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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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 MediaResult_h_
#define MediaResult_h_
#include "nsError.h"
#include "nsPrintfCString.h"
// MediaResult can be used interchangeably with nsresult.
// It allows to store extra information such as where the error occurred.
// While nsresult is typically passed by value; due to its potential size, using
// MediaResult const references is recommended.
namespace mozilla {
class MediaResult
{
public:
MOZ_IMPLICIT MediaResult(nsresult aResult)
: mCode(aResult)
{
}
MediaResult(nsresult aResult, const nsACString& aMessage)
: mCode(aResult)
, mMessage(aMessage)
{
}
MediaResult(nsresult aResult, const char* aMessage)
: mCode(aResult)
, mMessage(aMessage)
{
}
MediaResult(const MediaResult& aOther) = default;
MediaResult(MediaResult&& aOther) = default;
MediaResult& operator=(const MediaResult& aOther) = default;
MediaResult& operator=(MediaResult&& aOther) = default;
nsresult Code() const { return mCode; }
const nsCString& Message() const { return mMessage; }
// Interoperations with nsresult.
bool operator==(nsresult aResult) const { return aResult == mCode; }
bool operator!=(nsresult aResult) const { return aResult != mCode; }
operator nsresult () const { return mCode; }
nsCString Description() const
{
if (NS_SUCCEEDED(mCode)) {
return nsCString();
}
return nsPrintfCString("0x%08x: %s", mCode, mMessage.get());
}
private:
nsresult mCode;
nsCString mMessage;
};
#define RESULT_DETAIL(arg, ...) nsPrintfCString("%s: " arg, __func__, ##__VA_ARGS__)
} // namespace mozilla
#endif // MediaResult_h_
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