51 lines
1.9 KiB
C++
51 lines
1.9 KiB
C++
/*
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Copyright (c) 2013 Microsoft Corporation. All rights reserved.
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Released under Apache 2.0 license as described in the file LICENSE.
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Author: Leonardo de Moura
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*/
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#pragma once
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#include <unordered_set>
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#include <utility>
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#include "util/hash.h"
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#include "kernel/expr.h"
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namespace lean {
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// =======================================
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// Expression Set && Expression Offset Set
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// Remark: to expressions are assumed to be equal if they are "pointer-equal"
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typedef std::unordered_set<expr, expr_hash, expr_eqp> expr_set;
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typedef std::unordered_set<expr_offset, expr_offset_hash, expr_offset_eqp> expr_offset_set;
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// =======================================
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// =======================================
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// (low level) Expression Cell Set
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// Remark: to expressions are assumed to be equal if they are "pointer-equal"
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//
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// WARNING: use with care, this kind of set
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// does not prevent an expression from being
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// garbage collected.
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typedef std::unordered_set<expr_cell*, expr_cell_hash, expr_cell_eqp> expr_cell_set;
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typedef std::unordered_set<expr_cell_offset, expr_cell_offset_hash, expr_cell_offset_eqp> expr_cell_offset_set;
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// =======================================
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// =======================================
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// (low level) Expression Cell pair Set
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// Remark: to expressions are assumed to be equal if they are "pointer-equal"
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//
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// WARNING: use with care, this kind of set
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// does not prevent an expression from being
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// garbage collected.
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typedef std::pair<expr_cell *, expr_cell *> expr_cell_pair;
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struct expr_cell_pair_hash {
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unsigned operator()(expr_cell_pair const & p) const { return hash(p.first->hash(), p.second->hash()); }
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};
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struct expr_cell_pair_eqp {
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bool operator()(expr_cell_pair const & p1, expr_cell_pair const & p2) const {
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return p1.first == p2.first && p1.second == p2.second;
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}
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};
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typedef std::unordered_set<expr_cell_pair, expr_cell_pair_hash, expr_cell_pair_eqp> expr_cell_pair_set;
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// =======================================
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}
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