Remove unused V8 integration code in Sky

sky/engine/bindings/core/v8/V8ScriptRunner.cpp

-/*
- * Copyright (C) 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:
- * 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 INC. 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 INC. 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 "sky/engine/config.h"
-#include "sky/engine/bindings/core/v8/V8ScriptRunner.h"
-
-#include "sky/engine/bindings/core/v8/ScriptSourceCode.h"
-#include "sky/engine/bindings/core/v8/V8Binding.h"
-#include "sky/engine/bindings/core/v8/V8GCController.h"
-#include "sky/engine/bindings/core/v8/V8RecursionScope.h"
-#include "sky/engine/bindings/core/v8/V8ThrowException.h"
-#include "sky/engine/core/dom/ExecutionContext.h"
-#include "sky/engine/platform/TraceEvent.h"
-
-namespace blink {
-
-namespace {
-
-// In order to make sure all pending messages to be processed in
-// v8::Function::Call, we don't call handleMaxRecursionDepthExceeded
-// directly. Instead, we create a v8::Function of
-// throwStackOverflowException and call it.
-void throwStackOverflowException(const v8::FunctionCallbackInfo<v8::Value>& info)
-{
-    V8ThrowException::throwRangeError("Maximum call stack size exceeded.", info.GetIsolate());
-}
-
-v8::Local<v8::Value> throwStackOverflowExceptionIfNeeded(v8::Isolate* isolate)
-{
-    if (V8PerIsolateData::from(isolate)->isHandlingRecursionLevelError()) {
-        // If we are already handling a recursion level error, we should
-        // not invoke v8::Function::Call.
-        return v8::Undefined(isolate);
-    }
-    V8PerIsolateData::from(isolate)->setIsHandlingRecursionLevelError(true);
-    v8::Local<v8::Value> result = v8::Function::New(isolate, throwStackOverflowException)->Call(v8::Undefined(isolate), 0, 0);
-    V8PerIsolateData::from(isolate)->setIsHandlingRecursionLevelError(false);
-    return result;
-}
-
-} // namespace
-
-v8::Local<v8::Script> V8ScriptRunner::compileScript(const ScriptSourceCode& source, v8::Isolate* isolate, V8CacheOptions cacheOptions)
-{
-    return compileScript(v8String(isolate, source.source()), source.url(), source.startPosition(), isolate, cacheOptions);
-}
-
-v8::Local<v8::Script> V8ScriptRunner::compileScript(v8::Handle<v8::String> code, const String& fileName, const TextPosition& scriptStartPosition, v8::Isolate* isolate, V8CacheOptions cacheOptions)
-{
-    TRACE_EVENT1("v8", "v8.compile", "fileName", fileName.utf8().data());
-    TRACE_EVENT_SCOPED_SAMPLING_STATE("v8", "V8Compile");
-
-    // NOTE: For compatibility with WebCore, ScriptSourceCode's line starts at
-    // 1, whereas v8 starts at 0.
-    v8::Handle<v8::String> name = v8String(isolate, fileName);
-    v8::Handle<v8::Integer> line = v8::Integer::New(isolate, scriptStartPosition.m_line.zeroBasedInt());
-    v8::Handle<v8::Integer> column = v8::Integer::New(isolate, scriptStartPosition.m_column.zeroBasedInt());
-    v8::ScriptOrigin origin(name, line, column, v8::True(isolate));
-
-    v8::ScriptCompiler::Source source(code, origin);
-    return v8::ScriptCompiler::Compile(isolate, &source, v8::ScriptCompiler::kNoCompileOptions);
-}
-
-v8::Local<v8::Value> V8ScriptRunner::runCompiledScript(v8::Handle<v8::Script> script, ExecutionContext* context, v8::Isolate* isolate)
-{
-    if (script.IsEmpty())
-        return v8::Local<v8::Value>();
-
-    TRACE_EVENT_SCOPED_SAMPLING_STATE("v8", "V8Execution");
-    TRACE_EVENT1("v8", "v8.run", "fileName", TRACE_STR_COPY(*v8::String::Utf8Value(script->GetUnboundScript()->GetScriptName())));
-
-    if (V8RecursionScope::recursionLevel(isolate) >= kMaxRecursionDepth)
-        return throwStackOverflowExceptionIfNeeded(isolate);
-
-    RELEASE_ASSERT(!context->isIteratingOverObservers());
-
-    V8RecursionScope recursionScope(isolate, context);
-    v8::Local<v8::Value> result = script->Run();
-    crashIfV8IsDead();
-    return result;
-}
-
-v8::Local<v8::Value> V8ScriptRunner::compileAndRunInternalScript(v8::Handle<v8::String> source, v8::Isolate* isolate, const String& fileName, const TextPosition& scriptStartPosition)
-{
-    v8::Handle<v8::Script> script = V8ScriptRunner::compileScript(source, fileName, scriptStartPosition, isolate);
-    if (script.IsEmpty())
-        return v8::Local<v8::Value>();
-
-    TRACE_EVENT0("v8", "v8.run");
-    TRACE_EVENT_SCOPED_SAMPLING_STATE("v8", "V8Execution");
-    V8RecursionScope::MicrotaskSuppression recursionScope(isolate);
-    v8::Local<v8::Value> result = script->Run();
-    crashIfV8IsDead();
-    return result;
-}
-
-v8::Local<v8::Value> V8ScriptRunner::runCompiledInternalScript(v8::Handle<v8::Script> script, v8::Isolate* isolate)
-{
-    TRACE_EVENT0("v8", "v8.run");
-    TRACE_EVENT_SCOPED_SAMPLING_STATE("v8", "V8Execution");
-    V8RecursionScope::MicrotaskSuppression recursionScope(isolate);
-    v8::Local<v8::Value> result = script->Run();
-    crashIfV8IsDead();
-    return result;
-}
-
-v8::Local<v8::Value> V8ScriptRunner::callFunction(v8::Handle<v8::Function> function, ExecutionContext* context, v8::Handle<v8::Value> receiver, int argc, v8::Handle<v8::Value> args[], v8::Isolate* isolate)
-{
-    TRACE_EVENT0("v8", "v8.callFunction");
-    TRACE_EVENT_SCOPED_SAMPLING_STATE("v8", "V8Execution");
-
-    if (V8RecursionScope::recursionLevel(isolate) >= kMaxRecursionDepth)
-        return throwStackOverflowExceptionIfNeeded(isolate);
-
-    RELEASE_ASSERT(!context->isIteratingOverObservers());
-
-    V8RecursionScope recursionScope(isolate, context);
-    v8::Local<v8::Value> result = function->Call(receiver, argc, args);
-    crashIfV8IsDead();
-    return result;
-}
-
-v8::Local<v8::Value> V8ScriptRunner::callInternalFunction(v8::Handle<v8::Function> function, v8::Handle<v8::Value> receiver, int argc, v8::Handle<v8::Value> args[], v8::Isolate* isolate)
-{
-    TRACE_EVENT0("v8", "v8.callFunction");
-    TRACE_EVENT_SCOPED_SAMPLING_STATE("v8", "V8Execution");
-    V8RecursionScope::MicrotaskSuppression recursionScope(isolate);
-    v8::Local<v8::Value> result = function->Call(receiver, argc, args);
-    crashIfV8IsDead();
-    return result;
-}
-
-v8::Local<v8::Object> V8ScriptRunner::instantiateObject(v8::Isolate* isolate, v8::Handle<v8::ObjectTemplate> objectTemplate)
-{
-    TRACE_EVENT0("v8", "v8.newInstance");
-    TRACE_EVENT_SCOPED_SAMPLING_STATE("v8", "V8Execution");
-
-    V8RecursionScope::MicrotaskSuppression scope(isolate);
-    v8::Local<v8::Object> result = objectTemplate->NewInstance();
-    crashIfV8IsDead();
-    return result;
-}
-
-v8::Local<v8::Object> V8ScriptRunner::instantiateObject(v8::Isolate* isolate, v8::Handle<v8::Function> function, int argc, v8::Handle<v8::Value> argv[])
-{
-    TRACE_EVENT0("v8", "v8.newInstance");
-    TRACE_EVENT_SCOPED_SAMPLING_STATE("v8", "V8Execution");
-
-    V8RecursionScope::MicrotaskSuppression scope(isolate);
-    v8::Local<v8::Object> result = function->NewInstance(argc, argv);
-    crashIfV8IsDead();
-    return result;
-}
-
-v8::Local<v8::Object> V8ScriptRunner::instantiateObjectInDocument(v8::Isolate* isolate, v8::Handle<v8::Function> function, ExecutionContext* context, int argc, v8::Handle<v8::Value> argv[])
-{
-    TRACE_EVENT0("v8", "v8.newInstance");
-    TRACE_EVENT_SCOPED_SAMPLING_STATE("v8", "V8Execution");
-    V8RecursionScope scope(isolate, context);
-    v8::Local<v8::Object> result = function->NewInstance(argc, argv);
-    crashIfV8IsDead();
-    return result;
-}
-
-void V8ScriptRunner::runModule(v8::Isolate* isolate, ExecutionContext* context, V8ScriptModule& module)
-{
-    TRACE_EVENT0("v8", "v8.runModule");
-    TRACE_EVENT_SCOPED_SAMPLING_STATE("v8", "V8Execution");
-    V8RecursionScope scope(isolate, context);
-
-    StringBuilder hackedSource;
-    hackedSource.append("(function(");
-    for (String& formal : module.formalDependencies) {
-        hackedSource.append(formal);
-        hackedSource.append(", ");
-    }
-    hackedSource.append("module) {");
-    hackedSource.append(module.source);
-    hackedSource.append("\n/**/})");
-
-    v8::Handle<v8::Script> script = compileScript(
-        v8String(isolate, hackedSource.toString()),
-        module.resourceName,
-        module.textPosition,
-        isolate,
-        V8CacheOptionsOff);
-
-    if (script.IsEmpty())
-        return;
-
-    v8::Handle<v8::Value> scriptResult = script->Run();
-    if (scriptResult.IsEmpty())
-        return;
-
-    auto arguments = module.resolvedDependencies;
-    arguments.append(module.moduleObject);
-
-    RELEASE_ASSERT(scriptResult->IsObject());
-    scriptResult.As<v8::Object>()->CallAsFunction(
-        v8::Null(isolate), arguments.size(), arguments.data());
-    crashIfV8IsDead();
-}
-
-} // namespace blink