printing grammarReference.js with gfc -jsref

src/GF/Devel/GFC.hs

@@ -50,20 +50,21 @@ file2gfcc f =
 
 ---- TODO: nicer and richer print options
 
-alsoPrint opts abs gr (opt,name) =
+alsoPrint opts abs gr (opt,name) = do
-      if oElem (iOpt opt) opts 
+  if oElem (iOpt opt) opts 
-        then do
+    then do
-          let outfile = name
+      let outfile = name
-          let output = prGFCC opt gr
+      let output = prGFCC opt gr
-          writeFile outfile output
+      writeFile outfile output
-          putStrLn $ "wrote file " ++ outfile
+      putStrLn $ "wrote file " ++ outfile
-        else return ()
+    else return ()
 
 printOptions = [
   ("haskell","GSyntax.hs"),
   ("haskell_gadt","GSyntax.hs"),
-  ("js","grammar.js")
+  ("js","grammar.js"),
+  ("jsref","grammarReference.js")
   ]
 
 usageMsg = 
-  "usage: gfc (-h | --make (-noopt) (-js | -haskell | -haskell_gadt)) (-src) FILES"
+  "usage: gfc (-h | --make (-noopt) (-js | -jsref | -haskell | -haskell_gadt)) (-src) FILES"

src/GF/Devel/GFCCtoJS.hs

@@ -1,4 +1,4 @@
-module GF.Devel.GFCCtoJS (gfcc2js) where
+module GF.Devel.GFCCtoJS (gfcc2js,gfcc2grammarRef) where
 
 import qualified GF.GFCC.Macros as M
 import qualified GF.GFCC.DataGFCC as D
@@ -84,3 +84,23 @@ children = JS.Ident "cs"
 
 new :: String -> [JS.Expr] -> JS.Expr
 new f xs = JS.ENew (JS.Ident f) xs
+
+-- grammar reference file for js applications. AR 10/11/2007
+
+gfcc2grammarRef :: D.GFCC -> String
+gfcc2grammarRef gfcc =
+  encodeUTF8 $ refs
+ where
+   C.CId abstr = D.absname gfcc
+   refs = unlines $ [
+     "// Grammar Reference",
+     "function concreteReference(concreteSyntax, concreteSyntaxName) {",
+     "this.concreteSyntax = concreteSyntax;",
+     "this.concreteSyntaxName = concreteSyntaxName;",
+     "}",
+     "var myAbstract = " ++ abstr ++ " ;",
+     "var myConcrete = new Array();"
+     ] ++ [
+     "myConcrete.push(new concreteReference(" ++ c ++ ",\"" ++ c ++ "\"));" 
+        | C.CId c <- D.cncnames gfcc]
+

src/GF/Devel/PrintGFCC.hs

@@ -11,4 +11,5 @@ prGFCC printer gr = case printer of
   "haskell" -> grammar2haskell gr
   "haskell_gadt" -> grammar2haskellGADT gr
   "js" -> gfcc2js gr
+  "jsref" -> gfcc2grammarRef gr
   _ -> printGFCC gr