i dont know what im doing

something-better.peg

Expr0 = Ws expr:(Appl / Expr1) Ws {
  return expr
}

Expr1 = expr:(Func / Name / Expr0Parenthesis) {
  return expr
}

Expr0Parenthesis = '(' expr:Expr0 ')' {
  return expr
}

Appl = exprLeft:Expr1 Ws exprRight:Expr0 {
  return {
    tag: 'application',
    exprLeft: exprLeft,
    exprRight: exprRight
  }
}

Func = '\\' Ws name:Name Ws '.' Ws expr:Expr0 {
  return {
    tag: 'function',
    name: name,
    expr: expr
  }
}

Name = name:[a-z]i+ {
  return {
    tag: 'name',
    value: name.join('')
  }
}

Ws = [ \t\r\n]*