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"
18 | rewrite ^"&" sequence /ws
19 | rewrite ^"&~" sequence /ws
21 rewrite ::= sequence /ws => "rewrite"
22 | sequence ^"=>" word /ws
23 | sequence ^"=>" quoted /ws
24 | sequence "=>" "()" /ws => "wrap"
26 range ::= ec => "range0"
27 | ec ^"-" ec => "range0"
29 e ::= word => "nonTerminalY"
31 | ^"{" alternatives "}" /ws
32 | "[" [\~]? range* "]" => "range"
41 | "^" quoted /ws => "care"
46 | (e ws ^"**" > e ws ^"*")
47 | (e ws ^"++" > e ws ^"+")
50 > ^"(" alternatives ")" /ws
57 word ::= an++ => "sify"
58 quoted ::= "\"" ([~\"\\] | escaped)* "\"" => "sify"
59 escaped ::= "\\n" => "\n"