33 lines
819 B
C++
33 lines
819 B
C++
/*
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Copyright (c) 2015 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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#include "kernel/expr_cache.h"
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namespace lean {
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expr * expr_cache::find(expr const & e) {
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unsigned i = e.hash() % m_capacity;
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if (m_cache[i].m_expr && is_bi_equal(*m_cache[i].m_expr, e))
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return &m_cache[i].m_result;
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else
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return nullptr;
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}
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void expr_cache::insert(expr const & e, expr const & v) {
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unsigned i = e.hash() % m_capacity;
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if (!m_cache[i].m_expr)
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m_used.push_back(i);
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m_cache[i].m_expr = e;
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m_cache[i].m_result = v;
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}
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void expr_cache::clear() {
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for (unsigned i : m_used) {
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m_cache[i].m_expr = none_expr();
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m_cache[i].m_result = expr();
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}
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m_used.clear();
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}
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}
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