cabb4350d9
Motivation: see "Other goodies" section at https://github.com/leanprover/lean/wiki/Refactoring-structures We had to add a new transparency mode: Instances at type_context. In this mode, instances and reducible definitions are considered transparent. The new mode is used in the defeq_canonizer, code generator, and sizeof lemma generation at inductive_compiler. We also use the new mode in the unfold tactics.
56 lines
1.6 KiB
C++
56 lines
1.6 KiB
C++
/*
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Copyright (c) 2016 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 <memory>
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#include "library/type_context.h"
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namespace lean {
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/** \brief Helper class for making sure we have a cache that is compatible
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with a given environment and transparency mode. */
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template<typename Cache>
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class cache_compatibility_helper {
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std::unique_ptr<Cache> m_cache_ptr[LEAN_NUM_TRANSPARENCY_MODES];
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public:
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Cache & get_cache_for(environment const & env, transparency_mode m) {
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unsigned midx = static_cast<unsigned>(m);
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if (!m_cache_ptr[midx] || !is_eqp(env, m_cache_ptr[midx]->env())) {
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m_cache_ptr[midx].reset(new Cache(env));
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}
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return *m_cache_ptr[midx].get();
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}
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Cache & get_cache_for(type_context const & ctx) {
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return get_cache_for(ctx.env(), ctx.mode());
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}
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void clear() {
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for (unsigned i = 0; i < 4; i++) m_cache_ptr[i].reset();
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}
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};
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/** \brief Helper class for making sure we have a cache that is compatible
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with a given environment. */
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template<typename Cache>
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class transparencyless_cache_compatibility_helper {
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std::unique_ptr<Cache> m_cache_ptr;
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public:
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Cache & get_cache_for(environment const & env) {
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if (!m_cache_ptr || !is_eqp(env, m_cache_ptr->env())) {
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m_cache_ptr.reset(new Cache(env));
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}
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return *m_cache_ptr.get();
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}
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Cache & get_cache_for(type_context const & ctx) {
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return get_cache_for(ctx.env());
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}
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void clear() {
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m_cache_ptr.reset();
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}
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};
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}
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