65 lines
2.1 KiB
C++
65 lines
2.1 KiB
C++
/*
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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 <string>
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#include "library/aux_recursors.h"
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#include "library/scoped_ext.h"
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#include "library/module.h"
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namespace lean {
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struct aux_recursor_ext : public environment_extension {
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name_set m_set;
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};
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struct aux_recursor_ext_reg {
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unsigned m_ext_id;
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aux_recursor_ext_reg() { m_ext_id = environment::register_extension(std::make_shared<aux_recursor_ext>()); }
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};
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static aux_recursor_ext_reg * g_ext = nullptr;
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static aux_recursor_ext const & get_extension(environment const & env) {
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return static_cast<aux_recursor_ext const &>(env.get_extension(g_ext->m_ext_id));
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}
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static environment update(environment const & env, aux_recursor_ext const & ext) {
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return env.update(g_ext->m_ext_id, std::make_shared<aux_recursor_ext>(ext));
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}
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static std::string * g_prv_key = nullptr;
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environment add_aux_recursor(environment const & env, name const & r) {
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aux_recursor_ext ext = get_extension(env);
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ext.m_set.insert(r);
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environment new_env = update(env, ext);
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return module::add(new_env, *g_prv_key, [=](environment const &, serializer & s) { s << r; });
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}
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bool is_aux_recursor(environment const & env, name const & r) {
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return get_extension(env).m_set.contains(r);
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}
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static void aux_recursor_reader(deserializer & d, shared_environment & senv,
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std::function<void(asynch_update_fn const &)> &,
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std::function<void(delayed_update_fn const &)> &) {
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name r;
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d >> r;
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senv.update([=](environment const & env) -> environment {
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aux_recursor_ext ext = get_extension(env);
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ext.m_set.insert(r);
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return update(env, ext);
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});
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}
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void initialize_aux_recursors() {
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g_ext = new aux_recursor_ext_reg();
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g_prv_key = new std::string("auxrec");
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register_module_object_reader(*g_prv_key, aux_recursor_reader);
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}
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void finalize_aux_recursors() {
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delete g_prv_key;
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delete g_ext;
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}
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}
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