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93 lines
2.3 KiB
C++
93 lines
2.3 KiB
C++
/*++
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Copyright (c) 2006 Microsoft Corporation
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Module Name:
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dl_mk_explanations.h
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Abstract:
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<abstract>
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Author:
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Krystof Hoder (t-khoder) 2010-11-08.
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Revision History:
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--*/
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#ifndef _DL_MK_EXPLANATIONS_H_
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#define _DL_MK_EXPLANATIONS_H_
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#include "dl_context.h"
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#include "dl_rule_transformer.h"
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namespace datalog {
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class explanation_relation;
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class explanation_relation_plugin;
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class mk_explanations : public rule_transformer::plugin {
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typedef obj_map<func_decl, func_decl *> decl_map;
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ast_manager & m_manager;
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context & m_context;
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dl_decl_util & m_decl_util;
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bool m_relation_level;
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decl_set m_original_preds;
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ast_ref_vector m_pinned;
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explanation_relation_plugin * m_er_plugin;
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sort * m_e_sort;
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scoped_rel<explanation_relation> m_e_fact_relation;
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decl_map m_e_decl_map;
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symbol get_rule_symbol(rule * r);
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app * get_e_lit(app * lit, unsigned e_var_idx);
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rule * get_e_rule(rule * r);
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/**
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If \c m_relation_level is true, ensure \c e_decl predicate will be represented by
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the right relation object. \c orig is the predicate corresponding to \c e_decl without
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the explanation column.
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*/
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void assign_rel_level_kind(func_decl * e_decl, func_decl * orig);
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void translate_rel_level_relation(relation_manager & rmgr, relation_base & orig, relation_base & e_rel);
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void transform_rules(const rule_set & orig, rule_set & tgt);
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void transform_facts(relation_manager & rmgr);
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public:
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/**
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If relation_level is true, the explanation will not be stored for each fact,
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but we will rather store history of the whole relation.
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*/
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mk_explanations(context & ctx, bool relation_level);
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/**
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\brief Return explanation predicate that corresponds to \c orig_decl.
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*/
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func_decl * get_e_decl(func_decl * orig_decl);
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static func_decl * get_union_decl(context & ctx);
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func_decl * get_union_decl() const {
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return get_union_decl(m_context);
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}
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rule_set * operator()(rule_set const & source, model_converter_ref& mc, proof_converter_ref& pc);
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static expr* get_explanation(relation_base const& r);
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};
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};
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#endif /* _DL_MK_EXPLANATIONS_H_ */
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