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String * number should be commutative

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Nicolas Williams committed 2014-06-07 21:43:30 -05:00
1 parent 8212750fe9
commit 6856ab8a69
1 file changed
+18 -8
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builtin.c
+18 -8
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@@ -156,23 +156,33 @@ static jv f_minus(jv input, jv a, jv b) {
}
static jv f_multiply(jv input, jv a, jv b) {
jv_kind ak = jv_get_kind(a);
jv_kind bk = jv_get_kind(b);
jv_free(input);
if (jv_get_kind(a) == JV_KIND_NUMBER && jv_get_kind(b) == JV_KIND_NUMBER) {
if (ak == JV_KIND_NUMBER && bk == JV_KIND_NUMBER) {
return jv_number(jv_number_value(a) * jv_number_value(b));
} else if (jv_get_kind(a) == JV_KIND_STRING && jv_get_kind(b) == JV_KIND_NUMBER) {
} else if ((ak == JV_KIND_STRING && bk == JV_KIND_NUMBER) ||
(ak == JV_KIND_NUMBER && bk == JV_KIND_STRING)) {
jv str = a;
jv num = b;
if (ak == JV_KIND_NUMBER) {
str = b;
num = a;
}
int n;
size_t alen = jv_string_length_bytes(jv_copy(a));
jv res = a;
size_t alen = jv_string_length_bytes(jv_copy(str));
jv res = str;
for (n = jv_number_value(b) - 1; n > 0; n--)
res = jv_string_append_buf(res, jv_string_value(a), alen);
for (n = jv_number_value(num) - 1; n > 0; n--)
res = jv_string_append_buf(res, jv_string_value(str), alen);
jv_free(num);
if (n < 0) {
jv_free(a);
jv_free(str);
return jv_null();
}
return res;
} else if (jv_get_kind(a) == JV_KIND_OBJECT && jv_get_kind(b) == JV_KIND_OBJECT) {
} else if (ak == JV_KIND_OBJECT && bk == JV_KIND_OBJECT) {
return jv_object_merge_recursive(a, b);
} else {
return type_error2(a, b, "cannot be multiplied");