Recognizers : Search order for recognizers

From	Alex <alex@rivadpm.com>
Newsgroups	comp.lang.forth
Subject	Recognizers : Search order for recognizers
Date	2017-03-23 16:47 +0000
Organization	A noiseless patient Spider
Message-ID	<ob0u20$6ml$1@dont-email.me> (permalink)

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Search order for recognizers.

GET-RECOGNIZERS ( stack-id -- rec-n .. rec-1 n ) RECOGNIZER
rec-1 identifies the recognizer that is called first and rec-n the word 
that is called last.

SET-RECOGNIZERS ( rec-n .. rec-1 n stack-id -- ) RECOGNIZER
Set the recognizer stack identified by stack-id with a new set of 
parsing words identified by the execution tokens rec-n .. rec-1. rec-1 
will be the parsing word that is called first, rec-n will be the last one.

For instance where rec:tick recognizes words of the form 'XXXX and 
returns the tick of XXXX;

' rec:tick get-recognizers 1+ set-recognizers

Then

: special  20 ;
: 'special 10 ;

'SPECIAL . will print XT of SPECIAL, not 10. This is unintuitive.

-- 
Alex

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Recognizers : Search order for recognizers Alex <alex@rivadpm.com> - 2017-03-23 16:47 +0000
  Re: Recognizers : Search order for recognizers Alex <alex@rivadpm.com> - 2017-03-23 16:56 +0000
    Re: Recognizers : Search order for recognizers Matthias Trute <matthias.trute@gmail.com> - 2017-03-23 11:59 -0700

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