package org.rascalmpl.interpreter.cursors; import org.rascalmpl.interpreter.utils.RuntimeExceptionFactory; import org.rascalmpl.value.IList; import org.rascalmpl.value.IValue; import org.rascalmpl.value.IValueFactory; public abstract class Context { public abstract IValue up(IValue focus); public IList toPath(IValueFactory vf) { throw RuntimeExceptionFactory.illegalArgument(null, null); } }