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add EUF plugin framework.

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plugin setting allows adding equality saturation within the E-graph propagation without involving externalizing theory solver dispatch. It makes equality saturation independent of SAT integration.
Add a special relation operator to support ad-hoc AC symbols.
This commit is contained in:
Nikolaj Bjorner 2023-11-30 13:58:24 -08:00
parent 5784c2da79
commit b52fd8d954
28 changed files with 3063 additions and 68 deletions
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11
src/ast/special_relations_decl_plugin.h
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@ -16,6 +16,8 @@ Author:
Revision History:
2023-11-27: Added ac-op for E-graph plugin
--*/
#pragma once
@ -28,6 +30,7 @@ enum special_relations_op_kind {
OP_SPECIAL_RELATION_PLO,
OP_SPECIAL_RELATION_TO,
OP_SPECIAL_RELATION_TC,
OP_SPECIAL_RELATION_AC,
LAST_SPECIAL_RELATIONS_OP
};
@ -37,6 +40,7 @@ class special_relations_decl_plugin : public decl_plugin {
symbol m_plo;
symbol m_to;
symbol m_tc;
symbol m_ac;
bool m_has_special_relation = false;
public:
special_relations_decl_plugin();
@ -86,13 +90,16 @@ class special_relations_util {
public:
special_relations_util(ast_manager& m) : m(m), m_fid(null_family_id) { }
family_id get_family_id() const { return fid(); }
bool has_special_relation() const { return static_cast<special_relations_decl_plugin*>(m.get_plugin(m.mk_family_id("specrels")))->has_special_relation(); }
bool is_special_relation(func_decl* f) const { return f->get_family_id() == fid(); }
bool is_special_relation(app* e) const { return is_special_relation(e->get_decl()); }
bool is_special_relation(expr* e) const { return is_app(e) && is_special_relation(to_app(e)->get_decl()); }
sr_property get_property(func_decl* f) const;
sr_property get_property(app* e) const { return get_property(e->get_decl()); }
func_decl* get_relation(func_decl* f) const { SASSERT(is_special_relation(f)); return to_func_decl(f->get_parameter(0).get_ast()); }
func_decl* get_relation(expr* e) const { SASSERT(is_special_relation(e)); return to_func_decl(to_app(e)->get_parameter(0).get_ast()); }
func_decl* mk_to_decl(func_decl* f) { return mk_rel_decl(f, OP_SPECIAL_RELATION_TO); }
func_decl* mk_po_decl(func_decl* f) { return mk_rel_decl(f, OP_SPECIAL_RELATION_PO); }
@ -105,12 +112,14 @@ public:
bool is_plo(expr const * e) const { return is_app_of(e, fid(), OP_SPECIAL_RELATION_PLO); }
bool is_to(expr const * e) const { return is_app_of(e, fid(), OP_SPECIAL_RELATION_TO); }
bool is_tc(expr const * e) const { return is_app_of(e, fid(), OP_SPECIAL_RELATION_TC); }
bool is_ac(expr const* e) const { return is_app_of(e, fid(), OP_SPECIAL_RELATION_AC); }
bool is_lo(func_decl const * e) const { return is_decl_of(e, fid(), OP_SPECIAL_RELATION_LO); }
bool is_po(func_decl const * e) const { return is_decl_of(e, fid(), OP_SPECIAL_RELATION_PO); }
bool is_plo(func_decl const * e) const { return is_decl_of(e, fid(), OP_SPECIAL_RELATION_PLO); }
bool is_to(func_decl const * e) const { return is_decl_of(e, fid(), OP_SPECIAL_RELATION_TO); }
bool is_tc(func_decl const * e) const { return is_decl_of(e, fid(), OP_SPECIAL_RELATION_TC); }
bool is_ac(func_decl const* e) const { return is_decl_of(e, fid(), OP_SPECIAL_RELATION_AC); }
app * mk_lo (expr * arg1, expr * arg2) { return m.mk_app( fid(), OP_SPECIAL_RELATION_LO, arg1, arg2); }
app * mk_po (expr * arg1, expr * arg2) { return m.mk_app( fid(), OP_SPECIAL_RELATION_PO, arg1, arg2); }