffset);
|
| - }
|
| - int get offset => _charOffset;
|
| - String getString(int start, int endDelta) => _sequence.subSequence(start, _charOffset + 1 + endDelta).toString();
|
| - int peek() {
|
| - if (_charOffset + 1 >= _sequence.length()) {
|
| - return -1;
|
| - }
|
| - return _sequence.charAt(_charOffset + 1);
|
| - }
|
| - void set offset(int offset) {
|
| - _charOffset = offset;
|
| - }
|
| -}
|
| -/**
|
| - * Instances of the class `IncrementalScanner` implement a scanner that scans a subset of a
|
| - * string and inserts the resulting tokens into the middle of an existing token stream.
|
| - *
|
| - * @coverage dart.engine.parser
|
| - */
|
| -class IncrementalScanner extends Scanner {
|
| -
|
| - /**
|
| - * The reader used to access the characters in the source.
|
| - */
|
| - CharacterReader _reader;
|
| -
|
| - /**
|
| - * A map from tokens that were copied to the copies of the tokens.
|
| - */
|
| - TokenMap _tokenMap = new TokenMap();
|
| -
|
| - /**
|
| - * Initialize a newly created scanner.
|
| - *
|
| - * @param source the source being scanned
|
| - * @param reader the character reader used to read the characters in the source
|
| - * @param errorListener the error listener that will be informed of any errors that are found
|
| - */
|
| - IncrementalScanner(Source source, CharacterReader reader, AnalysisErrorListener errorListener) : super(source, reader, errorListener) {
|
| - this._reader = reader;
|
| - }
|
| -
|
| - /**
|
| - * Given the stream of tokens scanned from the original source, the modified source (the result of
|
| - * replacing one contiguous range of characters with another string of characters), and a
|
| - * specification of the modification that was made, return a stream of tokens scanned from the
|
| - * modified source. The original stream of tokens will not be modified.
|
| - *
|
| - * @param originalStream the stream of tokens scanned from the original source
|
| - * @param index the index of the first character in both the original and modified source that was
|
| - * affected by the modification
|
| - * @param removedLength the number of characters removed from the original source
|
| - * @param insertedLength the number of characters added to the modified source
|
| - */
|
| - Token rescan(Token originalStream, int index, int removedLength, int insertedLength) {
|
| - while (originalStream.end < index) {
|
| - originalStream = copyAndAdvance(originalStream, 0);
|
| - }
|
| - int modifiedEnd = index + insertedLength - 1;
|
| - _reader.offset = Math.min(originalStream.offset, index) - 1;
|
| - int next = _reader.advance();
|
| - while (next != -1 && _reader.offset <= modifiedEnd) {
|
| - next = bigSwitch(next);
|
| - }
|
| - int removedEnd = index + removedLength - 1;
|
| - while (originalStream.offset <= removedEnd) {
|
| - originalStream = originalStream.next;
|
| - }
|
| - int delta = insertedLength - removedLength;
|
| - while (originalStream.type != TokenType.EOF) {
|
| - originalStream = copyAndAdvance(originalStream, delta);
|
| - }
|
| - copyAndAdvance(originalStream, delta);
|
| - return firstToken();
|
| - }
|
| - Token copyAndAdvance(Token originalToken, int delta) {
|
| - Token copiedToken = originalToken.copy();
|
| - _tokenMap.put(originalToken, copiedToken);
|
| - copiedToken.applyDelta(delta);
|
| - appendToken(copiedToken);
|
| - Token originalComment = originalToken.precedingComments;
|
| - Token copiedComment = originalToken.precedingComments;
|
| - while (originalComment != null) {
|
| - _tokenMap.put(originalComment, copiedComment);
|
| - originalComment = originalComment.next;
|
| - copiedComment = copiedComment.next;
|
| - }
|
| - return originalToken.next;
|
| - }
|
| -}
|
| -/**
|
| - * The class `Scanner` implements a scanner for Dart code.
|
| - *
|
| - * 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
|
| - */
|
| -class Scanner {
|
| -
|
| - /**
|
| - * The source being scanned.
|
| - */
|
| - Source source;
|
| -
|
| - /**
|
| - * The reader used to access the characters in the source.
|
| - */
|
| - CharacterReader _reader;
|
| -
|
| - /**
|
| - * 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>();
|
| -
|
| - /**
|
| - * The index of the last item in the [groupingStack], or `-1` if the stack is empty.
|
| - */
|
| - int _stackEnd = -1;
|
| -
|
| - /**
|
| - * A flag indicating whether any unmatched groups were found during the parse.
|
| - */
|
| - bool _hasUnmatchedGroups2 = false;
|
| -
|
| - /**
|
| - * Initialize a newly created scanner.
|
| - *
|
| - * @param source the source being scanned
|
| - * @param reader the character reader used to read the characters in the source
|
| - * @param errorListener the error listener that will be informed of any errors that are found
|
| - */
|
| - Scanner(Source source, CharacterReader reader, AnalysisErrorListener errorListener) {
|
| - this.source = source;
|
| - this._reader = reader;
|
| - 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 `true` if any unmatched groups were found during the parse.
|
| - *
|
| - * @return `true` if any unmatched groups were found during the parse
|
| - */
|
| - bool hasUnmatchedGroups() => _hasUnmatchedGroups2;
|
| -
|
| - /**
|
| - * Record that the source begins on the given line and column at the current offset as given by
|
| - * the reader. The line starts for lines before the given line will not be correct.
|
| - *
|
| - * 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
|
| - */
|
| - void setSourceStart(int line, int column) {
|
| - int offset = _reader.offset;
|
| - if (line < 1 || column < 1 || offset < 0 || (line + column - 2) >= offset) {
|
| - return;
|
| - }
|
| - for (int i = 2; i < line; i++) {
|
| - _lineStarts.add(1);
|
| - }
|
| - _lineStarts.add(offset - column + 1);
|
| - }
|
| -
|
| - /**
|
| - * 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 = _reader.advance();
|
| - while (next != -1) {
|
| - tokenCounter++;
|
| - next = bigSwitch(next);
|
| - }
|
| - appendEofToken();
|
| - instrumentation.metric2("tokensCount", tokenCounter);
|
| - return firstToken();
|
| - } finally {
|
| - instrumentation.log2(2);
|
| - }
|
| - }
|
| -
|
| - /**
|
| - * Append the given token to the end of the token stream being scanned. This method is intended to
|
| - * be used by subclasses that copy existing tokens and should not normally be used because it will
|
| - * fail to correctly associate any comments with the token being passed in.
|
| - *
|
| - * @param token the token to be appended
|
| - */
|
| - void appendToken(Token token) {
|
| - _tail = _tail.setNext(token);
|
| - }
|
| - int bigSwitch(int next) {
|
| - beginToken();
|
| - if (next == 0xD) {
|
| - next = _reader.advance();
|
| - if (next == 0xA) {
|
| - next = _reader.advance();
|
| - }
|
| - recordStartOfLine();
|
| - return next;
|
| - } else if (next == 0xA) {
|
| - next = _reader.advance();
|
| - recordStartOfLine();
|
| - return next;
|
| - } else if (next == 0x9 || next == 0x20) {
|
| - return _reader.advance();
|
| - }
|
| - if (next == 0x72) {
|
| - int peek = _reader.peek();
|
| - if (peek == 0x22 || peek == 0x27) {
|
| - int start = _reader.offset;
|
| - return tokenizeString(_reader.advance(), start, true);
|
| - }
|
| - }
|
| - if (0x61 <= next && next <= 0x7A) {
|
| - return tokenizeKeywordOrIdentifier(next, true);
|
| - }
|
| - if ((0x41 <= next && next <= 0x5A) || next == 0x5F || next == 0x24) {
|
| - return tokenizeIdentifier(next, _reader.offset, true);
|
| - }
|
| - if (next == 0x3C) {
|
| - return tokenizeLessThan(next);
|
| - }
|
| - if (next == 0x3E) {
|
| - return tokenizeGreaterThan(next);
|
| - }
|
| - if (next == 0x3D) {
|
| - return tokenizeEquals(next);
|
| - }
|
| - if (next == 0x21) {
|
| - return tokenizeExclamation(next);
|
| - }
|
| - if (next == 0x2B) {
|
| - return tokenizePlus(next);
|
| - }
|
| - if (next == 0x2D) {
|
| - return tokenizeMinus(next);
|
| - }
|
| - if (next == 0x2A) {
|
| - return tokenizeMultiply(next);
|
| - }
|
| - if (next == 0x25) {
|
| - return tokenizePercent(next);
|
| - }
|
| - if (next == 0x26) {
|
| - return tokenizeAmpersand(next);
|
| - }
|
| - if (next == 0x7C) {
|
| - return tokenizeBar(next);
|
| - }
|
| - if (next == 0x5E) {
|
| - return tokenizeCaret(next);
|
| - }
|
| - if (next == 0x5B) {
|
| - return tokenizeOpenSquareBracket(next);
|
| - }
|
| - if (next == 0x7E) {
|
| - return tokenizeTilde(next);
|
| - }
|
| - if (next == 0x5C) {
|
| - appendToken2(TokenType.BACKSLASH);
|
| - return _reader.advance();
|
| - }
|
| - if (next == 0x23) {
|
| - return tokenizeTag(next);
|
| - }
|
| - if (next == 0x28) {
|
| - appendBeginToken(TokenType.OPEN_PAREN);
|
| - return _reader.advance();
|
| - }
|
| - if (next == 0x29) {
|
| - appendEndToken(TokenType.CLOSE_PAREN, TokenType.OPEN_PAREN);
|
| - return _reader.advance();
|
| - }
|
| - if (next == 0x2C) {
|
| - appendToken2(TokenType.COMMA);
|
| - return _reader.advance();
|
| - }
|
| - if (next == 0x3A) {
|
| - appendToken2(TokenType.COLON);
|
| - return _reader.advance();
|
| - }
|
| - if (next == 0x3B) {
|
| - appendToken2(TokenType.SEMICOLON);
|
| - return _reader.advance();
|
| - }
|
| - if (next == 0x3F) {
|
| - appendToken2(TokenType.QUESTION);
|
| - return _reader.advance();
|
| - }
|
| - if (next == 0x5D) {
|
| - appendEndToken(TokenType.CLOSE_SQUARE_BRACKET, TokenType.OPEN_SQUARE_BRACKET);
|
| - return _reader.advance();
|
| - }
|
| - if (next == 0x60) {
|
| - appendToken2(TokenType.BACKPING);
|
| - return _reader.advance();
|
| - }
|
| - if (next == 0x7B) {
|
| - appendBeginToken(TokenType.OPEN_CURLY_BRACKET);
|
| - return _reader.advance();
|
| - }
|
| - if (next == 0x7D) {
|
| - appendEndToken(TokenType.CLOSE_CURLY_BRACKET, TokenType.OPEN_CURLY_BRACKET);
|
| - return _reader.advance();
|
| - }
|
| - if (next == 0x2F) {
|
| - return tokenizeSlashOrComment(next);
|
| - }
|
| - if (next == 0x40) {
|
| - appendToken2(TokenType.AT);
|
| - return _reader.advance();
|
| - }
|
| - if (next == 0x22 || next == 0x27) {
|
| - return tokenizeString(next, _reader.offset, false);
|
| - }
|
| - if (next == 0x2E) {
|
| - return tokenizeDotOrNumber(next);
|
| - }
|
| - if (next == 0x30) {
|
| - return tokenizeHexOrNumber(next);
|
| - }
|
| - if (0x31 <= next && next <= 0x39) {
|
| - return tokenizeNumber(next);
|
| - }
|
| - if (next == -1) {
|
| - return -1;
|
| - }
|
| - reportError(ScannerErrorCode.ILLEGAL_CHARACTER, [next]);
|
| - return _reader.advance();
|
| - }
|
| -
|
| - /**
|
| - * Return the first token in the token stream that was scanned.
|
| - *
|
| - * @return the first token in the token stream that was scanned
|
| - */
|
| - Token firstToken() => _tokens.next;
|
| -
|
| - /**
|
| - * Record the fact that we are at the beginning of a new line in the source.
|
| - */
|
| - void recordStartOfLine() {
|
| - _lineStarts.add(_reader.offset);
|
| - }
|
| - void appendBeginToken(TokenType type) {
|
| - BeginToken token;
|
| - if (_firstComment == null) {
|
| - token = new BeginToken(type, _tokenStart);
|
| - } else {
|
| - token = new BeginTokenWithComment(type, _tokenStart, _firstComment);
|
| - _firstComment = null;
|
| - _lastComment = null;
|
| - }
|
| - _tail = _tail.setNext(token);
|
| - _groupingStack.add(token);
|
| - _stackEnd++;
|
| - }
|
| - void appendCommentToken(TokenType type, String value) {
|
| - if (_firstComment == null) {
|
| - _firstComment = new StringToken(type, value, _tokenStart);
|
| - _lastComment = _firstComment;
|
| - } else {
|
| - _lastComment = _lastComment.setNext(new StringToken(type, value, _tokenStart));
|
| - }
|
| - }
|
| - void appendEndToken(TokenType type, TokenType beginType) {
|
| - Token token;
|
| - if (_firstComment == null) {
|
| - token = new Token(type, _tokenStart);
|
| - } else {
|
| - token = new TokenWithComment(type, _tokenStart, _firstComment);
|
| - _firstComment = null;
|
| - _lastComment = null;
|
| - }
|
| - _tail = _tail.setNext(token);
|
| - if (_stackEnd >= 0) {
|
| - BeginToken begin = _groupingStack[_stackEnd];
|
| - if (identical(begin.type, beginType)) {
|
| - begin.endToken = token;
|
| - _groupingStack.removeAt(_stackEnd--);
|
| - }
|
| - }
|
| - }
|
| - void appendEofToken() {
|
| - Token eofToken;
|
| - if (_firstComment == null) {
|
| - eofToken = new Token(TokenType.EOF, _reader.offset + 1);
|
| - } else {
|
| - eofToken = new TokenWithComment(TokenType.EOF, _reader.offset + 1, _firstComment);
|
| - _firstComment = null;
|
| - _lastComment = null;
|
| - }
|
| - eofToken.setNext(eofToken);
|
| - _tail = _tail.setNext(eofToken);
|
| - if (_stackEnd >= 0) {
|
| - _hasUnmatchedGroups2 = true;
|
| - }
|
| - }
|
| - void appendKeywordToken(Keyword keyword) {
|
| - if (_firstComment == null) {
|
| - _tail = _tail.setNext(new KeywordToken(keyword, _tokenStart));
|
| - } else {
|
| - _tail = _tail.setNext(new KeywordTokenWithComment(keyword, _tokenStart, _firstComment));
|
| - _firstComment = null;
|
| - _lastComment = null;
|
| - }
|
| - }
|
| - void appendStringToken(TokenType type, String value) {
|
| - if (_firstComment == null) {
|
| - _tail = _tail.setNext(new StringToken(type, value, _tokenStart));
|
| - } else {
|
| - _tail = _tail.setNext(new StringTokenWithComment(type, value, _tokenStart, _firstComment));
|
| - _firstComment = null;
|
| - _lastComment = null;
|
| - }
|
| - }
|
| - void appendStringToken2(TokenType type, String value, int offset) {
|
| - if (_firstComment == null) {
|
| - _tail = _tail.setNext(new StringToken(type, value, _tokenStart + offset));
|
| - } else {
|
| - _tail = _tail.setNext(new StringTokenWithComment(type, value, _tokenStart + offset, _firstComment));
|
| - _firstComment = null;
|
| - _lastComment = null;
|
| - }
|
| - }
|
| - void appendToken2(TokenType type) {
|
| - if (_firstComment == null) {
|
| - _tail = _tail.setNext(new Token(type, _tokenStart));
|
| - } else {
|
| - _tail = _tail.setNext(new TokenWithComment(type, _tokenStart, _firstComment));
|
| - _firstComment = null;
|
| - _lastComment = null;
|
| - }
|
| - }
|
| - void appendToken3(TokenType type, int offset) {
|
| - if (_firstComment == null) {
|
| - _tail = _tail.setNext(new Token(type, offset));
|
| - } else {
|
| - _tail = _tail.setNext(new TokenWithComment(type, offset, _firstComment));
|
| - _firstComment = null;
|
| - _lastComment = null;
|
| - }
|
| - }
|
| - void beginToken() {
|
| - _tokenStart = _reader.offset;
|
| - }
|
| -
|
| - /**
|
| - * 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() {
|
| - while (_stackEnd >= 0) {
|
| - BeginToken begin = _groupingStack[_stackEnd];
|
| - if (identical(begin.type, TokenType.OPEN_CURLY_BRACKET) || identical(begin.type, TokenType.STRING_INTERPOLATION_EXPRESSION)) {
|
| - return begin;
|
| - }
|
| - _hasUnmatchedGroups2 = true;
|
| - _groupingStack.removeAt(_stackEnd--);
|
| - }
|
| - return null;
|
| - }
|
| -
|
| - /**
|
| - * 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, _reader.offset, 1, errorCode, arguments));
|
| - }
|
| - int select(int choice, TokenType yesType, TokenType noType) {
|
| - int next = _reader.advance();
|
| - if (next == choice) {
|
| - appendToken2(yesType);
|
| - return _reader.advance();
|
| - } else {
|
| - appendToken2(noType);
|
| - return next;
|
| - }
|
| - }
|
| - int select2(int choice, TokenType yesType, TokenType noType, int offset) {
|
| - int next = _reader.advance();
|
| - if (next == choice) {
|
| - appendToken3(yesType, offset);
|
| - return _reader.advance();
|
| - } else {
|
| - appendToken3(noType, offset);
|
| - return next;
|
| - }
|
| - }
|
| - int tokenizeAmpersand(int next) {
|
| - next = _reader.advance();
|
| - if (next == 0x26) {
|
| - appendToken2(TokenType.AMPERSAND_AMPERSAND);
|
| - return _reader.advance();
|
| - } else if (next == 0x3D) {
|
| - appendToken2(TokenType.AMPERSAND_EQ);
|
| - return _reader.advance();
|
| - } else {
|
| - appendToken2(TokenType.AMPERSAND);
|
| - return next;
|
| - }
|
| - }
|
| - int tokenizeBar(int next) {
|
| - next = _reader.advance();
|
| - if (next == 0x7C) {
|
| - appendToken2(TokenType.BAR_BAR);
|
| - return _reader.advance();
|
| - } else if (next == 0x3D) {
|
| - appendToken2(TokenType.BAR_EQ);
|
| - return _reader.advance();
|
| - } else {
|
| - appendToken2(TokenType.BAR);
|
| - return next;
|
| - }
|
| - }
|
| - int tokenizeCaret(int next) => select(0x3D, TokenType.CARET_EQ, TokenType.CARET);
|
| - int tokenizeDotOrNumber(int next) {
|
| - int start = _reader.offset;
|
| - next = _reader.advance();
|
| - if (0x30 <= next && next <= 0x39) {
|
| - return tokenizeFractionPart(next, start);
|
| - } else if (0x2E == next) {
|
| - return select(0x2E, TokenType.PERIOD_PERIOD_PERIOD, TokenType.PERIOD_PERIOD);
|
| - } else {
|
| - appendToken2(TokenType.PERIOD);
|
| - return next;
|
| - }
|
| - }
|
| - int tokenizeEquals(int next) {
|
| - next = _reader.advance();
|
| - if (next == 0x3D) {
|
| - appendToken2(TokenType.EQ_EQ);
|
| - return _reader.advance();
|
| - } else if (next == 0x3E) {
|
| - appendToken2(TokenType.FUNCTION);
|
| - return _reader.advance();
|
| - }
|
| - appendToken2(TokenType.EQ);
|
| - return next;
|
| - }
|
| - int tokenizeExclamation(int next) {
|
| - next = _reader.advance();
|
| - if (next == 0x3D) {
|
| - appendToken2(TokenType.BANG_EQ);
|
| - return _reader.advance();
|
| - }
|
| - appendToken2(TokenType.BANG);
|
| - return next;
|
| - }
|
| - int tokenizeExponent(int next) {
|
| - if (next == 0x2B || next == 0x2D) {
|
| - next = _reader.advance();
|
| - }
|
| - bool hasDigits = false;
|
| - while (true) {
|
| - if (0x30 <= next && next <= 0x39) {
|
| - hasDigits = true;
|
| - } else {
|
| - if (!hasDigits) {
|
| - reportError(ScannerErrorCode.MISSING_DIGIT, []);
|
| - }
|
| - return next;
|
| - }
|
| - next = _reader.advance();
|
| - }
|
| - }
|
| - int tokenizeFractionPart(int next, int start) {
|
| - bool done = false;
|
| - bool hasDigit = false;
|
| - LOOP: while (!done) {
|
| - if (0x30 <= next && next <= 0x39) {
|
| - hasDigit = true;
|
| - } else if (0x65 == next || 0x45 == next) {
|
| - hasDigit = true;
|
| - next = tokenizeExponent(_reader.advance());
|
| - done = true;
|
| - continue LOOP;
|
| - } else {
|
| - done = true;
|
| - continue LOOP;
|
| - }
|
| - next = _reader.advance();
|
| - }
|
| - if (!hasDigit) {
|
| - appendStringToken(TokenType.INT, _reader.getString(start, -2));
|
| - if (0x2E == next) {
|
| - return select2(0x2E, TokenType.PERIOD_PERIOD_PERIOD, TokenType.PERIOD_PERIOD, _reader.offset - 1);
|
| - }
|
| - appendToken3(TokenType.PERIOD, _reader.offset - 1);
|
| - return bigSwitch(next);
|
| - }
|
| - appendStringToken(TokenType.DOUBLE, _reader.getString(start, next < 0 ? 0 : -1));
|
| - return next;
|
| - }
|
| - int tokenizeGreaterThan(int next) {
|
| - next = _reader.advance();
|
| - if (0x3D == next) {
|
| - appendToken2(TokenType.GT_EQ);
|
| - return _reader.advance();
|
| - } else if (0x3E == next) {
|
| - next = _reader.advance();
|
| - if (0x3D == next) {
|
| - appendToken2(TokenType.GT_GT_EQ);
|
| - return _reader.advance();
|
| - } else {
|
| - appendToken2(TokenType.GT_GT);
|
| - return next;
|
| - }
|
| - } else {
|
| - appendToken2(TokenType.GT);
|
| - return next;
|
| - }
|
| - }
|
| - int tokenizeHex(int next) {
|
| - int start = _reader.offset - 1;
|
| - bool hasDigits = false;
|
| - while (true) {
|
| - next = _reader.advance();
|
| - if ((0x30 <= next && next <= 0x39) || (0x41 <= next && next <= 0x46) || (0x61 <= next && next <= 0x66)) {
|
| - hasDigits = true;
|
| - } else {
|
| - if (!hasDigits) {
|
| - reportError(ScannerErrorCode.MISSING_HEX_DIGIT, []);
|
| - }
|
| - appendStringToken(TokenType.HEXADECIMAL, _reader.getString(start, next < 0 ? 0 : -1));
|
| - return next;
|
| - }
|
| - }
|
| - }
|
| - int tokenizeHexOrNumber(int next) {
|
| - int x = _reader.peek();
|
| - if (x == 0x78 || x == 0x58) {
|
| - _reader.advance();
|
| - return tokenizeHex(x);
|
| - }
|
| - return tokenizeNumber(next);
|
| - }
|
| - int tokenizeIdentifier(int next, int start, bool allowDollar) {
|
| - while ((0x61 <= next && next <= 0x7A) || (0x41 <= next && next <= 0x5A) || (0x30 <= next && next <= 0x39) || next == 0x5F || (next == 0x24 && allowDollar)) {
|
| - next = _reader.advance();
|
| - }
|
| - appendStringToken(TokenType.IDENTIFIER, _reader.getString(start, next < 0 ? 0 : -1));
|
| - return next;
|
| - }
|
| - int tokenizeInterpolatedExpression(int next, int start) {
|
| - appendBeginToken(TokenType.STRING_INTERPOLATION_EXPRESSION);
|
| - next = _reader.advance();
|
| - while (next != -1) {
|
| - if (next == 0x7D) {
|
| - BeginToken begin = findTokenMatchingClosingBraceInInterpolationExpression();
|
| - if (begin == null) {
|
| - beginToken();
|
| - appendToken2(TokenType.CLOSE_CURLY_BRACKET);
|
| - next = _reader.advance();
|
| - beginToken();
|
| - return next;
|
| - } else if (identical(begin.type, TokenType.OPEN_CURLY_BRACKET)) {
|
| - beginToken();
|
| - appendEndToken(TokenType.CLOSE_CURLY_BRACKET, TokenType.OPEN_CURLY_BRACKET);
|
| - next = _reader.advance();
|
| - beginToken();
|
| - } else if (identical(begin.type, TokenType.STRING_INTERPOLATION_EXPRESSION)) {
|
| - beginToken();
|
| - appendEndToken(TokenType.CLOSE_CURLY_BRACKET, TokenType.STRING_INTERPOLATION_EXPRESSION);
|
| - next = _reader.advance();
|
| - beginToken();
|
| - return next;
|
| - }
|
| - } else {
|
| - next = bigSwitch(next);
|
| - }
|
| - }
|
| - if (next == -1) {
|
| - return next;
|
| - }
|
| - next = _reader.advance();
|
| - beginToken();
|
| - return next;
|
| - }
|
| - int tokenizeInterpolatedIdentifier(int next, int start) {
|
| - appendStringToken2(TokenType.STRING_INTERPOLATION_IDENTIFIER, "\$", 0);
|
| - if ((0x41 <= next && next <= 0x5A) || (0x61 <= next && next <= 0x7A) || next == 0x5F) {
|
| - beginToken();
|
| - next = tokenizeKeywordOrIdentifier(next, false);
|
| - }
|
| - beginToken();
|
| - return next;
|
| - }
|
| - int tokenizeKeywordOrIdentifier(int next, bool allowDollar) {
|
| - KeywordState state = KeywordState.KEYWORD_STATE;
|
| - int start = _reader.offset;
|
| - while (state != null && 0x61 <= next && next <= 0x7A) {
|
| - state = state.next(next as int);
|
| - next = _reader.advance();
|
| - }
|
| - if (state == null || state.keyword() == null) {
|
| - return tokenizeIdentifier(next, start, allowDollar);
|
| - }
|
| - if ((0x41 <= next && next <= 0x5A) || (0x30 <= next && next <= 0x39) || next == 0x5F || next == 0x24) {
|
| - return tokenizeIdentifier(next, start, allowDollar);
|
| - } else if (next < 128) {
|
| - appendKeywordToken(state.keyword());
|
| - return next;
|
| - } else {
|
| - return tokenizeIdentifier(next, start, allowDollar);
|
| - }
|
| - }
|
| - int tokenizeLessThan(int next) {
|
| - next = _reader.advance();
|
| - if (0x3D == next) {
|
| - appendToken2(TokenType.LT_EQ);
|
| - return _reader.advance();
|
| - } else if (0x3C == next) {
|
| - return select(0x3D, TokenType.LT_LT_EQ, TokenType.LT_LT);
|
| - } else {
|
| - appendToken2(TokenType.LT);
|
| - return next;
|
| - }
|
| - }
|
| - int tokenizeMinus(int next) {
|
| - next = _reader.advance();
|
| - if (next == 0x2D) {
|
| - appendToken2(TokenType.MINUS_MINUS);
|
| - return _reader.advance();
|
| - } else if (next == 0x3D) {
|
| - appendToken2(TokenType.MINUS_EQ);
|
| - return _reader.advance();
|
| - } else {
|
| - appendToken2(TokenType.MINUS);
|
| - return next;
|
| - }
|
| - }
|
| - int tokenizeMultiLineComment(int next) {
|
| - int nesting = 1;
|
| - next = _reader.advance();
|
| - while (true) {
|
| - if (-1 == next) {
|
| - reportError(ScannerErrorCode.UNTERMINATED_MULTI_LINE_COMMENT, []);
|
| - appendCommentToken(TokenType.MULTI_LINE_COMMENT, _reader.getString(_tokenStart, 0));
|
| - return next;
|
| - } else if (0x2A == next) {
|
| - next = _reader.advance();
|
| - if (0x2F == next) {
|
| - --nesting;
|
| - if (0 == nesting) {
|
| - appendCommentToken(TokenType.MULTI_LINE_COMMENT, _reader.getString(_tokenStart, 0));
|
| - return _reader.advance();
|
| - } else {
|
| - next = _reader.advance();
|
| - }
|
| - }
|
| - } else if (0x2F == next) {
|
| - next = _reader.advance();
|
| - if (0x2A == next) {
|
| - next = _reader.advance();
|
| - ++nesting;
|
| - }
|
| - } else if (next == 0xD) {
|
| - next = _reader.advance();
|
| - if (next == 0xA) {
|
| - next = _reader.advance();
|
| - }
|
| - recordStartOfLine();
|
| - } else if (next == 0xA) {
|
| - recordStartOfLine();
|
| - next = _reader.advance();
|
| - } else {
|
| - next = _reader.advance();
|
| - }
|
| - }
|
| - }
|
| - int tokenizeMultiLineRawString(int quoteChar, int start) {
|
| - int next = _reader.advance();
|
| - outer: while (next != -1) {
|
| - while (next != quoteChar) {
|
| - next = _reader.advance();
|
| - if (next == -1) {
|
| - break outer;
|
| - } else if (next == 0xD) {
|
| - next = _reader.advance();
|
| - if (next == 0xA) {
|
| - next = _reader.advance();
|
| - }
|
| - recordStartOfLine();
|
| - } else if (next == 0xA) {
|
| - recordStartOfLine();
|
| - next = _reader.advance();
|
| - }
|
| - }
|
| - next = _reader.advance();
|
| - if (next == quoteChar) {
|
| - next = _reader.advance();
|
| - if (next == quoteChar) {
|
| - appendStringToken(TokenType.STRING, _reader.getString(start, 0));
|
| - return _reader.advance();
|
| - }
|
| - }
|
| - }
|
| - reportError(ScannerErrorCode.UNTERMINATED_STRING_LITERAL, []);
|
| - appendStringToken(TokenType.STRING, _reader.getString(start, 0));
|
| - return _reader.advance();
|
| - }
|
| - int tokenizeMultiLineString(int quoteChar, int start, bool raw) {
|
| - if (raw) {
|
| - return tokenizeMultiLineRawString(quoteChar, start);
|
| - }
|
| - int next = _reader.advance();
|
| - while (next != -1) {
|
| - if (next == 0x24) {
|
| - appendStringToken(TokenType.STRING, _reader.getString(start, -1));
|
| - beginToken();
|
| - next = tokenizeStringInterpolation(start);
|
| - start = _reader.offset;
|
| - continue;
|
| - }
|
| - if (next == quoteChar) {
|
| - next = _reader.advance();
|
| - if (next == quoteChar) {
|
| - next = _reader.advance();
|
| - if (next == quoteChar) {
|
| - appendStringToken(TokenType.STRING, _reader.getString(start, 0));
|
| - return _reader.advance();
|
| - }
|
| - }
|
| - continue;
|
| - }
|
| - if (next == 0x5C) {
|
| - next = _reader.advance();
|
| - if (next == -1) {
|
| - break;
|
| - }
|
| - bool missingCharacter = false;
|
| - if (next == 0xD) {
|
| - missingCharacter = true;
|
| - next = _reader.advance();
|
| - if (next == 0xA) {
|
| - next = _reader.advance();
|
| - }
|
| - recordStartOfLine();
|
| - } else if (next == 0xA) {
|
| - missingCharacter = true;
|
| - recordStartOfLine();
|
| - next = _reader.advance();
|
| - } else {
|
| - next = _reader.advance();
|
| - }
|
| - if (missingCharacter) {
|
| - _errorListener.onError(new AnalysisError.con2(source, _reader.offset - 1, 1, ScannerErrorCode.CHARACTER_EXPECTED_AFTER_SLASH, []));
|
| - }
|
| - } else if (next == 0xD) {
|
| - next = _reader.advance();
|
| - if (next == 0xA) {
|
| - next = _reader.advance();
|
| - }
|
| - recordStartOfLine();
|
| - } else if (next == 0xA) {
|
| - recordStartOfLine();
|
| - next = _reader.advance();
|
| - } else {
|
| - next = _reader.advance();
|
| - }
|
| - }
|
| - reportError(ScannerErrorCode.UNTERMINATED_STRING_LITERAL, []);
|
| - appendStringToken(TokenType.STRING, _reader.getString(start, 0));
|
| - return _reader.advance();
|
| - }
|
| - int tokenizeMultiply(int next) => select(0x3D, TokenType.STAR_EQ, TokenType.STAR);
|
| - int tokenizeNumber(int next) {
|
| - int start = _reader.offset;
|
| - while (true) {
|
| - next = _reader.advance();
|
| - if (0x30 <= next && next <= 0x39) {
|
| - continue;
|
| - } else if (next == 0x2E) {
|
| - return tokenizeFractionPart(_reader.advance(), start);
|
| - } else if (next == 0x65 || next == 0x45) {
|
| - return tokenizeFractionPart(next, start);
|
| - } else {
|
| - appendStringToken(TokenType.INT, _reader.getString(start, next < 0 ? 0 : -1));
|
| - return next;
|
| - }
|
| - }
|
| - }
|
| - int tokenizeOpenSquareBracket(int next) {
|
| - next = _reader.advance();
|
| - if (next == 0x5D) {
|
| - return select(0x3D, TokenType.INDEX_EQ, TokenType.INDEX);
|
| - } else {
|
| - appendBeginToken(TokenType.OPEN_SQUARE_BRACKET);
|
| - return next;
|
| - }
|
| - }
|
| - int tokenizePercent(int next) => select(0x3D, TokenType.PERCENT_EQ, TokenType.PERCENT);
|
| - int tokenizePlus(int next) {
|
| - next = _reader.advance();
|
| - if (0x2B == next) {
|
| - appendToken2(TokenType.PLUS_PLUS);
|
| - return _reader.advance();
|
| - } else if (0x3D == next) {
|
| - appendToken2(TokenType.PLUS_EQ);
|
| - return _reader.advance();
|
| - } else {
|
| - appendToken2(TokenType.PLUS);
|
| - return next;
|
| - }
|
| - }
|
| - int tokenizeSingleLineComment(int next) {
|
| - while (true) {
|
| - next = _reader.advance();
|
| - if (-1 == next) {
|
| - appendCommentToken(TokenType.SINGLE_LINE_COMMENT, _reader.getString(_tokenStart, 0));
|
| - return next;
|
| - } else if (0xA == next || 0xD == next) {
|
| - appendCommentToken(TokenType.SINGLE_LINE_COMMENT, _reader.getString(_tokenStart, -1));
|
| - return next;
|
| - }
|
| - }
|
| - }
|
| - int tokenizeSingleLineRawString(int next, int quoteChar, int start) {
|
| - next = _reader.advance();
|
| - while (next != -1) {
|
| - if (next == quoteChar) {
|
| - appendStringToken(TokenType.STRING, _reader.getString(start, 0));
|
| - return _reader.advance();
|
| - } else if (next == 0xD || next == 0xA) {
|
| - reportError(ScannerErrorCode.UNTERMINATED_STRING_LITERAL, []);
|
| - appendStringToken(TokenType.STRING, _reader.getString(start, 0));
|
| - return _reader.advance();
|
| - }
|
| - next = _reader.advance();
|
| - }
|
| - reportError(ScannerErrorCode.UNTERMINATED_STRING_LITERAL, []);
|
| - appendStringToken(TokenType.STRING, _reader.getString(start, 0));
|
| - return _reader.advance();
|
| - }
|
| - int tokenizeSingleLineString(int next, int quoteChar, int start) {
|
| - while (next != quoteChar) {
|
| - if (next == 0x5C) {
|
| - next = _reader.advance();
|
| - } else if (next == 0x24) {
|
| - appendStringToken(TokenType.STRING, _reader.getString(start, -1));
|
| - beginToken();
|
| - next = tokenizeStringInterpolation(start);
|
| - start = _reader.offset;
|
| - continue;
|
| - }
|
| - if (next <= 0xD && (next == 0xA || next == 0xD || next == -1)) {
|
| - reportError(ScannerErrorCode.UNTERMINATED_STRING_LITERAL, []);
|
| - appendStringToken(TokenType.STRING, _reader.getString(start, 0));
|
| - return _reader.advance();
|
| - }
|
| - next = _reader.advance();
|
| - }
|
| - appendStringToken(TokenType.STRING, _reader.getString(start, 0));
|
| - return _reader.advance();
|
| - }
|
| - int tokenizeSlashOrComment(int next) {
|
| - next = _reader.advance();
|
| - if (0x2A == next) {
|
| - return tokenizeMultiLineComment(next);
|
| - } else if (0x2F == next) {
|
| - return tokenizeSingleLineComment(next);
|
| - } else if (0x3D == next) {
|
| - appendToken2(TokenType.SLASH_EQ);
|
| - return _reader.advance();
|
| - } else {
|
| - appendToken2(TokenType.SLASH);
|
| - return next;
|
| - }
|
| - }
|
| - int tokenizeString(int next, int start, bool raw) {
|
| - int quoteChar = next;
|
| - next = _reader.advance();
|
| - if (quoteChar == next) {
|
| - next = _reader.advance();
|
| - if (quoteChar == next) {
|
| - return tokenizeMultiLineString(quoteChar, start, raw);
|
| - } else {
|
| - appendStringToken(TokenType.STRING, _reader.getString(start, -1));
|
| - return next;
|
| - }
|
| - }
|
| - if (raw) {
|
| - return tokenizeSingleLineRawString(next, quoteChar, start);
|
| - } else {
|
| - return tokenizeSingleLineString(next, quoteChar, start);
|
| - }
|
| - }
|
| - int tokenizeStringInterpolation(int start) {
|
| - beginToken();
|
| - int next = _reader.advance();
|
| - if (next == 0x7B) {
|
| - return tokenizeInterpolatedExpression(next, start);
|
| - } else {
|
| - return tokenizeInterpolatedIdentifier(next, start);
|
| - }
|
| - }
|
| - int tokenizeTag(int next) {
|
| - if (_reader.offset == 0) {
|
| - if (_reader.peek() == 0x21) {
|
| - do {
|
| - next = _reader.advance();
|
| - } while (next != 0xA && next != 0xD && next > 0);
|
| - appendStringToken(TokenType.SCRIPT_TAG, _reader.getString(_tokenStart, 0));
|
| - return next;
|
| - }
|
| - }
|
| - appendToken2(TokenType.HASH);
|
| - return _reader.advance();
|
| - }
|
| - int tokenizeTilde(int next) {
|
| - next = _reader.advance();
|
| - if (next == 0x2F) {
|
| - return select(0x3D, TokenType.TILDE_SLASH_EQ, TokenType.TILDE_SLASH);
|
| - } else {
|
| - appendToken2(TokenType.TILDE);
|
| - return next;
|
| - }
|
| - }
|
| -}
|
| -/**
|
| - * Instances of the class `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);
|
| - }
|
| - Token copy() => new StringToken(type, _value2, offset);
|
| - String get lexeme => _value2;
|
| - String value() => _value2;
|
| -}
|
| -/**
|
| - * Instances of the class `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 copy() => new TokenWithComment(type, offset, _precedingComment);
|
| - Token get precedingComments => _precedingComment;
|
| -}
|
| -/**
|
| - * Instances of the class `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 a newly created token that is a copy of this token but that is not a part of any token
|
| - * stream.
|
| - *
|
| - * @return a newly created token that is a copy of this token
|
| - */
|
| - Token copy() => new Token(type, 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 first comment in the list of comments that precede this token, or `null` if
|
| - * there are no comments preceding this token. Additional comments can be reached by following the
|
| - * token stream using [getNext] until `null` is returned.
|
| - *
|
| - * @return the first comment in the list of comments that precede this token
|
| - */
|
| - Token get precedingComments => null;
|
| -
|
| - /**
|
| - * Return `true` if this token represents an operator.
|
| - *
|
| - * @return `true` if this token represents an operator
|
| - */
|
| - bool get isOperator => type.isOperator;
|
| -
|
| - /**
|
| - * Return `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 (`0`).
|
| - *
|
| - * @return `true` if this token is a synthetic token
|
| - */
|
| - bool get isSynthetic => length == 0;
|
| -
|
| - /**
|
| - * Return `true` if this token represents an operator that can be defined by users.
|
| - *
|
| - * @return `true` if this token represents an operator that can be defined by users
|
| - */
|
| - bool get 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;
|
| - }
|
| - 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;
|
| -
|
| - /**
|
| - * Apply (add) the given delta to this token's offset.
|
| - *
|
| - * @param delta the amount by which the offset is to be adjusted
|
| - */
|
| - void applyDelta(int delta) {
|
| - offset += delta;
|
| - }
|
| -
|
| - /**
|
| - * Copy a linked list of comment tokens identical to the given comment tokens.
|
| - *
|
| - * @param token the first token in the list, or `null` if there are no tokens to be copied
|
| - * @return the tokens that were created
|
| - */
|
| - Token copyComments(Token token) {
|
| - if (token == null) {
|
| - return null;
|
| - }
|
| - Token head = token.copy();
|
| - Token tail = head;
|
| - token = token.next;
|
| - while (token != null) {
|
| - tail = tail.setNext(token.copy());
|
| - }
|
| - return head;
|
| - }
|
| -}
|
| -/**
|
| - * The interface `CharacterReader`
|
| - */
|
| -abstract class CharacterReader {
|
| -
|
| - /**
|
| - * 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 current offset relative to the beginning of the source. 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 entire source code has been scanned.
|
| - *
|
| - * @return the current offset of the scanner in the source
|
| - */
|
| - int get offset;
|
| -
|
| - /**
|
| - * 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 characters 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();
|
| -
|
| - /**
|
| - * Set the current offset relative to the beginning of the source. The new offset must be between
|
| - * the initial offset and one (1) past the end of the source code.
|
| - *
|
| - * @param offset the new offset in the source
|
| - */
|
| - void set offset(int offset);
|
| -}
|
| -/**
|
| - * Instances of the class `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 copy() => new BeginTokenWithComment(type, offset, copyComments(_precedingComment));
|
| - Token get precedingComments => _precedingComment;
|
| - void applyDelta(int delta) {
|
| - super.applyDelta(delta);
|
| - Token token = _precedingComment;
|
| - while (token != null) {
|
| - token.applyDelta(delta);
|
| - token = token.next;
|
| - }
|
| - }
|
| -}
|
| -/**
|
| - * Instances of the class `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;
|
| - }
|
| - Token copy() => new KeywordToken(keyword, offset);
|
| - String get lexeme => keyword.syntax;
|
| - Keyword value() => keyword;
|
| -}
|
| -/**
|
| - * Instances of the class `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)));
|
| - }
|
| - Token copy() => new BeginToken(type, offset);
|
| -}
|
| -/**
|
| - * The enumeration `TokenClass` represents classes (or groups) of tokens with a similar use.
|
| - *
|
| - * @coverage dart.engine.parser
|
| - */
|
| -class TokenClass extends Enum<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 precedence of tokens of this class, or `0` if the such tokens do not represent an
|
| - * operator.
|
| - */
|
| - int precedence = 0;
|
| - TokenClass.con1(String name, int ordinal) : this.con2(name, ordinal, 0);
|
| - TokenClass.con2(String name, int ordinal, int precedence) : super(name, ordinal) {
|
| - this.precedence = precedence;
|
| - }
|
| -}
|
| -/**
|
| - * Instances of the class `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 copy() => new KeywordTokenWithComment(keyword, offset, copyComments(_precedingComment));
|
| - Token get precedingComments => _precedingComment;
|
| - void applyDelta(int delta) {
|
| - super.applyDelta(delta);
|
| - Token token = _precedingComment;
|
| - while (token != null) {
|
| - token.applyDelta(delta);
|
| - token = token.next;
|
| - }
|
| - }
|
| -}
|
| -/**
|
| - * The enumeration `TokenType` defines the types of tokens that can be returned by the
|
| - * scanner.
|
| - *
|
| - * @coverage dart.engine.parser
|
| - */
|
| -class TokenType extends Enum<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);
|
| - static final TokenType SCRIPT_TAG = new TokenType.con1('SCRIPT_TAG', 7);
|
| - static final TokenType SINGLE_LINE_COMMENT = new TokenType.con1('SINGLE_LINE_COMMENT', 8);
|
| - static final TokenType STRING = new TokenType.con1('STRING', 9);
|
| - static final TokenType AMPERSAND = new TokenType.con2('AMPERSAND', 10, TokenClass.BITWISE_AND_OPERATOR, "&");
|
| - static final TokenType AMPERSAND_AMPERSAND = new TokenType.con2('AMPERSAND_AMPERSAND', 11, TokenClass.LOGICAL_AND_OPERATOR, "&&");
|
| - static final TokenType AMPERSAND_EQ = new TokenType.con2('AMPERSAND_EQ', 12, TokenClass.ASSIGNMENT_OPERATOR, "&=");
|
| - static final TokenType AT = new TokenType.con2('AT', 13, null, "@");
|
| - static final TokenType BANG = new TokenType.con2('BANG', 14, TokenClass.UNARY_PREFIX_OPERATOR, "!");
|
| - static final TokenType BANG_EQ = new TokenType.con2('BANG_EQ', 15, TokenClass.EQUALITY_OPERATOR, "!=");
|
| - static final TokenType BAR = new TokenType.con2('BAR', 16, TokenClass.BITWISE_OR_OPERATOR, "|");
|
| - static final TokenType BAR_BAR = new TokenType.con2('BAR_BAR', 17, TokenClass.LOGICAL_OR_OPERATOR, "||");
|
| - static final TokenType BAR_EQ = new TokenType.con2('BAR_EQ', 18, TokenClass.ASSIGNMENT_OPERATOR, "|=");
|
| - static final TokenType COLON = new TokenType.con2('COLON', 19, null, ":");
|
| - static final TokenType COMMA = new TokenType.con2('COMMA', 20, null, ",");
|
| - static final TokenType CARET = new TokenType.con2('CARET', 21, TokenClass.BITWISE_XOR_OPERATOR, "^");
|
| - static final TokenType CARET_EQ = new TokenType.con2('CARET_EQ', 22, TokenClass.ASSIGNMENT_OPERATOR, "^=");
|
| - static final TokenType CLOSE_CURLY_BRACKET = new TokenType.con2('CLOSE_CURLY_BRACKET', 23, null, "}");
|
| - static final TokenType CLOSE_PAREN = new TokenType.con2('CLOSE_PAREN', 24, null, ")");
|
| - static final TokenType CLOSE_SQUARE_BRACKET = new TokenType.con2('CLOSE_SQUARE_BRACKET', 25, null, "]");
|
| - static final TokenType EQ = new TokenType.con2('EQ', 26, TokenClass.ASSIGNMENT_OPERATOR, "=");
|
| - static final TokenType EQ_EQ = new TokenType.con2('EQ_EQ', 27, TokenClass.EQUALITY_OPERATOR, "==");
|
| - static final TokenType FUNCTION = new TokenType.con2('FUNCTION', 28, null, "=>");
|
| - static final TokenType GT = new TokenType.con2('GT', 29, TokenClass.RELATIONAL_OPERATOR, ">");
|
| - static final TokenType GT_EQ = new TokenType.con2('GT_EQ', 30, TokenClass.RELATIONAL_OPERATOR, ">=");
|
| - static final TokenType GT_GT = new TokenType.con2('GT_GT', 31, TokenClass.SHIFT_OPERATOR, ">>");
|
| - static final TokenType GT_GT_EQ = new TokenType.con2('GT_GT_EQ', 32, TokenClass.ASSIGNMENT_OPERATOR, ">>=");
|
| - static final TokenType HASH = new TokenType.con2('HASH', 33, null, "#");
|
| - static final TokenType INDEX = new TokenType.con2('INDEX', 34, TokenClass.UNARY_POSTFIX_OPERATOR, "[]");
|
| - static final TokenType INDEX_EQ = new TokenType.con2('INDEX_EQ', 35, TokenClass.UNARY_POSTFIX_OPERATOR, "[]=");
|
| - static final TokenType IS = new TokenType.con2('IS', 36, TokenClass.RELATIONAL_OPERATOR, "is");
|
| - static final TokenType LT = new TokenType.con2('LT', 37, TokenClass.RELATIONAL_OPERATOR, "<");
|
| - static final TokenType LT_EQ = new TokenType.con2('LT_EQ', 38, TokenClass.RELATIONAL_OPERATOR, "<=");
|
| - static final TokenType LT_LT = new TokenType.con2('LT_LT', 39, TokenClass.SHIFT_OPERATOR, "<<");
|
| - static final TokenType LT_LT_EQ = new TokenType.con2('LT_LT_EQ', 40, TokenClass.ASSIGNMENT_OPERATOR, "<<=");
|
| - static final TokenType MINUS = new TokenType.con2('MINUS', 41, TokenClass.ADDITIVE_OPERATOR, "-");
|
| - static final TokenType MINUS_EQ = new TokenType.con2('MINUS_EQ', 42, TokenClass.ASSIGNMENT_OPERATOR, "-=");
|
| - static final TokenType MINUS_MINUS = new TokenType.con2('MINUS_MINUS', 43, TokenClass.UNARY_PREFIX_OPERATOR, "--");
|
| - static final TokenType OPEN_CURLY_BRACKET = new TokenType.con2('OPEN_CURLY_BRACKET', 44, null, "{");
|
| - static final TokenType OPEN_PAREN = new TokenType.con2('OPEN_PAREN', 45, TokenClass.UNARY_POSTFIX_OPERATOR, "(");
|
| - static final TokenType OPEN_SQUARE_BRACKET = new TokenType.con2('OPEN_SQUARE_BRACKET', 46, TokenClass.UNARY_POSTFIX_OPERATOR, "[");
|
| - static final TokenType PERCENT = new TokenType.con2('PERCENT', 47, TokenClass.MULTIPLICATIVE_OPERATOR, "%");
|
| - static final TokenType PERCENT_EQ = new TokenType.con2('PERCENT_EQ', 48, TokenClass.ASSIGNMENT_OPERATOR, "%=");
|
| - static final TokenType PERIOD = new TokenType.con2('PERIOD', 49, TokenClass.UNARY_POSTFIX_OPERATOR, ".");
|
| - static final TokenType PERIOD_PERIOD = new TokenType.con2('PERIOD_PERIOD', 50, TokenClass.CASCADE_OPERATOR, "..");
|
| - static final TokenType PLUS = new TokenType.con2('PLUS', 51, TokenClass.ADDITIVE_OPERATOR, "+");
|
| - static final TokenType PLUS_EQ = new TokenType.con2('PLUS_EQ', 52, TokenClass.ASSIGNMENT_OPERATOR, "+=");
|
| - static final TokenType PLUS_PLUS = new TokenType.con2('PLUS_PLUS', 53, TokenClass.UNARY_PREFIX_OPERATOR, "++");
|
| - static final TokenType QUESTION = new TokenType.con2('QUESTION', 54, TokenClass.CONDITIONAL_OPERATOR, "?");
|
| - static final TokenType SEMICOLON = new TokenType.con2('SEMICOLON', 55, null, ";");
|
| - static final TokenType SLASH = new TokenType.con2('SLASH', 56, TokenClass.MULTIPLICATIVE_OPERATOR, "/");
|
| - static final TokenType SLASH_EQ = new TokenType.con2('SLASH_EQ', 57, TokenClass.ASSIGNMENT_OPERATOR, "/=");
|
| - static final TokenType STAR = new TokenType.con2('STAR', 58, TokenClass.MULTIPLICATIVE_OPERATOR, "*");
|
| - 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 class of the token.
|
| - */
|
| - TokenClass _tokenClass;
|
| -
|
| - /**
|
| - * The lexeme that defines this type of token, or `null` if there is more than one possible
|
| - * lexeme for this type of token.
|
| - */
|
| - String lexeme;
|
| - TokenType.con1(String name, int ordinal) : this.con2(name, ordinal, TokenClass.NO_CLASS, null);
|
| - TokenType.con2(String name, int ordinal, TokenClass tokenClass, String lexeme) : super(name, ordinal) {
|
| - this._tokenClass = tokenClass == null ? TokenClass.NO_CLASS : tokenClass;
|
| - this.lexeme = lexeme;
|
| - }
|
| -
|
| - /**
|
| - * Return the precedence of the token, or `0` if the token does not represent an operator.
|
| - *
|
| - * @return the precedence of the token
|
| - */
|
| - int get precedence => _tokenClass.precedence;
|
| -
|
| - /**
|
| - * Return `true` if this type of token represents an additive operator.
|
| - *
|
| - * @return `true` if this type of token represents an additive operator
|
| - */
|
| - bool get isAdditiveOperator => identical(_tokenClass, TokenClass.ADDITIVE_OPERATOR);
|
| -
|
| - /**
|
| - * Return `true` if this type of token represents an assignment operator.
|
| - *
|
| - * @return `true` if this type of token represents an assignment operator
|
| - */
|
| - bool get isAssignmentOperator => identical(_tokenClass, TokenClass.ASSIGNMENT_OPERATOR);
|
| -
|
| - /**
|
| - * Return `true` if this type of token represents an associative operator. An associative
|
| - * operator is an operator for which the following equality is true:
|
| - * `(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.
|
| - *
|
| - * 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 `true` if this type of token represents an associative operator
|
| - */
|
| - bool get 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 `true` if this type of token represents an equality operator.
|
| - *
|
| - * @return `true` if this type of token represents an equality operator
|
| - */
|
| - bool get isEqualityOperator => identical(_tokenClass, TokenClass.EQUALITY_OPERATOR);
|
| -
|
| - /**
|
| - * Return `true` if this type of token represents an increment operator.
|
| - *
|
| - * @return `true` if this type of token represents an increment operator
|
| - */
|
| - bool get isIncrementOperator => identical(lexeme, "++") || identical(lexeme, "--");
|
| -
|
| - /**
|
| - * Return `true` if this type of token represents a multiplicative operator.
|
| - *
|
| - * @return `true` if this type of token represents a multiplicative operator
|
| - */
|
| - bool get isMultiplicativeOperator => identical(_tokenClass, TokenClass.MULTIPLICATIVE_OPERATOR);
|
| -
|
| - /**
|
| - * Return `true` if this token type represents an operator.
|
| - *
|
| - * @return `true` if this token type represents an operator
|
| - */
|
| - bool get isOperator => _tokenClass != TokenClass.NO_CLASS && this != OPEN_PAREN && this != OPEN_SQUARE_BRACKET && this != PERIOD;
|
| -
|
| - /**
|
| - * Return `true` if this type of token represents a relational operator.
|
| - *
|
| - * @return `true` if this type of token represents a relational operator
|
| - */
|
| - bool get isRelationalOperator => identical(_tokenClass, TokenClass.RELATIONAL_OPERATOR);
|
| -
|
| - /**
|
| - * Return `true` if this type of token represents a shift operator.
|
| - *
|
| - * @return `true` if this type of token represents a shift operator
|
| - */
|
| - bool get isShiftOperator => identical(_tokenClass, TokenClass.SHIFT_OPERATOR);
|
| -
|
| - /**
|
| - * Return `true` if this type of token represents a unary postfix operator.
|
| - *
|
| - * @return `true` if this type of token represents a unary postfix operator
|
| - */
|
| - bool get isUnaryPostfixOperator => identical(_tokenClass, TokenClass.UNARY_POSTFIX_OPERATOR);
|
| -
|
| - /**
|
| - * Return `true` if this type of token represents a unary prefix operator.
|
| - *
|
| - * @return `true` if this type of token represents a unary prefix operator
|
| - */
|
| - bool get isUnaryPrefixOperator => identical(_tokenClass, TokenClass.UNARY_PREFIX_OPERATOR);
|
| -
|
| - /**
|
| - * Return `true` if this token type represents an operator that can be defined by users.
|
| - *
|
| - * @return `true` if this token type represents an operator that can be defined by users
|
| - */
|
| - bool get 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, "|");
|
| -}
|
| -class TokenType_EOF extends TokenType {
|
| - TokenType_EOF(String name, int ordinal, TokenClass arg0, String arg1) : super.con2(name, ordinal, arg0, arg1);
|
| - String toString() => "-eof-";
|
| -}
|
|
|
Chromium Code Reviews
Issue 45573002:
Rename analyzer_experimental to analyzer. (Closed)
Base URL: https://dart.googlecode.com/svn/branches/bleeding_edge/dart