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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/. */
#include "mozilla/ArrayUtils.h"
#include "mozilla/ErrorNames.h"
#include "nsString.h"
#include "prerror.h"
#include "MainThreadUtils.h"
// Get the GetErrorNameInternal method
#include "ErrorNamesInternal.h"
namespace mozilla {
const char* GetStaticErrorName(nsresult rv) { return GetErrorNameInternal(rv); }
void GetErrorName(nsresult rv, nsACString& name) {
if (const char* errorName = GetErrorNameInternal(rv)) {
name.AssignASCII(errorName);
return;
}
bool isSecurityError = NS_ERROR_GET_MODULE(rv) == NS_ERROR_MODULE_SECURITY;
// NS_ERROR_MODULE_SECURITY is the only module that is "allowed" to
// synthesize nsresult error codes that are not listed in ErrorList.h. (The
// NS_ERROR_MODULE_SECURITY error codes are synthesized from NSPR error
// codes.)
MOZ_ASSERT(isSecurityError);
if (NS_SUCCEEDED(rv)) {
name.AssignLiteral("NS_ERROR_GENERATE_SUCCESS(");
} else {
name.AssignLiteral("NS_ERROR_GENERATE_FAILURE(");
}
if (isSecurityError) {
name.AppendLiteral("NS_ERROR_MODULE_SECURITY");
} else {
// This should never happen given the assertion above, so we don't bother
// trying to print a symbolic name for the module here.
name.AppendInt(NS_ERROR_GET_MODULE(rv));
}
name.AppendLiteral(", ");
const char* nsprName = nullptr;
if (isSecurityError && NS_IsMainThread()) {
// Invert the logic from NSSErrorsService::GetXPCOMFromNSSError
PRErrorCode nsprCode = -1 * static_cast<PRErrorCode>(NS_ERROR_GET_CODE(rv));
nsprName = PR_ErrorToName(nsprCode);
// All NSPR error codes defined by NSPR or NSS should have a name mapping.
MOZ_ASSERT(nsprName);
}
if (nsprName) {
name.AppendASCII(nsprName);
} else {
name.AppendInt(NS_ERROR_GET_CODE(rv));
}
name.AppendLiteral(")");
}
} // namespace mozilla
extern "C" {
// This is an extern "C" binding for the GetErrorName method which is used by
// the nsresult rust bindings in xpcom/rust/nserror.
void Gecko_GetErrorName(nsresult aRv, nsACString& aName) {
mozilla::GetErrorName(aRv, aName);
}
}
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