+{-# LANGUAGE CPP #-}
{-# LANGUAGE OverloadedStrings #-}
module Mate.Utilities where
import Mate.Types
--- TODO: actually this function already exists in hs-java-0.3!
-lookupMethod :: B.ByteString -> Class Resolved -> Maybe (Method Resolved)
-lookupMethod name cls = look (classMethods cls)
- where
- look [] = Nothing
- look (f:fs)
- | methodName f == name = Just f
- | otherwise = look fs
-
-buildMethodID :: Class Resolved -> Word16 -> MethodInfo
+buildMethodID :: Class Direct -> Word16 -> MethodInfo
buildMethodID cls idx = MethodInfo (ntName nt) rc (ntSignature nt)
- where
- (CMethod rc nt) = (constsPool cls) M.! idx
+ where (rc, nt) = case constsPool cls M.! idx of
+ (CMethod rc' nt') -> (rc', nt')
+ (CIfaceMethod rc' nt') -> (rc', nt')
+ _ -> error "buildMethodID: something wrong. abort."
-buildStaticFieldID :: Class Resolved -> Word16 -> StaticFieldInfo
+buildStaticFieldID :: Class Direct -> Word16 -> StaticFieldInfo
buildStaticFieldID cls idx = StaticFieldInfo rc (ntName fnt)
- where (CField rc fnt) = (constsPool cls) M.! idx
+ where (CField rc fnt) = constsPool cls M.! idx
-buildFieldOffset :: Class Resolved -> Word16 -> (B.ByteString, B.ByteString)
+buildFieldOffset :: Class Direct -> Word16 -> (B.ByteString, B.ByteString)
buildFieldOffset cls idx = (rc, ntName fnt)
- where (CField rc fnt) = (constsPool cls) M.! idx
+ where (CField rc fnt) = constsPool cls M.! idx
-buildClassID :: Class Resolved -> Word16 -> B.ByteString
+buildClassID :: Class Direct -> Word16 -> B.ByteString
buildClassID cls idx = cl
- where (CClass cl) = (constsPool cls) M.! idx
+ where (CClass cl) = constsPool cls M.! idx
-methodGetArgsCount :: Class Resolved -> Word16 -> Word32
+methodGetArgsCount :: Class Direct -> Word16 -> Word32
methodGetArgsCount cls idx = fromIntegral $ length args
where
- (CMethod _ nt) = (constsPool cls) M.! idx
+ nt = case constsPool cls M.! idx of
+ (CMethod _ nt') -> nt'
+ (CIfaceMethod _ nt') -> nt'
+ _ -> error "methodGetArgsCount: something wrong. abort."
(MethodSignature args _) = ntSignature nt
-- TODO(bernhard): Extend it to more than just int, and provide typeinformation
-methodHaveReturnValue :: Class Resolved -> Word16 -> Bool
+methodHaveReturnValue :: Class Direct -> Word16 -> Bool
methodHaveReturnValue cls idx = case ret of
ReturnsVoid -> False;
(Returns IntType) -> True;
+ (Returns (Array _ _)) -> True
(Returns (ObjectType _)) -> True;
- _ -> error "methodHaveReturnValue: todo"
+ _ -> error $ "methodHaveReturnValue: todo: " ++ show ret
where
- (CMethod _ nt) = (constsPool cls) M.! idx
+ nt = case constsPool cls M.! idx of
+ (CMethod _ nt') -> nt'
+ (CIfaceMethod _ nt') -> nt'
+ _ -> error "methodHaveReturnValue: something wrong. abort."
(MethodSignature _ ret) = ntSignature nt