41 lines
1.4 KiB
C++
41 lines
1.4 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 "expr.h"
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#include "list.h"
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namespace lean {
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class context_entry;
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typedef list<context_entry> context;
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class context_entry {
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name m_name;
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expr m_domain;
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expr m_body;
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friend context extend(context const & c, name const & n, expr const & d, expr const & b);
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friend context extend(context const & c, name const & n, expr const & d);
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context_entry(name const & n, expr const & d, expr const & b):m_name(n), m_domain(d), m_body(b) {}
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context_entry(name const & n, expr const & d):m_name(n), m_domain(d) {}
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public:
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~context_entry() {}
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name const & get_name() const { return m_name; }
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expr const & get_domain() const { return m_domain; }
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expr const & get_body() const { return m_body; }
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};
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context const & lookup(context const & c, unsigned i);
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inline context extend(context const & c, name const & n, expr const & d, expr const & b) {
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return context(context_entry(n, d, b), c);
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}
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inline context extend(context const & c, name const & n, expr const & d) {
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return context(context_entry(n, d), c);
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}
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inline bool empty(context const & c) {
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return is_nil(c);
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}
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class expr_formatter;
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format pp(expr_formatter & f, context const & c);
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std::ostream & operator<<(std::ostream & out, context const & c);
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}
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