# wdb.py -- a window-based Python debugger
# XXX To do:
# - don't fall out of bottom frame
import stdwin
from stdwinevents import *
import sys
import basewin
import bdb
import repr
WIDTH = 40
HEIGHT = 8
WdbDone = 'wdb.WdbDone' # Exception to continue execution
class Wdb(bdb.Bdb, basewin.BaseWindow): # Window debugger
def __init__(self):
self.sourcewindows = {}
self.framewindows = {}
bdb.Bdb.__init__(self)
width = WIDTH*stdwin.textwidth('0')
height = HEIGHT*stdwin.lineheight()
stdwin.setdefwinsize(width, height)
basewin.BaseWindow.__init__(self, '--Stack--')
self.closed = 0
def reset(self):
if self.closed: raise RuntimeError, 'already closed'
bdb.Bdb.reset(self)
self.forget()
def forget(self):
self.lineno = None
self.stack = []
self.curindex = 0
self.curframe = None
for fn in self.sourcewindows.keys():
self.sourcewindows[fn].resetlineno()
def setup(self, f, t):
self.forget()
self.stack, self.curindex = self.get_stack(f, t)
self.curframe = self.stack[self.curindex][0]
# Build a list of current frames
cfl = []
for f, i in self.stack: cfl.append(f)
# Remove deactivated frame windows
for name in self.framewindows.keys():
fw = self.framewindows[name]
if fw.frame not in cfl: fw.close()
else: fw.refreshframe()
# Refresh the stack window
self.refreshstack()
# 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
self.settitle('--Return--')
self.interaction(frame, None)
if not self.closed:
self.settitle('--Stack--')
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
if type(exc_type) == type(''):
exc_type_name = exc_type
else: exc_type_name = exc_type.__name__
self.settitle(exc_type_name + ': ' + repr.repr(exc_value))
stdwin.fleep()
self.interaction(frame, exc_traceback)
if not self.closed:
self.settitle('--Stack--')
# Change the title
def settitle(self, title):
self.savetitle = self.win.gettitle()
self.win.settitle(title)
# General interaction function
def interaction(self, frame, traceback):
import mainloop
self.popup()
self.setup(frame, traceback)
try:
mainloop.mainloop()
except WdbDone:
pass
self.forget()
# Functions whose name is do_X for some character X
# are callable directly from the keyboard.
def do_up(self):
if self.curindex == 0:
stdwin.fleep()
else:
self.curindex = self.curindex - 1
self.curframe = self.stack[self.curindex][0]
self.refreshstack()
do_u = do_up
def do_down(self):
if self.curindex + 1 == len(self.stack):
stdwin.fleep()
else:
self.curindex = self.curindex + 1
self.curframe = self.stack[self.curindex][0]
self.refreshstack()
do_d = do_down
def do_step(self):
self.set_step()
raise WdbDone
do_s = do_step
def do_next(self):
self.set_next(self.curframe)
raise WdbDone
do_n = do_next
def do_return(self):
self.set_return(self.curframe)
raise WdbDone
do_r = do_return
def do_continue(self):
self.set_continue()
raise WdbDone
do_c = do_cont = do_continue
def do_quit(self):
self.close()
raise WdbDone
do_q = do_quit
def do_list(self):
fn = self.curframe.f_code.co_filename
if not self.sourcewindows.has_key(fn):
import wdbsrcwin
try:
self.sourcewindows[fn] = wdbsrcwin. \
DebuggerSourceWindow(self, fn)
except IOError:
stdwin.fleep()
return
w = self.sourcewindows[fn]
lineno = self.stack[self.curindex][1]
w.setlineno(lineno)
w.popup()
do_l = do_list
def do_frame(self):
name = 'locals' + `self.curframe`[16:-1]
if self.framewindows.has_key(name):
self.framewindows[name].popup()
else:
import wdbframewin
self.framewindows[name] = \
wdbframewin.FrameWindow(self, \
self.curframe, \
self.curframe.f_locals, name)
do_f = do_frame
def do_globalframe(self):
name = 'globals' + `self.curframe`[16:-1]
if self.framewindows.has_key(name):
self.framewindows[name].popup()
else:
import wdbframewin
self.framewindows[name] = \
wdbframewin.FrameWindow(self, \
self.curframe, \
self.curframe.f_globals, name)
do_g = do_globalframe
# Link between the debugger and the window
def refreshstack(self):
height = stdwin.lineheight() * (1 + len(self.stack))
self.win.setdocsize((0, height))
self.refreshall() # XXX be more subtle later
# Also pass the information on to the source windows
filename = self.curframe.f_code.co_filename
lineno = self.curframe.f_lineno
for fn in self.sourcewindows.keys():
w = self.sourcewindows[fn]
if fn == filename:
w.setlineno(lineno)
else:
w.resetlineno()
# The remaining methods override BaseWindow methods
def close(self):
if not self.closed:
basewin.BaseWindow.close(self)
self.closed = 1
for key in self.sourcewindows.keys():
self.sourcewindows[key].close()
for key in self.framewindows.keys():
self.framewindows[key].close()
self.set_quit()
def char(self, detail):
try:
func = eval('self.do_' + detail)
except (AttributeError, SyntaxError):
stdwin.fleep()
return
func()
def command(self, detail):
if detail == WC_UP:
self.do_up()
elif detail == WC_DOWN:
self.do_down()
def mouse_down(self, detail):
(h, v), clicks, button, mask = detail
i = v / stdwin.lineheight()
if 0 <= i < len(self.stack):
if i != self.curindex:
self.curindex = i
self.curframe = self.stack[self.curindex][0]
self.refreshstack()
elif clicks == 2:
self.do_frame()
else:
stdwin.fleep()
def draw(self, detail):
import linecache, string
d = self.win.begindrawing()
try:
h, v = 0, 0
for f, lineno in self.stack:
fn = f.f_code.co_filename
if f is self.curframe:
s = '> '
else:
s = ' '
s = s + fn + '(' + `lineno` + ')'
s = s + f.f_code.co_name
if f.f_locals.has_key('__args__'):
args = f.f_locals['__args__']
if args is not None:
s = s + repr.repr(args)
if f.f_locals.has_key('__return__'):
rv = f.f_locals['__return__']
s = s + '->'
s = s + repr.repr(rv)
line = linecache.getline(fn, lineno)
if line: s = s + ': ' + string.strip(line)
d.text((h, v), s)
v = v + d.lineheight()
finally:
d.close()
# Simplified interface
def run(statement, globals=None, locals=None):
x = Wdb()
try: x.run(statement, globals, locals)
finally: x.close()
def runeval(expression, globals=None, locals=None):
x = Wdb()
try: return x.runeval(expression, globals, locals)
finally: x.close()
def runctx(statement, globals, locals):
# B/W compatibility
run(statement, globals, locals)
def runcall(*args):
x = Wdb()
try: return apply(x.runcall, args)
finally: x.close()
def set_trace():
Wdb().set_trace()
# Post-Mortem interface
def post_mortem(traceback):
x = Wdb()
x.reset()
x.interaction(None, traceback)
def pm():
import sys
post_mortem(sys.last_traceback)
# Main program for testing
TESTCMD = 'import x; x.main()'
def test():
run(TESTCMD)
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