public override void Visit(ExtractMinQueryNode node)
{
_symbolTable.SetCurrentNode(node);
checkCollectionFollowsCollection(node.Variable);
AllType collectionNameType = _symbolTable.RetrieveSymbol(node.Variable, out bool isCollectionInQuery, false) ?? AllType.UNKNOWNTYPE;
/*if (_symbolTable.IsClass(collectionNameType)) {
* _symbolTable.CollectionOfClasses();
* return;
* }*/
if (isCollectionInQuery)
{
node.Type = collectionNameType.ToString().ToLower();
if (!_symbolTable.IsClass(node.Type_enum) && node.Attribute != null && node.Attribute != "")
{
_symbolTable.AttributeUsedOnNonClass();
}
}
else
{
_symbolTable.NotCollection(node.Variable);
}
if (node.WhereCondition != null)
{
node.WhereCondition.Accept(this);
}
}
public override string ToString()
{
string collection = IsCollection ? "COLLECTION" : "";
string colName;
colName = collection;
return(colName + " " + Type.ToString() + "|Depth:" + Depth + "|Reach:" + Reachable.ToString());
}
public override void Visit(DequeueQueryNode node)
{
_symbolTable.SetCurrentNode(node);
AllType CollectionType = _symbolTable.RetrieveSymbol(node.Variable, out bool isCollection) ?? AllType.UNKNOWNTYPE;
if (!isCollection)
{
_symbolTable.ExpectedCollection();
return;
}
node.Type = CollectionType.ToString().ToLower();
}
/// <summary>
/// Retrieves the type from classes.
/// </summary>
/// <returns>The type from classes.</returns>
/// <param name="names">Names.</param>
/// <param name="type">Type.</param>
/// <param name="IsCollection">If set to <c>true</c> is collection.</param>
/// <param name="ShowErrors">If set to <c>true</c> show errors.</param>
private AllType?RetrieveTypeFromClasses(List <string> names, AllType type, out bool IsCollection, bool ShowErrors = true)
{
// [GRAPH/VERTEX/EDGE]-><KEYS>->ClassEntry
string name = names[0];
// Check if the class contains a variable with the name given
if (_classesTable[type].ContainsKey(name))
{
var entry = _classesTable[type][name];
// Check if the type on the names place, is a class type
if (IsClass(entry.Type))
{
// Check how many names are left to handle, its its more then 1, continue
if (names.Count > 1)
{
// Remove the first name, since its no longer needed
names.RemoveAt(0);
// Call RetriveTypeFromClasses recursively until the final type is determined
return(RetrieveTypeFromClasses(names, entry.Type, out IsCollection, ShowErrors));
}
else
{
// If this is the last name, return the type of it.
IsCollection = entry.Collection;
return(entry.Type);
}
}
// If its not a class, just return the type
else
{
IsCollection = entry.Collection;
return(_classesTable[type][name].Type);
}
}
else
{
if (ShowErrors)
{
Console.WriteLine(name + " is undeclared in the class " + type.ToString());
}
IsCollection = false;
return(null);
}
}