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![Christian Heimes](/assets/img/avatar_default.png)
svn+ssh://pythondev@svn.python.org/python/trunk ........ r61913 | benjamin.peterson | 2008-03-25 22:14:42 +0100 (Tue, 25 Mar 2008) | 2 lines Merged the ACKS from py3k ........ r61915 | thomas.heller | 2008-03-25 22:18:39 +0100 (Tue, 25 Mar 2008) | 1 line Make _ctypes.c PY_SSIZE_T_CLEAN. ........ r61916 | benjamin.peterson | 2008-03-25 22:55:50 +0100 (Tue, 25 Mar 2008) | 3 lines Opps! I merged the revisions, but forgot to add the header to ACKS ........ r61918 | andrew.kuchling | 2008-03-26 01:16:50 +0100 (Wed, 26 Mar 2008) | 1 line Minor docstring typos ........ r61919 | andrew.kuchling | 2008-03-26 01:30:02 +0100 (Wed, 26 Mar 2008) | 1 line Add various items ........ r61922 | neal.norwitz | 2008-03-26 05:55:51 +0100 (Wed, 26 Mar 2008) | 6 lines Try to get this test to be less flaky. It was failing sometimes because the connect would succeed before the timeout occurred. Try using an address and port that hopefully doesn't exist to ensure we get no response. If this doesn't work, we can use a public address close to python.org and hopefully that address never gets taken. ........ r61923 | jerry.seutter | 2008-03-26 06:03:03 +0100 (Wed, 26 Mar 2008) | 1 line Changed test so it no longer runs as a side effect of importing. ........ r61924 | neal.norwitz | 2008-03-26 06:19:41 +0100 (Wed, 26 Mar 2008) | 5 lines Ensure that the mailbox is closed to prevent problems on Windows with removing an open file. This doesn't seem to be a problem in 2.6, but that appears to be somewhat accidental (specific to reference counting). When this gets merged to 3.0, it will make the 3.0 code simpler. ........ r61925 | jerry.seutter | 2008-03-26 06:32:51 +0100 (Wed, 26 Mar 2008) | 1 line Changed test so it no longer runs as a side effect of importing. ........ r61926 | jerry.seutter | 2008-03-26 06:58:14 +0100 (Wed, 26 Mar 2008) | 1 line Changed test so it no longer runs as a side effect of importing. ........ r61928 | georg.brandl | 2008-03-26 10:04:36 +0100 (Wed, 26 Mar 2008) | 2 lines Add Josiah. ........ r61929 | georg.brandl | 2008-03-26 10:32:46 +0100 (Wed, 26 Mar 2008) | 2 lines Add an example for an RFC 822 continuation. ........ r61931 | benjamin.peterson | 2008-03-26 12:57:47 +0100 (Wed, 26 Mar 2008) | 2 lines Added help options to PDB ........ r61935 | christian.heimes | 2008-03-26 13:32:49 +0100 (Wed, 26 Mar 2008) | 1 line Prepare integration of bytearray backport branch ........ r61938 | christian.heimes | 2008-03-26 13:50:43 +0100 (Wed, 26 Mar 2008) | 3 lines Removed merge tracking for "svnmerge" for svn+ssh://pythondev@svn.python.org/python/branches/trunk-bytearray ........ r61943 | georg.brandl | 2008-03-26 13:57:47 +0100 (Wed, 26 Mar 2008) | 2 lines Fix and simplify error handling, silencing a compiler warning. ........
1283 lines
44 KiB
Python
Executable file
1283 lines
44 KiB
Python
Executable file
#! /usr/bin/env python
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"""A Python debugger."""
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# (See pdb.doc for documentation.)
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import sys
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import linecache
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import cmd
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import bdb
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from repr import Repr
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import os
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import re
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import pprint
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import traceback
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class Restart(Exception):
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"""Causes a debugger to be restarted for the debugged python program."""
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pass
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# Create a custom safe Repr instance and increase its maxstring.
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# The default of 30 truncates error messages too easily.
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_repr = Repr()
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_repr.maxstring = 200
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_saferepr = _repr.repr
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__all__ = ["run", "pm", "Pdb", "runeval", "runctx", "runcall", "set_trace",
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"post_mortem", "help"]
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def find_function(funcname, filename):
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cre = re.compile(r'def\s+%s\s*[(]' % re.escape(funcname))
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try:
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fp = open(filename)
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except IOError:
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return None
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# consumer of this info expects the first line to be 1
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lineno = 1
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answer = None
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while 1:
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line = fp.readline()
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if line == '':
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break
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if cre.match(line):
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answer = funcname, filename, lineno
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break
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lineno = lineno + 1
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fp.close()
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return answer
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# Interaction prompt line will separate file and call info from code
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# text using value of line_prefix string. A newline and arrow may
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# be to your liking. You can set it once pdb is imported using the
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# command "pdb.line_prefix = '\n% '".
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# line_prefix = ': ' # Use this to get the old situation back
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line_prefix = '\n-> ' # Probably a better default
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class Pdb(bdb.Bdb, cmd.Cmd):
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def __init__(self, completekey='tab', stdin=None, stdout=None):
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bdb.Bdb.__init__(self)
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cmd.Cmd.__init__(self, completekey, stdin, stdout)
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if stdout:
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self.use_rawinput = 0
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self.prompt = '(Pdb) '
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self.aliases = {}
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self.mainpyfile = ''
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self._wait_for_mainpyfile = 0
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# Try to load readline if it exists
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try:
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import readline
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except ImportError:
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pass
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# Read $HOME/.pdbrc and ./.pdbrc
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self.rcLines = []
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if 'HOME' in os.environ:
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envHome = os.environ['HOME']
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try:
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rcFile = open(os.path.join(envHome, ".pdbrc"))
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except IOError:
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pass
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else:
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for line in rcFile.readlines():
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self.rcLines.append(line)
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rcFile.close()
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try:
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rcFile = open(".pdbrc")
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except IOError:
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pass
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else:
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for line in rcFile.readlines():
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self.rcLines.append(line)
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rcFile.close()
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self.commands = {} # associates a command list to breakpoint numbers
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self.commands_doprompt = {} # for each bp num, tells if the prompt must be disp. after execing the cmd list
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self.commands_silent = {} # for each bp num, tells if the stack trace must be disp. after execing the cmd list
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self.commands_defining = False # True while in the process of defining a command list
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self.commands_bnum = None # The breakpoint number for which we are defining a list
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def reset(self):
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bdb.Bdb.reset(self)
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self.forget()
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def forget(self):
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self.lineno = None
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self.stack = []
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self.curindex = 0
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self.curframe = None
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def setup(self, f, t):
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self.forget()
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self.stack, self.curindex = self.get_stack(f, t)
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self.curframe = self.stack[self.curindex][0]
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self.execRcLines()
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# Can be executed earlier than 'setup' if desired
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def execRcLines(self):
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if self.rcLines:
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# Make local copy because of recursion
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rcLines = self.rcLines
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# executed only once
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self.rcLines = []
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for line in rcLines:
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line = line[:-1]
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if len(line) > 0 and line[0] != '#':
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self.onecmd(line)
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# Override Bdb methods
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def user_call(self, frame, argument_list):
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"""This method is called when there is the remote possibility
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that we ever need to stop in this function."""
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if self._wait_for_mainpyfile:
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return
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if self.stop_here(frame):
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print('--Call--', file=self.stdout)
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self.interaction(frame, None)
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def user_line(self, frame):
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"""This function is called when we stop or break at this line."""
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if self._wait_for_mainpyfile:
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if (self.mainpyfile != self.canonic(frame.f_code.co_filename)
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or frame.f_lineno<= 0):
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return
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self._wait_for_mainpyfile = 0
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if self.bp_commands(frame):
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self.interaction(frame, None)
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def bp_commands(self,frame):
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""" Call every command that was set for the current active breakpoint (if there is one)
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Returns True if the normal interaction function must be called, False otherwise """
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#self.currentbp is set in bdb.py in bdb.break_here if a breakpoint was hit
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if getattr(self,"currentbp",False) and self.currentbp in self.commands:
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currentbp = self.currentbp
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self.currentbp = 0
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lastcmd_back = self.lastcmd
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self.setup(frame, None)
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for line in self.commands[currentbp]:
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self.onecmd(line)
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self.lastcmd = lastcmd_back
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if not self.commands_silent[currentbp]:
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self.print_stack_entry(self.stack[self.curindex])
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if self.commands_doprompt[currentbp]:
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self.cmdloop()
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self.forget()
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return
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return 1
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def user_return(self, frame, return_value):
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"""This function is called when a return trap is set here."""
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frame.f_locals['__return__'] = return_value
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print('--Return--', file=self.stdout)
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self.interaction(frame, None)
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def user_exception(self, frame, exc_info):
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"""This function is called if an exception occurs,
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but only if we are to stop at or just below this level."""
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exc_type, exc_value, exc_traceback = exc_info
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frame.f_locals['__exception__'] = exc_type, exc_value
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exc_type_name = exc_type.__name__
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print(exc_type_name + ':', _saferepr(exc_value), file=self.stdout)
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self.interaction(frame, exc_traceback)
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# General interaction function
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def interaction(self, frame, traceback):
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self.setup(frame, traceback)
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self.print_stack_entry(self.stack[self.curindex])
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self.cmdloop()
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self.forget()
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def default(self, line):
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if line[:1] == '!': line = line[1:]
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locals = self.curframe.f_locals
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globals = self.curframe.f_globals
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try:
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code = compile(line + '\n', '<stdin>', 'single')
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save_stdout = sys.stdout
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save_stdin = sys.stdin
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try:
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sys.stdin = self.stdin
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sys.stdout = self.stdout
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exec(code, globals, locals)
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finally:
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sys.stdout = save_stdout
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sys.stdin = save_stdin
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except:
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t, v = sys.exc_info()[:2]
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if type(t) == type(''):
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exc_type_name = t
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else: exc_type_name = t.__name__
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print('***', exc_type_name + ':', v, file=self.stdout)
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def precmd(self, line):
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"""Handle alias expansion and ';;' separator."""
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if not line.strip():
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return line
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args = line.split()
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while args[0] in self.aliases:
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line = self.aliases[args[0]]
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ii = 1
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for tmpArg in args[1:]:
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line = line.replace("%" + str(ii),
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tmpArg)
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ii = ii + 1
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line = line.replace("%*", ' '.join(args[1:]))
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args = line.split()
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# split into ';;' separated commands
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# unless it's an alias command
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if args[0] != 'alias':
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marker = line.find(';;')
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if marker >= 0:
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# queue up everything after marker
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next = line[marker+2:].lstrip()
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self.cmdqueue.append(next)
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line = line[:marker].rstrip()
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return line
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def onecmd(self, line):
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"""Interpret the argument as though it had been typed in response
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to the prompt.
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Checks whether this line is typed at the normal prompt or in
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a breakpoint command list definition.
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"""
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if not self.commands_defining:
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return cmd.Cmd.onecmd(self, line)
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else:
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return self.handle_command_def(line)
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def handle_command_def(self,line):
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""" Handles one command line during command list definition. """
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cmd, arg, line = self.parseline(line)
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if cmd == 'silent':
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self.commands_silent[self.commands_bnum] = True
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return # continue to handle other cmd def in the cmd list
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elif cmd == 'end':
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self.cmdqueue = []
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return 1 # end of cmd list
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cmdlist = self.commands[self.commands_bnum]
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if (arg):
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cmdlist.append(cmd+' '+arg)
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else:
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cmdlist.append(cmd)
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# Determine if we must stop
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try:
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func = getattr(self, 'do_' + cmd)
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except AttributeError:
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func = self.default
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if func.__name__ in self.commands_resuming : # one of the resuming commands.
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self.commands_doprompt[self.commands_bnum] = False
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self.cmdqueue = []
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return 1
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return
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# Command definitions, called by cmdloop()
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# The argument is the remaining string on the command line
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# Return true to exit from the command loop
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do_h = cmd.Cmd.do_help
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def do_commands(self, arg):
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"""Defines a list of commands associated to a breakpoint
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Those commands will be executed whenever the breakpoint causes the program to stop execution."""
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if not arg:
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bnum = len(bdb.Breakpoint.bpbynumber)-1
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else:
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try:
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bnum = int(arg)
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except:
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print("Usage : commands [bnum]\n ...\n end", file=self.stdout)
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return
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self.commands_bnum = bnum
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self.commands[bnum] = []
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self.commands_doprompt[bnum] = True
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self.commands_silent[bnum] = False
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prompt_back = self.prompt
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self.prompt = '(com) '
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self.commands_defining = True
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self.cmdloop()
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self.commands_defining = False
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self.prompt = prompt_back
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def do_break(self, arg, temporary = 0):
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# break [ ([filename:]lineno | function) [, "condition"] ]
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if not arg:
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if self.breaks: # There's at least one
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print("Num Type Disp Enb Where", file=self.stdout)
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for bp in bdb.Breakpoint.bpbynumber:
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if bp:
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bp.bpprint(self.stdout)
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return
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# parse arguments; comma has lowest precedence
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# and cannot occur in filename
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filename = None
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lineno = None
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cond = None
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comma = arg.find(',')
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if comma > 0:
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# parse stuff after comma: "condition"
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cond = arg[comma+1:].lstrip()
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arg = arg[:comma].rstrip()
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# parse stuff before comma: [filename:]lineno | function
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colon = arg.rfind(':')
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funcname = None
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if colon >= 0:
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filename = arg[:colon].rstrip()
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f = self.lookupmodule(filename)
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if not f:
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print('*** ', repr(filename), end=' ', file=self.stdout)
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print('not found from sys.path', file=self.stdout)
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return
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else:
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filename = f
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arg = arg[colon+1:].lstrip()
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try:
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lineno = int(arg)
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except ValueError as msg:
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print('*** Bad lineno:', arg, file=self.stdout)
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return
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else:
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# no colon; can be lineno or function
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try:
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lineno = int(arg)
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except ValueError:
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try:
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func = eval(arg,
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self.curframe.f_globals,
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self.curframe.f_locals)
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except:
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func = arg
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try:
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if hasattr(func, '__func__'):
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func = func.__func__
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code = func.__code__
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#use co_name to identify the bkpt (function names
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#could be aliased, but co_name is invariant)
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funcname = code.co_name
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lineno = code.co_firstlineno
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filename = code.co_filename
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except:
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# last thing to try
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(ok, filename, ln) = self.lineinfo(arg)
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if not ok:
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print('*** The specified object', end=' ', file=self.stdout)
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print(repr(arg), end=' ', file=self.stdout)
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print('is not a function', file=self.stdout)
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print('or was not found along sys.path.', file=self.stdout)
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return
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funcname = ok # ok contains a function name
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lineno = int(ln)
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if not filename:
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filename = self.defaultFile()
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# Check for reasonable breakpoint
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line = self.checkline(filename, lineno)
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if line:
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# now set the break point
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err = self.set_break(filename, line, temporary, cond, funcname)
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if err: print('***', err, file=self.stdout)
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else:
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bp = self.get_breaks(filename, line)[-1]
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print("Breakpoint %d at %s:%d" % (bp.number,
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bp.file,
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bp.line), file=self.stdout)
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# To be overridden in derived debuggers
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def defaultFile(self):
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"""Produce a reasonable default."""
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filename = self.curframe.f_code.co_filename
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if filename == '<string>' and self.mainpyfile:
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filename = self.mainpyfile
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return filename
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do_b = do_break
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def do_tbreak(self, arg):
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self.do_break(arg, 1)
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def lineinfo(self, identifier):
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failed = (None, None, None)
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# Input is identifier, may be in single quotes
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idstring = identifier.split("'")
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if len(idstring) == 1:
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# not in single quotes
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id = idstring[0].strip()
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elif len(idstring) == 3:
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# quoted
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id = idstring[1].strip()
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else:
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return failed
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if id == '': return failed
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parts = id.split('.')
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# Protection for derived debuggers
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if parts[0] == 'self':
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del parts[0]
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if len(parts) == 0:
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return failed
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# Best first guess at file to look at
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fname = self.defaultFile()
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if len(parts) == 1:
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item = parts[0]
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else:
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# More than one part.
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# First is module, second is method/class
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f = self.lookupmodule(parts[0])
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if f:
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fname = f
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item = parts[1]
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answer = find_function(item, fname)
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return answer or failed
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def checkline(self, filename, lineno):
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"""Check whether specified line seems to be executable.
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Return `lineno` if it is, 0 if not (e.g. a docstring, comment, blank
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line or EOF). Warning: testing is not comprehensive.
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"""
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line = linecache.getline(filename, lineno)
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if not line:
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print('End of file', file=self.stdout)
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return 0
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line = line.strip()
|
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# Don't allow setting breakpoint at a blank line
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|
if (not line or (line[0] == '#') or
|
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(line[:3] == '"""') or line[:3] == "'''"):
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print('*** Blank or comment', file=self.stdout)
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return 0
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return lineno
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|
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def do_enable(self, arg):
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args = arg.split()
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for i in args:
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try:
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i = int(i)
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except ValueError:
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print('Breakpoint index %r is not a number' % i, file=self.stdout)
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continue
|
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|
|
if not (0 <= i < len(bdb.Breakpoint.bpbynumber)):
|
|
print('No breakpoint numbered', i, file=self.stdout)
|
|
continue
|
|
|
|
bp = bdb.Breakpoint.bpbynumber[i]
|
|
if bp:
|
|
bp.enable()
|
|
|
|
def do_disable(self, arg):
|
|
args = arg.split()
|
|
for i in args:
|
|
try:
|
|
i = int(i)
|
|
except ValueError:
|
|
print('Breakpoint index %r is not a number' % i, file=self.stdout)
|
|
continue
|
|
|
|
if not (0 <= i < len(bdb.Breakpoint.bpbynumber)):
|
|
print('No breakpoint numbered', i, file=self.stdout)
|
|
continue
|
|
|
|
bp = bdb.Breakpoint.bpbynumber[i]
|
|
if bp:
|
|
bp.disable()
|
|
|
|
def do_condition(self, arg):
|
|
# arg is breakpoint number and condition
|
|
args = arg.split(' ', 1)
|
|
try:
|
|
bpnum = int(args[0].strip())
|
|
except ValueError:
|
|
# something went wrong
|
|
print('Breakpoint index %r is not a number' % args[0], file=self.stdout)
|
|
return
|
|
try:
|
|
cond = args[1]
|
|
except:
|
|
cond = None
|
|
try:
|
|
bp = bdb.Breakpoint.bpbynumber[bpnum]
|
|
except IndexError:
|
|
print >>self.stdout, 'Breakpoint index %r is not valid' % args[0]
|
|
return
|
|
if bp:
|
|
bp.cond = cond
|
|
if not cond:
|
|
print('Breakpoint', bpnum, end=' ', file=self.stdout)
|
|
print('is now unconditional.', file=self.stdout)
|
|
|
|
def do_ignore(self,arg):
|
|
"""arg is bp number followed by ignore count."""
|
|
args = arg.split()
|
|
try:
|
|
bpnum = int(args[0].strip())
|
|
except ValueError:
|
|
# something went wrong
|
|
print('Breakpoint index %r is not a number' % args[0], file=self.stdout)
|
|
return
|
|
try:
|
|
count = int(args[1].strip())
|
|
except:
|
|
count = 0
|
|
try:
|
|
bp = bdb.Breakpoint.bpbynumber[bpnum]
|
|
except IndexError:
|
|
print >>self.stdout, 'Breakpoint index %r is not valid' % args[0]
|
|
return
|
|
if bp:
|
|
bp.ignore = count
|
|
if count > 0:
|
|
reply = 'Will ignore next '
|
|
if count > 1:
|
|
reply = reply + '%d crossings' % count
|
|
else:
|
|
reply = reply + '1 crossing'
|
|
print(reply + ' of breakpoint %d.' % bpnum, file=self.stdout)
|
|
else:
|
|
print('Will stop next time breakpoint', end=' ', file=self.stdout)
|
|
print(bpnum, 'is reached.', file=self.stdout)
|
|
|
|
def do_clear(self, arg):
|
|
"""Three possibilities, tried in this order:
|
|
clear -> clear all breaks, ask for confirmation
|
|
clear file:lineno -> clear all breaks at file:lineno
|
|
clear bpno bpno ... -> clear breakpoints by number"""
|
|
if not arg:
|
|
try:
|
|
reply = input('Clear all breaks? ')
|
|
except EOFError:
|
|
reply = 'no'
|
|
reply = reply.strip().lower()
|
|
if reply in ('y', 'yes'):
|
|
self.clear_all_breaks()
|
|
return
|
|
if ':' in arg:
|
|
# Make sure it works for "clear C:\foo\bar.py:12"
|
|
i = arg.rfind(':')
|
|
filename = arg[:i]
|
|
arg = arg[i+1:]
|
|
try:
|
|
lineno = int(arg)
|
|
except ValueError:
|
|
err = "Invalid line number (%s)" % arg
|
|
else:
|
|
err = self.clear_break(filename, lineno)
|
|
if err: print('***', err, file=self.stdout)
|
|
return
|
|
numberlist = arg.split()
|
|
for i in numberlist:
|
|
try:
|
|
i = int(i)
|
|
except ValueError:
|
|
print('Breakpoint index %r is not a number' % i, file=self.stdout)
|
|
continue
|
|
|
|
if not (0 <= i < len(bdb.Breakpoint.bpbynumber)):
|
|
print('No breakpoint numbered', i, file=self.stdout)
|
|
continue
|
|
err = self.clear_bpbynumber(i)
|
|
if err:
|
|
print('***', err, file=self.stdout)
|
|
else:
|
|
print('Deleted breakpoint', i, file=self.stdout)
|
|
do_cl = do_clear # 'c' is already an abbreviation for 'continue'
|
|
|
|
def do_where(self, arg):
|
|
self.print_stack_trace()
|
|
do_w = do_where
|
|
do_bt = do_where
|
|
|
|
def do_up(self, arg):
|
|
if self.curindex == 0:
|
|
print('*** Oldest frame', file=self.stdout)
|
|
else:
|
|
self.curindex = self.curindex - 1
|
|
self.curframe = self.stack[self.curindex][0]
|
|
self.print_stack_entry(self.stack[self.curindex])
|
|
self.lineno = None
|
|
do_u = do_up
|
|
|
|
def do_down(self, arg):
|
|
if self.curindex + 1 == len(self.stack):
|
|
print('*** Newest frame', file=self.stdout)
|
|
else:
|
|
self.curindex = self.curindex + 1
|
|
self.curframe = self.stack[self.curindex][0]
|
|
self.print_stack_entry(self.stack[self.curindex])
|
|
self.lineno = None
|
|
do_d = do_down
|
|
|
|
def do_step(self, arg):
|
|
self.set_step()
|
|
return 1
|
|
do_s = do_step
|
|
|
|
def do_next(self, arg):
|
|
self.set_next(self.curframe)
|
|
return 1
|
|
do_n = do_next
|
|
|
|
def do_run(self, arg):
|
|
"""Restart program by raising an exception to be caught in the main debugger
|
|
loop. If arguments were given, set them in sys.argv."""
|
|
if arg:
|
|
import shlex
|
|
argv0 = sys.argv[0:1]
|
|
sys.argv = shlex.split(arg)
|
|
sys.argv[:0] = argv0
|
|
raise Restart
|
|
|
|
do_restart = do_run
|
|
|
|
def do_return(self, arg):
|
|
self.set_return(self.curframe)
|
|
return 1
|
|
do_r = do_return
|
|
|
|
def do_continue(self, arg):
|
|
self.set_continue()
|
|
return 1
|
|
do_c = do_cont = do_continue
|
|
|
|
def do_jump(self, arg):
|
|
if self.curindex + 1 != len(self.stack):
|
|
print("*** You can only jump within the bottom frame", file=self.stdout)
|
|
return
|
|
try:
|
|
arg = int(arg)
|
|
except ValueError:
|
|
print("*** The 'jump' command requires a line number.", file=self.stdout)
|
|
else:
|
|
try:
|
|
# Do the jump, fix up our copy of the stack, and display the
|
|
# new position
|
|
self.curframe.f_lineno = arg
|
|
self.stack[self.curindex] = self.stack[self.curindex][0], arg
|
|
self.print_stack_entry(self.stack[self.curindex])
|
|
except ValueError as e:
|
|
print('*** Jump failed:', e, file=self.stdout)
|
|
do_j = do_jump
|
|
|
|
def do_debug(self, arg):
|
|
sys.settrace(None)
|
|
globals = self.curframe.f_globals
|
|
locals = self.curframe.f_locals
|
|
p = Pdb(self.completekey, self.stdin, self.stdout)
|
|
p.prompt = "(%s) " % self.prompt.strip()
|
|
print("ENTERING RECURSIVE DEBUGGER", file=self.stdout)
|
|
sys.call_tracing(p.run, (arg, globals, locals))
|
|
print("LEAVING RECURSIVE DEBUGGER", file=self.stdout)
|
|
sys.settrace(self.trace_dispatch)
|
|
self.lastcmd = p.lastcmd
|
|
|
|
def do_quit(self, arg):
|
|
self._user_requested_quit = 1
|
|
self.set_quit()
|
|
return 1
|
|
|
|
do_q = do_quit
|
|
do_exit = do_quit
|
|
|
|
def do_EOF(self, arg):
|
|
print(file=self.stdout)
|
|
self._user_requested_quit = 1
|
|
self.set_quit()
|
|
return 1
|
|
|
|
def do_args(self, arg):
|
|
f = self.curframe
|
|
co = f.f_code
|
|
dict = f.f_locals
|
|
n = co.co_argcount
|
|
if co.co_flags & 4: n = n+1
|
|
if co.co_flags & 8: n = n+1
|
|
for i in range(n):
|
|
name = co.co_varnames[i]
|
|
print(name, '=', end=' ', file=self.stdout)
|
|
if name in dict: print(dict[name], file=self.stdout)
|
|
else: print("*** undefined ***", file=self.stdout)
|
|
do_a = do_args
|
|
|
|
def do_retval(self, arg):
|
|
if '__return__' in self.curframe.f_locals:
|
|
print(self.curframe.f_locals['__return__'], file=self.stdout)
|
|
else:
|
|
print('*** Not yet returned!', file=self.stdout)
|
|
do_rv = do_retval
|
|
|
|
def _getval(self, arg):
|
|
try:
|
|
return eval(arg, self.curframe.f_globals,
|
|
self.curframe.f_locals)
|
|
except:
|
|
t, v = sys.exc_info()[:2]
|
|
if isinstance(t, str):
|
|
exc_type_name = t
|
|
else: exc_type_name = t.__name__
|
|
print('***', exc_type_name + ':', repr(v), file=self.stdout)
|
|
raise
|
|
|
|
def do_p(self, arg):
|
|
try:
|
|
print(repr(self._getval(arg)), file=self.stdout)
|
|
except:
|
|
pass
|
|
# make "print" an alias of "p" since print isn't a Python statement anymore
|
|
do_print = do_p
|
|
|
|
def do_pp(self, arg):
|
|
try:
|
|
pprint.pprint(self._getval(arg), self.stdout)
|
|
except:
|
|
pass
|
|
|
|
def do_list(self, arg):
|
|
self.lastcmd = 'list'
|
|
last = None
|
|
if arg:
|
|
try:
|
|
x = eval(arg, {}, {})
|
|
if type(x) == type(()):
|
|
first, last = x
|
|
first = int(first)
|
|
last = int(last)
|
|
if last < first:
|
|
# Assume it's a count
|
|
last = first + last
|
|
else:
|
|
first = max(1, int(x) - 5)
|
|
except:
|
|
print('*** Error in argument:', repr(arg), file=self.stdout)
|
|
return
|
|
elif self.lineno is None:
|
|
first = max(1, self.curframe.f_lineno - 5)
|
|
else:
|
|
first = self.lineno + 1
|
|
if last is None:
|
|
last = first + 10
|
|
filename = self.curframe.f_code.co_filename
|
|
breaklist = self.get_file_breaks(filename)
|
|
try:
|
|
for lineno in range(first, last+1):
|
|
line = linecache.getline(filename, lineno)
|
|
if not line:
|
|
print('[EOF]', file=self.stdout)
|
|
break
|
|
else:
|
|
s = repr(lineno).rjust(3)
|
|
if len(s) < 4: s = s + ' '
|
|
if lineno in breaklist: s = s + 'B'
|
|
else: s = s + ' '
|
|
if lineno == self.curframe.f_lineno:
|
|
s = s + '->'
|
|
print(s + '\t' + line, end='', file=self.stdout)
|
|
self.lineno = lineno
|
|
except KeyboardInterrupt:
|
|
pass
|
|
do_l = do_list
|
|
|
|
def do_whatis(self, arg):
|
|
try:
|
|
value = eval(arg, self.curframe.f_globals,
|
|
self.curframe.f_locals)
|
|
except:
|
|
t, v = sys.exc_info()[:2]
|
|
if type(t) == type(''):
|
|
exc_type_name = t
|
|
else: exc_type_name = t.__name__
|
|
print('***', exc_type_name + ':', repr(v), file=self.stdout)
|
|
return
|
|
code = None
|
|
# Is it a function?
|
|
try: code = value.__code__
|
|
except: pass
|
|
if code:
|
|
print('Function', code.co_name, file=self.stdout)
|
|
return
|
|
# Is it an instance method?
|
|
try: code = value.__func__.__code__
|
|
except: pass
|
|
if code:
|
|
print('Method', code.co_name, file=self.stdout)
|
|
return
|
|
# None of the above...
|
|
print(type(value), file=self.stdout)
|
|
|
|
def do_alias(self, arg):
|
|
args = arg.split()
|
|
if len(args) == 0:
|
|
keys = self.aliases.keys()
|
|
keys.sort()
|
|
for alias in keys:
|
|
print("%s = %s" % (alias, self.aliases[alias]), file=self.stdout)
|
|
return
|
|
if args[0] in self.aliases and len(args) == 1:
|
|
print("%s = %s" % (args[0], self.aliases[args[0]]), file=self.stdout)
|
|
else:
|
|
self.aliases[args[0]] = ' '.join(args[1:])
|
|
|
|
def do_unalias(self, arg):
|
|
args = arg.split()
|
|
if len(args) == 0: return
|
|
if args[0] in self.aliases:
|
|
del self.aliases[args[0]]
|
|
|
|
#list of all the commands making the program resume execution.
|
|
commands_resuming = ['do_continue', 'do_step', 'do_next', 'do_return',
|
|
'do_quit', 'do_jump']
|
|
|
|
# Print a traceback starting at the top stack frame.
|
|
# The most recently entered frame is printed last;
|
|
# this is different from dbx and gdb, but consistent with
|
|
# the Python interpreter's stack trace.
|
|
# It is also consistent with the up/down commands (which are
|
|
# compatible with dbx and gdb: up moves towards 'main()'
|
|
# and down moves towards the most recent stack frame).
|
|
|
|
def print_stack_trace(self):
|
|
try:
|
|
for frame_lineno in self.stack:
|
|
self.print_stack_entry(frame_lineno)
|
|
except KeyboardInterrupt:
|
|
pass
|
|
|
|
def print_stack_entry(self, frame_lineno, prompt_prefix=line_prefix):
|
|
frame, lineno = frame_lineno
|
|
if frame is self.curframe:
|
|
print('>', end=' ', file=self.stdout)
|
|
else:
|
|
print(' ', end=' ', file=self.stdout)
|
|
print(self.format_stack_entry(frame_lineno,
|
|
prompt_prefix), file=self.stdout)
|
|
|
|
|
|
# Help methods (derived from pdb.doc)
|
|
|
|
def help_help(self):
|
|
self.help_h()
|
|
|
|
def help_h(self):
|
|
print("""h(elp)
|
|
Without argument, print the list of available commands.
|
|
With a command name as argument, print help about that command
|
|
"help pdb" pipes the full documentation file to the $PAGER
|
|
"help exec" gives help on the ! command""", file=self.stdout)
|
|
|
|
def help_where(self):
|
|
self.help_w()
|
|
|
|
def help_w(self):
|
|
print("""w(here)
|
|
Print a stack trace, with the most recent frame at the bottom.
|
|
An arrow indicates the "current frame", which determines the
|
|
context of most commands. 'bt' is an alias for this command.""", file=self.stdout)
|
|
|
|
help_bt = help_w
|
|
|
|
def help_down(self):
|
|
self.help_d()
|
|
|
|
def help_d(self):
|
|
print("""d(own)
|
|
Move the current frame one level down in the stack trace
|
|
(to a newer frame).""", file=self.stdout)
|
|
|
|
def help_up(self):
|
|
self.help_u()
|
|
|
|
def help_u(self):
|
|
print("""u(p)
|
|
Move the current frame one level up in the stack trace
|
|
(to an older frame).""", file=self.stdout)
|
|
|
|
def help_break(self):
|
|
self.help_b()
|
|
|
|
def help_b(self):
|
|
print("""b(reak) ([file:]lineno | function) [, condition]
|
|
With a line number argument, set a break there in the current
|
|
file. With a function name, set a break at first executable line
|
|
of that function. Without argument, list all breaks. If a second
|
|
argument is present, it is a string specifying an expression
|
|
which must evaluate to true before the breakpoint is honored.
|
|
|
|
The line number may be prefixed with a filename and a colon,
|
|
to specify a breakpoint in another file (probably one that
|
|
hasn't been loaded yet). The file is searched for on sys.path;
|
|
the .py suffix may be omitted.""", file=self.stdout)
|
|
|
|
def help_clear(self):
|
|
self.help_cl()
|
|
|
|
def help_cl(self):
|
|
print("cl(ear) filename:lineno", file=self.stdout)
|
|
print("""cl(ear) [bpnumber [bpnumber...]]
|
|
With a space separated list of breakpoint numbers, clear
|
|
those breakpoints. Without argument, clear all breaks (but
|
|
first ask confirmation). With a filename:lineno argument,
|
|
clear all breaks at that line in that file.""", file=self.stdout)
|
|
|
|
def help_tbreak(self):
|
|
print("""tbreak same arguments as break, but breakpoint is
|
|
removed when first hit.""", file=self.stdout)
|
|
|
|
def help_enable(self):
|
|
print("""enable bpnumber [bpnumber ...]
|
|
Enables the breakpoints given as a space separated list of
|
|
bp numbers.""", file=self.stdout)
|
|
|
|
def help_disable(self):
|
|
print("""disable bpnumber [bpnumber ...]
|
|
Disables the breakpoints given as a space separated list of
|
|
bp numbers.""", file=self.stdout)
|
|
|
|
def help_ignore(self):
|
|
print("""ignore bpnumber count
|
|
Sets the ignore count for the given breakpoint number. A breakpoint
|
|
becomes active when the ignore count is zero. When non-zero, the
|
|
count is decremented each time the breakpoint is reached and the
|
|
breakpoint is not disabled and any associated condition evaluates
|
|
to true.""", file=self.stdout)
|
|
|
|
def help_condition(self):
|
|
print("""condition bpnumber str_condition
|
|
str_condition is a string specifying an expression which
|
|
must evaluate to true before the breakpoint is honored.
|
|
If str_condition is absent, any existing condition is removed;
|
|
i.e., the breakpoint is made unconditional.""", file=self.stdout)
|
|
|
|
def help_step(self):
|
|
self.help_s()
|
|
|
|
def help_s(self):
|
|
print("""s(tep)
|
|
Execute the current line, stop at the first possible occasion
|
|
(either in a function that is called or in the current function).""", file=self.stdout)
|
|
|
|
def help_next(self):
|
|
self.help_n()
|
|
|
|
def help_n(self):
|
|
print("""n(ext)
|
|
Continue execution until the next line in the current function
|
|
is reached or it returns.""", file=self.stdout)
|
|
|
|
def help_return(self):
|
|
self.help_r()
|
|
|
|
def help_r(self):
|
|
print("""r(eturn)
|
|
Continue execution until the current function returns.""", file=self.stdout)
|
|
|
|
def help_continue(self):
|
|
self.help_c()
|
|
|
|
def help_cont(self):
|
|
self.help_c()
|
|
|
|
def help_c(self):
|
|
print("""c(ont(inue))
|
|
Continue execution, only stop when a breakpoint is encountered.""", file=self.stdout)
|
|
|
|
def help_jump(self):
|
|
self.help_j()
|
|
|
|
def help_j(self):
|
|
print("""j(ump) lineno
|
|
Set the next line that will be executed.""", file=self.stdout)
|
|
|
|
def help_debug(self):
|
|
print("""debug code
|
|
Enter a recursive debugger that steps through the code argument
|
|
(which is an arbitrary expression or statement to be executed
|
|
in the current environment).""", file=self.stdout)
|
|
|
|
def help_list(self):
|
|
self.help_l()
|
|
|
|
def help_l(self):
|
|
print("""l(ist) [first [,last]]
|
|
List source code for the current file.
|
|
Without arguments, list 11 lines around the current line
|
|
or continue the previous listing.
|
|
With one argument, list 11 lines starting at that line.
|
|
With two arguments, list the given range;
|
|
if the second argument is less than the first, it is a count.""", file=self.stdout)
|
|
|
|
def help_args(self):
|
|
self.help_a()
|
|
|
|
def help_a(self):
|
|
print("""a(rgs)
|
|
Print the arguments of the current function.""", file=self.stdout)
|
|
|
|
def help_p(self):
|
|
print("""p(rint) expression
|
|
Print the value of the expression.""", file=self.stdout)
|
|
|
|
def help_pp(self):
|
|
print("""pp expression
|
|
Pretty-print the value of the expression.""", file=self.stdout)
|
|
|
|
def help_exec(self):
|
|
print("""(!) statement
|
|
Execute the (one-line) statement in the context of
|
|
the current stack frame.
|
|
The exclamation point can be omitted unless the first word
|
|
of the statement resembles a debugger command.
|
|
To assign to a global variable you must always prefix the
|
|
command with a 'global' command, e.g.:
|
|
(Pdb) global list_options; list_options = ['-l']
|
|
(Pdb)""", file=self.stdout)
|
|
|
|
def help_run(self):
|
|
print("""run [args...]
|
|
Restart the debugged python program. If a string is supplied, it is
|
|
splitted with "shlex" and the result is used as the new sys.argv.
|
|
History, breakpoints, actions and debugger options are preserved.
|
|
"restart" is an alias for "run".""")
|
|
|
|
help_restart = help_run
|
|
|
|
def help_quit(self):
|
|
self.help_q()
|
|
|
|
def help_q(self):
|
|
print("""q(uit) or exit - Quit from the debugger.
|
|
The program being executed is aborted.""", file=self.stdout)
|
|
|
|
help_exit = help_q
|
|
|
|
def help_whatis(self):
|
|
print("""whatis arg
|
|
Prints the type of the argument.""", file=self.stdout)
|
|
|
|
def help_EOF(self):
|
|
print("""EOF
|
|
Handles the receipt of EOF as a command.""", file=self.stdout)
|
|
|
|
def help_alias(self):
|
|
print("""alias [name [command [parameter parameter ...] ]]
|
|
Creates an alias called 'name' the executes 'command'. The command
|
|
must *not* be enclosed in quotes. Replaceable parameters are
|
|
indicated by %1, %2, and so on, while %* is replaced by all the
|
|
parameters. If no command is given, the current alias for name
|
|
is shown. If no name is given, all aliases are listed.
|
|
|
|
Aliases may be nested and can contain anything that can be
|
|
legally typed at the pdb prompt. Note! You *can* override
|
|
internal pdb commands with aliases! Those internal commands
|
|
are then hidden until the alias is removed. Aliasing is recursively
|
|
applied to the first word of the command line; all other words
|
|
in the line are left alone.
|
|
|
|
Some useful aliases (especially when placed in the .pdbrc file) are:
|
|
|
|
#Print instance variables (usage "pi classInst")
|
|
alias pi for k in %1.__dict__.keys(): print "%1.",k,"=",%1.__dict__[k]
|
|
|
|
#Print instance variables in self
|
|
alias ps pi self
|
|
""", file=self.stdout)
|
|
|
|
def help_unalias(self):
|
|
print("""unalias name
|
|
Deletes the specified alias.""", file=self.stdout)
|
|
|
|
def help_commands(self):
|
|
print("""commands [bpnumber]
|
|
(com) ...
|
|
(com) end
|
|
(Pdb)
|
|
|
|
Specify a list of commands for breakpoint number bpnumber. The
|
|
commands themselves appear on the following lines. Type a line
|
|
containing just 'end' to terminate the commands.
|
|
|
|
To remove all commands from a breakpoint, type commands and
|
|
follow it immediately with end; that is, give no commands.
|
|
|
|
With no bpnumber argument, commands refers to the last
|
|
breakpoint set.
|
|
|
|
You can use breakpoint commands to start your program up again.
|
|
Simply use the continue command, or step, or any other
|
|
command that resumes execution.
|
|
|
|
Specifying any command resuming execution (currently continue,
|
|
step, next, return, jump, quit and their abbreviations) terminates
|
|
the command list (as if that command was immediately followed by end).
|
|
This is because any time you resume execution
|
|
(even with a simple next or step), you may encounter
|
|
another breakpoint--which could have its own command list, leading to
|
|
ambiguities about which list to execute.
|
|
|
|
If you use the 'silent' command in the command list, the
|
|
usual message about stopping at a breakpoint is not printed. This may
|
|
be desirable for breakpoints that are to print a specific message and
|
|
then continue. If none of the other commands print anything, you
|
|
see no sign that the breakpoint was reached.
|
|
""", file=self.stdout)
|
|
|
|
def help_pdb(self):
|
|
help()
|
|
|
|
def lookupmodule(self, filename):
|
|
"""Helper function for break/clear parsing -- may be overridden.
|
|
|
|
lookupmodule() translates (possibly incomplete) file or module name
|
|
into an absolute file name.
|
|
"""
|
|
if os.path.isabs(filename) and os.path.exists(filename):
|
|
return filename
|
|
f = os.path.join(sys.path[0], filename)
|
|
if os.path.exists(f) and self.canonic(f) == self.mainpyfile:
|
|
return f
|
|
root, ext = os.path.splitext(filename)
|
|
if ext == '':
|
|
filename = filename + '.py'
|
|
if os.path.isabs(filename):
|
|
return filename
|
|
for dirname in sys.path:
|
|
while os.path.islink(dirname):
|
|
dirname = os.readlink(dirname)
|
|
fullname = os.path.join(dirname, filename)
|
|
if os.path.exists(fullname):
|
|
return fullname
|
|
return None
|
|
|
|
def _runscript(self, filename):
|
|
# The script has to run in __main__ namespace (or imports from
|
|
# __main__ will break).
|
|
#
|
|
# So we clear up the __main__ and set several special variables
|
|
# (this gets rid of pdb's globals and cleans old variables on restarts).
|
|
import __main__
|
|
__main__.__dict__.clear()
|
|
__main__.__dict__.update({"__name__" : "__main__",
|
|
"__file__" : filename,
|
|
"__builtins__": __builtins__,
|
|
})
|
|
|
|
# When bdb sets tracing, a number of call and line events happens
|
|
# BEFORE debugger even reaches user's code (and the exact sequence of
|
|
# events depends on python version). So we take special measures to
|
|
# avoid stopping before we reach the main script (see user_line and
|
|
# user_call for details).
|
|
self._wait_for_mainpyfile = 1
|
|
self.mainpyfile = self.canonic(filename)
|
|
self._user_requested_quit = 0
|
|
with open(filename) as fp:
|
|
statement = fp.read()
|
|
self.run(statement)
|
|
|
|
# Simplified interface
|
|
|
|
def run(statement, globals=None, locals=None):
|
|
Pdb().run(statement, globals, locals)
|
|
|
|
def runeval(expression, globals=None, locals=None):
|
|
return Pdb().runeval(expression, globals, locals)
|
|
|
|
def runctx(statement, globals, locals):
|
|
# B/W compatibility
|
|
run(statement, globals, locals)
|
|
|
|
def runcall(*args, **kwds):
|
|
return Pdb().runcall(*args, **kwds)
|
|
|
|
def set_trace():
|
|
Pdb().set_trace(sys._getframe().f_back)
|
|
|
|
# Post-Mortem interface
|
|
|
|
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 = Pdb()
|
|
p.reset()
|
|
while t.tb_next is not None:
|
|
t = t.tb_next
|
|
p.interaction(t.tb_frame, t)
|
|
|
|
def pm():
|
|
post_mortem(sys.last_traceback)
|
|
|
|
|
|
# Main program for testing
|
|
|
|
TESTCMD = 'import x; x.main()'
|
|
|
|
def test():
|
|
run(TESTCMD)
|
|
|
|
# print help
|
|
def help():
|
|
for dirname in sys.path:
|
|
fullname = os.path.join(dirname, 'pdb.doc')
|
|
if os.path.exists(fullname):
|
|
sts = os.system('${PAGER-more} '+fullname)
|
|
if sts: print('*** Pager exit status:', sts)
|
|
break
|
|
else:
|
|
print('Sorry, can\'t find the help file "pdb.doc"', end=' ')
|
|
print('along the Python search path')
|
|
|
|
def main():
|
|
if not sys.argv[1:] or sys.argv[1] in ("--help", "-h"):
|
|
print("usage: pdb.py scriptfile [arg] ...")
|
|
sys.exit(2)
|
|
|
|
mainpyfile = sys.argv[1] # Get script filename
|
|
if not os.path.exists(mainpyfile):
|
|
print('Error:', mainpyfile, 'does not exist')
|
|
sys.exit(1)
|
|
|
|
del sys.argv[0] # Hide "pdb.py" from argument list
|
|
|
|
# Replace pdb's dir with script's dir in front of module search path.
|
|
sys.path[0] = os.path.dirname(mainpyfile)
|
|
|
|
# Note on saving/restoring sys.argv: it's a good idea when sys.argv was
|
|
# modified by the script being debugged. It's a bad idea when it was
|
|
# changed by the user from the command line. There is a "restart" command which
|
|
# allows explicit specification of command line arguments.
|
|
pdb = Pdb()
|
|
while 1:
|
|
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: ", end=' ')
|
|
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]
|
|
while t.tb_next is not None:
|
|
t = t.tb_next
|
|
pdb.interaction(t.tb_frame,t)
|
|
print("Post mortem debugger finished. The "+mainpyfile+" will be restarted")
|
|
|
|
|
|
# When invoked as main program, invoke the debugger on a script
|
|
if __name__ == '__main__':
|
|
import pdb
|
|
pdb.main()
|