mirror of
https://github.com/Z3Prover/z3
synced 2025-04-14 12:58:44 +00:00
de916f50d6
- some handling for commutative operators - fix bug in demodulator_index where fwd and bwd are swapped
65 lines
2.1 KiB
C++
65 lines
2.1 KiB
C++
/*++
|
|
Copyright (c) 2022 Microsoft Corporation
|
|
|
|
Module Name:
|
|
|
|
demodulator_simplifier.h
|
|
|
|
Author:
|
|
|
|
Nikolaj Bjorner (nbjorner) 2022-12-4
|
|
|
|
--*/
|
|
|
|
#pragma once
|
|
|
|
#include "ast/substitution/demodulator_rewriter.h"
|
|
#include "ast/simplifiers/dependent_expr_state.h"
|
|
#include "util/uint_set.h"
|
|
|
|
class demodulator_index {
|
|
ast_manager& m;
|
|
obj_map<func_decl, uint_set*> m_fwd_index, m_bwd_index;
|
|
void add(func_decl* f, unsigned i, obj_map<func_decl, uint_set*>& map);
|
|
void del(func_decl* f, unsigned i, obj_map<func_decl, uint_set*>& map);
|
|
public:
|
|
demodulator_index(ast_manager& m): m(m) {}
|
|
~demodulator_index();
|
|
void reset();
|
|
void insert_fwd(func_decl* f, unsigned i) { add(f, i, m_fwd_index); }
|
|
void remove_fwd(func_decl* f, unsigned i) { del(f, i, m_fwd_index); }
|
|
void insert_bwd(expr* e, unsigned i);
|
|
void remove_bwd(expr* e, unsigned i);
|
|
bool find_fwd(func_decl* f, uint_set*& s) { return m_fwd_index.find(f, s); }
|
|
bool find_bwd(func_decl* f, uint_set*& s) { return m_bwd_index.find(f, s); }
|
|
bool empty() const { return m_fwd_index.empty(); }
|
|
std::ostream& display(std::ostream& out) const;
|
|
};
|
|
|
|
class demodulator_simplifier : public dependent_expr_simplifier {
|
|
typedef std::pair<app*, expr*> app_expr_pair;
|
|
demodulator_index m_index;
|
|
demodulator_util m_util;
|
|
demodulator_match_subst m_match_subst;
|
|
demodulator_rewriter_util m_rewriter;
|
|
u_map<app_expr_pair> m_rewrites;
|
|
uint_set m_processed, m_dependencies;
|
|
unsigned_vector m_todo;
|
|
expr_ref_vector m_pinned;
|
|
|
|
void rewrite(unsigned i);
|
|
bool rewrite1(func_decl* f, expr_ref_vector const& args, expr_ref& np);
|
|
expr* fml(unsigned i) { return m_fmls[i].fml(); }
|
|
expr_dependency* dep(unsigned i) { return m_fmls[i].dep(); }
|
|
void reschedule_processed(func_decl* f);
|
|
void reschedule_demodulators(func_decl* f, expr* lhs);
|
|
void reset();
|
|
|
|
public:
|
|
demodulator_simplifier(ast_manager& m, params_ref const& p, dependent_expr_state& st);
|
|
|
|
void reduce() override;
|
|
|
|
char const* name() const override { return "demodulator"; }
|
|
};
|