112 lines
1.8 KiB
C++
112 lines
1.8 KiB
C++
#include "precompile.h"
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#include "weakptr.h"
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#include "creature.h"
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CreatureWeakPtrChunk::CreatureWeakPtrChunk()
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{
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INIT_LIST_HEAD(&ptrs_);
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}
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CreatureWeakPtrChunk::~CreatureWeakPtrChunk()
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{
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Clear();
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}
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void CreatureWeakPtrChunk::Clear()
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{
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struct CreatureWeakPtr *weakptr, *tmp;
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struct list_head ptr_list;
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list_replace_init(&ptrs_, &ptr_list);
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list_for_each_entry_safe(weakptr, tmp, &ptr_list, entry_) {
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weakptr->Reset();
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}
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}
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void CreatureWeakPtrChunk::Set(Creature* c)
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{
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ptr_ = c;
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}
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CreatureWeakPtr::CreatureWeakPtr()
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{
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INIT_LIST_HEAD(&entry_);
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}
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CreatureWeakPtr::CreatureWeakPtr(const CreatureWeakPtr& x)
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{
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INIT_LIST_HEAD(&entry_);
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if (x.ptr_) {
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Attach(x.ptr_);
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}
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}
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CreatureWeakPtr::CreatureWeakPtr(CreatureWeakPtr&& x)
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{
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INIT_LIST_HEAD(&entry_);
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if (x.ptr_) {
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Attach(x.ptr_);
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x.Detach();
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}
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}
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CreatureWeakPtr& CreatureWeakPtr::operator=(const CreatureWeakPtr& x)
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{
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if (ptr_) {
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Detach();
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}
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if (x.ptr_) {
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Attach(x.ptr_);
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}
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return *this;
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}
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CreatureWeakPtr&& CreatureWeakPtr::operator=(CreatureWeakPtr&& x)
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{
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if (ptr_) {
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Detach();
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}
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if (x.ptr_) {
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Attach(x.ptr_);
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x.Detach();
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}
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abort();
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// return *this;
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}
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CreatureWeakPtr::~CreatureWeakPtr()
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{
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Reset();
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}
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void CreatureWeakPtr::Reset()
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{
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if (ptr_) {
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Detach();
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}
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}
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Creature* CreatureWeakPtr::Get()
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{
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return ptr_;
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}
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void CreatureWeakPtr::Attach(Creature* c)
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{
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Reset();
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CreatureWeakPtrChunk* chunk = c->GetWeakPtrChunk();
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if (c != chunk->ptr_) {
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abort();
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}
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ptr_ = c;
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list_add_tail(&entry_, &chunk->ptrs_);
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}
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void CreatureWeakPtr::Detach()
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{
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if (ptr_) {
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ptr_ = nullptr;
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list_del_init(&entry_);
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}
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}
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