Added Dartium changes onto 45.0.2454.104

Source/bindings/core/dart/DartNativeUtilities.cpp

+// Copyright 2012, 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
+// 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.
+
+#include "config.h"
+#include "bindings/core/dart/DartNativeUtilities.h"
+
+#include "bindings/core/dart/DartController.h"
+#include "bindings/core/dart/DartDOMData.h"
+#include "bindings/core/dart/DartDOMWrapper.h"
+#include "bindings/core/dart/DartJsInterop.h"
+#include "bindings/core/dart/DartUtilities.h"
+#include "bindings/core/dart/V8Converter.h"
+#include "bindings/core/v8/ScriptController.h"
+#include "bindings/core/v8/V8Document.h"
+#include "bindings/core/v8/npruntime_impl.h"
+#include "core/dom/Document.h"
+#include "core/dom/ExecutionContext.h"
+#include "core/dom/ExecutionContextTask.h"
+#include "core/dom/custom/CustomElementProcessingStack.h"
+#include "core/dom/custom/CustomElementRegistrationContext.h"
+#include "core/frame/LocalFrame.h"
+#include "core/html/HTMLElement.h"
+#include "platform/RuntimeEnabledFeatures.h"
+
+#include "wtf/HashMap.h"
+#include "wtf/StdLibExtras.h"
+#include "wtf/text/CString.h"
+#include "wtf/text/StringHash.h"
+#include <bindings/npruntime.h>
+#include <dart_api.h>
+
+namespace blink {
+
+namespace DartNativeUtilitiesInternal {
+
+/**
+ * Gadget for testing.
+ *
+ * With DART_FORWARDING_PRINT environment variable set, it invokes dartPrint
+ * JavaScript function on global object to communicate to Dart test framework.
+ */
+static void forwardingPrint(Dart_NativeArguments args)
+{
+    v8::Isolate* v8Isolate = v8::Isolate::GetCurrent();
+    v8::HandleScope v8Scope(v8Isolate);
+    ExecutionContext* scriptExecutionContext = DartUtilities::scriptExecutionContext();
+    ASSERT(scriptExecutionContext);
+
+    DartController* dartController = DartController::retrieve(scriptExecutionContext);
+    if (!dartController)
+        return;
+    LocalFrame* frame = dartController->frame();
+    v8::Handle<v8::Context> v8Context = toV8Context(frame, DOMWrapperWorld::mainWorld());
+    v8::Context::Scope scope(v8Context);
+    v8::TryCatch tryCatch;
+
+    v8::Handle<v8::Value> function = v8Context->Global()->Get(v8::String::NewFromUtf8(v8Isolate, "dartPrint"));
+    if (function.IsEmpty() || !function->IsFunction())
+        return;
+
+    v8::Handle<v8::Value> message = V8Converter::stringToV8(Dart_GetNativeArgument(args, 0));
+    function.As<v8::Function>()->Call(v8Context->Global(), 1, &message);
+}
+
+static void getNewIsolateId(Dart_NativeArguments args)
+{
+    static int isolateId = 0;
+    Dart_SetReturnValue(args, DartUtilities::intToDart(isolateId++));
+}
+
+// Use the first argument of a function as the receiver (this) of the native
+// C++ implementation of a few special DOM calls (createElement, registerElement,
+// etc.).
+Document * getBlinkJsoAsDocument(Dart_NativeArguments args, DartDOMData* domData)
+{
+    Dart_Handle exception = 0;
+    {
+        v8::Local<v8::Value> value = JsInterop::fromDart(domData, Dart_GetNativeArgument(args, 0), exception);
+        if (exception)
+            goto fail;
+
+        ASSERT(value->IsObject());
+
+        v8::Handle<v8::Object> object = value.As<v8::Object>();
+        v8::Isolate* isolate = object->CreationContext()->GetIsolate();
+        if (V8Document::hasInstance(object, isolate)) {
+            // FIXME(jacobr): there has to be a faster way to perform this check.
+            if (!object->CreationContext()->Global()->StrictEquals(DartUtilities::currentV8Context()->Global())) {
+                // The object is from a different context so do not convert.
+                return 0;
+            }
+
+            // TODO(terry): Should probably check that this really is a Document.
+            Document* doc = V8Document::toImpl(object);
+            return doc;
+        }
+    }
+
+fail:
+    Dart_ThrowException(exception);
+    return 0;
+}
+
+// dart:html (Dartium only) hookups up the Custom element using JsInterop when
+// JS createCallback is invoked this function is called to allocate the custom
+// Dart class (user's class) setup the blink_jsObject to point to the JS custom
+// element just created and call the custom Dart class created constructor.
+void customConstructorCreate(Dart_NativeArguments args)
+{
+    Dart_Handle exception = 0;
+    {
+        DartDOMData* domData = DartDOMData::current();
+
+        Dart_Handle dartElementType = Dart_GetNativeArgument(args, 0);
+        ASSERT(Dart_IsType(dartElementType));
+
+        Dart_Handle blinkJsObject = Dart_GetNativeArgument(args, 1);
+
+        Dart_Handle newObject = Dart_Allocate(dartElementType);
+        ASSERT(!Dart_IsError(newObject));
+
+        Dart_Handle jsObject = Dart_SetField(newObject, Dart_NewStringFromCString("blink_jsObject"), blinkJsObject);
+        if (Dart_IsError(jsObject)) {
+            DartUtilities::reportProblem(domData->scriptExecutionContext(), jsObject);
+            goto fail;
+        }
+
+        newObject = Dart_InvokeConstructor(newObject, Dart_NewStringFromCString("created"), 0, 0);
+        if (Dart_IsError(newObject)) {
+            DartUtilities::reportProblem(domData->scriptExecutionContext(), newObject);
+            goto fail;
+        }
+
+        Dart_SetReturnValue(args, newObject);
+        return;
+    }
+
+fail:
+    Dart_ThrowException(exception);
+    ASSERT_NOT_REACHED();
+}
+
+void initializeCustomElement(Dart_NativeArguments args)
+{
+    ASSERT_NOT_REACHED();
+}
+
+void spawnDomUri(Dart_NativeArguments args)
+{
+    Dart_Handle exception = 0;
+    {
+        ExecutionContext* scriptExecutionContext = DartUtilities::scriptExecutionContext();
+        ASSERT(scriptExecutionContext);
+        DartController* dartController = DartController::retrieve(scriptExecutionContext);
+        if (!dartController)
+            return;
+        DartStringAdapter uri = DartUtilities::dartToString(args, 0, exception);
+        if (exception)
+            goto fail;
+        // TODO(vsm): Return isolate future.
+        dartController->spawnDomUri(uri);
+        return;
+    }
+
+fail:
+    Dart_ThrowException(exception);
+    ASSERT_NOT_REACHED();
+}
+
+void changeElementWrapper(Dart_NativeArguments args)
+{
+    ASSERT_NOT_REACHED();
+}
+
+class SpawnDomFunctionTask : public ExecutionContextTask {
+public:
+    SpawnDomFunctionTask(const char* libraryUrl, const char* functionName, Dart_Port replyTo, DartDOMData* parentDOMData)
+        : m_libraryUrl(strdup(libraryUrl))
+        , m_functionName(strdup(functionName))
+        , m_replyTo(replyTo)
+        , m_parentDOMData(parentDOMData) { }
+
+    ~SpawnDomFunctionTask()
+    {
+        free(m_functionName);
+        free(m_libraryUrl);
+    }
+
+    virtual void performTask(ExecutionContext* context)
+    {
+        ASSERT(isMainThread());
+        // controller can be 0 if context has been partially destroyed.
+        if (DartController* controller = DartController::retrieve(context)) {
+            controller->spawnHelperDomIsolate(String(m_libraryUrl),
+                String(m_functionName), m_parentDOMData, m_replyTo);
+        }
+    }
+
+private:
+    char* const m_libraryUrl;
+    char* const m_functionName;
+    const Dart_Port m_replyTo;
+    DartDOMData * const m_parentDOMData;
+};
+
+static Dart_Handle spawnDomHelperErrorMessage()
+{
+    return Dart_NewStringFromCString("spawnDomHelper expects a top-level function.");
+}
+
+static void spawnDomHelper(Dart_NativeArguments args)
+{
+    // NB: can be invoked on _any_ thread. DartUtilities assume main thread.
+    Dart_Handle exception = 0;
+    {
+        Dart_Handle closure = Dart_GetNativeArgument(args, 0);
+        ASSERT(!Dart_IsError(closure));
+        if (!Dart_IsClosure(closure)) {
+            exception = spawnDomHelperErrorMessage();
+            goto fail;
+        }
+
+        Dart_Handle function = Dart_ClosureFunction(closure);
+        ASSERT(!Dart_IsError(function));
+        bool isStatic = false;
+        Dart_Handle ALLOW_UNUSED result = Dart_FunctionIsStatic(function, &isStatic);
+        ASSERT(!Dart_IsError(result));
+        if (!isStatic) {
+            exception = spawnDomHelperErrorMessage();
+            goto fail;
+        }
+
+        Dart_Handle container = Dart_FunctionOwner(function);
+        ASSERT(!Dart_IsError(container));
+        // FIXME: Check if the container is a function once dartbug.com/4337 is resolved.
+        if (!Dart_IsLibrary(container)) {
+            // FIXME: Support static class methods.
+            exception = spawnDomHelperErrorMessage();
+            goto fail;
+        }
+        Dart_Handle libraryUrlHandle = Dart_LibraryUrl(container);
+        ASSERT(!Dart_IsError(libraryUrlHandle));
+        const char* libraryUrl = 0;
+        Dart_StringToCString(libraryUrlHandle, &libraryUrl);
+
+        Dart_Handle functionNameHandle = Dart_FunctionName(function);
+        ASSERT(!Dart_IsError(functionNameHandle));
+        const char* functionName;
+        Dart_StringToCString(functionNameHandle, &functionName);
+
+        Dart_Port portId = ILLEGAL_PORT;
+        Dart_IntegerToInt64(Dart_GetNativeArgument(args, 1), &portId);
+
+        DartDOMData* parentDOMData = DartDOMData::current();
+
+        ExecutionContext* context = DartDOMData::current()->scriptExecutionContext();
+        if (!context) {
+            exception = DartUtilities::internalErrorException("[spawnDomHelper] failed to retrieve ExecutionContext");
+            goto fail;
+        }
+
+        context->postTask(adoptPtr(new SpawnDomFunctionTask(libraryUrl, functionName, portId, parentDOMData)));
+        return;
+    }
+
+fail:
+    Dart_ThrowException(exception);
+    ASSERT_NOT_REACHED();
+}
+
+} // namespace DartNativeUtilitiesInternal
+
+extern Dart_NativeFunction blinkSnapshotResolver(Dart_Handle name, int argumentCount, bool* autoSetupScope);
+extern Dart_NativeFunction customDartDOMStringMapResolver(Dart_Handle name, int argumentCount, bool* autoSetupScope);
+
+static DartNativeEntry nativeEntries[] = {
+    { DartNativeUtilitiesInternal::forwardingPrint, 1, "Utils_forwardingPrint" },
+    { DartNativeUtilitiesInternal::getNewIsolateId, 0, "Utils_getNewIsolateId" },
+    { DartNativeUtilitiesInternal::changeElementWrapper, 2, "Utils_changeElementWrapper" },
+    { DartNativeUtilitiesInternal::customConstructorCreate, 2, "Utils_constructor_create" },
+    { DartNativeUtilitiesInternal::spawnDomUri, 1, "Utils_spawnDomUri" },
+    { 0, 0, 0 },
+};
+
+Dart_NativeFunction commonHtmlResolver(Dart_Handle name, int argumentCount, bool* autoSetupScope)
+{
+    String str = DartUtilities::toString(name);
+    if (argumentCount == 2 && str == "Utils_spawnDomHelper")
+        return DartNativeUtilitiesInternal::spawnDomHelper;
+    return 0;
+}
+
+Dart_NativeFunction domIsolateHtmlResolver(Dart_Handle name, int argumentCount, bool* autoSetupScope)
+{
+    // Some utility functions.
+    if (Dart_NativeFunction func = commonHtmlResolver(name, argumentCount, autoSetupScope))
+        return func;
+    if (Dart_NativeFunction func = JsInterop::resolver(name, argumentCount, autoSetupScope))
+        return func;
+
+    String str = DartUtilities::toString(name);
+    ASSERT(autoSetupScope);
+    *autoSetupScope = true;
+    for (intptr_t i = 0; nativeEntries[i].nativeFunction != 0; i++) {
+        if (argumentCount == nativeEntries[i].argumentCount && str == nativeEntries[i].name) {
+            return nativeEntries[i].nativeFunction;
+        }
+    }
+    return 0;
+}
+
+
+const uint8_t* domIsolateHtmlSymbolizer(Dart_NativeFunction nf)
+{
+    const uint8_t* r = 0;
+    r = JsInterop::symbolizer(nf);
+    if (r) {
+        return r;
+    }
+
+    for (intptr_t i = 0; nativeEntries[i].nativeFunction != 0; i++) {
+        if (nf == nativeEntries[i].nativeFunction) {
+            return reinterpret_cast<const uint8_t*>(nativeEntries[i].name);
+        }
+    }
+
+    return 0;
+}
+
+
+}