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Clarify SimpleXML comparison logic

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This commit is contained in:
Nikita Popov 2020-03-31 12:48:57 +02:00
parent fb5bfcb75b
commit 6bf483a94a
1 changed files with 15 additions and 7 deletions
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22
ext/simplexml/simplexml.c
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@ -1291,16 +1291,24 @@ static int sxe_objects_compare(zval *object1, zval *object2) /* {{{ */
sxe1 = Z_SXEOBJ_P(object1);
sxe2 = Z_SXEOBJ_P(object2);
if (sxe1->node == NULL) {
if (sxe2->node) {
return 1;
} else if (sxe1->document->ptr == sxe2->document->ptr) {
if (sxe1->node != NULL && sxe2->node != NULL) {
/* Both nodes set: Only support equality comparison between nodes. */
if (sxe1->node == sxe2->node) {
return 0;
}
return 1;
} else {
return !(sxe1->node == sxe2->node);
return ZEND_UNCOMPARABLE;
}
if (sxe1->node == NULL && sxe2->node == NULL) {
/* Both nodes not set: Only support equality comparison between documents. */
if (sxe1->document->ptr == sxe2->document->ptr) {
return 0;
}
return ZEND_UNCOMPARABLE;
}
/* Only one of the nodes set: Cannot compare. */
return ZEND_UNCOMPARABLE;
}
/* }}} */