795 lines
24 KiB
Python
795 lines
24 KiB
Python
# -*- coding: utf-8 -*-
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"""
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The MIT License (MIT)
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Copyright (c) 2015-2020 Rapptz
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Permission is hereby granted, free of charge, to any person obtaining a
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copy of this software and associated documentation files (the "Software"),
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to deal in the Software without restriction, including without limitation
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the rights to use, copy, modify, merge, publish, distribute, sublicense,
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and/or sell copies of the Software, and to permit persons to whom the
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Software is furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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DEALINGS IN THE SOFTWARE.
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"""
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from discord.errors import ClientException, DiscordException
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__all__ = (
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'CommandError',
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'MissingRequiredArgument',
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'BadArgument',
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'PrivateMessageOnly',
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'NoPrivateMessage',
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'CheckFailure',
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'CheckAnyFailure',
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'CommandNotFound',
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'DisabledCommand',
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'CommandInvokeError',
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'TooManyArguments',
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'UserInputError',
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'CommandOnCooldown',
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'MaxConcurrencyReached',
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'NotOwner',
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'MessageNotFound',
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'MemberNotFound',
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'UserNotFound',
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'ChannelNotFound',
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'ChannelNotReadable',
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'BadColourArgument',
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'RoleNotFound',
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'BadInviteArgument',
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'EmojiNotFound',
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'PartialEmojiConversionFailure',
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'BadBoolArgument',
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'MissingRole',
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'BotMissingRole',
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'MissingAnyRole',
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'BotMissingAnyRole',
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'MissingPermissions',
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'BotMissingPermissions',
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'NSFWChannelRequired',
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'ConversionError',
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'BadUnionArgument',
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'ArgumentParsingError',
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'UnexpectedQuoteError',
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'InvalidEndOfQuotedStringError',
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'ExpectedClosingQuoteError',
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'ExtensionError',
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'ExtensionAlreadyLoaded',
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'ExtensionNotLoaded',
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'NoEntryPointError',
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'ExtensionFailed',
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'ExtensionNotFound',
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'CommandRegistrationError',
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)
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class CommandError(DiscordException):
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r"""The base exception type for all command related errors.
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This inherits from :exc:`discord.DiscordException`.
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This exception and exceptions inherited from it are handled
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in a special way as they are caught and passed into a special event
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from :class:`.Bot`\, :func:`on_command_error`.
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"""
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def __init__(self, message=None, *args):
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if message is not None:
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# clean-up @everyone and @here mentions
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m = message.replace('@everyone', '@\u200beveryone').replace('@here', '@\u200bhere')
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super().__init__(m, *args)
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else:
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super().__init__(*args)
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class ConversionError(CommandError):
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"""Exception raised when a Converter class raises non-CommandError.
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This inherits from :exc:`CommandError`.
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Attributes
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----------
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converter: :class:`discord.ext.commands.Converter`
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The converter that failed.
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original: :exc:`Exception`
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The original exception that was raised. You can also get this via
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the ``__cause__`` attribute.
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"""
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def __init__(self, converter, original):
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self.converter = converter
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self.original = original
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class UserInputError(CommandError):
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"""The base exception type for errors that involve errors
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regarding user input.
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This inherits from :exc:`CommandError`.
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"""
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pass
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class CommandNotFound(CommandError):
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"""Exception raised when a command is attempted to be invoked
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but no command under that name is found.
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This is not raised for invalid subcommands, rather just the
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initial main command that is attempted to be invoked.
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This inherits from :exc:`CommandError`.
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"""
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pass
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class MissingRequiredArgument(UserInputError):
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"""Exception raised when parsing a command and a parameter
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that is required is not encountered.
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This inherits from :exc:`UserInputError`
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Attributes
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-----------
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param: :class:`inspect.Parameter`
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The argument that is missing.
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"""
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def __init__(self, param):
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self.param = param
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super().__init__('{0.name} is a required argument that is missing.'.format(param))
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class TooManyArguments(UserInputError):
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"""Exception raised when the command was passed too many arguments and its
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:attr:`.Command.ignore_extra` attribute was not set to ``True``.
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This inherits from :exc:`UserInputError`
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"""
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pass
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class BadArgument(UserInputError):
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"""Exception raised when a parsing or conversion failure is encountered
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on an argument to pass into a command.
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This inherits from :exc:`UserInputError`
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"""
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pass
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class CheckFailure(CommandError):
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"""Exception raised when the predicates in :attr:`.Command.checks` have failed.
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This inherits from :exc:`CommandError`
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"""
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pass
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class CheckAnyFailure(CheckFailure):
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"""Exception raised when all predicates in :func:`check_any` fail.
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This inherits from :exc:`CheckFailure`.
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.. versionadded:: 1.3
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Attributes
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------------
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errors: List[:class:`CheckFailure`]
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A list of errors that were caught during execution.
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checks: List[Callable[[:class:`Context`], :class:`bool`]]
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A list of check predicates that failed.
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"""
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def __init__(self, checks, errors):
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self.checks = checks
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self.errors = errors
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super().__init__('You do not have permission to run this command.')
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class PrivateMessageOnly(CheckFailure):
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"""Exception raised when an operation does not work outside of private
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message contexts.
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This inherits from :exc:`CheckFailure`
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"""
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def __init__(self, message=None):
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super().__init__(message or 'This command can only be used in private messages.')
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class NoPrivateMessage(CheckFailure):
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"""Exception raised when an operation does not work in private message
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contexts.
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This inherits from :exc:`CheckFailure`
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"""
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def __init__(self, message=None):
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super().__init__(message or 'This command cannot be used in private messages.')
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class NotOwner(CheckFailure):
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"""Exception raised when the message author is not the owner of the bot.
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This inherits from :exc:`CheckFailure`
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"""
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pass
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class MemberNotFound(BadArgument):
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"""Exception raised when the member provided was not found in the bot's
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cache.
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This inherits from :exc:`BadArgument`
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.. versionadded:: 1.5
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Attributes
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-----------
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argument: :class:`str`
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The member supplied by the caller that was not found
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"""
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def __init__(self, argument):
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self.argument = argument
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super().__init__('Member "{}" not found.'.format(argument))
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class UserNotFound(BadArgument):
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"""Exception raised when the user provided was not found in the bot's
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cache.
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This inherits from :exc:`BadArgument`
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.. versionadded:: 1.5
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Attributes
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-----------
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argument: :class:`str`
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The user supplied by the caller that was not found
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"""
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def __init__(self, argument):
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self.argument = argument
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super().__init__('User "{}" not found.'.format(argument))
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class MessageNotFound(BadArgument):
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"""Exception raised when the message provided was not found in the channel.
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This inherits from :exc:`BadArgument`
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.. versionadded:: 1.5
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Attributes
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-----------
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argument: :class:`str`
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The message supplied by the caller that was not found
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"""
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def __init__(self, argument):
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self.argument = argument
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super().__init__('Message "{}" not found.'.format(argument))
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class ChannelNotReadable(BadArgument):
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"""Exception raised when the bot does not have permission to read messages
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in the channel.
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This inherits from :exc:`BadArgument`
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.. versionadded:: 1.5
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Attributes
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-----------
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argument: :class:`.abc.GuildChannel`
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The channel supplied by the caller that was not readable
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"""
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def __init__(self, argument):
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self.argument = argument
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super().__init__("Can't read messages in {}.".format(argument.mention))
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class ChannelNotFound(BadArgument):
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"""Exception raised when the bot can not find the channel.
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This inherits from :exc:`BadArgument`
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.. versionadded:: 1.5
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Attributes
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-----------
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channel: :class:`str`
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The channel supplied by the caller that was not found
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"""
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def __init__(self, argument):
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self.argument = argument
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super().__init__('Channel "{}" not found.'.format(argument))
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class BadColourArgument(BadArgument):
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"""Exception raised when the colour is not valid.
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This inherits from :exc:`BadArgument`
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.. versionadded:: 1.5
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Attributes
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-----------
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argument: :class:`str`
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The colour supplied by the caller that was not valid
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"""
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def __init__(self, argument):
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self.argument = argument
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super().__init__('Colour "{}" is invalid.'.format(argument))
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BadColorArgument = BadColourArgument
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class RoleNotFound(BadArgument):
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"""Exception raised when the bot can not find the role.
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This inherits from :exc:`BadArgument`
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.. versionadded:: 1.5
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Attributes
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-----------
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argument: :class:`str`
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The role supplied by the caller that was not found
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"""
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def __init__(self, argument):
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self.argument = argument
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super().__init__('Role "{}" not found.'.format(argument))
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class BadInviteArgument(BadArgument):
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"""Exception raised when the invite is invalid or expired.
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This inherits from :exc:`BadArgument`
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.. versionadded:: 1.5
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"""
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def __init__(self):
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super().__init__('Invite is invalid or expired.')
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class EmojiNotFound(BadArgument):
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"""Exception raised when the bot can not find the emoji.
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This inherits from :exc:`BadArgument`
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.. versionadded:: 1.5
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Attributes
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-----------
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argument: :class:`str`
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The emoji supplied by the caller that was not found
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"""
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def __init__(self, argument):
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self.argument = argument
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super().__init__('Emoji "{}" not found.'.format(argument))
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class PartialEmojiConversionFailure(BadArgument):
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"""Exception raised when the emoji provided does not match the correct
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format.
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This inherits from :exc:`BadArgument`
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.. versionadded:: 1.5
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Attributes
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-----------
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argument: :class:`str`
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The emoji supplied by the caller that did not match the regex
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"""
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def __init__(self, argument):
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self.argument = argument
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super().__init__('Couldn\'t convert "{}" to PartialEmoji.'.format(argument))
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class BadBoolArgument(BadArgument):
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"""Exception raised when a boolean argument was not convertable.
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This inherits from :exc:`BadArgument`
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.. versionadded:: 1.5
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Attributes
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-----------
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argument: :class:`str`
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The boolean argument supplied by the caller that is not in the predefined list
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"""
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def __init__(self, argument):
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self.argument = argument
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super().__init__('{} is not a recognised boolean option'.format(argument))
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class DisabledCommand(CommandError):
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"""Exception raised when the command being invoked is disabled.
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This inherits from :exc:`CommandError`
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"""
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pass
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class CommandInvokeError(CommandError):
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"""Exception raised when the command being invoked raised an exception.
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This inherits from :exc:`CommandError`
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Attributes
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-----------
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original: :exc:`Exception`
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The original exception that was raised. You can also get this via
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the ``__cause__`` attribute.
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"""
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def __init__(self, e):
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self.original = e
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super().__init__('Command raised an exception: {0.__class__.__name__}: {0}'.format(e))
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class CommandOnCooldown(CommandError):
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"""Exception raised when the command being invoked is on cooldown.
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This inherits from :exc:`CommandError`
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Attributes
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-----------
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cooldown: Cooldown
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A class with attributes ``rate``, ``per``, and ``type`` similar to
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the :func:`.cooldown` decorator.
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retry_after: :class:`float`
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The amount of seconds to wait before you can retry again.
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"""
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def __init__(self, cooldown, retry_after):
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self.cooldown = cooldown
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self.retry_after = retry_after
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super().__init__('You are on cooldown. Try again in {:.2f}s'.format(retry_after))
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class MaxConcurrencyReached(CommandError):
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"""Exception raised when the command being invoked has reached its maximum concurrency.
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This inherits from :exc:`CommandError`.
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Attributes
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------------
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number: :class:`int`
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The maximum number of concurrent invokers allowed.
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per: :class:`.BucketType`
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The bucket type passed to the :func:`.max_concurrency` decorator.
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"""
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def __init__(self, number, per):
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self.number = number
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self.per = per
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name = per.name
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suffix = 'per %s' % name if per.name != 'default' else 'globally'
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plural = '%s times %s' if number > 1 else '%s time %s'
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fmt = plural % (number, suffix)
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super().__init__('Too many people using this command. It can only be used {} concurrently.'.format(fmt))
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class MissingRole(CheckFailure):
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"""Exception raised when the command invoker lacks a role to run a command.
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This inherits from :exc:`CheckFailure`
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.. versionadded:: 1.1
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Attributes
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-----------
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missing_role: Union[:class:`str`, :class:`int`]
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The required role that is missing.
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This is the parameter passed to :func:`~.commands.has_role`.
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"""
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def __init__(self, missing_role):
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self.missing_role = missing_role
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message = 'Role {0!r} is required to run this command.'.format(missing_role)
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super().__init__(message)
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class BotMissingRole(CheckFailure):
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"""Exception raised when the bot's member lacks a role to run a command.
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This inherits from :exc:`CheckFailure`
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.. versionadded:: 1.1
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Attributes
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-----------
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missing_role: Union[:class:`str`, :class:`int`]
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The required role that is missing.
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This is the parameter passed to :func:`~.commands.has_role`.
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"""
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def __init__(self, missing_role):
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self.missing_role = missing_role
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message = 'Bot requires the role {0!r} to run this command'.format(missing_role)
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super().__init__(message)
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class MissingAnyRole(CheckFailure):
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"""Exception raised when the command invoker lacks any of
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the roles specified to run a command.
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This inherits from :exc:`CheckFailure`
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.. versionadded:: 1.1
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Attributes
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-----------
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missing_roles: List[Union[:class:`str`, :class:`int`]]
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The roles that the invoker is missing.
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These are the parameters passed to :func:`~.commands.has_any_role`.
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"""
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def __init__(self, missing_roles):
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self.missing_roles = missing_roles
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missing = ["'{}'".format(role) for role in missing_roles]
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if len(missing) > 2:
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fmt = '{}, or {}'.format(", ".join(missing[:-1]), missing[-1])
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else:
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fmt = ' or '.join(missing)
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message = "You are missing at least one of the required roles: {}".format(fmt)
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super().__init__(message)
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class BotMissingAnyRole(CheckFailure):
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"""Exception raised when the bot's member lacks any of
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the roles specified to run a command.
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This inherits from :exc:`CheckFailure`
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.. versionadded:: 1.1
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Attributes
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-----------
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missing_roles: List[Union[:class:`str`, :class:`int`]]
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The roles that the bot's member is missing.
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These are the parameters passed to :func:`~.commands.has_any_role`.
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"""
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def __init__(self, missing_roles):
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self.missing_roles = missing_roles
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missing = ["'{}'".format(role) for role in missing_roles]
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if len(missing) > 2:
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fmt = '{}, or {}'.format(", ".join(missing[:-1]), missing[-1])
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else:
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fmt = ' or '.join(missing)
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message = "Bot is missing at least one of the required roles: {}".format(fmt)
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super().__init__(message)
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class NSFWChannelRequired(CheckFailure):
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"""Exception raised when a channel does not have the required NSFW setting.
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This inherits from :exc:`CheckFailure`.
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.. versionadded:: 1.1
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Parameters
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-----------
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channel: :class:`discord.abc.GuildChannel`
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The channel that does not have NSFW enabled.
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"""
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def __init__(self, channel):
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self.channel = channel
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super().__init__("Channel '{}' needs to be NSFW for this command to work.".format(channel))
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class MissingPermissions(CheckFailure):
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"""Exception raised when the command invoker lacks permissions to run a
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command.
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This inherits from :exc:`CheckFailure`
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Attributes
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-----------
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missing_perms: :class:`list`
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The required permissions that are missing.
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"""
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def __init__(self, missing_perms, *args):
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self.missing_perms = missing_perms
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missing = [perm.replace('_', ' ').replace('guild', 'server').title() for perm in missing_perms]
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if len(missing) > 2:
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fmt = '{}, and {}'.format(", ".join(missing[:-1]), missing[-1])
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else:
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fmt = ' and '.join(missing)
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message = 'You are missing {} permission(s) to run this command.'.format(fmt)
|
|
super().__init__(message, *args)
|
|
|
|
class BotMissingPermissions(CheckFailure):
|
|
"""Exception raised when the bot's member lacks permissions to run a
|
|
command.
|
|
|
|
This inherits from :exc:`CheckFailure`
|
|
|
|
Attributes
|
|
-----------
|
|
missing_perms: :class:`list`
|
|
The required permissions that are missing.
|
|
"""
|
|
def __init__(self, missing_perms, *args):
|
|
self.missing_perms = missing_perms
|
|
|
|
missing = [perm.replace('_', ' ').replace('guild', 'server').title() for perm in missing_perms]
|
|
|
|
if len(missing) > 2:
|
|
fmt = '{}, and {}'.format(", ".join(missing[:-1]), missing[-1])
|
|
else:
|
|
fmt = ' and '.join(missing)
|
|
message = 'Bot requires {} permission(s) to run this command.'.format(fmt)
|
|
super().__init__(message, *args)
|
|
|
|
class BadUnionArgument(UserInputError):
|
|
"""Exception raised when a :data:`typing.Union` converter fails for all
|
|
its associated types.
|
|
|
|
This inherits from :exc:`UserInputError`
|
|
|
|
Attributes
|
|
-----------
|
|
param: :class:`inspect.Parameter`
|
|
The parameter that failed being converted.
|
|
converters: Tuple[Type, ...]
|
|
A tuple of converters attempted in conversion, in order of failure.
|
|
errors: List[:class:`CommandError`]
|
|
A list of errors that were caught from failing the conversion.
|
|
"""
|
|
def __init__(self, param, converters, errors):
|
|
self.param = param
|
|
self.converters = converters
|
|
self.errors = errors
|
|
|
|
def _get_name(x):
|
|
try:
|
|
return x.__name__
|
|
except AttributeError:
|
|
return x.__class__.__name__
|
|
|
|
to_string = [_get_name(x) for x in converters]
|
|
if len(to_string) > 2:
|
|
fmt = '{}, or {}'.format(', '.join(to_string[:-1]), to_string[-1])
|
|
else:
|
|
fmt = ' or '.join(to_string)
|
|
|
|
super().__init__('Could not convert "{0.name}" into {1}.'.format(param, fmt))
|
|
|
|
class ArgumentParsingError(UserInputError):
|
|
"""An exception raised when the parser fails to parse a user's input.
|
|
|
|
This inherits from :exc:`UserInputError`.
|
|
|
|
There are child classes that implement more granular parsing errors for
|
|
i18n purposes.
|
|
"""
|
|
pass
|
|
|
|
class UnexpectedQuoteError(ArgumentParsingError):
|
|
"""An exception raised when the parser encounters a quote mark inside a non-quoted string.
|
|
|
|
This inherits from :exc:`ArgumentParsingError`.
|
|
|
|
Attributes
|
|
------------
|
|
quote: :class:`str`
|
|
The quote mark that was found inside the non-quoted string.
|
|
"""
|
|
def __init__(self, quote):
|
|
self.quote = quote
|
|
super().__init__('Unexpected quote mark, {0!r}, in non-quoted string'.format(quote))
|
|
|
|
class InvalidEndOfQuotedStringError(ArgumentParsingError):
|
|
"""An exception raised when a space is expected after the closing quote in a string
|
|
but a different character is found.
|
|
|
|
This inherits from :exc:`ArgumentParsingError`.
|
|
|
|
Attributes
|
|
-----------
|
|
char: :class:`str`
|
|
The character found instead of the expected string.
|
|
"""
|
|
def __init__(self, char):
|
|
self.char = char
|
|
super().__init__('Expected space after closing quotation but received {0!r}'.format(char))
|
|
|
|
class ExpectedClosingQuoteError(ArgumentParsingError):
|
|
"""An exception raised when a quote character is expected but not found.
|
|
|
|
This inherits from :exc:`ArgumentParsingError`.
|
|
|
|
Attributes
|
|
-----------
|
|
close_quote: :class:`str`
|
|
The quote character expected.
|
|
"""
|
|
|
|
def __init__(self, close_quote):
|
|
self.close_quote = close_quote
|
|
super().__init__('Expected closing {}.'.format(close_quote))
|
|
|
|
class ExtensionError(DiscordException):
|
|
"""Base exception for extension related errors.
|
|
|
|
This inherits from :exc:`~discord.DiscordException`.
|
|
|
|
Attributes
|
|
------------
|
|
name: :class:`str`
|
|
The extension that had an error.
|
|
"""
|
|
def __init__(self, message=None, *args, name):
|
|
self.name = name
|
|
message = message or 'Extension {!r} had an error.'.format(name)
|
|
# clean-up @everyone and @here mentions
|
|
m = message.replace('@everyone', '@\u200beveryone').replace('@here', '@\u200bhere')
|
|
super().__init__(m, *args)
|
|
|
|
class ExtensionAlreadyLoaded(ExtensionError):
|
|
"""An exception raised when an extension has already been loaded.
|
|
|
|
This inherits from :exc:`ExtensionError`
|
|
"""
|
|
def __init__(self, name):
|
|
super().__init__('Extension {!r} is already loaded.'.format(name), name=name)
|
|
|
|
class ExtensionNotLoaded(ExtensionError):
|
|
"""An exception raised when an extension was not loaded.
|
|
|
|
This inherits from :exc:`ExtensionError`
|
|
"""
|
|
def __init__(self, name):
|
|
super().__init__('Extension {!r} has not been loaded.'.format(name), name=name)
|
|
|
|
class NoEntryPointError(ExtensionError):
|
|
"""An exception raised when an extension does not have a ``setup`` entry point function.
|
|
|
|
This inherits from :exc:`ExtensionError`
|
|
"""
|
|
def __init__(self, name):
|
|
super().__init__("Extension {!r} has no 'setup' function.".format(name), name=name)
|
|
|
|
class ExtensionFailed(ExtensionError):
|
|
"""An exception raised when an extension failed to load during execution of the module or ``setup`` entry point.
|
|
|
|
This inherits from :exc:`ExtensionError`
|
|
|
|
Attributes
|
|
-----------
|
|
name: :class:`str`
|
|
The extension that had the error.
|
|
original: :exc:`Exception`
|
|
The original exception that was raised. You can also get this via
|
|
the ``__cause__`` attribute.
|
|
"""
|
|
def __init__(self, name, original):
|
|
self.original = original
|
|
fmt = 'Extension {0!r} raised an error: {1.__class__.__name__}: {1}'
|
|
super().__init__(fmt.format(name, original), name=name)
|
|
|
|
class ExtensionNotFound(ExtensionError):
|
|
"""An exception raised when an extension is not found.
|
|
|
|
This inherits from :exc:`ExtensionError`
|
|
|
|
.. versionchanged:: 1.3
|
|
Made the ``original`` attribute always None.
|
|
|
|
Attributes
|
|
-----------
|
|
name: :class:`str`
|
|
The extension that had the error.
|
|
original: :class:`NoneType`
|
|
Always ``None`` for backwards compatibility.
|
|
"""
|
|
def __init__(self, name, original=None):
|
|
self.original = None
|
|
fmt = 'Extension {0!r} could not be loaded.'
|
|
super().__init__(fmt.format(name), name=name)
|
|
|
|
class CommandRegistrationError(ClientException):
|
|
"""An exception raised when the command can't be added
|
|
because the name is already taken by a different command.
|
|
|
|
This inherits from :exc:`discord.ClientException`
|
|
|
|
.. versionadded:: 1.4
|
|
|
|
Attributes
|
|
----------
|
|
name: :class:`str`
|
|
The command name that had the error.
|
|
alias_conflict: :class:`bool`
|
|
Whether the name that conflicts is an alias of the command we try to add.
|
|
"""
|
|
def __init__(self, name, *, alias_conflict=False):
|
|
self.name = name
|
|
self.alias_conflict = alias_conflict
|
|
type_ = 'alias' if alias_conflict else 'command'
|
|
super().__init__('The {} {} is already an existing command or alias.'.format(type_, name))
|