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// Functions that operate on numeric ranges
#include <ctype.h>
#include <err.h>
#include <gc.h>
#include <gc/cord.h>
#include <math.h>
#include <stdbool.h>
#include <stdint.h>
#include <stdlib.h>
#include <sys/param.h>
#include "types.h"
#include "util.h"
static int32_t Range$compare(const Range_t *x, const Range_t *y, const TypeInfo *type)
{
(void)type;
int32_t diff = (x->first > y->first) - (x->first < y->first);
if (diff != 0) return diff;
diff = (x->last > y->last) - (x->last < y->last);
if (diff != 0) return diff;
return (x->step > y->step) - (x->step < y->step);
}
static bool Range$equal(const Range_t *x, const Range_t *y, const TypeInfo *type)
{
(void)type;
return (x->first == y->first) && (x->last == y->last) && (x->step == y->step);
}
static CORD Range$as_text(const Range_t *r, bool use_color, const TypeInfo *type)
{
(void)type;
if (!r) return "Range";
return CORD_asprintf(use_color ? "\x1b[0;1mRange\x1b[m(first=\x1b[35m%ld\x1b[m, last=\x1b[35m%ld\x1b[m, step=\x1b[35m%ld\x1b[m)"
: "Range(first=%ld, last=%ld, step=%ld)", r->first, r->last, r->step);
}
public Range_t Range$reversed(Range_t r)
{
return (Range_t){r.last, r.first, -r.step};
}
public Range_t Range$by(Range_t r, int64_t step)
{
return (Range_t){r.first, r.last, step*r.step};
}
public const TypeInfo Range = {sizeof(Range_t), __alignof(Range_t), {.tag=CustomInfo, .CustomInfo={
.as_text=(void*)Range$as_text,
.compare=(void*)Range$compare,
.equal=(void*)Range$equal,
}}};
// vim: ts=4 sw=0 et cino=L2,l1,(0,W4,m1,\:0
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