C++ (Cpp) checkclass_str Examples

Example #1

File: tsvector_op.c Project: bocap/postgres

/*
 * is there value 'val' in array or not ?
 */
static bool
checkcondition_str(void *checkval, QueryOperand *val)
{
	CHKVAL	   *chkval = (CHKVAL *) checkval;
	WordEntry  *StopLow = chkval->arrb;
	WordEntry  *StopHigh = chkval->arre;
	WordEntry  *StopMiddle = StopHigh;
	int			difference = -1;
	bool		res = false;

	/* Loop invariant: StopLow <= val < StopHigh */
	while (StopLow < StopHigh)
	{
		StopMiddle = StopLow + (StopHigh - StopLow) / 2;
		difference = tsCompareString(chkval->operand + val->distance, val->length,
						   chkval->values + StopMiddle->pos, StopMiddle->len,
									 false);

		if (difference == 0)
		{
			res = (val->weight && StopMiddle->haspos) ?
				checkclass_str(chkval, StopMiddle, val) : true;
			break;
		}
		else if (difference > 0)
			StopLow = StopMiddle + 1;
		else
			StopHigh = StopMiddle;
	}

	if (!res && val->prefix)
	{
		/*
		 * there was a failed exact search, so we should scan further to find
		 * a prefix match.
		 */
		if (StopLow >= StopHigh)
			StopMiddle = StopHigh;

		while (res == false && StopMiddle < chkval->arre &&
			   tsCompareString(chkval->operand + val->distance, val->length,
						   chkval->values + StopMiddle->pos, StopMiddle->len,
							   true) == 0)
		{
			res = (val->weight && StopMiddle->haspos) ?
				checkclass_str(chkval, StopMiddle, val) : true;

			StopMiddle++;
		}
	}

	return res;
}

Example #2

File: query.c Project: berkeley-cs186/course-fa07

/*
 * is there value 'val' in array or not ?
 */
static bool
checkcondition_str(void *checkval, ITEM * val)
{
	WordEntry  *StopLow = ((CHKVAL *) checkval)->arrb;
	WordEntry  *StopHigh = ((CHKVAL *) checkval)->arre;
	WordEntry  *StopMiddle;
	int			difference;

	/* Loop invariant: StopLow <= val < StopHigh */

	while (StopLow < StopHigh)
	{
		StopMiddle = StopLow + (StopHigh - StopLow) / 2;
		difference = ValCompare((CHKVAL *) checkval, StopMiddle, val);
		if (difference == 0)
			return (val->weight && StopMiddle->haspos) ?
				checkclass_str((CHKVAL *) checkval, StopMiddle, val) : true;
		else if (difference < 0)
			StopLow = StopMiddle + 1;
		else
			StopHigh = StopMiddle;
	}

	return (false);
}