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/********************* -*- C++ -*- */
/** parser.cpp
** Original author: mdeters
** Major contributors: dejan
** Minor contributors (to current version): none
** 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 implementation.
**/
#include <iostream>
#include <fstream>
#include <antlr/CharScanner.hpp>
#include "parser.h"
#include "util/command.h"
#include "util/Assert.h"
#include "parser_exception.h"
#include "parser/antlr_parser.h"
#include "parser/smt/generated/AntlrSmtParser.hpp"
#include "parser/smt/generated/AntlrSmtLexer.hpp"
#include "parser/cvc/generated/AntlrCvcParser.hpp"
#include "parser/cvc/generated/AntlrCvcLexer.hpp"
using namespace std;
using namespace antlr;
namespace CVC4 {
namespace parser {
void Parser::setDone(bool done) {
d_done = done;
}
bool Parser::done() const {
return d_done;
}
Command* Parser::parseNextCommand() throw(ParserException, AssertionException) {
Command* cmd = NULL;
if(!done()) {
try {
cmd = d_antlrParser->parseCommand();
if (cmd == NULL) setDone();
} catch(antlr::ANTLRException& e) {
setDone();
throw ParserException(e.toString());
}
}
return cmd;
}
Expr Parser::parseNextExpression() throw(ParserException, AssertionException) {
Expr result;
if(!done()) {
try {
result = d_antlrParser->parseExpr();
if(result.isNull())
setDone();
} catch(antlr::ANTLRException& e) {
setDone();
throw ParserException(e.toString());
}
}
return result;
}
Parser::~Parser() {
delete d_antlrParser;
delete d_antlrLexer;
if(d_deleteInput) {
delete d_input;
}
}
Parser::Parser(istream* input, AntlrParser* antlrParser, CharScanner* antlrLexer, bool deleteInput) :
d_done(false), d_input(input), d_antlrParser(antlrParser), d_antlrLexer(antlrLexer), d_deleteInput(deleteInput) {
}
Parser* Parser::getNewParser(ExprManager* em, InputLanguage lang,
istream* input, string filename, bool deleteInput) {
AntlrParser* antlrParser = 0;
antlr::CharScanner* antlrLexer = 0;
switch(lang) {
case LANG_CVC4: {
antlrLexer = new AntlrCvcLexer(*input);
antlrLexer->setFilename(filename);
antlrParser = new AntlrCvcParser(*antlrLexer);
antlrParser->setFilename(filename);
antlrParser->setExpressionManager(em);
break;
}
case LANG_SMTLIB: {
antlrLexer = new AntlrSmtLexer(*input);
antlrLexer->setFilename(filename);
antlrParser = new AntlrSmtParser(*antlrLexer);
antlrParser->setFilename(filename);
antlrParser->setExpressionManager(em);
break;
}
default:
Unhandled("Unknown Input language!");
}
return new Parser(input, antlrParser, antlrLexer, deleteInput);
}
Parser* Parser::getNewParser(ExprManager* em, InputLanguage lang,
string filename) {
istream* input = new ifstream(filename.c_str());
return getNewParser(em, lang, input, filename, true);
}
Parser* Parser::getNewParser(ExprManager* em, InputLanguage lang,
istream& input) {
return getNewParser(em, lang, &input, "", false);
}
}/* CVC4::parser namespace */
}/* CVC4 namespace */
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