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Auto merge of #13017 - nox:wrong-receiver, r=Ms2ger

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Pass the receiver to get_property_on_prototype (fixes #11600)

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This commit is contained in:
bors-servo 2016-08-25 11:49:54 -05:00 • committed by GitHub
commit 160d15670e
3 changed files with 60 additions and 48 deletions
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37
components/script/dom/bindings/codegen/CodegenRust.py
View file

@ -4724,10 +4724,17 @@ class CGDOMJSProxyHandler_getOwnPropertyDescriptor(CGAbstractExternMethod):
# Once we start supporting OverrideBuiltins we need to make
# ResolveOwnProperty or EnumerateOwnProperties filter out named
# properties that shadow prototype properties.
namedGet = ("\n" +
"if RUST_JSID_IS_STRING(id) && !has_property_on_prototype(cx, proxy, id) {\n" +
CGIndenter(CGProxyNamedGetter(self.descriptor, templateValues)).define() + "\n" +
"}\n")
namedGet = """
if RUST_JSID_IS_STRING(id) {
let mut has_on_proto = false;
if !has_property_on_prototype(cx, proxy, id, &mut has_on_proto) {
return false;
}
if !has_on_proto {
%s
}
}
""" % CGIndenter(CGProxyNamedGetter(self.descriptor, templateValues), 8).define()
else:
namedGet = ""
@ -4952,12 +4959,20 @@ class CGDOMJSProxyHandler_hasOwn(CGAbstractExternMethod):
namedGetter = self.descriptor.operations['NamedGetter']
if namedGetter:
named = ("if RUST_JSID_IS_STRING(id) && !has_property_on_prototype(cx, proxy, id) {\n" +
CGIndenter(CGProxyNamedGetter(self.descriptor)).define() + "\n" +
" *bp = found;\n"
" return true;\n"
"}\n" +
"\n")
named = """\
if RUST_JSID_IS_STRING(id) {
let mut has_on_proto = false;
if !has_property_on_prototype(cx, proxy, id, &mut has_on_proto) {
return false;
}
if !has_on_proto {
%s
*bp = found;
return true;
}
}
""" % CGIndenter(CGProxyNamedGetter(self.descriptor), 8).define()
else:
named = ""
@ -5035,7 +5050,7 @@ if !expando.is_null() {
%s
let mut found = false;
if !get_property_on_prototype(cx, proxy, id, &mut found, vp) {
if !get_property_on_prototype(cx, proxy, receiver, id, &mut found, vp) {
return false;
}

66
components/script/dom/bindings/utils.rs
View file

@ -29,7 +29,7 @@ use js::jsapi::{JS_GetProperty, JS_GetPrototype, JS_GetReservedSlot, JS_HasPrope
use js::jsapi::{JS_HasPropertyById, JS_IsExceptionPending, JS_IsGlobalObject};
use js::jsapi::{JS_ResolveStandardClass, JS_SetProperty, ToWindowProxyIfWindow};
use js::jsapi::{JS_StringHasLatin1Chars, MutableHandleValue, ObjectOpResult};
use js::jsval::{JSVal, ObjectValue, UndefinedValue};
use js::jsval::{JSVal, UndefinedValue};
use js::rust::{GCMethods, ToString};
use libc;
use std::ffi::CString;
@ -127,32 +127,29 @@ pub type ProtoOrIfaceArray = [*mut JSObject; PROTO_OR_IFACE_LENGTH];
/// set to true and `*vp` to the value, otherwise `*found` is set to false.
///
/// Returns false on JSAPI failure.
pub fn get_property_on_prototype(cx: *mut JSContext,
proxy: HandleObject,
id: HandleId,
found: *mut bool,
vp: MutableHandleValue)
-> bool {
unsafe {
// let proto = GetObjectProto(proxy);
rooted!(in(cx) let mut proto = ptr::null_mut());
if !JS_GetPrototype(cx, proxy, proto.handle_mut()) || proto.is_null() {
*found = false;
return true;
}
let mut has_property = false;
if !JS_HasPropertyById(cx, proto.handle(), id, &mut has_property) {
return false;
}
*found = has_property;
let no_output = vp.ptr.is_null();
if !has_property || no_output {
return true;
}
rooted!(in(cx) let receiver = ObjectValue(&*proxy.get()));
JS_ForwardGetPropertyTo(cx, proto.handle(), id, receiver.handle(), vp)
pub unsafe fn get_property_on_prototype(cx: *mut JSContext,
proxy: HandleObject,
receiver: HandleValue,
id: HandleId,
found: *mut bool,
vp: MutableHandleValue)
-> bool {
rooted!(in(cx) let mut proto = ptr::null_mut());
if !JS_GetPrototype(cx, proxy, proto.handle_mut()) || proto.is_null() {
*found = false;
return true;
}
let mut has_property = false;
if !JS_HasPropertyById(cx, proto.handle(), id, &mut has_property) {
return false;
}
*found = has_property;
let no_output = vp.ptr.is_null();
if !has_property || no_output {
return true;
}
JS_ForwardGetPropertyTo(cx, proto.handle(), id, receiver, vp)
}
/// Get an array index from the given `jsid`. Returns `None` if the given
@ -285,12 +282,17 @@ pub fn set_dictionary_property(cx: *mut JSContext,
}
/// Returns whether `proxy` has a property `id` on its prototype.
pub fn has_property_on_prototype(cx: *mut JSContext, proxy: HandleObject, id: HandleId) -> bool {
// MOZ_ASSERT(js::IsProxy(proxy) && js::GetProxyHandler(proxy) == handler);
let mut found = false;
!get_property_on_prototype(cx, proxy, id, &mut found, unsafe {
MutableHandleValue::from_marked_location(ptr::null_mut())
}) || found
pub unsafe fn has_property_on_prototype(cx: *mut JSContext,
proxy: HandleObject,
id: HandleId,
found: &mut bool)
-> bool {
rooted!(in(cx) let mut proto = ptr::null_mut());
if !JS_GetPrototype(cx, proxy, proto.handle_mut()) {
return false;
}
assert!(!proto.is_null());
JS_HasPropertyById(cx, proto.handle(), id, found)
}
/// Drop the resources held by reserved slots of a global object