選択できるのは25トピックまでです。
トピックは、先頭が英数字で、英数字とダッシュ('-')を使用した35文字以内のものにしてください。
187 行
2.9 KiB
187 行
2.9 KiB
#pragma once
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#include "gp/algorithm/modifiers.hpp"
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#include "gp/algorithm/move.hpp"
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#include "gp/buffer.hpp"
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#include "gp/function.hpp"
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template<typename T, typename allocator_t = void>
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class unique_ptr;
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template<typename T>
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class unique_ptr<T, void> {
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T* ptr;
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gp::function<bool(T*)> deallocator;
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public:
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unique_ptr()
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: ptr{nullptr}
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{}
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template<typename deal>
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unique_ptr(T* _ptr, deal func)
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: ptr{_ptr}
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, deallocator{func}
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{}
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unique_ptr(unique_ptr&) = delete;
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unique_ptr(unique_ptr&& oth)
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: ptr{oth.ptr}
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, deallocator{oth.deallocator}
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{
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oth.ptr = nullptr;
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}
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void operator=(unique_ptr&) = delete;
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void operator=(unique_ptr&& oth) {
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ptr = oth.ptr;
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deallocator = oth.deallocator;
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oth.ptr = nullptr;
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}
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operator bool() {
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return ptr != nullptr;
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}
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T* operator->() {
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return ptr;
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}
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T* operator*() {
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return ptr;
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}
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~unique_ptr() {
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if(ptr) {
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ptr->~T();
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gp_config::assertion(deallocator(ptr), "freeing unique_ptr failed");
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}
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}
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};
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template<typename T, typename allocator>
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class unique_ptr<T, gp::reference_wrapper<allocator>>{
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T* ptr;
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gp::reference_wrapper<allocator> ref;
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public:
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unique_ptr()
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: ptr{nullptr}
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{}
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template<typename ...Args>
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unique_ptr(Args ...args, allocator& _ref)
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: ref{_ref} {
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auto p = ref.get().allocate(sizeof(T));
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if(p)
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{
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ptr = new(p) T(args...);
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} else {
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ptr = nullptr;
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}
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}
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unique_ptr(T* _ptr, allocator& _ref)
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: ptr{_ptr}
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, ref{_ref}
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{}
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unique_ptr(unique_ptr&) = delete;
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unique_ptr(unique_ptr&& oth)
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: ptr{oth.ptr}
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, ref{oth.ref}
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{
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oth.ptr = nullptr;
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}
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void operator=(unique_ptr&) = delete;
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void operator=(unique_ptr&& oth) {
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ptr = oth.ptr;
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ref = oth.ref;
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oth.ptr = nullptr;
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}
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operator bool() {
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return ptr != nullptr;
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}
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T* operator->() {
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return ptr;
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}
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T* operator*() {
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return ptr;
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}
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~unique_ptr() {
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if(ptr) {
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ptr->~T();
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gp_config::assertion(ref.get().deallocate(ptr), "freeing unique_ptr failed");
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}
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}
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};
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template<typename T, typename allocator>
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class unique_ptr{
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T* ptr;
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allocator alloc;
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public:
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unique_ptr()
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: ptr{nullptr}
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{}
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unique_ptr(T* _ptr, allocator _alloc = allocator{})
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: ptr{_ptr}
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, alloc{_alloc}
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{}
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template<typename ...Args>
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unique_ptr(Args ...args, allocator _alloc = allocator{})
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: alloc{_alloc} {
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auto p = alloc.allocate(sizeof(T));
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if(p)
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{
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ptr = new(p) T(args...);
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} else {
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ptr = nullptr;
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}
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}
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unique_ptr(unique_ptr&) = delete;
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unique_ptr(unique_ptr&& oth)
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: ptr{oth.ptr}
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, alloc{oth.alloc}
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{
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oth.ptr = nullptr;
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}
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void operator=(unique_ptr&) = delete;
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void operator=(unique_ptr&& oth) {
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ptr = oth.ptr;
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alloc = oth.alloc;
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oth.ptr = nullptr;
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}
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operator bool() {
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return ptr != nullptr;
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}
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T* operator->() {
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return ptr;
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}
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T* operator*() {
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return ptr;
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}
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~unique_ptr() {
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if(ptr) {
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ptr->~T();
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gp_config::assertion(alloc.deallocate(ptr), "freeing unique_ptr failed");
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}
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}
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};
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