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//
// Copyright (c) 2012 The ANGLE Project Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
//
#ifndef COMPILER_PREPROCESSOR_DIRECTIVE_PARSER_H_
#define COMPILER_PREPROCESSOR_DIRECTIVE_PARSER_H_
#include "Lexer.h"
#include "Macro.h"
#include "pp_utils.h"
#include "SourceLocation.h"
namespace pp
{
class Diagnostics;
class DirectiveHandler;
class Tokenizer;
class DirectiveParser : public Lexer
{
public:
DirectiveParser(Tokenizer* tokenizer,
MacroSet* macroSet,
Diagnostics* diagnostics,
DirectiveHandler* directiveHandler);
virtual void lex(Token* token);
private:
PP_DISALLOW_COPY_AND_ASSIGN(DirectiveParser);
void parseDirective(Token* token);
void parseDefine(Token* token);
void parseUndef(Token* token);
void parseIf(Token* token);
void parseIfdef(Token* token);
void parseIfndef(Token* token);
void parseElse(Token* token);
void parseElif(Token* token);
void parseEndif(Token* token);
void parseError(Token* token);
void parsePragma(Token* token);
void parseExtension(Token* token);
void parseVersion(Token* token);
void parseLine(Token* token);
bool skipping() const;
void parseConditionalIf(Token* token);
int parseExpressionIf(Token* token);
int parseExpressionIfdef(Token* token);
struct ConditionalBlock
{
std::string type;
SourceLocation location;
bool skipBlock;
bool skipGroup;
bool foundValidGroup;
bool foundElseGroup;
ConditionalBlock() :
skipBlock(false),
skipGroup(false),
foundValidGroup(false),
foundElseGroup(false)
{
}
};
bool mPastFirstStatement;
std::vector<ConditionalBlock> mConditionalStack;
Tokenizer* mTokenizer;
MacroSet* mMacroSet;
Diagnostics* mDiagnostics;
DirectiveHandler* mDirectiveHandler;
};
} // namespace pp
#endif // COMPILER_PREPROCESSOR_DIRECTIVE_PARSER_H_
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