System.Linq.Dynamic.ExpressionParser.ParseElementAccess C# (CSharp) Method

		private Expression ParseElementAccess(Expression expr)
		{
			int errorPos = _token.Position;
			var args = ParseBracketExpression(true);
			if (expr.Type.IsArray)
			{
				if (expr.Type.GetArrayRank() != 1 || args.Length != 1)
					throw ParseError(errorPos, Res.CannotIndexMultiDimArray);
				Expression index = PromoteExpression(args[0], typeof(int), true);
				if (index == null)
					throw ParseError(errorPos, Res.InvalidIndex);
				return Expression.ArrayIndex(expr, index);
			}
			MethodBase mb;
			switch (FindIndexer(expr.Type, args, out mb))
			{
				case 0:
					throw ParseError(errorPos, Res.NoApplicableIndexer(GetTypeName(expr.Type)));
				case 1:
					return Expression.Call(expr, (MethodInfo) mb, args);
				default:
					throw ParseError(errorPos, Res.AmbiguousIndexerInvocation(GetTypeName(expr.Type)));
			}
		}