[antlr-interest] Grammars with too many keywords?

[Vadim Tropashko]

The grammar that I'm working on allows keywords as
identifiers. For example, "A" is a keyword, as a part
a part of very reasonable declaration: 

set_predicate:
  is_prefix d_o_tNOTd_o_t 'A' 'SET'
;

Naturally, the "A" can be identifier as well:  

IDENTIFIER: 
         ('a'..'z'|'A'..'Z') ( 'a'..'z'|'A'..'Z'
...)*;

So whenever I feed into the parser text like this:

A := ...

I'm getting 

mismatched input 'A' expecting IDENTIFIER

Is there a standard way to approach this problem?
Preferably, the solution should contain as little
redundancies as possible. For example, I could collect
all the keywords and declare them as such, but do I
really have to? Isn't grammar terminal symbol already
assumed to be a keyword?  


 
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