private static void AssertIsCodeActivity(Activity activity)
{
Type codeActivityOfTType = null;
ActivityWithResult activityWithResult = activity as ActivityWithResult;
if (activityWithResult != null)
{
codeActivityOfTType = typeof(CodeActivity <>).MakeGenericType(activityWithResult.ResultType);
}
Fx.Assert(activity is CodeActivity || (codeActivityOfTType != null && codeActivityOfTType.GetTypeInfo().IsAssignableFrom(activity.GetType().GetTypeInfo())), "Expected CodeActivity or CodeActivity<T>");
}
internal void Validate(Activity owner, ref IList <ValidationError> validationErrors)
{
if (this.Expression != null)
{
if (this.Expression.Result != null && !this.Expression.Result.IsEmpty)
{
ValidationError validationError = new ValidationError(SR.ResultCannotBeSetOnArgumentExpressions, false, this.RuntimeArgument.Name, owner);
ActivityUtilities.Add(ref validationErrors, validationError);
}
ActivityWithResult actualExpression = this.Expression;
if (actualExpression is IExpressionWrapper)
{
actualExpression = ((IExpressionWrapper)actualExpression).InnerExpression;
}
switch (this.Direction)
{
case ArgumentDirection.In:
if (actualExpression.ResultType != this.ArgumentType)
{
ActivityUtilities.Add(
ref validationErrors,
new ValidationError(SR.ArgumentValueExpressionTypeMismatch(this.ArgumentType, actualExpression.ResultType), false, this.RuntimeArgument.Name, owner));
}
break;
case ArgumentDirection.InOut:
case ArgumentDirection.Out:
Type locationType;
if (!ActivityUtilities.IsLocationGenericType(actualExpression.ResultType, out locationType) ||
locationType != this.ArgumentType)
{
Type expectedType = ActivityUtilities.CreateActivityWithResult(ActivityUtilities.CreateLocation(this.ArgumentType));
ActivityUtilities.Add(
ref validationErrors,
new ValidationError(SR.ArgumentLocationExpressionTypeMismatch(expectedType.FullName, actualExpression.GetType().FullName), false, this.RuntimeArgument.Name, owner));
}
break;
}
}
}
internal bool InitializeRelationship(Activity parent, bool isPublic, ref IList <ValidationError> validationErrors)
{
if (_cacheId == parent.CacheId)
{
if (this.Owner != null)
{
ValidationError validationError = new ValidationError(SR.VariableAlreadyInUseOnActivity(this.Name, parent.DisplayName, this.Owner.DisplayName), false, this.Name, parent);
ActivityUtilities.Add(ref validationErrors, validationError);
// Get out early since we've already initialized this variable.
return(false);
}
}
this.Owner = parent;
_cacheId = parent.CacheId;
this.IsPublic = isPublic;
if (this.Default != null)
{
ActivityWithResult expression = this.Default;
if (expression is Argument.IExpressionWrapper)
{
expression = ((Argument.IExpressionWrapper)expression).InnerExpression;
}
if (expression.ResultType != this.Type)
{
ActivityUtilities.Add(
ref validationErrors,
new ValidationError(SR.VariableExpressionTypeMismatch(this.Name, this.Type, expression.ResultType), false, this.Name, parent));
}
return(this.Default.InitializeRelationship(this, isPublic, ref validationErrors));
}
return(true);
}
public ActivityWithResultWrapper(ActivityWithResult expression)
{
this.expression = expression;
}
private void AddGeneratedArgument(Type argumentType, ArgumentDirection direction, ActivityWithResult expression)
{
Argument argument = ActivityUtilities.CreateArgument(argumentType, direction);
argument.Expression = expression;
RuntimeArgument runtimeArgument = this.metadata.CurrentActivity.AddTempAutoGeneratedArgument(argumentType, direction);
Argument.TryBind(argument, runtimeArgument, this.metadata.CurrentActivity);
}
internal void CreateLocationArgument(LocationReference sourceReference, bool useLocationReferenceValue = false)
{
ActivityWithResult expression = ActivityUtilities.CreateLocationAccessExpression(sourceReference, true, useLocationReferenceValue);
AddGeneratedArgument(expression.ResultType, ArgumentDirection.In, expression);
}