[section1]
identifier1=arbitrary string 1
identifier2=arbitrary string 2

[section2]
identifier3=arbitrary string 3
identifier4=arbitrary string 4

grammar EDS;

file:   COMMENT* NEWLINE* section* ;

section
    :   '[' ID ']' NEWLINE ( COMMENT | assign | NEWLINE)* ;

assign
    :   ID STRING;

ID  :   [a-zA-Z0-9_]+ ;

STRING
    :   '=' .*? 'r'? 'n';

NEWLINE
    :   'r'? 'n' ;

WS  :   [ t]+ -> skip ;

COMMENT
    :   ';' .*? 'r'? 'n' -> skip ;