mirror of
https://github.com/python/cpython.git
synced 2024-12-12 11:23:56 +08:00
263 lines
6.2 KiB
Python
Executable File
263 lines
6.2 KiB
Python
Executable File
# pdb.py -- finally, a Python debugger!
|
|
|
|
# (See pdb.doc for documentation.)
|
|
|
|
import string
|
|
import sys
|
|
import linecache
|
|
import cmd
|
|
import bdb
|
|
import repr
|
|
|
|
|
|
class Pdb(bdb.Bdb, cmd.Cmd):
|
|
|
|
def init(self):
|
|
self = bdb.Bdb.init(self)
|
|
self = cmd.Cmd.init(self)
|
|
self.prompt = '(Pdb) '
|
|
return self
|
|
|
|
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]
|
|
|
|
# Override Bdb methods (except user_call, for now)
|
|
|
|
def user_line(self, frame):
|
|
# This function is called when we stop or break at this line
|
|
self.interaction(frame, None)
|
|
|
|
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 '--Return--'
|
|
self.interaction(frame, None)
|
|
|
|
def user_exception(self, frame, (exc_type, exc_value, exc_traceback)):
|
|
# 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
|
|
print exc_type + ':', repr.repr(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:
|
|
exec(line + '\n', globals, locals)
|
|
except:
|
|
print '***', sys.exc_type + ':', sys.exc_value
|
|
|
|
# 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_break(self, arg):
|
|
if not arg:
|
|
print self.get_all_breaks() # XXX
|
|
return
|
|
try:
|
|
lineno = int(eval(arg))
|
|
except:
|
|
print '*** Error in argument:', `arg`
|
|
return
|
|
filename = self.curframe.f_code.co_filename
|
|
err = self.set_break(filename, lineno)
|
|
if err: print '***', err
|
|
do_b = do_break
|
|
|
|
def do_clear(self, arg):
|
|
if not arg:
|
|
try:
|
|
reply = raw_input('Clear all breaks? ')
|
|
except EOFError:
|
|
reply = 'no'
|
|
reply = string.lower(string.strip(reply))
|
|
if reply in ('y', 'yes'):
|
|
self.clear_all_breaks()
|
|
return
|
|
try:
|
|
lineno = int(eval(arg))
|
|
except:
|
|
print '*** Error in argument:', `arg`
|
|
return
|
|
filename = self.curframe.f_code.co_filename
|
|
err = self.set_break(filename, lineno)
|
|
if err: print '***', err
|
|
do_cl = do_clear # 'c' is already an abbreviation for 'continue'
|
|
|
|
def do_where(self, arg):
|
|
self.print_stack_trace()
|
|
do_w = do_where
|
|
|
|
def do_up(self, arg):
|
|
if self.curindex == 0:
|
|
print '*** Oldest frame'
|
|
else:
|
|
self.curindex = self.curindex - 1
|
|
self.curframe = self.stack[self.curindex][0]
|
|
self.print_stack_entry(self.stack[self.curindex])
|
|
do_u = do_up
|
|
|
|
def do_down(self, arg):
|
|
if self.curindex + 1 == len(self.stack):
|
|
print '*** Newest frame'
|
|
else:
|
|
self.curindex = self.curindex + 1
|
|
self.curframe = self.stack[self.curindex][0]
|
|
self.print_stack_entry(self.stack[self.curindex])
|
|
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_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_quit(self, arg):
|
|
self.set_quit()
|
|
return 1
|
|
do_q = do_quit
|
|
|
|
def do_args(self, arg):
|
|
if self.curframe.f_locals.has_key('__return__'):
|
|
print `self.curframe.f_locals['__return__']`
|
|
else:
|
|
print '*** Not arguments?!'
|
|
do_a = do_args
|
|
|
|
def do_retval(self, arg):
|
|
if self.curframe.f_locals.has_key('__return__'):
|
|
print self.curframe.f_locals['__return__']
|
|
else:
|
|
print '*** Not yet returned!'
|
|
do_rv = do_retval
|
|
|
|
def do_p(self, arg):
|
|
try:
|
|
value = eval(arg, self.curframe.f_globals, \
|
|
self.curframe.f_locals)
|
|
except:
|
|
print '***', sys.exc_type + ':', `sys.exc_value`
|
|
return
|
|
print `value`
|
|
|
|
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 = int(x)
|
|
except:
|
|
print '*** Error in argument:', `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 '[EOF]'
|
|
break
|
|
else:
|
|
s = string.rjust(`lineno`, 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,
|
|
self.lineno = lineno
|
|
except KeyboardInterrupt:
|
|
pass
|
|
do_l = do_list
|
|
|
|
# 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):
|
|
frame, lineno = frame_lineno
|
|
if frame is self.curframe:
|
|
print '>',
|
|
else:
|
|
print ' ',
|
|
print self.format_stack_entry(frame_lineno)
|
|
|
|
|
|
def run(statement):
|
|
Pdb().init().run(statement)
|
|
|
|
def runctx(statement, globals, locals):
|
|
Pdb().init().runctx(statement, globals, locals)
|
|
|
|
TESTCMD = 'import x; x.main()'
|
|
|
|
def test():
|
|
import linecache
|
|
linecache.checkcache()
|
|
run(TESTCMD)
|