|Semantic actions in LR parser email@example.com (1993-04-02)|
|Re: Semantic actions in LR parser firstname.lastname@example.org (1993-04-02)|
|Re: Semantic actions in LR parser email@example.com (1993-04-03)|
|Re: Semantic actions in LR parser firstname.lastname@example.org (1993-04-05)|
|Semantic actions in LR parser email@example.com (1993-04-06)|
|Re: Semantic actions in LR parser firstname.lastname@example.org (1993-04-07)|
|Semantic actions in LR parser email@example.com (1993-04-14)|
|Semantic actions in LR parser firstname.lastname@example.org (1993-04-15)|
|From:||email@example.com (Mitchell Wand)|
|Keywords:||LALR, parse, bibliography, comment|
|Organization:||College of Computer Science, Northeastern University|
|Date:||Wed, 7 Apr 1993 17:24:25 GMT|
firstname.lastname@example.org (Chris Clark USSG) writes:
> One curious feature which falls out, is that if you can detect two actions
> are the same you can execute the action even if the eventual reduces are
> parts of two distinct productions. That allows you to defer (and
> eliminate) some conflicts. (In our model, two actions are the same if
> they are character for character the same string.) Eliminating the pseudo
> productions, also means smaller state tables.
Ahh, this sounds like you've rediscovered a result similar to the one in
Brown, C. & Purdom, P. "Semantic Routines and LR(k) Parsers," Acta
Informatica 14 (1980), 299--315.
I suppose 1980 is before the beginning of time for a lot of folks.
I wonder if Chris could compare his results with the Brown-Purdom results.
College of Computer Science, Northeastern University
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Internet: email@example.com Fax: (617) 437 5121
[In 1980 yacc was already eight years old. -John]
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