SquirrelJME/SquirrelJME

// -*- Mode: Java; indent-tabs-mode: t; tab-width: 4 -*-
// ---------------------------------------------------------------------------
// SquirrelJME
//     Copyright (C) Stephanie Gawroriski <xer@multiphasicapps.net>
// ---------------------------------------------------------------------------
// SquirrelJME is under the Mozilla Public License Version 2.0.
// See license.mkd for licensing and copyright information.
// ---------------------------------------------------------------------------

package net.multiphasicapps.io;

import cc.squirreljme.runtime.cldc.debug.Debugging;

/**
 * This provides random access to data in the given byte array.
 *
 * @since 2016/08/11
 */
public class ByteArrayData
    implements RandomAccessData
{
    /** The starting offset. */
    protected final int offset;
    
    /** The number of bytes to access. */
    protected final int length;
    
    /** The endianess of the data to read. */
    protected final DataEndianess endianess;
    
    /** The backing array. */
    final byte[] _array;
    
    /**
     * This wraps the given set of bytes.
     *
     * @param __end The endianess of the data.
     * @param __b The bytes to wrap.
     * @throws NullPointerException On null arguments.
     * @since 2016/08/11
     */
    public ByteArrayData(DataEndianess __end, byte... __b)
        throws NullPointerException
    {
        this(__end, __b, 0, __b.length);
    }    
    
    /**
     * This wraps the given set of bytes.
     *
     * @param __end The endianess of the data.
     * @param __b The bytes to wrap.
     * @param __o The starting offset.
     * @param __l The length of bytes to wrap.
     * @throws IndexOutOfBoundsException If the offset and/or length are
     * negative or exceed the array size.
     * @throws NullPointerException On null arguments
     * @since 2016/08/11
     */
    public ByteArrayData(DataEndianess __end, byte[] __b, int __o, int __l)
        throws IndexOutOfBoundsException, NullPointerException
    {
        // Check
        if (__end == null || __b == null)
            throw new NullPointerException("NARG");
        int n = __b.length;
        if (__o < 0 || __l < 0 || (__o + __l) > n)
            throw new IndexOutOfBoundsException("AIOB");
        
        // Set
        this.endianess = __end;
        this._array = __b;
        this.offset = __o;
        this.length = __l;
    }
    
    /**
     * {@inheritDoc}
     * @since 2016/08/11
     */
    @Override
    public DataEndianess getEndianess()
    {
        return this.endianess;
    }
    
    /**
     * {@inheritDoc}
     * @since 2016/08/11
     */
    @Override
    public void read(int __p, byte[] __b, int __o, int __l)
        throws IndexOutOfBoundsException
    {
        throw Debugging.todo();
    }
    
    /**
     * {@inheritDoc}
     * @since 2016/08/11
     */
    @Override
    public int readByte(int __p)
        throws IndexOutOfBoundsException
    {
        throw Debugging.todo();
    }
    
    /**
     * {@inheritDoc}
     * @since 2016/08/11
     */
    @Override
    public double readDouble(int __p)
        throws IndexOutOfBoundsException
    {
        throw Debugging.todo();
    }
    
    /**
     * {@inheritDoc}
     * @since 2016/08/11
     */
    @Override
    public double readFloat(int __p)
        throws IndexOutOfBoundsException
    {
        throw Debugging.todo();
    }
    
    /**
     * {@inheritDoc}
     * @since 2016/08/11
     */
    @Override
    public int readInt(int __p)
        throws IndexOutOfBoundsException
    {
        throw Debugging.todo();
    }
    
    /**
     * {@inheritDoc}
     * @since 2016/08/11
     */
    @Override
    public long readLong(int __p)
        throws IndexOutOfBoundsException
    {
        throw Debugging.todo();
    }
    
    /**
     * {@inheritDoc}
     * @since 2016/08/11
     */
    @Override
    public int readShort(int __p)
        throws IndexOutOfBoundsException
    {
        throw Debugging.todo();
    }
    
    /**
     * {@inheritDoc}
     * @since 2016/08/11
     */
    @Override
    public int readUnsignedByte(int __p)
        throws IndexOutOfBoundsException
    {
        throw Debugging.todo();
    }
    
    /**
     * {@inheritDoc}
     * @since 2016/08/11
     */
    @Override
    public int readUnsignedShort(int __p)
        throws IndexOutOfBoundsException
    {
        throw Debugging.todo();
    }
}