Chunk.java

package com.nekokittygames.zmachine.blorb.IFF;

import com.sun.javaws.exceptions.InvalidArgumentException;

/**
 * Single chunk in an IFF file, may contain more chunks
 *
 *
 * Created by Katrina Swales on 09/02/2015.
 */
public abstract class Chunk {
    private String identifier;
    private int size;

    /**
     * gets the chunk identifier
     * @return identifying 4 letter string for chunk
     */
    public String getIdentifier() {
        return identifier;
    }


    /**
     * Sets 4 letter chunk ident
     * @param identifier ident to set
     * @throws IllegalArgumentException thrown if ident wished is not 4 characters
     */
    public void setIdentifier(String identifier){
        if(identifier.length()!=4)
            throw new IllegalArgumentException("Identifier must have 4 letters");
        this.identifier = identifier;
    }

    /**
     * Gets the size of the chunk
     * @return size of chunk in bytes
     */
    public int getSize() {
        return size;
    }

    /**
     * Sets the size of the chunk
     * @param size size of chunk in bytes
     */
    public void setSize(int size) {
        this.size = size;
    }

}