+{-# LANGUAGE CPP #-}
+{-# LANGUAGE OverloadedStrings #-}
module Mate.Utilities where
+import Data.Word
+import qualified Data.Map as M
+import qualified Data.Set as S
import qualified Data.ByteString.Lazy as B
+import Data.List
+import Data.Maybe
import JVM.ClassFile
+import Mate.Types
+import Mate.NativeSizes
--- 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)
+#ifdef DEBUG
+import Text.Printf
+#endif
+
+buildMethodID :: Class Direct -> Word16 -> MethodInfo
+buildMethodID cls idx = MethodInfo (ntName nt) rc (ntSignature nt)
where
- look [] = Nothing
- look (f:fs)
- | methodName f == name = Just f
- | otherwise = look fs
+ (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 Direct -> Word16 -> StaticFieldInfo
+buildStaticFieldID cls idx = StaticFieldInfo rc (ntName fnt)
+ where (CField rc fnt) = constsPool cls M.! idx
+
+buildFieldOffset :: Class Direct -> Word16 -> (B.ByteString, B.ByteString)
+buildFieldOffset cls idx = (rc, ntName fnt)
+ where (CField rc fnt) = constsPool cls M.! idx
+
+buildClassID :: Class Direct -> Word16 -> B.ByteString
+buildClassID cls idx = cl
+ where (CClass cl) = constsPool cls M.! idx
+
+
+methodNameTypeByIdx :: Class Direct -> Word16 -> NameType (Method Direct)
+methodNameTypeByIdx cls idx = case constsPool cls M.! idx of
+ (CMethod _ nt') -> nt'
+ (CIfaceMethod _ nt') -> nt'
+ _ -> error "methodGetArgsCount: something wrong. abort."
+
+methodGetArgsCount :: NameType (Method Direct) -> NativeWord
+methodGetArgsCount nt = genericLength args
+ where (MethodSignature args _) = ntSignature nt
+
+-- TODO(bernhard): Extend it to more than just int, and provide typeinformation
+methodHaveReturnValue :: Class Direct -> Word16 -> Bool
+methodHaveReturnValue cls idx = case ret of
+ ReturnsVoid -> False;
+ (Returns BoolType) -> True
+ (Returns CharByte) -> True
+ (Returns IntType) -> True;
+ (Returns (Array _ _)) -> True
+ (Returns (ObjectType _)) -> True;
+ _ -> error $ "methodHaveReturnValue: todo: " ++ show ret
+ where
+ nt = case constsPool cls M.! idx of
+ (CMethod _ nt') -> nt'
+ (CIfaceMethod _ nt') -> nt'
+ _ -> error "methodHaveReturnValue: something wrong. abort."
+ (MethodSignature _ ret) = ntSignature nt
+
+methodInfoToMethod :: MethodInfo -> Class Direct -> Method Direct
+methodInfoToMethod mi cls =
+ fromJust $ lookupMethodSig (methName mi) (methSignature mi) cls
+
+methodIsStatic :: Method Direct -> Bool
+methodIsStatic = S.member ACC_STATIC . methodAccessFlags
+
+lookupMethodSig :: B.ByteString -> MethodSignature -> Class Direct -> Maybe (Method Direct)
+lookupMethodSig name sig cls =
+ find (\x -> methodName x == name && methodSignature x == sig) $ classMethods cls
+
+hexDumpMap :: Integral v => String -> M.Map B.ByteString v -> IO ()
+#ifdef DEBUG
+hexDumpMap header mmap = do
+ let printValue :: B.ByteString -> IO ()
+ printValue key = printf "\t%-70s: 0x%08x\n" (toString key) val
+ where val = fromIntegral (mmap M.! key) :: NativeWord
+ printf "%s\n" header
+ mapM_ printValue (M.keys mmap)
+#else
+hexDumpMap _ _ = return ()
+#endif