ANTLR : How to replace all characters defined as space with actual space
- by Puneet Pawaia
Hi All,
My ANTLR code is as follow :
LPARENTHESIS : ('(');
RPARENTHESIS : (')');
fragment CHARACTER : ('a'..'z'|'0'..'9'|);
fragment QUOTE : ('"');
fragment WILDCARD : ('*');
fragment SPACE : (' '|'\n'|'\r'|'\t'|'\u000C'|';'|':'|',');
WILD_STRING
: (CHARACTER)*
(
('?')
(CHARACTER)*
)+
;
PREFIX_STRING
: (CHARACTER)+
(
('*')
)+
;
WS : (SPACE) { $channel=HIDDEN; };
PHRASE : (QUOTE)(LPARENTHESIS)?(WORD)(WILDCARD)?(RPARENTHESIS)?((SPACE)+(LPARENTHESIS)?(WORD)(WILDCARD)?(RPARENTHESIS)?)*(SPACE)+(QUOTE);
WORD : (CHARACTER)+;
What I would like to do is to replace all characters marked as space to be replaced with actual space character in the PHRASE. Also if possible, I would then like all continuous spaces to be represented by a single space.
Any help would be most appreciated. For some reason, I am finding it hard to understand ANTLR. Any good tutorials out there ?
