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// Copyright (c) 2008 Roberto Raggi <roberto.raggi@gmail.com>
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
#ifndef CPLUSPLUS_LEXER_H
#define CPLUSPLUS_LEXER_H
#include "CPlusPlusForwardDeclarations.h"
#include "Token.h"
namespace CPlusPlus {
class CPLUSPLUS_EXPORT Lexer
{
Lexer(const Lexer &other);
void operator =(const Lexer &other);
public:
enum State {
State_Default,
State_MultiLineComment,
State_MultiLineDoxyComment
};
Lexer(TranslationUnit *unit);
Lexer(const char *firstChar, const char *lastChar);
~Lexer();
Control *control() const { return _control; }
TranslationUnit *translationUnit() const;
void scan(Token *tok);
inline void operator()(Token *tok)
{ scan(tok); }
unsigned tokenOffset() const;
unsigned tokenLength() const;
const char *tokenBegin() const;
const char *tokenEnd() const;
unsigned currentLine() const;
bool scanCommentTokens() const;
void setScanCommentTokens(bool onoff);
bool scanKeywords() const;
void setScanKeywords(bool onoff);
bool scanAngleStringLiteralTokens() const;
void setScanAngleStringLiteralTokens(bool onoff);
void setStartWithNewline(bool enabled);
int state() const;
void setState(int state);
LanguageFeatures languageFeatures() const { return _languageFeatures; }
void setLanguageFeatures(LanguageFeatures features) { _languageFeatures = features; }
private:
void scan_helper(Token *tok);
void setSource(const char *firstChar, const char *lastChar);
static int classify(const char *string, int length, LanguageFeatures features);
static int classifyObjCAtKeyword(const char *s, int n);
static int classifyOperator(const char *string, int length);
void scanStringLiteral(Token *tok, unsigned char hint = 0);
void scanRawStringLiteral(Token *tok, unsigned char hint = 0);
void scanCharLiteral(Token *tok, unsigned char hint = 0);
void scanUntilQuote(Token *tok, unsigned char quote);
void scanNumericLiteral(Token *tok);
void scanIdentifier(Token *tok, unsigned extraProcessedChars = 0);
inline void yyinp()
{
_yychar = *++_currentChar;
if (CPLUSPLUS_UNLIKELY(_yychar == '\n'))
pushLineStartOffset();
}
void pushLineStartOffset();
private:
struct Flags {
unsigned _scanCommentTokens: 1;
unsigned _scanKeywords: 1;
unsigned _scanAngleStringLiteralTokens: 1;
};
TranslationUnit *_translationUnit;
Control *_control;
const char *_firstChar;
const char *_currentChar;
const char *_lastChar;
const char *_tokenStart;
unsigned char _yychar;
int _state;
union {
unsigned _flags;
Flags f;
};
unsigned _currentLine;
LanguageFeatures _languageFeatures;
};
} // namespace CPlusPlus
#endif // CPLUSPLUS_LEXER_H
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