Changeset 43104 in webkit for trunk/JavaScriptCore/runtime/UString.h

Timestamp:

Apr 30, 2009, 4:36:38 PM (16 years ago)

Author:

[email protected]

Message:

2009-04-30 Maciej Stachowiak <​[email protected]>

Reviewed by Gavin Barraclough.

• Concatenate final three strings in simple replace case at one go

~0.2% SunSpider speedup

• runtime/StringPrototype.cpp: (JSC::stringProtoFuncReplace): Use new replaceRange helper instead of taking substrings and concatenating three strings.
• runtime/UString.cpp: (JSC::UString::replaceRange): New helper function.
• runtime/UString.h:

File:

• trunk/JavaScriptCore/runtime/UString.h (modified) (1 diff)

trunk/JavaScriptCore/runtime/UString.h

@@ -245 +245 @@
         UString spliceSubstringsWithSeparators(const Range* substringRanges, int rangeCount, const UString* separators, int separatorCount) const;
 
+        UString replaceRange(int rangeStart, int RangeEnd, const UString& replacement) const;
+
         UString& append(const UString&);
         UString& append(const char*);