Re: yacc specifications for HP's SPL

Dennis Handly <dhandly@hpcupt3.cup.hp.com>
Tue, 9 Apr 91 22:24:00 pdt

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Re: yacc specifications for HP's SPL dhandly@hpcupt3.cup.hp.com (Dennis Handly) (1991-04-09)
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Newsgroups: comp.compilers
From: Dennis Handly <dhandly@hpcupt3.cup.hp.com>
Keywords: SPL, yacc
Organization: Compilers Central
References: <1991Apr05.053511.10895@iecc.cambridge.ma.us>
Date: Tue, 9 Apr 91 22:24:00 pdt

The SPL compiler for the HP3000s (Non PA-RISC) is basically a recursive
descent ad-hoc compiler. (You wouldn't want to look at the code.) It
tries to optimize everything at a peep-hole basis. It is difficult to
maintain.


HP's COBOL compiler for HP3000s uses better technology that that. It uses
3 LALR parsers, one for each 'real' division.


Anyway, there was an attempt to use TWS to write a grammar for SPL so that
it could be translated to HP-Pascal. It wasn't used very much. I forget
what parts of the language had difficulties.


I don't know what Splash!, a third party product, is using for its
parsing.


I think there were other companies that offered a SPL to C translator.
--

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