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/********************* */
/*! \file preprocessing_pass.h
** \verbatim
** Top contributors (to current version):
** Justin Xu
** This file is part of the CVC4 project.
** Copyright (c) 2009-2019 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.\endverbatim
**
** \brief 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 "cvc4_private.h"
#ifndef CVC4__PREPROCESSING__PREPROCESSING_PASS_H
#define CVC4__PREPROCESSING__PREPROCESSING_PASS_H
#include <string>
#include "preprocessing/assertion_pipeline.h"
#include "preprocessing/preprocessing_pass_context.h"
#include "smt/smt_engine_scope.h"
#include "theory/logic_info.h"
namespace CVC4 {
namespace preprocessing {
/**
* 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 CVC4
#endif /* CVC4__PREPROCESSING__PREPROCESSING_PASS_H */
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