reorganize the directories under src, and rescue the JavaScript interpreter from deprecated

deprecated/exper/EditShell.hs

@@ -0,0 +1,136 @@
+module Main where
+
+import PGF.Editor
+import PGF
+
+import Data.Char
+import System (getArgs)
+
+-- a rough editor shell using the PGF.Edito API
+-- compile:
+--   cd .. ; ghc --make exper/EditShell.hs
+-- use:
+--   EditShell file.pgf
+
+main = do
+  putStrLn "Hi, I'm the Editor! Type h for help on commands."
+  file:_ <- getArgs
+  pgf <- readPGF file
+  let dict = pgf2dict pgf
+  let st0 = new (startCat pgf)
+  let lang = head (languages pgf) ---- for printnames; enable choosing lang
+  editLoop pgf dict lang st0        -- alt 1: all editing commands
+--  dialogueLoop pgf dict lang st0  -- alt 2: just refinement by parsing (see bottom)
+
+editLoop :: PGF -> Dict -> Language -> State -> IO State
+editLoop pgf dict lang st = do
+  putStrLn $ 
+    if null (allMetas st) 
+      then unlines 
+             (["The tree is complete:",prState st] ++ linearizeAll pgf (stateTree st))
+    else if isMetaFocus st 
+      then "I want something of type " ++ showType (focusType st) ++
+         " (0 - " ++ show (length (refineMenu dict st)-1) ++ ")"
+    else "Do you want to change this node?" 
+  c   <- getLine
+  st' <- interpret pgf dict st c
+  editLoop pgf dict lang st'
+
+interpret :: PGF -> Dict -> State -> String -> IO State
+interpret pgf dict st c = case words c of
+  "r":f:_ -> do
+    let st' = goNextMeta (refine dict (mkCId f) st)
+    prLState pgf st'
+    return st'
+  "p":ws -> do
+    let tts = parseAll pgf (focusType st) (dropWhile (not . isSpace) c)
+    st' <- selectReplace dict (concat tts) st
+    prLState pgf st'
+    return st'
+  "a":_ -> do
+    t:_  <- generateRandom pgf (focusType st)
+    let st' = goNextMeta (replace dict t st)
+    prLState pgf st'
+    return st'
+  "d":_ -> do
+    let st' = delete st
+    prLState pgf st'
+    return st'
+  "m":_   -> do
+    putStrLn (unwords (map prCId (refineMenu dict st)))
+    return st
+  d : _ | all isDigit d -> do
+    let f = refineMenu dict st !! read d
+    let st' = goNextMeta (refine dict f st)
+    prLState pgf st'
+    return st' 
+  p@('[':_):_ -> do
+    let st' = goPosition (mkPosition (read p)) st
+    prLState pgf st'
+    return st'
+  ">":_ -> do
+    let st' = goNext st
+    prLState pgf st'
+    return st'
+  "x":_ -> do
+    mapM_ putStrLn [show (showPosition p) ++ showType t  | (p,t) <- allMetas st]
+    return st
+  "h":_ -> putStrLn commandHelp >> return st
+  _ -> do
+    putStrLn "command not understood"
+    return st
+
+prLState pgf st = do
+  let t = stateTree st
+  putStrLn (unlines ([
+    "Now I have:","",
+     prState st] ++ 
+     linearizeAll pgf t))
+
+-- prompt selection from list of trees, such as ambiguous choice
+selectReplace :: Dict -> [Tree] -> State -> IO State
+selectReplace dict ts st = case ts of
+  []  -> putStrLn "no results" >> return st
+  [t] -> return $ goNextMeta $ replace dict t st 
+  _   -> do
+    mapM_ putStrLn $ "choose tree by entering its number:" : 
+      [show i ++ " : " ++ showTree t | (i,t) <- zip [0..] ts]
+    d <- getLine
+    let t = ts !! read d
+    return $ goNextMeta $ replace dict t st
+
+commandHelp = unlines [
+  "a           -- refine with a random subtree",
+  "d           -- delete current subtree",
+  "h           -- display this help message",
+  "m           -- show refinement menu",
+  "p Anything  -- parse Anything and refine with it",
+  "r Function  -- refine with Function",
+  "x           -- show all unknown positions and their types", 
+  "4           -- refine with 4th item from menu (see m)", 
+  "[1,2,3]     -- go to position 1,2,3",
+  ">           -- go to next node"
+  ]    
+
+----------------
+-- for a dialogue system, working just by parsing; questions are cat printnames
+----------------
+
+dialogueLoop :: PGF -> Dict -> Language -> State -> IO State
+dialogueLoop pgf dict lang st = do
+  putStrLn $ 
+    if null (allMetas st) 
+    then "Ready!\n  " ++ unlines (linearizeAll pgf (stateTree st))
+    else if isMetaFocus st 
+      then showPrintName pgf lang (focusType st)
+    else "Do you want to change this node?" 
+  c   <- getLine
+  st' <- interpretD pgf dict st c
+  dialogueLoop pgf dict lang st'
+
+interpretD :: PGF -> Dict -> State -> String -> IO State
+interpretD pgf dict st c = do
+  let tts = parseAll pgf (focusType st) c
+  st' <- selectReplace dict (concat tts) st
+--  prLState pgf st'
+  return st'