BEGIN LICENSE BLOCK *****
Version: EPL 2.0/GPL 2.0/LGPL 2.1
The contents of this file are subject to the Eclipse Public
License Version 2.0 (the "License"); you may not use this file
except in compliance with the License. You may obtain a copy of
the License at http://www.eclipse.org/legal/epl-v20.html
Software distributed under the License is distributed on an "AS
IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
implied. See the License for the specific language governing
rights and limitations under the License.
Copyright (C) 2002-2004 Anders Bengtsson 
Copyright (C) 2002-2004 Jan Arne Petersen 
Copyright (C) 2004 Thomas E Enebo 
Copyright (C) 2004 Stefan Matthias Aust 
Alternatively, the contents of this file may be used under the terms of
either of the GNU General Public License Version 2 or later (the "GPL"),
or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
in which case the provisions of the GPL or the LGPL are applicable instead
of those above. If you wish to allow use of your version of this file only
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use your version of this file under the terms of the EPL, indicate your
decision by deleting the provisions above and replace them with the notice
and other provisions required by the GPL or the LGPL. If you do not delete
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END LICENSE BLOCK /***** BEGIN LICENSE BLOCK *****
 * Version: EPL 2.0/GPL 2.0/LGPL 2.1
 *
 * The contents of this file are subject to the Eclipse Public
 * License Version 2.0 (the "License"); you may not use this file
 * except in compliance with the License. You may obtain a copy of
 * the License at http://www.eclipse.org/legal/epl-v20.html
 *
 * Software distributed under the License is distributed on an "AS
 * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
 * implied. See the License for the specific language governing
 * rights and limitations under the License.
 *
 * Copyright (C) 2002-2004 Anders Bengtsson <ndrsbngtssn@yahoo.se>
 * Copyright (C) 2002-2004 Jan Arne Petersen <jpetersen@uni-bonn.de>
 * Copyright (C) 2004 Thomas E Enebo <enebo@acm.org>
 * Copyright (C) 2004 Stefan Matthias Aust <sma@3plus4.de>
 *
 * Alternatively, the contents of this file may be used under the terms of
 * either of the GNU General Public License Version 2 or later (the "GPL"),
 * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
 * in which case the provisions of the GPL or the LGPL are applicable instead
 * of those above. If you wish to allow use of your version of this file only
 * under the terms of either the GPL or the LGPL, and not to allow others to
 * use your version of this file under the terms of the EPL, indicate your
 * decision by deleting the provisions above and replace them with the notice
 * and other provisions required by the GPL or the LGPL. If you do not delete
 * the provisions above, a recipient may use your version of this file under
 * the terms of any one of the EPL, the GPL or the LGPL.
 ***** END LICENSE BLOCK *****/

package org.jruby.javasupport;

import java.lang.reflect.Array;

import org.jruby.Ruby;
import org.jruby.RubyClass;
import org.jruby.RubyFixnum;
import org.jruby.RubyInteger;
import org.jruby.RubyModule;
import org.jruby.anno.JRubyClass;
import org.jruby.java.util.ArrayUtils;
import org.jruby.runtime.ObjectAllocator;
import org.jruby.runtime.builtin.IRubyObject;

@JRubyClass(name="Java::JavaArray", parent="Java::JavaObject")
public class JavaArray extends JavaObject {

    private final JavaUtil.JavaConverter javaConverter;

    public JavaArray(Ruby runtime, Object array) {
        super(runtime, runtime.getJavaSupport().getJavaArrayClass(), array);
        assert array.getClass().isArray();
        javaConverter = JavaUtil.getJavaConverter(array.getClass().getComponentType());
    }

    public static RubyClass createJavaArrayClass(final Ruby runtime, final RubyModule Java) {
        return createJavaArrayClass(runtime, Java, Java.getClass("JavaObject"));
    }

    static RubyClass createJavaArrayClass(final Ruby runtime, RubyModule Java, RubyClass JavaObject) {
        return Java.defineClassUnder("JavaArray", JavaObject, ObjectAllocator.NOT_ALLOCATABLE_ALLOCATOR);
    }

    public Class getComponentType() {
        return getValue().getClass().getComponentType();
    }

    public RubyFixnum length() {
        return getRuntime().newFixnum(getLength());
    }

    public int getLength() {
        return Array.getLength(getValue());
    }

    @Override
    public boolean equals(Object other) {
        return other instanceof JavaArray && this.getValue() == ((JavaArray) other).getValue();
    }

    @Override
    public int hashCode() {
        return 17 * getValue().hashCode();
    }

    public IRubyObject arefDirect(Ruby runtime, int intIndex) {
        return ArrayUtils.arefDirect(runtime, getValue(), javaConverter, intIndex);
    }

    public IRubyObject aset(IRubyObject index, IRubyObject value) {
         if (! (index instanceof RubyInteger)) {
            throw getRuntime().newTypeError(index, getRuntime().getInteger());
        }
        int intIndex = (int) ((RubyInteger) index).getLongValue();
        if (! (value instanceof JavaObject)) {
            throw getRuntime().newTypeError("not a java object:" + value);
        }
        Object javaObject = ((JavaObject) value).getValue();

        ArrayUtils.setWithExceptionHandlingDirect(getRuntime(), javaObject, intIndex, javaObject);

        return value;
    }

    public IRubyObject asetDirect(Ruby runtime, int intIndex, IRubyObject value) {
        return ArrayUtils.asetDirect(runtime, getValue(), javaConverter, intIndex, value);
    }

    public void setWithExceptionHandling(int intIndex, Object javaObject) {
        ArrayUtils.setWithExceptionHandlingDirect(getRuntime(), getValue(), intIndex, javaObject);
    }

    public IRubyObject afill(IRubyObject beginIndex, IRubyObject endIndex, IRubyObject value) {
        if (! (beginIndex instanceof RubyInteger)) {
            throw getRuntime().newTypeError(beginIndex, getRuntime().getInteger());
        }
        int intIndex = (int) ((RubyInteger) beginIndex).getLongValue();
        if (! (endIndex instanceof RubyInteger)) {
            throw getRuntime().newTypeError(endIndex, getRuntime().getInteger());
        }
        int intEndIndex = (int) ((RubyInteger) endIndex).getLongValue();
        if (! (value instanceof JavaObject)) {
            throw getRuntime().newTypeError("not a java object:" + value);
        }
        Object javaValue = ((JavaObject) value).getValue();
        fillWithExceptionHandling(intIndex, intEndIndex, javaValue);
        return value;
    }

    public final void fillWithExceptionHandling(int start, int end, Object javaValue) {
        final Ruby runtime = getRuntime();
        final Object array = getValue();
        for (int i = start; i < end; i++) {
            ArrayUtils.setWithExceptionHandlingDirect(runtime, array, i, javaValue);
        }
    }
}