56 lines
1.4 KiB
C
56 lines
1.4 KiB
C
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/*
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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 <memory>
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#include "level.h"
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namespace lean {
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class environment;
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/**
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\brief Object for managing the environment, parser, pretty printer,
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elaborator, etc.
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*/
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class frontend {
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struct imp;
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std::shared_ptr<imp> m_imp;
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explicit frontend(imp * new_ptr);
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explicit frontend(std::shared_ptr<imp> const & ptr);
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public:
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frontend();
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~frontend();
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// =======================================
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// Parent/Child frontend management
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/**
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\brief Create a child environment. This frontend object will
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only allow "read-only" operations until all children frontend
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objects are deleted.
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*/
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frontend mk_child() const;
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/** \brief Return true iff this fronted has children frontend. */
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bool has_children() const;
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/** \brief Return true iff this frontend has a parent frontend. */
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bool has_parent() const;
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/** \brief Return parent frontend */
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frontend parent() const;
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// =======================================
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/** \brief Coercion frontend -> environment. */
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environment const & env() const;
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operator environment const &() const { return env(); }
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level add_uvar(name const & n, level const & l);
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level add_uvar(name const & n);
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level get_uvar(name const & n) const;
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};
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}
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