import signal import sys from IPython.core.debugger import Pdb from IPython.core.completer import IPCompleter from .ptutils import IPythonPTCompleter from .shortcuts import suspend_to_bg, cursor_in_leading_ws from prompt_toolkit.enums import DEFAULT_BUFFER from prompt_toolkit.filters import (Condition, HasFocus, HasSelection, ViInsertMode, EmacsInsertMode) from prompt_toolkit.keys import Keys from prompt_toolkit.key_binding.manager import KeyBindingManager from prompt_toolkit.key_binding.bindings.completion import display_completions_like_readline from prompt_toolkit.token import Token from prompt_toolkit.shortcuts import create_prompt_application from prompt_toolkit.interface import CommandLineInterface from prompt_toolkit.enums import EditingMode class TerminalPdb(Pdb): def __init__(self, *args, **kwargs): Pdb.__init__(self, *args, **kwargs) self._ptcomp = None self.pt_init() def pt_init(self): def get_prompt_tokens(cli): return [(Token.Prompt, self.prompt)] def patch_stdout(**kwargs): return self.pt_cli.patch_stdout_context(**kwargs) if self._ptcomp is None: compl = IPCompleter(shell=self.shell, namespace={}, global_namespace={}, use_readline=False, parent=self.shell, ) self._ptcomp = IPythonPTCompleter(compl, patch_stdout=patch_stdout) kbmanager = KeyBindingManager.for_prompt() supports_suspend = Condition(lambda cli: hasattr(signal, 'SIGTSTP')) kbmanager.registry.add_binding(Keys.ControlZ, filter=supports_suspend )(suspend_to_bg) if self.shell.display_completions == 'readlinelike': kbmanager.registry.add_binding(Keys.ControlI, filter=(HasFocus(DEFAULT_BUFFER) & ~HasSelection() & ViInsertMode() | EmacsInsertMode() & ~cursor_in_leading_ws ))(display_completions_like_readline) multicolumn = (self.shell.display_completions == 'multicolumn') self._pt_app = create_prompt_application( editing_mode=getattr(EditingMode, self.shell.editing_mode.upper()), key_bindings_registry=kbmanager.registry, history=self.shell.debugger_history, completer= self._ptcomp, enable_history_search=True, mouse_support=self.shell.mouse_support, get_prompt_tokens=get_prompt_tokens, display_completions_in_columns=multicolumn, style=self.shell.style ) self.pt_cli = CommandLineInterface(self._pt_app, eventloop=self.shell._eventloop) def cmdloop(self, intro=None): """Repeatedly issue a prompt, accept input, parse an initial prefix off the received input, and dispatch to action methods, passing them the remainder of the line as argument. override the same methods from cmd.Cmd to provide prompt toolkit replacement. """ if not self.use_rawinput: raise ValueError('Sorry ipdb does not support use_rawinput=False') self.preloop() try: if intro is not None: self.intro = intro if self.intro: self.stdout.write(str(self.intro)+"\n") stop = None while not stop: if self.cmdqueue: line = self.cmdqueue.pop(0) else: self._ptcomp.ipy_completer.namespace = self.curframe_locals self._ptcomp.ipy_completer.global_namespace = self.curframe.f_globals try: line = self.pt_cli.run(reset_current_buffer=True).text except EOFError: line = 'EOF' line = self.precmd(line) stop = self.onecmd(line) stop = self.postcmd(stop, line) self.postloop() except Exception: raise def set_trace(frame=None): """ Start debugging from `frame`. If frame is not specified, debugging starts from caller's frame. """ TerminalPdb().set_trace(frame or sys._getframe().f_back)