summaryrefslogtreecommitdiffstats
path: root/Lib/idlelib/Debugger.py
blob: 5f851821768fbc59690cfb5593a7cb7648d0fb25 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
import os
import bdb
import types
from Tkinter import *
from WindowList import ListedToplevel
from ScrolledList import ScrolledList


class Idb(bdb.Bdb):

    def __init__(self, gui):
        self.gui = gui
        bdb.Bdb.__init__(self)

    def user_line(self, frame):

        co_filename = frame.f_code.co_filename
##        co_name = frame.f_code.co_name

        ## print>>sys.__stderr__, "*function: ", frame.f_code.co_name
        ## print>>sys.__stderr__, "*file: ", frame.f_code.co_filename
        ## print>>sys.__stderr__, "*line number: ", frame.f_code.co_firstlineno
        ## print>>sys.__stderr__, "*name: ", co_name
        ## print>>sys.__stderr__, "*function: ", frame.f_locals.get(co_name,None)

##         try:
##             # XXX 12 Dec 2002 CGT TO DO: Find way to get a reference to the
##             # XXX currently running function. If the function has an
##             #     attribute called "DebuggerStepThrough", prevent the debugger
##             #     from stepping through Idle code. The following doesn't work
##             #     in instance methods. Hard coded some workarounds.
##             func = frame.f_locals[co_name]
##             if getattr(func, "DebuggerStepThrough", 0):
##                 print "XXXX DEBUGGER STEPPING THROUGH"
##                 self.set_step()
##                 return
##         except:
##             pass

        # workaround for the problem above
        exclude = ('rpc.py', 'threading.py', '<string>')
        for rpcfile in exclude:
            if co_filename.count(rpcfile):
                self.set_step()
                return
        message = self.__frame2message(frame)
        self.gui.interaction(message, frame)

    def user_exception(self, frame, info):
        message = self.__frame2message(frame)
        self.gui.interaction(message, frame, info)

    def __frame2message(self, frame):
        code = frame.f_code
        filename = code.co_filename
        lineno = frame.f_lineno
        basename = os.path.basename(filename)
        message = "%s:%s" % (basename, lineno)
        if code.co_name != "?":
            message = "%s: %s()" % (message, code.co_name)
        return message


class Debugger:

    vstack = vsource = vlocals = vglobals = None

    def __init__(self, pyshell, idb=None):
        if idb is None:
            idb = Idb(self)
        self.pyshell = pyshell
        self.idb = idb
        self.frame = None
        self.make_gui()
        self.interacting = 0

    def run(self, *args):
        try:
            self.interacting = 1
            return self.idb.run(*args)
        finally:
            self.interacting = 0

    def close(self, event=None):
        if self.interacting:
            self.top.bell()
            return
        if self.stackviewer:
            self.stackviewer.close(); self.stackviewer = None
        # Clean up pyshell if user clicked debugger control close widget.
        # (Causes a harmless extra cycle through close_debugger() if user
        # toggled debugger from pyshell Debug menu)
        self.pyshell.close_debugger()
        # Now close the debugger control window....
        self.top.destroy()

    def make_gui(self):
        pyshell = self.pyshell
        self.flist = pyshell.flist
        self.root = root = pyshell.root
        self.top = top =ListedToplevel(root)
        self.top.wm_title("Debug Control")
        self.top.wm_iconname("Debug")
        top.wm_protocol("WM_DELETE_WINDOW", self.close)
        self.top.bind("<Escape>", self.close)
        #
        self.bframe = bframe = Frame(top)
        self.bframe.pack(anchor="w")
        self.buttons = bl = []
        #
        self.bcont = b = Button(bframe, text="Go", command=self.cont)
        bl.append(b)
        self.bstep = b = Button(bframe, text="Step", command=self.step)
        bl.append(b)
        self.bnext = b = Button(bframe, text="Over", command=self.next)
        bl.append(b)
        self.bret = b = Button(bframe, text="Out", command=self.ret)
        bl.append(b)
        self.bret = b = Button(bframe, text="Quit", command=self.quit)
        bl.append(b)
        #
        for b in bl:
            b.configure(state="disabled")
            b.pack(side="left")
        #
        self.cframe = cframe = Frame(bframe)
        self.cframe.pack(side="left")
        #
        if not self.vstack:
            self.__class__.vstack = BooleanVar(top)
            self.vstack.set(1)
        self.bstack = Checkbutton(cframe,
            text="Stack", command=self.show_stack, variable=self.vstack)
        self.bstack.grid(row=0, column=0)
        if not self.vsource:
            self.__class__.vsource = BooleanVar(top)
        self.bsource = Checkbutton(cframe,
            text="Source", command=self.show_source, variable=self.vsource)
        self.bsource.grid(row=0, column=1)
        if not self.vlocals:
            self.__class__.vlocals = BooleanVar(top)
            self.vlocals.set(1)
        self.blocals = Checkbutton(cframe,
            text="Locals", command=self.show_locals, variable=self.vlocals)
        self.blocals.grid(row=1, column=0)
        if not self.vglobals:
            self.__class__.vglobals = BooleanVar(top)
        self.bglobals = Checkbutton(cframe,
            text="Globals", command=self.show_globals, variable=self.vglobals)
        self.bglobals.grid(row=1, column=1)
        #
        self.status = Label(top, anchor="w")
        self.status.pack(anchor="w")
        self.error = Label(top, anchor="w")
        self.error.pack(anchor="w", fill="x")
        self.errorbg = self.error.cget("background")
        #
        self.fstack = Frame(top, height=1)
        self.fstack.pack(expand=1, fill="both")
        self.flocals = Frame(top)
        self.flocals.pack(expand=1, fill="both")
        self.fglobals = Frame(top, height=1)
        self.fglobals.pack(expand=1, fill="both")
        #
        if self.vstack.get():
            self.show_stack()
        if self.vlocals.get():
            self.show_locals()
        if self.vglobals.get():
            self.show_globals()


    def interaction(self, message, frame, info=None):
        self.frame = frame
        self.status.configure(text=message)
        #
        if info:
            type, value, tb = info
            try:
                m1 = type.__name__
            except AttributeError:
                m1 = "%s" % str(type)
            if value is not None:
                try:
                    m1 = "%s: %s" % (m1, str(value))
                except:
                    pass
            bg = "yellow"
        else:
            m1 = ""
            tb = None
            bg = self.errorbg
        self.error.configure(text=m1, background=bg)
        #
        sv = self.stackviewer
        if sv:
            stack, i = self.idb.get_stack(self.frame, tb)
            sv.load_stack(stack, i)
        #
        self.show_variables(1)
        #
        if self.vsource.get():
            self.sync_source_line()
        #
        for b in self.buttons:
            b.configure(state="normal")
        #
        self.top.tkraise()
        self.root.mainloop()
        #
        for b in self.buttons:
            b.configure(state="disabled")
        self.status.configure(text="")
        self.error.configure(text="", background=self.errorbg)
        self.frame = None

    def sync_source_line(self):
        frame = self.frame
        if not frame:
            return
        filename, lineno = self.__frame2fileline(frame)
        if filename[:1] + filename[-1:] != "<>" and os.path.exists(filename):
            self.flist.gotofileline(filename, lineno)

    def __frame2fileline(self, frame):
        code = frame.f_code
        filename = code.co_filename
        lineno = frame.f_lineno
        return filename, lineno

    def cont(self):
        self.idb.set_continue()
        self.root.quit()

    def step(self):
        self.idb.set_step()
        self.root.quit()

    def next(self):
        self.idb.set_next(self.frame)
        self.root.quit()

    def ret(self):
        self.idb.set_return(self.frame)
        self.root.quit()

    def quit(self):
        self.idb.set_quit()
        self.root.quit()

    stackviewer = None

    def show_stack(self):
        if not self.stackviewer and self.vstack.get():
            self.stackviewer = sv = StackViewer(self.fstack, self.flist, self)
            if self.frame:
                stack, i = self.idb.get_stack(self.frame, None)
                sv.load_stack(stack, i)
        else:
            sv = self.stackviewer
            if sv and not self.vstack.get():
                self.stackviewer = None
                sv.close()
            self.fstack['height'] = 1

    def show_source(self):
        if self.vsource.get():
            self.sync_source_line()

    def show_frame(self, (frame, lineno)):
        self.frame = frame
        self.show_variables()

    localsviewer = None
    globalsviewer = None

    def show_locals(self):
        lv = self.localsviewer
        if self.vlocals.get():
            if not lv:
                self.localsviewer = NamespaceViewer(self.flocals, "Locals")
        else:
            if lv:
                self.localsviewer = None
                lv.close()
                self.flocals['height'] = 1
        self.show_variables()

    def show_globals(self):
        gv = self.globalsviewer
        if self.vglobals.get():
            if not gv:
                self.globalsviewer = NamespaceViewer(self.fglobals, "Globals")
        else:
            if gv:
                self.globalsviewer = None
                gv.close()
                self.fglobals['height'] = 1
        self.show_variables()

    def show_variables(self, force=0):
        lv = self.localsviewer
        gv = self.globalsviewer
        frame = self.frame
        if not frame:
            ldict = gdict = None
        else:
            ldict = frame.f_locals
            gdict = frame.f_globals
            if lv and gv and ldict is gdict:
                ldict = None
        if lv:
            lv.load_dict(ldict, force, self.pyshell.interp.rpcclt)
        if gv:
            gv.load_dict(gdict, force, self.pyshell.interp.rpcclt)

    def set_breakpoint_here(self, filename, lineno):
        self.idb.set_break(filename, lineno)

    def clear_breakpoint_here(self, filename, lineno):
        self.idb.clear_break(filename, lineno)

    def clear_file_breaks(self, filename):
        self.idb.clear_all_file_breaks(filename)

    def load_breakpoints(self):
        "Load PyShellEditorWindow breakpoints into subprocess debugger"
        pyshell_edit_windows = self.pyshell.flist.inversedict.keys()
        for editwin in pyshell_edit_windows:
            filename = editwin.io.filename
            try:
                for lineno in editwin.breakpoints:
                    self.set_breakpoint_here(filename, lineno)
            except AttributeError:
                continue

class StackViewer(ScrolledList):

    def __init__(self, master, flist, gui):
        ScrolledList.__init__(self, master, width=80)
        self.flist = flist
        self.gui = gui
        self.stack = []

    def load_stack(self, stack, index=None):
        self.stack = stack
        self.clear()
        for i in range(len(stack)):
            frame, lineno = stack[i]
            try:
                modname = frame.f_globals["__name__"]
            except:
                modname = "?"
            code = frame.f_code
            filename = code.co_filename
            funcname = code.co_name
            import linecache
            sourceline = linecache.getline(filename, lineno)
            import string
            sourceline = string.strip(sourceline)
            if funcname in ("?", "", None):
                item = "%s, line %d: %s" % (modname, lineno, sourceline)
            else:
                item = "%s.%s(), line %d: %s" % (modname, funcname,
                                                 lineno, sourceline)
            if i == index:
                item = "> " + item
            self.append(item)
        if index is not None:
            self.select(index)

    def popup_event(self, event):
        "override base method"
        if self.stack:
            return ScrolledList.popup_event(self, event)

    def fill_menu(self):
        "override base method"
        menu = self.menu
        menu.add_command(label="Go to source line",
                         command=self.goto_source_line)
        menu.add_command(label="Show stack frame",
                         command=self.show_stack_frame)

    def on_select(self, index):
        "override base method"
        if 0 <= index < len(self.stack):
            self.gui.show_frame(self.stack[index])

    def on_double(self, index):
        "override base method"
        self.show_source(index)

    def goto_source_line(self):
        index = self.listbox.index("active")
        self.show_source(index)

    def show_stack_frame(self):
        index = self.listbox.index("active")
        if 0 <= index < len(self.stack):
            self.gui.show_frame(self.stack[index])

    def show_source(self, index):
        if not (0 <= index < len(self.stack)):
            return
        frame, lineno = self.stack[index]
        code = frame.f_code
        filename = code.co_filename
        if os.path.isfile(filename):
            edit = self.flist.open(filename)
            if edit:
                edit.gotoline(lineno)


class NamespaceViewer:

    def __init__(self, master, title, dict=None):
        width = 0
        height = 40
        if dict:
            height = 20*len(dict) # XXX 20 == observed height of Entry widget
        self.master = master
        self.title = title
        import repr
        self.repr = repr.Repr()
        self.repr.maxstring = 60
        self.repr.maxother = 60
        self.frame = frame = Frame(master)
        self.frame.pack(expand=1, fill="both")
        self.label = Label(frame, text=title, borderwidth=2, relief="groove")
        self.label.pack(fill="x")
        self.vbar = vbar = Scrollbar(frame, name="vbar")
        vbar.pack(side="right", fill="y")
        self.canvas = canvas = Canvas(frame,
                                      height=min(300, max(40, height)),
                                      scrollregion=(0, 0, width, height))
        canvas.pack(side="left", fill="both", expand=1)
        vbar["command"] = canvas.yview
        canvas["yscrollcommand"] = vbar.set
        self.subframe = subframe = Frame(canvas)
        self.sfid = canvas.create_window(0, 0, window=subframe, anchor="nw")
        self.load_dict(dict)

    dict = -1

    def load_dict(self, dict, force=0, rpc_client=None):
        if dict is self.dict and not force:
            return
        subframe = self.subframe
        frame = self.frame
        for c in subframe.children.values():
            c.destroy()
        self.dict = None
        if not dict:
            l = Label(subframe, text="None")
            l.grid(row=0, column=0)
        else:
            names = dict.keys()
            names.sort()
            row = 0
            for name in names:
                value = dict[name]
                svalue = self.repr.repr(value) # repr(value)
                # Strip extra quotes caused by calling repr on the (already)
                # repr'd value sent across the RPC interface:
                if rpc_client:
                    svalue = svalue[1:-1]
                l = Label(subframe, text=name)
                l.grid(row=row, column=0, sticky="nw")
                l = Entry(subframe, width=0, borderwidth=0)
                l.insert(0, svalue)
                l.grid(row=row, column=1, sticky="nw")
                row = row+1
        self.dict = dict
        # XXX Could we use a <Configure> callback for the following?
        subframe.update_idletasks() # Alas!
        width = subframe.winfo_reqwidth()
        height = subframe.winfo_reqheight()
        canvas = self.canvas
        self.canvas["scrollregion"] = (0, 0, width, height)
        if height > 300:
            canvas["height"] = 300
            frame.pack(expand=1)
        else:
            canvas["height"] = height
            frame.pack(expand=0)

    def close(self):
        self.frame.destroy()