gecko-dev/xpcom/base/ErrorList.py

#!/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)

# 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 a class doesn't allow aggregation
errors["NS_ERROR_NO_AGGREGATION"] = 0x80040110
# 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()
    #   - nsIWidget::OnWindowedPluginKeyEvent()
    # Returned when the notification or the event is handled and it's consumed
    # by somebody.
    errors["NS_SUCCESS_EVENT_CONSUMED"] = SUCCESS(1)
    # Used by:
    #   - nsIWidget::OnWindowedPluginKeyEvent()
    # Returned when the event is handled correctly but the result will be
    # notified asynchronously.
    errors["NS_SUCCESS_EVENT_HANDLED_ASYNCHRONOUSLY"] = SUCCESS(2)


# =======================================================================
# 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)
    # The proxy requires authentication; used when we can't easily propagate 407s.
    errors["NS_ERROR_PROXY_AUTHENTICATION_FAILED"] = FAILURE(407)
    # Indicates that we have sent too many requests in a given amount of time.
    errors["NS_ERROR_TOO_MANY_REQUESTS"] = FAILURE(429)
    # The proxy failed to connect the remote server.
    errors["NS_ERROR_PROXY_BAD_GATEWAY"] = FAILURE(502)
    # The proxy did get any response from the remote server in time.
    errors["NS_ERROR_PROXY_GATEWAY_TIMEOUT"] = FAILURE(504)
    # 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)

    # 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 failed because the user tried to access to a remote XUL
    # document from a website that is not in its white-list.
    errors["NS_ERROR_REMOTE_XUL"] = FAILURE(75)
    # 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)

    # FTP specific error codes:

    errors["NS_ERROR_FTP_LOGIN"] = FAILURE(21)
    errors["NS_ERROR_FTP_CWD"] = FAILURE(22)
    errors["NS_ERROR_FTP_PASV"] = FAILURE(23)
    errors["NS_ERROR_FTP_PWD"] = FAILURE(24)
    errors["NS_ERROR_FTP_LIST"] = FAILURE(28)

    # 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)

    # 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)

    # FTP
    errors["NS_NET_STATUS_BEGIN_FTP_TRANSACTION"] = SUCCESS(27)
    errors["NS_NET_STATUS_END_FTP_TRANSACTION"] = SUCCESS(28)

    # 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"] = FAILURE(8)
    errors["NS_NET_STATUS_WRITING"] = FAILURE(9)

    # nsISocketTransport
    errors["NS_NET_STATUS_RESOLVING_HOST"] = FAILURE(3)
    errors["NS_NET_STATUS_RESOLVED_HOST"] = FAILURE(11)
    errors["NS_NET_STATUS_CONNECTING_TO"] = FAILURE(7)
    errors["NS_NET_STATUS_CONNECTED_TO"] = FAILURE(4)
    errors["NS_NET_STATUS_TLS_HANDSHAKE_STARTING"] = FAILURE(12)
    errors["NS_NET_STATUS_TLS_HANDSHAKE_ENDED"] = FAILURE(13)
    errors["NS_NET_STATUS_SENDING_TO"] = FAILURE(5)
    errors["NS_NET_STATUS_WAITING_FOR"] = FAILURE(10)
    errors["NS_NET_STATUS_RECEIVING_FROM"] = FAILURE(6)

    # nsIInterceptedChannel
    # Generic error for non-specific failures during service worker interception
    errors["NS_ERROR_INTERCEPTION_FAILED"] = FAILURE(100)


# =======================================================================
# 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)
    # Return code for nsFrame::GetNextPrevLineFromeBlockFrame
    errors["NS_POSITION_BEFORE_TABLE"] = SUCCESS(3)


# =======================================================================
# 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_TARGET_DOES_NOT_EXIST"] = FAILURE(6)
    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_DISK_FULL"] = FAILURE(10)
    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_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)
    # XXX Should be JavaScript native errors
    errors["NS_ERROR_TYPE_ERR"] = FAILURE(26)
    errors["NS_ERROR_RANGE_ERR"] = FAILURE(27)
    # StringEncoding API errors from http://wiki.whatwg.org/wiki/StringEncoding
    errors["NS_ERROR_DOM_ENCODING_NOT_SUPPORTED_ERR"] = FAILURE(28)
    errors["NS_ERROR_DOM_INVALID_POINTER_ERR"] = FAILURE(29)
    # 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_SECMAN_ERR"] = FAILURE(1001)
    errors["NS_ERROR_DOM_WRONG_TYPE_ERR"] = FAILURE(1002)
    errors["NS_ERROR_DOM_NOT_OBJECT_ERR"] = FAILURE(1003)
    errors["NS_ERROR_DOM_NOT_XPC_OBJECT_ERR"] = FAILURE(1004)
    errors["NS_ERROR_DOM_NOT_NUMBER_ERR"] = FAILURE(1005)
    errors["NS_ERROR_DOM_NOT_BOOLEAN_ERR"] = FAILURE(1006)
    errors["NS_ERROR_DOM_NOT_FUNCTION_ERR"] = FAILURE(1007)
    errors["NS_ERROR_DOM_TOO_FEW_PARAMETERS_ERR"] = FAILURE(1008)
    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)
    errors["NS_ERROR_DOM_INVALID_STATE_XHR_MUST_BE_OPENED"] = FAILURE(1019)
    errors["NS_ERROR_DOM_INVALID_STATE_XHR_MUST_NOT_BE_SENDING"] = FAILURE(1020)
    errors["NS_ERROR_DOM_INVALID_STATE_XHR_MUST_NOT_BE_LOADING_OR_DONE"] = FAILURE(1021)
    errors["NS_ERROR_DOM_INVALID_STATE_XHR_HAS_WRONG_RESPONSETYPE_FOR_RESPONSEXML"] = FAILURE(1022)
    errors["NS_ERROR_DOM_INVALID_STATE_XHR_HAS_WRONG_RESPONSETYPE_FOR_RESPONSETEXT"] = FAILURE(1023)  # NOQA: E501
    errors["NS_ERROR_DOM_INVALID_STATE_XHR_CHUNKED_RESPONSETYPES_UNSUPPORTED_FOR_SYNC"] = FAILURE(1024)  # NOQA: E501
    errors["NS_ERROR_DOM_INVALID_ACCESS_XHR_TIMEOUT_AND_RESPONSETYPE_UNSUPPORTED_FOR_SYNC"] = FAILURE(1025)  # NOQA: E501

    # 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)

    # Editing command errors.
    errors["NS_ERROR_DOM_INVALID_STATE_DOCUMENT_EXEC_COMMAND"] = FAILURE(1030)
    errors["NS_ERROR_DOM_INVALID_STATE_DOCUMENT_QUERY_COMMAND_ENABLED"] = FAILURE(1031)
    errors["NS_ERROR_DOM_INVALID_STATE_DOCUMENT_QUERY_COMMAND_INDETERM"] = FAILURE(1032)
    errors["NS_ERROR_DOM_INVALID_STATE_DOCUMENT_QUERY_COMMAND_STATE"] = FAILURE(1033)
    errors["NS_ERROR_DOM_INVALID_STATE_DOCUMENT_QUERY_COMMAND_SUPPORTED"] = FAILURE(1034)
    errors["NS_ERROR_DOM_INVALID_STATE_DOCUMENT_QUERY_COMMAND_VALUE"] = FAILURE(1035)

    # 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)

    # 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)

    errors["NS_SUCCESS_EDITOR_ELEMENT_NOT_FOUND"] = SUCCESS(1)
    errors["NS_SUCCESS_EDITOR_FOUND_TARGET"] = SUCCESS(2)


# =======================================================================
# 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_GET_JSOBJECT_OF_DOM_OBJECT"] = FAILURE(42)
    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)
    errors["NS_ERROR_XPC_CANT_PASS_CPOW_TO_NATIVE"] = FAILURE(54)
    # 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 CSP
    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_DISABLED"] = FAILURE(201)
    errors["NS_ERROR_SRI_NOT_ELIGIBLE"] = FAILURE(202)
    errors["NS_ERROR_SRI_UNEXPECTED_HASH_TYPE"] = FAILURE(203)
    errors["NS_ERROR_SRI_IMPORT"] = FAILURE(204)

    # 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)


# =======================================================================
# 22: NS_ERROR_MODULE_DOM_XPATH
# =======================================================================
with modules["DOM_XPATH"]:
    # DOM error codes from http://www.w3.org/TR/DOM-Level-3-XPath/
    errors["NS_ERROR_DOM_INVALID_EXPRESSION_ERR"] = FAILURE(51)
    errors["NS_ERROR_DOM_TYPE_ERR"] = FAILURE(52)


# =======================================================================
# 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
    # blacklist.
    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_MAYBE_TRACKING_URI"] = FAILURE(39)
    errors["NS_ERROR_TRACKING_ANNOTATION_URI"] = FAILURE(40)
    errors["NS_ERROR_FINGERPRINTING_URI"] = FAILURE(41)
    errors["NS_ERROR_CRYPTOMINING_URI"] = FAILURE(42)
    errors["NS_ERROR_SOCIALTRACKING_URI"] = FAILURE(43)
    # 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)

    # This success code indicates that a refresh header was found and
    # successfully setup.
    errors["NS_REFRESHURI_HEADER_FOUND"] = SUCCESS(2)


# =======================================================================
# 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 XBL
    errors["NS_ERROR_XBL_BLOCKED"] = FAILURE(15)
    # 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 XULDocument.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)


# =======================================================================
# 29: NS_ERROR_MODULE_SVG
# =======================================================================
with modules["SVG"]:
    # SVG DOM error codes from http://www.w3.org/TR/SVG11/svgdom.html
    errors["NS_ERROR_DOM_SVG_WRONG_TYPE_ERR"] = FAILURE(0)
    # Yes, the spec says "INVERTABLE", not "INVERTIBLE"
    errors["NS_ERROR_DOM_SVG_MATRIX_NOT_INVERTABLE"] = FAILURE(2)


# =======================================================================
# 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)
    errors["NS_ERROR_DOM_FILE_ABORT_ERR"] = FAILURE(2)


# =======================================================================
# 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_TIMEOUT_ERR"] = FAILURE(10)
    errors["NS_ERROR_DOM_INDEXEDDB_QUOTA_ERR"] = FAILURE(11)
    errors["NS_ERROR_DOM_INDEXEDDB_VERSION_ERR"] = FAILURE(12)
    errors["NS_ERROR_DOM_INDEXEDDB_RECOVERABLE_ERR"] = FAILURE(1001)
    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)


# =======================================================================
# 39: NS_ERROR_MODULE_DOM_ANIM
# =======================================================================
with modules["DOM_ANIM"]:
    errors["NS_ERROR_DOM_ANIM_MISSING_PROPS_ERR"] = FAILURE(1)


# =======================================================================
# 40: NS_ERROR_MODULE_DOM_PUSH
# =======================================================================
with modules["DOM_PUSH"]:
    errors["NS_ERROR_DOM_PUSH_INVALID_REGISTRATION_ERR"] = FAILURE(1)
    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)
    errors["NS_ERROR_DOM_PUSH_GCM_DISABLED"] = FAILURE(7)


# =======================================================================
# 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)

    # Internal platform-related errors
    errors["NS_ERROR_DOM_MEDIA_CUBEB_INITIALIZATION_ERR"] = FAILURE(101)


# =======================================================================
# 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__

""")

    output.write("#define NS_ERROR_MODULE_BASE_OFFSET {}\n".format(MODULE_BASE_OFFSET))

    for mod, val in modules.iteritems():
        output.write("#define NS_ERROR_MODULE_{} {}\n".format(mod, val.num))

    items = []
    for error, val in errors.iteritems():
        items.append("  {} = 0x{:X}".format(error, val))
    output.write("""
enum class nsresult : uint32_t
{{
{}
}};

""".format(",\n".join(items)))

    items = []
    for error, val in errors.iteritems():
        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.iteritems():
        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.iteritems():
        output.write("pub const NS_ERROR_MODULE_{}: nsresult = nsresult({});\n"
                     .format(mod, val.num))

    for error, val in errors.iteritems():
        output.write("pub const {}: nsresult = nsresult(0x{:X});\n".format(error, val))