Sous-ensemble du langage Bootmonkey

chunk = { func_decl }

name = { "a"..."z" | "A"..."Z" | "0"..."9" | "_" }

string ::= """ (* tout et n'importe quoi *) """
number ::= "0"..."9"

block ::= name "=" expr                                                                     |
          "if" expr "{" block "}" { "else if" expr "{" block "}" } [ "else" "{" block "}" ] |
          "loop" [ number ] "{" block "}"                                                   |
          "while" expr "{" block "}"                                                        |
          "for" name "=" number ( "to" | "till" ) number [ "by" number ] "{" block "}"      |
          "for" name "in" iterable "{" block "}"                                            |
          "return" expr                                                                     |
          "break"                                                                           |
          "continue"

expr ::= value               |
         func_call           |
         expr op_binary expr |
         op_binary expr

value ::= "nil"   |
          "false" |
          "true"  |
          number  |
          string  |
          iterable

iterable ::= "[" { expr "," } "]" |
             "{" { string "=>" expr "," } "}"

func_decl ::= func_name "(" par_list ")" "{" block "}"
func_name ::= name { "." name }
par_list ::= par_arg { "," par_arg }
par_arg ::= [ "&" ] name
func_call ::= func_name "(" { expr } ")"

op_binary ::= "+" | "-" | "*" | "/" | "^" | "%" |
              "<" | "<=" | ">" | ">=" | "==" | "<>" |
              "and" | "or"

op_unary ::= "-" | "not"

-----

Exemple d'utilisation :

main() {
  if 1 + 1 == 3 {
    Console.log("1 + 1 = 3")
  } else if 1 + 1 == 2 {
    Console.log("1 + 1 = 2")
  } else {
    Console.log("1 + 1 = ?")
  }

  loop 6 { }

  while true { break }

  for i = 0 to 50 by 2 { }

  for i in [ 0, 50, 60 ] { }

  return 0
}

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Pas entièrement la même syntaxe mais peut servir de référence :
http://pastie.org/pastes/6574368