remove the example-based folder. The code is still in the archive

src/example-based/ExampleService.hs

@@ -1,128 +0,0 @@
-module ExampleService(cgiMain,cgiMain',newPGFCache) where
-import System.Random(newStdGen)
-import System.FilePath((</>),makeRelative)
-import Data.Map(fromList)
-import Data.Char(isDigit)
-import Data.Maybe(fromJust)
-import qualified Codec.Binary.UTF8.String as UTF8 (decodeString)
-import PGF
-import GF.Compile.ToAPI
-import Network.CGI
-import Text.JSON
-import CGIUtils
-import Cache
-import qualified ExampleDemo as E
-
-newPGFCache = newCache readPGF
-
-
-cgiMain :: Cache PGF -> CGI CGIResult
-cgiMain = handleErrors . handleCGIErrors . cgiMain' "." "."
-
-cgiMain' root cwd cache =
-  do command <- getInp "command"
-     environ <- parseEnviron =<< getInp "state"
-     case command of
-       "possibilities"    -> doPossibilities environ
-       "provide_example"  -> doProvideExample root cwd cache environ
-       "abstract_example" -> doAbstractExample cwd cache environ
-       "test_function"    -> doTestFunction cwd cache environ
-       _ -> throwCGIError 400 ("Unknown command: "++command) []
-
-doPossibilities environ =
-  do example_environ <- parseEnviron =<< getInp "example_state"
-     outputJSONP (E.getNext environ example_environ)
-
-doProvideExample root cwd cache environ =
-  do Just lang <- readInput "lang"
-     fun <- getCId "fun"
-     parsePGF <- readParsePGF cwd cache
-     let adjpath path = root</>makeRelative "/" (makeRelative root cwd</>path)
-     pgf <- liftIO . readCache cache . adjpath =<< getInp "grammar"
-     gen <- liftIO newStdGen
-     let Just (e,s) = E.provideExample gen environ fun parsePGF pgf lang
-         res = (showExpr [] e,s)
-     liftIO $ logError $ "proveExample ... = "++show res
-     outputJSONP res
-
-doAbstractExample cwd cache environ =
-  do example <- getInp "input"
-     Just params <- readInput "params"
-     absstr <- getInp "abstract"
-     Just abs <- return $ readExpr absstr
-     liftIO $ logError $ "abstract = "++showExpr [] abs
-     Just cat <- readInput "cat"
-     let t = mkType [] cat []
-     parsePGF <- readParsePGF cwd cache
-     let lang:_ = languages parsePGF
-     ae <- liftIO $ abstractExample parsePGF environ lang t abs example
-     outputJSONP (fmap (\(e,_)->(exprToAPI (instExpMeta params e),e)) ae)
-
-abstractExample parsePGF env lang cat abs example =
-    E.searchGoodTree env abs (parse parsePGF lang cat example)
-
-doTestFunction cwd cache environ =
-  do fun <- getCId "fun"
-     parsePGF <- readParsePGF cwd cache
-     let lang:_ = languages parsePGF
-     Just txt <- return (E.testThis environ fun parsePGF lang)
-     outputJSONP txt
-
-getCId :: String -> CGI CId
-getCId name = maybe err return =<< fmap readCId (getInp name)
-  where err = throwCGIError 400 ("Bad "++name) []
-{-
-getLimit :: CGI Int
-getLimit = maybe err return =<< readInput "limit"
-  where err = throwCGIError 400 "Missing/bad limit" []
--}
-
-readParsePGF cwd cache =
-    do parsepgf <- getInp "parser"
-       liftIO $ readCache cache (cwd</>parsepgf)
-
-parseEnviron s = do state <- liftIO $ readIO s
-                    return $ environ state
-
-getInp name = maybe err (return . UTF8.decodeString) =<< getInput name
-  where err = throwCGIError 400 ("Missing parameter: "++name) []
-
-
-instance JSON CId where
-    showJSON = showJSON . show
-    readJSON = (readResult =<<) . readJSON
-
-instance JSON Expr where
-   showJSON = showJSON . showExpr []
-   readJSON = (m2r . readExpr =<<) . readJSON
-
-m2r = maybe (Error "read failed") Ok
-
-readResult s = case reads s of
-                 (x,r):_ | lex r==[("","")] -> Ok x
-                 _ -> Error "read failed"
-
---------------------------------------------------------------------------------
---            cat  lincat  fun  lin       fun  cat    cat
-environ :: ([(CId, CId)],[(CId, Expr)],[((CId, CId), [CId])]) -> E.Environ
-environ (lincats,lins0,funs) =
-    E.initial (fromList lincats) concmap fs allfs
-  where
-    concmap = fromList lins
-    allfs = map E.mkFuncWithArg funs
-    fs = [E.mkFuncWithArg f | f@((fn,_),_)<-funs, fn `elem` cns]
-    cns = map fst lins
-    lins = filter (not . E.isMeta .snd) lins0
-
-
-instExpMeta :: [CId] -> Expr -> Expr
-instExpMeta ps = fromJust . readExpr . instMeta ps . showExpr []
-
-instMeta :: [CId] -> String -> String
-instMeta ps s =
-  case break (=='?') s of
-    (s1,'?':s2) ->
-       case span isDigit s2 of
-         (s21@(_:_),s22) -> s1++show (ps!!(read s21-1))++instMeta ps s22
-         ("",s22) -> s1++'?':instMeta ps s22
-    (_,_) -> s