Changeset 40438

2009-01-30 Darin Adler < darin@apple.com>

Reviewed by Mark Rowe.

Bug 23622: create CFString and NSString objects from WebCore::String without copying the characters
 https://bugs.webkit.org/show_bug.cgi?id=23622

• platform/text/cf/StringImplCF.cpp: (WebCore::StringWrapperCFAllocator::allocator): Added. Returns the allocator. (WebCore::StringWrapperCFAllocator::retain): Added. Callback for allocator. (WebCore::StringWrapperCFAllocator::release): Ditto. (WebCore::StringWrapperCFAllocator::copyDescription): Ditto. (WebCore::StringWrapperCFAllocator::allocate): Ditto. (WebCore::StringWrapperCFAllocator::reallocate): Ditto. (WebCore::StringWrapperCFAllocator::deallocate): Ditto. (WebCore::StringWrapperCFAllocator::preferredSize): Ditto. (WebCore::StringWrapperCFAllocator::create): Added. Creates the allocator, but returns 0 if garbage collection is enabled. (WebCore::StringImpl::createCFString): Use StringWrapperCFAllocator if possible.

• platform/text/mac/StringImplMac.mm: (WebCore::StringImpl::operator NSString *): Use CFString and toll-free bridging, rather than using NSString directly. This lets NSString benefit from the above.