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https://github.com/Z3Prover/z3
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142 lines
4.6 KiB
C++
142 lines
4.6 KiB
C++
/*++
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Copyright (c) 2010 Microsoft Corporation
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Module Name:
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dl_smt_relation.h
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Abstract:
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Relation signature represented by signatures that have quantifier elimination.
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Author:
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Nikolaj Bjorner (nbjorner) 2010-10-10
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Revision History:
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--*/
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#ifndef _DL_SMT_RELATION_H_
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#define _DL_SMT_RELATION_H_
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#include "dl_base.h"
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#include "front_end_params.h"
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#include "params.h"
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namespace datalog {
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class smt_relation;
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class smt_relation_plugin : public relation_plugin {
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unsigned m_counter;
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friend class smt_relation;
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class join_fn;
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class project_fn;
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class rename_fn;
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class union_fn;
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class filter_identical_fn;
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class filter_interpreted_fn;
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class negation_filter_fn;
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public:
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smt_relation_plugin(relation_manager & m);
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virtual bool can_handle_signature(const relation_signature & s);
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static symbol get_name() { return symbol("smt_relation"); }
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virtual relation_base * mk_empty(const relation_signature & s);
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virtual relation_join_fn * mk_join_fn(const relation_base & t1, const relation_base & t2,
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unsigned col_cnt, const unsigned * cols1, const unsigned * cols2);
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virtual relation_transformer_fn * mk_project_fn(const relation_base & t, unsigned col_cnt,
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const unsigned * removed_cols);
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virtual relation_transformer_fn * mk_rename_fn(const relation_base & t, unsigned permutation_cycle_len,
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const unsigned * permutation_cycle);
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virtual relation_union_fn * mk_union_fn(const relation_base & tgt, const relation_base & src,
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const relation_base * delta);
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virtual relation_union_fn * mk_widen_fn(const relation_base & tgt, const relation_base & src,
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const relation_base * delta);
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virtual relation_mutator_fn * mk_filter_identical_fn(const relation_base & t, unsigned col_cnt,
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const unsigned * identical_cols);
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virtual relation_mutator_fn * mk_filter_equal_fn(const relation_base & t, const relation_element & value,
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unsigned col);
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virtual relation_mutator_fn * mk_filter_interpreted_fn(const relation_base & t, app * condition);
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virtual relation_intersection_filter_fn * mk_filter_by_negation_fn(const relation_base & t,
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const relation_base & negated_obj, unsigned joined_col_cnt,
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const unsigned * t_cols, const unsigned * negated_cols);
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symbol fresh_name();
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front_end_params& get_fparams();
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params_ref const& get_params();
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bool is_finite_domain(sort* s) const;
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private:
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static smt_relation& get(relation_base& r);
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static smt_relation const & get(relation_base const& r);
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};
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class smt_relation : public relation_base {
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friend class smt_relation_plugin;
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friend class smt_relation_plugin::join_fn;
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friend class smt_relation_plugin::project_fn;
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friend class smt_relation_plugin::rename_fn;
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friend class smt_relation_plugin::union_fn;
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friend class smt_relation_plugin::filter_identical_fn;
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friend class smt_relation_plugin::filter_interpreted_fn;
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friend class smt_relation_plugin::negation_filter_fn;
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expr_ref m_rel; // relation.
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expr_ref_vector m_bound_vars;
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unsigned size() const { return get_signature().size(); }
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ast_manager& get_manager() const { return get_plugin().get_ast_manager(); }
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smt_relation(smt_relation_plugin & p, const relation_signature & s, expr* r);
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virtual ~smt_relation();
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void instantiate(expr* e, expr_ref& result) const;
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void mk_abstract(expr* e, expr_ref& result) const;
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bool contains(expr* facts);
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bool is_finite_domain() const;
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bool is_well_formed() const;
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void display_finite(std::ostream & out) const;
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void simplify(expr_ref& e) const;
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public:
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virtual bool empty() const;
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virtual void add_fact(const relation_fact & f);
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virtual bool contains_fact(const relation_fact & f) const;
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virtual smt_relation * clone() const;
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virtual smt_relation * complement(func_decl*) const;
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virtual void display(std::ostream & out) const;
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virtual void to_formula(expr_ref& fml) const { fml = get_relation(); simplify(fml); }
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expr* get_relation() const;
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void set_relation(expr* r);
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void add_relation(expr* s); // add s to relation.
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void filter_relation(expr* s); // restrict relation with s
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smt_relation_plugin& get_plugin() const;
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};
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};
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#endif
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