System.Bindings.EvalProtocol.ICompiledBinding.Evaluate
Delphi
function Evaluate(ARoot: IScope; ASubscriptionCallback: TSubscriptionNotification; {out} Subscriptions: TList<ISubscription>): IValue; overload;
function Evaluate(ARoot: IScope; ASubscriptionCallback: TSubscriptionNotification; {out} Subscriptions: TList<ISubscription>; var APreparedWrapper: IPreparedWrappers): IValue; overload;
C++
virtual _di_IValue __fastcall Evaluate(_di_IScope ARoot, _di_TSubscriptionNotification ASubscriptionCallback, System::Generics::Collections::TList__1<_di_ISubscription>* Subscriptions) = 0 /* overload */;
virtual _di_IValue __fastcall Evaluate(_di_IScope ARoot, _di_TSubscriptionNotification ASubscriptionCallback, System::Generics::Collections::TList__1<_di_ISubscription>* Subscriptions, _di_IPreparedWrappers &APreparedWrapper) = 0 /* overload */;
Properties
| Type | Visibility | Source | Unit | Parent |
|---|---|---|---|---|
| function | public | System.Bindings.EvalProtocol.pas System.Bindings.EvalProtocol.hpp |
System.Bindings.EvalProtocol | ICompiledBinding |
Description
Evaluates the compiled expression represented by this interface.
The Evaluate method evaluates the compiled expression represented by this interface. Call the Evaluate method with the following parameters:
| Parameter | Meaning |
ARoot
|
The evaluator searches this scope for built-in operators and other global symbols that can be used in the expression. |
ASubscriptionCallback
|
Any path along the expression that is subscribable will be subscribed to using this callback if it is not nil. |
Subscriptions
|
A list of subscriptions that this procedure will add to each time it subscribes. If it is nil, then nothing will be subscribed to. |
Evaluate returns a wrapper containing the result value of the expression.