public override AstNode Visit(NamespaceDefinition node)
{
// Handle nested names.
string fullname = node.GetName();
StringBuilder nameBuilder = new StringBuilder();
int numscopes = 0;
for (int i = 0; i < fullname.Length; i++)
{
char c = fullname[i];
if (c != '.')
{
nameBuilder.Append(c);
if (i + 1 < fullname.Length)
{
continue;
}
}
// Expect full name.
if (c == '.' && i + 1 == fullname.Length)
{
Error(node, "expected complete namespace name.");
}
// Find an already declared namespace.
string name = nameBuilder.ToString();
nameBuilder.Length = 0;
ScopeMember old = currentContainer.FindMember(name);
if (old != null)
{
if (!old.IsNamespace())
{
Error(node, "defining namespace collides with another thing.");
}
// Store a reference in the node.
node.SetNamespace((Namespace)old);
}
else
{
// Cast the current scope.
Namespace space = (Namespace)currentContainer;
// Create, name and add the new namespace.
Namespace newNamespace = new Namespace(space);
newNamespace.SetName(name);
space.AddMember(newNamespace);
// Store a reference in the node.
node.SetNamespace(newNamespace);
}
// Update the scope.
PushScope(node.GetNamespace());
// Increase the number of scopes.
numscopes++;
}
// Visit the children.
VisitList(node.GetChildren());
// Restore the scopes.
for (int i = 0; i < numscopes; i++)
{
PopScope();
}
return(node);
}
