public override void Visit(VariableAttributeNode node)
{
// Variable AttrbuteNode is a combined node.
// It can be either a Variable or an Attribute, but not both.
// This is mostly to abstract from variables and attributes in differnet queryes.
SymbolTable.SetCurrentNode(node);
if (node.IsAttribute && CheckDeclared(node.ClassVariableName))
{
bool IsCollection = false;
node.ClassType = SymbolTable.GetVariableType(node.ClassVariableName);
SymbolTable.RetrieveSymbol(node.ClassVariableName, out IsCollection);
node.IsCollection = IsCollection;
if (SymbolTable.AttributeDefined(node.Name, node.ClassType))
{
var AttriType = SymbolTable.GetAttributeType(node.Name, node.ClassType, out IsCollection);
}
}
else
{
CheckDeclared(node.Name);
}
}
public override AbstractNode VisitSetQuery([NotNull] GiraphParser.SetQueryContext context)
{
SetQueryNode SetNode = new SetQueryNode(context.Start.Line, context.Start.Column);
// If its Attributes being set
if (context.variable() != null)
{
SetNode.InVariable = Visit(context.variable());
//SetNode.InVariable.Name = context.variable().GetText();
SetNode.SetAttributes = true;
foreach (var ExpNode in context.setExpressionAtriSim())
{
VariableAttributeNode attribute = Visit(ExpNode.attribute()) as VariableAttributeNode;
attribute.ClassVariableName = SetNode.InVariable.Name; // Only set Class Variable if its an attribute
attribute.IsAttribute = true;
AbstractNode expression = Visit(ExpNode.simpleBoolCompOrExp());
SetNode.Attributes.Add(Tuple.Create(attribute, ExpNode.compoundAssign().GetText(), expression));
}
}
else
{
// If its variables being set
SetNode.SetVariables = true;
foreach (var ExpNode in context.setExpressionVari())
{
VariableAttributeNode attribute = Visit(ExpNode.variable()) as VariableAttributeNode;
AbstractNode expression = Visit(ExpNode.boolCompOrExp()) as AbstractNode;
SetNode.Attributes.Add(Tuple.Create(attribute, ExpNode.compoundAssign().GetText(), expression));
}
}
if (context.where () != null)
{
SetNode.WhereCondition = Visit(context.where ());
}
return(SetNode);
}
public override void Visit(VariableAttributeNode node)
{
}
public override void Visit(VariableAttributeNode node)
{
_symbolTable.SetCurrentNode(node);
VisitChildren(node);
}
public abstract void Visit(VariableAttributeNode node);
