private Expression CreateIndexerAccessExpression(Expression instance, IndexerToken indexerToken)
{
CallSiteBinder binder = Binder.GetIndex(CSharpBinderFlags.None,
typeof(DynamicPropertyAccessExpressionBuilder),
new[]
{
CSharpArgumentInfo.Create(CSharpArgumentInfoFlags.None, null),
CSharpArgumentInfo.Create(
CSharpArgumentInfoFlags.Constant |
CSharpArgumentInfoFlags.UseCompileTimeType, null)
});
return Expression.Dynamic(binder, typeof(object), new[] { instance, indexerToken.Arguments.Select(Expression.Constant).First() });
}
private static bool TryParseIndexerToken(string member, out IndexerToken token)
{
token = null;
if (!IsValidIndexer(member))
{
return false;
}
List<object> arguments = new List<object>();
arguments.AddRange(ExtractIndexerArguments(member).Select(a => ConvertIndexerArgument(a)));
token = new IndexerToken(arguments);
return true;
}
private static MemberInfo GetMemberInfoFromIndexerToken(IndexerToken token, Type targetType)
{
PropertyInfo indexerPropertyInfo = targetType.GetIndexerPropertyInfo(token.Arguments.Select(a => a.GetType()).ToArray());
if (indexerPropertyInfo != null)
{
return indexerPropertyInfo.GetGetMethod();
}
return null;
}