public void HasValue()
{
BindingEnvironment environment = new BindingEnvironment();
environment.SetValue("foo", "bar");
Assert.IsTrue(environment.HasValue("foo"));
Assert.IsFalse(environment.HasValue("undefined"));
}
public void HasValue()
{
BindingEnvironment environment = new BindingEnvironment();
environment.SetValue("foo", "bar");
Assert.IsTrue(environment.HasValue("foo"));
Assert.IsFalse(environment.HasValue("undefined"));
}
public object Evaluate(BindingEnvironment environment)
{
object value = environment.GetValue(this.name);
if (value != null)
{
return(value);
}
if (environment.HasValue(this.name))
{
return(value);
}
throw new InvalidOperationException(string.Format("NameError: name '{0}' not defined", this.name));
}