自学教程：C++ CreateError函数代码示例

void Extension::SendBinaryToClient(int Subchannel){    if (Subchannel > 255 || Subchannel < 0)        CreateError("Error: Subchannel invalid; it must be between 0 and 255.");    else if (!ThreadData.Client)        CreateError("Error: Send Binary to Client was called without a Client being selected.");    else if (ThreadData.Client->IsClosed)        CreateError("Error: Send Binary to Client was called with a closed Client.");    else        ThreadData.Client->Send(Subchannel, SendMsg, SendMsgSize, 2);    if (AutomaticallyClearBinary)        ClearBinaryToSend();}

unsigned int Extension::UnsignedByte(int Index){	if (Index < 0)	{		CreateError("Could not read from received binary, index less than 0.");		return 0;	}	else if (ThreadData.ReceivedMsg.Size - Index < sizeof(unsigned char))	{		CreateError("Could not read from received binary, message is smaller than variable to be read. Check your index.");		return 0;	}	else		return (unsigned int)(*(unsigned char *)(ThreadData.ReceivedMsg.Content+Index));}

/* Parse a macro */VyObject ParseMacro(VyParseTree* code){	/* Parse the function arguments */	VyParseTree* args = GetListData(code, 1);	int numArguments = 0;	char* error = NULL;	Argument** arguments = ParseFunctionArguments(args, &numArguments, &error);	if(error != NULL){		return ToObject(CreateError(error, code));		}	/* Take the rest of the expressions in the lambda as code */	VyParseTree* exprList = MakeListTree();	int i;	for(i = 2; i < ListTreeSize(code); i++){		AddToList(exprList, GetListData(code, i));  	}	/* Take variables from the current function scope and the local scope */	Scope* funcScope = GetCurrentFunctionScope();	Scope* localScope = GetLocalScope();	/* Make sure the local scope isn't the global scope */	if(localScope == GetGlobalScope()) {		localScope = NULL; 	}	/* Merge the two scopes to get the current function scope */	Scope* closureScope = MergeScopes(funcScope, localScope);	/* Create the function from the data gathered */	VyMacro** mac = CreateMacro(arguments, numArguments, exprList, closureScope);	return ToObject(mac);	}

int TCPSocket::Connect(const char *ip, unsigned port){	if (connected || !bound)		return -1;  NetAddress remote;	SecureZeroMemory(&remote, sizeof(remote));	remote.sin_family = AF_INET;	remote.sin_port = htons(port);	remote.sin_addr.s_addr = inet_addr(ip);	int ret = connect(socket, (sockaddr*)&remote, sizeof(remote));  if (ret == SOCKET_ERROR) {    if ( !blocking && WSAGetLastError() == WSAEWOULDBLOCK )    {      struct timeval time;      time.tv_sec = 0;      time.tv_usec = 0;      //if ( select( 0, socket, socket, NULL, &time ) )			  return ret; // would have blocked    }    Error er = CreateError(Error::E_SocketError);    throw er;	}	connected = true;	return 0;}

void Extension::AddString(char * String){    if (String)        AddToSend(String, strlen(String) + 1);    else        CreateError("Adding string failed: pointer was null.");}

// Returns 0 for success, WSAGetLastError() otherwise.int NetAPI_::Init(){	if (init)		return 0;	// initialze winsock	int ret = WSAStartup(MAKEWORD(2,2), &wsData);  if (ret) {    Error er = CreateError(Error::E_NetworkInit);    throw er;	}	 // Save local IP address for later convience.	localIP = inet_ntoa(*(in_addr*)*gethostbyname("")->h_addr_list);	init = true;  Config config( "..//Data//Config.txt" );/  unsigned low = config.range_.low_;  unsigned high = config.range_.high_;  while (low <= high)    udp_ports.push_back(udp_port(low++,false));	return 0;}

ICCItem *CCodeChain::CreateParseError (int iLine, const CString &sError)//	CreateParseError////	Utility for creating a parse error	{	return CreateError(strPatternSubst(CONSTLIT("Line %d: %s"), iLine, sError));	}

bool Extension::YouAreChannelMaster(){    if (!ThreadData.Channel)    {        CreateError("Error, You Are Channel Master condition called without valid channel being selected.");        return false;    }    return ThreadData.Channel->IsChannelMaster();}

int main(int argc,char **argv){  PetscErrorCode ierr;  PetscInitialize(&argc,&argv,(char*)0,help);  ierr = PetscPrintf(PETSC_COMM_SELF,"This is a contrived example to test floating pointing/n");CHKERRQ(ierr);  ierr = PetscPrintf(PETSC_COMM_SELF,"It is not a true error./n");CHKERRQ(ierr);  ierr = PetscPrintf(PETSC_COMM_SELF,"Run with -fp_trap to catch the floating point error/n");CHKERRQ(ierr);  ierr = CreateError(0.0);CHKERRQ(ierr);  return 0;}