1 s ::= ws grammar ws => "gram"
3 grammar ::= r$$ws => "grammar"
4 r ::= word ^"::=" alternatives /ws
5 | word ^"!::=" alternatives /ws
7 ec ::= [~\]\\\-\~] | escaped
9 alternatives ::= equiAlt $$ (ws ">" ws)
10 equiAlt ::= conjuncts $$ (ws "|" ws) => "alternatives"
19 | rewrite ^"&" sequence /ws
20 | rewrite ^"&~" sequence /ws
22 rewrite ::= sequence /ws => "rewrite"
23 | sequence ^"=>" word /ws
24 | sequence ^"=>" quoted /ws
25 | sequence "=>" "()" /ws => "wrap"
27 range ::= ec => "range0"
28 | ec ^"-" ec => "range0"
30 e ::= word => "nonTerminalY"
32 | ^"{" alternatives "}" /ws
33 | "[" [\~]? range* "]" => "range"
42 | "^" quoted /ws => "care"
47 | (e ws ^"**" > e ws ^"*")
48 | (e ws ^"++" > e ws ^"+")
51 > ^"(" alternatives ")" /ws
58 word ::= an++ => "sify"
59 quoted ::= "\"" ([~\"\\] | escaped)* "\"" => "sify"
60 escaped ::= "\\n" => "\n"