WIP: Introduce CompressibleString

third_party/WebKit/Source/bindings/core/v8/V8StringResource.h

 /*
  * Copyright (C) 2009 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 13 matching lines @@
  */
 
 #ifndef V8StringResource_h
 #define V8StringResource_h
 
 #include "bindings/core/v8/ExceptionState.h"
 #include "core/CoreExport.h"
 #include "wtf/Allocator.h"
 #include "wtf/Threading.h"
 #include "wtf/text/AtomicString.h"
+#include "wtf/text/CompressableString.h"
 #include <v8.h>
 
 namespace blink {
 
 // WebCoreStringResource is a helper class for v8ExternalString. It is used
 // to manage the life-cycle of the underlying buffer of the external string.
 class WebCoreStringResourceBase {
     WTF_MAKE_FAST_ALLOCATED(WebCoreStringResourceBase);
     WTF_MAKE_NONCOPYABLE(WebCoreStringResourceBase);
 public:
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         ASSERT(string.is8Bit());
     }
 
     size_t length() const override { return m_plainString.impl()->length(); }
     const char* data() const override
     {
         return reinterpret_cast<const char*>(m_plainString.impl()->characters8());
     }
 };
 
+class WebCoreCompressableStringResource16 final : public v8::String::ExternalStringResource {
+    WTF_MAKE_NONCOPYABLE(WebCoreCompressableStringResource16);
+public:
+    explicit WebCoreCompressableStringResource16(RefPtrWillBeRawPtr<CompressableString> string)
+        : m_string(string)
+    {
+        ASSERT(m_string);
+        ASSERT(!m_string->is8Bit());
+    }
+
+    size_t length() const override
+    {
+        return m_string->length();
+    }
+
+    const uint16_t* data() const override
+    {
+        return reinterpret_cast<const uint16_t*>(m_string->toString().characters16());
+    }
+
+private:
+    RefPtrWillBeMember<CompressableString> m_string;
+};
+
+class WebCoreCompressableStringResource8 final : public v8::String::ExternalOneByteStringResource {
+    WTF_MAKE_NONCOPYABLE(WebCoreCompressableStringResource8);
+public:
+    explicit WebCoreCompressableStringResource8(RefPtrWillBeRawPtr<CompressableString> string)
+        : m_string(string)
+    {
+        ASSERT(m_string);
+        ASSERT(m_string->is8Bit());
+    }
+
+    size_t length() const override
+    {
+        return m_string->length();
+    }
+
+    const char* data() const override
+    {
+        return reinterpret_cast<const char*>(m_string->toString().characters8());
+    }
+
+private:
+    RefPtrWillBeMember<CompressableString> m_string;
+};
+
 enum ExternalMode {
     Externalize,
     DoNotExternalize
 };
 
 template <typename StringType>
 CORE_EXPORT StringType v8StringToWebCoreString(v8::Local<v8::String>, ExternalMode);
 CORE_EXPORT String int32ToWebCoreString(int value);
 
 // V8StringResource is an adapter class that converts V8 values to Strings
@@ skipping 154 matching lines @@
 }
 
 template<> inline String V8StringResource<TreatNullAndUndefinedAsNullString>::fallbackString() const
 {
     return String();
 }
 
 } // namespace blink
 
 #endif // V8StringResource_h