/// <summary> /// Performs the binding of the dynamic get index operation. /// </summary> /// <param name="binder"> /// An instance of the <see cref="T:System.Dynamic.GetIndexBinder" /> that represents the details of the dynamic operation. /// </param> /// <param name="indexes"> /// An array of <see cref="T:System.Dynamic.DynamicMetaObject" /> instances - indexes for the get index operation. /// </param> /// <returns> /// The new <see cref="T:System.Dynamic.DynamicMetaObject" /> representing the result of the binding. /// </returns> public override DynamicMetaObject BindGetIndex(GetIndexBinder binder, DynamicMetaObject[] indexes) { Expression[] parameters = { Expression.Constant(indexes.First(ix => ix.LimitType == typeof(string)).Value) }; var callMethod = CallMethod(GetValueMethod, parameters); return callMethod; }
/// <summary> /// Performs the binding of the dynamic set index operation. /// </summary> /// <param name="binder"> /// An instance of the <see cref="T:System.Dynamic.SetIndexBinder" /> that represents the details of the dynamic operation. /// </param> /// <param name="indexes"> /// An array of <see cref="T:System.Dynamic.DynamicMetaObject" /> instances - indexes for the set index operation. /// </param> /// <param name="value">The <see cref="T:System.Dynamic.DynamicMetaObject" /> /// representing the value for the set index operation. /// </param> /// <returns> /// The new <see cref="T:System.Dynamic.DynamicMetaObject" /> representing the result of the binding. /// </returns> public override DynamicMetaObject BindSetIndex(SetIndexBinder binder, DynamicMetaObject[] indexes, DynamicMetaObject value) { Expression[] parameters = { Expression.Constant(indexes.First().Value) }; var callMethod = CallMethod(SetValueMethod, parameters); return callMethod; }
public override DynamicMetaObject BindInvokeMember( InvokeMemberBinder binder, DynamicMetaObject[] args) { if (FunctionMapping.ContainsFunction(binder.Name, args.Count())) { var expression = Expression.New(CtorWithExpressionAndExpressionFunction, new[] { Expression.Constant(this.Value), Expression.Constant(new ExpressionFunction(binder.Name, args.Select(x => x.Value))) }); return new DynamicMetaObject( expression, BindingRestrictions.GetTypeRestriction(Expression, LimitType)); } else if (string.Equals(binder.Name, ODataLiteral.Any, StringComparison.OrdinalIgnoreCase) || string.Equals(binder.Name, ODataLiteral.All, StringComparison.OrdinalIgnoreCase)) { var expression = Expression.New(CtorWithExpressionAndExpressionFunction, new[] { Expression.Constant(this.Value), Expression.Constant(new ExpressionFunction(binder.Name, args.Select(x => x.Value))) }); return new DynamicMetaObject( expression, BindingRestrictions.GetTypeRestriction(Expression, LimitType)); } else if (string.Equals(binder.Name, ODataLiteral.IsOf, StringComparison.OrdinalIgnoreCase) || string.Equals(binder.Name, ODataLiteral.Is, StringComparison.OrdinalIgnoreCase) || string.Equals(binder.Name, ODataLiteral.Cast, StringComparison.OrdinalIgnoreCase) || string.Equals(binder.Name, ODataLiteral.As, StringComparison.OrdinalIgnoreCase)) { var functionName = string.Equals(binder.Name, ODataLiteral.Is, StringComparison.OrdinalIgnoreCase) ? ODataLiteral.IsOf : string.Equals(binder.Name, ODataLiteral.As, StringComparison.OrdinalIgnoreCase) ? ODataLiteral.Cast : binder.Name; var expression = Expression.New(CtorWithExpressionAndExpressionFunction, new[] { Expression.Constant(this.Value), Expression.Constant(new ExpressionFunction( functionName, new [] { (this.Value as ODataExpression).IsNull ? null : this.Value, args.First().Value })) }); return new DynamicMetaObject( expression, BindingRestrictions.GetTypeRestriction(Expression, LimitType)); } else { return base.BindInvokeMember(binder, args); } }