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/********************* */
/*! \file command_executor.cpp
** \verbatim
** Original author: Morgan Deters
** Major contributors: Kshitij Bansal
** Minor contributors (to current version): Andrew Reynolds
** This file is part of the CVC4 project.
** Copyright (c) 2009-2013 New York University and The University of Iowa
** See the file COPYING in the top-level source directory for licensing
** information.\endverbatim
**
** \brief An additional layer between commands and invoking them.
**/
#include <iostream>
#include "main/command_executor.h"
#include "expr/command.h"
#include "main/main.h"
#include "smt/options.h"
namespace CVC4 {
namespace main {
void printStatsIncremental(std::ostream& out, const std::string& prvsStatsString, const std::string& curStatsString);
CommandExecutor::CommandExecutor(ExprManager &exprMgr, Options &options) :
d_exprMgr(exprMgr),
d_smtEngine(SmtEngine(&exprMgr)),
d_options(options),
d_stats("driver"),
d_result() {
}
bool CommandExecutor::doCommand(Command* cmd)
{
if( d_options[options::parseOnly] ) {
return true;
}
CommandSequence *seq = dynamic_cast<CommandSequence*>(cmd);
if(seq != NULL) {
// assume no error
bool status = true;
for(CommandSequence::iterator subcmd = seq->begin();
status && subcmd != seq->end();
++subcmd) {
status = doCommand(*subcmd);
}
return status;
} else {
if(d_options[options::verbosity] > 2) {
*d_options[options::out] << "Invoking: " << *cmd << std::endl;
}
return doCommandSingleton(cmd);
}
}
bool CommandExecutor::doCommandSingleton(Command* cmd)
{
bool status = true;
if(d_options[options::verbosity] >= -1) {
status = smtEngineInvoke(&d_smtEngine, cmd, d_options[options::out]);
} else {
status = smtEngineInvoke(&d_smtEngine, cmd, NULL);
}
Result res;
CheckSatCommand* cs = dynamic_cast<CheckSatCommand*>(cmd);
if(cs != NULL) {
d_result = res = cs->getResult();
}
QueryCommand* q = dynamic_cast<QueryCommand*>(cmd);
if(q != NULL) {
d_result = res = q->getResult();
}
if((cs != NULL || q != NULL) && d_options[options::statsEveryQuery]) {
std::ostringstream ossCurStats;
flushStatistics(ossCurStats);
printStatsIncremental(*d_options[options::err], d_lastStatistics, ossCurStats.str());
d_lastStatistics = ossCurStats.str();
}
// dump the model/proof if option is set
if(status) {
if( d_options[options::produceModels] &&
d_options[options::dumpModels] &&
( res.asSatisfiabilityResult() == Result::SAT ||
(res.isUnknown() && res.whyUnknown() == Result::INCOMPLETE) ) ) {
Command* gm = new GetModelCommand();
status = doCommandSingleton(gm);
} else if( d_options[options::proof] &&
d_options[options::dumpProofs] &&
res.asSatisfiabilityResult() == Result::UNSAT ) {
Command* gp = new GetProofCommand();
status = doCommandSingleton(gp);
}
}
return status;
}
bool smtEngineInvoke(SmtEngine* smt, Command* cmd, std::ostream *out)
{
if(out == NULL) {
cmd->invoke(smt);
} else {
cmd->invoke(smt, *out);
}
return !cmd->fail();
}
void printStatsIncremental(std::ostream& out, const std::string& prvsStatsString, const std::string& curStatsString) {
if(prvsStatsString == "") {
out << curStatsString;
return;
}
// read each line
// if a number, subtract and add that to parantheses
std::istringstream issPrvs(prvsStatsString);
std::istringstream issCur(curStatsString);
std::string prvsStatName, prvsStatValue, curStatName, curStatValue;
std::getline(issPrvs, prvsStatName, ',');
std::getline(issCur, curStatName, ',');
/**
* Stat are assumed to one-per line: "<statName>, <statValue>"
* e.g. "sat::decisions, 100"
* Output is of the form: "<statName>, <statValue> (<statDiffFromPrvs>)"
* e.g. "sat::decisions, 100 (20)"
* If the value is not numeric, no change is made.
*/
while( !issCur.eof() ) {
std::getline(issCur, curStatValue, '\n');
if(curStatName == prvsStatName) {
std::getline(issPrvs, prvsStatValue, '\n');
double prvsFloat, curFloat;
bool isFloat =
(std::istringstream(prvsStatValue) >> prvsFloat) &&
(std::istringstream(curStatValue) >> curFloat);
if(isFloat) {
out << curStatName << ", " << curStatValue << " "
<< "(" << std::setprecision(8) << (curFloat-prvsFloat) << ")"
<< std::endl;
} else {
out << curStatName << ", " << curStatValue << std::endl;
}
std::getline(issPrvs, prvsStatName, ',');
} else {
out << curStatName << ", " << curStatValue << std::endl;
}
std::getline(issCur, curStatName, ',');
}
}
}/* CVC4::main namespace */
}/* CVC4 namespace */
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