[antlr-interest] nondeterminism in lexer rule

[Xue Yong Zhi]

Please check java.g to see how it handle keywords. In general you should 
  create lexer rule for each kewyrod., just refer them in your parser 
grammar:

YourParser extends Parser;
...
ifExpression
: "if" expression "then" expression "else" expression
;
...

YourLexer extends Lexer;
...
//remove those IF, THEN etc
...

> 
> IF      :       "if"    ;
> 
> THEN    :       "then"  ;
> 
> ELSE    :       "else"  ;
> 
> GOTO    :       "goto"  ;
> 
> DOT     :       '.'     ;
> 
> protected
> 
> LITERAL
> 
>         : (('a'..'z') ('a'..'z'|'0'..'9'| '_' | '@' | '$')*)
> 
>         ;


-- 
Xue Yong Zhi
XRuby (Ruby to Java bytecode compiler):
http://xruby.blogspot.com