checkpoint

[sbp.git] / tests / meta.g

diff --git a/tests/meta.g b/tests/meta.g
index 3c191d4..713383a 100644 (file)
--- a/tests/meta.g
+++ b/tests/meta.g
@@ -1,37 +1,39 @@
 s         ::=  ws grammar ws                  => "gram"
 ws       !::=  w**
-grammar   ::=  r+/ws => "grammar"
+grammar   ::=  r $$ ws => "grammar"
 r         ::=  word  ^"::=" alternatives /ws
             |  word ^"!::=" alternatives /ws
 
-ec        ::=  [~\]\\\-\~] | escaped
-
-alternatives  ::=  equiAlt   +/ (ws ">" ws)
-equiAlt       ::=  conjuncts +/ (ws "|" ws)          => "alternatives"
+alternatives  ::=  equiAlt   $$ (ws ">" ws)
+equiAlt       ::=  conjuncts $$ (ws "|" ws)          => "alternatives"
 
 sequence    ::= Es
-              > Es ^"/" e  /ws
+              > Es ws ^"/" e
 Es          ::= e+
-es          ::= e+/ws
+es          ::= e %% ws
 
+ss ::= es | es ^"/" e /ws
 
 conjuncts   ::=  rewrite
-              |  rewrite ^"&"  sequence   /ws
-              |  rewrite ^"&~" sequence   /ws
+              |  rewrite ^"&"  e%%ws   /ws
+              |  rewrite ^"&~" e%%ws   /ws
 
 rewrite  ::=  sequence                  /ws        => "rewrite"
            |  sequence ^"=>" word       /ws
            |  sequence ^"=>" quoted     /ws
            |  sequence  "=>" "()"       /ws        => "wrap"
 
+ec       ::= [~\-\]\\\~]
+           | escaped
+
 range    ::= ec          => "range0"
-           | ec ^"-" ec  => "range0"
+           | ec ^"-" ec  => "range1"
 
 e        ::= word                             => "nonTerminalY"
            |    [(][)] => "epsilon"
            |    ^"{" alternatives "}"   /ws
-           |     "[" [\~]?  range* "]"        => "range"
-           |  e ^"+/" e                 /ws
+           |     "["  ranges "]"        => "range"
+           |     "[~" ranges "]"        => "rangex"
            |  e ^"%%" e                 /ws
            |  e ^"$$" e                 /ws
            |  e ^"?"                    /ws
@@ -51,6 +53,8 @@ e        ::= word                             => "nonTerminalY"
            |     "(" word ^")"          /ws
            >    ^"(" alternatives ")"   /ws
 
+ranges ::= range*
+
 w       !::= " "
            | "//" [~\n]* "\n"
            | "\n"