45 lines
2.2 KiB
C++
45 lines
2.2 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 "kernel/environment.h"
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namespace lean {
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class type_checker;
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class converter {
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protected:
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name mk_fresh_name(type_checker & tc);
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pair<expr, constraint_seq> infer_type(type_checker & tc, expr const & e);
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extension_context & get_extension(type_checker & tc);
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public:
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virtual ~converter() {}
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virtual pair<expr, constraint_seq> whnf(expr const & e, type_checker & c) = 0;
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virtual pair<bool, constraint_seq> is_def_eq(expr const & t, expr const & s, type_checker & c, delayed_justification & j) = 0;
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virtual optional<module_idx> get_module_idx() const = 0;
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virtual bool is_opaque(declaration const & d) const = 0;
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pair<bool, constraint_seq> is_def_eq(expr const & t, expr const & s, type_checker & 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, optional<module_idx> mod_idx = optional<module_idx>(),
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bool memoize = true);
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std::unique_ptr<converter> mk_default_converter(environment const & env, optional<module_idx> mod_idx,
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bool memoize, extra_opaque_pred const & pred);
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std::unique_ptr<converter> mk_default_converter(environment const & env, bool unfold_opaque_main,
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bool memoize = true);
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std::unique_ptr<converter> mk_default_converter(environment const & env, bool unfold_opaque_main,
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bool memoize, extra_opaque_pred const & pred);
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bool is_opaque(declaration const & d, extra_opaque_pred const & pred, optional<module_idx> const & mod_idx);
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optional<declaration> is_delta(environment const & env, expr const & e, extra_opaque_pred const & pred, optional<module_idx> const & mod_idx);
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optional<declaration> is_delta(environment const & env, expr const & e, extra_opaque_pred const & pred);
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optional<declaration> is_delta(environment const & env, expr const & e);
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void initialize_converter();
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void finalize_converter();
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}
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