57 lines
1.4 KiB
C++
57 lines
1.4 KiB
C++
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/*
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Copyright (c) 2015 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 "util/interrupt.h"
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#include "library/idx_metavar.h"
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#ifndef LEAN_INSTANTIATE_METAIDX_CACHE_CAPACITY
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#define LEAN_INSTANTIATE_METAIDX_CACHE_CAPACITY 1024*8
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#endif
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namespace lean {
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static name * g_tmp_prefix = nullptr;
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void initialize_idx_metavar() {
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g_tmp_prefix = new name(name::mk_internal_unique_name());
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}
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void finalize_idx_metavar() {
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delete g_tmp_prefix;
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}
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level mk_idx_metauniv(unsigned i) {
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return mk_meta_univ(name(*g_tmp_prefix, i));
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}
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expr mk_idx_metavar(unsigned i, expr const & type) {
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return mk_metavar(name(*g_tmp_prefix, i), type);
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}
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bool is_idx_metauniv(level const & l) {
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if (!is_meta(l))
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return false;
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name const & n = meta_id(l);
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return !n.is_atomic() && n.is_numeral() && n.get_prefix() == *g_tmp_prefix;
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}
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unsigned to_meta_idx(level const & l) {
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lean_assert(is_idx_meta_univ(l));
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return meta_id(l).get_numeral();
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}
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bool is_idx_metavar(expr const & e) {
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if (!is_metavar(e))
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return false;
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name const & n = mlocal_name(e);
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return !n.is_atomic() && n.is_numeral() && n.get_prefix() == *g_tmp_prefix;
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}
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unsigned to_meta_idx(expr const & e) {
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lean_assert(is_idx_meta(e));
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return mlocal_name(e).get_numeral();
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}
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}
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