can an element contain attribute as parsed by parser generated by ANTLR? if so, how?

Question

I am following this tutorial and successfully replicated its behavior except that I am using Antlr 4.7 instead of the 4.5 that the tutorial was using.

I am trying to bui

Answer 1

I'm not entirely sure what exactly you want but for the provided examples this grammar should do the job:

payments: (payment NL)* ;  
payment: PAY receiver amount=NUMBER ;  
receiver: surname=ID (lastname=ID)? ;  

PAY: 'pay' ;
NUMBER: [0-9]+ (',' [0-9]+)+ ('.' [0-9]+)? ;  
ID: [a-zA-Z0-9_]+ ;
NL: '\n' | '\r\n' ;  
WS: [\t ]+ -> skip ;

If this is what you were asking for I will add some more explanation if needed...