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add initial skeleton for xor-solver

This commit is contained in:
Nikolaj Bjorner 2022-08-12 11:54:10 -04:00
parent b6d71fccd8
commit f989521a8c
2 changed files with 127 additions and 0 deletions

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/*++
Copyright (c) 2014 Microsoft Corporation
Module Name:
xor_solver.h
Abstract:
XOR solver.
Interface outline.
--*/
#include "sat/smt/xor_solver.h"
#include "sat/sat_simplifier_params.hpp"
#include "sat/sat_xor_finder.h"
namespace xr {
solver::solver(euf::solver& ctx):
th_solver(ctx.get_manager(), symbol("xor-solver"), ctx.get_manager().get_family_id("xor-solver"))
{}
euf::th_solver* solver::clone(euf::solver& ctx) {
// and relevant copy internal state
return alloc(solver, ctx);
}
void solver::asserted(sat::literal l) {
}
bool solver::unit_propagate() {
return false;
}
void solver::get_antecedents(sat::literal l, sat::ext_justification_idx idx,
sat::literal_vector & r, bool probing) {
}
sat::check_result solver::check() {
return sat::check_result::CR_DONE;
}
void solver::push() {
}
void solver::pop(unsigned n) {
}
// inprocessing
// pre_simplify: decompile all xor constraints to allow other in-processing.
// simplify: recompile clauses to xor constraints
// literals that get added to xor constraints are tagged with the theory.
void solver::pre_simplify() {
}
void solver::simplify() {
}
std::ostream& solver::display(std::ostream& out) const {
return out;
}
std::ostream& solver::display_justification(std::ostream& out, sat::ext_justification_idx idx) const {
return out;
}
std::ostream& solver::display_constraint(std::ostream& out, sat::ext_constraint_idx idx) const {
return out;
}
}

48
src/sat/smt/xor_solver.h Normal file
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/*++
Copyright (c) 2014 Microsoft Corporation
Module Name:
xor_solver.h
Abstract:
XOR solver.
Interface outline.
--*/
#pragma once
#include "sat/smt/euf_solver.h"
namespace xr {
class solver : public euf::th_solver {
public:
solver(euf::solver& ctx);
th_solver* clone(euf::solver& ctx) override;
sat::literal internalize(expr* e, bool sign, bool root, bool redundant) override { UNREACHABLE(); return sat::null_literal; }
void internalize(expr* e, bool redundant) override { UNREACHABLE(); }
void asserted(sat::literal l) override;
bool unit_propagate() override;
void get_antecedents(sat::literal l, sat::ext_justification_idx idx, sat::literal_vector & r, bool probing) override;
void pre_simplify() override;
void simplify() override;
sat::check_result check() override;
void push() override;
void pop(unsigned n) override;
std::ostream& display(std::ostream& out) const override;
std::ostream& display_justification(std::ostream& out, sat::ext_justification_idx idx) const override;
std::ostream& display_constraint(std::ostream& out, sat::ext_constraint_idx idx) const override;
};
}