43 lines
1.3 KiB
C++
43 lines
1.3 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 "metavar_env.h"
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namespace lean {
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/**
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\brief Expression elaborator, it is responsible for "filling" holes
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in terms left by the user. This is the main module resposible for computing
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the value of implicit arguments.
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*/
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class elaborator {
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environment const & m_env;
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metavar_env m_metaenv;
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expr lookup(context const & c, unsigned i);
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void unify(expr const & e1, expr const & e2, context const & ctx);
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expr check_pi(expr const & e, context const & ctx);
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level check_universe(expr const & e, context const & ctx);
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expr process(expr const & e, context const & ctx);
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public:
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elaborator(environment const & env);
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metavar_env & menv() { return m_metaenv; }
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expr operator()(expr const & e);
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void clear() { m_metaenv.clear(); }
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void set_interrupt(bool flag) { m_metaenv.set_interrupt(flag); }
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void interrupt() { set_interrupt(true); }
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void reset_interrupt() { set_interrupt(false); }
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};
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/** \brief Return true iff \c e is a special constant used to mark application of overloads. */
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bool is_overload_marker(expr const & e);
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/** \brief Return the overload marker */
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expr mk_overload_marker();
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}
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