/// <summary>
/// Invoke a public method accessible from outside of the interpreter (EXTERN FUNCTION).
/// </summary>
/// <param name="executionFlowId">A GUID that defines in which callstack is linked.</param>
/// <param name="methodName">The name of the method.</param>
/// <param name="awaitIfAsync">Await if the method is maked as asynchronous.</param>
/// <param name="args">The arguments to pass to the method.</param>
/// <returns>Returns the result of the invocation (a <see cref="Task"/> in the case of a not awaited asynchronous method, or the value returned by the method).</returns>
internal object InvokeMethod(Guid executionFlowId, string methodName, bool awaitIfAsync, Code.AbstractSyntaxTree.Expression[] args)
{
InitializeGlobalState();
BaZicInterpreter.CheckState(BaZicInterpreterState.Idle, BaZicInterpreterState.Stopped, BaZicInterpreterState.StoppedWithError);
var invokeExpression = new InvokeMethodExpression(methodName, awaitIfAsync).WithParameters(args);
BaZicInterpreter.ChangeState(this, new BaZicInterpreterStateChangeEventArgs(BaZicInterpreterState.Running));
return(new InvokeMethodInterpreter(BaZicInterpreter, this, invokeExpression, executionFlowId, true).Run());
}
internal void Start(object[] args)
{
BaZicInterpreter.CheckState(BaZicInterpreterState.Preparing);
InitializeGlobalState();
var entryPoint = GetEntryPointMethod();
if (IsAborted)
{
return;
}
if (BaZicInterpreter.Verbose)
{
VerboseLog(L.BaZic.Runtime.Interpreters.ProgramInterpreter.EntryPointDetected);
}
BaZicInterpreter.ChangeState(this, new BaZicInterpreterStateChangeEventArgs(BaZicInterpreterState.Running));
var argsExpressions = new List <Code.AbstractSyntaxTree.Expression>();
if (args != null)
{
foreach (var argument in args)
{
argsExpressions.Add(new PrimitiveExpression(argument));
}
}
var entryPointInvocation = new InvokeMethodExpression(Consts.EntryPointMethodName, false).WithParameters(new ArrayCreationExpression().WithValues(argsExpressions.ToArray()));
var entryPointInterpreter = new MethodInterpreter(BaZicInterpreter, this, entryPoint, entryPointInvocation, ExecutionFlowId);
ProgramResult = entryPointInterpreter.Invoke();
if (IsAborted)
{
return;
}
if (_uiProgram != null && ProgramResult == null)
{
Exception eventException = null;
ThreadHelper.RunOnStaThread(() =>
{
if (BaZicInterpreter.Verbose)
{
VerboseLog(L.BaZic.Runtime.Interpreters.ProgramInterpreter.LoadingUi);
}
_uiThread = Thread.CurrentThread;
LoadUserInterface();
if (UserInterface == null)
{
BaZicInterpreter.ChangeState(this, new UiException(L.BaZic.Parser.XamlUnknownParsingError));
return;
}
UIDispatcher = UserInterface.Dispatcher;
if (BaZicInterpreter.Verbose)
{
VerboseLog(L.BaZic.Runtime.Interpreters.ProgramInterpreter.DeclaringEvents);
}
foreach (var uiEvent in _uiProgram.UiEvents)
{
var targetObject = UserInterface.FindName(uiEvent.ControlName);
if (targetObject == null)
{
BaZicInterpreter.ChangeState(this, new UiException($"Unable to find the control named '{uiEvent.ControlName}'."));
return;
}
var action = new Action(() =>
{
if (BaZicInterpreter.Verbose)
{
VerboseLog(L.BaZic.Runtime.Interpreters.ProgramInterpreter.EventRaised);
}
BaZicInterpreter.ChangeState(this, new BaZicInterpreterStateChangeEventArgs(BaZicInterpreterState.Running));
var eventMethodDeclaration = _uiProgram.Methods.Single(m => m.Id == uiEvent.MethodId);
var eventInvocation = new InvokeMethodExpression(eventMethodDeclaration.Name.Identifier, false);
var eventMethodInterpreter = new MethodInterpreter(BaZicInterpreter, this, eventMethodDeclaration, eventInvocation, ExecutionFlowId);
if (targetObject is Window && uiEvent.ControlEventName == nameof(Window.Closed))
{
ProgramResult = eventMethodInterpreter.Invoke();
}
else
{
eventMethodInterpreter.Invoke();
}
BaZicInterpreter.RunningStateManager.SetIsRunningMainFunction(false); // In all cases, at this point, the main function is done. The UI is running. Idle state must be able to be setted.
BaZicInterpreter.RunningStateManager.UpdateState();
});
BaZicInterpreter.Reflection.SubscribeEvent(targetObject, uiEvent.ControlEventName, action);
}
if (BaZicInterpreter.Verbose)
{
VerboseLog(L.BaZic.Runtime.Interpreters.ProgramInterpreter.DeclaringBindings);
}
foreach (var controlAccessor in _uiProgram.UiControlAccessors)
{
AddVariable(controlAccessor);
}
if (BaZicInterpreter.Verbose)
{
VerboseLog(L.BaZic.Runtime.Interpreters.ProgramInterpreter.ShowUi);
}
var window = UserInterface as Window;
try
{
if (window != null)
{
window.Closed += (sender, e) =>
{
if (BaZicInterpreter.Verbose)
{
VerboseLog(L.BaZic.Runtime.Interpreters.ProgramInterpreter.CloseUi);
}
UserInterface?.Dispatcher?.InvokeShutdown();
};
}
BaZicInterpreter.ChangeState(this, new BaZicInterpreterStateChangeEventArgs(BaZicInterpreterState.Idle));
window?.Show();
Dispatcher.Run();
}
catch (Exception exception)
{
CoreHelper.ReportException(exception);
eventException = exception;
}
finally
{
try
{
window?.Close();
}
catch (Exception exception)
{
CoreHelper.ReportException(exception);
}
finally
{
RuntimeResourceManager.DeleteResources(ExecutionFlowId.ToString());
foreach (var variable in Variables)
{
variable.Dispose();
}
BaZicInterpreter.Reflection.UnsubscribeAllEvents();
UserInterface = null;
}
}
});
if (eventException != null)
{
throw eventException;
}
}
}
