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.jvm.aot.nanocoat;

import cc.squirreljme.jvm.aot.nanocoat.common.JvmPrimitiveType;
import cc.squirreljme.runtime.cldc.debug.Debugging;

/**
 * Represents a single variable placement.
 *
 * @see VariablePlacementMap
 * @since 2023/08/09
 */
public class VariablePlacement
{
    /** The type that this is. */
    public final JvmPrimitiveType type;
    
    /** The actual index. */
    public final int index;
    
    /**
     * Sets the variable placement.
     *
     * @param __type The type used.
     * @param __index The index to store at in NanoCoat.
     * @throws IllegalArgumentException If the index is negative.
     * @throws NullPointerException On null arguments.
     * @since 2023/08/09
     */
    public VariablePlacement(JvmPrimitiveType __type, int __index)
        throws IllegalArgumentException, NullPointerException
    {
        if (__index < 0)
            throw new IllegalArgumentException("NEGV");
        if (__type == null)
            throw new NullPointerException("NARG");
        
        this.type = __type;
        this.index = __index;
    }
    
    /**
     * {@inheritDoc}
     * @since 2023/08/13
     */
    @Override
    public boolean equals(Object __o)
    {
        if (this == __o)
            return true;
        if (!(__o instanceof VariablePlacement))
            return false;
        
        VariablePlacement o = (VariablePlacement)__o;
        return this.index == o.index &&
            this.type == o.type;
    }
    
    /**
     * {@inheritDoc}
     * @since 2023/08/13
     */
    @Override
    public int hashCode()
    {
        return this.type.hashCode() ^ this.index;
    }
    
    /**
     * {@inheritDoc}
     * @since 2023/08/13
     */
    @Override
    public String toString()
    {
        return String.format("%s:#%d", this.type, this.index);
    }
}