{--
JVM-Bridge -- bridge from FP languages and others to the Java VM
Copyright (C) 2001 Ashley Yakeley <ashley@semantic.org>

This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.

This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
--}

module Main where
	{
	import TestStuff;
	import JVMBridge;

	type JVM = JVMUser ();

	data JHaskellClass;
	instance IsJavaClassMarker JHaskellClass where
		{
		cName Type = toJavaString "org/mypackage/Haskell";
		};
	type JHaskell = ObjectRef JHaskellClass;
	instance IsJObject JHaskell where
		{
		toJObject (MkJVMRef r) = (MkJVMRef r);
		};
	
	fooMethodName = toJavaString "foo";

	fooMethod :: JHaskell -> (Jint) -> JVM Jvoid;
	fooMethod _ i = do
		{
		callIO (putStrLn (show i));
		};

	getShowClass :: JVM (JObject -> JVM ());
	getShowClass = do
		{
		objClass	<- getObjectClass;
		getClass	<- getgetClassMethod objClass;
		toString	<- gettoStringMethod objClass;
		stringClass	<- getStringClass;
		toCharArray	<- gettoCharArrayMethod stringClass;
		return (\obj -> do
			{
			cls <- getClass obj ();
			s <- toString (toJObject cls) ();
			text <- toCharArray s ();
			callIO (putStrLn ("class is " ++ (showJavaString text)));
			});
		};

	main :: IO ();
	main = testRunJVM (do
		{
		efClass	<- findClassByName (toJavaString "org/semantic/jvmbridge/ExecuteFunction");
		efNull	<- getIsNothing efClass;
		callIO (putStrLn ("ExecuteFunction " ++ (if efNull then "not found" else "found")));
		
		classClass		<- getClassClass;
		getClassLoader	<- getgetClassLoaderMethod classClass;
		
		(MkJVMRef loader)	<- getClassLoader efClass ();
		
		hClass <- tlDefineCallbackClass loader (className (Type :: Type JHaskell)) (toJavaString "java/lang/Object")
			[]
			[MkMemberNameType
				fooMethodName
				(MkFunctionType
					[MkIntType]
					MkVoidType
				)
			]
			;
		
		fooMethodVal	<- makeCallback fooMethod;

		(haskell :: JHaskell) <- debugIOLM "new Haskell" (newObject hClass (fooMethodVal));
		foo				<- getMethod hClass fooMethodName (Type :: Type (Jint)) (Type :: Type Jvoid);
		
		systemClass		<- getSystemClass;
		currentTimeMillis <- getcurrentTimeMillisMethod systemClass;		
		threadClass		<- getThreadClass;
		javaYield		<- getyieldMethod threadClass;		
		callIO (putStrLn ("Yielding to other JVM threads for 1s..."));
		withProcsThread (do
			{
			startTime <- currentTimeMillis ();
			tlYieldLoop javaYield (do
				{
				curTime <- currentTimeMillis ();
				foo haskell (fromIntegral curTime);
				return (curTime < startTime + 1000);	-- 1s
				});
			return ();
			});
		return ();
		});
	}