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/******************************************************************************
* Top contributors (to current version):
* Justin Xu, Mathias Preiner, 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.
* ****************************************************************************
*
* The preprocessing pass super class
*
* Implementation of the preprocessing pass super class. Preprocessing passes
* that inherit from this class, need to pass their name to the constructor to
* register the pass appropriately. The core of a preprocessing pass lives
* in applyInternal(), which operates on a list of assertions and is called
* from apply() in the super class. The apply() method automatically takes
* care of the following:
*
* - Dumping assertions before and after the pass
* - Initializing the timer
* - Tracing and chatting
*
* Optionally, preprocessing passes can overwrite the initInteral() method to
* do work that only needs to be done once.
*/
#include "cvc5_private.h"
#ifndef CVC5__PREPROCESSING__PREPROCESSING_PASS_H
#define CVC5__PREPROCESSING__PREPROCESSING_PASS_H
#include <string>
#include "util/statistics_registry.h"
#include "util/stats_timer.h"
namespace cvc5 {
namespace preprocessing {
class AssertionPipeline;
class PreprocessingPassContext;
/**
* Preprocessing passes return a result which indicates whether a conflict has
* been detected during preprocessing.
*/
enum PreprocessingPassResult { CONFLICT, NO_CONFLICT };
class PreprocessingPass {
public:
/* Preprocesses a list of assertions assertionsToPreprocess */
PreprocessingPassResult apply(AssertionPipeline* assertionsToPreprocess);
PreprocessingPass(PreprocessingPassContext* preprocContext,
const std::string& name);
virtual ~PreprocessingPass();
protected:
/*
* Method for dumping assertions within a pass. Also called before and after
* applying the pass.
*/
void dumpAssertions(const char* key, const AssertionPipeline& assertionList);
/*
* Abstract method that each pass implements to do the actual preprocessing.
*/
virtual PreprocessingPassResult applyInternal(
AssertionPipeline* assertionsToPreprocess) = 0;
/* Context for Preprocessing Passes that initializes necessary variables */
PreprocessingPassContext* d_preprocContext;
private:
/* Name of pass */
std::string d_name;
/* Timer for registering the preprocessing time of this pass */
TimerStat d_timer;
};
} // namespace preprocessing
} // namespace cvc5
#endif /* CVC5__PREPROCESSING__PREPROCESSING_PASS_H */
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