SPPTParser

grammar Tree { skip WHITESPACE : "\s+" ;

tree : node ; nodes : node+ ; node : branch | leaf | EMPTY ; branch : NAME '{' nodes '}' ; leaf : LITERAL | pattern ; pattern : PATTERN ':' LITERAL ; PATTERN : "\"(^\"\\|\\.)\"" ; LITERAL : "'(^'\\|\\.)'" ; EMPTY : '§empty' ;

NAME : "a-zA-Z_0-9*" ; //same as IDENTIFIER from OGL.ogl }