43 lines
1.5 KiB
C++
43 lines
1.5 KiB
C++
/*
|
|
Copyright (c) 2014 Microsoft Corporation. All rights reserved.
|
|
Released under Apache 2.0 license as described in the file LICENSE.
|
|
|
|
Author: Leonardo de Moura
|
|
*/
|
|
#pragma once
|
|
#include <functional>
|
|
#include "kernel/environment.h"
|
|
|
|
namespace lean {
|
|
class type_checker;
|
|
|
|
class converter {
|
|
protected:
|
|
pair<expr, constraint_seq> infer_type(type_checker & tc, expr const & e);
|
|
extension_context & get_extension(type_checker & tc);
|
|
public:
|
|
virtual ~converter() {}
|
|
virtual bool is_opaque(declaration const & d) const = 0;
|
|
virtual optional<declaration> is_delta(expr const & e) const = 0;
|
|
|
|
virtual optional<expr> is_stuck(expr const & e, type_checker & c) = 0;
|
|
virtual pair<expr, constraint_seq> whnf(expr const & e, type_checker & c) = 0;
|
|
virtual pair<bool, constraint_seq> is_def_eq(expr const & t, expr const & s, type_checker & c, delayed_justification & j) = 0;
|
|
|
|
pair<bool, constraint_seq> is_def_eq(expr const & t, expr const & s, type_checker & c);
|
|
};
|
|
|
|
/** \brief Converter that allows us to specify constants that should be considered opaque */
|
|
template<typename Converter>
|
|
class hint_converter : public Converter {
|
|
name_predicate m_pred;
|
|
public:
|
|
hint_converter(environment const & env, name_predicate const & p):Converter(env), m_pred(p) {}
|
|
virtual bool is_opaque(declaration const & d) const { return m_pred(d.get_name()) || Converter::is_opaque(d); }
|
|
};
|
|
|
|
std::unique_ptr<converter> mk_dummy_converter();
|
|
|
|
void initialize_converter();
|
|
void finalize_converter();
|
|
}
|