18 lines
545 B
C++
18 lines
545 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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#include "kernel/find_fn.h"
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#include "library/occurs.h"
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namespace lean {
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bool occurs(expr const & n, expr const & m) {
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return static_cast<bool>(find(m, [&](expr const & e, unsigned) { return n == e; }));
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}
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bool occurs(name const & n, expr const & m) {
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return static_cast<bool>(find(m, [&](expr const & e, unsigned) { return is_constant(e) && const_name(e) == n; }));
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}
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}
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