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yap-6.3/packages/python/yap_kernel/yap_ipython/terminal/debugger.py

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import signal
import sys
from yap_ipython.core.debugger import Pdb
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from yap_ipython.core.completer import IPCompleter
from .ptutils import IPythonPTCompleter
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from .shortcuts import suspend_to_bg, cursor_in_leading_ws
from prompt_toolkit.enums import DEFAULT_BUFFER
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from prompt_toolkit.filters import (Condition, HasFocus, HasSelection,
ViInsertMode, EmacsInsertMode)
from prompt_toolkit.keys import Keys
from prompt_toolkit.key_binding.manager import KeyBindingManager
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from prompt_toolkit.key_binding.bindings.completion import display_completions_like_readline
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from prompt_toolkit.shortcuts.prompt import PromptSession
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from prompt_toolkit.enums import EditingMode
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from prompt_toolkit.formatted_text import PygmentsTokens
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class TerminalPdb(Pdb):
def __init__(self, *args, **kwargs):
Pdb.__init__(self, *args, **kwargs)
self._ptcomp = None
self.pt_init()
def pt_init(self):
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def get_prompt_tokens():
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return [(Token.Prompt, self.prompt)]
if self._ptcomp is None:
compl = IPCompleter(shell=self.shell,
namespace={},
global_namespace={},
parent=self.shell,
)
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self._ptcomp = IPythonPTCompleter(compl)
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kb = KeyBindings()
supports_suspend = Condition(lambda: hasattr(signal, 'SIGTSTP'))
kb.add('c-z', filter=supports_suspend)(suspend_to_bg)
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if self.shell.display_completions == 'readlinelike':
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kb.add('tab', filter=(has_focus(DEFAULT_BUFFER)
& ~has_selection
& vi_insert_mode | emacs_insert_mode
& ~cursor_in_leading_ws
))(display_completions_like_readline)
self.pt_app = PromptSession(
message=(lambda: PygmentsTokens(get_prompt_tokens())),
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editing_mode=getattr(EditingMode, self.shell.editing_mode.upper()),
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key_bindings=kb,
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history=self.shell.debugger_history,
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completer=self._ptcomp,
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enable_history_search=True,
mouse_support=self.shell.mouse_support,
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complete_style=self.shell.pt_complete_style,
style=self.shell.style,
inputhook=self.shell.inputhook,
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)
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:
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line = self.pt_app.prompt() # reset_current_buffer=True)
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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)
if __name__ == '__main__':
import pdb
# yap_ipython.core.debugger.Pdb.trace_dispatch shall not catch
# bdb.BdbQuit. When started through __main__ and an exception
# happened after hitting "c", this is needed in order to
# be able to quit the debugging session (see #9950).
old_trace_dispatch = pdb.Pdb.trace_dispatch
pdb.Pdb = TerminalPdb
pdb.Pdb.trace_dispatch = old_trace_dispatch
pdb.main()