bindings: Add validation for enum Sequence or Array

Source/bindings/core/v8/V8Binding.cpp

 /*
  * Copyright (C) 2006, 2007, 2008, 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:
  *
  *     * 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
@@ skipping 760 matching lines @@
 
 void crashIfV8IsDead()
 {
     if (v8::V8::IsDead()) {
         // FIXME: We temporarily deal with V8 internal error situations
         // such as out-of-memory by crashing the renderer.
         CRASH();
     }
 }
 
+bool isValidEnum(const String value, const char** validValues, size_t length, ExceptionState& exceptionState)
+{
+    for (size_t i = 0; i < length; ++i) {
+        if (value == validValues[i])
+            return true;
+    }
+    exceptionState.throwTypeError("The provided value '" + value + "' is not a valid enum value.");
+    return false;
+}
+
+bool isValidEnum(const Vector<String>& values, const char** validValues, size_t length, ExceptionState& exceptionState)
+{
+    for (auto value : values) {
+        if (!isValidEnum(value, validValues, length, exceptionState))
+            return false;
+    }
+    return true;
+}
+
 v8::Handle<v8::Function> getBoundFunction(v8::Handle<v8::Function> function)
 {
     v8::Handle<v8::Value> boundFunction = function->GetBoundFunction();
     return boundFunction->IsFunction() ? v8::Handle<v8::Function>::Cast(boundFunction) : function;
 }
 
 void addHiddenValueToArray(v8::Isolate* isolate, v8::Handle<v8::Object> object, v8::Local<v8::Value> value, int arrayIndex)
 {
     v8::Local<v8::Value> arrayValue = object->GetInternalField(arrayIndex);
     if (arrayValue->IsNull() || arrayValue->IsUndefined()) {
@@ skipping 157 matching lines @@
     v8::Local<v8::Value> data = info.Data();
     ASSERT(data->IsExternal());
     V8PerContextData* perContextData = V8PerContextData::from(info.Holder()->CreationContext());
     if (!perContextData)
         return;
     v8SetReturnValue(info, perContextData->constructorForType(WrapperTypeInfo::unwrap(data)));
     TRACE_EVENT_SET_SAMPLING_STATE("v8", "V8Execution");
 }
 
 } // namespace blink