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✏️ Debugger.py
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import os import bdb from Tkinter import * from idlelib.WindowList import ListedToplevel from idlelib.ScrolledList import ScrolledList from idlelib import macosxSupport class Idb(bdb.Bdb): def __init__(self, gui): self.gui = gui bdb.Bdb.__init__(self) def user_line(self, frame): if self.in_rpc_code(frame): self.set_step() return message = self.__frame2message(frame) try: self.gui.interaction(message, frame) except TclError: # When closing debugger window with [x] in 3.x pass def user_exception(self, frame, info): if self.in_rpc_code(frame): self.set_step() return message = self.__frame2message(frame) self.gui.interaction(message, frame, info) def in_rpc_code(self, frame): if frame.f_code.co_filename.count('rpc.py'): return True else: prev_frame = frame.f_back if prev_frame.f_code.co_filename.count('Debugger.py'): # (that test will catch both Debugger.py and RemoteDebugger.py) return False return self.in_rpc_code(prev_frame) 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 self.nesting_level = 0 def run(self, *args): # Deal with the scenario where we've already got a program running # in the debugger and we want to start another. If that is the case, # our second 'run' was invoked from an event dispatched not from # the main event loop, but from the nested event loop in 'interaction' # below. So our stack looks something like this: # outer main event loop # run() # <running program with traces> # callback to debugger's interaction() # nested event loop # run() for second command # # This kind of nesting of event loops causes all kinds of problems # (see e.g. issue #24455) especially when dealing with running as a # subprocess, where there's all kinds of extra stuff happening in # there - insert a traceback.print_stack() to check it out. # # By this point, we've already called restart_subprocess() in # ScriptBinding. However, we also need to unwind the stack back to # that outer event loop. To accomplish this, we: # - return immediately from the nested run() # - abort_loop ensures the nested event loop will terminate # - the debugger's interaction routine completes normally # - the restart_subprocess() will have taken care of stopping # the running program, which will also let the outer run complete # # That leaves us back at the outer main event loop, at which point our # after event can fire, and we'll come back to this routine with a # clean stack. if self.nesting_level > 0: self.abort_loop() self.root.after(100, lambda: self.run(*args)) return try: self.interacting = 1 return self.idb.run(*args) finally: self.interacting = 0 def close(self, event=None): try: self.quit() except Exception: pass 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.wakeup() # Nested main loop: Tkinter's main loop is not reentrant, so use # Tcl's vwait facility, which reenters the event loop until an # event handler sets the variable we're waiting on self.nesting_level += 1 self.root.tk.call('vwait', '::idledebugwait') self.nesting_level -= 1 # 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.abort_loop() def step(self): self.idb.set_step() self.abort_loop() def next(self): self.idb.set_next(self.frame) self.abort_loop() def ret(self): self.idb.set_return(self.frame) self.abort_loop() def quit(self): self.idb.set_quit() self.abort_loop() def abort_loop(self): self.root.tk.call('set', '::idledebugwait', '1') 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, stackitem): self.frame = stackitem[0] # lineno is stackitem[1] 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): if macosxSupport.isAquaTk(): # At least on with the stock AquaTk version on OSX 10.4 you'll # get a shaking GUI that eventually kills IDLE if the width # argument is specified. ScrolledList.__init__(self, master) else: 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()
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