Hi,
I've a problem with the lexer. Given that grammar:
TEXT : (~'$' | '$' ~'{')+;
OTHER : .;
program : (TEXT|OTHER)+;
If I try with input 'Hola ${ ' it does'nt works. And I can't understand why.
If I look at generated code of rule TEXT it doesn't use a lookahead of
2. In fact when it finds a '$' it enters in the subrule '$' ~'{
without using LA(2) to see that the next caracter is a { and that then
it can't enter the subrule.
In fact as it only compares LA(1)='$' it enters the subrule but then
when it founds the{ it fails with a lexical error.
And I can't understand why the lexer isn't capable to generate code to
compare with LA(1)='$' and LA(2)!='{' to enter the subrule.
Is that the correct behaivour? Why de lexer can aproximate the K=2?
Someone can explain why?
A lot of thanks in advance,
--
Joan Jesús Pujol Espinar
http://www.joanpujol.cat
http://lujop.deviantart.com
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