18 lines
582 B
C++
18 lines
582 B
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 <utility>
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#include "util/list.h"
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#include "util/optional.h"
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#include "kernel/expr.h"
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namespace lean {
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typedef list<std::pair<name, expr>> context;
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inline context extend(context const & c, name const & n, expr const & t) { return cons(mk_pair(n, t), c); }
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std::pair<name, expr> const & lookup(context const & c, unsigned i);
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optional<std::pair<name, expr>> find(context const & c, unsigned i);
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}
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