public void GetProperty_will_throw_on_invalid_property_name(IPropertyProvider pp)
{
Assert.Throws <ArgumentException>(() => pp.GetProperty(""));
Assert.Throws <ArgumentException>(() => pp.GetProperty(null));
Assert.Throws <ArgumentException>(() => pp.TryGetProperty("", typeof(object), out _));
Assert.Throws <ArgumentException>(() => pp.TryGetProperty(null, typeof(object), out _));
}
public override bool TryGetMember(GetMemberBinder binder, out object result)
{
if (binder == null)
{
throw new ArgumentNullException("binder");
}
if (_selfValues.TryGetProperty(binder.Name, typeof(object), out result))
{
return(true);
}
bool flag = this.Data.TryGetValue(binder.Name, out result);
if (!flag && this.Parent != null)
{
return(this.Parent.TryGetMember(binder, out result));
}
if (!flag)
{
result = "undefined";
}
// TODO Friendly error message (currently, "TemplateContext doesn't contain a defintion")
return(true);
}
internal static Type InferPropertyType(IPropertyProvider self, string property)
{
if (self.TryGetProperty(property, typeof(object), out object value))
{
return(value == null ? typeof(object) : value.GetType());
}
return(null);
}
public bool TryGetProperty(string property, Type propertyType, out object value)
{
if (FilteredOut(property))
{
value = null;
return(false);
}
return(_propertyProvider.TryGetProperty(property, propertyType, out value));
}
public static bool HasProperty(this IPropertyProvider source,
string property)
{
if (source == null)
{
throw new ArgumentNullException("source");
}
object dummy;
return(source.TryGetProperty(property, out dummy));
}
public static T GetProperty <T>(this IPropertyProvider source, string property, T defaultValue)
{
if (source == null)
{
throw new ArgumentNullException("source");
}
object result;
if (source.TryGetProperty(property, typeof(T), out result))
{
return((T)result);
}
else
{
return(defaultValue);
}
}
public static bool TryGetProperty <T>(this IPropertyProvider source, string property, out T value)
{
if (source == null)
{
throw new ArgumentNullException("source");
}
object objValue;
bool result = source.TryGetProperty(property, typeof(T), out objValue);
if (result && objValue is T)
{
value = (T)objValue;
return(true);
}
else
{
value = default(T);
return(false);
}
}
