bpython/bpdb/__init__.py at fix-paste-fix · optionalg/bpython · GitHub

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# encoding: utf-8

# The MIT License

# Permission is hereby granted, free of charge, to any person obtaining a copy

# of this software and associated documentation files (the "Software"), to deal

# in the Software without restriction, including without limitation the rights

# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell

# copies of the Software, and to permit persons to whom the Software is

# furnished to do so, subject to the following conditions:

# The above copyright notice and this permission notice shall be included in

# all copies or substantial portions of the Software.

# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE

# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER

# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,

# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN

# THE SOFTWARE.

from __future__ import print_function, absolute_import

import os

import sys

import traceback

import bpython

from .debugger import BPdb

from optparse import OptionParser

from pdb import Restart

__version__ = bpython.__version__

def set_trace():

""" Just like pdb.set_trace(), a helper function that creates

a debugger instance and sets the trace. """

debugger = BPdb()

debugger.set_trace(sys._getframe().f_back)

# Adopted verbatim from pdb for completeness:

def post_mortem(t=None):

# handling the default

if t is None:

# sys.exc_info() returns (type, value, traceback) if an exception is

# being handled, otherwise it returns None

t = sys.exc_info()[2]

if t is None:

raise ValueError("A valid traceback must be passed if no "

"exception is being handled")

p = BPdb()

p.reset()

p.interaction(None, t)

def pm():

post_mortem(getattr(sys, "last_traceback", None))

def main():

parser = OptionParser(

usage='Usage: %prog [options] [file [args]]')

parser.add_option('--version', '-V', action='store_true',

help='Print version and exit.')

options, args = parser.parse_args(sys.argv)

if options.version:

print('bpdb on top of bpython version', __version__, end="")

print('on top of Python', sys.version.split()[0])

'See AUTHORS for detail.')

return 0

if len(args) < 2:

print('usage: bpdb scriptfile [arg] ...')

return 2

# The following code is based on Python's pdb.py.

mainpyfile = args[1]

if not os.path.exists(mainpyfile):

print('Error:', mainpyfile, 'does not exist')

return 1

# Hide bpdb from argument list.

del sys.argv[0]

# Replace bpdb's dir with script's dir in front of module search path.

sys.path[0] = os.path.dirname(mainpyfile)

pdb = BPdb()

while True:

try:

pdb._runscript(mainpyfile)

if pdb._user_requested_quit:

break

print("The program finished and will be restarted")

except Restart:

print("Restarting", mainpyfile, "with arguments:")

print("\t" + " ".join(sys.argv[1:]))

except SystemExit:

# In most cases SystemExit does not warrant a post-mortem session.

print("The program exited via sys.exit(). Exit status: ",)

print(sys.exc_info()[1])

except:

traceback.print_exc()

print("Uncaught exception. Entering post mortem debugging")

print("Running 'cont' or 'step' will restart the program")

t = sys.exc_info()[2]

pdb.interaction(None, t)

print("Post mortem debugger finished. The " + mainpyfile +

" will be restarted")

bpython/bpdb/__init__.py at fix-paste-fix · optionalg/bpython · GitHub

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