update metagrammar

[sbp.git] / tests / meta.g

diff --git a/tests/meta.g b/tests/meta.g
index 84f9dd2..b1552f1 100644 (file)
--- a/tests/meta.g
+++ b/tests/meta.g
@@ -1,36 +1,36 @@
-s             =  !ws Grammar !ws
+s             = ws Grammar ws
 
-Grammar       =  NonTerminal +/ ws
+Grammar::     = Declaration +/ ws
 
-NonTerminal   =  Word "=" RHS /ws
+Declaration   = NonTerminal
+              | ^"#import" FileName            /ws
+              | ^"#import" FileName "as" Word  /ws
 
-// use 'a'-'z' or 'a-z' instead of [a-z]?
-// EOF token?
-// #include (with renaming?)
-// ANTLR uses ! and ^ suffixes
-        
-RHS           =  (Sequence +/ (!ws "|" !ws)) +/ (!ws ">" !ws)
+FileName::    = (~[\r\n ] | escaped)+ -> [\r\n ]
 
-Elements      =  e*/ws
+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)
 
-PreSequence   = ps::  Elements
-              |       (Quoted|Word)   ^"::" PreSequence /ws
-              >       PreSequence     ^"/"      e       /ws
-              |       PreSequence     ^"->"     e       /ws
+Elements::    = e*/ws
 
-Sequence      = psx:: PreSequence
-              |       Sequence ^"&"  Elements /ws
-              |       Sequence ^"&~" Elements /ws
+PreSequence   = Elements
+              | (Quoted|Word)   ^"::" PreSequence /ws
+              > PreSequence     ^"/"      e       /ws
+              | PreSequence     ^"->"     e       /ws
 
-ec            = ~[\-\]\\]
-              | escaped
-
-Range         = range:: ec
-              |         ec ^"-" ec
+Sequence      = PreSequence
+              | Sequence ^"&"  Elements /ws
+              | Sequence ^"&~" Elements /ws
 
-e             =                (Quoted|Word) ^":" e
-              > nonTerminal::          Word
-              | literal::       Quoted
+e             =                                   e ^"!"
+              >                (Quoted|Word) ^":" e
+              >                NonTerminalReference:: Word
+              |                Literal:: Quoted
               |                  ^"()"
               |                  ^"{" PreSequence "}"    /ws
               |                  ^"["  Range* "]"
@@ -42,22 +42,26 @@ e             =                (Quoted|Word) ^":" e
               |                e ^"*"                    /ws -> ~[*]
               |                e ^"**/" e                /ws        
               |                e ^"*/"  e                /ws        
-              |                  ^"!"   e                /ws
               |                e ^"?"                    /ws
               |                  ^"^"   Quoted
-              |     "(" Word     ^")"                    /ws
+              |                   "(" Word  ^")"
               >                  ^"(" RHS  ")"           /ws
               |                  ^"~" e
-              >  "^^"::           "^" 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++
+              |                  ^"\\{"
+              |                  ^"\\}"
+
+Word::        = [.a-zA-Z0-9_]++
+Quoted::      = "\"" (~[\"\\] | escaped)+ "\""
+              | "\"\""
+
+Range::       = ec
+              | ec "-" ec
+
+ec            = ~[\-\]\\]
+              | escaped
+escaped       = "\n"::  "\\n"
+              | "\r"::  "\\r"
+              |         "\\" ~[nr]
+
+ws!           = [ \r\n]** ("//" ~[\n]* "\n" ws)?
+