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fast object iteration (558754, r=brendan, CLOSED TREE).

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This commit is contained in:
Andreas Gal
2010-05-07 17:52:52 -07:00
parent 3b6a95444b
commit 99a98c4cbf
31 changed files with 965 additions and 1601 deletions
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64
js/src/jsxml.cpp
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@@ -5089,70 +5089,6 @@ js_GetXMLMethod(JSContext *cx, JSObject *obj, jsid id, jsval *vp)
return ok;
}
JSBool
js_EnumerateXMLValues(JSContext *cx, JSObject *obj, JSIterateOp enum_op,
jsval *statep, jsid *idp, jsval *vp)
{
JSXML *xml, *kid;
uint32 length, index;
JSXMLArrayCursor *cursor;
JSObject *kidobj;
JS_ASSERT(JS_InstanceOf(cx, obj, &js_XMLClass, NULL));
xml = (JSXML *) obj->getPrivate();
length = JSXML_LENGTH(xml);
JS_ASSERT(INT_FITS_IN_JSVAL(length));
switch (enum_op) {
case JSENUMERATE_INIT:
if (length == 0) {
*statep = JSVAL_ZERO;
} else {
cursor = cx->create<JSXMLArrayCursor>(&xml->xml_kids);
if (!cursor)
return JS_FALSE;
*statep = PRIVATE_TO_JSVAL(cursor);
}
JS_ASSERT(!idp);
JS_ASSERT(!vp);
break;
case JSENUMERATE_NEXT:
if (*statep == JSVAL_ZERO) {
*statep = JSVAL_NULL;
break;
}
cursor = (JSXMLArrayCursor *) JSVAL_TO_PRIVATE(*statep);
if (cursor && cursor->array && (index = cursor->index) < length) {
while (!(kid = XMLARRAY_MEMBER(&xml->xml_kids, index, JSXML))) {
if (++index == length)
goto destroy;
}
kidobj = js_GetXMLObject(cx, kid);
if (!kidobj)
return JS_FALSE;
JS_ASSERT(INT_FITS_IN_JSVAL(index));
*idp = INT_TO_JSID(index);
*vp = OBJECT_TO_JSVAL(kidobj);
cursor->index = index + 1;
break;
}
/* FALL THROUGH */
case JSENUMERATE_DESTROY:
if (*statep != JSVAL_ZERO) {
cursor = (JSXMLArrayCursor *) JSVAL_TO_PRIVATE(*statep);
if (cursor) {
destroy:
cx->destroy(cursor);
}
}
*statep = JSVAL_NULL;
break;
}
return JS_TRUE;
}
JSBool
js_TestXMLEquality(JSContext *cx, JSObject *obj, jsval v, JSBool *bp)
{