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Z3 sources
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
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Leonardo de Moura
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197
lib/dl_sieve_relation.h
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197
lib/dl_sieve_relation.h
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/*++
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Copyright (c) 2006 Microsoft Corporation
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Module Name:
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dl_sieve_relation.h
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Abstract:
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<abstract>
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Author:
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Krystof Hoder (t-khoder) 2010-11-11.
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Revision History:
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--*/
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#ifndef _DL_SIEVE_RELATION_H_
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#define _DL_SIEVE_RELATION_H_
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#include "dl_context.h"
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namespace datalog {
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class sieve_relation;
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class sieve_relation_plugin : public relation_plugin {
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friend class sieve_relation;
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public:
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struct rel_spec {
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svector<bool> m_inner_cols;
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family_id m_inner_kind;
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/**
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Create uninitialized rel_spec.
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*/
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rel_spec() {}
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/**
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\c inner_kind==null_family_id means we will not specify a relation kind when requesting
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the relation object from the relation_manager.
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\c inner_kind==null_family_id cannot hold in a specification of existing relation object.
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*/
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rel_spec(unsigned sig_sz, const bool * inner_cols, family_id inner_kind=null_family_id)
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: m_inner_cols(sig_sz, inner_cols), m_inner_kind(inner_kind) {}
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bool operator==(const rel_spec & o) const {
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return m_inner_kind==o.m_inner_kind && vectors_equal(m_inner_cols, o.m_inner_cols);
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}
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struct hash {
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unsigned operator()(const rel_spec & s) const {
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return int_vector_hash(s.m_inner_cols)^s.m_inner_kind;
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}
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};
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};
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private:
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class join_fn;
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class transformer_fn;
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class union_fn;
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class filter_fn;
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class negation_filter_fn;
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rel_spec_store<rel_spec, rel_spec::hash, default_eq<rel_spec> > m_spec_store;
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family_id get_relation_kind(sieve_relation & r, const bool * inner_columns);
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void extract_inner_columns(const relation_signature & s, relation_plugin & inner,
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svector<bool> & inner_columns);
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void extract_inner_signature(const relation_signature & s, relation_signature & inner_sig);
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void collect_inner_signature(const relation_signature & s, const svector<bool> & inner_columns,
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relation_signature & inner_sig);
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public:
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static symbol get_name() { return symbol("sieve_relation"); }
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static sieve_relation_plugin& get_plugin(relation_manager & rmgr);
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static sieve_relation& get(relation_base& r);
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static sieve_relation const & get(relation_base const& r);
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static sieve_relation* get(relation_base* r);
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static sieve_relation const* get(relation_base const* r);
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sieve_relation_plugin(relation_manager & manager);
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virtual void initialize(family_id fid);
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family_id get_relation_kind(const relation_signature & sig, const bool * inner_columns,
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family_id inner_kind);
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family_id get_relation_kind(const relation_signature & sig, const svector<bool> & inner_columns,
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family_id inner_kind) {
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SASSERT(sig.size()==inner_columns.size());
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return get_relation_kind(sig, inner_columns.c_ptr(), inner_kind);
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}
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virtual bool can_handle_signature(const relation_signature & s);
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virtual relation_base * mk_empty(const relation_signature & s);
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sieve_relation * mk_empty(const sieve_relation & original);
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virtual relation_base * mk_empty(const relation_base & original);
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virtual relation_base * mk_empty(const relation_signature & s, family_id kind);
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sieve_relation * mk_empty(const relation_signature & s, relation_plugin & inner_plugin);
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virtual relation_base * mk_full(func_decl* p, const relation_signature & s);
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sieve_relation * mk_full(func_decl* p, const relation_signature & s, relation_plugin & inner_plugin);
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sieve_relation * mk_from_inner(const relation_signature & s, const bool * inner_columns,
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relation_base * inner_rel);
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sieve_relation * mk_from_inner(const relation_signature & s, const svector<bool> inner_columns,
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relation_base * inner_rel) {
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SASSERT(inner_columns.size()==s.size());
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return mk_from_inner(s, inner_columns.c_ptr(), inner_rel);
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}
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protected:
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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_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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};
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// -----------------------------------
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//
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// sieve_relation
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//
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// -----------------------------------
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class sieve_relation : public relation_base {
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friend class sieve_relation_plugin;
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friend class sieve_relation_plugin::join_fn;
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friend class sieve_relation_plugin::transformer_fn;
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friend class sieve_relation_plugin::union_fn;
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friend class sieve_relation_plugin::filter_fn;
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svector<bool> m_inner_cols;
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unsigned_vector m_sig2inner;
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unsigned_vector m_inner2sig;
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unsigned_vector m_ignored_cols; //in ascending order, so that it can be used in project-like functions
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scoped_rel<relation_base> m_inner;
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sieve_relation(sieve_relation_plugin & p, const relation_signature & s,
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const bool * inner_columns, relation_base * inner);
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public:
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sieve_relation_plugin & get_plugin() const {
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return static_cast<sieve_relation_plugin &>(relation_base::get_plugin());
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}
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bool is_inner_col(unsigned idx) const { return m_sig2inner[idx]!=UINT_MAX; }
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unsigned get_inner_col(unsigned idx) const {
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SASSERT(is_inner_col(idx));
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return m_sig2inner[idx];
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}
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bool no_sieved_columns() const { return m_ignored_cols.size()==0; }
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bool no_inner_columns() const { return m_ignored_cols.size()==get_signature().size(); }
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relation_base & get_inner() { return *m_inner; }
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const relation_base & get_inner() const { return *m_inner; }
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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 sieve_relation * clone() const;
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virtual relation_base * complement(func_decl*p) const;
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virtual void to_formula(expr_ref& fml) const;
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virtual bool empty() const { return get_inner().empty(); }
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virtual void reset() { get_inner().reset(); }
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virtual unsigned get_size_estimate_rows() const { return get_inner().get_size_estimate_rows(); }
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virtual unsigned get_size_estimate_bytes() const { return get_inner().get_size_estimate_bytes(); }
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virtual void display(std::ostream & out) const;
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};
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};
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#endif /* _DL_SIEVE_RELATION_H_ */
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