python-3.6.zip added from Github

README.cosmo contains the necessary links.

third_party/python/Lib/idlelib/debugger.py

@@ -0,0 +1,550 @@
+import bdb
+import os
+
+from tkinter import *
+from tkinter.ttk import Scrollbar
+
+from idlelib import macosx
+from idlelib.scrolledlist import ScrolledList
+from idlelib.window import ListedToplevel
+
+
+class Idb(bdb.Bdb):
+
+    def __init__(self, gui):
+        self.gui = gui  # An instance of Debugger or proxy of remote.
+        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
+            prev_name = prev_frame.f_code.co_filename
+            if 'idlelib' in prev_name and 'debugger' in prev_name:
+                # catch both idlelib/debugger.py and idlelib/debugger_r.py
+                # on both Posix and Windows
+                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  # If passed, a proxy of remote instance.
+        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"
+        for editwin in self.pyshell.flist.inversedict:
+            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 macosx.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)
+            sourceline = sourceline.strip()
+            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 reprlib
+        self.repr = reprlib.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 list(subframe.children.values()):
+            c.destroy()
+        self.dict = None
+        if not dict:
+            l = Label(subframe, text="None")
+            l.grid(row=0, column=0)
+        else:
+            #names = sorted(dict)
+            ###
+            # Because of (temporary) limitations on the dict_keys type (not yet
+            # public or pickleable), have the subprocess to send a list of
+            # keys, not a dict_keys object.  sorted() will take a dict_keys
+            # (no subprocess) or a list.
+            #
+            # There is also an obscure bug in sorted(dict) where the
+            # interpreter gets into a loop requesting non-existing dict[0],
+            # dict[1], dict[2], etc from the debugger_r.DictProxy.
+            ###
+            keys_list = dict.keys()
+            names = sorted(keys_list)
+            ###
+            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()
+
+if __name__ == "__main__":
+    from unittest import main
+    main('idlelib.idle_test.test_debugger', verbosity=2, exit=False)
+
+# TODO: htest?