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

src/compiler/GF/Command/Abstract.hs

@@ -0,0 +1,79 @@
+module GF.Command.Abstract where
+
+import PGF.CId
+import PGF.Data
+
+type Ident = String
+
+type CommandLine = [Pipe]
+
+type Pipe = [Command]
+
+data Command
+   = Command Ident [Option] Argument
+   deriving (Eq,Ord,Show)
+
+data Option
+  = OOpt Ident
+  | OFlag Ident Value
+  deriving (Eq,Ord,Show)
+
+data Value
+  = VId  Ident
+  | VInt Int
+  | VStr String
+  deriving (Eq,Ord,Show)
+
+data Argument
+  = AExpr Expr
+  | ANoArg
+  | AMacro Ident
+  deriving (Eq,Ord,Show)
+
+valCIdOpts :: String -> CId -> [Option] -> CId
+valCIdOpts flag def opts =
+  case [v | OFlag f (VId v) <- opts, f == flag] of
+    (v:_) -> mkCId v
+    _     -> def
+
+valIntOpts :: String -> Int -> [Option] -> Int
+valIntOpts flag def opts =
+  case [v | OFlag f (VInt v) <- opts, f == flag] of
+    (v:_) -> v
+    _     -> def
+
+valStrOpts :: String -> String -> [Option] -> String
+valStrOpts flag def opts =
+  case [v | OFlag f v <- opts, f == flag] of
+    (VStr v:_) -> v
+    (VId  v:_) -> v
+    (VInt v:_) -> show v
+    _          -> def
+
+isOpt :: String -> [Option] -> Bool
+isOpt o opts = elem o [x | OOpt x <- opts]
+
+isFlag :: String -> [Option] -> Bool
+isFlag o opts = elem o [x | OFlag x _ <- opts]
+
+optsAndFlags :: [Option] -> ([Option],[Option])
+optsAndFlags = foldr add ([],[]) where
+  add o (os,fs) = case o of
+    OOpt _    -> (o:os,fs)
+    OFlag _ _ -> (os,o:fs)
+
+prOpt :: Option -> String
+prOpt o = case o of
+  OOpt i    -> i
+  OFlag f x -> f ++ "=" ++ show x
+
+mkOpt :: String -> Option
+mkOpt = OOpt
+
+-- abbreviation convention from gf commands
+getCommandOp s = case break (=='_') s of
+     (a:_,_:b:_) -> [a,b]  -- axx_byy --> ab
+     _ -> case s of
+       [a,b] -> s          -- ab  --> ab
+       a:_ -> [a]          -- axx --> a
+