| // -*- c-basic-offset: 2 -*- |
| /* |
| * This file is part of the KDE libraries |
| * Copyright (C) 1999-2000 Harri Porten (porten@kde.org) |
| * |
| * This library is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Library General Public |
| * License as published by the Free Software Foundation; either |
| * version 2 of the License, or (at your option) any later version. |
| * |
| * This library is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Library General Public License for more details. |
| * |
| * You should have received a copy of the GNU Library General Public License |
| * along with this library; see the file COPYING.LIB. If not, write to |
| * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
| * Boston, MA 02110-1301, USA. |
| * |
| */ |
| |
| #ifndef _KJSLEXER_H_ |
| #define _KJSLEXER_H_ |
| |
| #include "ustring.h" |
| |
| |
| namespace KJS { |
| |
| class Identifier; |
| |
| class RegExp; |
| |
| class Lexer { |
| public: |
| Lexer(); |
| ~Lexer(); |
| static Lexer *curr(); |
| |
| void setCode(const UString &sourceURL, int startingLineNumber, const UChar *c, unsigned int len); |
| int lex(); |
| |
| int lineNo() const { return yylineno; } |
| UString sourceURL() const { return m_sourceURL; } |
| |
| bool prevTerminator() const { return terminator; } |
| |
| enum State { Start, |
| IdentifierOrKeyword, |
| Identifier, |
| InIdentifierOrKeyword, |
| InIdentifier, |
| InIdentifierUnicodeEscapeStart, |
| InIdentifierUnicodeEscape, |
| InSingleLineComment, |
| InMultiLineComment, |
| InNum, |
| InNum0, |
| InHex, |
| InOctal, |
| InDecimal, |
| InExponentIndicator, |
| InExponent, |
| Hex, |
| Octal, |
| Number, |
| String, |
| Eof, |
| InString, |
| InEscapeSequence, |
| InHexEscape, |
| InUnicodeEscape, |
| Other, |
| Bad }; |
| |
| bool scanRegExp(); |
| UString pattern, flags; |
| |
| private: |
| int yylineno; |
| UString m_sourceURL; |
| bool done; |
| char *buffer8; |
| UChar *buffer16; |
| unsigned int size8, size16; |
| unsigned int pos8, pos16; |
| bool terminator; |
| bool restrKeyword; |
| // encountered delimiter like "'" and "}" on last run |
| bool delimited; |
| bool skipLF; |
| bool skipCR; |
| bool eatNextIdentifier; |
| int stackToken; |
| int lastToken; |
| |
| State state; |
| void setDone(State); |
| unsigned int pos; |
| void shift(unsigned int p); |
| void nextLine(); |
| int lookupKeyword(const char *); |
| |
| bool isWhiteSpace() const; |
| bool isLineTerminator(); |
| static bool isOctalDigit(int); |
| |
| int matchPunctuator(int c1, int c2, int c3, int c4); |
| static unsigned short singleEscape(unsigned short); |
| static unsigned short convertOctal(int c1, int c2, int c3); |
| public: |
| static unsigned char convertHex(int); |
| static unsigned char convertHex(int c1, int c2); |
| static UChar convertUnicode(int c1, int c2, int c3, int c4); |
| static bool isIdentStart(int); |
| static bool isIdentPart(int); |
| static bool isHexDigit(int); |
| |
| #ifdef KJS_DEBUG_MEM |
| /** |
| * Clear statically allocated resources |
| */ |
| static void globalClear(); |
| #endif |
| |
| bool sawError() const { return error; } |
| void doneParsing(); |
| |
| private: |
| |
| void record8(int); |
| void record16(int); |
| void record16(UChar); |
| |
| KJS::Identifier *makeIdentifier(UChar *buffer, unsigned int pos); |
| UString *makeUString(UChar *buffer, unsigned int pos); |
| |
| const UChar *code; |
| unsigned int length; |
| int yycolumn; |
| #ifndef KJS_PURE_ECMA |
| int bol; // begin of line |
| #endif |
| bool error; |
| |
| // current and following unicode characters (int to allow for -1 for end-of-file marker) |
| int current, next1, next2, next3; |
| |
| UString **strings; |
| unsigned int numStrings; |
| unsigned int stringsCapacity; |
| |
| KJS::Identifier **identifiers; |
| unsigned int numIdentifiers; |
| unsigned int identifiersCapacity; |
| |
| // for future extensions |
| class LexerPrivate; |
| LexerPrivate *priv; |
| }; |
| |
| } // namespace |
| |
| #endif |