1 import bdb 2 import os 3 4 from tkinter import * 5 from tkinter.ttk import Scrollbar 6 7 from idlelib import macosx 8 from idlelib.scrolledlist import ScrolledList 9 from idlelib.windows import ListedToplevel 10 11 12 class Idb(bdb.Bdb): 13 14 def __init__(self, gui): 15 self.gui = gui 16 bdb.Bdb.__init__(self) 17 18 def user_line(self, frame): 19 if self.in_rpc_code(frame): 20 self.set_step() 21 return 22 message = self.__frame2message(frame) 23 try: 24 self.gui.interaction(message, frame) 25 except TclError: # When closing debugger window with [x] in 3.x 26 pass 27 28 def user_exception(self, frame, info): 29 if self.in_rpc_code(frame): 30 self.set_step() 31 return 32 message = self.__frame2message(frame) 33 self.gui.interaction(message, frame, info) 34 35 def in_rpc_code(self, frame): 36 if frame.f_code.co_filename.count('rpc.py'): 37 return True 38 else: 39 prev_frame = frame.f_back 40 prev_name = prev_frame.f_code.co_filename 41 if 'idlelib' in prev_name and 'debugger' in prev_name: 42 # catch both idlelib/debugger.py and idlelib/debugger_r.py 43 # on both posix and windows 44 return False 45 return self.in_rpc_code(prev_frame) 46 47 def __frame2message(self, frame): 48 code = frame.f_code 49 filename = code.co_filename 50 lineno = frame.f_lineno 51 basename = os.path.basename(filename) 52 message = "%s:%s" % (basename, lineno) 53 if code.co_name != "?": 54 message = "%s: %s()" % (message, code.co_name) 55 return message 56 57 58 class Debugger: 59 60 vstack = vsource = vlocals = vglobals = None 61 62 def __init__(self, pyshell, idb=None): 63 if idb is None: 64 idb = Idb(self) 65 self.pyshell = pyshell 66 self.idb = idb 67 self.frame = None 68 self.make_gui() 69 self.interacting = 0 70 self.nesting_level = 0 71 72 def run(self, *args): 73 # Deal with the scenario where we've already got a program running 74 # in the debugger and we want to start another. If that is the case, 75 # our second 'run' was invoked from an event dispatched not from 76 # the main event loop, but from the nested event loop in 'interaction' 77 # below. So our stack looks something like this: 78 # outer main event loop 79 # run() 80 # <running program with traces> 81 # callback to debugger's interaction() 82 # nested event loop 83 # run() for second command 84 # 85 # This kind of nesting of event loops causes all kinds of problems 86 # (see e.g. issue #24455) especially when dealing with running as a 87 # subprocess, where there's all kinds of extra stuff happening in 88 # there - insert a traceback.print_stack() to check it out. 89 # 90 # By this point, we've already called restart_subprocess() in 91 # ScriptBinding. However, we also need to unwind the stack back to 92 # that outer event loop. To accomplish this, we: 93 # - return immediately from the nested run() 94 # - abort_loop ensures the nested event loop will terminate 95 # - the debugger's interaction routine completes normally 96 # - the restart_subprocess() will have taken care of stopping 97 # the running program, which will also let the outer run complete 98 # 99 # That leaves us back at the outer main event loop, at which point our 100 # after event can fire, and we'll come back to this routine with a 101 # clean stack. 102 if self.nesting_level > 0: 103 self.abort_loop() 104 self.root.after(100, lambda: self.run(*args)) 105 return 106 try: 107 self.interacting = 1 108 return self.idb.run(*args) 109 finally: 110 self.interacting = 0 111 112 def close(self, event=None): 113 try: 114 self.quit() 115 except Exception: 116 pass 117 if self.interacting: 118 self.top.bell() 119 return 120 if self.stackviewer: 121 self.stackviewer.close(); self.stackviewer = None 122 # Clean up pyshell if user clicked debugger control close widget. 123 # (Causes a harmless extra cycle through close_debugger() if user 124 # toggled debugger from pyshell Debug menu) 125 self.pyshell.close_debugger() 126 # Now close the debugger control window.... 127 self.top.destroy() 128 129 def make_gui(self): 130 pyshell = self.pyshell 131 self.flist = pyshell.flist 132 self.root = root = pyshell.root 133 self.top = top = ListedToplevel(root) 134 self.top.wm_title("Debug Control") 135 self.top.wm_iconname("Debug") 136 top.wm_protocol("WM_DELETE_WINDOW", self.close) 137 self.top.bind("<Escape>", self.close) 138 # 139 self.bframe = bframe = Frame(top) 140 self.bframe.pack(anchor="w") 141 self.buttons = bl = [] 142 # 143 self.bcont = b = Button(bframe, text="Go", command=self.cont) 144 bl.append(b) 145 self.bstep = b = Button(bframe, text="Step", command=self.step) 146 bl.append(b) 147 self.bnext = b = Button(bframe, text="Over", command=self.next) 148 bl.append(b) 149 self.bret = b = Button(bframe, text="Out", command=self.ret) 150 bl.append(b) 151 self.bret = b = Button(bframe, text="Quit", command=self.quit) 152 bl.append(b) 153 # 154 for b in bl: 155 b.configure(state="disabled") 156 b.pack(side="left") 157 # 158 self.cframe = cframe = Frame(bframe) 159 self.cframe.pack(side="left") 160 # 161 if not self.vstack: 162 self.__class__.vstack = BooleanVar(top) 163 self.vstack.set(1) 164 self.bstack = Checkbutton(cframe, 165 text="Stack", command=self.show_stack, variable=self.vstack) 166 self.bstack.grid(row=0, column=0) 167 if not self.vsource: 168 self.__class__.vsource = BooleanVar(top) 169 self.bsource = Checkbutton(cframe, 170 text="Source", command=self.show_source, variable=self.vsource) 171 self.bsource.grid(row=0, column=1) 172 if not self.vlocals: 173 self.__class__.vlocals = BooleanVar(top) 174 self.vlocals.set(1) 175 self.blocals = Checkbutton(cframe, 176 text="Locals", command=self.show_locals, variable=self.vlocals) 177 self.blocals.grid(row=1, column=0) 178 if not self.vglobals: 179 self.__class__.vglobals = BooleanVar(top) 180 self.bglobals = Checkbutton(cframe, 181 text="Globals", command=self.show_globals, variable=self.vglobals) 182 self.bglobals.grid(row=1, column=1) 183 # 184 self.status = Label(top, anchor="w") 185 self.status.pack(anchor="w") 186 self.error = Label(top, anchor="w") 187 self.error.pack(anchor="w", fill="x") 188 self.errorbg = self.error.cget("background") 189 # 190 self.fstack = Frame(top, height=1) 191 self.fstack.pack(expand=1, fill="both") 192 self.flocals = Frame(top) 193 self.flocals.pack(expand=1, fill="both") 194 self.fglobals = Frame(top, height=1) 195 self.fglobals.pack(expand=1, fill="both") 196 # 197 if self.vstack.get(): 198 self.show_stack() 199 if self.vlocals.get(): 200 self.show_locals() 201 if self.vglobals.get(): 202 self.show_globals() 203 204 def interaction(self, message, frame, info=None): 205 self.frame = frame 206 self.status.configure(text=message) 207 # 208 if info: 209 type, value, tb = info 210 try: 211 m1 = type.__name__ 212 except AttributeError: 213 m1 = "%s" % str(type) 214 if value is not None: 215 try: 216 m1 = "%s: %s" % (m1, str(value)) 217 except: 218 pass 219 bg = "yellow" 220 else: 221 m1 = "" 222 tb = None 223 bg = self.errorbg 224 self.error.configure(text=m1, background=bg) 225 # 226 sv = self.stackviewer 227 if sv: 228 stack, i = self.idb.get_stack(self.frame, tb) 229 sv.load_stack(stack, i) 230 # 231 self.show_variables(1) 232 # 233 if self.vsource.get(): 234 self.sync_source_line() 235 # 236 for b in self.buttons: 237 b.configure(state="normal") 238 # 239 self.top.wakeup() 240 # Nested main loop: Tkinter's main loop is not reentrant, so use 241 # Tcl's vwait facility, which reenters the event loop until an 242 # event handler sets the variable we're waiting on 243 self.nesting_level += 1 244 self.root.tk.call('vwait', '::idledebugwait') 245 self.nesting_level -= 1 246 # 247 for b in self.buttons: 248 b.configure(state="disabled") 249 self.status.configure(text="") 250 self.error.configure(text="", background=self.errorbg) 251 self.frame = None 252 253 def sync_source_line(self): 254 frame = self.frame 255 if not frame: 256 return 257 filename, lineno = self.__frame2fileline(frame) 258 if filename[:1] + filename[-1:] != "<>" and os.path.exists(filename): 259 self.flist.gotofileline(filename, lineno) 260 261 def __frame2fileline(self, frame): 262 code = frame.f_code 263 filename = code.co_filename 264 lineno = frame.f_lineno 265 return filename, lineno 266 267 def cont(self): 268 self.idb.set_continue() 269 self.abort_loop() 270 271 def step(self): 272 self.idb.set_step() 273 self.abort_loop() 274 275 def next(self): 276 self.idb.set_next(self.frame) 277 self.abort_loop() 278 279 def ret(self): 280 self.idb.set_return(self.frame) 281 self.abort_loop() 282 283 def quit(self): 284 self.idb.set_quit() 285 self.abort_loop() 286 287 def abort_loop(self): 288 self.root.tk.call('set', '::idledebugwait', '1') 289 290 stackviewer = None 291 292 def show_stack(self): 293 if not self.stackviewer and self.vstack.get(): 294 self.stackviewer = sv = StackViewer(self.fstack, self.flist, self) 295 if self.frame: 296 stack, i = self.idb.get_stack(self.frame, None) 297 sv.load_stack(stack, i) 298 else: 299 sv = self.stackviewer 300 if sv and not self.vstack.get(): 301 self.stackviewer = None 302 sv.close() 303 self.fstack['height'] = 1 304 305 def show_source(self): 306 if self.vsource.get(): 307 self.sync_source_line() 308 309 def show_frame(self, stackitem): 310 self.frame = stackitem[0] # lineno is stackitem[1] 311 self.show_variables() 312 313 localsviewer = None 314 globalsviewer = None 315 316 def show_locals(self): 317 lv = self.localsviewer 318 if self.vlocals.get(): 319 if not lv: 320 self.localsviewer = NamespaceViewer(self.flocals, "Locals") 321 else: 322 if lv: 323 self.localsviewer = None 324 lv.close() 325 self.flocals['height'] = 1 326 self.show_variables() 327 328 def show_globals(self): 329 gv = self.globalsviewer 330 if self.vglobals.get(): 331 if not gv: 332 self.globalsviewer = NamespaceViewer(self.fglobals, "Globals") 333 else: 334 if gv: 335 self.globalsviewer = None 336 gv.close() 337 self.fglobals['height'] = 1 338 self.show_variables() 339 340 def show_variables(self, force=0): 341 lv = self.localsviewer 342 gv = self.globalsviewer 343 frame = self.frame 344 if not frame: 345 ldict = gdict = None 346 else: 347 ldict = frame.f_locals 348 gdict = frame.f_globals 349 if lv and gv and ldict is gdict: 350 ldict = None 351 if lv: 352 lv.load_dict(ldict, force, self.pyshell.interp.rpcclt) 353 if gv: 354 gv.load_dict(gdict, force, self.pyshell.interp.rpcclt) 355 356 def set_breakpoint_here(self, filename, lineno): 357 self.idb.set_break(filename, lineno) 358 359 def clear_breakpoint_here(self, filename, lineno): 360 self.idb.clear_break(filename, lineno) 361 362 def clear_file_breaks(self, filename): 363 self.idb.clear_all_file_breaks(filename) 364 365 def load_breakpoints(self): 366 "Load PyShellEditorWindow breakpoints into subprocess debugger" 367 for editwin in self.pyshell.flist.inversedict: 368 filename = editwin.io.filename 369 try: 370 for lineno in editwin.breakpoints: 371 self.set_breakpoint_here(filename, lineno) 372 except AttributeError: 373 continue 374 375 class StackViewer(ScrolledList): 376 377 def __init__(self, master, flist, gui): 378 if macosx.isAquaTk(): 379 # At least on with the stock AquaTk version on OSX 10.4 you'll 380 # get a shaking GUI that eventually kills IDLE if the width 381 # argument is specified. 382 ScrolledList.__init__(self, master) 383 else: 384 ScrolledList.__init__(self, master, width=80) 385 self.flist = flist 386 self.gui = gui 387 self.stack = [] 388 389 def load_stack(self, stack, index=None): 390 self.stack = stack 391 self.clear() 392 for i in range(len(stack)): 393 frame, lineno = stack[i] 394 try: 395 modname = frame.f_globals["__name__"] 396 except: 397 modname = "?" 398 code = frame.f_code 399 filename = code.co_filename 400 funcname = code.co_name 401 import linecache 402 sourceline = linecache.getline(filename, lineno) 403 sourceline = sourceline.strip() 404 if funcname in ("?", "", None): 405 item = "%s, line %d: %s" % (modname, lineno, sourceline) 406 else: 407 item = "%s.%s(), line %d: %s" % (modname, funcname, 408 lineno, sourceline) 409 if i == index: 410 item = "> " + item 411 self.append(item) 412 if index is not None: 413 self.select(index) 414 415 def popup_event(self, event): 416 "override base method" 417 if self.stack: 418 return ScrolledList.popup_event(self, event) 419 420 def fill_menu(self): 421 "override base method" 422 menu = self.menu 423 menu.add_command(label="Go to source line", 424 command=self.goto_source_line) 425 menu.add_command(label="Show stack frame", 426 command=self.show_stack_frame) 427 428 def on_select(self, index): 429 "override base method" 430 if 0 <= index < len(self.stack): 431 self.gui.show_frame(self.stack[index]) 432 433 def on_double(self, index): 434 "override base method" 435 self.show_source(index) 436 437 def goto_source_line(self): 438 index = self.listbox.index("active") 439 self.show_source(index) 440 441 def show_stack_frame(self): 442 index = self.listbox.index("active") 443 if 0 <= index < len(self.stack): 444 self.gui.show_frame(self.stack[index]) 445 446 def show_source(self, index): 447 if not (0 <= index < len(self.stack)): 448 return 449 frame, lineno = self.stack[index] 450 code = frame.f_code 451 filename = code.co_filename 452 if os.path.isfile(filename): 453 edit = self.flist.open(filename) 454 if edit: 455 edit.gotoline(lineno) 456 457 458 class NamespaceViewer: 459 460 def __init__(self, master, title, dict=None): 461 width = 0 462 height = 40 463 if dict: 464 height = 20*len(dict) # XXX 20 == observed height of Entry widget 465 self.master = master 466 self.title = title 467 import reprlib 468 self.repr = reprlib.Repr() 469 self.repr.maxstring = 60 470 self.repr.maxother = 60 471 self.frame = frame = Frame(master) 472 self.frame.pack(expand=1, fill="both") 473 self.label = Label(frame, text=title, borderwidth=2, relief="groove") 474 self.label.pack(fill="x") 475 self.vbar = vbar = Scrollbar(frame, name="vbar") 476 vbar.pack(side="right", fill="y") 477 self.canvas = canvas = Canvas(frame, 478 height=min(300, max(40, height)), 479 scrollregion=(0, 0, width, height)) 480 canvas.pack(side="left", fill="both", expand=1) 481 vbar["command"] = canvas.yview 482 canvas["yscrollcommand"] = vbar.set 483 self.subframe = subframe = Frame(canvas) 484 self.sfid = canvas.create_window(0, 0, window=subframe, anchor="nw") 485 self.load_dict(dict) 486 487 dict = -1 488 489 def load_dict(self, dict, force=0, rpc_client=None): 490 if dict is self.dict and not force: 491 return 492 subframe = self.subframe 493 frame = self.frame 494 for c in list(subframe.children.values()): 495 c.destroy() 496 self.dict = None 497 if not dict: 498 l = Label(subframe, text="None") 499 l.grid(row=0, column=0) 500 else: 501 #names = sorted(dict) 502 ### 503 # Because of (temporary) limitations on the dict_keys type (not yet 504 # public or pickleable), have the subprocess to send a list of 505 # keys, not a dict_keys object. sorted() will take a dict_keys 506 # (no subprocess) or a list. 507 # 508 # There is also an obscure bug in sorted(dict) where the 509 # interpreter gets into a loop requesting non-existing dict[0], 510 # dict[1], dict[2], etc from the debugger_r.DictProxy. 511 ### 512 keys_list = dict.keys() 513 names = sorted(keys_list) 514 ### 515 row = 0 516 for name in names: 517 value = dict[name] 518 svalue = self.repr.repr(value) # repr(value) 519 # Strip extra quotes caused by calling repr on the (already) 520 # repr'd value sent across the RPC interface: 521 if rpc_client: 522 svalue = svalue[1:-1] 523 l = Label(subframe, text=name) 524 l.grid(row=row, column=0, sticky="nw") 525 l = Entry(subframe, width=0, borderwidth=0) 526 l.insert(0, svalue) 527 l.grid(row=row, column=1, sticky="nw") 528 row = row+1 529 self.dict = dict 530 # XXX Could we use a <Configure> callback for the following? 531 subframe.update_idletasks() # Alas! 532 width = subframe.winfo_reqwidth() 533 height = subframe.winfo_reqheight() 534 canvas = self.canvas 535 self.canvas["scrollregion"] = (0, 0, width, height) 536 if height > 300: 537 canvas["height"] = 300 538 frame.pack(expand=1) 539 else: 540 canvas["height"] = height 541 frame.pack(expand=0) 542 543 def close(self): 544 self.frame.destroy() 545
