Function SIValue_HashUpdate

src/value.c:686–748

}

void SIValue_HashUpdate(SIValue v, XXH64_state_t *state) {
	// handles null value and defaults
	int64_t null = 0;
	XXH64_hash_t inner_hash;
	// in case of identical binary representation of the value,
	// we should hash the type as well
	SIType t = SI_TYPE(v);

	switch(t) {
		case T_NULL:
			XXH64_update(state, &t, sizeof(t));
			XXH64_update(state, &null, sizeof(null));
			return;
		case T_STRING:
			XXH64_update(state, &t, sizeof(t));
			XXH64_update(state, v.stringval, strlen(v.stringval));
			return;
		case T_INT64:
			// change type to numeric
			t = SI_NUMERIC;
			XXH64_update(state, &t, sizeof(t));
			XXH64_update(state, &v.longval, sizeof(v.longval));
			return;
		case T_BOOL:
			XXH64_update(state, &t, sizeof(t));
			XXH64_update(state, &v.longval, sizeof(v.longval));
			return;
		case T_DOUBLE:
			t = SI_NUMERIC;
			XXH64_update(state, &t, sizeof(t));
			// check if the double value is actually an integer
			// if so, hash it as Long
			int64_t casted = (int64_t) v.doubleval;
			double diff = v.doubleval - casted;
			if(diff != 0) XXH64_update(state, &v.doubleval, sizeof(v.doubleval));
			else XXH64_update(state, &casted, sizeof(casted));
			return;
		case T_EDGE:
			inner_hash = SIEdge_HashCode(v);
			XXH64_update(state, &inner_hash, sizeof(inner_hash));
			return;
		case T_NODE:
			inner_hash = SINode_HashCode(v);
			XXH64_update(state, &inner_hash, sizeof(inner_hash));
			return;
		case T_ARRAY:
			inner_hash = SIArray_HashCode(v);
			XXH64_update(state, &inner_hash, sizeof(inner_hash));
			return;
		case T_MAP:
			inner_hash = Map_HashCode(v);
			XXH64_update(state, &inner_hash, sizeof(inner_hash));
			return;
		case T_PATH:
			inner_hash = SIPath_HashCode(v);
			XXH64_update(state, &inner_hash, sizeof(inner_hash));
			return;
			// TODO: Implement for temporal types once we support them.