[antlr-interest] Lexer vs Parser

Sinan sinan.karasu at boeing.com
Wed May 22 08:22:05 PDT 2002


micheal_jor wrote:
> 
> Hi All,
> 
> Following on from my Unicode post, I would appreciate some advice on
> where to place some lexing/parsing decisions.

 I look at the context dependence/well defined token boundaries.

 Mostly do everything you can in the lexer. I did write a Fortran 77
parser
that does mostly everything in the parser. Since fortran-like languages
don't 
have well defined keywords/delimiters.


 

 call xyz(5)= format(write(6,7))

 do 100 i=1.7

 format(x5h)=x(3)

 good luck...

 if then then=else  else if else=then then then=else


 Sinan

 

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