Changeset 57055 in webkit for trunk/JavaScriptCore/runtime/UString.cpp

Timestamp:

Apr 3, 2010, 11:53:46 PM (15 years ago)

Author:

[email protected]

Message:

​https://bugs.webkit.org/show_bug.cgi?id=37068
Change UString to use a 0 rep for null strings instead of a null object.

Reviewed by Oliver Hunt.

No performance impact.

• JavaScriptCore.exp:
• runtime/InternalFunction.cpp:

(JSC::InternalFunction::InternalFunction):

• runtime/JSString.h:

(JSC::RopeBuilder::JSString):

• runtime/UString.cpp:

(JSC::initializeUString):

• runtime/UString.h:

(JSC::UString::UString):
(JSC::UString::data):
(JSC::UString::size):
(JSC::UString::isNull):
(JSC::UString::isEmpty):
(JSC::UString::cost):

File:

• trunk/JavaScriptCore/runtime/UString.cpp (modified) (2 diffs)

trunk/JavaScriptCore/runtime/UString.cpp

@@ -59 +59 @@
 
 // The null string is immutable, except for refCount.
-UString::Rep* UString::s_nullRep;
 UString* UString::s_nullUString;
 
@@ -68 +67 @@
     UStringImpl::empty();
 
-    UString::s_nullRep = new UStringImpl(0, 0, UStringImpl::ConstructStaticString);
     UString::s_nullUString = new UString;
 }