37 lines
1.4 KiB
C++
37 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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#include "util/buffer.h"
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#include "kernel/expr.h"
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#include "kernel/replace_fn.h"
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namespace lean {
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expr copy(expr const & a) {
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scoped_expr_caching scope(false);
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switch (a.kind()) {
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case expr_kind::Var: return mk_var(var_idx(a));
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case expr_kind::Constant: return mk_constant(const_name(a), const_levels(a));
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case expr_kind::Sort: return mk_sort(sort_level(a));
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case expr_kind::Macro: return mk_macro(to_macro(a)->m_definition, macro_num_args(a), macro_args(a));
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case expr_kind::App: return mk_app(app_fn(a), app_arg(a));
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case expr_kind::Lambda: return mk_lambda(binding_name(a), binding_domain(a), binding_body(a), binding_info(a));
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case expr_kind::Pi: return mk_pi(binding_name(a), binding_domain(a), binding_body(a), binding_info(a));
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case expr_kind::Meta: return mk_metavar(mlocal_name(a), mlocal_type(a));
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case expr_kind::Local: return mk_local(mlocal_name(a), local_pp_name(a), mlocal_type(a), local_info(a));
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}
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lean_unreachable(); // LCOV_EXCL_LINE
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}
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expr deep_copy(expr const & e) {
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scoped_expr_caching scope(false);
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return replace(e, [](expr const & e, unsigned) {
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if (is_atomic(e))
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return some_expr(copy(e));
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else
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return none_expr();
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});
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}
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}
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