[antlr-interest] Converting ANTLR-Lexer to FLEX

[Ric Klaren]

Hi,

On Mon, 06 Dec 2004 03:26:33 +0200, Serg <sun2 at public.kherson.ua> wrote:
> I have such ANTLR-lexer rule:
> 
> STRING_LITERAL
>     :   QUOTE!
>             ( ~('\'')
>             | ( QUOTE QUOTE! )
>             )*
>         QUOTE!
>     ;
> 
> How can I write this rule on the Flex?
> I can't understand how to do this operation (QUOTE!) in the Flex.

You normally use a lexer state for inside the string. The
examples/cpp/flexLexer example from the distribution has a lexer that
has a way to do this in flex/lex. It might be that this example was
not yet updated in the 2.7.4 release in that case pickup a snapshot
from http://wwwhome.cs.utwente.nl/~klaren/antlr/ that one should have
it I think. Or drop me a line personally and I'll send the .l file to
you.

Cheers,

Ric


 
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