binding: Always throws an exception in the current realm.

third_party/WebKit/Source/bindings/core/v8/V8ThrowException.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
@@ skipping 15 matching lines @@
 
 #include "bindings/core/v8/BindingSecurity.h"
 #include "bindings/core/v8/V8Binding.h"
 #include "bindings/core/v8/V8DOMException.h"
 #include "bindings/core/v8/V8PrivateProperty.h"
 #include "core/dom/DOMException.h"
 #include "core/dom/ExceptionCode.h"
 
 namespace blink {
 
-static void domExceptionStackGetter(v8::Local<v8::Name> name, const v8::PropertyCallbackInfo<v8::Value>& info)
+namespace {
+
+void domExceptionStackGetter(v8::Local<v8::Name> name, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     v8::Isolate* isolate = info.GetIsolate();
     v8::Local<v8::Value> value;
     if (info.Data().As<v8::Object>()->Get(isolate->GetCurrentContext(), v8AtomicString(isolate, "stack")).ToLocal(&value))
         v8SetReturnValue(info, value);
 }
 
-static void domExceptionStackSetter(v8::Local<v8::Name> name, v8::Local<v8::Value> value, const v8::PropertyCallbackInfo<void>& info)
+void domExceptionStackSetter(v8::Local<v8::Name> name, v8::Local<v8::Value> value, const v8::PropertyCallbackInfo<void>& info)
 {
     v8::Maybe<bool> unused = info.Data().As<v8::Object>()->Set(info.GetIsolate()->GetCurrentContext(), v8AtomicString(info.GetIsolate(), "stack"), value);
     ALLOW_UNUSED_LOCAL(unused);
 }
 
-v8::Local<v8::Value> V8ThrowException::createDOMException(v8::Isolate* isolate, int ec, const String& sanitizedMessage, const String& unsanitizedMessage, const v8::Local<v8::Object>& creationContext)
+} // namespace
+
+v8::Local<v8::Value> V8ThrowException::createDOMException(v8::Isolate* isolate, ExceptionCode exceptionCode, const String& sanitizedMessage, const String& unsanitizedMessage)
 {
-    if (ec <= 0 || isolate->IsExecutionTerminating())
-        return v8Undefined();
+    DCHECK_GT(exceptionCode, 0);
+    DCHECK(exceptionCode == SecurityError || unsanitizedMessage.isNull());
 
-    ASSERT(ec == SecurityError || unsanitizedMessage.isEmpty());
+    if (isolate->IsExecutionTerminating())
+        return v8::Local<v8::Value>();
 
-    if (ec == V8GeneralError)
-        return V8ThrowException::createGeneralError(isolate, sanitizedMessage);
-    if (ec == V8TypeError)
-        return V8ThrowException::createTypeError(isolate, sanitizedMessage);
-    if (ec == V8RangeError)
-        return V8ThrowException::createRangeError(isolate, sanitizedMessage);
-    if (ec == V8SyntaxError)
-        return V8ThrowException::createSyntaxError(isolate, sanitizedMessage);
-    if (ec == V8ReferenceError)
-        return V8ThrowException::createReferenceError(isolate, sanitizedMessage);
-
-    v8::Local<v8::Object> sanitizedCreationContext = creationContext;
-
-    // FIXME: Is the current context always the right choice?
-    ScriptState* scriptState = ScriptState::from(creationContext->CreationContext());
-    Frame* frame = toFrameIfNotDetached(scriptState->context());
-    if (!frame || !BindingSecurity::shouldAllowAccessToFrame(isolate, currentDOMWindow(isolate), frame, DoNotReportSecurityError)) {
-        scriptState = ScriptState::current(isolate);
-        sanitizedCreationContext = scriptState->context()->Global();
+    switch (exceptionCode) {
+    case V8GeneralError:
+        return createGeneralError(isolate, sanitizedMessage);
+    case V8TypeError:
+        return createTypeError(isolate, sanitizedMessage);
+    case V8RangeError:
+        return createRangeError(isolate, sanitizedMessage);
+    case V8SyntaxError:
+        return createSyntaxError(isolate, sanitizedMessage);
+    case V8ReferenceError:
+        return createReferenceError(isolate, sanitizedMessage);
     }
 
-    v8::TryCatch tryCatch(isolate);
-
-    DOMException* domException = DOMException::create(ec, sanitizedMessage, unsanitizedMessage);
-    v8::Local<v8::Value> exception = toV8(domException, sanitizedCreationContext, isolate);
-
-    if (tryCatch.HasCaught()) {
-        ASSERT(exception.IsEmpty());
-        return tryCatch.Exception();
-    }
-    ASSERT(!exception.IsEmpty());
-
-    // Attach an Error object to the DOMException. This is then lazily used to get the stack value.
+    DOMException* domException = DOMException::create(exceptionCode, sanitizedMessage, unsanitizedMessage);
+    v8::Local<v8::Object> exceptionObj = toV8(domException, isolate->GetCurrentContext()->Global(), isolate).As<v8::Object>();
+    // Attach an Error object to the DOMException. This is then lazily used to
+    // get the stack value.
     v8::Local<v8::Value> error = v8::Exception::Error(v8String(isolate, domException->message()));
-    ASSERT(!error.IsEmpty());
-    v8::Local<v8::Object> exceptionObject = exception.As<v8::Object>();
-    exceptionObject->SetAccessor(isolate->GetCurrentContext(), v8AtomicString(isolate, "stack"), domExceptionStackGetter, domExceptionStackSetter, error).ToChecked();
+    exceptionObj->SetAccessor(isolate->GetCurrentContext(), v8AtomicString(isolate, "stack"), domExceptionStackGetter, domExceptionStackSetter, error).ToChecked();
 
     auto privateError = V8PrivateProperty::getDOMExceptionError(isolate);
-    privateError.set(scriptState->context(), exceptionObject, error);
+    privateError.set(isolate->GetCurrentContext(), exceptionObj, error);
 
-    return exception;
+    return exceptionObj;
 }
 
-v8::Local<v8::Value> V8ThrowException::createGeneralError(v8::Isolate* isolate, const String& message)
-{
-    return v8::Exception::Error(v8String(isolate, message.isNull() ? "Error" : message));
+#define DEFINE_CREATE_AND_THROW_ERROR_FUNC(blinkErrorType, v8ErrorType, defaultMessage) \
+v8::Local<v8::Value> V8ThrowException::create##blinkErrorType(v8::Isolate* isolate, const String& message) \
+{ \
+    return v8::Exception::v8ErrorType(v8String(isolate, message.isNull() ? defaultMessage : message)); \
+} \
+\
+void V8ThrowException::throw##blinkErrorType(v8::Isolate* isolate, const String& message) \
+{ \
+    throwException(isolate, create##blinkErrorType(isolate, message));    \
 }
 
-v8::Local<v8::Value> V8ThrowException::throwGeneralError(v8::Isolate* isolate, const String& message)
-{
-    v8::Local<v8::Value> exception = V8ThrowException::createGeneralError(isolate, message);
-    return V8ThrowException::throwException(exception, isolate);
-}
+DEFINE_CREATE_AND_THROW_ERROR_FUNC(GeneralError, Error, "Error")
+DEFINE_CREATE_AND_THROW_ERROR_FUNC(RangeError, RangeError, "Range error")
+DEFINE_CREATE_AND_THROW_ERROR_FUNC(ReferenceError, ReferenceError, "Reference error")
+DEFINE_CREATE_AND_THROW_ERROR_FUNC(SyntaxError, SyntaxError, "Syntax error")
+DEFINE_CREATE_AND_THROW_ERROR_FUNC(TypeError, TypeError, "Type error")
 
-v8::Local<v8::Value> V8ThrowException::createTypeError(v8::Isolate* isolate, const String& message)
-{
-    return v8::Exception::TypeError(v8String(isolate, message.isNull() ? "Type error" : message));
-}
-
-v8::Local<v8::Value> V8ThrowException::throwTypeError(v8::Isolate* isolate, const String& message)
-{
-    v8::Local<v8::Value> exception = V8ThrowException::createTypeError(isolate, message);
-    return V8ThrowException::throwException(exception, isolate);
-}
-
-v8::Local<v8::Value> V8ThrowException::createRangeError(v8::Isolate* isolate, const String& message)
-{
-    return v8::Exception::RangeError(v8String(isolate, message.isNull() ? "Range error" : message));
-}
-
-v8::Local<v8::Value> V8ThrowException::throwRangeError(v8::Isolate* isolate, const String& message)
-{
-    v8::Local<v8::Value> exception = V8ThrowException::createRangeError(isolate, message);
-    return V8ThrowException::throwException(exception, isolate);
-}
-
-v8::Local<v8::Value> V8ThrowException::createSyntaxError(v8::Isolate* isolate, const String& message)
-{
-    return v8::Exception::SyntaxError(v8String(isolate, message.isNull() ? "Syntax error" : message));
-}
-
-v8::Local<v8::Value> V8ThrowException::throwSyntaxError(v8::Isolate* isolate, const String& message)
-{
-    v8::Local<v8::Value> exception = V8ThrowException::createSyntaxError(isolate, message);
-    return V8ThrowException::throwException(exception, isolate);
-}
-
-v8::Local<v8::Value> V8ThrowException::createReferenceError(v8::Isolate* isolate, const String& message)
-{
-    return v8::Exception::ReferenceError(v8String(isolate, message.isNull() ? "Reference error" : message));
-}
-
-v8::Local<v8::Value> V8ThrowException::throwReferenceError(v8::Isolate* isolate, const String& message)
-{
-    v8::Local<v8::Value> exception = V8ThrowException::createReferenceError(isolate, message);
-    return V8ThrowException::throwException(exception, isolate);
-}
-
-v8::Local<v8::Value> V8ThrowException::throwException(v8::Local<v8::Value> exception, v8::Isolate* isolate)
-{
-    if (!isolate->IsExecutionTerminating())
-        isolate->ThrowException(exception);
-    return v8::Undefined(isolate);
-}
+#undef DEFINE_CREATE_AND_THROW_ERROR_FUNC
 
 } // namespace blink