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.classfile;

/**
 * This represents a string constant value.
 *
 * @since 2018/05/21
 */
public class ConstantValueString
    extends ConstantValue
    implements CharSequence
{
    /** The used string. */
    protected final String value;
    
    /**
     * Initializes the value.
     *
     * @param __s The value to use.
     * @throws NullPointerException On null arguments.
     * @since 2018/05/21
     */
    public ConstantValueString(String __s)
        throws NullPointerException
    {
        super(__s, ConstantValueType.STRING);
        
        if (__s == null)
            throw new NullPointerException("NARG");
        
        this.value = __s;
    }
    
    /**
     * {@inheritDoc}
     * @since 2018/05/21
     */
    @Override
    public final char charAt(int __i)
    {
        return this.value.charAt(__i);
    }
    
    /**
     * {@inheritDoc}
     * @since 2018/05/21
     */
    @Override
    public final int length()
    {
        return this.value.length();
    }
    
    /**
     * {@inheritDoc}
     * @since 2018/05/21
     */
    @Override
    public final CharSequence subSequence(int __s, int __e)
    {
        // So the same class type is returned
        return new ConstantValueString(this.value.substring(__s, __e));
    }
}