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yap-6.3/Logtalk/examples/dcgs/SCRIPT
pmoura f5e660b9a3 Logtalk 2.20.0 files.
git-svn-id: https://yap.svn.sf.net/svnroot/yap/trunk@1114 b08c6af1-5177-4d33-ba66-4b1c6b8b522a
2004-08-16 16:41:11 +00:00

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=================================================================
Logtalk - Object oriented extension to Prolog
Release 2.20.0
Copyright (c) 1998-2004 Paulo Moura. All Rights Reserved.
=================================================================
% start by loading the example:
| ?- logtalk_load(loader).
...
% DCG rules implementing a simple calculator:
| ?- calculator::parse("1+2-3*4", Result).
Result = -9
yes
% recognizing gramatically correct sentences:
| ?- sentence::parse([the, girl, likes, the, boy], Result).
Result = true
yes
| ?- sentence::parse([the, girl, scares, the, boy], Result).
Result = false
yes
% generating parse trees for sentences:
| ?- parsetree::parse([the, girl, likes, the, boy], Tree).
Tree = Tree = s(np(d(the), n(girl)), vp(v(likes), np(d(the), n(boy))))
yes
% bill of materials example:
| ?- bom::parts(bike, L).
L = [frame, crank, pedal, pedal, chain, spokes, rim, hub, spokes, rim, hub]
yes
| ?- bom::parts(wheel, L).
L = [spokes, rim, hub]
yes
% parsing command-line shell input:
| ?- shell::parse("pwd; cd ..; ls -a", L).
L = [pwd,'cd ..','ls -a'] ?
yes
% walker movements:
| ?- walker::walk([n(5), e(4), s(2), nw(8), s(5), se(1), n(4)], Ending).
Ending = -0.94974746830583223,6.9497474683058318 ?
yes
% conversion between compound terms and XML:
| ?- xml::convert(word(child, children), word(singular, plural), XML).
XML = '<word><singular>child</singular><plural>children</plural></word>'
yes
| ?- xml::convert(Term, Interpretation, '<word><singular>child</singular><plural>children</plural></word>').
Term = word(child, children)
Interpretation = word(singular, plural)
yes
% parsing URLs:
| ?- url::parse("http://www.logtalk.org", Components).
Components = [protocol(http), address([www, logtalk, org]), path([]), file('')]
yes
| ?- url::parse("http://www.logtalk.org/", Components).
Components = [protocol(http), address([www, logtalk, org]), path(['']), file('')]
yes
| ?- url::parse("http://www.logtalk.org/cvs", Components).
Components = [protocol(http), address([www, logtalk, org]), path([cvs]), file('')]
yes
| ?- url::parse("http://www.logtalk.org/cvs.html", Components).
Components = [protocol(http), address([www, logtalk, org]), path([]), file('cvs.html')]
yes
| ?- url::parse("http://193.136.64.5/files/update", Components).
Components = [protocol(http), address([193, 136, 64, 5]), path([files, update]), file('')]
yes
% command language example:
?- faa::main.
Fly Amzi! Air
enter command> list flights
aa101
aa102
aa103
enter command> book elana aa102
enter command> book tom aa102
enter command> list passengers aa102
elana
tom
enter command> exit
yes