nltk.draw.rdparser.RecursiveDescentDemo

Class RecursiveDescentDemo

object --+ | RecursiveDescentDemo

A graphical tool for exploring the recursive descent parser. The tool displays the parser's tree and the remaining text, and allows the user to control the parser's operation. In particular, the user can expand subtrees on the frontier, match tokens on the frontier against the text, and backtrack. A "step" button simply steps through the parsing process, performing the operations that RecursiveDescentParser 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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_configure(self, event)

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_init_feedback(self, parent)

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_init_canvas(self, parent)

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_init_menubar(self, parent)

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_get(self, widget, treeloc)

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_redraw(self)

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_redraw_quick(self)

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_highlight_nodes(self)

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_highlight_prodlist(self)

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_position_text(self)

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_tree_leaves(self, tree=None)

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destroy(self, *e)

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reset(self, *e)

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autostep(self, *e)

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cancel_autostep(self, *e)

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step(self, *e)

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match(self, *e)

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expand(self, *e)

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backtrack(self, *e)

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_step(self)

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_expand(self, *e)

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_match(self, *e)

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_backtrack(self, *e)

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about(self, *e)

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help(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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_toggle_grammar(self, *e)

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_prodlist_select(self, event)

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_animate_expand(self, treeloc)

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_makeroom(self, treeseg)
Make sure that no sibling tree bbox's overlap.

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_animate_expand_frame(self, widget, colors)

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_animate_backtrack(self, treeloc)

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_animate_backtrack_frame(self, widgets, colors)

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_animate_match_backtrack(self, treeloc)

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_animate_match(self, treeloc)

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_animate_match_frame(self, frame, widget, dy)

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_animate_match_backtrack_frame(self, frame, widget, dy)

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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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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 RecursiveDescentDemo

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

mainloop(self, *args, **kwargs)

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