Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 1406 insertions, 0 deletions

diff --git a/xpcom/base/ErrorList.py b/xpcom/base/ErrorList.py
new file mode 100755
index 0000000000..68059c8898
--- /dev/null
+++ b/xpcom/base/ErrorList.py
@@ -0,0 +1,1406 @@
+#!/usr/bin/env python
+from collections import OrderedDict
+
+
+class Mod:
+    """
+    A nserror module. When used with a `with` statement, binds the itself to
+    Mod.active.
+    """
+
+    active = None
+
+    def __init__(self, num):
+        self.num = num
+
+    def __enter__(self):
+        Mod.active = self
+
+    def __exit__(self, _type, _value, _traceback):
+        Mod.active = None
+
+
+modules = OrderedDict()
+
+# To add error code to your module, you need to do the following:
+#
+# 1) Add a module offset code.  Add yours to the bottom of the list
+# right below this comment, adding 1.
+#
+# 2) In your module, define a header file which uses one of the
+# NE_ERROR_GENERATExxxxxx macros.  Some examples below:
+#
+#    #define NS_ERROR_MYMODULE_MYERROR1 \
+#        NS_ERROR_GENERATE(NS_ERROR_SEVERITY_ERROR,NS_ERROR_MODULE_MYMODULE,1)
+#    #define NS_ERROR_MYMODULE_MYERROR2 NS_ERROR_GENERATE_SUCCESS(NS_ERROR_MODULE_MYMODULE,2)
+#    #define NS_ERROR_MYMODULE_MYERROR3 NS_ERROR_GENERATE_FAILURE(NS_ERROR_MODULE_MYMODULE,3)
+
+# @name Standard Module Offset Code. Each Module should identify a unique number
+#       and then all errors associated with that module become offsets from the
+#       base associated with that module id. There are 16 bits of code bits for
+#       each module.
+
+modules["XPCOM"] = Mod(1)
+modules["BASE"] = Mod(2)
+modules["GFX"] = Mod(3)
+modules["WIDGET"] = Mod(4)
+modules["CALENDAR"] = Mod(5)
+modules["NETWORK"] = Mod(6)
+modules["PLUGINS"] = Mod(7)
+modules["LAYOUT"] = Mod(8)
+modules["HTMLPARSER"] = Mod(9)
+modules["RDF"] = Mod(10)
+modules["UCONV"] = Mod(11)
+modules["REG"] = Mod(12)
+modules["FILES"] = Mod(13)
+modules["DOM"] = Mod(14)
+modules["IMGLIB"] = Mod(15)
+modules["MAILNEWS"] = Mod(16)
+modules["EDITOR"] = Mod(17)
+modules["XPCONNECT"] = Mod(18)
+modules["PROFILE"] = Mod(19)
+modules["LDAP"] = Mod(20)
+modules["SECURITY"] = Mod(21)
+modules["DOM_XPATH"] = Mod(22)
+# Mod(23) used to be NS_ERROR_MODULE_DOM_RANGE (see bug 711047)
+modules["URILOADER"] = Mod(24)
+modules["CONTENT"] = Mod(25)
+modules["PYXPCOM"] = Mod(26)
+modules["XSLT"] = Mod(27)
+modules["IPC"] = Mod(28)
+modules["SVG"] = Mod(29)
+modules["STORAGE"] = Mod(30)
+modules["SCHEMA"] = Mod(31)
+modules["DOM_FILE"] = Mod(32)
+modules["DOM_INDEXEDDB"] = Mod(33)
+modules["DOM_FILEHANDLE"] = Mod(34)
+modules["SIGNED_JAR"] = Mod(35)
+modules["DOM_FILESYSTEM"] = Mod(36)
+modules["DOM_BLUETOOTH"] = Mod(37)
+modules["SIGNED_APP"] = Mod(38)
+modules["DOM_ANIM"] = Mod(39)
+modules["DOM_PUSH"] = Mod(40)
+modules["DOM_MEDIA"] = Mod(41)
+modules["URL_CLASSIFIER"] = Mod(42)
+# ErrorResult gets its own module to reduce the chance of someone accidentally
+# defining an error code matching one of the ErrorResult ones.
+modules["ERRORRESULT"] = Mod(43)
+# Win32 system error codes, which are not mapped to a specific other value,
+# see Bug 1686041.
+modules["WIN32"] = Mod(44)
+
+# NS_ERROR_MODULE_GENERAL should be used by modules that do not
+# care if return code values overlap. Callers of methods that
+# return such codes should be aware that they are not
+# globally unique. Implementors should be careful about blindly
+# returning codes from other modules that might also use
+# the generic base.
+modules["GENERAL"] = Mod(51)
+
+MODULE_BASE_OFFSET = 0x45
+
+NS_ERROR_SEVERITY_SUCCESS = 0
+NS_ERROR_SEVERITY_ERROR = 1
+
+
+def SUCCESS_OR_FAILURE(sev, module, code):
+    return (sev << 31) | ((module + MODULE_BASE_OFFSET) << 16) | code
+
+
+def FAILURE(code):
+    return SUCCESS_OR_FAILURE(NS_ERROR_SEVERITY_ERROR, Mod.active.num, code)
+
+
+def SUCCESS(code):
+    return SUCCESS_OR_FAILURE(NS_ERROR_SEVERITY_SUCCESS, Mod.active.num, code)
+
+
+# Errors is an ordered dictionary, so that we can recover the order in which
+# they were defined. This is important for determining which name is the
+# canonical name for an error code.
+errors = OrderedDict()
+
+# Standard "it worked" return value
+errors["NS_OK"] = 0
+
+# =======================================================================
+# Core errors, not part of any modules
+# =======================================================================
+errors["NS_ERROR_BASE"] = 0xC1F30000
+# Returned when an instance is not initialized
+errors["NS_ERROR_NOT_INITIALIZED"] = errors["NS_ERROR_BASE"] + 1
+# Returned when an instance is already initialized
+errors["NS_ERROR_ALREADY_INITIALIZED"] = errors["NS_ERROR_BASE"] + 2
+# Returned by a not implemented function
+errors["NS_ERROR_NOT_IMPLEMENTED"] = 0x80004001
+# Returned when a given interface is not supported.
+errors["NS_NOINTERFACE"] = 0x80004002
+errors["NS_ERROR_NO_INTERFACE"] = errors["NS_NOINTERFACE"]
+# Returned when a function aborts
+errors["NS_ERROR_ABORT"] = 0x80004004
+# Returned when a function fails
+errors["NS_ERROR_FAILURE"] = 0x80004005
+# Returned when an unexpected error occurs
+errors["NS_ERROR_UNEXPECTED"] = 0x8000FFFF
+# Returned when a memory allocation fails
+errors["NS_ERROR_OUT_OF_MEMORY"] = 0x8007000E
+# Returned when an illegal value is passed
+errors["NS_ERROR_ILLEGAL_VALUE"] = 0x80070057
+errors["NS_ERROR_INVALID_ARG"] = errors["NS_ERROR_ILLEGAL_VALUE"]
+errors["NS_ERROR_INVALID_POINTER"] = errors["NS_ERROR_INVALID_ARG"]
+errors["NS_ERROR_NULL_POINTER"] = errors["NS_ERROR_INVALID_ARG"]
+# Returned when an operation can't complete due to an unavailable resource
+errors["NS_ERROR_NOT_AVAILABLE"] = 0x80040111
+# Returned when a class is not registered
+errors["NS_ERROR_FACTORY_NOT_REGISTERED"] = 0x80040154
+# Returned when a class cannot be registered, but may be tried again later
+errors["NS_ERROR_FACTORY_REGISTER_AGAIN"] = 0x80040155
+# Returned when a dynamically loaded factory couldn't be found
+errors["NS_ERROR_FACTORY_NOT_LOADED"] = 0x800401F8
+# Returned when a factory doesn't support signatures
+errors["NS_ERROR_FACTORY_NO_SIGNATURE_SUPPORT"] = errors["NS_ERROR_BASE"] + 0x101
+# Returned when a factory already is registered
+errors["NS_ERROR_FACTORY_EXISTS"] = errors["NS_ERROR_BASE"] + 0x100
+
+
+# =======================================================================
+# 1: NS_ERROR_MODULE_XPCOM
+# =======================================================================
+with modules["XPCOM"]:
+    # Result codes used by nsIVariant
+    errors["NS_ERROR_CANNOT_CONVERT_DATA"] = FAILURE(1)
+    errors["NS_ERROR_OBJECT_IS_IMMUTABLE"] = FAILURE(2)
+    errors["NS_ERROR_LOSS_OF_SIGNIFICANT_DATA"] = FAILURE(3)
+    # Result code used by nsIThreadManager
+    errors["NS_ERROR_NOT_SAME_THREAD"] = FAILURE(4)
+    # Various operations are not permitted during XPCOM shutdown and will fail
+    # with this exception.
+    errors["NS_ERROR_ILLEGAL_DURING_SHUTDOWN"] = FAILURE(30)
+    errors["NS_ERROR_SERVICE_NOT_AVAILABLE"] = FAILURE(22)
+
+    errors["NS_SUCCESS_LOSS_OF_INSIGNIFICANT_DATA"] = SUCCESS(1)
+    # Used by nsCycleCollectionParticipant
+    errors["NS_SUCCESS_INTERRUPTED_TRAVERSE"] = SUCCESS(2)
+
+# =======================================================================
+# 2: NS_ERROR_MODULE_BASE
+# =======================================================================
+with modules["BASE"]:
+    # I/O Errors
+
+    #  Stream closed
+    errors["NS_BASE_STREAM_CLOSED"] = FAILURE(2)
+    #  Error from the operating system
+    errors["NS_BASE_STREAM_OSERROR"] = FAILURE(3)
+    #  Illegal arguments
+    errors["NS_BASE_STREAM_ILLEGAL_ARGS"] = FAILURE(4)
+    #  For unichar streams
+    errors["NS_BASE_STREAM_NO_CONVERTER"] = FAILURE(5)
+    #  For unichar streams
+    errors["NS_BASE_STREAM_BAD_CONVERSION"] = FAILURE(6)
+    errors["NS_BASE_STREAM_WOULD_BLOCK"] = FAILURE(7)
+
+
+# =======================================================================
+# 3: NS_ERROR_MODULE_GFX
+# =======================================================================
+with modules["GFX"]:
+    # no printer available (e.g. cannot find _any_ printer)
+    errors["NS_ERROR_GFX_PRINTER_NO_PRINTER_AVAILABLE"] = FAILURE(1)
+    # _specified_ (by name) printer not found
+    errors["NS_ERROR_GFX_PRINTER_NAME_NOT_FOUND"] = FAILURE(2)
+    # print-to-file: could not open output file
+    errors["NS_ERROR_GFX_PRINTER_COULD_NOT_OPEN_FILE"] = FAILURE(3)
+    # print: starting document
+    errors["NS_ERROR_GFX_PRINTER_STARTDOC"] = FAILURE(4)
+    # print: ending document
+    errors["NS_ERROR_GFX_PRINTER_ENDDOC"] = FAILURE(5)
+    # print: starting page
+    errors["NS_ERROR_GFX_PRINTER_STARTPAGE"] = FAILURE(6)
+    # The document is still being loaded
+    errors["NS_ERROR_GFX_PRINTER_DOC_IS_BUSY"] = FAILURE(7)
+
+    # Font cmap is strangely structured - avoid this font!
+    errors["NS_ERROR_GFX_CMAP_MALFORMED"] = FAILURE(51)
+
+
+# =======================================================================
+# 4:  NS_ERROR_MODULE_WIDGET
+# =======================================================================
+with modules["WIDGET"]:
+    # Used by:
+    #   - nsIWidget::NotifyIME()
+    # Returned when the notification or the event is handled and it's consumed
+    # by somebody.
+    errors["NS_SUCCESS_EVENT_CONSUMED"] = SUCCESS(1)
+
+
+# =======================================================================
+# 6: NS_ERROR_MODULE_NETWORK
+# =======================================================================
+with modules["NETWORK"]:
+    # General async request error codes:
+    #
+    # These error codes are commonly passed through callback methods to indicate
+    # the status of some requested async request.
+    #
+    # For example, see nsIRequestObserver::onStopRequest.
+
+    # The async request completed successfully.
+    errors["NS_BINDING_SUCCEEDED"] = errors["NS_OK"]
+
+    # The async request failed for some unknown reason.
+    errors["NS_BINDING_FAILED"] = FAILURE(1)
+    # The async request failed because it was aborted by some user action.
+    errors["NS_BINDING_ABORTED"] = FAILURE(2)
+    # The async request has been "redirected" to a different async request.
+    # (e.g., an HTTP redirect occurred).
+    #
+    # This error code is used with load groups to notify the load group observer
+    # when a request in the load group is redirected to another request.
+    errors["NS_BINDING_REDIRECTED"] = FAILURE(3)
+    # The async request has been "retargeted" to a different "handler."
+    #
+    # This error code is used with load groups to notify the load group observer
+    # when a request in the load group is removed from the load group and added
+    # to a different load group.
+    errors["NS_BINDING_RETARGETED"] = FAILURE(4)
+
+    # Miscellaneous error codes: These errors are not typically passed via
+    # onStopRequest.
+
+    # The URI is malformed.
+    errors["NS_ERROR_MALFORMED_URI"] = FAILURE(10)
+    # The requested action could not be completed while the object is busy.
+    # Implementations of nsIChannel::asyncOpen will commonly return this error
+    # if the channel has already been opened (and has not yet been closed).
+    errors["NS_ERROR_IN_PROGRESS"] = FAILURE(15)
+    # Returned from nsIChannel::asyncOpen to indicate that OnDataAvailable will
+    # not be called because there is no content available.  This is used by
+    # helper app style protocols (e.g., mailto).  XXX perhaps this should be a
+    # success code.
+    errors["NS_ERROR_NO_CONTENT"] = FAILURE(17)
+    # The URI scheme corresponds to an unknown protocol handler.
+    errors["NS_ERROR_UNKNOWN_PROTOCOL"] = FAILURE(18)
+    # The content encoding of the source document was incorrect, for example
+    # returning a plain HTML document advertised as Content-Encoding: gzip
+    errors["NS_ERROR_INVALID_CONTENT_ENCODING"] = FAILURE(27)
+    # A transport level corruption was found in the source document. for example
+    # a document with a calculated checksum that does not match the Content-MD5
+    # http header.
+    errors["NS_ERROR_CORRUPTED_CONTENT"] = FAILURE(29)
+    # A content signature verification failed for some reason. This can be either
+    # an actual verification error, or any other error that led to the fact that
+    # a content signature that was expected couldn't be verified.
+    errors["NS_ERROR_INVALID_SIGNATURE"] = FAILURE(58)
+    # While parsing for the first component of a header field using syntax as in
+    # Content-Disposition or Content-Type, the first component was found to be
+    # empty, such as in: Content-Disposition: ; filename=foo
+    errors["NS_ERROR_FIRST_HEADER_FIELD_COMPONENT_EMPTY"] = FAILURE(34)
+    # Returned from nsIChannel::asyncOpen when trying to open the channel again
+    # (reopening is not supported).
+    errors["NS_ERROR_ALREADY_OPENED"] = FAILURE(73)
+
+    # Connectivity error codes:
+
+    # The connection is already established.  XXX unused - consider removing.
+    errors["NS_ERROR_ALREADY_CONNECTED"] = FAILURE(11)
+    # The connection does not exist.  XXX unused - consider removing.
+    errors["NS_ERROR_NOT_CONNECTED"] = FAILURE(12)
+    # The connection attempt failed, for example, because no server was
+    # listening at specified host:port.
+    errors["NS_ERROR_CONNECTION_REFUSED"] = FAILURE(13)
+    # The connection was lost due to a timeout error.
+    errors["NS_ERROR_NET_TIMEOUT"] = FAILURE(14)
+    # The requested action could not be completed while the networking library
+    # is in the offline state.
+    errors["NS_ERROR_OFFLINE"] = FAILURE(16)
+    # The requested action was prohibited because it would have caused the
+    # networking library to establish a connection to an unsafe or otherwise
+    # banned port.
+    errors["NS_ERROR_PORT_ACCESS_NOT_ALLOWED"] = FAILURE(19)
+    # The connection was established, but no data was ever received.
+    errors["NS_ERROR_NET_RESET"] = FAILURE(20)
+    # The connection was established, but the data transfer was interrupted.
+    errors["NS_ERROR_NET_INTERRUPT"] = FAILURE(71)
+    # The connection attempt to a proxy failed.
+    errors["NS_ERROR_PROXY_CONNECTION_REFUSED"] = FAILURE(72)
+    # A transfer was only partially done when it completed.
+    errors["NS_ERROR_NET_PARTIAL_TRANSFER"] = FAILURE(76)
+    # HTTP/2 detected invalid TLS configuration
+    errors["NS_ERROR_NET_INADEQUATE_SECURITY"] = FAILURE(82)
+    # HTTP/2 sent a GOAWAY
+    errors["NS_ERROR_NET_HTTP2_SENT_GOAWAY"] = FAILURE(83)
+    # HTTP/3 protocol internal error
+    errors["NS_ERROR_NET_HTTP3_PROTOCOL_ERROR"] = FAILURE(84)
+    # A timeout error code that can be used to cancel requests.
+    errors["NS_ERROR_NET_TIMEOUT_EXTERNAL"] = FAILURE(85)
+    # An error related to HTTPS-only mode
+    errors["NS_ERROR_HTTPS_ONLY"] = FAILURE(86)
+    # A WebSocket connection is failed.
+    errors["NS_ERROR_WEBSOCKET_CONNECTION_REFUSED"] = FAILURE(87)
+    # A connection to a non local address is refused because
+    # xpc::AreNonLocalConnectionsDisabled() returns true.
+    errors["NS_ERROR_NON_LOCAL_CONNECTION_REFUSED"] = FAILURE(88)
+    # Connection to a sts host without a hsts header.
+    errors["NS_ERROR_BAD_HSTS_CERT"] = FAILURE(89)
+
+    # XXX really need to better rationalize these error codes.  are consumers of
+    # necko really expected to know how to discern the meaning of these??
+    # This request is not resumable, but it was tried to resume it, or to
+    # request resume-specific data.
+    errors["NS_ERROR_NOT_RESUMABLE"] = FAILURE(25)
+    # The request failed as a result of a detected redirection loop.
+    errors["NS_ERROR_REDIRECT_LOOP"] = FAILURE(31)
+    # It was attempted to resume the request, but the entity has changed in the
+    # meantime.
+    errors["NS_ERROR_ENTITY_CHANGED"] = FAILURE(32)
+    # The request failed because the content type returned by the server was not
+    # a type expected by the channel (for nested channels such as the JAR
+    # channel).
+    errors["NS_ERROR_UNSAFE_CONTENT_TYPE"] = FAILURE(74)
+    # The request resulted in an error page being displayed.
+    errors["NS_ERROR_LOAD_SHOWED_ERRORPAGE"] = FAILURE(77)
+    # The request occurred in docshell that lacks a treeowner, so it is
+    # probably in the process of being torn down.
+    errors["NS_ERROR_DOCSHELL_DYING"] = FAILURE(78)
+
+    # DNS specific error codes:
+
+    # The lookup of a hostname failed.  This generally refers to the hostname
+    # from the URL being loaded.
+    errors["NS_ERROR_UNKNOWN_HOST"] = FAILURE(30)
+    # A low or medium priority DNS lookup failed because the pending queue was
+    # already full. High priorty (the default) always makes room
+    errors["NS_ERROR_DNS_LOOKUP_QUEUE_FULL"] = FAILURE(33)
+    # The lookup of a proxy hostname failed.  If a channel is configured to
+    # speak to a proxy server, then it will generate this error if the proxy
+    # hostname cannot be resolved.
+    errors["NS_ERROR_UNKNOWN_PROXY_HOST"] = FAILURE(42)
+    # This DNS error will occur when the resolver uses the Extended DNS Error
+    # option to indicate an error code for which we should not fall back to the
+    # default DNS resolver. This means the DNS failure is definitive.
+    errors["NS_ERROR_DEFINITIVE_UNKNOWN_HOST"] = FAILURE(43)
+
+    # Socket specific error codes:
+
+    # The specified socket type does not exist.
+    errors["NS_ERROR_UNKNOWN_SOCKET_TYPE"] = FAILURE(51)
+    # The specified socket type could not be created.
+    errors["NS_ERROR_SOCKET_CREATE_FAILED"] = FAILURE(52)
+    # The operating system doesn't support the given type of address.
+    errors["NS_ERROR_SOCKET_ADDRESS_NOT_SUPPORTED"] = FAILURE(53)
+    # The address to which we tried to bind the socket was busy.
+    errors["NS_ERROR_SOCKET_ADDRESS_IN_USE"] = FAILURE(54)
+
+    # Cache specific error codes:
+    errors["NS_ERROR_CACHE_KEY_NOT_FOUND"] = FAILURE(61)
+    errors["NS_ERROR_CACHE_DATA_IS_STREAM"] = FAILURE(62)
+    errors["NS_ERROR_CACHE_DATA_IS_NOT_STREAM"] = FAILURE(63)
+    errors["NS_ERROR_CACHE_WAIT_FOR_VALIDATION"] = FAILURE(64)
+    errors["NS_ERROR_CACHE_ENTRY_DOOMED"] = FAILURE(65)
+    errors["NS_ERROR_CACHE_READ_ACCESS_DENIED"] = FAILURE(66)
+    errors["NS_ERROR_CACHE_WRITE_ACCESS_DENIED"] = FAILURE(67)
+    errors["NS_ERROR_CACHE_IN_USE"] = FAILURE(68)
+    # Error passed through onStopRequest if the document could not be fetched
+    # from the cache.
+    errors["NS_ERROR_DOCUMENT_NOT_CACHED"] = FAILURE(70)
+
+    # Effective TLD Service specific error codes:
+
+    # The requested number of domain levels exceeds those present in the host
+    # string.
+    errors["NS_ERROR_INSUFFICIENT_DOMAIN_LEVELS"] = FAILURE(80)
+    # The host string is an IP address.
+    errors["NS_ERROR_HOST_IS_IP_ADDRESS"] = FAILURE(81)
+
+    # StreamLoader specific result codes:
+
+    # Result code returned by nsIStreamLoaderObserver to indicate that the
+    # observer is taking over responsibility for the data buffer, and the loader
+    # should NOT free it.
+    errors["NS_SUCCESS_ADOPTED_DATA"] = SUCCESS(90)
+
+    # This success code may be returned by nsIAuthModule::getNextToken to
+    # indicate that the authentication is finished and thus there's no need
+    # to call getNextToken again.
+    errors["NS_SUCCESS_AUTH_FINISHED"] = SUCCESS(40)
+
+    # These are really not "results", they're statuses, used by nsITransport and
+    # friends.  This is abuse of nsresult, but we'll put up with it for now.
+    # nsITransport
+    errors["NS_NET_STATUS_READING"] = SUCCESS(8)
+    errors["NS_NET_STATUS_WRITING"] = SUCCESS(9)
+
+    # nsISocketTransport
+    errors["NS_NET_STATUS_RESOLVING_HOST"] = SUCCESS(3)
+    errors["NS_NET_STATUS_RESOLVED_HOST"] = SUCCESS(11)
+    errors["NS_NET_STATUS_CONNECTING_TO"] = SUCCESS(7)
+    errors["NS_NET_STATUS_CONNECTED_TO"] = SUCCESS(4)
+    errors["NS_NET_STATUS_TLS_HANDSHAKE_STARTING"] = SUCCESS(12)
+    errors["NS_NET_STATUS_TLS_HANDSHAKE_ENDED"] = SUCCESS(13)
+    errors["NS_NET_STATUS_SENDING_TO"] = SUCCESS(5)
+    errors["NS_NET_STATUS_WAITING_FOR"] = SUCCESS(10)
+    errors["NS_NET_STATUS_RECEIVING_FROM"] = SUCCESS(6)
+
+    # nsIInterceptedChannel
+    # Generic error for non-specific failures during service worker interception
+    errors["NS_ERROR_INTERCEPTION_FAILED"] = FAILURE(100)
+
+    errors["NS_ERROR_WEBTRANSPORT_CODE_BASE"] = FAILURE(200)
+    errors["NS_ERROR_WEBTRANSPORT_CODE_END"] = (
+        errors["NS_ERROR_WEBTRANSPORT_CODE_BASE"] + 255
+    )
+
+    # All Http proxy CONNECT response codes
+    errors["NS_ERROR_PROXY_CODE_BASE"] = FAILURE(1000)
+    # Redirection 3xx
+    errors["NS_ERROR_PROXY_MULTIPLE_CHOICES"] = errors["NS_ERROR_PROXY_CODE_BASE"] + 300
+    errors["NS_ERROR_PROXY_MOVED_PERMANENTLY"] = (
+        errors["NS_ERROR_PROXY_CODE_BASE"] + 301
+    )
+    errors["NS_ERROR_PROXY_FOUND"] = errors["NS_ERROR_PROXY_CODE_BASE"] + 302
+    errors["NS_ERROR_PROXY_SEE_OTHER"] = errors["NS_ERROR_PROXY_CODE_BASE"] + 303
+    errors["NS_ERROR_PROXY_NOT_MODIFIED"] = errors["NS_ERROR_PROXY_CODE_BASE"] + 304
+    errors["NS_ERROR_PROXY_TEMPORARY_REDIRECT"] = (
+        errors["NS_ERROR_PROXY_CODE_BASE"] + 307
+    )
+    errors["NS_ERROR_PROXY_PERMANENT_REDIRECT"] = (
+        errors["NS_ERROR_PROXY_CODE_BASE"] + 308
+    )
+
+    # Client error 4xx
+    errors["NS_ERROR_PROXY_BAD_REQUEST"] = errors["NS_ERROR_PROXY_CODE_BASE"] + 400
+    errors["NS_ERROR_PROXY_UNAUTHORIZED"] = errors["NS_ERROR_PROXY_CODE_BASE"] + 401
+    errors["NS_ERROR_PROXY_PAYMENT_REQUIRED"] = errors["NS_ERROR_PROXY_CODE_BASE"] + 402
+    errors["NS_ERROR_PROXY_FORBIDDEN"] = errors["NS_ERROR_PROXY_CODE_BASE"] + 403
+    errors["NS_ERROR_PROXY_NOT_FOUND"] = errors["NS_ERROR_PROXY_CODE_BASE"] + 404
+    errors["NS_ERROR_PROXY_METHOD_NOT_ALLOWED"] = (
+        errors["NS_ERROR_PROXY_CODE_BASE"] + 405
+    )
+    errors["NS_ERROR_PROXY_NOT_ACCEPTABLE"] = errors["NS_ERROR_PROXY_CODE_BASE"] + 406
+    # The proxy requires authentication; used when we can't easily propagate 407s.
+    errors["NS_ERROR_PROXY_AUTHENTICATION_FAILED"] = (
+        errors["NS_ERROR_PROXY_CODE_BASE"] + 407
+    )
+    errors["NS_ERROR_PROXY_REQUEST_TIMEOUT"] = errors["NS_ERROR_PROXY_CODE_BASE"] + 408
+    errors["NS_ERROR_PROXY_CONFLICT"] = errors["NS_ERROR_PROXY_CODE_BASE"] + 409
+    errors["NS_ERROR_PROXY_GONE"] = errors["NS_ERROR_PROXY_CODE_BASE"] + 410
+    errors["NS_ERROR_PROXY_LENGTH_REQUIRED"] = errors["NS_ERROR_PROXY_CODE_BASE"] + 411
+    errors["NS_ERROR_PROXY_PRECONDITION_FAILED"] = (
+        errors["NS_ERROR_PROXY_CODE_BASE"] + 412
+    )
+    errors["NS_ERROR_PROXY_REQUEST_ENTITY_TOO_LARGE"] = (
+        errors["NS_ERROR_PROXY_CODE_BASE"] + 413
+    )
+    errors["NS_ERROR_PROXY_REQUEST_URI_TOO_LONG"] = (
+        errors["NS_ERROR_PROXY_CODE_BASE"] + 414
+    )
+    errors["NS_ERROR_PROXY_UNSUPPORTED_MEDIA_TYPE"] = (
+        errors["NS_ERROR_PROXY_CODE_BASE"] + 415
+    )
+    errors["NS_ERROR_PROXY_REQUESTED_RANGE_NOT_SATISFIABLE"] = (
+        errors["NS_ERROR_PROXY_CODE_BASE"] + 416
+    )
+    errors["NS_ERROR_PROXY_EXPECTATION_FAILED"] = (
+        errors["NS_ERROR_PROXY_CODE_BASE"] + 417
+    )
+    errors["NS_ERROR_PROXY_MISDIRECTED_REQUEST"] = (
+        errors["NS_ERROR_PROXY_CODE_BASE"] + 421
+    )
+    errors["NS_ERROR_PROXY_TOO_EARLY"] = errors["NS_ERROR_PROXY_CODE_BASE"] + 425
+    errors["NS_ERROR_PROXY_UPGRADE_REQUIRED"] = errors["NS_ERROR_PROXY_CODE_BASE"] + 426
+    errors["NS_ERROR_PROXY_PRECONDITION_REQUIRED"] = (
+        errors["NS_ERROR_PROXY_CODE_BASE"] + 428
+    )
+    # Indicates that we have sent too many requests in a given amount of time.
+    errors["NS_ERROR_PROXY_TOO_MANY_REQUESTS"] = (
+        errors["NS_ERROR_PROXY_CODE_BASE"] + 429
+    )
+    errors["NS_ERROR_PROXY_REQUEST_HEADER_FIELDS_TOO_LARGE"] = (
+        errors["NS_ERROR_PROXY_CODE_BASE"] + 431
+    )
+    errors["NS_ERROR_PROXY_UNAVAILABLE_FOR_LEGAL_REASONS"] = (
+        errors["NS_ERROR_PROXY_CODE_BASE"] + 451
+    )
+
+    # Server error 5xx
+    errors["NS_ERROR_PROXY_INTERNAL_SERVER_ERROR"] = (
+        errors["NS_ERROR_PROXY_CODE_BASE"] + 500
+    )
+    errors["NS_ERROR_PROXY_NOT_IMPLEMENTED"] = errors["NS_ERROR_PROXY_CODE_BASE"] + 501
+    errors["NS_ERROR_PROXY_BAD_GATEWAY"] = errors["NS_ERROR_PROXY_CODE_BASE"] + 502
+    errors["NS_ERROR_PROXY_SERVICE_UNAVAILABLE"] = (
+        errors["NS_ERROR_PROXY_CODE_BASE"] + 503
+    )
+    # The proxy did get any response from the remote server in time.
+    errors["NS_ERROR_PROXY_GATEWAY_TIMEOUT"] = errors["NS_ERROR_PROXY_CODE_BASE"] + 504
+    errors["NS_ERROR_PROXY_VERSION_NOT_SUPPORTED"] = (
+        errors["NS_ERROR_PROXY_CODE_BASE"] + 505
+    )
+    errors["NS_ERROR_PROXY_VARIANT_ALSO_NEGOTIATES"] = (
+        errors["NS_ERROR_PROXY_CODE_BASE"] + 506
+    )
+    errors["NS_ERROR_PROXY_NOT_EXTENDED"] = errors["NS_ERROR_PROXY_CODE_BASE"] + 510
+    errors["NS_ERROR_PROXY_NETWORK_AUTHENTICATION_REQUIRED"] = (
+        errors["NS_ERROR_PROXY_CODE_BASE"] + 511
+    )
+
+# =======================================================================
+# 7: NS_ERROR_MODULE_PLUGINS
+# =======================================================================
+with modules["PLUGINS"]:
+    errors["NS_ERROR_PLUGINS_PLUGINSNOTCHANGED"] = FAILURE(1000)
+    errors["NS_ERROR_PLUGIN_DISABLED"] = FAILURE(1001)
+    errors["NS_ERROR_PLUGIN_BLOCKLISTED"] = FAILURE(1002)
+    errors["NS_ERROR_PLUGIN_TIME_RANGE_NOT_SUPPORTED"] = FAILURE(1003)
+    errors["NS_ERROR_PLUGIN_CLICKTOPLAY"] = FAILURE(1004)
+
+
+# =======================================================================
+# 8: NS_ERROR_MODULE_LAYOUT
+# =======================================================================
+with modules["LAYOUT"]:
+    # Return code for SheetLoadData::VerifySheetReadyToParse
+    errors["NS_OK_PARSE_SHEET"] = SUCCESS(1)
+
+
+# =======================================================================
+# 9: NS_ERROR_MODULE_HTMLPARSER
+# =======================================================================
+with modules["HTMLPARSER"]:
+    errors["NS_ERROR_HTMLPARSER_CONTINUE"] = errors["NS_OK"]
+
+    errors["NS_ERROR_HTMLPARSER_EOF"] = FAILURE(1000)
+    errors["NS_ERROR_HTMLPARSER_UNKNOWN"] = FAILURE(1001)
+    errors["NS_ERROR_HTMLPARSER_CANTPROPAGATE"] = FAILURE(1002)
+    errors["NS_ERROR_HTMLPARSER_CONTEXTMISMATCH"] = FAILURE(1003)
+    errors["NS_ERROR_HTMLPARSER_BADFILENAME"] = FAILURE(1004)
+    errors["NS_ERROR_HTMLPARSER_BADURL"] = FAILURE(1005)
+    errors["NS_ERROR_HTMLPARSER_INVALIDPARSERCONTEXT"] = FAILURE(1006)
+    errors["NS_ERROR_HTMLPARSER_INTERRUPTED"] = FAILURE(1007)
+    errors["NS_ERROR_HTMLPARSER_BLOCK"] = FAILURE(1008)
+    errors["NS_ERROR_HTMLPARSER_BADTOKENIZER"] = FAILURE(1009)
+    errors["NS_ERROR_HTMLPARSER_BADATTRIBUTE"] = FAILURE(1010)
+    errors["NS_ERROR_HTMLPARSER_UNRESOLVEDDTD"] = FAILURE(1011)
+    errors["NS_ERROR_HTMLPARSER_MISPLACEDTABLECONTENT"] = FAILURE(1012)
+    errors["NS_ERROR_HTMLPARSER_BADDTD"] = FAILURE(1013)
+    errors["NS_ERROR_HTMLPARSER_BADCONTEXT"] = FAILURE(1014)
+    errors["NS_ERROR_HTMLPARSER_STOPPARSING"] = FAILURE(1015)
+    errors["NS_ERROR_HTMLPARSER_UNTERMINATEDSTRINGLITERAL"] = FAILURE(1016)
+    errors["NS_ERROR_HTMLPARSER_HIERARCHYTOODEEP"] = FAILURE(1017)
+    errors["NS_ERROR_HTMLPARSER_FAKE_ENDTAG"] = FAILURE(1018)
+    errors["NS_ERROR_HTMLPARSER_INVALID_COMMENT"] = FAILURE(1019)
+
+
+# =======================================================================
+# 10: NS_ERROR_MODULE_RDF
+# =======================================================================
+with modules["RDF"]:
+    # Returned from nsIRDFDataSource::Assert() and Unassert() if the assertion
+    # (or unassertion was accepted by the datasource
+    errors["NS_RDF_ASSERTION_ACCEPTED"] = errors["NS_OK"]
+    # Returned from nsIRDFDataSource::GetSource() and GetTarget() if the
+    # source/target has no value
+    errors["NS_RDF_NO_VALUE"] = SUCCESS(2)
+    # Returned from nsIRDFDataSource::Assert() and Unassert() if the assertion
+    # (or unassertion) was rejected by the datasource; i.e., the datasource was
+    # not willing to record the statement.
+    errors["NS_RDF_ASSERTION_REJECTED"] = SUCCESS(3)
+    # Return this from rdfITripleVisitor to stop cycling
+    errors["NS_RDF_STOP_VISIT"] = SUCCESS(4)
+
+
+# =======================================================================
+# 11: NS_ERROR_MODULE_UCONV
+# =======================================================================
+with modules["UCONV"]:
+    errors["NS_ERROR_UCONV_NOCONV"] = FAILURE(1)
+    errors["NS_ERROR_UDEC_ILLEGALINPUT"] = FAILURE(14)
+
+    errors["NS_OK_HAD_REPLACEMENTS"] = SUCCESS(3)
+    errors["NS_OK_UDEC_MOREINPUT"] = SUCCESS(12)
+    errors["NS_OK_UDEC_MOREOUTPUT"] = SUCCESS(13)
+    errors["NS_OK_UENC_MOREOUTPUT"] = SUCCESS(34)
+    errors["NS_ERROR_UENC_NOMAPPING"] = SUCCESS(35)
+
+    # BEGIN DEPRECATED
+    errors["NS_ERROR_ILLEGAL_INPUT"] = errors["NS_ERROR_UDEC_ILLEGALINPUT"]
+    # END DEPRECATED
+
+
+# =======================================================================
+# 13: NS_ERROR_MODULE_FILES
+# =======================================================================
+with modules["FILES"]:
+    errors["NS_ERROR_FILE_UNRECOGNIZED_PATH"] = FAILURE(1)
+    errors["NS_ERROR_FILE_UNRESOLVABLE_SYMLINK"] = FAILURE(2)
+    errors["NS_ERROR_FILE_EXECUTION_FAILED"] = FAILURE(3)
+    errors["NS_ERROR_FILE_UNKNOWN_TYPE"] = FAILURE(4)
+    errors["NS_ERROR_FILE_DESTINATION_NOT_DIR"] = FAILURE(5)
+    errors["NS_ERROR_FILE_COPY_OR_MOVE_FAILED"] = FAILURE(7)
+    errors["NS_ERROR_FILE_ALREADY_EXISTS"] = FAILURE(8)
+    errors["NS_ERROR_FILE_INVALID_PATH"] = FAILURE(9)
+    errors["NS_ERROR_FILE_CORRUPTED"] = FAILURE(11)
+    errors["NS_ERROR_FILE_NOT_DIRECTORY"] = FAILURE(12)
+    errors["NS_ERROR_FILE_IS_DIRECTORY"] = FAILURE(13)
+    errors["NS_ERROR_FILE_IS_LOCKED"] = FAILURE(14)
+    errors["NS_ERROR_FILE_TOO_BIG"] = FAILURE(15)
+    errors["NS_ERROR_FILE_NO_DEVICE_SPACE"] = FAILURE(16)
+    errors["NS_ERROR_FILE_NAME_TOO_LONG"] = FAILURE(17)
+    errors["NS_ERROR_FILE_NOT_FOUND"] = FAILURE(18)
+    errors["NS_ERROR_FILE_READ_ONLY"] = FAILURE(19)
+    errors["NS_ERROR_FILE_DIR_NOT_EMPTY"] = FAILURE(20)
+    errors["NS_ERROR_FILE_ACCESS_DENIED"] = FAILURE(21)
+    errors["NS_ERROR_FILE_FS_CORRUPTED"] = FAILURE(22)
+    errors["NS_ERROR_FILE_DEVICE_FAILURE"] = FAILURE(23)
+    errors["NS_ERROR_FILE_DEVICE_TEMPORARY_FAILURE"] = FAILURE(24)
+    errors["NS_ERROR_FILE_INVALID_HANDLE"] = FAILURE(25)
+
+    errors["NS_SUCCESS_FILE_DIRECTORY_EMPTY"] = SUCCESS(1)
+    # Result codes used by nsIDirectoryServiceProvider2
+    errors["NS_SUCCESS_AGGREGATE_RESULT"] = SUCCESS(2)
+
+
+# =======================================================================
+# 14: NS_ERROR_MODULE_DOM
+# =======================================================================
+with modules["DOM"]:
+    # XXX If you add a new DOM error code, also add an error string to
+    # dom/base/domerr.msg
+
+    # Standard DOM error codes: http://dvcs.w3.org/hg/domcore/raw-file/tip/Overview.html
+    errors["NS_ERROR_DOM_INDEX_SIZE_ERR"] = FAILURE(1)
+    errors["NS_ERROR_DOM_HIERARCHY_REQUEST_ERR"] = FAILURE(3)
+    errors["NS_ERROR_DOM_WRONG_DOCUMENT_ERR"] = FAILURE(4)
+    errors["NS_ERROR_DOM_INVALID_CHARACTER_ERR"] = FAILURE(5)
+    errors["NS_ERROR_DOM_NO_MODIFICATION_ALLOWED_ERR"] = FAILURE(7)
+    errors["NS_ERROR_DOM_NOT_FOUND_ERR"] = FAILURE(8)
+    errors["NS_ERROR_DOM_NOT_SUPPORTED_ERR"] = FAILURE(9)
+    errors["NS_ERROR_DOM_INUSE_ATTRIBUTE_ERR"] = FAILURE(10)
+    errors["NS_ERROR_DOM_INVALID_STATE_ERR"] = FAILURE(11)
+    errors["NS_ERROR_DOM_SYNTAX_ERR"] = FAILURE(12)
+    errors["NS_ERROR_DOM_INVALID_MODIFICATION_ERR"] = FAILURE(13)
+    errors["NS_ERROR_DOM_NAMESPACE_ERR"] = FAILURE(14)
+    errors["NS_ERROR_DOM_INVALID_ACCESS_ERR"] = FAILURE(15)
+    errors["NS_ERROR_DOM_TYPE_MISMATCH_ERR"] = FAILURE(17)
+    errors["NS_ERROR_DOM_SECURITY_ERR"] = FAILURE(18)
+    errors["NS_ERROR_DOM_NETWORK_ERR"] = FAILURE(19)
+    errors["NS_ERROR_DOM_ABORT_ERR"] = FAILURE(20)
+    errors["NS_ERROR_DOM_URL_MISMATCH_ERR"] = FAILURE(21)
+    errors["NS_ERROR_DOM_QUOTA_EXCEEDED_ERR"] = FAILURE(22)
+    errors["NS_ERROR_DOM_TIMEOUT_ERR"] = FAILURE(23)
+    errors["NS_ERROR_DOM_INVALID_NODE_TYPE_ERR"] = FAILURE(24)
+    errors["NS_ERROR_DOM_DATA_CLONE_ERR"] = FAILURE(25)
+    # StringEncoding API errors from http://wiki.whatwg.org/wiki/StringEncoding
+    errors["NS_ERROR_DOM_ENCODING_NOT_SUPPORTED_ERR"] = FAILURE(28)
+    # WebCrypto API errors from http://www.w3.org/TR/WebCryptoAPI/
+    errors["NS_ERROR_DOM_UNKNOWN_ERR"] = FAILURE(30)
+    errors["NS_ERROR_DOM_DATA_ERR"] = FAILURE(31)
+    errors["NS_ERROR_DOM_OPERATION_ERR"] = FAILURE(32)
+    # https://heycam.github.io/webidl/#notallowederror
+    errors["NS_ERROR_DOM_NOT_ALLOWED_ERR"] = FAILURE(33)
+    # DOM error codes defined by us
+    errors["NS_ERROR_DOM_WRONG_TYPE_ERR"] = FAILURE(1002)
+    errors["NS_ERROR_DOM_NOT_NUMBER_ERR"] = FAILURE(1005)
+    errors["NS_ERROR_DOM_PROP_ACCESS_DENIED"] = FAILURE(1010)
+    errors["NS_ERROR_DOM_XPCONNECT_ACCESS_DENIED"] = FAILURE(1011)
+    errors["NS_ERROR_DOM_BAD_URI"] = FAILURE(1012)
+    errors["NS_ERROR_DOM_RETVAL_UNDEFINED"] = FAILURE(1013)
+
+    # A way to represent uncatchable exceptions
+    errors["NS_ERROR_UNCATCHABLE_EXCEPTION"] = FAILURE(1015)
+
+    errors["NS_ERROR_DOM_MALFORMED_URI"] = FAILURE(1016)
+    errors["NS_ERROR_DOM_INVALID_HEADER_NAME"] = FAILURE(1017)
+
+    errors["NS_ERROR_DOM_INVALID_STATE_XHR_HAS_INVALID_CONTEXT"] = FAILURE(1018)
+
+    # When manipulating the bytecode cache with the JS API, some transcoding
+    # errors, such as a different bytecode format can cause failures of the
+    # decoding process.
+    errors["NS_ERROR_DOM_JS_DECODING_ERROR"] = FAILURE(1026)
+
+    # Image decode errors.
+    errors["NS_ERROR_DOM_IMAGE_INACTIVE_DOCUMENT"] = FAILURE(1027)
+    errors["NS_ERROR_DOM_IMAGE_INVALID_REQUEST"] = FAILURE(1028)
+    errors["NS_ERROR_DOM_IMAGE_BROKEN"] = FAILURE(1029)
+
+    # Used to indicate that a resource with the Cross-Origin-Resource-Policy
+    # response header set failed the origin check.
+    # https://fetch.spec.whatwg.org/#cross-origin-resource-policy-header
+    errors["NS_ERROR_DOM_CORP_FAILED"] = FAILURE(1036)
+
+    # Used to indicate that a URI may not be loaded into a cross-origin
+    # context.
+    errors["NS_ERROR_DOM_BAD_CROSS_ORIGIN_URI"] = FAILURE(1037)
+
+    # The request failed because there are too many recursive iframes or
+    # objects being loaded.
+    errors["NS_ERROR_RECURSIVE_DOCUMENT_LOAD"] = FAILURE(1038)
+
+    # WebExtension content script may not load this URL.
+    errors["NS_ERROR_DOM_WEBEXT_CONTENT_SCRIPT_URI"] = FAILURE(1039)
+
+    # Used to indicate that a resource load was blocked because of the
+    # Cross-Origin-Embedder-Policy response header.
+    # https://html.spec.whatwg.org/multipage/origin.html#coep
+    errors["NS_ERROR_DOM_COEP_FAILED"] = FAILURE(1040)
+
+    # Used to indicate that a resource load was blocked because of the
+    # Cross-Origin-Opener-Policy response header.
+    # https://html.spec.whatwg.org/multipage/origin.html#cross-origin-opener-policies
+    errors["NS_ERROR_DOM_COOP_FAILED"] = FAILURE(1041)
+
+    # May be used to indicate when e.g. setting a property value didn't
+    # actually change the value, like for obj.foo = "bar"; obj.foo = "bar";
+    # the second assignment throws NS_SUCCESS_DOM_NO_OPERATION.
+    errors["NS_SUCCESS_DOM_NO_OPERATION"] = SUCCESS(1)
+
+    # A success code that indicates that evaluating a string of JS went
+    # just fine except it threw an exception. Only for legacy use by
+    # nsJSUtils.
+    errors["NS_SUCCESS_DOM_SCRIPT_EVALUATION_THREW"] = SUCCESS(2)
+
+    # A success code that indicates that evaluating a string of JS went
+    # just fine except it was killed by an uncatchable exception.
+    # Only for legacy use by nsJSUtils.
+    errors["NS_SUCCESS_DOM_SCRIPT_EVALUATION_THREW_UNCATCHABLE"] = SUCCESS(3)
+
+
+# =======================================================================
+# 15: NS_ERROR_MODULE_IMGLIB
+# =======================================================================
+with modules["IMGLIB"]:
+    errors["NS_IMAGELIB_ERROR_FAILURE"] = FAILURE(5)
+    errors["NS_IMAGELIB_ERROR_NO_DECODER"] = FAILURE(6)
+    errors["NS_IMAGELIB_ERROR_NOT_FINISHED"] = FAILURE(7)
+    errors["NS_IMAGELIB_ERROR_NO_ENCODER"] = FAILURE(9)
+
+
+# =======================================================================
+# 17: NS_ERROR_MODULE_EDITOR
+# =======================================================================
+with modules["EDITOR"]:
+    errors["NS_ERROR_EDITOR_DESTROYED"] = FAILURE(1)
+
+    # An error code that indicates that the DOM tree has been modified by
+    # web app or add-on while the editor modifying the tree.  However,
+    # this shouldn't be exposed to the web because the result should've
+    # been expected by the web app.
+    errors["NS_ERROR_EDITOR_UNEXPECTED_DOM_TREE"] = FAILURE(2)
+
+    # An error code that indicates that the edit action canceled by
+    # clipboard event listener or beforeinput event listener.  Note that
+    # don't make this as a success code since it's not check with NS_FAILED()
+    # and may keep handling the operation unexpectedly.
+    errors["NS_ERROR_EDITOR_ACTION_CANCELED"] = FAILURE(3)
+
+    # An error code that indicates that there is no editable selection ranges.
+    # E.g., Selection has no range, caret is in non-editable element,
+    # non-collapsed range crosses editing host boundaries.
+    errors["NS_ERROR_EDITOR_NO_EDITABLE_RANGE"] = FAILURE(4)
+
+    errors["NS_SUCCESS_EDITOR_ELEMENT_NOT_FOUND"] = SUCCESS(1)
+    errors["NS_SUCCESS_EDITOR_FOUND_TARGET"] = SUCCESS(2)
+
+    # If most callers ignore error except serious error (like
+    # NS_ERROR_EDITOR_DESTROYED), this success code is useful.  E.g. such
+    # callers can do:
+    # nsresult rv = Foo();
+    # if (MOZ_UNLIKELY(NS_FAILED(rv))) {
+    #   NS_WARNING("Foo() failed");
+    #   return rv;
+    # }
+    # NS_WARNING_ASSERTION(
+    #   rv != NS_SUCCESS_EDITOR_BUT_IGNORED_TRIVIAL_ERROR,
+    #   "Foo() failed, but ignored");
+    errors["NS_SUCCESS_EDITOR_BUT_IGNORED_TRIVIAL_ERROR"] = SUCCESS(3)
+
+
+# =======================================================================
+# 18: NS_ERROR_MODULE_XPCONNECT
+# =======================================================================
+with modules["XPCONNECT"]:
+    errors["NS_ERROR_XPC_NOT_ENOUGH_ARGS"] = FAILURE(1)
+    errors["NS_ERROR_XPC_NEED_OUT_OBJECT"] = FAILURE(2)
+    errors["NS_ERROR_XPC_CANT_SET_OUT_VAL"] = FAILURE(3)
+    errors["NS_ERROR_XPC_NATIVE_RETURNED_FAILURE"] = FAILURE(4)
+    errors["NS_ERROR_XPC_CANT_GET_INTERFACE_INFO"] = FAILURE(5)
+    errors["NS_ERROR_XPC_CANT_GET_PARAM_IFACE_INFO"] = FAILURE(6)
+    errors["NS_ERROR_XPC_CANT_GET_METHOD_INFO"] = FAILURE(7)
+    errors["NS_ERROR_XPC_UNEXPECTED"] = FAILURE(8)
+    errors["NS_ERROR_XPC_BAD_CONVERT_JS"] = FAILURE(9)
+    errors["NS_ERROR_XPC_BAD_CONVERT_NATIVE"] = FAILURE(10)
+    errors["NS_ERROR_XPC_BAD_CONVERT_JS_NULL_REF"] = FAILURE(11)
+    errors["NS_ERROR_XPC_BAD_OP_ON_WN_PROTO"] = FAILURE(12)
+    errors["NS_ERROR_XPC_CANT_CONVERT_WN_TO_FUN"] = FAILURE(13)
+    errors["NS_ERROR_XPC_CANT_DEFINE_PROP_ON_WN"] = FAILURE(14)
+    errors["NS_ERROR_XPC_CANT_WATCH_WN_STATIC"] = FAILURE(15)
+    errors["NS_ERROR_XPC_CANT_EXPORT_WN_STATIC"] = FAILURE(16)
+    errors["NS_ERROR_XPC_SCRIPTABLE_CALL_FAILED"] = FAILURE(17)
+    errors["NS_ERROR_XPC_SCRIPTABLE_CTOR_FAILED"] = FAILURE(18)
+    errors["NS_ERROR_XPC_CANT_CALL_WO_SCRIPTABLE"] = FAILURE(19)
+    errors["NS_ERROR_XPC_CANT_CTOR_WO_SCRIPTABLE"] = FAILURE(20)
+    errors["NS_ERROR_XPC_CI_RETURNED_FAILURE"] = FAILURE(21)
+    errors["NS_ERROR_XPC_GS_RETURNED_FAILURE"] = FAILURE(22)
+    errors["NS_ERROR_XPC_BAD_CID"] = FAILURE(23)
+    errors["NS_ERROR_XPC_BAD_IID"] = FAILURE(24)
+    errors["NS_ERROR_XPC_CANT_CREATE_WN"] = FAILURE(25)
+    errors["NS_ERROR_XPC_JS_THREW_EXCEPTION"] = FAILURE(26)
+    errors["NS_ERROR_XPC_JS_THREW_NATIVE_OBJECT"] = FAILURE(27)
+    errors["NS_ERROR_XPC_JS_THREW_JS_OBJECT"] = FAILURE(28)
+    errors["NS_ERROR_XPC_JS_THREW_NULL"] = FAILURE(29)
+    errors["NS_ERROR_XPC_JS_THREW_STRING"] = FAILURE(30)
+    errors["NS_ERROR_XPC_JS_THREW_NUMBER"] = FAILURE(31)
+    errors["NS_ERROR_XPC_JAVASCRIPT_ERROR"] = FAILURE(32)
+    errors["NS_ERROR_XPC_JAVASCRIPT_ERROR_WITH_DETAILS"] = FAILURE(33)
+    errors["NS_ERROR_XPC_CANT_CONVERT_PRIMITIVE_TO_ARRAY"] = FAILURE(34)
+    errors["NS_ERROR_XPC_CANT_CONVERT_OBJECT_TO_ARRAY"] = FAILURE(35)
+    errors["NS_ERROR_XPC_NOT_ENOUGH_ELEMENTS_IN_ARRAY"] = FAILURE(36)
+    errors["NS_ERROR_XPC_CANT_GET_ARRAY_INFO"] = FAILURE(37)
+    errors["NS_ERROR_XPC_NOT_ENOUGH_CHARS_IN_STRING"] = FAILURE(38)
+    errors["NS_ERROR_XPC_SECURITY_MANAGER_VETO"] = FAILURE(39)
+    errors["NS_ERROR_XPC_INTERFACE_NOT_SCRIPTABLE"] = FAILURE(40)
+    errors["NS_ERROR_XPC_INTERFACE_NOT_FROM_NSISUPPORTS"] = FAILURE(41)
+    errors["NS_ERROR_XPC_CANT_SET_READ_ONLY_CONSTANT"] = FAILURE(43)
+    errors["NS_ERROR_XPC_CANT_SET_READ_ONLY_ATTRIBUTE"] = FAILURE(44)
+    errors["NS_ERROR_XPC_CANT_SET_READ_ONLY_METHOD"] = FAILURE(45)
+    errors["NS_ERROR_XPC_CANT_ADD_PROP_TO_WRAPPED_NATIVE"] = FAILURE(46)
+    errors["NS_ERROR_XPC_CALL_TO_SCRIPTABLE_FAILED"] = FAILURE(47)
+    errors["NS_ERROR_XPC_JSOBJECT_HAS_NO_FUNCTION_NAMED"] = FAILURE(48)
+    errors["NS_ERROR_XPC_BAD_ID_STRING"] = FAILURE(49)
+    errors["NS_ERROR_XPC_BAD_INITIALIZER_NAME"] = FAILURE(50)
+    errors["NS_ERROR_XPC_HAS_BEEN_SHUTDOWN"] = FAILURE(51)
+    errors["NS_ERROR_XPC_CANT_MODIFY_PROP_ON_WN"] = FAILURE(52)
+    errors["NS_ERROR_XPC_BAD_CONVERT_JS_ZERO_ISNOT_NULL"] = FAILURE(53)
+    # any new errors here should have an associated entry added in xpc.msg
+
+
+# =======================================================================
+# 19: NS_ERROR_MODULE_PROFILE
+# =======================================================================
+with modules["PROFILE"]:
+    errors["NS_ERROR_LAUNCHED_CHILD_PROCESS"] = FAILURE(200)
+    errors["NS_ERROR_SHOW_PROFILE_MANAGER"] = FAILURE(201)
+    errors["NS_ERROR_DATABASE_CHANGED"] = FAILURE(202)
+
+
+# =======================================================================
+# 21: NS_ERROR_MODULE_SECURITY
+# =======================================================================
+with modules["SECURITY"]:
+    # Error code for XFO
+    errors["NS_ERROR_XFO_VIOLATION"] = FAILURE(96)
+
+    # Error code for CSP
+    errors["NS_ERROR_CSP_NAVIGATE_TO_VIOLATION"] = FAILURE(97)
+    errors["NS_ERROR_CSP_FORM_ACTION_VIOLATION"] = FAILURE(98)
+    errors["NS_ERROR_CSP_FRAME_ANCESTOR_VIOLATION"] = FAILURE(99)
+
+    # Error code for Sub-Resource Integrity
+    errors["NS_ERROR_SRI_CORRUPT"] = FAILURE(200)
+    errors["NS_ERROR_SRI_NOT_ELIGIBLE"] = FAILURE(201)
+    errors["NS_ERROR_SRI_UNEXPECTED_HASH_TYPE"] = FAILURE(202)
+    errors["NS_ERROR_SRI_IMPORT"] = FAILURE(203)
+
+    # CMS specific nsresult error codes.  Note: the numbers used here correspond
+    # to the values in nsICMSMessageErrors.idl.
+    errors["NS_ERROR_CMS_VERIFY_NOT_SIGNED"] = FAILURE(1024)
+    errors["NS_ERROR_CMS_VERIFY_NO_CONTENT_INFO"] = FAILURE(1025)
+    errors["NS_ERROR_CMS_VERIFY_BAD_DIGEST"] = FAILURE(1026)
+    errors["NS_ERROR_CMS_VERIFY_NOCERT"] = FAILURE(1028)
+    errors["NS_ERROR_CMS_VERIFY_UNTRUSTED"] = FAILURE(1029)
+    errors["NS_ERROR_CMS_VERIFY_ERROR_UNVERIFIED"] = FAILURE(1031)
+    errors["NS_ERROR_CMS_VERIFY_ERROR_PROCESSING"] = FAILURE(1032)
+    errors["NS_ERROR_CMS_VERIFY_BAD_SIGNATURE"] = FAILURE(1033)
+    errors["NS_ERROR_CMS_VERIFY_DIGEST_MISMATCH"] = FAILURE(1034)
+    errors["NS_ERROR_CMS_VERIFY_UNKNOWN_ALGO"] = FAILURE(1035)
+    errors["NS_ERROR_CMS_VERIFY_UNSUPPORTED_ALGO"] = FAILURE(1036)
+    errors["NS_ERROR_CMS_VERIFY_MALFORMED_SIGNATURE"] = FAILURE(1037)
+    errors["NS_ERROR_CMS_VERIFY_HEADER_MISMATCH"] = FAILURE(1038)
+    errors["NS_ERROR_CMS_VERIFY_NOT_YET_ATTEMPTED"] = FAILURE(1039)
+    errors["NS_ERROR_CMS_VERIFY_CERT_WITHOUT_ADDRESS"] = FAILURE(1040)
+    errors["NS_ERROR_CMS_ENCRYPT_NO_BULK_ALG"] = FAILURE(1056)
+    errors["NS_ERROR_CMS_ENCRYPT_INCOMPLETE"] = FAILURE(1057)
+
+
+# =======================================================================
+# 24: NS_ERROR_MODULE_URILOADER
+# =======================================================================
+with modules["URILOADER"]:
+    errors["NS_ERROR_WONT_HANDLE_CONTENT"] = FAILURE(1)
+    # The load has been cancelled because it was found on a malware or phishing
+    # list.
+    errors["NS_ERROR_MALWARE_URI"] = FAILURE(30)
+    errors["NS_ERROR_PHISHING_URI"] = FAILURE(31)
+    errors["NS_ERROR_TRACKING_URI"] = FAILURE(34)
+    errors["NS_ERROR_UNWANTED_URI"] = FAILURE(35)
+    errors["NS_ERROR_BLOCKED_URI"] = FAILURE(37)
+    errors["NS_ERROR_HARMFUL_URI"] = FAILURE(38)
+    errors["NS_ERROR_FINGERPRINTING_URI"] = FAILURE(41)
+    errors["NS_ERROR_CRYPTOMINING_URI"] = FAILURE(42)
+    errors["NS_ERROR_SOCIALTRACKING_URI"] = FAILURE(43)
+    errors["NS_ERROR_EMAILTRACKING_URI"] = FAILURE(44)
+    # Used when "Save Link As..." doesn't see the headers quickly enough to
+    # choose a filename.  See nsContextMenu.js.
+    errors["NS_ERROR_SAVE_LINK_AS_TIMEOUT"] = FAILURE(32)
+    # Used when the data from a channel has already been parsed and cached so it
+    # doesn't need to be reparsed from the original source.
+    errors["NS_ERROR_PARSED_DATA_CACHED"] = FAILURE(33)
+
+    # When browser.tabs.documentchannel.parent-controlled pref and SHIP
+    # are enabled and a load gets cancelled due to another one
+    # starting, the error is NS_BINDING_CANCELLED_OLD_LOAD.
+    errors["NS_BINDING_CANCELLED_OLD_LOAD"] = FAILURE(39)
+
+
+# =======================================================================
+# 25: NS_ERROR_MODULE_CONTENT
+# =======================================================================
+with modules["CONTENT"]:
+    # Error codes for content policy blocking
+    errors["NS_ERROR_CONTENT_BLOCKED"] = FAILURE(6)
+    errors["NS_ERROR_CONTENT_BLOCKED_SHOW_ALT"] = FAILURE(7)
+    # Success variations of content policy blocking
+    errors["NS_PROPTABLE_PROP_NOT_THERE"] = FAILURE(10)
+    # Error code for when the content process crashed
+    errors["NS_ERROR_CONTENT_CRASHED"] = FAILURE(16)
+    # Error code for when a subframe process crashed
+    errors["NS_ERROR_FRAME_CRASHED"] = FAILURE(14)
+    # Error code for when the content process had a different buildID than the
+    # parent
+    errors["NS_ERROR_BUILDID_MISMATCH"] = FAILURE(17)
+
+    errors["NS_PROPTABLE_PROP_OVERWRITTEN"] = SUCCESS(11)
+    # Error codes for FindBroadcaster in XULBroadcastManager.cpp
+    errors["NS_FINDBROADCASTER_NOT_FOUND"] = SUCCESS(12)
+    errors["NS_FINDBROADCASTER_FOUND"] = SUCCESS(13)
+
+
+# =======================================================================
+# 27: NS_ERROR_MODULE_XSLT
+# =======================================================================
+with modules["XSLT"]:
+    errors["NS_ERROR_XPATH_INVALID_ARG"] = errors["NS_ERROR_INVALID_ARG"]
+
+    errors["NS_ERROR_XSLT_PARSE_FAILURE"] = FAILURE(1)
+    errors["NS_ERROR_XPATH_PARSE_FAILURE"] = FAILURE(2)
+    errors["NS_ERROR_XSLT_ALREADY_SET"] = FAILURE(3)
+    errors["NS_ERROR_XSLT_EXECUTION_FAILURE"] = FAILURE(4)
+    errors["NS_ERROR_XPATH_UNKNOWN_FUNCTION"] = FAILURE(5)
+    errors["NS_ERROR_XSLT_BAD_RECURSION"] = FAILURE(6)
+    errors["NS_ERROR_XSLT_BAD_VALUE"] = FAILURE(7)
+    errors["NS_ERROR_XSLT_NODESET_EXPECTED"] = FAILURE(8)
+    errors["NS_ERROR_XSLT_ABORTED"] = FAILURE(9)
+    errors["NS_ERROR_XSLT_NETWORK_ERROR"] = FAILURE(10)
+    errors["NS_ERROR_XSLT_WRONG_MIME_TYPE"] = FAILURE(11)
+    errors["NS_ERROR_XSLT_LOAD_RECURSION"] = FAILURE(12)
+    errors["NS_ERROR_XPATH_BAD_ARGUMENT_COUNT"] = FAILURE(13)
+    errors["NS_ERROR_XPATH_BAD_EXTENSION_FUNCTION"] = FAILURE(14)
+    errors["NS_ERROR_XPATH_PAREN_EXPECTED"] = FAILURE(15)
+    errors["NS_ERROR_XPATH_INVALID_AXIS"] = FAILURE(16)
+    errors["NS_ERROR_XPATH_NO_NODE_TYPE_TEST"] = FAILURE(17)
+    errors["NS_ERROR_XPATH_BRACKET_EXPECTED"] = FAILURE(18)
+    errors["NS_ERROR_XPATH_INVALID_VAR_NAME"] = FAILURE(19)
+    errors["NS_ERROR_XPATH_UNEXPECTED_END"] = FAILURE(20)
+    errors["NS_ERROR_XPATH_OPERATOR_EXPECTED"] = FAILURE(21)
+    errors["NS_ERROR_XPATH_UNCLOSED_LITERAL"] = FAILURE(22)
+    errors["NS_ERROR_XPATH_BAD_COLON"] = FAILURE(23)
+    errors["NS_ERROR_XPATH_BAD_BANG"] = FAILURE(24)
+    errors["NS_ERROR_XPATH_ILLEGAL_CHAR"] = FAILURE(25)
+    errors["NS_ERROR_XPATH_BINARY_EXPECTED"] = FAILURE(26)
+    errors["NS_ERROR_XSLT_LOAD_BLOCKED_ERROR"] = FAILURE(27)
+    errors["NS_ERROR_XPATH_INVALID_EXPRESSION_EVALUATED"] = FAILURE(28)
+    errors["NS_ERROR_XPATH_UNBALANCED_CURLY_BRACE"] = FAILURE(29)
+    errors["NS_ERROR_XSLT_BAD_NODE_NAME"] = FAILURE(30)
+    errors["NS_ERROR_XSLT_VAR_ALREADY_SET"] = FAILURE(31)
+    errors["NS_ERROR_XSLT_CALL_TO_KEY_NOT_ALLOWED"] = FAILURE(32)
+
+    errors["NS_XSLT_GET_NEW_HANDLER"] = SUCCESS(1)
+
+
+# =======================================================================
+# 28: NS_ERROR_MODULE_IPC
+# =======================================================================
+with modules["IPC"]:
+    # Initial creation of a Transport object failed internally for unknown reasons.
+    errors["NS_ERROR_TRANSPORT_INIT"] = FAILURE(1)
+    # Generic error related to duplicating handle failures.
+    errors["NS_ERROR_DUPLICATE_HANDLE"] = FAILURE(2)
+    # Bridging: failure trying to open the connection to the parent
+    errors["NS_ERROR_BRIDGE_OPEN_PARENT"] = FAILURE(3)
+    # Bridging: failure trying to open the connection to the child
+    errors["NS_ERROR_BRIDGE_OPEN_CHILD"] = FAILURE(4)
+
+
+# =======================================================================
+# 30: NS_ERROR_MODULE_STORAGE
+# =======================================================================
+with modules["STORAGE"]:
+    # To add additional errors to Storage, please append entries to the bottom
+    # of the list in the following format:
+    #   NS_ERROR_STORAGE_YOUR_ERR,  FAILURE(n)
+    # where n is the next unique positive integer.  You must also add an entry
+    # to js/xpconnect/src/xpc.msg under the code block beginning with the
+    # comment 'storage related codes (from mozStorage.h)', in the following
+    # format: 'XPC_MSG_DEF(NS_ERROR_STORAGE_YOUR_ERR, "brief description of your
+    # error")'
+    errors["NS_ERROR_STORAGE_BUSY"] = FAILURE(1)
+    errors["NS_ERROR_STORAGE_IOERR"] = FAILURE(2)
+    errors["NS_ERROR_STORAGE_CONSTRAINT"] = FAILURE(3)
+
+
+# =======================================================================
+# 32: NS_ERROR_MODULE_DOM_FILE
+# =======================================================================
+with modules["DOM_FILE"]:
+    errors["NS_ERROR_DOM_FILE_NOT_FOUND_ERR"] = FAILURE(0)
+    errors["NS_ERROR_DOM_FILE_NOT_READABLE_ERR"] = FAILURE(1)
+
+
+# =======================================================================
+# 33: NS_ERROR_MODULE_DOM_INDEXEDDB
+# =======================================================================
+with modules["DOM_INDEXEDDB"]:
+    # IndexedDB error codes http://dvcs.w3.org/hg/IndexedDB/raw-file/tip/Overview.html
+    errors["NS_ERROR_DOM_INDEXEDDB_UNKNOWN_ERR"] = FAILURE(1)
+    errors["NS_ERROR_DOM_INDEXEDDB_NOT_FOUND_ERR"] = FAILURE(3)
+    errors["NS_ERROR_DOM_INDEXEDDB_CONSTRAINT_ERR"] = FAILURE(4)
+    errors["NS_ERROR_DOM_INDEXEDDB_DATA_ERR"] = FAILURE(5)
+    errors["NS_ERROR_DOM_INDEXEDDB_NOT_ALLOWED_ERR"] = FAILURE(6)
+    errors["NS_ERROR_DOM_INDEXEDDB_TRANSACTION_INACTIVE_ERR"] = FAILURE(7)
+    errors["NS_ERROR_DOM_INDEXEDDB_ABORT_ERR"] = FAILURE(8)
+    errors["NS_ERROR_DOM_INDEXEDDB_READ_ONLY_ERR"] = FAILURE(9)
+    errors["NS_ERROR_DOM_INDEXEDDB_QUOTA_ERR"] = FAILURE(11)
+    errors["NS_ERROR_DOM_INDEXEDDB_VERSION_ERR"] = FAILURE(12)
+    errors["NS_ERROR_DOM_INDEXEDDB_KEY_ERR"] = FAILURE(1002)
+    errors["NS_ERROR_DOM_INDEXEDDB_RENAME_OBJECT_STORE_ERR"] = FAILURE(1003)
+    errors["NS_ERROR_DOM_INDEXEDDB_RENAME_INDEX_ERR"] = FAILURE(1004)
+
+
+# =======================================================================
+# 34: NS_ERROR_MODULE_DOM_FILEHANDLE
+# =======================================================================
+with modules["DOM_FILEHANDLE"]:
+    errors["NS_ERROR_DOM_FILEHANDLE_UNKNOWN_ERR"] = FAILURE(1)
+    errors["NS_ERROR_DOM_FILEHANDLE_NOT_ALLOWED_ERR"] = FAILURE(2)
+    errors["NS_ERROR_DOM_FILEHANDLE_INACTIVE_ERR"] = FAILURE(3)
+    errors["NS_ERROR_DOM_FILEHANDLE_ABORT_ERR"] = FAILURE(4)
+    errors["NS_ERROR_DOM_FILEHANDLE_READ_ONLY_ERR"] = FAILURE(5)
+    errors["NS_ERROR_DOM_FILEHANDLE_QUOTA_ERR"] = FAILURE(6)
+
+
+# =======================================================================
+# 35: NS_ERROR_MODULE_SIGNED_JAR
+# =======================================================================
+with modules["SIGNED_JAR"]:
+    errors["NS_ERROR_SIGNED_JAR_NOT_SIGNED"] = FAILURE(1)
+    errors["NS_ERROR_SIGNED_JAR_MODIFIED_ENTRY"] = FAILURE(2)
+    errors["NS_ERROR_SIGNED_JAR_UNSIGNED_ENTRY"] = FAILURE(3)
+    errors["NS_ERROR_SIGNED_JAR_ENTRY_MISSING"] = FAILURE(4)
+    errors["NS_ERROR_SIGNED_JAR_WRONG_SIGNATURE"] = FAILURE(5)
+    errors["NS_ERROR_SIGNED_JAR_ENTRY_TOO_LARGE"] = FAILURE(6)
+    errors["NS_ERROR_SIGNED_JAR_ENTRY_INVALID"] = FAILURE(7)
+    errors["NS_ERROR_SIGNED_JAR_MANIFEST_INVALID"] = FAILURE(8)
+
+
+# =======================================================================
+# 36: NS_ERROR_MODULE_DOM_FILESYSTEM
+# =======================================================================
+with modules["DOM_FILESYSTEM"]:
+    errors["NS_ERROR_DOM_FILESYSTEM_INVALID_PATH_ERR"] = FAILURE(1)
+    errors["NS_ERROR_DOM_FILESYSTEM_INVALID_MODIFICATION_ERR"] = FAILURE(2)
+    errors["NS_ERROR_DOM_FILESYSTEM_NO_MODIFICATION_ALLOWED_ERR"] = FAILURE(3)
+    errors["NS_ERROR_DOM_FILESYSTEM_PATH_EXISTS_ERR"] = FAILURE(4)
+    errors["NS_ERROR_DOM_FILESYSTEM_TYPE_MISMATCH_ERR"] = FAILURE(5)
+    errors["NS_ERROR_DOM_FILESYSTEM_UNKNOWN_ERR"] = FAILURE(6)
+
+
+# =======================================================================
+# 38: NS_ERROR_MODULE_SIGNED_APP
+# =======================================================================
+with modules["SIGNED_APP"]:
+    errors["NS_ERROR_SIGNED_APP_MANIFEST_INVALID"] = FAILURE(1)
+
+
+# =======================================================================
+# 40: NS_ERROR_MODULE_DOM_PUSH
+# =======================================================================
+with modules["DOM_PUSH"]:
+    errors["NS_ERROR_DOM_PUSH_DENIED_ERR"] = FAILURE(2)
+    errors["NS_ERROR_DOM_PUSH_ABORT_ERR"] = FAILURE(3)
+    errors["NS_ERROR_DOM_PUSH_SERVICE_UNREACHABLE"] = FAILURE(4)
+    errors["NS_ERROR_DOM_PUSH_INVALID_KEY_ERR"] = FAILURE(5)
+    errors["NS_ERROR_DOM_PUSH_MISMATCHED_KEY_ERR"] = FAILURE(6)
+
+
+# =======================================================================
+# 41: NS_ERROR_MODULE_DOM_MEDIA
+# =======================================================================
+with modules["DOM_MEDIA"]:
+    # HTMLMediaElement API errors from
+    # https://html.spec.whatwg.org/multipage/embedded-content.html#media-elements
+    errors["NS_ERROR_DOM_MEDIA_ABORT_ERR"] = FAILURE(1)
+    errors["NS_ERROR_DOM_MEDIA_NOT_ALLOWED_ERR"] = FAILURE(2)
+    errors["NS_ERROR_DOM_MEDIA_NOT_SUPPORTED_ERR"] = FAILURE(3)
+
+    # HTMLMediaElement internal decoding error
+    errors["NS_ERROR_DOM_MEDIA_DECODE_ERR"] = FAILURE(4)
+    errors["NS_ERROR_DOM_MEDIA_FATAL_ERR"] = FAILURE(5)
+    errors["NS_ERROR_DOM_MEDIA_METADATA_ERR"] = FAILURE(6)
+    errors["NS_ERROR_DOM_MEDIA_OVERFLOW_ERR"] = FAILURE(7)
+    errors["NS_ERROR_DOM_MEDIA_END_OF_STREAM"] = FAILURE(8)
+    errors["NS_ERROR_DOM_MEDIA_WAITING_FOR_DATA"] = FAILURE(9)
+    errors["NS_ERROR_DOM_MEDIA_CANCELED"] = FAILURE(10)
+    errors["NS_ERROR_DOM_MEDIA_MEDIASINK_ERR"] = FAILURE(11)
+    errors["NS_ERROR_DOM_MEDIA_DEMUXER_ERR"] = FAILURE(12)
+    errors["NS_ERROR_DOM_MEDIA_CDM_ERR"] = FAILURE(13)
+    errors["NS_ERROR_DOM_MEDIA_NEED_NEW_DECODER"] = FAILURE(14)
+    errors["NS_ERROR_DOM_MEDIA_INITIALIZING_DECODER"] = FAILURE(15)
+    errors["NS_ERROR_DOM_MEDIA_REMOTE_DECODER_CRASHED_RDD_OR_GPU_ERR"] = FAILURE(16)
+    errors["NS_ERROR_DOM_MEDIA_REMOTE_DECODER_CRASHED_UTILITY_ERR"] = FAILURE(17)
+    errors["NS_ERROR_DOM_MEDIA_REMOTE_DECODER_CRASHED_MF_CDM_ERR"] = FAILURE(18)
+
+    # QuotaExceededError specializations
+    errors["NS_ERROR_DOM_MEDIA_KEY_QUOTA_EXCEEDED_ERR"] = FAILURE(30)
+    errors["NS_ERROR_DOM_MEDIA_SOURCE_MAX_BUFFER_QUOTA_EXCEEDED_ERR"] = FAILURE(31)
+    errors["NS_ERROR_DOM_MEDIA_SOURCE_FULL_BUFFER_QUOTA_EXCEEDED_ERR"] = FAILURE(32)
+
+    # Internal CDM error
+    errors["NS_ERROR_DOM_MEDIA_CDM_NO_SESSION_ERR"] = FAILURE(50)
+    errors["NS_ERROR_DOM_MEDIA_CDM_SESSION_OPERATION_ERR"] = FAILURE(51)
+
+    # Internal platform-related errors
+    errors["NS_ERROR_DOM_MEDIA_CUBEB_INITIALIZATION_ERR"] = FAILURE(101)
+    errors["NS_ERROR_DOM_MEDIA_EXTERNAL_ENGINE_NOT_SUPPORTED_ERR"] = FAILURE(102)
+    errors["NS_ERROR_DOM_MEDIA_CDM_PROXY_NOT_SUPPORTED_ERR"] = FAILURE(103)
+
+# =======================================================================
+# 42: NS_ERROR_MODULE_URL_CLASSIFIER
+# =======================================================================
+with modules["URL_CLASSIFIER"]:
+    # Errors during list updates
+    errors["NS_ERROR_UC_UPDATE_UNKNOWN"] = FAILURE(1)
+    errors["NS_ERROR_UC_UPDATE_DUPLICATE_PREFIX"] = FAILURE(2)
+    errors["NS_ERROR_UC_UPDATE_INFINITE_LOOP"] = FAILURE(3)
+    errors["NS_ERROR_UC_UPDATE_WRONG_REMOVAL_INDICES"] = FAILURE(4)
+    errors["NS_ERROR_UC_UPDATE_CHECKSUM_MISMATCH"] = FAILURE(5)
+    errors["NS_ERROR_UC_UPDATE_MISSING_CHECKSUM"] = FAILURE(6)
+    errors["NS_ERROR_UC_UPDATE_SHUTDOWNING"] = FAILURE(7)
+    errors["NS_ERROR_UC_UPDATE_TABLE_NOT_FOUND"] = FAILURE(8)
+    errors["NS_ERROR_UC_UPDATE_BUILD_PREFIX_FAILURE"] = FAILURE(9)
+    errors["NS_ERROR_UC_UPDATE_FAIL_TO_WRITE_DISK"] = FAILURE(10)
+    errors["NS_ERROR_UC_UPDATE_UNEXPECTED_VERSION"] = FAILURE(11)
+
+    # Specific errors while parsing pver2/pver4 responses
+    errors["NS_ERROR_UC_PARSER_MISSING_PARAM"] = FAILURE(12)
+    errors["NS_ERROR_UC_PARSER_DECODE_FAILURE"] = FAILURE(13)
+    errors["NS_ERROR_UC_PARSER_UNKNOWN_THREAT"] = FAILURE(14)
+    errors["NS_ERROR_UC_PARSER_MISSING_VALUE"] = FAILURE(15)
+
+
+# =======================================================================
+# 43: NS_ERROR_MODULE_ERRORRESULT
+# =======================================================================
+with modules["ERRORRESULT"]:
+    # Represents a JS Value being thrown as an exception.
+    errors["NS_ERROR_INTERNAL_ERRORRESULT_JS_EXCEPTION"] = FAILURE(1)
+    # Used to indicate that we want to throw a DOMException.
+    errors["NS_ERROR_INTERNAL_ERRORRESULT_DOMEXCEPTION"] = FAILURE(2)
+    # Used to indicate that an exception is already pending on the JSContext.
+    errors["NS_ERROR_INTERNAL_ERRORRESULT_EXCEPTION_ON_JSCONTEXT"] = FAILURE(3)
+    # Used to indicate that we want to throw a TypeError.
+    errors["NS_ERROR_INTERNAL_ERRORRESULT_TYPEERROR"] = FAILURE(4)
+    # Used to indicate that we want to throw a RangeError.
+    errors["NS_ERROR_INTERNAL_ERRORRESULT_RANGEERROR"] = FAILURE(5)
+
+
+# =======================================================================
+# 51: NS_ERROR_MODULE_GENERAL
+# =======================================================================
+with modules["GENERAL"]:
+    # Error code used internally by the incremental downloader to cancel the
+    # network channel when the download is already complete.
+    errors["NS_ERROR_DOWNLOAD_COMPLETE"] = FAILURE(1)
+    # Error code used internally by the incremental downloader to cancel the
+    # network channel when the response to a range request is 200 instead of
+    # 206.
+    errors["NS_ERROR_DOWNLOAD_NOT_PARTIAL"] = FAILURE(2)
+    errors["NS_ERROR_UNORM_MOREOUTPUT"] = FAILURE(33)
+
+    errors["NS_ERROR_DOCSHELL_REQUEST_REJECTED"] = FAILURE(1001)
+    # This is needed for displaying an error message when navigation is
+    # attempted on a document when printing The value arbitrary as long as it
+    # doesn't conflict with any of the other values in the errors in
+    # DisplayLoadError
+    errors["NS_ERROR_DOCUMENT_IS_PRINTMODE"] = FAILURE(2001)
+
+    errors["NS_SUCCESS_DONT_FIXUP"] = SUCCESS(1)
+    # This success code may be returned by nsIAppStartup::Run to indicate that
+    # the application should be restarted.  This condition corresponds to the
+    # case in which nsIAppStartup::Quit was called with the eRestart flag.
+    errors["NS_SUCCESS_RESTART_APP"] = SUCCESS(1)
+
+    # a11y
+    # raised when current pivot's position is needed but it's not in the tree
+    errors["NS_ERROR_NOT_IN_TREE"] = FAILURE(38)
+
+    # see nsTextEquivUtils
+    errors["NS_OK_NO_NAME_CLAUSE_HANDLED"] = SUCCESS(34)
+
+    # Error code used to indicate that functionality has been blocked by the
+    # Policy Manager
+    errors["NS_ERROR_BLOCKED_BY_POLICY"] = FAILURE(3)
+
+
+# ============================================================================
+# Write out the resulting module declarations to C++ and rust files
+# ============================================================================
+
+
+def error_list_h(output):
+    output.write(
+        """
+/* THIS FILE IS GENERATED BY ErrorList.py - DO NOT EDIT */
+
+#ifndef ErrorList_h__
+#define ErrorList_h__
+
+#include <stdint.h>
+
+"""
+    )
+
+    output.write("#define NS_ERROR_MODULE_BASE_OFFSET {}\n".format(MODULE_BASE_OFFSET))
+
+    for mod, val in modules.items():
+        output.write("#define NS_ERROR_MODULE_{} {}\n".format(mod, val.num))
+
+    items = []
+    for error, val in errors.items():
+        items.append("  {} = 0x{:X}".format(error, val))
+    output.write(
+        """
+enum class nsresult : uint32_t
+{{
+{}
+}};
+
+""".format(
+            ",\n".join(items)
+        )
+    )
+
+    items = []
+    for error, val in errors.items():
+        items.append("  {0} = nsresult::{0}".format(error))
+
+    output.write(
+        """
+const nsresult
+{}
+;
+
+#endif // ErrorList_h__
+""".format(
+            ",\n".join(items)
+        )
+    )
+
+
+def error_names_internal_h(output):
+    """Generate ErrorNamesInternal.h, which is a header file declaring one
+    function, const char* GetErrorNameInternal(nsresult). This method is not
+    intended to be used by consumer code, which should instead call
+    GetErrorName in ErrorNames.h."""
+
+    output.write(
+        """
+/* THIS FILE IS GENERATED BY ErrorList.py - DO NOT EDIT */
+
+#ifndef ErrorNamesInternal_h__
+#define ErrorNamesInternal_h__
+
+#include "ErrorNames.h"
+
+namespace {
+
+const char*
+GetErrorNameInternal(nsresult rv)
+{
+  switch (rv) {
+"""
+    )
+
+    # NOTE: Making sure we don't write out duplicate values is important as
+    # we're using a switch statement to implement this.
+    seen = set()
+    for error, val in errors.items():
+        if val not in seen:
+            output.write('  case nsresult::{0}: return "{0}";\n'.format(error))
+        seen.add(val)
+
+    output.write(
+        """
+  default: return nullptr;
+  }
+} // GetErrorNameInternal
+
+} // namespace
+
+#endif // ErrorNamesInternal_h__
+"""
+    )
+
+
+def error_list_rs(output):
+    output.write(
+        """
+/* THIS FILE IS GENERATED BY ErrorList.py - DO NOT EDIT */
+
+use super::nsresult;
+
+"""
+    )
+
+    output.write(
+        "pub const NS_ERROR_MODULE_BASE_OFFSET: nsresult = nsresult({});\n".format(
+            MODULE_BASE_OFFSET
+        )
+    )
+
+    for mod, val in modules.items():
+        output.write(
+            "pub const NS_ERROR_MODULE_{}: nsresult = nsresult({});\n".format(
+                mod, val.num
+            )
+        )
+
+    for error, val in errors.items():
+        output.write("pub const {}: nsresult = nsresult(0x{:X});\n".format(error, val))
+
+
+def gen_jinja(output, input_filename):
+    # This is used to generate Java code for error lists, and can be expanded to
+    # other required contexts in the future if desired.
+    import os
+
+    from jinja2 import Environment, FileSystemLoader, StrictUndefined
+
+    # FileSystemLoader requires the path to the directory containing templates,
+    # not the file name of the template itself.
+    (path, leaf) = os.path.split(input_filename)
+    env = Environment(
+        loader=FileSystemLoader(path, encoding="utf-8"),
+        undefined=StrictUndefined,
+    )
+    tpl = env.get_template(leaf)
+
+    context = {
+        "MODULE_BASE_OFFSET": MODULE_BASE_OFFSET,
+        "modules": ((mod, val.num) for mod, val in modules.items()),
+        "errors": errors.items(),
+    }
+
+    tpl.stream(context).dump(output, encoding="utf-8")