October 1997
- Carnage, scripting newbie guides Koster, Raph
- Carnage, scripting newbie guides Nathan Yospe
- Carnage, scripting newbie guides Chris Gray
- Carnage, scripting newbie guides ##Make Nylander
- Carnage, scripting newbie guides ##Make Nylander
- Usability and interface and who the hell is supposed to clawrenc@cup.hp.com
- 101 Spells Not Worth Memorizing clawrenc@cup.hp.com
- more classes (Usability and interface and who the Brian Price
- more classes (Usability and interface and who the Matt Chatterley
- more classes (Usability and interface and who the coder@ibm.net
- Stranger in a Strange Land (was Usability and interface and Maddy
- Tablets. Ola Fosheim Grøstad
- Stranger in a Strange Land (was Usability and interface clawrenc@cup.hp.com
- Usability and interface ... Marian Griffith
- Usability and interface ... Caliban Tiresias Darklock
- Usability and interface ... Broly
- Usability and interface ... Caliban Tiresias Darklock
- Usability and interface ... Derrick Jones
- Usability and interface ... coder@ibm.net
- Usability and interface ... Derrick Jones
- Usability and interface ... coder@ibm.net
- Usability and interface ... coder@ibm.net
- Usability and interface ... Marian Griffith
- Turn-based Combat Jon A. Lambert
- Turn-based Combat Travis Casey
- Turn-based Combat John G.
- OT: I'm moving! coder@ibm.net
- (fwd) New mud release coder@ibm.net
- Riddles for games clawrenc@cup.hp.com
- Riddles for games Chris Gray
- Riddles for games coder@ibm.net
- The Trap Collection clawrenc@cup.hp.com
- Learning through failure Jon A. Lambert
- Learning through failure Maddy
- The Trap Collection - Volume II clawrenc@cup.hp.com
- THE COMPLETE GUIDE TO UNLAWFUL CARNAL KNOWLEDGE FOR FANTASY ROLE-PLAYING GAMES clawrenc@cup.hp.com
- (fwd) New MUD software wanted? coder@ibm.net
- (fwd) New MUD software wanted? Felix A. Croes
- (fwd) New MUD software wanted? coder@ibm.net
- META: File attachments as list postings. coder@ibm.net
- More Riddles... Jon A. Lambert
- More Riddles... Jon A. Lambert
- multiple intelligences Brandon J. Rickman
- multiple intelligences Travis Casey
- multiple intelligences Brandon J. Rickman
- multiple intelligences S001GMU@nova.wright.edu
- multiple intelligences Travis S. Casey
- multiple intelligences coder@ibm.net
- OT: Usability and interface and who the hell is suppo coder@ibm.net
- Fear of magic (was:Usability and interface) Derrick Jones
- Fear of magic (was:Usability and interface) Michael Hohensee
- Fear of magic (was:Usability and interface) coder@ibm.net
- The Official T$R Book of Adventure Suggestions coder@ibm.net
- Mud governance Koster, Raph
- Mud governance Felix A. Croes
- Mud governance Mike Sellers
- Mud governance Travis Casey
- Mud governance coder@ibm.net
- Mud governance Mike Sellers
- Mud governance coder@ibm.net
- Mud governance S001GMU@nova.wright.edu
- Mud governance coder@ibm.net
- Mud governance Koster, Raph
- Mud governance coder@ibm.net
- OT: Usability and interface and who the hell is su Jon A. Lambert
- Fear of magic (was:Usability and interface) Marian Griffith
- Fear of magic (was:Usability and interface) Derrick Jones
- Fear of magic (was:Usability and interface) coder@ibm.net
- Fear of magic (was:Usability and interface) Nathan Yospe
- Fear of magic (was:Usability and interface) Marian Griffith
- Fear of magic (was:Usability and interface) Sauron
- Fear of magic (was:Usability and interface) coder@ibm.net
- Fear of magic (was:Usability and interface) Marian Griffith
- Fear of magic (was:Usability and interface) coder@ibm.net
- Fear of magic (was:Usability and interface) Brandon J. Rickman
- Fear of magic (was:Usability and interface) Derrick Jones
- Fear of magic (was:Usability and interface) Jon A. Lambert
- Fear of magic (was:Usability and interface) Adam Wiggins
- Fear of magic (was:Usability and interface) Derrick Jones
- Fear of magic (was:Usability and interface) Derrick Jones
- Fear of magic (was:Usability and interface) Derrick Jones
- Fear of magic (was:Usability and interface) coder@ibm.net
- Fear of magic (was:Usability and interface) coder@ibm.net
- Fear of magic (was:Usability and interface) Sauron
- Fear of magic (was:Usability and interface) Marian Griffith
- Fear of magic (was:Usability and interface) Marian Griffith
- Fear of magic (was:Usability and interface) Jon A. Lambert
- Fear of magic (was:Usability and interface) coder@ibm.net
- Fear of magic (was:Usability and interface) Vadim Tkachenko
- Fear of magic (was:Usability and interface) Sauron
- Fear of magic (was:Usability and interface) Stephen Zepp
- Fear of magic (was:Usability and interface) Matt Chatterley
- Fear of magic (was:Usability and interface) Vadim Tkachenko
- Fear of magic (was:Usability and interface) Stephen Zepp
- Fear of magic (was:Usability and interface) coder@ibm.net
- Fear of magic (was:Usability and interface) Matt Chatterley
- Fear of magic (was:Usability and interface) coder@ibm.net
- Fear of magic (was:Usability and interface) Alex Oren
- Fear of magic (was:Usability and interface) Alex Oren
- Fear of magic (was:Usability and interface) Koster, Raph
- Fear of magic (was:Usability and interface) Chris Gray
- Fear of magic (was:Usability and interface) Richard Woolcock
- Fear of magic (was:Usability and interface) Stephen Zepp
- META: List burp coder@ibm.net
- To catch a mage (was fear of magic) Derrick Jones
- To catch a mage (was fear of magic) Matt Chatterley
- To catch a mage (was fear of magic) coder@ibm.net
- To catch a mage (was fear of magic) coder@ibm.net
- To catch a mage (was fear of magic) Derrick Jones
- To catch a mage (was fear of magic) coder@ibm.net
- To catch a mage (was fear of magic) Derrick Jones
- To catch a mage (was fear of magic) coder@ibm.net
- CODE RELEASE: [mush mux] Portable Space Engine v0.8.3 RELEASED! coder@ibm.net
- ANNOUNCEMENT: [graphical commercial] Mystic Realms coder@ibm.net
- CODE RELEASE: [server] New Mud Software (SunderMUD 1.0) coder@ibm.net
- string parsing Felix A. Croes
- string parsing Chris Gray
- string parsing Felix A. Croes
cg@ami-cg.GraySage.Edmonton.AB.CA (Chris Gray) wrote:
> [Felix C:]
>
> :What follows is a description of something I am currently implementing
> :for my server. I am providing it here for others to comment on. Also,
> :I'd like to hear of other approaches to the same problem.
>
> In general, I think such a facility is a very good idea. That's why I have
> one in my system! I've found it to be useful in a couple of places, such
> as "sublanguages" for my online building commands, etc.
>
> One of my main concerns, however, is efficiency. LPC isn't as fast as
> native code for string handling, so anything you do on a per-character
> basis is going to be expensive. In my system, I did a number of builtin
> (native) functions to perform most of the core of the work. You can
> probably do that too.
I am writing the entire function as a server builtin, using lazy DFA
construction, lazy DPDA construction, with the appropriate amount of
caching between calls, etc.
>[...]
> Some other issues I've bumped into relating to this kind of parsing:
>[...]
> - the resolution of a noun-phrase string to a MUD-world object can be
> context dependent on the verb in the command. E.g. 'pick up the rock'
> can resolve to a different rock than 'take the rock from the sack'.
> I handle this by not doing the resolution until I am inside the code
> for the specific verb. Perhaps you could pass the verb to your
> 'find_obj' and 'find_liv' routines, but that doesn't result in very
> modular verbs.
In this case, `find_obj' should not just deal with "the rock", but with
"the rock from the sack" as a single object. I.e. it's a matter of
adjusting the grammar.
> My current system is less like your proposal than an earlier one I did.
> I don't quite remember why I changed! I do recall, however, that I ended
> up with a *lot* of rules in the grammar, to handle the various ways that
> the player could give a command. I didn't do the lexical stuff, just the
> syntactic level. The lexical stuff was hard-coded.
Even if you don't remember <why> you changed, do you remember <what> you
changed? :)
> In your last "give sword to dwarf" example, what would parse_string return
> if find_obj couldn't find a sword? An array containing the words of the
> noun-phrase, so that higher-level code could properly complain about not
> being able to find a sword?
My example does not really deal with this possibility at all. It could
be extended in several ways:
- the function could return such an array, if the object was not found.
- the function could return 0 indicating that this parsing is invalid;
this could be combined with an additional grammar rule that functions
as a catch-all for errors in the input.
- assuming that the grammar is unambiguous, the function could deliver
feedback to the user at parsing time.
Felix Croes - string parsing Jon A. Lambert
- string parsing Felix A. Croes
- string parsing Chris Gray
- string parsing Felix A. Croes
- string parsing Chris Gray
- string parsing Felix A. Croes
- string parsing Chris Gray
- string parsing coder@ibm.net
- string parsing Felix A. Croes
- string parsing coder@ibm.net
- string parsing Chris Gray
- string parsing coder@ibm.net
- string parsing Chris Gray
- string parsing coder@ibm.net
- string parsing Jon A. Lambert
- string parsing Adam Wiggins
- string parsing Felix A. Croes
- string parsing Ola Fosheim Grøstad
- string parsing Chris Gray
- string parsing Felix A. Croes
- string parsing Nathan Yospe
- string parsing Felix A. Croes
- string parsing Nathan Yospe
- string parsing coder@ibm.net
- string parsing Chris Gray
- string parsing Nathan Yospe
- string parsing Chris Gray
- string parsing coder@ibm.net
- Idea: Hive-mind monster coder@ibm.net
- Idea: Hive-mind monster Adam Wiggins
- Idea: Hive-mind monster coder@ibm.net
- Idea: Hive-mind monster Sauron
- Idea: Hive-mind monster Derrick Jones
- Idea: Hive-mind monster Michael Hohensee
- Idea: Hive-mind monster Brandon J. Rickman
- Idea: Hive-mind monster coder@ibm.net
- Idea: Hive-mind monster Derrick Jones
- Idea: Hive-mind monster coder@ibm.net
- Idea: Hive-mind monster coder@ibm.net
- Idea: Hive-mind monster coder@ibm.net
- Skill Listing - Part II Jon A. Lambert
- Skill Listing - Part II Derrick Jones
- Skill Listing - Part I Jon A. Lambert
- Poison List - Part II Jon A. Lambert
- Poison List - Part III Jon A. Lambert
- Poison List - Part IV Jon A. Lambert
- Poison List - Part I Jon A. Lambert