-s ::= w* Grammar w* => "gram"
-Grammar ::= R+ => "grammar"
-R ::= word ^"::=" Alternatives
- | word ^"!::=" Alternatives
+s ::= ws grammar ws => "gram"
+ws !::= w**
+grammar ::= r+/ws => "grammar"
+r ::= word ^"::=" alternatives /ws
+ | word ^"!::=" alternatives /ws
ec ::= [~\]\\\-\~] | escaped
-Alternatives ::= EquiAlt +/ ">"
-EquiAlt ::= Conjuncts +/ "|" => "alternatives"
+alternatives ::= equiAlt +/ (ws ">" ws)
+equiAlt ::= conjuncts +/ (ws "|" ws) => "alternatives"
-Sequence ::= E+ ^"/" E
- > E+
+sequence ::= Es
+ > Es ^"/" E /ws
+Es ::= E+
+//es ::= E+/ws
-Conjuncts ::= Rewrite
- | Rewrite ^"&" Sequence
- | Rewrite ^"&~" Sequence
+conjuncts ::= rewrite
+ | rewrite ^"&" sequence /ws
+ | rewrite ^"&~" sequence /ws
-Rewrite ::= Sequence => "rewrite"
- | Sequence ^"=>" word
- | Sequence ^"=>" quoted
- | Sequence "=>" "()" => "wrap"
+rewrite ::= sequence /ws => "rewrite"
+ | sequence ^"=>" word /ws
+ | sequence ^"=>" quoted /ws
+ | sequence "=>" "()" /ws => "wrap"
range ::= ec => "range0" | ec ^"-" ec => "range0"
E ::= word => "nonTerminalY"
| [(][)] => "epsilon"
- | ^"{" Alternatives "}"
+ | ^"{" alternatives "}"
| "[" [\~]? range* "]" => "range"
| E ^"*/" E
| E ^"+/" E
| (E ^"++" > E ^"+")
| "(" word ^")"
- > ^"(" Alternatives ")"
+ > ^"(" alternatives ")"
w !::= " "
| "//" [~\n]* "\n"