mirror of
https://github.com/python/cpython.git
synced 2024-11-24 18:34:43 +08:00
89a78697b8
* Many modules: fixes for new, stricter, argument passing rules (most changes were automatic ones -- not all of this is tested!). * gwin.py: now uses mainloop.py for its main loop and window admin. * mainloop.py: always call dispatch() with event as a tuple! * Fix bug in pdb's 'clear' command -- don't set the bpt but clear it!
286 lines
6.5 KiB
Python
Executable File
286 lines
6.5 KiB
Python
Executable File
# pdb.py -- finally, a Python debugger!
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# (See pdb.doc for documentation.)
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import string
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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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import repr
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class Pdb(bdb.Bdb, cmd.Cmd):
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def init(self):
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self = bdb.Bdb.init(self)
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self = cmd.Cmd.init(self)
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self.prompt = '(Pdb) '
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return self
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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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# Override Bdb methods (except user_call, for now)
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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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self.interaction(frame, None)
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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--'
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self.interaction(frame, None)
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def user_exception(self, frame, (exc_type, exc_value, exc_traceback)):
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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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frame.f_locals['__exception__'] = exc_type, exc_value
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print exc_type + ':', repr.repr(exc_value)
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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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exec(line + '\n', globals, locals)
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except:
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print '***', sys.exc_type + ':', sys.exc_value
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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_break(self, arg):
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if not arg:
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print self.get_all_breaks() # XXX
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return
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try:
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lineno = int(eval(arg))
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except:
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print '*** Error in argument:', `arg`
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return
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filename = self.curframe.f_code.co_filename
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err = self.set_break(filename, lineno)
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if err: print '***', err
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do_b = do_break
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def do_clear(self, arg):
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if not arg:
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try:
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reply = raw_input('Clear all breaks? ')
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except EOFError:
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reply = 'no'
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reply = string.lower(string.strip(reply))
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if reply in ('y', 'yes'):
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self.clear_all_breaks()
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return
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try:
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lineno = int(eval(arg))
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except:
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print '*** Error in argument:', `arg`
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return
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filename = self.curframe.f_code.co_filename
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err = self.clear_break(filename, lineno)
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if err: print '***', err
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do_cl = do_clear # 'c' is already an abbreviation for 'continue'
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def do_where(self, arg):
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self.print_stack_trace()
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do_w = do_where
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def do_up(self, arg):
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if self.curindex == 0:
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print '*** Oldest frame'
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else:
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self.curindex = self.curindex - 1
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self.curframe = self.stack[self.curindex][0]
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self.print_stack_entry(self.stack[self.curindex])
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self.lineno = None
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do_u = do_up
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def do_down(self, arg):
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if self.curindex + 1 == len(self.stack):
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print '*** Newest frame'
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else:
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self.curindex = self.curindex + 1
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self.curframe = self.stack[self.curindex][0]
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self.print_stack_entry(self.stack[self.curindex])
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self.lineno = None
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do_d = do_down
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def do_step(self, arg):
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self.set_step()
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return 1
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do_s = do_step
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def do_next(self, arg):
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self.set_next(self.curframe)
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return 1
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do_n = do_next
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def do_return(self, arg):
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self.set_return(self.curframe)
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return 1
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do_r = do_return
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def do_continue(self, arg):
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self.set_continue()
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return 1
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do_c = do_cont = do_continue
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def do_quit(self, arg):
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self.set_quit()
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return 1
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do_q = do_quit
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def do_args(self, arg):
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if self.curframe.f_locals.has_key('__return__'):
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print `self.curframe.f_locals['__return__']`
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else:
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print '*** Not arguments?!'
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do_a = do_args
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def do_retval(self, arg):
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if self.curframe.f_locals.has_key('__return__'):
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print self.curframe.f_locals['__return__']
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else:
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print '*** Not yet returned!'
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do_rv = do_retval
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def do_p(self, arg):
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try:
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value = eval(arg, self.curframe.f_globals, \
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self.curframe.f_locals)
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except:
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print '***', sys.exc_type + ':', `sys.exc_value`
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return
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print `value`
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def do_list(self, arg):
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self.lastcmd = 'list'
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last = None
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if arg:
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try:
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x = eval(arg, {}, {})
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if type(x) == type(()):
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first, last = x
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first = int(first)
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last = int(last)
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if last < first:
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# Assume it's a count
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last = first + last
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else:
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first = max(1, int(x) - 5)
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except:
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print '*** Error in argument:', `arg`
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return
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elif self.lineno is None:
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first = max(1, self.curframe.f_lineno - 5)
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else:
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first = self.lineno + 1
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if last == None:
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last = first + 10
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filename = self.curframe.f_code.co_filename
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breaklist = self.get_file_breaks(filename)
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try:
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for lineno in range(first, last+1):
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line = linecache.getline(filename, lineno)
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if not line:
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print '[EOF]'
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break
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else:
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s = string.rjust(`lineno`, 3)
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if len(s) < 4: s = s + ' '
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if lineno in breaklist: s = s + 'B'
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else: s = s + ' '
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if lineno == self.curframe.f_lineno:
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s = s + '->'
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print s + '\t' + line,
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self.lineno = lineno
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except KeyboardInterrupt:
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pass
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do_l = do_list
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# Print a traceback starting at the top stack frame.
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# The most recently entered frame is printed last;
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# this is different from dbx and gdb, but consistent with
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# the Python interpreter's stack trace.
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# It is also consistent with the up/down commands (which are
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# compatible with dbx and gdb: up moves towards 'main()'
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# and down moves towards the most recent stack frame).
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def print_stack_trace(self):
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try:
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for frame_lineno in self.stack:
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self.print_stack_entry(frame_lineno)
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except KeyboardInterrupt:
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pass
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def print_stack_entry(self, frame_lineno):
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frame, lineno = frame_lineno
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if frame is self.curframe:
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print '>',
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else:
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print ' ',
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print self.format_stack_entry(frame_lineno)
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# Simplified interface
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def run(statement):
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Pdb().init().run(statement)
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def runctx(statement, globals, locals):
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Pdb().init().runctx(statement, globals, locals)
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def runcall(*args):
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apply(Pdb().init().runcall, args)
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# Post-Mortem interface
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def post_mortem(t):
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p = Pdb().init()
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p.reset()
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while t.tb_next <> None: t = t.tb_next
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p.interaction(t.tb_frame, t)
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def pm():
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import sys
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post_mortem(sys.last_traceback)
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# Main program for testing
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TESTCMD = 'import x; x.main()'
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def test():
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import linecache
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linecache.checkcache()
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run(TESTCMD)
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