Overlapping tokens in lezer

Lezer
3

Thanks a lot for the quick reply! I’ve gone the second road and am using the generic identifier.

Here’s my new grammar:

@top Program { (lineWithNewline | emptyLine)* lineWithoutNewline?  }

@skip { space | LineComment }

lineWithNewline { Line newLine }
lineWithoutNewline { Line }
emptyLine { newLine }

Line {
  (SymbolDeclaration Command)
  | SymbolDeclaration
  | Command
}

SymbolDeclaration {
  Symbol ":"
}

Symbol {
  identifier
}

Command {
  identifier
}

@tokens {
  identifier { $[a-zA-Z0-9_$]+ }

  LineComment { "#" ![\n]* }

  space { $[ \t\r]+ }

  newLine { "\n" }
}