Function _AttributeSet_Remove

src/graph/entities/attribute_set.c:28–72

removes an attribute from set

// removes an attribute from set
static bool _AttributeSet_Remove
(
	AttributeSet *set,
	Attribute_ID attr_id
) {
	AttributeSet _set = *set;
	const uint16_t attr_count = _set->attr_count;

	// attribute-set can't be read-only
	ASSERT(ATTRIBUTE_SET_IS_READONLY(_set) == false);

	// locate attribute position
	for (uint16_t i = 0; i < attr_count; ++i) {
		if(attr_id != _set->attributes[i].id) {
			continue;
		}

		// if this is the last attribute free the attribute-set
		if(_set->attr_count == 1) {
			AttributeSet_Free(set);
			return true;
		}

		// attribute located
		// free attribute value
		SIValue_Free(_set->attributes[i].value);

		// overwrite deleted attribute with the last
		// attribute and shrink set
		_set->attributes[i] = _set->attributes[attr_count - 1];

		// update attribute count
		--_set->attr_count;

		// compute new set size
		size_t n = ATTRIBUTESET_BYTE_SIZE(_set);
		*set = rm_realloc(_set, n);

		// attribute removed
		return true;
	}

	// unable to locate attribute
	return false;
}

// returns number of attributes within the set
uint16_t AttributeSet_Count