Function AR_RANGE

src/arithmetic/list_funcs/list_funcs.c:329–354

Create a new list of integers in the range of [start, end]. If a step was given the step between two consecutive list members will be this step. If step was not suppllied, it will be default as 1 "RETURN range(3,8,2)" will yield [3, 5, 7] */

   If step was not suppllied, it will be default as 1
   "RETURN range(3,8,2)" will yield [3, 5, 7] */
SIValue AR_RANGE(SIValue *argv, int argc, void *private_data) {
	int64_t start = argv[0].longval;
	int64_t end = argv[1].longval;
	int64_t interval = 1;
	if(argc == 3) {
		ASSERT(SI_TYPE(argv[2]) == T_INT64);
		interval = argv[2].longval;
		if(interval == 0) {
			ErrorCtx_RaiseRuntimeException("ArgumentError: step argument to range() can't be 0");
			// Incase expection handler wasn't set, return NULL.
			return SI_NullVal();
		}
	}

	uint64_t size = 0;
	if((end >= start && interval > 0) || (end <= start && interval < 0)) {
		size = 1 + (end - start) / interval;
	}

	SIValue array = SI_Array(size);
	for(uint64_t i = 0; i < size; i++) {
		SIArray_Append(&array, SI_LongVal(start));
		start += interval;
	}
	return array;
}

/* Checks if a value is in a given list.
   "RETURN 3 IN [1, 2, 3]" will return true */