Import the v8-i18n extension into v8

src/extensions/i18n/collator.h

 // Copyright 2013 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
 //       with the distribution.
 //     * Neither the name of Google Inc. nor the names of its
 //       contributors may be used to endorse or promote products derived
 //       from this software without specific prior written permission.
 //
 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+// limitations under the License.
 
-#ifndef V8_HYDROGEN_INFER_REPRESENTATION_H_
-#define V8_HYDROGEN_INFER_REPRESENTATION_H_
+#ifndef V8_EXTENSIONS_I18N_COLLATOR_H_
+#define V8_EXTENSIONS_I18N_COLLATOR_H_
 
-#include "hydrogen.h"
+#include "unicode/uversion.h"
+#include "v8.h"
 
-namespace v8 {
-namespace internal {
+namespace U_ICU_NAMESPACE {
+class Collator;
+class UnicodeString;
+}
 
+namespace v8_i18n {
 
-class HInferRepresentationPhase : public HPhase {
+class Collator {
  public:
-  explicit HInferRepresentationPhase(HGraph* graph)
-      : HPhase("H_Infer representations", graph),
-        worklist_(8, zone()),
-        in_worklist_(graph->GetMaximumValueID(), zone()) { }
+  static void JSCreateCollator(const v8::FunctionCallbackInfo<v8::Value>& args);
 
-  void Run();
-  void AddToWorklist(HValue* current);
+  // Helper methods for various bindings.
+
+  // Unpacks collator object from corresponding JavaScript object.
+  static icu::Collator* UnpackCollator(v8::Handle<v8::Object> obj);
+
+  // Release memory we allocated for the Collator once the JS object that
+  // holds the pointer gets garbage collected.
+  static void DeleteCollator(v8::Isolate* isolate,
+                             v8::Persistent<v8::Object>* object,
+                             void* param);
+
+  // Compare two strings and returns -1, 0 and 1 depending on
+  // whether string1 is smaller than, equal to or larger than string2.
+  static void JSInternalCompare(
+      const v8::FunctionCallbackInfo<v8::Value>& args);
 
  private:
-  ZoneList<HValue*> worklist_;
-  BitVector in_worklist_;
-
-  DISALLOW_COPY_AND_ASSIGN(HInferRepresentationPhase);
+  Collator() {}
 };
 
+}  // namespace v8_i18n
 
-} }  // namespace v8::internal
-
-#endif  // V8_HYDROGEN_INFER_REPRESENTATION_H_
+#endif  // V8_EXTENSIONS_I18N_COLLATOR_H_