"""Exception classes for all of Flake8."""
class Flake8Exception(Exception):
"""Plain Flake8 exception."""
class EarlyQuit(Flake8Exception):
"""Except raised when encountering a KeyboardInterrupt."""
class ExecutionError(Flake8Exception):
"""Exception raised during execution of Flake8."""
class FailedToLoadPlugin(Flake8Exception):
"""Exception raised when a plugin fails to load."""
FORMAT = 'Flake8 failed to load plugin "%(name)s" due to %(exc)s.'
def __init__(self, plugin_name: str, exception: Exception) -> None:
"""Initialize our FailedToLoadPlugin exception."""
self.plugin_name = plugin_name
self.original_exception = exception
super().__init__(plugin_name, exception)
def __str__(self) -> str:
"""Format our exception message."""
return self.FORMAT % {
"name": self.plugin_name,
"exc": self.original_exception,
}
class PluginRequestedUnknownParameters(Flake8Exception):
"""The plugin requested unknown parameters."""
FORMAT = '"%(name)s" requested unknown parameters causing %(exc)s'
def __init__(self, plugin_name: str, exception: Exception) -> None:
"""Pop certain keyword arguments for initialization."""
self.plugin_name = plugin_name
self.original_exception = exception
super().__init__(plugin_name, exception)
def __str__(self) -> str:
"""Format our exception message."""
return self.FORMAT % {
"name": self.plugin_name,
"exc": self.original_exception,
}
class PluginExecutionFailed(Flake8Exception):
"""The plugin failed during execution."""
FORMAT = '{fname}: "{plugin}" failed during execution due to {exc!r}'
def __init__(
self,
filename: str,
plugin_name: str,
exception: Exception,
) -> None:
"""Utilize keyword arguments for message generation."""
self.filename = filename
self.plugin_name = plugin_name
self.original_exception = exception
super().__init__(filename, plugin_name, exception)
def __str__(self) -> str:
"""Format our exception message."""
return self.FORMAT.format(
fname=self.filename,
plugin=self.plugin_name,
exc=self.original_exception,
)
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