82 lines
2.9 KiB
C++
82 lines
2.9 KiB
C++
#ifndef HGL_COMP_OPERATOR_INCLUDE
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#define HGL_COMP_OPERATOR_INCLUDE
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#include<hgl/TypeFunc.h>
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namespace hgl
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{
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#define CompOperator(name,compfunc) const bool operator > (name i)const {return compfunc(i)>0;} \
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const bool operator < (name i)const {return compfunc(i)<0;} \
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const bool operator >=(name i)const {return compfunc(i)>=0;}\
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const bool operator <=(name i)const {return compfunc(i)<=0;}\
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const bool operator ==(name i)const {return compfunc(i)==0;}\
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const bool operator !=(name i)const {return compfunc(i)!=0;}
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#define CompOperatorMemcmp(name) int _Comp(name data)const{return memcmp(this,&data,sizeof(name));} \
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CompOperator(name,_Comp)
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/**
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* 比较处理模板基类
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*/
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template<typename T> class Comparator ///比较处理模板基类
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{
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public:
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/**
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* 比较函数，需被特例化或派生实现
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*/
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virtual int compare(const T &a,const T &b)const
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{
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return 0; // 如 return(a-b); ，但这个函数正确情况下不应该会被调用
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}
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/**
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* 交换函数
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*/
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virtual void exchange(T &a,T &b)
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{
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hgl_swap(a,b);
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}
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/**
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* 复制数据
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*/
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virtual void cpy(T *t,T *s)
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{
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memcpy(t,s,sizeof(T));
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}
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};//class Comparator
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//针对原生类型的特例化版本，做适当加速
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#define COMPARATOR_ORIGIN_TYPE(type) template<> class Comparator<type> \
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{ \
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public: \
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int compare(const type &a,const type &b)const{return a-b;} \
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void exchange(type &a,type &b){type t;t=a;a=b;b=t;} \
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void cpy(type *t,type *s){*t=*s;} \
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};
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COMPARATOR_ORIGIN_TYPE(int8)
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COMPARATOR_ORIGIN_TYPE(int16)
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COMPARATOR_ORIGIN_TYPE(int32)
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COMPARATOR_ORIGIN_TYPE(int64)
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COMPARATOR_ORIGIN_TYPE(uint8)
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COMPARATOR_ORIGIN_TYPE(uint16)
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COMPARATOR_ORIGIN_TYPE(uint32)
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COMPARATOR_ORIGIN_TYPE(uint64)
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COMPARATOR_ORIGIN_TYPE(float)
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COMPARATOR_ORIGIN_TYPE(double)
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COMPARATOR_ORIGIN_TYPE(char)
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COMPARATOR_ORIGIN_TYPE(wchar_t)
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#if HGL_OS != HGL_OS_Windows
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COMPARATOR_ORIGIN_TYPE(u16char)
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#endif//HGL_OS != HGL_OS_Windows
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COMPARATOR_ORIGIN_TYPE(char32_t)
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#undef COMPARATOR_ORIGIN_TYPE
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}//namespace hgl
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#endif//HGL_COMP_OPERATOR_INCLUDE
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