首页 > 代码库 > 15) .实现可变参数的(成员/非成员)模板函数的回调，消除类似代码
15) .实现可变参数的(成员/非成员)模板函数的回调，消除类似代码
完整的源代码及用法测试代码可以在我的资源中去下载.
C++语法不支持模板函数/模板成员函数作为回调函数，同时把运行期代码向编译期代码转换也只有switch...case或者if..else能够实现。
如果case比较多的时候，代码非常臃肿，而且类似的大片代码中，往往只有一个参数的不同，其它都是相同的。这对于用户来说，都是一个大量的重复性的hard-code性的负担，而且也容易导致出错。
本库采用了封装，可以把运行性的switch...case/if..else分支选择转换为编译期的代码，支持模板函数的回调，并且支持最多6个可变参数（可以简易扩充参数个数），从而可以大幅度地减少代码量，(代码量可以减少到原代码的1/N，N为case数目)。并且由于是编译期代码，从而保证不会出错(出错将导致编译失败)。
并且附带提供了CEnumRange，可以检测一个枚举值是否在枚举范围内。
#ifndef __test_traverseEnum_h_
#define __test_traverseEnum_h_
/***********************************************************************************************************************
* Description : test file for <utility\traverseEnum.h>
* Author : Shen.Xiaolong (Shen Tony,2009-2014)
* Mail : xlshen2002@hotmail.com, xlshen@126.com
* verified platform : VS2008 (2014/11/02 11:42:08.21)
* copyright: : free to use / modify / sale in free and commercial software.
* Unique limit: MUST keep those copyright comments in all copies and in supporting documentation.
* usage demo : #define RUN_EXAMPLE_TRAVERSEENUM to run this demo
***********************************************************************************************************************/
#include "testconfig.h"
#include <utility/traverseEnum.h>
#include "test_macroDef.h"
#include "utility/macroDef.h"
#include "utility/parameterWrp.h"
//#define RUN_EXAMPLE_TRAVERSEENUM
#ifdef COMPILE_EXAMPLE_ALL
#define COMPILE_EXAMPLE_TRAVERSEENUM
#endif
#ifdef RUN_EXAMPLE_ALL
#define RUN_EXAMPLE_TRAVERSEENUM
#endif
#if defined(RUN_EXAMPLE_TRAVERSEENUM) && !defined(COMPILE_EXAMPLE_TRAVERSEENUM)
#define COMPILE_EXAMPLE_TRAVERSEENUM
#endif
////////////////////////////////////////////usage demo code//////////////////////////////////////////////////////////////////
#ifdef COMPILE_EXAMPLE_TRAVERSEENUM
//sequential enum value, it can apply SKIP_ENUM_NEXT except you want to skip some enum value(s)
enum SeqEunm {S_Val_Min,S_Val_1,S_Val_2,S_Val_3,S_Val_4,S_Val_5,S_Val_6,S_Val_7,S_Val_Max};
typedef UtilExt::CEnumRange<SeqEunm,S_Val_Min,S_Val_Max> SeqEnumRange;
SKIP_ENUM_ONE(SeqEnumRange,S_Val_4); //skip 4
//test SKIP_ENUM_ONE
typedef UtilExt::CEnumRange<SeqEunm,S_Val_1,S_Val_6> SeqEnumSkipOneRange;
// SKIP_ENUM_ONE(SeqEnumSkipOneRange,S_Val_1); //fail because S_Val_1 is head of SeqEnumSkipOneRange
// SKIP_ENUM_ONE(SeqEnumSkipOneRange,S_Val_6); //fail because S_Val_6 is tail of SeqEnumSkipOneRange
SKIP_ENUM_ONE(SeqEnumSkipOneRange,S_Val_3); //OK, S_Val_3 is not head or tail
//non-sequential enum type : value 2,4 is lack
enum NonSeqEunm
{
NS_Val_Min = 0 ,
NS_Val_1 = 1,
NS_Val_3 = 3,
NS_Val_5 = 5,
NS_Val_8 = 8,
NS_Val_Max
};
typedef UtilExt::CEnumRange<NonSeqEunm,NS_Val_Min,NS_Val_Max> NonSeqEnumRange;
//skip NS_Val_3 when traverse enum type "DemoEunm" : jump from NS_Val_2 to NS_Val_4
SKIP_ENUM_MIDDLE(NonSeqEnumRange,NS_Val_1,NS_Val_3); //skip 2
SKIP_ENUM_MIDDLE(NonSeqEnumRange,NS_Val_3,NS_Val_5); //skip 4
SKIP_ENUM_MIDDLE(NonSeqEnumRange,NS_Val_5,NS_Val_8); //skip 6 ,7
//SKIP_ENUM_NEXT(EnumRange,NS_Val_3,NS_Val_1); //Fail because NS_Val_3 > NS_Val_1
//SKIP_ENUM_NEXT(EnumRange,NS_Val_3,DemoEunm(NS_Val_Max+1)); //Fail because DemoEunm(NS_Val_Max+1) is not in range
namespace DemoUsage
{
template<SeqEunm TVal>
bool globalEnumFunc(int a,char* pStr)
{
printf("globalEnumFunc [%d],param=%d,%s",TVal+1,a,pStr?pStr:"NULL");
return true;
}
Declare_Template_Global_CallBack(::DemoUsage::,SeqEunm,globalEnumFunc);
struct CNonSeqEunmInterface_1
{
CNonSeqEunmInterface_1(int p) : m_bResult(false),m_param(p){};
template<NonSeqEunm TVal>
void apply()
{
dbgOutput(TXT("\n\n[NonSeqEunm]Enum value is %d."),TVal);
dbgOutput(TXT("\n[CEnumInterface_1::apply] %d"),TVal);
m_bResult = (TVal+m_param) > NS_Val_Max;
}
bool m_bResult;
int m_param;
};
Declare_Template_Mem_CallBack(::DemoUsage::,CNonSeqEunmInterface_1,NonSeqEunm,apply );
struct CNonSeqEunmInterface_2
{
CNonSeqEunmInterface_2(VCHAR* pStr) : m_bResult(false),m_pStr(pStr){};
template<NonSeqEunm TVal>
void apply()
{
dbgOutput(TXT("\n\n[NonSeqEunm]Enum value is %d."),TVal);
dbgOutput(TXT("\n[CEnumInterface_2::apply] %s %d"),m_pStr,TVal);
m_bResult = (TVal+2) > NS_Val_Max;
}
bool m_bResult;
VCHAR* m_pStr;
};
Declare_Template_Mem_CallBack(::DemoUsage::,CNonSeqEunmInterface_2,NonSeqEunm,apply );
struct CSeqEunmInterface_1
{
CSeqEunmInterface_1(int p) : m_bResult(false),m_param(p){};
template<SeqEunm TVal>
void apply()
{
dbgOutput(TXT("\n\n[SeqEunm]Enum value is %d."),TVal);
dbgOutput(TXT("\n[CSeqEunmInterface_1::apply] %d"),TVal);
m_bResult = (TVal+m_param) > NS_Val_Max;
}
bool m_bResult;
int m_param;
};
Declare_Template_Mem_CallBack(::DemoUsage::,CSeqEunmInterface_1,SeqEunm,apply );
struct CSeqEunmInterface_2
{
CSeqEunmInterface_2(VCHAR* pStr) : m_bResult(false),m_pStr(pStr){};
template<SeqEunm TVal>
void apply()
{
dbgOutput(TXT("\n\n[SeqEunm]Enum value is %d."),TVal);
dbgOutput(TXT("\n[CSeqEunmInterface_2::apply] %s %d"),m_pStr,TVal);
m_bResult = (TVal+2) > NS_Val_Max;
}
bool m_bResult;
VCHAR* m_pStr;
};
Declare_Template_Mem_CallBack(::DemoUsage::,CSeqEunmInterface_2,SeqEunm,apply );
Declare_Template_Mem_CallBack(::DemoUsage::,CTestEnumSuite,SeqEunm,printEnum );
Declare_Template_Mem_CallBack(::DemoUsage::,CTestEnumSuite,SeqEunm,printNext );
Declare_Template_Mem_CallBack(::DemoUsage::,CTestEnumSuite,SeqEunm,print2Param );
Declare_Template_Mem_CallBack(::DemoUsage::,CTestEnumSuite,SeqEunm,inOutParam );
class CTestEnumSuite
{
public:
template<SeqEunm TVal>
bool printEnum()
{
outputTxt((TXT("CTestEnumSuite::printEnum [%d]"),TVal));
return true;
}
template<SeqEunm TVal>
bool printNext()
{
outputTxt((TXT("CTestEnumSuite::printNext [%d]"),TVal+1));
return true;
}
template<SeqEunm TVal>
void inOutParam(char p1,int& outParam)
{
outputTxt((TXT("CTestEnumSuite::inOutParam [%d]"),TVal+1));
outParam = 4;
}
template<SeqEunm TVal>
bool print2Param(int a,char* pStr)
{
printf("CTestEnumSuite::print2Param [%d],param=%d,%s",TVal+1,a,pStr?pStr:"NULL");
return true;
}
void testEntry()
{
int a = 5;
char* pStr = "in testEntry";
SeqEunm tVal = SeqEunm(rand()%S_Val_Max);
//test member function
ASSERT_AND_LOG((CTraverseEnum<SeqEnumRange,true>::apply(tVal,CTestEnumSuite_SeqEunm_printEnum<CTestEnumSuite>(),makeParamPackage(*this))));
ASSERT_AND_LOG((CTraverseEnum<SeqEnumRange,true>::apply(tVal,CTestEnumSuite_SeqEunm_printNext<CTestEnumSuite>(),makeParamPackage(*this))));
ASSERT_AND_LOG((CTraverseEnum<SeqEnumRange,true>::apply(tVal,CTestEnumSuite_SeqEunm_print2Param<CTestEnumSuite>(),makeParamPackage(*this,a,pStr))));
ASSERT_AND_LOG((CTraverseEnum<SeqEnumRange,true>::apply(tVal,Template_Mem_Callback_Obj(CTestEnumSuite,SeqEunm,printEnum),makeParamPackage(*this))));
ASSERT_AND_LOG((CTraverseEnum<SeqEnumRange,true>::apply(tVal,Template_Mem_Callback_Obj(CTestEnumSuite,SeqEunm,printNext),makeParamPackage(*this))));
ASSERT_AND_LOG((CTraverseEnum<SeqEnumRange,true>::apply(tVal,Template_Mem_Callback_Obj(CTestEnumSuite,SeqEunm,print2Param),makeParamPackage(*this,a,pStr))));
//test in-out parameter
char p1 = 3;
int outP = 6;
ASSERT_AND_LOG((CTraverseEnum<SeqEnumRange,true>::apply(tVal,Template_Mem_Callback_Obj(CTestEnumSuite,SeqEunm,inOutParam ),makeParamPackage(*this,p1,outP))));
ASSERT_AND_LOG(6==outP);
ASSERT_AND_LOG((CTraverseEnum<SeqEnumRange,true>::apply(tVal,Template_Mem_Callback_Obj(CTestEnumSuite,SeqEunm,inOutParam ),makeParamPackage(*this,p1,MIOP(outP)))));
ASSERT_AND_LOG(4==outP);
//test global function
ASSERT_AND_LOG((CTraverseEnum<SeqEnumRange,true>::apply(tVal,_SeqEunm_globalEnumFunc(),makeParamPackage(a,pStr))));
ASSERT_AND_LOG((CTraverseEnum<SeqEnumRange,true>::apply(tVal,Template_Global_Callback_Obj(SeqEunm,globalEnumFunc),makeParamPackage(a,pStr))));
}
};
template<SeqEunm TVal >
struct TValMap;
template<>
struct TValMap<S_Val_6> : public Value2Type<bool (DemoUsage::CTestEnumSuite::*)(void) ,&CTestEnumSuite::printEnum<S_Val_6> > {};
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
inline void showUsage_traverseEnum()
{
PrintUsage();
using namespace UtilExt;
typedef SeqEnumRange::Min_T SEnumValueMin;
typedef SeqEnumRange::Max_T SEnumValueMax;
typedef NonSeqEnumRange::Min_T NSEnumValueMin;
typedef NonSeqEnumRange::Max_T NSEnumValueMax;
//test UtilExt.CEnumRange.Min_T/Max_T
Static_Assert((CGetEnumValue<typename NonSeqEnumRange::Min_T>::value=http://www.mamicode.com/=NS_Val_Min));
Static_Assert((CGetEnumValue<typename NonSeqEnumRange::Max_T>::value=http://www.mamicode.com/=NS_Val_Max));
Static_Assert((CGetEnumValue<typename SeqEnumRange::Min_T>::value=http://www.mamicode.com/=S_Val_Min));
Static_Assert((CGetEnumValue<typename SeqEnumRange::Max_T>::value=http://www.mamicode.com/=S_Val_Max));
//test UtilExt.CEnumValue.Next
Static_Assert((CGetEnumValue<typename CEnumValue<SeqEnumRange,S_Val_1>::Next<true>::type>::value=http://www.mamicode.com/=S_Val_2));
Static_Assert((CGetEnumValue<typename CEnumValue<SeqEnumRange,S_Val_1>::Next<false>::type>::value=http://www.mamicode.com/=S_Val_Min));
Static_Assert(!(CGetEnumValue<typename CEnumValue<SeqEnumRange,S_Val_1>::Next<false>::type>::value=http://www.mamicode.com/=S_Val_2));
Static_Assert((CGetEnumValue<typename CEnumValue<NonSeqEnumRange,NS_Val_1>::Next<true>::type>::value=http://www.mamicode.com/=NS_Val_3));
Static_Assert((CGetEnumValue<typename CEnumValue<NonSeqEnumRange,NS_Val_1>::Next<false>::type>::value=http://www.mamicode.com/=NS_Val_Min));
Static_Assert(!(CGetEnumValue<typename CEnumValue<NonSeqEnumRange,NS_Val_1>::Next<false>::type>::value=http://www.mamicode.com/=NS_Val_3));
//test UtilExt.CEnumValue.Last
Static_Assert((CGetEnumValue<typename CEnumValue<SeqEnumRange,S_Val_3>::Last<true>::type>::value=http://www.mamicode.com/=S_Val_2));
Static_Assert((CGetEnumValue<typename CEnumValue<SeqEnumRange,S_Val_3>::Last<false>::type>::value=http://www.mamicode.com/=S_Val_5)); //because SKIP_ENUM_ONE(SeqEnumRange,S_Val_4);
Static_Assert(!(CGetEnumValue<typename CEnumValue<SeqEnumRange,S_Val_3>::Last<false>::type>::value=http://www.mamicode.com/=S_Val_2));
Static_Assert((CGetEnumValue<typename CEnumValue<NonSeqEnumRange,NS_Val_3>::Last<true>::type>::value=http://www.mamicode.com/=NS_Val_1));
Static_Assert((CGetEnumValue<typename CEnumValue<NonSeqEnumRange,NS_Val_3>::Last<false>::type>::value=http://www.mamicode.com/=NS_Val_5));
Static_Assert(!(CGetEnumValue<typename CEnumValue<NonSeqEnumRange,NS_Val_3>::Last<false>::type>::value=http://www.mamicode.com/=NS_Val_1));
//test UtilExt.CGetEnumRange
Static_Assert((IsSameType<typename CGetEnumRange<SEnumValueMin>::type,SeqEnumRange>::value));
Static_Assert((IsSameType<typename CGetEnumRange<SEnumValueMax>::type,SeqEnumRange>::value));
Static_Assert((IsSameType<typename CGetEnumRange<CEnumValue<SeqEnumRange,S_Val_3> >::type,SeqEnumRange>::value));
Static_Assert((IsSameType<typename CGetEnumRange<CEnumValue<SeqEnumRange,S_Val_6> >::type,SeqEnumRange>::value));
Static_Assert((IsSameType<typename CGetEnumRange<CEnumValue<SeqEnumRange,S_Val_2> >::type,typename CGetEnumRange<CEnumValue<SeqEnumRange,S_Val_1> >::type>::value));
Static_Assert((IsSameType<typename CGetEnumRange<SEnumValueMax>::type,typename CGetEnumRange<SEnumValueMin>::type>::value));
Static_Assert((IsSameType<typename CGetEnumRange<NSEnumValueMin>::type,NonSeqEnumRange>::value));
Static_Assert((IsSameType<typename CGetEnumRange<NSEnumValueMax>::type,NonSeqEnumRange>::value));
Static_Assert((IsSameType<typename CGetEnumRange<CEnumValue<NonSeqEnumRange,NS_Val_3> >::type,NonSeqEnumRange>::value));
Static_Assert((IsSameType<typename CGetEnumRange<CEnumValue<NonSeqEnumRange,NS_Val_5> >::type,NonSeqEnumRange>::value));
Static_Assert((IsSameType<typename CGetEnumRange<CEnumValue<NonSeqEnumRange,NS_Val_Min> >::type,typename CGetEnumRange<CEnumValue<NonSeqEnumRange,NS_Val_1> >::type>::value));
Static_Assert((IsSameType<typename CGetEnumRange<NSEnumValueMax>::type,typename CGetEnumRange<NSEnumValueMin>::type>::value));
//test UtilExt.CGetEnumRangeMax/CGetEnumRangeMin
Static_Assert((CGetEnumRangeMax<CEnumValue<NonSeqEnumRange,NS_Val_3> >::value=http://www.mamicode.com/=NS_Val_Max));
Static_Assert((CGetEnumRangeMax<CEnumValue<NonSeqEnumRange,NS_Val_5> >::value=http://www.mamicode.com/=NS_Val_Max));
Static_Assert((CGetEnumRangeMax<CEnumValue<SeqEnumRange,S_Val_3> >::value=http://www.mamicode.com/=S_Val_Max));
Static_Assert((CGetEnumRangeMax<CEnumValue<SeqEnumRange,S_Val_5> >::value=http://www.mamicode.com/=S_Val_Max));
Static_Assert((CGetEnumRangeMin<CEnumValue<NonSeqEnumRange,NS_Val_3> >::value=http://www.mamicode.com/=NS_Val_Min));
Static_Assert((CGetEnumRangeMin<CEnumValue<NonSeqEnumRange,NS_Val_5> >::value=http://www.mamicode.com/=NS_Val_Min));
Static_Assert((CGetEnumRangeMin<CEnumValue<SeqEnumRange,S_Val_3> >::value=http://www.mamicode.com/=S_Val_Min));
Static_Assert((CGetEnumRangeMin<CEnumValue<SeqEnumRange,S_Val_5> >::value=http://www.mamicode.com/=S_Val_Min));
//test UtilExt.CGetEnumValue
Static_Assert((CGetEnumValue<typename CEnumValue<NonSeqEnumRange,NS_Val_3>::Next<true>::type>::value=http://www.mamicode.com/=NS_Val_5));
Static_Assert((CGetEnumValue<typename CEnumValue<SeqEnumRange,S_Val_3>::Next<true>::type>::value=http://www.mamicode.com/=S_Val_5)); //because SKIP_ENUM_ONE(SeqEnumRange,S_Val_4);
//test UtilExt.CGetEnumType
Static_Assert((IsSameType<typename CGetEnumType<SEnumValueMin>::type,typename CGetEnumType<SEnumValueMax>::type>::value));
Static_Assert((IsSameType<typename CGetEnumType<NSEnumValueMin>::type,typename CGetEnumType<NSEnumValueMax>::type>::value));
Static_Assert((IsSameType<typename CGetEnumType<NonSeqEnumRange>::type,typename CGetEnumType<NSEnumValueMax>::type>::value));
Static_Assert((IsSameType<typename CGetEnumType<NonSeqEnumRange>::type,typename CGetEnumType<NSEnumValueMin>::type>::value));
Static_Assert(!(IsSameType<typename CGetEnumType<NSEnumValueMin>::type,typename CGetEnumType<SEnumValueMin>::type>::value));
//test UtilExt.CEnumInRange
Static_Assert(!(CEnumInRange<typename NSEnumValueMin::Last<true>::type>::value));
Static_Assert((CEnumInRange<typename NSEnumValueMax::Last<true>::type>::value));
Static_Assert((CEnumInRange<typename NSEnumValueMin::Next<true>::type>::value));
Static_Assert(!(CEnumInRange<typename NSEnumValueMax::Next<true>::type>::value));
Static_Assert((CEnumInRange<typename NSEnumValueMin::Last<false>::type>::value));
Static_Assert(!(CEnumInRange<typename NSEnumValueMax::Last<false>::type>::value));
Static_Assert(!(CEnumInRange<typename NSEnumValueMin::Next<false>::type>::value));
Static_Assert((CEnumInRange<typename NSEnumValueMax::Next<false>::type>::value));
CNonSeqEunmInterface_1 nsCallObj_1(rand()%NS_Val_Max);
CNonSeqEunmInterface_2 nsCallObj_2(TXT("I am CEnumInterface_2 :"));
CSeqEunmInterface_1 sCallObj_1(rand()%S_Val_Max);
CSeqEunmInterface_2 sCallObj_2(TXT("I am CSeqEunmInterface_2 :"));
CTestEnumSuite testObj;
testObj.testEntry();
//test UtilExt.CTraverseEnum.apply
ASSERT_AND_LOG((CTraverseEnum<NonSeqEnumRange,true>::apply(NS_Val_5,Template_Mem_Callback_Obj(CNonSeqEunmInterface_1,NonSeqEunm,apply),makeParamPackage(nsCallObj_1)))); //test OK case
ASSERT_AND_LOG((CTraverseEnum<NonSeqEnumRange,false>::apply(NS_Val_5,Template_Mem_Callback_Obj(CNonSeqEunmInterface_1,NonSeqEunm,apply),makeParamPackage(nsCallObj_1)))); //test OK case
ASSERT_AND_LOG((CTraverseEnum<SeqEnumRange,true>::apply(S_Val_5,Template_Mem_Callback_Obj(CSeqEunmInterface_1,SeqEunm,apply),makeParamPackage(sCallObj_1)))); //test OK case
ASSERT_AND_LOG((CTraverseEnum<SeqEnumRange,false>::apply(S_Val_5,Template_Mem_Callback_Obj(CSeqEunmInterface_1,SeqEunm,apply),makeParamPackage(sCallObj_1)))); //test OK case
//test UtilExt.CTraverseEnum.applyFrom
ASSERT_AND_LOG((CTraverseEnum<NonSeqEnumRange,true>::applyFrom<NS_Val_1>(NS_Val_3,Template_Mem_Callback_Obj(CNonSeqEunmInterface_2,NonSeqEunm,apply),makeParamPackage(nsCallObj_2)))); //test OK case
ASSERT_AND_LOG((CTraverseEnum<NonSeqEnumRange,false>::applyFrom<NS_Val_5>(NS_Val_3,Template_Mem_Callback_Obj(CNonSeqEunmInterface_2,NonSeqEunm,apply),makeParamPackage(nsCallObj_2)))); //test OK case
ASSERT_AND_LOG((CTraverseEnum<SeqEnumRange,true>::applyFrom<S_Val_1>(S_Val_3,Template_Mem_Callback_Obj(CSeqEunmInterface_2,SeqEunm,apply),makeParamPackage(sCallObj_2)))); //test OK case
ASSERT_AND_LOG((CTraverseEnum<SeqEnumRange,false>::applyFrom<S_Val_5>(S_Val_3,Template_Mem_Callback_Obj(CSeqEunmInterface_2,SeqEunm,apply),makeParamPackage(sCallObj_2)))); //test OK case
#if defined(_MSC_VER) && (WINVER >= 0x0500)
#pragma push_macro("_Assert_Trigger")
#pragma push_macro("ChkExceptionThrow")
#undef _Assert_Trigger
#define _Assert_Trigger()
#undef ChkExceptionThrow
#define ChkExceptionThrow()
#endif //end defined(_MSC_VER)
ASSERT_AND_LOG((CTraverseEnum<NonSeqEnumRange,true>::apply(NonSeqEunm(NS_Val_Max+2),Template_Mem_Callback_Obj(CNonSeqEunmInterface_1 ,NonSeqEunm,apply),makeParamPackage(nsCallObj_1)))); //test Failure case because DemoEunm(NS_Val_Max+2) is not in range
ASSERT_AND_LOG((CTraverseEnum<NonSeqEnumRange,false>::apply(NonSeqEunm(NS_Val_Min-2),Template_Mem_Callback_Obj(CNonSeqEunmInterface_1 ,NonSeqEunm,apply),makeParamPackage(nsCallObj_1)))); //test Failure case because DemoEunm(NS_Val_Min-2) is not in range
ASSERT_AND_LOG((CTraverseEnum<SeqEnumRange,true>::apply(SeqEunm(S_Val_Max+2),Template_Mem_Callback_Obj(CSeqEunmInterface_1,SeqEunm,apply),makeParamPackage(sCallObj_1)))); //test Failure case because DemoEunm(S_Val_Max+2) is not in range
ASSERT_AND_LOG((CTraverseEnum<SeqEnumRange,false>::apply(SeqEunm(S_Val_Min-2),Template_Mem_Callback_Obj(CSeqEunmInterface_1,SeqEunm,apply),makeParamPackage(sCallObj_1)))); //test Failure case because DemoEunm(S_Val_Min-2) is not in range
ASSERT_AND_LOG((CTraverseEnum<NonSeqEnumRange,true>::applyFrom<NS_Val_5>(NS_Val_3,Template_Mem_Callback_Obj(CNonSeqEunmInterface_2,NonSeqEunm,apply),makeParamPackage(nsCallObj_2)))); //test Failure case because traverse from NS_Val_5. (NS_Val_3 < NS_Val_5)
ASSERT_AND_LOG((CTraverseEnum<NonSeqEnumRange,false>::applyFrom<NS_Val_1>(NS_Val_3,Template_Mem_Callback_Obj(CNonSeqEunmInterface_2,NonSeqEunm,apply),makeParamPackage(nsCallObj_2)))); //test Failure case because reversed traverse from NS_Val_1. (NS_Val_1 < NS_Val_3)
ASSERT_AND_LOG((CTraverseEnum<SeqEnumRange,true>::applyFrom<S_Val_5>(S_Val_3,Template_Mem_Callback_Obj(CSeqEunmInterface_2,SeqEunm,apply),makeParamPackage(sCallObj_2)))); //test Failure case because traverse from S_Val_5. (S_Val_3 < S_Val_5)
ASSERT_AND_LOG((CTraverseEnum<SeqEnumRange,false>::applyFrom<S_Val_1>(S_Val_3,Template_Mem_Callback_Obj(CSeqEunmInterface_2,SeqEunm,apply),makeParamPackage(sCallObj_2)))); //test Failure case because reversed traverse from S_Val_1. (S_Val_1 < S_Val_3)
#if defined(_MSC_VER) && (WINVER >= 0x0500)
#pragma pop_macro("_Assert_Trigger")
#pragma pop_macro("ChkExceptionThrow")
#endif //end defined(_MSC_VER)
}
#ifdef RUN_EXAMPLE_TRAVERSEENUM
InitRunFunc(showUsage_traverseEnum);
#endif //RUN_EXAMPLE_TRAVERSEENUM
}
#endif // COMPILE_EXAMPLE_TRAVERSEENUM
#endif // __test_TRAVERSEENUM_h_
15) .实现可变参数的(成员/非成员)模板函数的回调，消除类似代码