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# DExTer : Debugging Experience Tester
# ~~~~~~ ~ ~~ ~ ~~
#
# Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
# See https://llvm.org/LICENSE.txt for license information.
# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
"""This is a special subtool that is run when no subtool is specified.
It just provides a welcome message and simple usage instructions.
"""
from dex.tools import ToolBase, get_tool_names
from dex.utils.Exceptions import Error
from dex.utils.ReturnCode import ReturnCode
# This is a special "tool" that is run when no subtool has been specified on
# the command line. Its only job is to provide useful usage info.
class Tool(ToolBase):
"""Welcome to DExTer (Debugging Experience Tester).
Please choose a subtool from the list below. Use 'dexter.py help' for more
information.
"""
@property
def name(self):
return 'DExTer'
def add_tool_arguments(self, parser, defaults):
parser.description = Tool.__doc__
parser.add_argument(
'subtool',
choices=[t for t in get_tool_names() if not t.endswith('-')],
nargs='?',
help='name of subtool')
parser.add_argument(
'subtool_options',
metavar='subtool-options',
nargs='*',
help='subtool specific options')
def handle_options(self, defaults):
if not self.context.options.subtool:
raise Error('<d>no subtool specified</>\n\n{}\n'.format(
self.parser.format_help()))
def go(self) -> ReturnCode:
# This fn is never called because not specifying a subtool raises an
# exception.
return ReturnCode._ERROR
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