зеркало из https://github.com/mozilla/gecko-dev.git
59 строки
1.4 KiB
C++
59 строки
1.4 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-*/
|
|
/* vim: set ts=2 sw=2 et tw=79: */
|
|
/* 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/. */
|
|
|
|
/**
|
|
* A struct for tracking exceptions that need to be thrown to JS.
|
|
*/
|
|
|
|
#ifndef mozilla_ErrorResult_h
|
|
#define mozilla_ErrorResult_h
|
|
|
|
#include "nscore.h"
|
|
|
|
namespace mozilla {
|
|
|
|
class ErrorResult {
|
|
public:
|
|
ErrorResult() {
|
|
mResult = NS_OK;
|
|
}
|
|
|
|
void Throw(nsresult rv) {
|
|
MOZ_ASSERT(NS_FAILED(rv), "Please don't try throwing success");
|
|
mResult = rv;
|
|
}
|
|
|
|
// In the future, we can add overloads of Throw that take more
|
|
// interesting things, like strings or DOM exception types or
|
|
// something if desired.
|
|
|
|
// Backwards-compat to make conversion simpler. We don't call
|
|
// Throw() here because people can easily pass success codes to
|
|
// this.
|
|
void operator=(nsresult rv) {
|
|
mResult = rv;
|
|
}
|
|
|
|
bool Failed() const {
|
|
return NS_FAILED(mResult);
|
|
}
|
|
|
|
nsresult ErrorCode() const {
|
|
return mResult;
|
|
}
|
|
|
|
private:
|
|
nsresult mResult;
|
|
|
|
// Not to be implemented, to make sure people always pass this by
|
|
// reference, not by value.
|
|
ErrorResult(const ErrorResult&) MOZ_DELETE;
|
|
};
|
|
|
|
} // namespace mozilla
|
|
|
|
#endif /* mozilla_ErrorResult_h */
|