z3-z3-4.13.0.src.smt.theory_seq_empty.h Maven / Gradle / Ivy
The newest version!
/*++
Copyright (c) 2011 Microsoft Corporation
Module Name:
theory_seq_empty.h
Abstract:
Author:
Nikolaj Bjorner (nbjorner) 2011-14-11
Revision History:
--*/
#pragma once
#include "ast/seq_decl_plugin.h"
#include "model/seq_factory.h"
#include "smt/smt_theory.h"
#include "smt/smt_model_generator.h"
namespace smt {
class theory_seq_empty : public theory {
bool m_used;
final_check_status final_check_eh() override { return m_used?FC_GIVEUP:FC_DONE; }
bool internalize_atom(app*, bool) override { if (!m_used) { get_context().push_trail(value_trail(m_used)); m_used = true; } return false; }
bool internalize_term(app*) override { return internalize_atom(nullptr,false); }
void new_eq_eh(theory_var, theory_var) override { }
void new_diseq_eh(theory_var, theory_var) override {}
theory* mk_fresh(context* new_ctx) override { return alloc(theory_seq_empty, *new_ctx); }
char const * get_name() const override { return "seq-empty"; }
void display(std::ostream& out) const override {}
public:
theory_seq_empty(context& ctx):theory(ctx, ctx.get_manager().mk_family_id("seq")), m_used(false) {}
void init_model(model_generator & mg) override {
mg.register_factory(alloc(seq_factory, get_manager(), get_family_id(), mg.get_model()));
}
};
};