Use official V8 string manipulation methods in QML

The QtJSBackend's String::GetCharacter and String::Equals methods are Qt
specific and they are not supported by official V8. These methods can be
replaced by more "V8-friendly" implementations in QtDeclarative. Thus
the mentioned methods can be removed from QtJSBackend to reduce the
difference between QtJSBackend and the official V8 source.

Change-Id: I5590ca62dc667e64a7f54a7e47a02d350ba0c077
Reviewed-by: Lars Knoll <lars.knoll@digia.com>

3 files changed, 16 insertions, 7 deletions

diff --git a/src/qml/qml/ftw/qhashedstring_p.h b/src/qml/qml/ftw/qhashedstring_p.h
index 5fc8443ecd..cdf0717e3a 100644
--- a/src/qml/qml/ftw/qhashedstring_p.h
+++ b/src/qml/qml/ftw/qhashedstring_p.h
@@ -262,8 +262,9 @@ public:
     inline uint16_t *utf16Data() const { return (uint16_t *)strData->data(); }
 
     inline bool equals(v8::Handle<v8::String> string) const {
-        return isQString()?string->Equals(utf16Data(), length):
-                           string->Equals(cStrData(), length);
+        v8::Local<v8::String> data = isQString() ? v8::String::New(utf16Data(), length)
+                                                 : v8::String::New(cStrData(), length);
+        return string->Equals(data);
     }
 
     inline bool symbolEquals(const QHashedV8String &string) const {
@@ -1183,8 +1184,11 @@ QString QHashedV8String::toString() const
     QString result;
     result.reserve(m_hash.length);
 
+    v8::String::Value value(m_string);
+    Q_ASSERT(*value != NULL);
+    uint16_t* string = *value;
     for (int i = 0; i < m_hash.length; ++i)
-        result.append(m_string->GetCharacter(i));
+        result.append(string[i]);
 
     return result;
 }
diff --git a/src/qml/qml/qqmllocale.cpp b/src/qml/qml/qqmllocale.cpp
index e1ac75f5f0..c9ce4773c3 100644
--- a/src/qml/qml/qqmllocale.cpp
+++ b/src/qml/qml/qqmllocale.cpp
@@ -464,8 +464,11 @@ v8::Handle<v8::Value> QQmlNumberExtension::toLocaleString(const v8::Arguments& a
         if (!args[1]->IsString())
             V8THROW_ERROR("Locale: Number.toLocaleString(): Invalid arguments");
         v8::Local<v8::String> fs = args[1]->ToString();
-        if (!fs.IsEmpty() && fs->Length())
-            format = fs->GetCharacter(0);
+        if (!fs.IsEmpty() && fs->Length()) {
+            v8::String::Value value(fs);
+            Q_ASSERT(*value != NULL);
+            format = **value;
+        }
     }
     int prec = 2;
     if (args.Length() > 2) {
diff --git a/src/qml/qml/v8/qv8engine_p.h b/src/qml/qml/v8/qv8engine_p.h
index 090ffaa353..5ae0963178 100644
--- a/src/qml/qml/v8/qv8engine_p.h
+++ b/src/qml/qml/v8/qv8engine_p.h
@@ -629,8 +629,10 @@ v8::Handle<v8::String> QV8Engine::bindingFlagKey() const
 // unqualified name in QV8ContextWrapper.
 bool QV8Engine::startsWithUpper(v8::Handle<v8::String> string)
 {
-    uint16_t c = string->GetCharacter(0);
-    return (c >= 'A' && c <= 'Z') || 
+    v8::String::Value value(string);
+    Q_ASSERT(*value != NULL);
+    uint16_t c = **value;
+    return (c >= 'A' && c <= 'Z') ||
            (c > 127 && QChar::category(c) == QChar::Letter_Uppercase);
 }