Exemplo n.º 1
0
SpnSourceLocation spn_dbg_get_raw_source_location(SpnHashMap *debug_info, ptrdiff_t address)
{
	SpnSourceLocation loc = { 0, 0 };

	if (debug_info) {
		SpnValue vinsns = spn_hashmap_get_strkey(debug_info, "insns");
		SpnArray *insns = arrayvalue(&vinsns);

		size_t n = spn_array_count(insns);
		size_t i;

		/* this is a 'long', because there's no PTRDIFF_MAX in C89 */
		long address_window_width = LONG_MAX;

		/* search for narrowest bytecode range containing 'address'.
		 * XXX: TODO: this may potentially be slow for large files;
		 * benchmark it and use binary search instead, if necessary.
		 */
		for (i = 0; i < n; i++) {
			SpnValue vexpression = spn_array_get(insns, i);
			SpnHashMap *expression = hashmapvalue(&vexpression);

			SpnValue vline = spn_hashmap_get_strkey(expression, "line");
			SpnValue vcolumn = spn_hashmap_get_strkey(expression, "column");
			SpnValue vbegin = spn_hashmap_get_strkey(expression, "begin");
			SpnValue vend = spn_hashmap_get_strkey(expression, "end");

			unsigned line = intvalue(&vline);
			unsigned column = intvalue(&vcolumn);
			ptrdiff_t begin = intvalue(&vbegin);
			ptrdiff_t end = intvalue(&vend);

			if (begin <= address && address < end
			 && end - begin < address_window_width) {
				/* if the range contains the target address, and it
				 * is narrower than the previous one, then memoize it
				 */
				loc.line = line;
				loc.column = column;

				address_window_width = end - begin;
			}
		}
	}

	return loc;
}
Exemplo n.º 2
0
static void print_array(SpnArray *array, int level)
{
	size_t i;
	size_t n = spn_array_count(array);

	printf("[\n");

	for (i = 0; i < n; i++) {
		SpnValue val = spn_array_get(array, i);

		print_indent(level + 1);
		inner_aux_print(&val, level + 1);
		printf("\n");
	}

	print_indent(level);
	printf("]");
}