package no.uio.ifi.refaktor.utils;

import org.eclipse.jdt.core.ICompilationUnit;
import org.eclipse.jdt.core.dom.CompilationUnit;

public class CompilationUnitRecentlyUsedCache implements CompilationUnitCache {

	private ICompilationUnit unit;
	private CompilationUnit concreteCompilationUnit;

	@Override
	public boolean contains(ICompilationUnit unit) {
		return this.unit != null && this.unit.equals(unit);
	}

	@Override
	public CompilationUnit get(ICompilationUnit unit) {
		return this.unit.equals(unit) ? concreteCompilationUnit : null;
	}

	@Override
	public void add(ICompilationUnit unit, CompilationUnit concreteCompilationUnit) {
		this.unit = unit;
		this.concreteCompilationUnit = concreteCompilationUnit;
	}

}