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add ToArrays() and Remove() functions at Collection template.

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This commit is contained in:
hyzboy 2021-03-11 20:04:33 +08:00
parent ec44cb756e
commit 16c7c8a55d
1 changed files with 36 additions and 4 deletions
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40
inc/hgl/type/Collection.h
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@ -28,11 +28,15 @@ namespace hgl
SAFE_CLEAR(memory_block);
}
virtual MemoryBlock * GetMemoryBlock()const{return memory_block;}
virtual MemoryBlock * GetMemoryBlock()const{return memory_block;} ///<获取整个合集所用的内存块
virtual T * ToArray()const{return (T *)(memory_block->Get());} ///<按C阵列方式访问数据
virtual const uint64 GetCount()const{return data_count;}
virtual const bool IsEmpty()const{return !data_count;}
virtual const uint64 GetCount()const{return data_count;} ///<获取合集内的数据个数
virtual const bool IsEmpty()const{return !data_count;} ///<当前合集是否为空
/**
* 增加一个数据到合集
*/
virtual bool Add(const T &obj)
{
if(!memory_block->Alloc((data_count+1)*sizeof(T)))
@ -45,6 +49,9 @@ namespace hgl
return(true);
}
/**
* 增加一整个合集的数据
*/
virtual bool Add(const Collection<T> &c)
{
const uint64 source_size=c.GetCount();
@ -57,10 +64,35 @@ namespace hgl
return memory_block->Write(data_count*sizeof(T),GetMemoryBlock(),0,source_size);
}
/**
* 清空整个合集(并不释放内存)
*/
virtual void Clear()
{
data_count=0;
if(memory_block)memory_block->Clear();
}
/**
* 移除指定个连续数据
* @param start 起始索引
* @param count 数据个数
*/
virtual bool Remove(const uint64 start,const uint64 count)
{
if(start+count>data_count)
return(false);
if(start+count<data_count)
memory_block->Move( sizeof(T)*start,
sizeof(T)*(start+count),
sizeof(T)*(data_count-start-count)); //将最后一段数据移到前面来
//else
//{
// 如果start_count==data_count代表要移除的数据本就在最后，那就不用move处理了
//}
data_count-=count;
return(true);
}
};//class Collection
}//namespace hgl