protected static void FillReturnVariablesFromValues(SequenceVariable[] ReturnVars, IAction Action, IGraphProcessingEnvironment procEnv, List <object[]> retElemsList)
{
IList[] returnVars = null;
if (ReturnVars.Length > 0)
{
returnVars = new IList[ReturnVars.Length];
for (int i = 0; i < ReturnVars.Length; ++i)
{
returnVars[i] = ReturnVars[i].GetVariableValue(procEnv) as IList;
if (returnVars[i] == null)
{
string returnType = TypesHelper.DotNetTypeToXgrsType(Action.RulePattern.Outputs[i]);
Type valueType = TypesHelper.GetType(returnType, procEnv.Graph.Model);
returnVars[i] = ContainerHelper.NewList(valueType);
ReturnVars[i].SetVariableValue(returnVars[i], procEnv);
}
else
{
returnVars[i].Clear();
}
}
}
for (int curRetElemNum = 0; curRetElemNum < retElemsList.Count; ++curRetElemNum)
{
object[] retElems = retElemsList[curRetElemNum];
for (int i = 0; i < ReturnVars.Length; ++i)
{
returnVars[i].Add(retElems[i]);
}
}
}
/// <summary>
/// If the attribute of the given name of the given element is a container attribute
/// then return a clone of the given container value, otherwise just return the original value;
/// additionally returns the AttributeType of the attribute of the element.
/// </summary>
public static object IfAttributeOfElementIsContainerThenCloneContainer(
IObject element, String AttributeName, object value, out AttributeType attrType)
{
attrType = element.Type.GetAttributeType(AttributeName);
if (attrType.Kind == AttributeKind.SetAttr || attrType.Kind == AttributeKind.MapAttr)
{
Type keyType, valueType;
ContainerHelper.GetDictionaryTypes(element.GetAttribute(AttributeName), out keyType, out valueType);
return(ContainerHelper.NewDictionary(keyType, valueType, value)); // by-value-semantics -> clone dictionary
}
else if (attrType.Kind == AttributeKind.ArrayAttr)
{
Type valueType;
ContainerHelper.GetListType(element.GetAttribute(AttributeName), out valueType);
return(ContainerHelper.NewList(valueType, value)); // by-value-semantics -> clone array
}
else if (attrType.Kind == AttributeKind.DequeAttr)
{
Type valueType;
ContainerHelper.GetDequeType(element.GetAttribute(AttributeName), out valueType);
return(ContainerHelper.NewDeque(valueType, value)); // by-value-semantics -> clone deque
}
return(value);
}
