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/********************* */
/** main.cpp
** Original author: mdeters
** Major contributors: barrett, dejan
** Minor contributors (to current version): cconway
** 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.
**
** Main driver for CVC4 executable.
**/
#include <iostream>
#include <fstream>
#include <cstdlib>
#include <cstring>
#include <new>
#include "config.h"
#include "main.h"
#include "usage.h"
#include "parser/parser.h"
#include "expr/expr_manager.h"
#include "smt/smt_engine.h"
#include "expr/command.h"
#include "util/result.h"
#include "util/Assert.h"
#include "util/output.h"
#include "util/options.h"
using namespace std;
using namespace CVC4;
using namespace CVC4::parser;
using namespace CVC4::main;
static Result lastResult;
static struct Options options;
int runCvc4(int argc, char* argv[]);
void doCommand(SmtEngine&, Command*);
/**
* CVC4's main() routine is just an exception-safe wrapper around CVC4.
* Please don't construct anything here. Even if the constructor is
* inside the try { }, an exception during destruction can cause
* problems. That's why main() wraps runCvc4() in the first place.
* Put everything in runCvc4().
*/
int main(int argc, char* argv[]) {
try {
return runCvc4(argc, argv);
} catch(OptionException& e) {
if(options.smtcomp_mode) {
cout << "unknown" << endl;
}
cerr << "CVC4 Error:" << endl << e << endl;
printf(usage, options.binary_name.c_str());
abort();
} catch(Exception& e) {
if(options.smtcomp_mode) {
cout << "unknown" << endl;
}
cerr << "CVC4 Error:" << endl << e << endl;
abort();
} catch(bad_alloc) {
if(options.smtcomp_mode) {
cout << "unknown" << endl;
}
cerr << "CVC4 ran out of memory." << endl;
abort();
} catch(...) {
if(options.smtcomp_mode) {
cout << "unknown" << endl;
}
cerr << "CVC4 threw an exception of unknown type." << endl;
abort();
}
}
int runCvc4(int argc, char* argv[]) {
// Initialize the signal handlers
cvc4_init();
// Parse the options
int firstArgIndex = parseOptions(argc, argv, &options);
// If in competition mode, set output stream option to flush immediately
if(options.smtcomp_mode) {
cout << unitbuf;
}
// We only accept one input file
if(argc > firstArgIndex + 1) {
throw Exception("Too many input files specified.");
}
// Create the expression manager
ExprManager exprMgr;
// Create the SmtEngine
SmtEngine smt(&exprMgr, &options);
// If no file supplied we read from standard input
bool inputFromStdin = firstArgIndex >= argc || !strcmp("-", argv[firstArgIndex]);
// Auto-detect input language by filename extension
if(!inputFromStdin && options.lang == Parser::LANG_AUTO) {
const char* filename = argv[firstArgIndex];
unsigned len = strlen(filename);
if(len >= 4 && !strcmp(".smt", filename + len - 4)) {
options.lang = Parser::LANG_SMTLIB;
} else if(( len >= 4 && !strcmp(".cvc", filename + len - 4) )
|| ( len >= 5 && !strcmp(".cvc4", filename + len - 5) )) {
options.lang = Parser::LANG_CVC4;
}
}
// Determine which messages to show based on smtcomp_mode and verbosity
if(options.smtcomp_mode) {
Debug.setStream(CVC4::null_os);
Trace.setStream(CVC4::null_os);
Notice.setStream(CVC4::null_os);
Chat.setStream(CVC4::null_os);
Message.setStream(CVC4::null_os);
Warning.setStream(CVC4::null_os);
} else {
if(options.verbosity < 2) {
Chat.setStream(CVC4::null_os);
}
if(options.verbosity < 1) {
Notice.setStream(CVC4::null_os);
}
if(options.verbosity < 0) {
Message.setStream(CVC4::null_os);
Warning.setStream(CVC4::null_os);
}
}
// Create the parser
Parser* parser;
istream* input = NULL;
if(inputFromStdin) {
parser = Parser::getNewParser(&exprMgr, options.lang, cin, "<stdin>");
} else if( options.memoryMap ) {
parser = Parser::getMemoryMappedParser(&exprMgr, options.lang, argv[firstArgIndex]);
} else {
string filename = argv[firstArgIndex];
input = new ifstream(filename.c_str());
if(!*input) {
throw Exception("file does not exist or is unreadable: " + filename);
}
parser = Parser::getNewParser(&exprMgr, options.lang, *input, filename);
}
if(!options.semanticChecks) {
parser->disableChecks();
}
// Parse and execute commands until we are done
Command* cmd;
while((cmd = parser->parseNextCommand())) {
if( !options.parseOnly ) {
doCommand(smt, cmd);
}
delete cmd;
}
// Remove the parser
delete parser;
delete input;
switch(lastResult.asSatisfiabilityResult().isSAT()) {
case Result::SAT:
return 10;
case Result::UNSAT:
return 20;
default:
return 0;
}
}
void doCommand(SmtEngine& smt, Command* cmd) {
CommandSequence *seq = dynamic_cast<CommandSequence*>(cmd);
if(seq != NULL) {
for(CommandSequence::iterator subcmd = seq->begin();
subcmd != seq->end();
++subcmd) {
doCommand(smt, *subcmd);
}
} else {
if(options.verbosity > 0) {
cout << "Invoking: " << *cmd << endl;
}
cmd->invoke(&smt);
QueryCommand *qc = dynamic_cast<QueryCommand*>(cmd);
if(qc != NULL) {
lastResult = qc->getResult();
if(options.verbosity >= 0) {
cout << lastResult << endl;
}
} else {
CheckSatCommand *csc = dynamic_cast<CheckSatCommand*>(cmd);
if(csc != NULL) {
lastResult = csc->getResult();
if(options.verbosity >= 0) {
cout << lastResult << endl;
}
}
}
}
}
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