private void ParseEvent()
{
uint mask = ~(uint)Modifier.EventMods;
if (((uint)curmods & mask) != (uint)Modifier.Empty)
ReportError("Event contains illegal modifiers");
EventNode node = new EventNode(curtok);
ClassNode cl = typeStack.Peek();
cl.Events.Add(node);
if (curAttributes.Count > 0)
{
node.Attributes = curAttributes;
curAttributes = new NodeCollection<AttributeNode>();
}
node.Modifiers = curmods;
curmods = Modifier.Empty;
if ((node.Modifiers & Modifier.Unsafe) != Modifier.Empty)
{
//unsafe modifier -> unsafe type.
isUnsafe++;
node.IsUnsafeDeclared = true;
}
//the event is declared in an unsafe type ?
node.IsUnsafe = isUnsafe > 0;
CheckStaticClass(cl, node.Modifiers, true); ;
Advance(); // advance over event keyword
node.Type = ParseType();
if (curtok.ID != TokenID.Ident)
ReportError("Expected event member name.");
while (curtok.ID == TokenID.Ident)
{
node.Names.Add(ParseQualifiedIdentifier(true, false, true));
}
//TODO: Omer - Add all of the events in that line to the name table once Robin fixes the code.
switch (curtok.ID)
{
case TokenID.Semi:
AssertAndAdvance(TokenID.Semi);
break;
case TokenID.Equal:
Advance();
node.Value = ParseConstExpr();
AssertAndAdvance(TokenID.Semi);
break;
case TokenID.LCurly:
Advance(); // over lcurly
ParsePossibleAttributes(false);
if (curtok.ID != TokenID.Ident)
{
ReportError("Event accessor requires add or remove clause.");
}
string curAccessor = strings[curtok.Data];
Advance(); // over ident
if (curAccessor == "add")
{
node.AddBlock = new AccessorNode(false, curtok);
node.AddBlock.Kind = "add";
node.AddBlock.IsUnsafe = isUnsafe > 0;
ApplyAttributes( node.AddBlock );
ParseBlock( node.AddBlock.StatementBlock );
ParsePossibleAttributes(false);
if (curtok.ID == TokenID.Ident && strings[curtok.Data] == "remove")
{
node.RemoveBlock = new AccessorNode( false, curtok );
node.RemoveBlock.IsUnsafe = isUnsafe > 0;
node.RemoveBlock.Kind = "remove";
ApplyAttributes( node.RemoveBlock );
Advance(); // over ident
ParseBlock( node.RemoveBlock.StatementBlock );
}
else
{
ReportError("Event accessor expected remove clause.");
}
}
else if (curAccessor == "remove")
{
node.RemoveBlock = new AccessorNode(false, curtok);
node.RemoveBlock.IsUnsafe = isUnsafe > 0;
node.RemoveBlock.Kind = "remove";
ApplyAttributes( node.RemoveBlock );
ParseBlock( node.RemoveBlock.StatementBlock );
ParsePossibleAttributes(false);
if (curtok.ID == TokenID.Ident && strings[curtok.Data] == "add")
{
node.AddBlock = new AccessorNode(false, curtok);
node.AddBlock.IsUnsafe = isUnsafe > 0;
node.AddBlock.Kind = "remove";
Advance(); // over ident
ApplyAttributes(node.AddBlock);
ParseBlock(node.AddBlock.StatementBlock);
}
else
{
ReportError("Event accessor expected add clause.");
}
}
else
{
ReportError("Event accessor requires add or remove clause.");
}
AssertAndAdvance(TokenID.RCurly);
break;
}
if ((node.Modifiers & Modifier.Unsafe) != Modifier.Empty)
{
//unsafe modifier -> unsafe type.
isUnsafe--;
}
}
public virtual object VisitEventDeclaration(EventNode eventDeclaration, object data)
{
stackMap.Push(eventDeclaration);
eventDeclaration.Attributes.AcceptVisitor(this, data);
if (eventDeclaration.AddBlock != null)
{
eventDeclaration.AddBlock.AcceptVisitor(this, data);
}
if (eventDeclaration.RemoveBlock != null)
{
eventDeclaration.RemoveBlock.AcceptVisitor(this, data);
}
eventDeclaration.Type.AcceptVisitor(this, data);
if (eventDeclaration.Value != null)
{
eventDeclaration.Value.AcceptVisitor(this, data);
}
stackMap.Pop();
return null;
}