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<H1>Re: [MUD-Dev] string parsing</H1>
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<LI><em>To</em>: <A HREF="mailto:mud-dev#null,net">mud-dev#null,net</A></LI>
<LI><em>Subject</em>: Re: [MUD-Dev] string parsing</LI>
<LI><em>From</em>: "Felix A. Croes" <<A HREF="mailto:felix#xs1,simplex.nl">felix#xs1,simplex.nl</A>></LI>
<LI><em>Date</em>: Mon, 3 Nov 1997 14:25:22 +0100 (MET)</LI>
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<PRE>
cg#ami-cg,GraySage.Edmonton.AB.CA (Chris Gray) wrote:
> [Felix C:]
>
> : object find_obj_in_obj(mixed *parsetree)
> : {
> : /*
> : * parsetree = ({ obj1name, preposition, obj2name })
> : *
> : * find obj1 in obj2 (the code below has been simplified)
> : */
> : return present(parsetree[0], present(parsetree[2]));
> : }
> :
> :Not actually very hackish, is it? Finding an object in another object
> :is a fairly common operation.
>
> Well, are you going to have find_obj_on_obj, find_obj_beside_obj,
> find_obj_under_obj, etc.?
If the mud has such object relations as `next to', `on top of' etc,
then it makes sense to have syntax rules, and functions to give them
meaning, for all of them.
> Wouldn't you also want 'present' to be able
> to properly parse a noun phrase? That's where I was thinking you might
> end up recursively calling parse_string. Nothing really bad here, I
> guess - there probably aren't any truly tidy alternatives that work better.
I made nouns single words to keep the example simple, but that can be
changed (replacing Noun with NounPhrase):
NounPhrase: ( OptArticle ) ( Adjectives ) word
OptArticle: 'the'
OptArticle: 'a'
OptArticle: 'an'
OptArticle:
Adjectives: word Adjectives
Adjectives:
In this case, the parse tree in the above function would be
({
({ optart }), ({ adjectives }), word,
preposition,
({ optart }), ({ adjectives }), word
})
All the parsing for present() would already be done, and there is no
need for recursively calling the parser.
Felix Croes
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<ul><li>Thread context:
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<LI><STRONG>Re: [MUD-Dev] string parsing</STRONG>, <EM>(continued)</EM>
<ul compact>
<LI><strong><A NAME="00192" HREF="msg00192.html">Re: [MUD-Dev] string parsing</A></strong>,
Felix A. Croes <a href="mailto:felix#xs1,simplex.nl">felix#xs1,simplex.nl</a>, Fri 31 Oct 1997, 12:12 GMT
</LI>
<LI><strong><A NAME="00193" HREF="msg00193.html">Re: [MUD-Dev] string parsing</A></strong>,
Felix A. Croes <a href="mailto:felix#xs1,simplex.nl">felix#xs1,simplex.nl</a>, Fri 31 Oct 1997, 20:06 GMT
</LI>
<LI><strong><A NAME="00197" HREF="msg00197.html">Re: [MUD-Dev] string parsing</A></strong>,
Chris Gray <a href="mailto:cg#ami-cg,GraySage.Edmonton.AB.CA">cg#ami-cg,GraySage.Edmonton.AB.CA</a>, Sat 01 Nov 1997, 18:17 GMT
</LI>
<LI><strong><A NAME="00198" HREF="msg00198.html">Re: [MUD-Dev] string parsing</A></strong>,
Chris Gray <a href="mailto:cg#ami-cg,GraySage.Edmonton.AB.CA">cg#ami-cg,GraySage.Edmonton.AB.CA</a>, Sat 01 Nov 1997, 20:17 GMT
</LI>
<LI><strong><A NAME="00228" HREF="msg00228.html">Re: [MUD-Dev] string parsing</A></strong>,
Felix A. Croes <a href="mailto:felix#xs1,simplex.nl">felix#xs1,simplex.nl</a>, Mon 03 Nov 1997, 13:25 GMT
<UL>
<LI><strong><A NAME="00231" HREF="msg00231.html">Re: [MUD-Dev] string parsing</A></strong>,
coder <a href="mailto:coder#ibm,net">coder#ibm,net</a>, Tue 04 Nov 1997, 04:30 GMT
</LI>
</UL>
</LI>
<LI><strong><A NAME="00233" HREF="msg00233.html">Re: [MUD-Dev] string parsing</A></strong>,
Chris Gray <a href="mailto:cg#ami-cg,GraySage.Edmonton.AB.CA">cg#ami-cg,GraySage.Edmonton.AB.CA</a>, Tue 04 Nov 1997, 07:03 GMT
</LI>
<LI><strong><A NAME="00235" HREF="msg00235.html">Re: [MUD-Dev] string parsing</A></strong>,
Felix A. Croes <a href="mailto:felix#xs1,simplex.nl">felix#xs1,simplex.nl</a>, Tue 04 Nov 1997, 12:25 GMT
<UL>
<LI><strong><A NAME="00254" HREF="msg00254.html">Re: [MUD-Dev] string parsing</A></strong>,
coder <a href="mailto:coder#ibm,net">coder#ibm,net</a>, Sun 09 Nov 1997, 05:39 GMT
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