Initial implementation of bindings and basic classes for worklets.

third_party/WebKit/Source/bindings/core/v8/WorkerScriptController.cpp

Index: third_party/WebKit/Source/bindings/core/v8/WorkerScriptController.cpp
diff --git a/third_party/WebKit/Source/bindings/core/v8/WorkerScriptController.cpp b/third_party/WebKit/Source/bindings/core/v8/WorkerScriptController.cpp
deleted file mode 100644
index 4f5668bf9bac4d8d91e89fcb6f4d67ec90a335e4..0000000000000000000000000000000000000000
--- a/third_party/WebKit/Source/bindings/core/v8/WorkerScriptController.cpp
+++ /dev/null
@@ -1,311 +0,0 @@
-/*
- * Copyright (C) 2009, 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 "bindings/core/v8/WorkerScriptController.h"
-
-#include "bindings/core/v8/ScriptSourceCode.h"
-#include "bindings/core/v8/ScriptValue.h"
-#include "bindings/core/v8/V8DedicatedWorkerGlobalScope.h"
-#include "bindings/core/v8/V8ErrorHandler.h"
-#include "bindings/core/v8/V8Initializer.h"
-#include "bindings/core/v8/V8ObjectConstructor.h"
-#include "bindings/core/v8/V8ScriptRunner.h"
-#include "bindings/core/v8/V8SharedWorkerGlobalScope.h"
-#include "bindings/core/v8/V8WorkerGlobalScope.h"
-#include "bindings/core/v8/WrapperTypeInfo.h"
-#include "core/events/ErrorEvent.h"
-#include "core/frame/DOMTimer.h"
-#include "core/inspector/ScriptCallStack.h"
-#include "core/inspector/WorkerThreadDebugger.h"
-#include "core/workers/SharedWorkerGlobalScope.h"
-#include "core/workers/WorkerGlobalScope.h"
-#include "core/workers/WorkerObjectProxy.h"
-#include "core/workers/WorkerThread.h"
-#include "platform/heap/ThreadState.h"
-#include "public/platform/Platform.h"
-#include <v8.h>
-
-namespace blink {
-
-class WorkerScriptController::ExecutionState final {
-    STACK_ALLOCATED();
-public:
-    explicit ExecutionState(WorkerScriptController* controller)
-        : hadException(false)
-        , lineNumber(0)
-        , columnNumber(0)
-        , m_controller(controller)
-        , m_outerState(controller->m_executionState)
-    {
-        m_controller->m_executionState = this;
-    }
-
-    ~ExecutionState()
-    {
-        m_controller->m_executionState = m_outerState;
-    }
-
-    DEFINE_INLINE_TRACE()
-    {
-        visitor->trace(m_errorEventFromImportedScript);
-        visitor->trace(m_controller);
-    }
-
-    bool hadException;
-    String errorMessage;
-    int lineNumber;
-    int columnNumber;
-    String sourceURL;
-    ScriptValue exception;
-    RefPtrWillBeMember<ErrorEvent> m_errorEventFromImportedScript;
-
-    // A ExecutionState context is stack allocated by
-    // WorkerScriptController::evaluate(), with the contoller using it
-    // during script evaluation. To handle nested evaluate() uses,
-    // ExecutionStates are chained together;
-    // |m_outerState| keeps a pointer to the context object one level out
-    // (or 0, if outermost.) Upon return from evaluate(), the
-    // WorkerScriptController's ExecutionState is popped and the previous one
-    // restored (see above dtor.)
-    //
-    // With Oilpan, |m_outerState| isn't traced. It'll be "up the stack"
-    // and its fields will be traced when scanning the stack.
-    RawPtrWillBeMember<WorkerScriptController> m_controller;
-    ExecutionState* m_outerState;
-};
-
-PassOwnPtrWillBeRawPtr<WorkerScriptController> WorkerScriptController::create(WorkerGlobalScope* workerGlobalScope, v8::Isolate* isolate)
-{
-    return adoptPtrWillBeNoop(new WorkerScriptController(workerGlobalScope, isolate));
-}
-
-WorkerScriptController::WorkerScriptController(WorkerGlobalScope* workerGlobalScope, v8::Isolate* isolate)
-    : m_workerGlobalScope(workerGlobalScope)
-    , m_executionForbidden(false)
-    , m_executionScheduledToTerminate(false)
-    , m_rejectedPromises(RejectedPromises::create())
-    , m_executionState(0)
-{
-    ASSERT(isolate);
-    m_world = DOMWrapperWorld::create(isolate, WorkerWorldId);
-}
-
-WorkerScriptController::~WorkerScriptController()
-{
-    ASSERT(!m_rejectedPromises);
-}
-
-void WorkerScriptController::dispose()
-{
-    m_rejectedPromises->dispose();
-    m_rejectedPromises.release();
-
-    m_world->dispose();
-
-    if (isContextInitialized())
-        m_scriptState->disposePerContextData();
-}
-
-bool WorkerScriptController::initializeContextIfNeeded()
-{
-    v8::HandleScope handleScope(isolate());
-
-    if (isContextInitialized())
-        return true;
-
-    v8::Local<v8::Context> context = v8::Context::New(isolate());
-    if (context.IsEmpty())
-        return false;
-
-    m_scriptState = ScriptState::create(context, m_world);
-
-    ScriptState::Scope scope(m_scriptState.get());
-
-    // Name new context for debugging.
-    WorkerThreadDebugger::setContextDebugData(context);
-
-    // Create a new JS object and use it as the prototype for the shadow global object.
-    const WrapperTypeInfo* wrapperTypeInfo = m_workerGlobalScope->wrapperTypeInfo();
-    v8::Local<v8::Function> workerGlobalScopeConstructor = m_scriptState->perContextData()->constructorForType(wrapperTypeInfo);
-    if (workerGlobalScopeConstructor.IsEmpty())
-        return false;
-    v8::Local<v8::Object> jsWorkerGlobalScope;
-    if (!V8ObjectConstructor::newInstance(isolate(), workerGlobalScopeConstructor).ToLocal(&jsWorkerGlobalScope)) {
-        m_scriptState->disposePerContextData();
-        return false;
-    }
-
-    jsWorkerGlobalScope = V8DOMWrapper::associateObjectWithWrapper(isolate(), m_workerGlobalScope, wrapperTypeInfo, jsWorkerGlobalScope);
-
-    // Insert the object instance as the prototype of the shadow object.
-    v8::Local<v8::Object> globalObject = v8::Local<v8::Object>::Cast(m_scriptState->context()->Global()->GetPrototype());
-    return v8CallBoolean(globalObject->SetPrototype(context, jsWorkerGlobalScope));
-}
-
-v8::Isolate* WorkerScriptController::isolate() const
-{
-    return m_workerGlobalScope->thread()->isolate();
-}
-
-ScriptValue WorkerScriptController::evaluate(const String& script, const String& fileName, const TextPosition& scriptStartPosition, CachedMetadataHandler* cacheHandler, V8CacheOptions v8CacheOptions)
-{
-    if (!initializeContextIfNeeded())
-        return ScriptValue();
-
-    ScriptState::Scope scope(m_scriptState.get());
-
-    if (!m_disableEvalPending.isEmpty()) {
-        m_scriptState->context()->AllowCodeGenerationFromStrings(false);
-        m_scriptState->context()->SetErrorMessageForCodeGenerationFromStrings(v8String(isolate(), m_disableEvalPending));
-        m_disableEvalPending = String();
-    }
-
-    v8::TryCatch block(isolate());
-
-    v8::Local<v8::Script> compiledScript;
-    v8::MaybeLocal<v8::Value> maybeResult;
-    if (v8Call(V8ScriptRunner::compileScript(script, fileName, String(), scriptStartPosition, isolate(), cacheHandler, SharableCrossOrigin, v8CacheOptions), compiledScript, block))
-        maybeResult = V8ScriptRunner::runCompiledScript(isolate(), compiledScript, m_workerGlobalScope);
-
-    if (!block.CanContinue()) {
-        forbidExecution();
-        return ScriptValue();
-    }
-
-    if (block.HasCaught()) {
-        v8::Local<v8::Message> message = block.Message();
-        m_executionState->hadException = true;
-        m_executionState->errorMessage = toCoreString(message->Get());
-        if (v8Call(message->GetLineNumber(m_scriptState->context()), m_executionState->lineNumber)
-            && v8Call(message->GetStartColumn(m_scriptState->context()), m_executionState->columnNumber)) {
-            ++m_executionState->columnNumber;
-        } else {
-            m_executionState->lineNumber = 0;
-            m_executionState->columnNumber = 0;
-        }
-
-        TOSTRING_DEFAULT(V8StringResource<>, sourceURL, message->GetScriptOrigin().ResourceName(), ScriptValue());
-        m_executionState->sourceURL = sourceURL;
-        m_executionState->exception = ScriptValue(m_scriptState.get(), block.Exception());
-        block.Reset();
-    } else {
-        m_executionState->hadException = false;
-    }
-
-    v8::Local<v8::Value> result;
-    if (!maybeResult.ToLocal(&result) || result->IsUndefined())
-        return ScriptValue();
-
-    return ScriptValue(m_scriptState.get(), result);
-}
-
-bool WorkerScriptController::evaluate(const ScriptSourceCode& sourceCode, RefPtrWillBeRawPtr<ErrorEvent>* errorEvent, CachedMetadataHandler* cacheHandler, V8CacheOptions v8CacheOptions)
-{
-    if (isExecutionForbidden())
-        return false;
-
-    ExecutionState state(this);
-    evaluate(sourceCode.source(), sourceCode.url().string(), sourceCode.startPosition(), cacheHandler, v8CacheOptions);
-    if (isExecutionForbidden())
-        return false;
-    if (state.hadException) {
-        if (errorEvent) {
-            if (state.m_errorEventFromImportedScript) {
-                // Propagate inner error event outwards.
-                *errorEvent = state.m_errorEventFromImportedScript.release();
-                return false;
-            }
-            if (m_workerGlobalScope->shouldSanitizeScriptError(state.sourceURL, NotSharableCrossOrigin))
-                *errorEvent = ErrorEvent::createSanitizedError(m_world.get());
-            else
-                *errorEvent = ErrorEvent::create(state.errorMessage, state.sourceURL, state.lineNumber, state.columnNumber, m_world.get());
-            V8ErrorHandler::storeExceptionOnErrorEventWrapper(m_scriptState.get(), errorEvent->get(), state.exception.v8Value(), m_scriptState->context()->Global());
-        } else {
-            ASSERT(!m_workerGlobalScope->shouldSanitizeScriptError(state.sourceURL, NotSharableCrossOrigin));
-            RefPtrWillBeRawPtr<ErrorEvent> event = nullptr;
-            if (state.m_errorEventFromImportedScript)
-                event = state.m_errorEventFromImportedScript.release();
-            else
-                event = ErrorEvent::create(state.errorMessage, state.sourceURL, state.lineNumber, state.columnNumber, m_world.get());
-            m_workerGlobalScope->reportException(event, 0, nullptr, NotSharableCrossOrigin);
-        }
-        return false;
-    }
-    return true;
-}
-
-void WorkerScriptController::willScheduleExecutionTermination()
-{
-    // The mutex provides a memory barrier to ensure that once
-    // termination is scheduled, isExecutionTerminating will
-    // accurately reflect that state when called from another thread.
-    MutexLocker locker(m_scheduledTerminationMutex);
-    m_executionScheduledToTerminate = true;
-}
-
-bool WorkerScriptController::isExecutionTerminating() const
-{
-    // See comments in willScheduleExecutionTermination regarding mutex usage.
-    MutexLocker locker(m_scheduledTerminationMutex);
-    return m_executionScheduledToTerminate;
-}
-
-void WorkerScriptController::forbidExecution()
-{
-    ASSERT(m_workerGlobalScope->isContextThread());
-    m_executionForbidden = true;
-}
-
-bool WorkerScriptController::isExecutionForbidden() const
-{
-    ASSERT(m_workerGlobalScope->isContextThread());
-    return m_executionForbidden;
-}
-
-void WorkerScriptController::disableEval(const String& errorMessage)
-{
-    m_disableEvalPending = errorMessage;
-}
-
-void WorkerScriptController::rethrowExceptionFromImportedScript(PassRefPtrWillBeRawPtr<ErrorEvent> errorEvent, ExceptionState& exceptionState)
-{
-    const String& errorMessage = errorEvent->message();
-    if (m_executionState)
-        m_executionState->m_errorEventFromImportedScript = errorEvent;
-    exceptionState.rethrowV8Exception(V8ThrowException::createGeneralError(isolate(), errorMessage));
-}
-
-DEFINE_TRACE(WorkerScriptController)
-{
-    visitor->trace(m_workerGlobalScope);
-    visitor->trace(m_rejectedPromises);
-}
-
-} // namespace blink