Synthesize candidate-rewrites from standard inputs (#1918)

1 files changed, 48 insertions, 0 deletions

diff --git a/src/preprocessing/passes/synth_rew_rules.h b/src/preprocessing/passes/synth_rew_rules.h
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+++ b/src/preprocessing/passes/synth_rew_rules.h
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+/*********************                                                        */
+/*! \file synth_rew_rules.h
+ ** \verbatim
+ ** Top contributors (to current version):
+ **  Andrew Reynolds
+ ** This file is part of the CVC4 project.
+ ** Copyright (c) 2009-2018 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 A technique for synthesizing candidate rewrites of the form t1 = t2,
+ ** where t1 and t2 are subterms of the input.
+ **/
+
+#ifndef __CVC4__PREPROCESSING__PASSES__SYNTH_REW_RULES_H
+#define __CVC4__PREPROCESSING__PASSES__SYNTH_REW_RULES_H
+
+#include "preprocessing/preprocessing_pass.h"
+#include "preprocessing/preprocessing_pass_context.h"
+
+namespace CVC4 {
+namespace preprocessing {
+namespace passes {
+
+/**
+ * This class computes candidate rewrite rules of the form t1 = t2, where
+ * t1 and t2 are subterms of assertionsToPreprocess. It prints
+ * "candidate-rewrite" messages on the output stream of options.
+ *
+ * In contrast to other preprocessing passes, this pass does not modify
+ * the set of assertions.
+ */
+class SynthRewRulesPass : public PreprocessingPass
+{
+ public:
+  SynthRewRulesPass(PreprocessingPassContext* preprocContext);
+
+ protected:
+  PreprocessingPassResult applyInternal(
+      AssertionPipeline* assertionsToPreprocess) override;
+};
+
+}  // namespace passes
+}  // namespace preprocessing
+}  // namespace CVC4
+
+#endif /* __CVC4__PREPROCESSING__PASSES__SYNTH_REW_RULES_H */