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What is the most bizar syntax you have ever written?

Marsupial Rodentia · 2001-07-29T11:38:33

Recently I implemented a simple file parser for my script files. The code got tricky when I used pointers to __thiscall member functions, and then made the function call via those pointers. // My.h #define NUM_FNS 3 struct CMyClass : public CSomeBase { // Pointer to member function // Here is the bizar syntax typedef bool (CMyClass::* PTHISFN)( void ); // Struct to hold the pointer struct FnCallEtAl { int nSomeKindOfId; PTHISFN pFn; }; // Static member (array of function pointers) static FnCallEtAl MyMemberFns[NUM_FNS]; // Member function that will be pointed to bool MyFn1( void ); bool MyFn2( void ); bool MyFn3( void ); // Function that will call others via pointers void Run(); }; // Macro to help declare data // (in case the FnCallEtAl struct changes) #define TABITEM( ID, FN ) { ID, FN }, // My.cpp #inlcude "My.h" // Instantiate static data members CMyClass::FnCallEtAl CMyClass::MyMemberFns[NUM_FNS] = { TABITEM( 1, MyFn1 ) TABITEM( 2, MyFn2 ) TABITEM( 0, MyFn3 ) }; CMyClass::Run() { int nId; while( SomeBaseClassFn( &nId ) ) { // Here is the really tricky code // Tricky because you have to use the this pointer // to make the function call. if( !(this->*(MyMemberFns[nId].pFn))() ) return; } } bool CMyClass::MyFn1() { return true; } So what is the most bizar code or the tricky syntax you have ever written?

General and Gameplay Programming Programming

Started by Marsupial Rodentia December 05, 2000 03:34 PM

19 comments, last by Marsupial Rodentia 23 years, 6 months ago

LordElectro

122

July 29, 2001 11:38 AM

  if( !fWak->Read(fHandle, &(pImageInfo->dwDataStart), sizeof(pImageInfo->dwDataStart)) || !fWak->Read(fHandle, &bmpHeader, sizeof(bmpHeader)) )

Two function calls in one if statement. It''s not all that weird, but it saved me 5 lines of code and made things look a lot neater. It''s just nice seeing how versatile C++ is.

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What is the most bizar syntax you have ever written?

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What is the most bizar syntax you have ever written?

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