Quelle ErrorNames.cpp Sprache: C

/* -*- 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);
}
}

quality100%

¤ Dauer der Verarbeitung: 0.13 Sekunden (vorverarbeitet) ¤

Wurzel

Suchen

Beweissystem der NASA

Beweissystem Isabelle

NIST Cobol Testsuite

Cephes Mathematical Library

Wiener Entwicklungsmethode

Haftungshinweis

Die Informationen auf dieser Webseite wurden nach bestem Wissen sorgfältig zusammengestellt. Es wird jedoch weder Vollständigkeit, noch Richtigkeit, noch Qualität der bereit gestellten Informationen zugesichert.

Bemerkung:

Die farbliche Syntaxdarstellung ist noch experimentell.