90 lines
3.9 KiB
C++
90 lines
3.9 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 <algorithm>
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#include <string>
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#include "util/rc.h"
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#include "kernel/expr.h"
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namespace lean {
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/**
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\brief Module index. The kernel provides only basic support
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for implementing a module system outside of the kernel.
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We need at least the notion of module index in the kernel, because
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it affects the convertability procedure.
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Given an opaque definition (non-theorem) d in module m1, then d is considered
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to be transparent for any other opaque definition in module m1.
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*/
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typedef unsigned module_idx;
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/**
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\brief Environment definitions, theorems, axioms and variable declarations.
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*/
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class declaration {
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struct cell;
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cell * m_ptr;
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explicit declaration(cell * ptr);
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friend struct cell;
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public:
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/**
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\brief The default constructor creates a reference to a "dummy"
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declaration. The actual "dummy" declaration is not relevant, and
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no procedure should rely on the kind of declaration used.
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We have a default constructor because some collections only work
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with types that have a default constructor.
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*/
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declaration();
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declaration(declaration const & s);
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declaration(declaration && s);
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~declaration();
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friend void swap(declaration & a, declaration & b) { std::swap(a.m_ptr, b.m_ptr); }
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declaration & operator=(declaration const & s);
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declaration & operator=(declaration && s);
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friend bool is_eqp(declaration const & d1, declaration const & d2) { return d1.m_ptr == d2.m_ptr; }
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bool is_definition() const;
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bool is_axiom() const;
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bool is_theorem() const;
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bool is_var_decl() const;
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name get_name() const;
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level_param_names const & get_univ_params() const;
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expr get_type() const;
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expr get_value() const;
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bool is_opaque() const;
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unsigned get_weight() const;
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module_idx get_module_idx() const;
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bool use_conv_opt() const;
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friend declaration mk_definition(environment const & env, name const & n, level_param_names const & params, expr const & t,
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expr const & v, bool opaque, module_idx mod_idx, bool use_conv_opt);
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friend declaration mk_definition(name const & n, level_param_names const & params, expr const & t, expr const & v, bool opaque,
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unsigned weight, module_idx mod_idx, bool use_conv_opt);
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friend declaration mk_theorem(name const & n, level_param_names const & params, expr const & t, expr const & v, module_idx mod_idx);
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friend declaration mk_axiom(name const & n, level_param_names const & params, expr const & t);
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friend declaration mk_var_decl(name const & n, level_param_names const & params, expr const & t);
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};
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inline optional<declaration> none_declaration() { return optional<declaration>(); }
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inline optional<declaration> some_declaration(declaration const & o) { return optional<declaration>(o); }
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inline optional<declaration> some_declaration(declaration && o) { return optional<declaration>(std::forward<declaration>(o)); }
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declaration mk_definition(name const & n, level_param_names const & params, expr const & t, expr const & v,
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bool opaque = false, unsigned weight = 0, module_idx mod_idx = 0, bool use_conv_opt = true);
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declaration mk_definition(environment const & env, name const & n, level_param_names const & params, expr const & t, expr const & v,
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bool opaque = false, module_idx mod_idx = 0, bool use_conv_opt = true);
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declaration mk_theorem(name const & n, level_param_names const & params, expr const & t, expr const & v, module_idx mod_idx = 0);
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declaration mk_axiom(name const & n, level_param_names const & params, expr const & t);
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declaration mk_var_decl(name const & n, level_param_names const & params, expr const & t);
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}
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