-s ::= w* Grammar w* => "gram"
-Grammar ::= R+ => "grammar"
-R ::= word ^"::=" Alternatives
- | word ^"!::=" Alternatives
-
-ec ::= [~\]\\\-\~] | escaped
-
-Alternatives ::= EquiAlt +/ ">"
-EquiAlt ::= Conjuncts +/ "|" => "alternatives"
-
-Sequence ::= E+ ^"/" E
- > E+
-
-Conjuncts ::= Rewrite
- | Rewrite ^"&" Sequence
- | Rewrite ^"&~" Sequence
-
-Rewrite ::= Sequence => "rewrite"
- | Sequence ^"=>" word
- | Sequence ^"=>" quoted
- | Sequence "=>" "()" => "wrap"
-
-range ::= ec => "range0" | ec ^"-" ec => "range0"
-E ::= word => "nonTerminalY"
- | [(][)] => "epsilon"
- | ^"{" Alternatives "}"
- | "[" [\~]? range* "]" => "range"
- | E ^"*/" E
- | E ^"+/" E
- | E ^"?"
- | E ^"~/~"
-
- | E ^"-" E
-
- | ^"!" E
- | "^" quoted => "care"
- | ^"`" E
- | E ^"#"
- | quoted => "literal"
-
- | (E ^"**" > E ^"*")
- | (E ^"++" > E ^"+")
-
- | "(" word ^")"
- > ^"(" Alternatives ")"
-
-w !::= " "
- | "//" [~\n]* "\n"
- | "\n"
- | "\r"
-an ::= [a-zA-Z0-9_]
-word ::= an++ => "sify"
-quoted ::= "\"" ([~\"\\] | escaped)* "\"" => "sify"
-escaped ::= "\\n" => "\n"
- | "\\r" => "\r"
- | "\\" [~nr]
+//funkanomitron
+s = ws Grammar ws
+
+Grammar:: = Declaration +/ ws
+
+Declaration = NonTerminal
+ | ^"#import" FileName /ws
+ | ^"#import" FileName "as" Word /ws
+
+FileName:: = (~[\r\n ] | escaped)+ -> [\r\n ]
+
+NonTerminal = NonTerminal:: Word ws "=" ws RHS
+ | DropNT:: Word "!" ws "=" ws RHS
+ | Colons:: Word "::" ws "=" ws RHS
+ | Word "*" ws ^"=" ws RHS
+ | Word "*/" Word ws ^"=" ws RHS
+
+RHS:: = ("|":: Sequence +/ (ws "|" ws)) +/ (ws (">" -> ~">") ws)
+
+Elements:: = e*/ws
+
+PreSequence = Elements
+ | (Quoted|Word) ^"::" PreSequence /ws
+ > PreSequence ^"/" e /ws
+ | PreSequence ^"->" e /ws
+
+Sequence = PreSequence
+ | Sequence ^"&" Elements /ws
+ | ^"~~" Elements /ws
+ | Sequence ^"&~" Elements /ws
+
+e = e ^"!"
+ > (Quoted|Word) ^":" e
+ > NonTerminalReference:: Word
+ | Literal:: Quoted
+ | ^"()"
+ | ^"{" PreSequence "}" /ws
+ | ^"[" Range* "]"
+ | e ^"++" /ws -> ~[/]
+ | e ^"+" /ws -> ~[+]
+ | e ^"++/" e /ws
+ | e ^"+/" e /ws
+ | e ^"**" /ws -> ~[/]
+ | e ^"*" /ws -> ~[*]
+ | e ^"**/" e /ws
+ | e ^"*/" e /ws
+ | e ^"?" /ws
+ | ^"^" Quoted
+ | ^"`" e
+ | ^"..."
+ | "(" Word ^")"
+ > ^"(" RHS ")" /ws
+ | "~":: ("~" -> ~"~")! e
+ | ^"\\{"
+ | ^"\\}"
+ | ^">>"
+ | ^"<<"
+
+Word:: = [.a-zA-Z0-9_]++ &~ "."+
+Quoted:: = "\"" (~[\"\\] | escaped)+ "\""
+ | "\"\""
+
+Range:: = ec
+ | ec "-" ec
+ | "<<":: [<][<]
+ | ">>":: [>][>]
+
+ec = ~[\-\]\\<>]
+ | [>] -> ~[>]
+ | [<] -> ~[<]
+ | escaped
+escaped = "\n":: "\\n"
+ | "\r":: "\\r"
+ | "\\" ~[nr]
+
+ws! = [ \r\n]**
+ | [ \r\n]** "//" ~[\n]* "\n" ws