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126 lines
3.9 KiB
C++
126 lines
3.9 KiB
C++
/**
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* Copyright (c) 2021, Timothy Stack
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*
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* * Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* * Neither the name of Timothy Stack nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ''AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
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* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* @file injector.bind.hh
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*/
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#ifndef lnav_injector_bind_hh
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#define lnav_injector_bind_hh
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#include "injector.hh"
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namespace injector {
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namespace details {
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template<typename I, typename R, typename ...Args>
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std::function<std::shared_ptr<I>()> create_factory(R (*)(Args...)) {
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return []() {
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return std::make_shared<I>(::injector::get<Args>()...);
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};
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}
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template<typename I,
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std::enable_if_t<has_injectable<I>::value, bool> = true>
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std::function<std::shared_ptr<I>()> create_factory() {
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typename I::injectable *i = nullptr;
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return create_factory<I>(i);
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}
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template<typename I,
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std::enable_if_t<!has_injectable<I>::value, bool> = true>
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std::function<std::shared_ptr<I>()> create_factory() noexcept {
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return []() {
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return std::make_shared<I>();
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};
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}
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}
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template<typename T, typename...Annotations>
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struct bind : singleton_storage<T, Annotations...> {
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static bool to_singleton() noexcept {
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static T storage;
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singleton_storage<T, Annotations...>::ss_data = &storage;
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return true;
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}
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template<typename...Args>
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static bool to_instance(T* (*f)(Args...)) noexcept {
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singleton_storage<T, Annotations...>::ss_data = f(::injector::get<Args>()...);
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return true;
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}
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static bool to_instance(T* data) noexcept {
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singleton_storage<T, Annotations...>::ss_data = data;
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return true;
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}
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template<typename I>
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static bool to() noexcept {
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singleton_storage<T, Annotations...>::ss_factory =
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details::create_factory<I>();
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return true;
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}
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};
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template<typename T>
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struct bind_multiple : multiple_storage<T> {
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bind_multiple() noexcept = default;
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template<typename I>
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bind_multiple& add() noexcept {
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multiple_storage<T>::get_factories()[typeid(I).name()] =
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details::create_factory<I>();
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return *this;
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}
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template<typename I, typename...Annotations>
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bind_multiple& add_singleton() noexcept {
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auto factory = details::create_factory<I>();
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auto single = factory();
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if (sizeof...(Annotations) > 0) {
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bind<T, Annotations...>::to_instance(single.get());
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}
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bind<I, Annotations...>::to_instance(single.get());
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multiple_storage<T>::get_factories()[typeid(I).name()] = [single]() {
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return single;
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};
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return *this;
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}
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};
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}
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#endif
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