Initial implementation of bindings and basic classes for worklets.

third_party/WebKit/Source/bindings/modules/v8/V8BindingForModules.cpp

 /*
  * Copyright (C) 2011 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
  *     documentation and/or other materials provided with the distribution.
  *
  * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS 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 APPLE OR ITS 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.
  */
 
 #include "bindings/modules/v8/V8BindingForModules.h"
 
+#include "bindings/core/v8/IsolatedScriptController.h"
 #include "bindings/core/v8/SerializedScriptValue.h"
 #include "bindings/core/v8/SerializedScriptValueFactory.h"
 #include "bindings/core/v8/V8ArrayBuffer.h"
 #include "bindings/core/v8/V8ArrayBufferView.h"
 #include "bindings/core/v8/V8Binding.h"
 #include "bindings/core/v8/V8Blob.h"
 #include "bindings/core/v8/V8DOMStringList.h"
 #include "bindings/core/v8/V8File.h"
 #include "bindings/core/v8/V8Uint8Array.h"
 #include "bindings/modules/v8/ToV8ForModules.h"
 #include "bindings/modules/v8/V8IDBCursor.h"
 #include "bindings/modules/v8/V8IDBCursorWithValue.h"
 #include "bindings/modules/v8/V8IDBDatabase.h"
 #include "bindings/modules/v8/V8IDBIndex.h"
 #include "bindings/modules/v8/V8IDBKeyRange.h"
 #include "bindings/modules/v8/V8IDBObjectStore.h"
+#include "bindings/modules/v8/V8WorkletGlobalScope.h"
 #include "core/dom/DOMArrayBuffer.h"
 #include "core/dom/DOMArrayBufferView.h"
+#include "core/dom/ExecutionContext.h"
 #include "modules/indexeddb/IDBKey.h"
 #include "modules/indexeddb/IDBKeyPath.h"
 #include "modules/indexeddb/IDBKeyRange.h"
 #include "modules/indexeddb/IDBTracing.h"
 #include "modules/indexeddb/IDBValue.h"
+#include "modules/worklet/WorkletGlobalScope.h"
 #include "platform/RuntimeEnabledFeatures.h"
 #include "platform/SharedBuffer.h"
 #include "wtf/MathExtras.h"
 #include "wtf/Vector.h"
 
 namespace blink {
 
 static v8::Local<v8::Value> deserializeIDBValueData(v8::Isolate*, const IDBValue*);
 static v8::Local<v8::Value> deserializeIDBValue(v8::Isolate*, v8::Local<v8::Object> creationContext, const IDBValue*);
 static v8::Local<v8::Value> deserializeIDBValueArray(v8::Isolate*, v8::Local<v8::Object> creationContext, const Vector<RefPtr<IDBValue>>*);
@@ skipping 91 matching lines @@
     case IDBAny::IntegerType:
         return v8::Number::New(isolate, impl->integer());
     case IDBAny::KeyType:
         return toV8(impl->key(), creationContext, isolate);
     }
 
     ASSERT_NOT_REACHED();
     return v8::Undefined(isolate);
 }
 
+v8::Local<v8::Value> toV8(WorkletGlobalScope* impl, v8::Local<v8::Object> creationContext, v8::Isolate* isolate)
+{
+    // Notice that we explicitly ignore creationContext because the
+    // WorkletGlobalScope has its own creationContext.
+
+    if (UNLIKELY(!impl))
+        return v8::Null(isolate);
+
+    IsolatedScriptController* script = impl->script();
+    if (!script)
+        return v8::Null(isolate);
+
+    v8::Local<v8::Object> global = script->context()->Global();
+    ASSERT(!global.IsEmpty());
+    return global;
+}
+
 static const size_t maximumDepth = 2000;
 
 static IDBKey* createIDBKeyFromValue(v8::Isolate* isolate, v8::Local<v8::Value> value, Vector<v8::Local<v8::Array>>& stack, ExceptionState& exceptionState, bool allowExperimentalTypes = false)
 {
     if (value->IsNumber() && !std::isnan(value.As<v8::Number>()->Value()))
         return IDBKey::createNumber(value.As<v8::Number>()->Value());
     if (value->IsString())
         return IDBKey::createString(toCoreString(value.As<v8::String>()));
     if (value->IsDate() && !std::isnan(value.As<v8::Date>()->ValueOf()))
         return IDBKey::createDate(value.As<v8::Date>()->ValueOf());
@@ skipping 337 matching lines @@
     IDBKey* expectedKey = createIDBKeyFromValueAndKeyPath(isolate, scriptValue.v8Value(), value->keyPath(), exceptionState, allowExperimentalTypes);
     ASSERT(!exceptionState.hadException());
     if (expectedKey && expectedKey->isEqual(value->primaryKey()))
         return;
 
     bool injected = injectV8KeyIntoV8Value(isolate, keyValue.v8Value(), scriptValue.v8Value(), value->keyPath());
     ASSERT_UNUSED(injected, injected);
 }
 #endif
 
+ExecutionContext* toExecutionContextForModules(v8::Local<v8::Context> context)
+{
+    if (context.IsEmpty())
+        return 0;

[haraken, 2016/01/05 06:08:06]

nullptr

[ikilpatrick, 2016/01/07 22:47:35]

Done.

+    v8::Local<v8::Object> global = context->Global();
+    v8::Local<v8::Object> workletWrapper = V8WorkletGlobalScope::findInstanceInPrototypeChain(global, context->GetIsolate());
+    if (!workletWrapper.IsEmpty())
+        return V8WorkletGlobalScope::toImpl(workletWrapper);
+    // FIXME: Is this line of code reachable?
+    return 0;

[haraken, 2016/01/05 06:08:06]

nullptr

[ikilpatrick, 2016/01/07 22:47:35]

Done.

+}
+
+v8::Local<v8::Context> toV8ContextForModules(ExecutionContext* context)
+{
+    if (context->isWorkletGlobalScope()) {
+        if (IsolatedScriptController* script = toWorkletGlobalScope(context)->script()) {
+            if (script->scriptState()->contextIsValid())
+                return script->scriptState()->context();
+        }
+    }
+    return v8::Local<v8::Context>();
+}
+
 } // namespace blink