Changeset 154113 in webkit for trunk/Source/JavaScriptCore/runtime/JSString.h

Timestamp:

Aug 15, 2013, 11:49:05 AM (12 years ago)

Author:

[email protected]

Message:

​https://bugs.webkit.org/show_bug.cgi?id=119843
PropertySlot::setValue is ambiguous

Reviewed by Geoff Garen.

There are three different versions of PropertySlot::setValue, one for cacheable properties, and two that are used interchangeably and inconsistently.
The problematic variants are the ones that just take a value, and one that takes a value and also the object containing the property.
Unify on always providing the object, and remove the version that just takes a value.
This always works except for JSString, where we optimize out the object (logically we should be instantiating a temporary StringObject on every property access).
Provide a version of setValue that takes a JSString as the owner of the property.
We won't store this, but it makes it clear that this interface should only be used from JSString.

• API/JSCallbackObjectFunctions.h:

(JSC::::getOwnPropertySlot):

• JSCTypedArrayStubs.h:
• runtime/Arguments.cpp:

(JSC::Arguments::getOwnPropertySlotByIndex):
(JSC::Arguments::getOwnPropertySlot):

• runtime/JSActivation.cpp:

(JSC::JSActivation::symbolTableGet):
(JSC::JSActivation::getOwnPropertySlot):

• runtime/JSArray.cpp:

(JSC::JSArray::getOwnPropertySlot):

• runtime/JSObject.cpp:

(JSC::JSObject::getOwnPropertySlotByIndex):

• runtime/JSString.h:

(JSC::JSString::getStringPropertySlot):

• runtime/JSSymbolTableObject.h:

(JSC::symbolTableGet):

• runtime/SparseArrayValueMap.cpp:

(JSC::SparseArrayEntry::get):

• Pass object containing property to PropertySlot::setValue

• runtime/PropertySlot.h:

(JSC::PropertySlot::setValue):

• Logically, the base of a string property access is a temporary StringObject, but we optimize that away.

(JSC::PropertySlot::setUndefined):

• removed setValue(JSValue), added setValue(JSString*, JSValue)

File:

• trunk/Source/JavaScriptCore/runtime/JSString.h (modified) (3 diffs)

trunk/Source/JavaScriptCore/runtime/JSString.h

@@ -474 +474 @@
     {
         if (propertyName == exec->propertyNames().length) {
-            slot.setValue(jsNumber(m_length));
+            slot.setValue(this, jsNumber(m_length));
             return true;
         }
@@ -481 +481 @@
         if (i < m_length) {
             ASSERT(i != PropertyName::NotAnIndex); // No need for an explicit check, the above test would always fail!
-            slot.setValue(getIndex(exec, i));
+            slot.setValue(this, getIndex(exec, i));
             return true;
         }
@@ -491 +491 @@
     {
         if (propertyName < m_length) {
-            slot.setValue(getIndex(exec, propertyName));
+            slot.setValue(this, getIndex(exec, propertyName));
             return true;
         }