-s ::= ws grammar ws => "gram"
-ws !::= w**
-wp !::= w++
-grammar ::= r +/ ws => "grammar"
-
-r ::= word ^"::=" alternatives /ws
- | word ^"!::=" alternatives /ws
-
-alternatives ::= (conjuncts +/ (ws "|" ws)) +/ (ws ">" ws)
-
-conjuncts ::= sequence
- | sequence ^"&" e*/ws /ws
- | sequence ^"&~" e*/ws /ws
-
-ps ::= e*/ws => "ps"
- | (e+/ws ws)? "^" quoted (ws e+/ws)? => "ps2"
-psy ::= ps
- | ps wp ^"/" ws e
-psx ::= psy ^"?=>" e /ws
- | psy ^"!=>" e /ws
- > psy
-sequence ::= quoted => "qprod"
- > psx
- | psx ^"=>" (word|quoted) /ws
-
-ec ::= [~\-\]\\\~]
- | escaped
-
-range ::= ec => "range"
- | ec ^"-" ec
-
-e ::= word => "nonTerminal"
- | quoted => "literal"
- | ^"()"
- | ^"{" sequence "}" /ws
- | ^"[" range* "]"
- | ^"[~" range* "]"
-
- | (e ^"++" /ws > e ^"+" /ws)
- | (e ^"++/" e /ws > e ^"+/" e /ws)
- | (e ^"**" /ws > e ^"*" /ws)
- | (e ^"**/" e /ws > e ^"*/" e /ws)
- | e ^"?" /ws
-
- | "(" word ^")" /ws
- > ^"(" alternatives ")" /ws
-w !::= " "
- | "//" ([~\n]*) "\n"
- | "\n"
- | "\r"
-word ::= [a-zA-Z0-9_]+ !=> [a-zA-Z0-9_]
-quoted ::= "\"" (([~\"\\] | escaped)+) "\""
- | "\"\"" => ""
-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