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/********************* */
/** antlr_parser.h
** Original author: dejan
** Major contributors: cconway
** Minor contributors (to current version): mdeters
** This file is part of the CVC4 prototype.
** Copyright (c) 2009, 2010 The Analysis of Computer Systems Group (ACSys)
** Courant Institute of Mathematical Sciences
** New York University
** See the file COPYING in the top-level source directory for licensing
** information.
**
** Base for ANTLR parser classes.
**/
#include "cvc4parser_private.h"
#ifndef __CVC4__PARSER__ANTLR_PARSER_H
#define __CVC4__PARSER__ANTLR_PARSER_H
#include <vector>
#include <string>
#include <iostream>
#include <antlr3.h>
#include "expr/expr.h"
#include "expr/expr_manager.h"
#include "parser/input.h"
#include "parser/symbol_table.h"
#include "util/Assert.h"
namespace CVC4 {
class Command;
class Type;
class FunctionType;
namespace parser {
/**
* Wrapper for an ANTLR parser that includes convenience methods to set up input and token streams.
*/
class AntlrInput : public Input {
unsigned int d_lookahead;
pANTLR3_LEXER d_lexer;
pANTLR3_PARSER d_parser;
pANTLR3_COMMON_TOKEN_STREAM d_tokenStream;
pANTLR3_INPUT_STREAM d_input;
static void reportError(pANTLR3_BASE_RECOGNIZER recognizer);
public:
AntlrInput(ExprManager* exprManager, const std::string& filename, unsigned int lookahead, bool useMmap);
// AntlrParser(ExprManager* em, std::istream& input, const std::string& name, unsigned int lookahead);
AntlrInput(ExprManager* exprManager, const std::string& input, const std::string& name, unsigned int lookahead);
~AntlrInput();
inline static std::string tokenText(pANTLR3_COMMON_TOKEN token);
protected:
/**
* Throws a semantic exception with the given message.
*/
void parseError(const std::string& msg) throw (ParserException);
/** Get the lexer */
pANTLR3_LEXER getLexer();
/** Retrieve the input stream for this parser. */
pANTLR3_INPUT_STREAM getInputStream();
/** Retrieve the token stream for this parser. Must not be called before <code>setLexer()</code>. */
pANTLR3_COMMON_TOKEN_STREAM getTokenStream();
/** Set the ANTLR lexer for this parser. */
void setLexer(pANTLR3_LEXER pLexer);
/** Set the ANTLR parser implementation for this parser. */
void setParser(pANTLR3_PARSER pParser);
};
std::string AntlrInput::tokenText(pANTLR3_COMMON_TOKEN token) {
ANTLR3_MARKER start = token->getStartIndex(token);
ANTLR3_MARKER end = token->getStopIndex(token);
std::string txt( (const char *)start, end-start+1 );
Debug("parser-extra") << "tokenText: start=" << start << std::endl
<< "end=" << end << std::endl
<< "txt='" << txt << "'" << std::endl;
return txt;
}
}/* CVC4::parser namespace */
}/* CVC4 namespace */
#endif /* __CVC4__PARSER__ANTLR_PARSER_H */
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