private static object GetPropertyOrFieldValue(object container, string name)
{
Precondition.Require(container, () => Error.ArgumentNull("container"));
Precondition.Defined(name, () => Error.BindingExpressionCannotBeEmpty("name"));
Type type = container.GetType();
PropertyInfo pi = type.GetProperty(name,
BindingFlags.Instance | BindingFlags.Public |
BindingFlags.NonPublic | BindingFlags.FlattenHierarchy);
if (pi != null)
{
return(pi.CreateAccessor().GetValue(container));
}
FieldInfo fi = type.GetField(name,
BindingFlags.Instance | BindingFlags.Public |
BindingFlags.NonPublic | BindingFlags.FlattenHierarchy);
if (fi != null)
{
return(fi.CreateAccessor().GetValue(container));
}
throw Error.MissingMember(container.GetType(), name);
}
public PrefixWrapper(IValueSet collection, string prefix, bool ignoreCase)
{
Precondition.Require(collection, () => Error.ArgumentNull("collection"));
Precondition.Defined(prefix, () => Error.ArgumentNull("prefix"));
_collection = collection;
_prefix = prefix;
_comparison = (ignoreCase)
? StringComparison.OrdinalIgnoreCase
: StringComparison.Ordinal;
}
private static object GetIndexedPropertyValue(object container, string expr)
{
Precondition.Require(container, () => Error.ArgumentNull("container"));
Precondition.Defined(expr, () => Error.BindingExpressionCannotBeEmpty("expr"));
int start = expr.IndexOfAny(_indexExprStartChars);
int end = expr.IndexOfAny(_indexExprEndChars, start + 1);
if (start < 0 || end < 0 || end > start)
{
throw Error.InvalidBindingExpressionFormat("expr");
}
string indexPart = expr.Substring(start + 1, end - start - 1).Trim();
string propertyPart = null;
object indexValue = null;
bool isIntIndex = false;
object instance;
if (start != 0)
{
propertyPart = expr.Substring(0, start);
}
if (indexPart.Length != 0)
{
if (indexPart[0] == '\"' && indexPart[indexPart.Length - 1] == '\"' ||
indexPart[0] == '\'' && indexPart[indexPart.Length - 1] == '\'')
{
indexValue = indexPart.Substring(1, indexPart.Length - 2);
}
else if (!char.IsDigit(indexPart[0]))
{
indexValue = indexPart;
}
else
{
int index;
if (isIntIndex = int.TryParse(indexPart, NumberStyles.Integer,
CultureInfo.InvariantCulture, out index))
{
indexValue = index;
}
else
{
indexValue = indexPart;
}
}
}
if (indexValue == null)
{
throw Error.InvalidIndexerExpressionFormat("expr");
}
if (!String.IsNullOrEmpty(propertyPart))
{
instance = GetPropertyOrFieldValue(container, propertyPart);
}
else
{
instance = container;
}
if (instance == null)
{
return(indexValue);
}
Array array = (instance as Array);
if (array != null && isIntIndex)
{
return(array.GetValue((int)indexValue));
}
if (instance is IList && isIntIndex)
{
return(((IList)instance)[(int)indexValue]);
}
PropertyInfo pi = instance.GetType().GetProperty("Item",
BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic,
null, null, new Type[] { indexValue.GetType() }, null);
if (pi != null)
{
return(pi.GetValue(instance, new object[] { indexValue }));
}
throw Error.IndexerNotFound(instance.GetType(), "expr");
}
