Method AddFunction

Code/CryEngine/CryScriptSystem/ScriptTable.cpp:778–825

/////////////////////////////////////////////////////////////////////

//////////////////////////////////////////////////////////////////////////
bool CScriptTable::AddFunction(const SUserFunctionDesc& fd)
{
	CHECK_STACK(L);

	assert(fd.pFunctor || fd.pUserDataFunc != 0);

	// Make function signature.
	char sFuncSignature[256];
	if (fd.sGlobalName[0] != 0)
		cry_sprintf(sFuncSignature, "%s.%s(%s)", fd.sGlobalName, fd.sFunctionName, fd.sFunctionParams);
	else
		cry_sprintf(sFuncSignature, "%s.%s(%s)", fd.sGlobalName, fd.sFunctionName, fd.sFunctionParams);

	PushRef();
	lua_pushstring(L, fd.sFunctionName);

	int8 nParamIdOffset = fd.nParamIdOffset;
	if (fd.pFunctor)
	{
		int nDataSize = sizeof(fd.pFunctor) + strlen(sFuncSignature) + 1 + 1;

		// Store functor in first upvalue.
		unsigned char* pBuffer = (unsigned char*)lua_newuserdata(L, nDataSize);
		memcpy(pBuffer, &fd.pFunctor, sizeof(fd.pFunctor));
		memcpy(pBuffer + sizeof(fd.pFunctor), &nParamIdOffset, 1);
		memcpy(pBuffer + sizeof(fd.pFunctor) + 1, sFuncSignature, strlen(sFuncSignature) + 1);
		lua_pushcclosure(L, StdCFunction, 1);
	}
	else
	{
		assert(fd.pDataBuffer != NULL && fd.nDataSize > 0);
		UserDataFunction function = fd.pUserDataFunc;
		int nSize = fd.nDataSize;
		int nTotalSize = sizeof(function) + sizeof(int) + nSize + strlen(sFuncSignature) + 1 + 1;
		// Store functor in first upvalue.
		unsigned char* pBuffer = (unsigned char*)lua_newuserdata(L, nTotalSize);
		memcpy(pBuffer, &function, sizeof(function));
		memcpy(pBuffer + sizeof(function), &nSize, sizeof(nSize));
		memcpy(pBuffer + sizeof(function) + sizeof(nSize), fd.pDataBuffer, nSize);
		memcpy(pBuffer + sizeof(function) + sizeof(nSize) + nSize, &nParamIdOffset, 1);
		memcpy(pBuffer + sizeof(function) + sizeof(nSize) + nSize + 1, sFuncSignature, strlen(sFuncSignature) + 1);
		lua_pushcclosure(L, StdCUserDataFunction, 1);
	}

	lua_rawset(L, -3);
	lua_pop(L, 1); // pop table.
	return true;
}

//////////////////////////////////////////////////////////////////////////
void* CScriptTable::operator new(size_t nSize)