async def _evaluate_checks(self, command: commands.Command,
context: context_.Context) -> bool:
checks = [*self._checks, *command.checks]
if command.plugin is not None:
checks.append(command.plugin.plugin_check)
failed_checks = []
for check in checks:
try:
if not await check(context):
failed_checks.append(
errors.CheckFailure(
f"Check {check.__name__} failed for command {command.name}"
))
except Exception as ex:
error = errors.CheckFailure(str(ex))
error.__cause__ = ex
failed_checks.append(ex)
if len(failed_checks) > 1:
raise errors.CheckFailure("Multiple checks failed: " + ", ".join(
str(ex) for ex in failed_checks))
elif failed_checks:
raise failed_checks[0]
return True
async def is_runnable(self, context: context_.Context) -> bool:
"""
Run all the checks for the command to determine whether or not it is
runnable in the given context.
Args:
context (:obj:`~.context.Context`): The context to evaluate the checks with.
Returns:
:obj:`bool`: If the command is runnable in the context given.
Raises:
:obj:`~.errors.CheckFailure`: If the command is not runnable in the context given.
"""
for check in self._checks:
try:
result = await check(context)
except errors.MissingRequiredAttachment:
# Bypass attachment check because we still want the command to show for the help
# overview and it is unlikely that someone will call the help command with an attachment
# to the message.
result = True
if result is False:
raise errors.CheckFailure(f"Check {check.__name__} failed for command {self.name}")
return True
async def is_runnable(self, context: context_.Context) -> bool:
"""
Run all the checks for the command to determine whether or not it is
runnable in the given context.
Args:
context (:obj:`~.context.Context`): The context to evaluate the checks with.
Returns:
:obj:`bool`: If the command is runnable in the context given.
Raises:
:obj:`~.errors.CheckFailure`: If the command is not runnable in the context given.
"""
for check in self._checks:
result = await check(context)
if result is False:
raise errors.CheckFailure(
f"Check {check.__name__} failed for command {self.name}")
return True
async def is_runnable(self, context: context_.Context) -> bool:
if getattr(self, "disabled", False):
raise errors.CheckFailure("Command is disabled.")
return await super().is_runnable(context)