grammar KanbanDSL2;

options {
    output=AST;
}

tokens {
    UNIT;
    STAGE;
    CARDS;
    NAME;
    LIMIT;
}

stages  :   stage+
        -> ^(UNIT stage+)
    ;

stage   :   name (':' limit)? (cards|substages) ';'
        -> ^(STAGE name limit? cards? substages?)
    ;

substages
    :   substage+
    ;

substage:   '[' name (':' limit)? cards ']'
        -> ^(STAGE name limit? cards)
    ;

limit   :   INT
        -> LIMIT[$text]
    ;

cards   :   '(' (name (',' name)*)? ')'
        -> ^(CARDS name*)
    ;

name
    :   ID+
        -> NAME[$text]
    ;

ID  :   ('a'..'z'|'A'..'Z'|'_'|'!') ('a'..'z'|'A'..'Z'|'0'..'9'|'_'|'!')*
    ;

INT :   '0'..'9'+
    ;

COMMENT
    :   '//' ~('\n'|'\r')* '\r'? '\n' {$channel=HIDDEN;}
    |   '/*' ( options {greedy=false;} : . )* '*/' {$channel=HIDDEN;}
    ;

WS  :   ( ' '
        | '\t'
        | '\r'
        | '\n'
        ) {$channel=HIDDEN;}
    ;