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https://github.com/Z3Prover/z3
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b52fd8d954
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.
54 lines
988 B
C++
54 lines
988 B
C++
/*++
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Copyright (c) 2023 Microsoft Corporation
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Module Name:
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euf_arith_plugin.h
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Abstract:
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plugin structure for arithetic
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Author:
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Nikolaj Bjorner (nbjorner) 2023-11-11
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--*/
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#pragma once
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#include "ast/arith_decl_plugin.h"
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#include "ast/euf/euf_plugin.h"
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#include "ast/euf/euf_ac_plugin.h"
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namespace euf {
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class egraph;
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class arith_plugin : public plugin {
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enum undo_t { undo_add, undo_mul };
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arith_util a;
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svector<undo_t> m_undo;
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ac_plugin m_add, m_mul;
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public:
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arith_plugin(egraph& g);
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~arith_plugin() override {}
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unsigned get_id() const override { return a.get_family_id(); }
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void register_node(enode* n) override;
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void merge_eh(enode* n1, enode* n2) override;
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void diseq_eh(enode* eq) override {}
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void undo() override;
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void propagate() override;
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std::ostream& display(std::ostream& out) const override;
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};
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}
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