#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include "util.h"

void *
must_malloc(size_t size)
{
	void *ret = malloc(size);
	if (ret == NULL) {
		fprintf(stderr, "Out of memory\n");
		exit(EXIT_ABNORMAL);
	}
}

void *
must_calloc(size_t nmemb, size_t size)
{
	void *ret = calloc(nmemb, size);
	if (ret == NULL) {
		fprintf(stderr, "Out of memory\n");
		exit(EXIT_ABNORMAL);
	}
	return ret;
}

void *
must_realloc(void *ptr, size_t size)
{
	void *ret = realloc(ptr, size);
	if (ret == NULL) {
		fprintf(stderr, "Out of memory\n");
		exit(EXIT_ABNORMAL);
	}
	return ret;
}

void
error(struct location loc, const char *fmt, ...)
{
	fprintf(stderr, "%s:%d:%d: ", loc.file, loc.line, loc.column);

	va_list ap;
	va_start(ap, fmt);
	vfprintf(stderr, fmt, ap);
	va_end(ap);

	fprintf(stderr, "\n");
	exit(EXIT_PARSE);
}