85 lines
2.1 KiB
C++
85 lines
2.1 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "mozilla/ArrayUtils.h"
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#include "mozilla/ErrorNames.h"
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#include "nsString.h"
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#include "prerror.h"
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namespace {
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struct ErrorEntry
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{
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nsresult value;
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const char * name;
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};
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#undef ERROR
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#define ERROR(key, val) {key, #key}
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const ErrorEntry errors[] = {
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#include "ErrorList.h"
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};
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#undef ERROR
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} // unnamed namespace
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namespace mozilla {
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void
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GetErrorName(nsresult rv, nsACString& name)
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{
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for (size_t i = 0; i < ArrayLength(errors); ++i) {
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if (errors[i].value == rv) {
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name.AssignASCII(errors[i].name);
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return;
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}
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}
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bool isSecurityError = NS_ERROR_GET_MODULE(rv) == NS_ERROR_MODULE_SECURITY;
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// NS_ERROR_MODULE_SECURITY is the only module that is "allowed" to
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// synthesize nsresult error codes that are not listed in ErrorList.h. (The
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// NS_ERROR_MODULE_SECURITY error codes are synthesized from NSPR error
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// codes.)
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MOZ_ASSERT(isSecurityError);
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name.AssignASCII(NS_SUCCEEDED(rv) ? "NS_ERROR_GENERATE_SUCCESS("
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: "NS_ERROR_GENERATE_FAILURE(");
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if (isSecurityError) {
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name.AppendASCII("NS_ERROR_MODULE_SECURITY");
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} else {
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// This should never happen given the assertion above, so we don't bother
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// trying to print a symbolic name for the module here.
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name.AppendInt(NS_ERROR_GET_MODULE(rv));
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}
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name.AppendASCII(", ");
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const char * nsprName = nullptr;
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if (isSecurityError) {
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// Invert the logic from NSSErrorsService::GetXPCOMFromNSSError
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PRErrorCode nsprCode
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= -1 * static_cast<PRErrorCode>(NS_ERROR_GET_CODE(rv));
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nsprName = PR_ErrorToName(nsprCode);
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// All NSPR error codes defined by NSPR or NSS should have a name mapping.
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MOZ_ASSERT(nsprName);
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}
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if (nsprName) {
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name.AppendASCII(nsprName);
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} else {
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name.AppendInt(NS_ERROR_GET_CODE(rv));
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}
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name.AppendASCII(")");
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}
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} // namespace mozilla
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