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/********************* -*- C++ -*- */
/** parser.h
** This file is part of the CVC4 prototype.
** Copyright (c) 2009 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.
**
** Parser abstraction.
**/
#ifndef __CVC4__PARSER__PARSER_H
#define __CVC4__PARSER__PARSER_H
#include <string>
#include <iostream>
#include <fstream>
#include "cvc4_config.h"
#include "parser_exception.h"
namespace CVC4 {
// Forward declarations
class Expr;
class Command;
class ExprManager;
namespace parser {
class AntlrSmtLexer;
class AntlrSmtParser;
class AntlrCvcLexer;
class AntlrCvcParser;
/**
* The parser.
*/
class CVC4_PUBLIC Parser {
public:
/**
* Construct the parser that uses the given expression manager.
* @param em the expression manager.
*/
Parser(ExprManager* em);
/**
* Destructor.
*/
virtual ~Parser() {
}
/**
* Parse the next command of the input
*/
virtual Command* parseNextCommand() throw (ParserException) = 0;
/**
* Parse the next expression of the stream
*/
virtual Expr parseNextExpression() throw (ParserException) = 0;
/**
* Check if we are done -- either the end of input has been reached.
*/
bool done() const;
protected:
/** Sets the done flag */
void setDone(bool done = true);
/** Expression manager the parser will be using */
ExprManager* d_expr_manager;
/** Are we done */
bool d_done;
}; // end of class Parser
class CVC4_PUBLIC SmtParser : public Parser {
public:
/**
* Construct the parser that uses the given expression manager and parses
* from the given input stream.
* @param em the expression manager to use
* @param input the input stream to parse
*/
SmtParser(ExprManager* em, std::istream& input);
/**
* Construct the parser that uses the given expression manager and parses
* from the file.
* @param em the expression manager to use
* @param file_name the file to parse
*/
SmtParser(ExprManager* em, const char* file_name);
/**
* Destructor.
*/
~SmtParser();
/**
* Parses the next command. By default, the SMTLIB parser produces one
* CommandSequence command. If parsing is successful, we should be done
* after the first call to this command.
* @return the CommandSequence command that includes the whole benchmark
*/
Command* parseNextCommand() throw (ParserException);
/**
* Parses the next complete expression of the stream.
* @return the expression parsed
*/
Expr parseNextExpression() throw (ParserException);
protected:
/** The ANTLR smt lexer */
AntlrSmtLexer* d_antlr_lexer;
/** The ANTLR smt parser */
AntlrSmtParser* d_antlr_parser;
/** The file stream we might be using */
std::ifstream d_input;
};
class CVC4_PUBLIC CvcParser : public Parser {
public:
/**
* Construct the parser that uses the given expression manager and parses
* from the given input stream.
* @param em the expression manager to use
* @param input the input stream to parse
*/
CvcParser(ExprManager* em, std::istream& input);
/**
* Construct the parser that uses the given expression manager and parses
* from the file.
* @param em the expression manager to use
* @param file_name the file to parse
*/
CvcParser(ExprManager* em, const char* file_name);
/**
* Destructor.
*/
~CvcParser();
/**
* Parses the next command. By default, the SMTLIB parser produces one
* CommandSequence command. If parsing is successful, we should be done
* after the first call to this command.
* @return the CommandSequence command that includes the whole benchmark
*/
Command* parseNextCommand() throw (ParserException);
/**
* Parses the next complete expression of the stream.
* @return the expression parsed
*/
Expr parseNextExpression() throw (ParserException);
protected:
/** The ANTLR smt lexer */
AntlrCvcLexer* d_antlr_lexer;
/** The ANTLR smt parser */
AntlrCvcParser* d_antlr_parser;
/** The file stream we might be using */
std::ifstream d_input;
};
}/* CVC4::parser namespace */
}/* CVC4 namespace */
#endif /* __CVC4__PARSER__PARSER_H */
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