47 lines
1.7 KiB
C++
47 lines
1.7 KiB
C++
/*
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Copyright (c) 2014 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 <functional>
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#include "util/shared_mutex.h"
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#include "kernel/environment.h"
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namespace lean {
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/** \brief Auxiliary object used when multiple threads are trying to populate the same environment. */
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class shared_environment {
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environment m_env;
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mutable mutex m_mutex;
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public:
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shared_environment();
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shared_environment(environment const & env);
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/** \brief Return a copy of the current environment. This is a constant time operation. */
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environment get_environment() const;
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environment env() const { return get_environment(); }
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/**
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\brief Add the given certified declaration to the environment.
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This is a constant time operation.
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It blocks this object for a small amount of time.
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*/
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void add(certified_declaration const & d);
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/**
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\brief Add declaration that was not type checked.
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The method throws an exception if trust_level() <= LEAN_BELIEVER_TRUST_LEVEL
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It blocks this object for a small amount of time.
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*/
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void add(declaration const & d);
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/**
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\brief Replace the axiom with name <tt>t.get_declaration().get_name()</tt> with the theorem t.get_declaration().
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This is a constant time operation.
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It blocks this object for a small amount of time.
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*/
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void replace(certified_declaration const & t);
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/**
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\brief Update the environment using the given function.
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This procedure blocks access to this object.
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*/
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void update(std::function<environment(environment const &)> const & f);
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};
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}
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