--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/symbian-qemu-0.9.1-12/python-win32-2.6.1/lib/pdb.py Fri Jul 31 15:01:17 2009 +0100
@@ -0,0 +1,1297 @@
+#! /usr/bin/env python
+
+"""A Python debugger."""
+
+# (See pdb.doc for documentation.)
+
+import sys
+import linecache
+import cmd
+import bdb
+from repr import Repr
+import os
+import re
+import pprint
+import traceback
+
+
+class Restart(Exception):
+ """Causes a debugger to be restarted for the debugged python program."""
+ pass
+
+# Create a custom safe Repr instance and increase its maxstring.
+# The default of 30 truncates error messages too easily.
+_repr = Repr()
+_repr.maxstring = 200
+_saferepr = _repr.repr
+
+__all__ = ["run", "pm", "Pdb", "runeval", "runctx", "runcall", "set_trace",
+ "post_mortem", "help"]
+
+def find_function(funcname, filename):
+ cre = re.compile(r'def\s+%s\s*[(]' % re.escape(funcname))
+ try:
+ fp = open(filename)
+ except IOError:
+ return None
+ # consumer of this info expects the first line to be 1
+ lineno = 1
+ answer = None
+ while 1:
+ line = fp.readline()
+ if line == '':
+ break
+ if cre.match(line):
+ answer = funcname, filename, lineno
+ break
+ lineno = lineno + 1
+ fp.close()
+ return answer
+
+
+# Interaction prompt line will separate file and call info from code
+# text using value of line_prefix string. A newline and arrow may
+# be to your liking. You can set it once pdb is imported using the
+# command "pdb.line_prefix = '\n% '".
+# line_prefix = ': ' # Use this to get the old situation back
+line_prefix = '\n-> ' # Probably a better default
+
+class Pdb(bdb.Bdb, cmd.Cmd):
+
+ def __init__(self, completekey='tab', stdin=None, stdout=None):
+ bdb.Bdb.__init__(self)
+ cmd.Cmd.__init__(self, completekey, stdin, stdout)
+ if stdout:
+ self.use_rawinput = 0
+ self.prompt = '(Pdb) '
+ self.aliases = {}
+ self.mainpyfile = ''
+ self._wait_for_mainpyfile = 0
+ # Try to load readline if it exists
+ try:
+ import readline
+ except ImportError:
+ pass
+
+ # Read $HOME/.pdbrc and ./.pdbrc
+ self.rcLines = []
+ if 'HOME' in os.environ:
+ envHome = os.environ['HOME']
+ try:
+ rcFile = open(os.path.join(envHome, ".pdbrc"))
+ except IOError:
+ pass
+ else:
+ for line in rcFile.readlines():
+ self.rcLines.append(line)
+ rcFile.close()
+ try:
+ rcFile = open(".pdbrc")
+ except IOError:
+ pass
+ else:
+ for line in rcFile.readlines():
+ self.rcLines.append(line)
+ rcFile.close()
+
+ self.commands = {} # associates a command list to breakpoint numbers
+ self.commands_doprompt = {} # for each bp num, tells if the prompt must be disp. after execing the cmd list
+ self.commands_silent = {} # for each bp num, tells if the stack trace must be disp. after execing the cmd list
+ self.commands_defining = False # True while in the process of defining a command list
+ self.commands_bnum = None # The breakpoint number for which we are defining a list
+
+ def reset(self):
+ bdb.Bdb.reset(self)
+ self.forget()
+
+ def forget(self):
+ self.lineno = None
+ self.stack = []
+ self.curindex = 0
+ self.curframe = None
+
+ def setup(self, f, t):
+ self.forget()
+ self.stack, self.curindex = self.get_stack(f, t)
+ self.curframe = self.stack[self.curindex][0]
+ self.execRcLines()
+
+ # Can be executed earlier than 'setup' if desired
+ def execRcLines(self):
+ if self.rcLines:
+ # Make local copy because of recursion
+ rcLines = self.rcLines
+ # executed only once
+ self.rcLines = []
+ for line in rcLines:
+ line = line[:-1]
+ if len(line) > 0 and line[0] != '#':
+ self.onecmd(line)
+
+ # Override Bdb methods
+
+ def user_call(self, frame, argument_list):
+ """This method is called when there is the remote possibility
+ that we ever need to stop in this function."""
+ if self._wait_for_mainpyfile:
+ return
+ if self.stop_here(frame):
+ print >>self.stdout, '--Call--'
+ self.interaction(frame, None)
+
+ def user_line(self, frame):
+ """This function is called when we stop or break at this line."""
+ if self._wait_for_mainpyfile:
+ if (self.mainpyfile != self.canonic(frame.f_code.co_filename)
+ or frame.f_lineno<= 0):
+ return
+ self._wait_for_mainpyfile = 0
+ if self.bp_commands(frame):
+ self.interaction(frame, None)
+
+ def bp_commands(self,frame):
+ """ Call every command that was set for the current active breakpoint (if there is one)
+ Returns True if the normal interaction function must be called, False otherwise """
+ #self.currentbp is set in bdb.py in bdb.break_here if a breakpoint was hit
+ if getattr(self,"currentbp",False) and self.currentbp in self.commands:
+ currentbp = self.currentbp
+ self.currentbp = 0
+ lastcmd_back = self.lastcmd
+ self.setup(frame, None)
+ for line in self.commands[currentbp]:
+ self.onecmd(line)
+ self.lastcmd = lastcmd_back
+ if not self.commands_silent[currentbp]:
+ self.print_stack_entry(self.stack[self.curindex])
+ if self.commands_doprompt[currentbp]:
+ self.cmdloop()
+ self.forget()
+ return
+ return 1
+
+ def user_return(self, frame, return_value):
+ """This function is called when a return trap is set here."""
+ frame.f_locals['__return__'] = return_value
+ print >>self.stdout, '--Return--'
+ self.interaction(frame, None)
+
+ def user_exception(self, frame, exc_info):
+ exc_type, exc_value, exc_traceback = exc_info
+ """This function is called if an exception occurs,
+ but only if we are to stop at or just below this level."""
+ frame.f_locals['__exception__'] = exc_type, exc_value
+ if type(exc_type) == type(''):
+ exc_type_name = exc_type
+ else: exc_type_name = exc_type.__name__
+ print >>self.stdout, exc_type_name + ':', _saferepr(exc_value)
+ self.interaction(frame, exc_traceback)
+
+ # General interaction function
+
+ def interaction(self, frame, traceback):
+ self.setup(frame, traceback)
+ self.print_stack_entry(self.stack[self.curindex])
+ self.cmdloop()
+ self.forget()
+
+ def default(self, line):
+ if line[:1] == '!': line = line[1:]
+ locals = self.curframe.f_locals
+ globals = self.curframe.f_globals
+ try:
+ code = compile(line + '\n', '<stdin>', 'single')
+ save_stdout = sys.stdout
+ save_stdin = sys.stdin
+ try:
+ sys.stdin = self.stdin
+ sys.stdout = self.stdout
+ exec code in globals, locals
+ finally:
+ sys.stdout = save_stdout
+ sys.stdin = save_stdin
+ except:
+ t, v = sys.exc_info()[:2]
+ if type(t) == type(''):
+ exc_type_name = t
+ else: exc_type_name = t.__name__
+ print >>self.stdout, '***', exc_type_name + ':', v
+
+ def precmd(self, line):
+ """Handle alias expansion and ';;' separator."""
+ if not line.strip():
+ return line
+ args = line.split()
+ while args[0] in self.aliases:
+ line = self.aliases[args[0]]
+ ii = 1
+ for tmpArg in args[1:]:
+ line = line.replace("%" + str(ii),
+ tmpArg)
+ ii = ii + 1
+ line = line.replace("%*", ' '.join(args[1:]))
+ args = line.split()
+ # split into ';;' separated commands
+ # unless it's an alias command
+ if args[0] != 'alias':
+ marker = line.find(';;')
+ if marker >= 0:
+ # queue up everything after marker
+ next = line[marker+2:].lstrip()
+ self.cmdqueue.append(next)
+ line = line[:marker].rstrip()
+ return line
+
+ def onecmd(self, line):
+ """Interpret the argument as though it had been typed in response
+ to the prompt.
+
+ Checks whether this line is typed at the normal prompt or in
+ a breakpoint command list definition.
+ """
+ if not self.commands_defining:
+ return cmd.Cmd.onecmd(self, line)
+ else:
+ return self.handle_command_def(line)
+
+ def handle_command_def(self,line):
+ """ Handles one command line during command list definition. """
+ cmd, arg, line = self.parseline(line)
+ if cmd == 'silent':
+ self.commands_silent[self.commands_bnum] = True
+ return # continue to handle other cmd def in the cmd list
+ elif cmd == 'end':
+ self.cmdqueue = []
+ return 1 # end of cmd list
+ cmdlist = self.commands[self.commands_bnum]
+ if (arg):
+ cmdlist.append(cmd+' '+arg)
+ else:
+ cmdlist.append(cmd)
+ # Determine if we must stop
+ try:
+ func = getattr(self, 'do_' + cmd)
+ except AttributeError:
+ func = self.default
+ if func.func_name in self.commands_resuming : # one of the resuming commands.
+ self.commands_doprompt[self.commands_bnum] = False
+ self.cmdqueue = []
+ return 1
+ return
+
+ # Command definitions, called by cmdloop()
+ # The argument is the remaining string on the command line
+ # Return true to exit from the command loop
+
+ do_h = cmd.Cmd.do_help
+
+ def do_commands(self, arg):
+ """Defines a list of commands associated to a breakpoint
+ Those commands will be executed whenever the breakpoint causes the program to stop execution."""
+ if not arg:
+ bnum = len(bdb.Breakpoint.bpbynumber)-1
+ else:
+ try:
+ bnum = int(arg)
+ except:
+ print >>self.stdout, "Usage : commands [bnum]\n ...\n end"
+ return
+ self.commands_bnum = bnum
+ self.commands[bnum] = []
+ self.commands_doprompt[bnum] = True
+ self.commands_silent[bnum] = False
+ prompt_back = self.prompt
+ self.prompt = '(com) '
+ self.commands_defining = True
+ self.cmdloop()
+ self.commands_defining = False
+ self.prompt = prompt_back
+
+ def do_break(self, arg, temporary = 0):
+ # break [ ([filename:]lineno | function) [, "condition"] ]
+ if not arg:
+ if self.breaks: # There's at least one
+ print >>self.stdout, "Num Type Disp Enb Where"
+ for bp in bdb.Breakpoint.bpbynumber:
+ if bp:
+ bp.bpprint(self.stdout)
+ return
+ # parse arguments; comma has lowest precedence
+ # and cannot occur in filename
+ filename = None
+ lineno = None
+ cond = None
+ comma = arg.find(',')
+ if comma > 0:
+ # parse stuff after comma: "condition"
+ cond = arg[comma+1:].lstrip()
+ arg = arg[:comma].rstrip()
+ # parse stuff before comma: [filename:]lineno | function
+ colon = arg.rfind(':')
+ funcname = None
+ if colon >= 0:
+ filename = arg[:colon].rstrip()
+ f = self.lookupmodule(filename)
+ if not f:
+ print >>self.stdout, '*** ', repr(filename),
+ print >>self.stdout, 'not found from sys.path'
+ return
+ else:
+ filename = f
+ arg = arg[colon+1:].lstrip()
+ try:
+ lineno = int(arg)
+ except ValueError, msg:
+ print >>self.stdout, '*** Bad lineno:', arg
+ return
+ else:
+ # no colon; can be lineno or function
+ try:
+ lineno = int(arg)
+ except ValueError:
+ try:
+ func = eval(arg,
+ self.curframe.f_globals,
+ self.curframe.f_locals)
+ except:
+ func = arg
+ try:
+ if hasattr(func, 'im_func'):
+ func = func.im_func
+ code = func.func_code
+ #use co_name to identify the bkpt (function names
+ #could be aliased, but co_name is invariant)
+ funcname = code.co_name
+ lineno = code.co_firstlineno
+ filename = code.co_filename
+ except:
+ # last thing to try
+ (ok, filename, ln) = self.lineinfo(arg)
+ if not ok:
+ print >>self.stdout, '*** The specified object',
+ print >>self.stdout, repr(arg),
+ print >>self.stdout, 'is not a function'
+ print >>self.stdout, 'or was not found along sys.path.'
+ return
+ funcname = ok # ok contains a function name
+ lineno = int(ln)
+ if not filename:
+ filename = self.defaultFile()
+ # Check for reasonable breakpoint
+ line = self.checkline(filename, lineno)
+ if line:
+ # now set the break point
+ err = self.set_break(filename, line, temporary, cond, funcname)
+ if err: print >>self.stdout, '***', err
+ else:
+ bp = self.get_breaks(filename, line)[-1]
+ print >>self.stdout, "Breakpoint %d at %s:%d" % (bp.number,
+ bp.file,
+ bp.line)
+
+ # To be overridden in derived debuggers
+ def defaultFile(self):
+ """Produce a reasonable default."""
+ filename = self.curframe.f_code.co_filename
+ if filename == '<string>' and self.mainpyfile:
+ filename = self.mainpyfile
+ return filename
+
+ do_b = do_break
+
+ def do_tbreak(self, arg):
+ self.do_break(arg, 1)
+
+ def lineinfo(self, identifier):
+ failed = (None, None, None)
+ # Input is identifier, may be in single quotes
+ idstring = identifier.split("'")
+ if len(idstring) == 1:
+ # not in single quotes
+ id = idstring[0].strip()
+ elif len(idstring) == 3:
+ # quoted
+ id = idstring[1].strip()
+ else:
+ return failed
+ if id == '': return failed
+ parts = id.split('.')
+ # Protection for derived debuggers
+ if parts[0] == 'self':
+ del parts[0]
+ if len(parts) == 0:
+ return failed
+ # Best first guess at file to look at
+ fname = self.defaultFile()
+ if len(parts) == 1:
+ item = parts[0]
+ else:
+ # More than one part.
+ # First is module, second is method/class
+ f = self.lookupmodule(parts[0])
+ if f:
+ fname = f
+ item = parts[1]
+ answer = find_function(item, fname)
+ return answer or failed
+
+ def checkline(self, filename, lineno):
+ """Check whether specified line seems to be executable.
+
+ Return `lineno` if it is, 0 if not (e.g. a docstring, comment, blank
+ line or EOF). Warning: testing is not comprehensive.
+ """
+ line = linecache.getline(filename, lineno)
+ if not line:
+ print >>self.stdout, 'End of file'
+ return 0
+ line = line.strip()
+ # Don't allow setting breakpoint at a blank line
+ if (not line or (line[0] == '#') or
+ (line[:3] == '"""') or line[:3] == "'''"):
+ print >>self.stdout, '*** Blank or comment'
+ return 0
+ return lineno
+
+ def do_enable(self, arg):
+ args = arg.split()
+ for i in args:
+ try:
+ i = int(i)
+ except ValueError:
+ print >>self.stdout, 'Breakpoint index %r is not a number' % i
+ continue
+
+ if not (0 <= i < len(bdb.Breakpoint.bpbynumber)):
+ print >>self.stdout, 'No breakpoint numbered', i
+ 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 >>self.stdout, 'Breakpoint index %r is not a number' % i
+ continue
+
+ if not (0 <= i < len(bdb.Breakpoint.bpbynumber)):
+ print >>self.stdout, 'No breakpoint numbered', i
+ 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 >>self.stdout, \
+ 'Breakpoint index %r is not a number' % args[0]
+ 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 >>self.stdout, 'Breakpoint', bpnum,
+ print >>self.stdout, 'is now unconditional.'
+
+ 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 >>self.stdout, \
+ 'Breakpoint index %r is not a number' % args[0]
+ 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 >>self.stdout, reply + ' of breakpoint %d.' % bpnum
+ else:
+ print >>self.stdout, 'Will stop next time breakpoint',
+ print >>self.stdout, bpnum, 'is reached.'
+
+ 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 = raw_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 >>self.stdout, '***', err
+ return
+ numberlist = arg.split()
+ for i in numberlist:
+ try:
+ i = int(i)
+ except ValueError:
+ print >>self.stdout, 'Breakpoint index %r is not a number' % i
+ continue
+
+ if not (0 <= i < len(bdb.Breakpoint.bpbynumber)):
+ print >>self.stdout, 'No breakpoint numbered', i
+ continue
+ err = self.clear_bpbynumber(i)
+ if err:
+ print >>self.stdout, '***', err
+ else:
+ print >>self.stdout, 'Deleted breakpoint', i
+ 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 >>self.stdout, '*** Oldest frame'
+ 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 >>self.stdout, '*** Newest frame'
+ 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_until(self, arg):
+ self.set_until(self.curframe)
+ return 1
+ do_unt = do_until
+
+ 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 >>self.stdout, "*** You can only jump within the bottom frame"
+ return
+ try:
+ arg = int(arg)
+ except ValueError:
+ print >>self.stdout, "*** The 'jump' command requires a line number."
+ 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, e:
+ print >>self.stdout, '*** Jump failed:', e
+ 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 >>self.stdout, "ENTERING RECURSIVE DEBUGGER"
+ sys.call_tracing(p.run, (arg, globals, locals))
+ print >>self.stdout, "LEAVING RECURSIVE DEBUGGER"
+ 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 >>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 >>self.stdout, name, '=',
+ if name in dict: print >>self.stdout, dict[name]
+ else: print >>self.stdout, "*** undefined ***"
+ do_a = do_args
+
+ def do_retval(self, arg):
+ if '__return__' in self.curframe.f_locals:
+ print >>self.stdout, self.curframe.f_locals['__return__']
+ else:
+ print >>self.stdout, '*** Not yet returned!'
+ 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 >>self.stdout, '***', exc_type_name + ':', repr(v)
+ raise
+
+ def do_p(self, arg):
+ try:
+ print >>self.stdout, repr(self._getval(arg))
+ except:
+ pass
+
+ 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 >>self.stdout, '*** Error in argument:', repr(arg)
+ 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 >>self.stdout, '[EOF]'
+ 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 >>self.stdout, s + '\t' + line,
+ 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 >>self.stdout, '***', exc_type_name + ':', repr(v)
+ return
+ code = None
+ # Is it a function?
+ try: code = value.func_code
+ except: pass
+ if code:
+ print >>self.stdout, 'Function', code.co_name
+ return
+ # Is it an instance method?
+ try: code = value.im_func.func_code
+ except: pass
+ if code:
+ print >>self.stdout, 'Method', code.co_name
+ return
+ # None of the above...
+ print >>self.stdout, type(value)
+
+ def do_alias(self, arg):
+ args = arg.split()
+ if len(args) == 0:
+ keys = self.aliases.keys()
+ keys.sort()
+ for alias in keys:
+ print >>self.stdout, "%s = %s" % (alias, self.aliases[alias])
+ return
+ if args[0] in self.aliases and len(args) == 1:
+ print >>self.stdout, "%s = %s" % (args[0], self.aliases[args[0]])
+ 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 >>self.stdout, '>',
+ else:
+ print >>self.stdout, ' ',
+ print >>self.stdout, self.format_stack_entry(frame_lineno,
+ prompt_prefix)
+
+
+ # Help methods (derived from pdb.doc)
+
+ def help_help(self):
+ self.help_h()
+
+ def help_h(self):
+ print >>self.stdout, """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"""
+
+ def help_where(self):
+ self.help_w()
+
+ def help_w(self):
+ print >>self.stdout, """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."""
+
+ help_bt = help_w
+
+ def help_down(self):
+ self.help_d()
+
+ def help_d(self):
+ print >>self.stdout, """d(own)
+Move the current frame one level down in the stack trace
+(to a newer frame)."""
+
+ def help_up(self):
+ self.help_u()
+
+ def help_u(self):
+ print >>self.stdout, """u(p)
+Move the current frame one level up in the stack trace
+(to an older frame)."""
+
+ def help_break(self):
+ self.help_b()
+
+ def help_b(self):
+ print >>self.stdout, """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."""
+
+ def help_clear(self):
+ self.help_cl()
+
+ def help_cl(self):
+ print >>self.stdout, "cl(ear) filename:lineno"
+ print >>self.stdout, """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.
+
+Note that the argument is different from previous versions of
+the debugger (in python distributions 1.5.1 and before) where
+a linenumber was used instead of either filename:lineno or
+breakpoint numbers."""
+
+ def help_tbreak(self):
+ print >>self.stdout, """tbreak same arguments as break, but breakpoint is
+removed when first hit."""
+
+ def help_enable(self):
+ print >>self.stdout, """enable bpnumber [bpnumber ...]
+Enables the breakpoints given as a space separated list of
+bp numbers."""
+
+ def help_disable(self):
+ print >>self.stdout, """disable bpnumber [bpnumber ...]
+Disables the breakpoints given as a space separated list of
+bp numbers."""
+
+ def help_ignore(self):
+ print >>self.stdout, """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."""
+
+ def help_condition(self):
+ print >>self.stdout, """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."""
+
+ def help_step(self):
+ self.help_s()
+
+ def help_s(self):
+ print >>self.stdout, """s(tep)
+Execute the current line, stop at the first possible occasion
+(either in a function that is called or in the current function)."""
+
+ def help_until(self):
+ self.help_unt()
+
+ def help_unt(self):
+ print """unt(il)
+Continue execution until the line with a number greater than the current
+one is reached or until the current frame returns"""
+
+ def help_next(self):
+ self.help_n()
+
+ def help_n(self):
+ print >>self.stdout, """n(ext)
+Continue execution until the next line in the current function
+is reached or it returns."""
+
+ def help_return(self):
+ self.help_r()
+
+ def help_r(self):
+ print >>self.stdout, """r(eturn)
+Continue execution until the current function returns."""
+
+ def help_continue(self):
+ self.help_c()
+
+ def help_cont(self):
+ self.help_c()
+
+ def help_c(self):
+ print >>self.stdout, """c(ont(inue))
+Continue execution, only stop when a breakpoint is encountered."""
+
+ def help_jump(self):
+ self.help_j()
+
+ def help_j(self):
+ print >>self.stdout, """j(ump) lineno
+Set the next line that will be executed."""
+
+ def help_debug(self):
+ print >>self.stdout, """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)."""
+
+ def help_list(self):
+ self.help_l()
+
+ def help_l(self):
+ print >>self.stdout, """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."""
+
+ def help_args(self):
+ self.help_a()
+
+ def help_a(self):
+ print >>self.stdout, """a(rgs)
+Print the arguments of the current function."""
+
+ def help_p(self):
+ print >>self.stdout, """p expression
+Print the value of the expression."""
+
+ def help_pp(self):
+ print >>self.stdout, """pp expression
+Pretty-print the value of the expression."""
+
+ def help_exec(self):
+ print >>self.stdout, """(!) 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)"""
+
+ 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 >>self.stdout, """q(uit) or exit - Quit from the debugger.
+The program being executed is aborted."""
+
+ help_exit = help_q
+
+ def help_whatis(self):
+ print >>self.stdout, """whatis arg
+Prints the type of the argument."""
+
+ def help_EOF(self):
+ print >>self.stdout, """EOF
+Handles the receipt of EOF as a command."""
+
+ def help_alias(self):
+ print >>self.stdout, """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
+"""
+
+ def help_unalias(self):
+ print >>self.stdout, """unalias name
+Deletes the specified alias."""
+
+ def help_commands(self):
+ print >>self.stdout, """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.
+"""
+
+ 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
+ statement = 'execfile( "%s")' % filename
+ 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()
+ p.interaction(None, 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"',
+ 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: ",
+ 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"
+
+
+# When invoked as main program, invoke the debugger on a script
+if __name__ == '__main__':
+ import pdb
+ pdb.main()