37 lines
1.3 KiB
C
37 lines
1.3 KiB
C
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/*
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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 "kernel/environment.h"
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namespace lean {
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/** \brief Auxiliary exception used to sign that constraints cannot be created when \c m_cnstrs_enabled flag is false. */
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struct add_cnstr_exception {};
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class converter {
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public:
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/** \brief Abstract context that must be provided to a converter object. */
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class context {
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public:
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virtual name mk_fresh_name() = 0;
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virtual expr infer_type(expr const & e) = 0;
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virtual void add_cnstr(constraint const & c) = 0;
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};
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virtual ~converter() {}
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virtual expr whnf(expr const & e, context & c) = 0;
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virtual bool is_def_eq(expr const & t, expr const & s, context & c, delayed_justification & j) = 0;
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bool is_def_eq(expr const & t, expr const & s, context & c);
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};
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std::unique_ptr<converter> mk_dummy_converter();
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std::unique_ptr<converter> mk_default_converter(environment const & env,
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optional<module_idx> mod_idx = optional<module_idx>(),
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bool memoize = true,
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name_set const & extra_opaque = name_set());
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}
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