nltk.app.rdparser_app.RecursiveDescentApp

type RecursiveDescentApp

object --+ | RecursiveDescentApp

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

[hide private]

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

source code

_init_fonts(self, root)

source code

_init_grammar(self, parent)

source code

_init_bindings(self)

source code

_init_buttons(self, parent)

source code

_configure(self, event)

source code

_init_feedback(self, parent)

source code

_init_canvas(self, parent)

source code

_init_menubar(self, parent)

source code

_get(self, widget, treeloc)

source code

_redraw(self)

source code

_redraw_quick(self)

source code

_highlight_nodes(self)

source code

_highlight_prodlist(self)

source code

_position_text(self)

source code

_tree_leaves(self, tree=None)

source code

destroy(self, *e)

source code

reset(self, *e)

source code

autostep(self, *e)

source code

cancel_autostep(self, *e)

source code

step(self, *e)

source code

match(self, *e)

source code

expand(self, *e)

source code

backtrack(self, *e)

source code

_step(self)

source code

_expand(self, *e)

source code

_match(self, *e)

source code

_backtrack(self, *e)

source code

about(self, *e)

source code

help(self, *e)

source code

postscript(self, *e)

source code

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

source code

resize(self, size=None)

source code

_toggle_grammar(self, *e)

source code

_prodlist_select(self, event)

source code

_animate_expand(self, treeloc)

source code

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

source code

_animate_expand_frame(self, widget, colors)

source code

_animate_backtrack(self, treeloc)

source code

_animate_backtrack_frame(self, widgets, colors)

source code

_animate_match_backtrack(self, treeloc)

source code

_animate_match(self, treeloc)

source code

_animate_match_frame(self, frame, widget, dy)

source code

_animate_match_backtrack_frame(self, frame, widget, dy)

source code

edit_grammar(self, *e)

source code

set_grammar(self, grammar)

source code

edit_sentence(self, *e)

source code

set_sentence(self, sentence)

source code

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

source code

Overrides: object.__init__: (inherited documentation)

mainloop(self, *args, **kwargs)

source code

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.

type RecursiveDescentApp

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

mainloop(self, *args, **kwargs)

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