Roll V8 back to 3.6
Roll back to V8 3.6 to fix x86 build, we don't have ucontext.h.
This reverts commits:
5d4cdbf7a67d3662fa0bee4efdb7edd8daec9b0b
c7cc028aaeedbbfa11c11d0b7b243b3d9e837ed9
592a9fc1d8ea420377a2e7efd0600e20b058be2b
Bug: 5688872
Change-Id: Ic961bb5e65b778e98bbfb71cce71d99fa949e995
diff --git a/src/extensions/experimental/language-matcher.h b/src/extensions/experimental/language-matcher.h
new file mode 100644
index 0000000..dd29304
--- /dev/null
+++ b/src/extensions/experimental/language-matcher.h
@@ -0,0 +1,95 @@
+// Copyright 2011 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.
+
+#ifndef V8_EXTENSIONS_EXPERIMENTAL_LANGUAGE_MATCHER_H_
+#define V8_EXTENSIONS_EXPERIMENTAL_LANGUAGE_MATCHER_H_
+
+#include "include/v8.h"
+
+#include "unicode/uloc.h"
+
+namespace v8 {
+namespace internal {
+
+struct LocaleIDMatch {
+ LocaleIDMatch();
+
+ LocaleIDMatch& operator=(const LocaleIDMatch& rhs);
+
+ // Bcp47 locale id - "de-Latn-DE-u-co-phonebk".
+ char bcp47_id[ULOC_FULLNAME_CAPACITY];
+
+ // ICU locale id - "de_Latn_DE@collation=phonebk".
+ char icu_id[ULOC_FULLNAME_CAPACITY];
+
+ // Score for this locale.
+ int score;
+};
+
+class LanguageMatcher {
+ public:
+ // Default locale.
+ static const char* const kDefaultLocale;
+
+ // Finds best supported locale for a given a list of locale identifiers.
+ // It preserves the extension for the locale id.
+ static void GetBestMatchForPriorityList(
+ v8::Handle<v8::Array> locale_list, LocaleIDMatch* result);
+
+ // Finds best supported locale for a single locale identifier.
+ // It preserves the extension for the locale id.
+ static void GetBestMatchForString(
+ v8::Handle<v8::String> locale_id, LocaleIDMatch* result);
+
+ private:
+ // If langauge subtags match add this amount to the score.
+ static const unsigned int kLanguageWeight;
+
+ // If script subtags match add this amount to the score.
+ static const unsigned int kScriptWeight;
+
+ // If region subtags match add this amount to the score.
+ static const unsigned int kRegionWeight;
+
+ // LocaleID match score has to be over this number to accept the match.
+ static const unsigned int kThreshold;
+
+ // For breaking ties in priority queue.
+ static const unsigned int kPositionBonus;
+
+ LanguageMatcher();
+
+ // Compares locale_id to the supported list of locales and returns best
+ // match.
+ // Returns false if it fails to convert locale id from ICU to BCP47 format.
+ static bool CompareToSupportedLocaleIDList(v8::Handle<v8::String> locale_id,
+ LocaleIDMatch* result);
+};
+
+} } // namespace v8::internal
+
+#endif // V8_EXTENSIONS_EXPERIMENTAL_LANGUAGE_MATCHER_H_