X-Git-Url: http://git.megacz.com/?p=sbp.git;a=blobdiff_plain;f=tests%2Fmeta.g;h=f9e0e67830ed7d37a41b24b27e42e8006c946a49;hp=03bd717eb9acf1410412b3de60be876ec8d5d3af;hb=93ea8e84f6eadb1b2549754bbb832c75e4730e86;hpb=ee2f84c26849ceecf34826f6a2b4f5e1d03a0f2b diff --git a/tests/meta.g b/tests/meta.g index 03bd717..f9e0e67 100644 --- a/tests/meta.g +++ b/tests/meta.g @@ -4,20 +4,17 @@ grammar ::= r +/ ws => "grammar" r ::= word ^"::=" alternatives /ws | word ^"!::=" alternatives /ws -alternatives ::= equiAlt +/ (ws ">" ws) -equiAlt ::= conjuncts +/ (ws "|" ws) +alternatives ::= (conjuncts +/ (ws "|" ws)) +/ (ws ">" ws) -sequence ::= e */ (w**) - > e */ (w**) ws ^"/" e +conjuncts ::= sequence + | sequence ^"&" e*/ws /ws + | sequence ^"&~" e*/ws /ws -ss ::= es => "seq" | es ^"/" e /ws - -conjuncts ::= rewrite - | rewrite ^"&" e*/ws /ws - | rewrite ^"&~" e*/ws /ws - -rewrite ::= sequence /ws => "rewrite" - | sequence ^"=>" (word|quoted) /ws +ps ::= e*/ws => "ps" +psx ::= ps + > ps ^"/" e /ws +sequence ::= psx + | psx ^"=>" (word|quoted) /ws ec ::= [~\-\]\\\~] | escaped @@ -25,9 +22,10 @@ ec ::= [~\-\]\\\~] range ::= ec => "range" | ec ^"-" ec -e ::= word => "nonTerminal" - | [(][)] => "epsilon" - | ^"{" alternatives "}" /ws +e ::= word => "nonTerminal" + | quoted => "literal" + | ^"()" + | ^"{" sequence "}" /ws | ^"[" (range*) "]" | ^"[~" (range*) "]" | ^"^" quoted /ws @@ -39,17 +37,14 @@ e ::= word => "nonTerminal" | e ^"+/" e /ws | e ^"?" /ws - | quoted => "literal" - - | "(" word ^")" /ws - > ^"(" alternatives ")" /ws + | "(" word ^")" /ws + > ^"(" alternatives ")" /ws w !::= " " | "//" ([~\n]*) "\n" | "\n" | "\r" -an ::= [a-zA-Z0-9_] -word ::= an++ +word ::= [a-zA-Z0-9_]++ quoted ::= "\"" (([~\"\\] | escaped)+) "\"" | "\"\"" => "" escaped ::= "\\n" => "\n"