X-Git-Url: http://git.megacz.com/?p=sbp.git;a=blobdiff_plain;f=tests%2Fmeta.g;h=f06eb2f42010e4165a6b498eb7203b98d8645e84;hp=43f539a77a4f0c4229a75a5cf9b6bdd3cb0ddede;hb=61a0c83fd40b98292b2dfe1eaba237eb804b2cb4;hpb=86e7e1298601b60df964e3c0a71f3fe3cca230b8 diff --git a/tests/meta.g b/tests/meta.g index 43f539a..f06eb2f 100644 --- a/tests/meta.g +++ b/tests/meta.g @@ -1,59 +1,77 @@ -s = !ws Grammar ws => "gram" -Grammar = NonTerminal +/ ws => "grammar" -NonTerminal = word !wp ^"=" !wp RHS - -RHS = (Conjuncts +/ (!ws "|" !ws)) +/ (!ws ">" !ws) - -Conjuncts = Sequence - | Sequence ^"&" Elements /ws - | Sequence ^"&~" Elements /ws -Elements = e*/ws - -PreSequence = Elements => "ps" - | PreSequence !wp ^"/" !ws e - | PreSequence ^"->" e /ws -// | (Quoted|word) ^"::" PreSequence /ws - | PreSequence ^"=>" ("[]"|"()"|word|Quoted) /ws -Sequence = PreSequence => "psx" - -ec = ~[\-\]\\] +//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] -Range = ec => "range" - | ec ^"-" ec - -e = - (Quoted|word) ^":" e - > word => "nonTerminal" - | Quoted => "literal" - | ^"()" - | ^"{" Sequence "}" /ws - | ^"[" Range* "]" - | e ^"++" /ws -> ~[/] - | e ^"+" /ws -> ~[+] - | e ^"++/" e /ws - | e ^"+/" e /ws - | e ^"**" /ws -> ~[/] - | e ^"*" /ws -> ~[*] - | e ^"**/" e /ws - | e ^"*/" e /ws - | ^"!" e /ws - | e ^"?" /ws - | ^"^" Quoted /ws - - | "(" word ^")" /ws - > ^"(" RHS ")" /ws - | ^"~" e - -word = [a-zA-Z0-9_]++ -Quoted = "\"" ((~[\"\\] | escaped)+) "\"" - | "\"\"" => "" -escaped = "\\n" => "\n" - | "\\r" => "\r" - | "\\" ~[nr] - - -w = " " | "\n" | "\r" -ws = w** => () - | w** "//" ~[\n]* "\n" ws => () -wp = w++ +ws! = [ \r\n]** + | [ \r\n]** "//" ~[\n]* "\n" ws