SquirrelJME/SquirrelJME

// -*- Mode: Java; indent-tabs-mode: t; tab-width: 4 -*-
// ---------------------------------------------------------------------------
// Multi-Phasic Applications: 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 cc.squirreljme.debugger;

import cc.squirreljme.runtime.cldc.debug.Debugging;
import net.multiphasicapps.classfile.Instruction;
import net.multiphasicapps.classfile.InstructionMnemonics;

/**
 * A standard instruction viewer using SquirrelJME's {@link Instruction}.
 *
 * @since 2024/01/21
 */
public class JavaInstructionViewer
    implements InstructionViewer
{
    /** The instruction this wraps. */
    protected final Instruction instruction;
    
    /**
     * Initializes the viewer.
     *
     * @param __instruction The instruction to view.
     * @throws NullPointerException On null arguments.
     * @since 2024/01/21
     */
    public JavaInstructionViewer(Instruction __instruction)
        throws NullPointerException
    {
        if (__instruction == null)
            throw new NullPointerException("NARG");
        
        this.instruction = __instruction;
    }
    
    /**
     * {@inheritDoc}
     * @since 2024/01/21
     */
    @Override
    public int address()
    {
        return this.instruction.address();
    }
    
    /**
     * {@inheritDoc}
     * @since 2024/01/26
     */
    @Override
    public Object[] arguments()
    {
        return this.instruction.arguments();
    }
    
    /**
     * {@inheritDoc}
     * @since 2024/01/23
     */
    @Override
    public int length()
    {
        return this.instruction.length();
    }
    
    /**
     * {@inheritDoc}
     * @since 2024/01/21
     */
    @Override
    public String mnemonic()
    {
        return this.instruction.mnemonic();
    }
    
    /**
     * {@inheritDoc}
     * @since 2024/01/23
     */
    @Override
    public int mnemonicId()
    {
        return this.instruction.operation();
    }
}