/*

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.  Oracle designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Oracle in the LICENSE file that accompanied this code.

 *

 * This code 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 General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

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package com.apple.jobjc;

public class MacOSXFramework {

    private static native long retainFramework(final String frameworkName);

    private static native void releaseFramework(final long frameworkPtr);

    private static native void getConstant(final long frameworkPtr, String symbol, final long bufferPtr, final int size);

    private final JObjCRuntime runtime;

    protected final long[] nativeLibPtrs;

    final long getFrameworkPtr() { return nativeLibPtrs.length > 0 ? nativeLibPtrs[0] : 0; }

    private static long[] createFrameworkPtrsFromPaths(final String[] frameworkLibPaths) {

        final long[] libPtrs = new long[frameworkLibPaths.length];

        for(int i = 0; i < libPtrs.length; i++){

            libPtrs[i] = retainFramework(frameworkLibPaths[i]);

            if(libPtrs[i] == 0) throw new RuntimeException("Could not open library at " + frameworkLibPaths[i]);

        }

        return libPtrs;

    }

    protected MacOSXFramework(final JObjCRuntime runtime, final String[] nativeLibPaths) {

        runtime.assertOK();

        this.runtime = runtime;

        this.nativeLibPtrs = createFrameworkPtrsFromPaths(nativeLibPaths);

    }

    @Override protected final synchronized void finalize() throws Throwable {

        for(long lib : nativeLibPtrs)

            if(lib != 0) releaseFramework(lib);

    }

    protected final JObjCRuntime getRuntime(){ return runtime; }

    protected void getConstant(final String symbol, final long retValPtr, final int size){

        assert size >= 0;

        assert retValPtr != 0;

        getConstant(getFrameworkPtr(), symbol, retValPtr, size);

    }

    protected void getConstant(final String symbol, final NativeArgumentBuffer out, final int size){

        getConstant(symbol, out.retValPtr, size);

    }

    protected void getConstant(final String symbol, final Struct out, final int size){

        getConstant(symbol, out.raw.bufferPtr, size);

    }

}