public override String AttrPrint()
{
String retVal;
if (Utilities.attrToType(this.attrRef) == "ErrorTypeDescriptor")
{
retVal = String.Format("\nType: {0} (check argument in this if-statement)", Utilities.attrToType(this.attrRef));
}
else
{
SelectionStmtTypeDescriptor SSTD = this.attrRef.typeInfo;
retVal = String.Format("\nType: {0} (If-Statement) with valid boolean argument", Utilities.attrToType(this.attrRef));
// If we have an else path
if (SSTD.ElsePathNode != null)
{
retVal += String.Format("\nStatement Type: {0}\nElse-Path Type: {1}", Utilities.attrToType(SSTD.StatementNode.attrRef), Utilities.attrToType(SSTD.ElsePathNode.attrRef));
}
else
{
retVal += String.Format("\nStatement Type: {0} and No Else-Path", Utilities.attrToType(SSTD.StatementNode.attrRef));
}
}
return(retVal);
}
public void VisitNode(SelectionStmt node)
{
//currentSymbolTable.incrNestLevel();
// Dcl-Visit all children
Utilities.DclVisitAllChildren(node, this);
// We always have an expression
// We always have a statement
// We sometimes have an else statement
Attributes a = new Attributes("SelectionStmt");
SelectionStmtTypeDescriptor STD = new SelectionStmtTypeDescriptor();
STD.StatementNode = null;
STD.ElsePathNode = null;
STD.StatementNode = null;
ErrorTypeDescriptor ETD = new ErrorTypeDescriptor();
// If our expression is a boolean, we are valid
a.typeInfo = ETD;
List <Expr> matchingChildren = Utilities.GetChildren(node, typeof(Expr)).Cast <Expr>().ToList();
if (Utilities.attrToType(matchingChildren[0].attrRef) == "BooleanTypeDescriptor")
{
STD.StatementNode = matchingChildren[0];
a.typeInfo = STD;
}
// Get all children
AbstractNode an;
an = node.Child;
while (an != null)
{
// Filter out all expr from this
if (Utilities.attrToType(an.attrRef) != "BooleanTypeDescriptor")
{
// Add the else to the else in the type descp
if (an.Name != null && an.Name.Contains("Else"))
{
STD.ElsePathNode = an;
}
else
{
STD.StatementNode = an;
}
}
an = an.Sib;
}
node.attrRef = a;
//currentSymbolTable.decrNestLevel();
}