/*
* Copyright (c) 2011, 2013, Oracle and/or its affiliates. All rights reserved.
* 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;
/**
* A struct is malloced on the C heap and accessed in Java through a ByteBuffer.
*/
public abstract class Struct{
protected final NativeBuffer raw;
private final JObjCRuntime runtime;
protected final JObjCRuntime getRuntime(){ return runtime; }
/**
* Create a brand new struct from nothing.
*/
protected Struct(final JObjCRuntime runtime, final int SIZEOF){
this(runtime, new NativeBuffer(SIZEOF), SIZEOF);
}
/**
* Create a struct by taking ownership of an existing buffer.
* Used for struct fields of type struct. For example, the origin and size fields
* in NSRect would be initialized with this constructor.
*/
protected Struct(final JObjCRuntime runtime, final NativeBuffer buffer, final int SIZEOF){
if(runtime == null) throw new NullPointerException("runtime");
this.runtime = runtime;
this.raw = buffer;
this.raw.limit(SIZEOF);
}
abstract public Coder getCoder();
}