Index: third_party/WebKit/Source/platform/text/CompressibleString.h |
diff --git a/third_party/WebKit/Source/platform/text/CompressibleString.h b/third_party/WebKit/Source/platform/text/CompressibleString.h |
new file mode 100644 |
index 0000000000000000000000000000000000000000..15948120ec962a2c9ed35b44e0003b8a946df4a5 |
--- /dev/null |
+++ b/third_party/WebKit/Source/platform/text/CompressibleString.h |
@@ -0,0 +1,86 @@ |
+// Copyright 2016 The Chromium Authors. All rights reserved. |
+// Use of this source code is governed by a BSD-style license that can be |
+// found in the LICENSE file. |
+ |
+#ifndef CompressibleString_h |
+#define CompressibleString_h |
+ |
+#include "platform/PlatformExport.h" |
+#include "wtf/text/Unicode.h" |
+#include "wtf/text/WTFString.h" |
+ |
+namespace blink { |
+ |
+// TODO(hajimehoshi): Now these classes are in platform/text to use UMA. Move |
+// them to wtf/text. |
+ |
+// This method must be called only by Platform::initialize. |
+void initializeCompressibleStringTable(); |
+ |
+class PLATFORM_EXPORT CompressibleStringImpl final : public RefCounted<CompressibleStringImpl> { |
+ WTF_MAKE_NONCOPYABLE(CompressibleStringImpl); |
+public: |
+ static void compressAll(); |
+ static void setPageBackground(bool); |
+ |
+ CompressibleStringImpl(); |
+ CompressibleStringImpl(PassRefPtr<StringImpl>); |
haraken
2016/01/19 07:43:36
Add explicit.
hajimehoshi
2016/01/19 10:19:21
Done.
|
+ ~CompressibleStringImpl(); |
+ |
+ bool isEmpty() const { return originalLength() == 0; } |
+ |
+ bool isCompressed() const { return m_isCompressed; } |
+ unsigned originalLength() const { return m_string.length(); } |
+ bool is8Bit() const { return m_string.is8Bit(); } |
+ |
+ unsigned originalContentSizeInBytes() const; |
+ unsigned currentSizeInBytes() const; |
+ |
+ const String& toString(); |
+ const LChar* characters8(); |
+ const UChar* characters16(); |
+ |
+ void compressString(); |
+ void decompressString(); |
+ |
+private: |
+ static bool s_isPageBackground; |
+ |
+ String m_string; |
+ bool m_isCompressed; |
+}; |
+ |
+class PLATFORM_EXPORT CompressibleString final { |
+public: |
+ CompressibleString(); |
+ CompressibleString(const CompressibleString&); |
+ explicit CompressibleString(PassRefPtr<StringImpl>); |
+ |
+ bool isNull() const { return !m_impl; } |
+ bool isEmpty() const { return isNull() || m_impl->isEmpty(); } |
+ unsigned length() const { return m_impl ? m_impl->originalLength() : 0; } |
+ |
+ unsigned currentSizeInBytes() const { return m_impl ? m_impl->currentSizeInBytes() : 0; } |
+ |
+ bool isCompressed() const { return m_impl ? m_impl->isCompressed() : false; } |
+ bool is8Bit() const { return m_impl ? m_impl->is8Bit() : false; } |
+ |
+ const String& toString() const { return m_impl ? m_impl->toString() : emptyString(); } |
+ const LChar* characters8() const { return m_impl ? m_impl->characters8() : nullptr; } |
+ const UChar* characters16() const { return m_impl ? m_impl->characters16() : nullptr; } |
+ |
+ PassRefPtr<CompressibleStringImpl> impl() const { return m_impl; } |
haraken
2016/01/19 07:43:35
This is a getter for impl, so it should return Com
hajimehoshi
2016/01/19 10:19:21
Done.
|
+ |
+private: |
+ void compressString() const; |
+ void decompressString() const; |
+ |
+ mutable RefPtr<CompressibleStringImpl> m_impl; |
+}; |
+ |
+} // namespace blink |
+ |
+using blink::CompressibleString; |
+using blink::CompressibleStringImpl; |
+ |
+#endif |