package org.nullbool.editor.util;

import java.util.concurrent.atomic.AtomicReference;

/**
 * @author Bibl (don't ban me pls)
 * @created 27 Aug 2015 23:47:25
 */
public class PrefixedStringBuilder extends PrinterStringBuilder {

	private final AtomicReference<String> prefix;

	public PrefixedStringBuilder() {
		this("");
	}

	public PrefixedStringBuilder(String prefix) {
		this.prefix = new AtomicReference<String>(prefix);
	}

	public void setPrefix(String prefix) {
		synchronized (this.prefix) {
			if(prefix != null) {
				this.prefix.set(prefix);
			}
		}
	}

	public String getPrefix() {
		synchronized (prefix) {
			return prefix.get();
		}
	}

	@Override
	public PrinterStringBuilder ln() {
		PrinterStringBuilder ret = super.ln();
		synchronized (this.prefix) {
			String prefix = this.prefix.get();
			if(prefix != null) {
				append(prefix);
			}
		}
		return ret;
	}
}