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/********************* -*- C++ -*- */
/** command.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.
**
**/
#ifndef __CVC4__COMMAND_H
#define __CVC4__COMMAND_H
#include <iostream>
#include "cvc4_config.h"
#include "expr/expr.h"
#include "util/result.h"
namespace CVC4 {
class SmtEngine;
class Command;
class Expr;
}/* CVC4 namespace */
namespace std {
inline std::ostream& operator<<(std::ostream&, const CVC4::Command*) CVC4_PUBLIC;
inline std::ostream& operator<<(std::ostream&, CVC4::Expr) CVC4_PUBLIC;
}
namespace CVC4 {
class CVC4_PUBLIC Command {
public:
virtual Result invoke(CVC4::SmtEngine* smt_engine) = 0;
virtual ~Command() {};
virtual void toString(std::ostream&) const = 0;
};/* class Command */
class CVC4_PUBLIC EmptyCommand : public Command {
public:
EmptyCommand();
Result invoke(CVC4::SmtEngine* smt_engine);
void toString(std::ostream& out) const { out << "EmptyCommand"; }
};/* class EmptyCommand */
class CVC4_PUBLIC AssertCommand : public Command {
protected:
Expr d_expr;
public:
AssertCommand(const Expr& e);
Result invoke(CVC4::SmtEngine* smt_engine);
void toString(std::ostream& out) const { out << "Assert(" << d_expr << ")"; }
};/* class AssertCommand */
class CVC4_PUBLIC CheckSatCommand : public Command {
public:
CheckSatCommand();
CheckSatCommand(const Expr& e);
Result invoke(SmtEngine* smt);
void toString(std::ostream& out) const { out << "CheckSat(" << d_expr << ")"; }
protected:
Expr d_expr;
};/* class CheckSatCommand */
class CVC4_PUBLIC QueryCommand : public Command {
public:
QueryCommand(const Expr& e);
Result invoke(SmtEngine* smt);
void toString(std::ostream& out) const { out << "Query(" << d_expr << ")"; }
protected:
Expr d_expr;
};/* class QueryCommand */
class CVC4_PUBLIC CommandSequence : public Command {
public:
CommandSequence();
CommandSequence(Command* cmd);
~CommandSequence();
Result invoke(SmtEngine* smt);
void addCommand(Command* cmd);
void toString(std::ostream& out) const {
out << "CommandSequence(";
for(std::vector<Command*>::const_iterator i = d_command_sequence.begin();
i != d_command_sequence.end();
++i) {
out << *i;
if(i != d_command_sequence.end())
out << " ; ";
}
out << ")";
}
private:
/** All the commands to be executed (in sequence) */
std::vector<Command*> d_command_sequence;
/** Next command to be executed */
unsigned int d_last_index;
};/* class CommandSequence */
}/* CVC4 namespace */
inline std::ostream& std::operator<<(std::ostream& out, const CVC4::Command* c) {
if(c)
c->toString(out);
else out << "(null)";
return out;
}
#endif /* __CVC4__COMMAND_H */
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