nltk.draw.srparser.ShiftReduceDemo

Class ShiftReduceDemo

object --+ | ShiftReduceDemo

A graphical tool for exploring the shift/reduce parser. The tool displays the parser's stack and the remaining text, and allows the user to control the parser's operation. In particular, the user can shift tokens onto the stack, and can perform reductions on the top elements of the stack. A "step" button simply steps through the parsing process, performing the operations that parse.ShiftReduceParser would use.

Instance Methods

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__init__(self, grammar, sent, trace=0)
x.__init__(...) initializes x; see x.__class__.__doc__ for signature

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_init_fonts(self, root)

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_init_grammar(self, parent)

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_init_bindings(self)

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_init_buttons(self, parent)

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_init_menubar(self, parent)

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_init_feedback(self, parent)

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_init_canvas(self, parent)

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_redraw(self)

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_draw_stack_top(self, widget)

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_highlight_productions(self)

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destroy(self, *e)

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reset(self, *e)

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step(self, *e)

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shift(self, *e)

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reduce(self, *e)

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undo(self, *e)

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postscript(self, *e)

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mainloop(self, *args, **kwargs)
Enter the Tkinter mainloop.

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resize(self, size=None)

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help(self, *e)

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about(self, *e)

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edit_grammar(self, *e)

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set_grammar(self, grammar)

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edit_sentence(self, *e)

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set_sentence(self, sentence)

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_toggle_grammar(self, *e)

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_prodlist_select(self, event)

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_popup_reduce(self, widget)

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_animate_shift(self)

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_animate_shift_frame(self, frame, widget, dx)

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_animate_reduce(self)

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_animate_reduce_frame(self, frame, widgets, dy)

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_highlight_hover(self, event)

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_clear_hover(self, *event)

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Inherited from object: __delattr__, __getattribute__, __hash__, __new__, __reduce__, __reduce_ex__, __repr__, __setattr__, __str__

Properties

[hide private]

Inherited from object: __class__

init(self, grammar, sent, trace=0)
(Constructor)

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x.__init__(...) initializes x; see x.__class__.__doc__ for signature

Overrides: object.__init__: (inherited documentation)

mainloop(self, *args, **kwargs)

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Enter the Tkinter mainloop. This function must be called if this demo is created from a non-interactive program (e.g. from a secript); otherwise, the demo will close as soon as the script completes.

Class ShiftReduceDemo

__init__(self, grammar, sent, trace=0) (Constructor)

mainloop(self, *args, **kwargs)

init(self, grammar, sent, trace=0)
(Constructor)