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/******************************************************************************
* Top contributors (to current version):
* Andrew Reynolds, Kshitij Bansal, Gereon Kremer
*
* This file is part of the cvc5 project.
*
* Copyright (c) 2009-2021 by the authors listed in the file AUTHORS
* in the top-level source directory and their institutional affiliations.
* All rights reserved. See the file COPYING in the top-level source
* directory for licensing information.
* ****************************************************************************
*
* An additional layer between commands and invoking them.
*/
#ifndef CVC5__MAIN__COMMAND_EXECUTOR_H
#define CVC5__MAIN__COMMAND_EXECUTOR_H
#include <iosfwd>
#include <string>
#include "api/cpp/cvc5.h"
#include "expr/symbol_manager.h"
#include "options/options.h"
namespace cvc5 {
class Command;
namespace smt {
class SmtEngine;
}
namespace main {
class CommandExecutor
{
protected:
/**
* The solver object, which is allocated by this class and is used for
* executing most commands (e.g. check-sat).
*/
std::unique_ptr<api::Solver>& d_solver;
/**
* The symbol manager, which is allocated by this class. This manages
* all things related to definitions of symbols and their impact on behaviors
* for commands (e.g. get-unsat-core, get-model, get-assignment), as well
* as tracking expression names. Note the symbol manager is independent from
* the parser, which uses this symbol manager given a text input.
*
* Certain commands (e.g. reset-assertions) have a specific impact on the
* symbol manager.
*/
std::unique_ptr<SymbolManager> d_symman;
api::Result d_result;
public:
CommandExecutor(std::unique_ptr<api::Solver>& solver);
virtual ~CommandExecutor();
/**
* Executes a command. Recursively handles if cmd is a command
* sequence. Eventually uses doCommandSingleton (which can be
* overridden by a derived class).
*/
bool doCommand(cvc5::Command* cmd);
bool doCommand(std::unique_ptr<cvc5::Command>& cmd)
{
return doCommand(cmd.get());
}
/** Get a pointer to the solver object owned by this CommandExecutor. */
api::Solver* getSolver() { return d_solver.get(); }
/** Get a pointer to the symbol manager owned by this CommandExecutor */
SymbolManager* getSymbolManager() { return d_symman.get(); }
api::Result getResult() const { return d_result; }
void reset();
SmtEngine* getSmtEngine() const { return d_solver->getSmtEngine(); }
/** Get the current options from the solver */
Options& getOptions();
/** Store the current options as the original options */
void storeOptionsAsOriginal();
/**
* Prints statistics to an output stream.
* Checks whether statistics should be printed according to the options.
* Thus, this method can always be called without checking the options.
*/
virtual void printStatistics(std::ostream& out) const;
/**
* Safely prints statistics to a file descriptor.
* This method is safe to be used within a signal handler.
* Checks whether statistics should be printed according to the options.
* Thus, this method can always be called without checking the options.
*/
void printStatisticsSafe(int fd) const;
void flushOutputStreams();
protected:
/** Executes treating cmd as a singleton */
virtual bool doCommandSingleton(cvc5::Command* cmd);
private:
CommandExecutor();
}; /* class CommandExecutor */
bool solverInvoke(api::Solver* solver,
SymbolManager* sm,
Command* cmd,
std::ostream& out);
} // namespace main
} // namespace cvc5
#endif /* CVC5__MAIN__COMMAND_EXECUTOR_H */
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