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Optimize range check.

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This commit is contained in:
Masaki Muranaka
2012-07-07 16:30:52 +09:00
parent 8268ba2755
commit 312b2c7b16
1 changed files with 8 additions and 4 deletions
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src/array.c
+8 -4
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@@ -566,9 +566,11 @@ mrb_ary_set(mrb_state *mrb, mrb_value ary, mrb_int n, mrb_value val) /* rb_ary_s
ary_modify(mrb, a);
/* range check */
if (n < 0) n += a->len;
if (n < 0) {
mrb_raise(mrb, E_INDEX_ERROR, "index %ld out of array", n - a->len);
n += a->len;
if (n < 0) {
mrb_raise(mrb, E_INDEX_ERROR, "index %ld out of array", n - a->len);
}
}
if (a->len <= (int)n) {
if (a->aux.capa <= (int)n)
@@ -592,9 +594,11 @@ mrb_ary_splice(mrb_state *mrb, mrb_value ary, mrb_int head, mrb_int len, mrb_val
ary_modify(mrb, a);
/* range check */
if (head < 0) head += a->len;
if (head < 0) {
mrb_raise(mrb, E_INDEX_ERROR, "index is out of array");
head += a->len;
if (head < 0) {
mrb_raise(mrb, E_INDEX_ERROR, "index is out of array");
}
}
tail = head + len;