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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef mozilla_dom_DOMException_h__
#define mozilla_dom_DOMException_h__
// We intentionally shadow non-virtual methods, but gcc gets confused.
#ifdef __GNUC__
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Woverloaded-virtual"
#endif
#include <stdint.h>
#include "jspubtd.h"
#include "js/GCAPI.h"
#include "nsCOMPtr.h"
#include "nsCycleCollectionParticipant.h"
#include "nsID.h"
#include "nsIDOMDOMException.h"
#include "nsWrapperCache.h"
#include "xpcexception.h"
#include "nsString.h"
#include "mozilla/dom/BindingDeclarations.h"
class nsIStackFrame;
class nsString;
nsresult
NS_GetNameAndMessageForDOMNSResult(nsresult aNSResult, nsACString& aName,
nsACString& aMessage,
uint16_t* aCode = nullptr);
namespace mozilla {
class ErrorResult;
namespace dom {
class GlobalObject;
#define MOZILLA_EXCEPTION_IID \
{ 0x55eda557, 0xeba0, 0x4fe3, \
{ 0xae, 0x2e, 0xf3, 0x94, 0x49, 0x23, 0x62, 0xd6 } }
class Exception : public nsIXPCException,
public nsWrapperCache
{
public:
NS_DECLARE_STATIC_IID_ACCESSOR(MOZILLA_EXCEPTION_IID)
NS_DEFINE_STATIC_CID_ACCESSOR(NS_XPCEXCEPTION_CID)
NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS(Exception)
NS_DECL_CYCLE_COLLECTING_ISUPPORTS
NS_DECL_NSIEXCEPTION
NS_DECL_NSIXPCEXCEPTION
// Cruft used by XPConnect for exceptions originating in JS implemented
// components.
bool StealJSVal(JS::Value* aVp);
void StowJSVal(JS::Value& aVp);
// WebIDL API
virtual JSObject* WrapObject(JSContext* cx, JS::Handle<JSObject*> aGivenProto)
override;
nsISupports* GetParentObject() const { return nullptr; }
void GetMessageMoz(nsString& retval);
uint32_t Result() const;
void GetName(nsString& retval);
virtual void GetErrorMessage(nsAString& aRetVal)
{
// Since GetName and GetMessageMoz are non-virtual and they deal with
// different member variables in Exception vs. DOMException, have a
// virtual method to ensure the right error message creation.
nsAutoString name;
nsAutoString message;
GetName(name);
GetMessageMoz(message);
CreateErrorMessage(name, message, aRetVal);
}
// The XPCOM GetFilename does the right thing. It might throw, but we want to
// return an empty filename in that case anyway, instead of throwing.
uint32_t LineNumber(JSContext* aCx) const;
uint32_t ColumnNumber() const;
already_AddRefed<nsIStackFrame> GetLocation() const;
already_AddRefed<nsISupports> GetData() const;
void GetStack(JSContext* aCx, nsAString& aStack, ErrorResult& aRv) const;
void Stringify(JSContext* aCx, nsString& retval);
// XPCOM factory ctor.
Exception();
Exception(const nsACString& aMessage,
nsresult aResult,
const nsACString& aName,
nsIStackFrame *aLocation,
nsISupports *aData);
protected:
virtual ~Exception();
void CreateErrorMessage(const nsAString& aName, const nsAString& aMessage,
nsAString& aRetVal)
{
// Create similar error message as what ErrorReport::init does in jsexn.cpp.
if (!aName.IsEmpty() && !aMessage.IsEmpty()) {
aRetVal.Assign(aName);
aRetVal.AppendLiteral(": ");
aRetVal.Append(aMessage);
} else if (!aName.IsEmpty()) {
aRetVal.Assign(aName);
} else if (!aMessage.IsEmpty()) {
aRetVal.Assign(aMessage);
} else {
aRetVal.Truncate();
}
}
nsCString mMessage;
nsresult mResult;
nsCString mName;
nsCOMPtr<nsIStackFrame> mLocation;
nsCOMPtr<nsISupports> mData;
bool mInitialized;
bool mHoldingJSVal;
JS::Heap<JS::Value> mThrownJSVal;
private:
static bool sEverMadeOneFromFactory;
};
NS_DEFINE_STATIC_IID_ACCESSOR(Exception, MOZILLA_EXCEPTION_IID)
class DOMException : public Exception,
public nsIDOMDOMException
{
public:
DOMException(nsresult aRv, const nsACString& aMessage,
const nsACString& aName, uint16_t aCode);
NS_DECL_ISUPPORTS_INHERITED
NS_DECL_NSIDOMDOMEXCEPTION
// nsIException overrides
NS_IMETHOD ToString(JSContext* aCx, nsACString& aReturn) override;
// nsWrapperCache overrides
virtual JSObject* WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto)
override;
static already_AddRefed<DOMException>
Constructor(GlobalObject& /* unused */,
const nsAString& aMessage,
const Optional<nsAString>& aName,
ErrorResult& aError);
uint16_t Code() const {
return mCode;
}
// Intentionally shadow the nsXPCException version.
void GetMessageMoz(nsString& retval);
void GetName(nsString& retval);
virtual void GetErrorMessage(nsAString& aRetVal) override
{
// See the comment in Exception::GetErrorMessage.
nsAutoString name;
nsAutoString message;
GetName(name);
GetMessageMoz(message);
CreateErrorMessage(name, message, aRetVal);
}
static already_AddRefed<DOMException>
Create(nsresult aRv);
static already_AddRefed<DOMException>
Create(nsresult aRv, const nsACString& aMessage);
protected:
virtual ~DOMException() {}
nsCString mName;
nsCString mMessage;
uint16_t mCode;
};
} // namespace dom
} // namespace mozilla
#ifdef __GNUC__
#pragma GCC diagnostic pop
#endif
#endif
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