#include "a.h"
#include <ctype.h>
#include <stdlib.h>
#include <string.h>

int
a_isidstart(int c)
{
	return c == '_' || (c >= 'A' && c <= 'Z') || (c >= 'a' && c <= 'z');
}

int
a_isidcont(int c)
{
	return a_isidstart(c) || (c >= '0' && c <= '9') || c == '.';
}

i64
a_parsenum(const char *s, char **end)
{
	/* Let strtoll handle the sign itself: hand-stripping '-' then
	 * negating the result fails for LLONG_MIN because the positive
	 * magnitude (2^63) doesn't fit in long long, strtoll clamps to
	 * LLONG_MAX, and the negation lands one short. */
	return (i64)strtoll(s, end, 0);
}