public override AstNode Visit(UsingStatement node)
{
// Visit the using member.
Expression member = node.GetMember();
member.Accept(this);
// Cast the pseudo-scope.
PseudoScope scope = (PseudoScope)node.GetScope();
// Get the member type.
IChelaType memberType = member.GetNodeType();
if (memberType.IsMetaType())
{
// Get the actual type.
MetaType meta = (MetaType)memberType;
memberType = meta.GetActualType();
// Only structure relatives.
if (memberType.IsStructure() || memberType.IsClass() || memberType.IsInterface())
{
scope.AddAlias(memberType.GetName(), (ScopeMember)memberType);
}
else
{
Error(node, "unexpected type.");
}
}
else if (memberType.IsReference())
{
// Only static members supported.
ScopeMember theMember = (ScopeMember)member.GetNodeValue();
MemberFlags instanceFlags = MemberFlags.InstanceMask & theMember.GetFlags();
if (instanceFlags != MemberFlags.Static)
{
Error(node, "unexpected member type.");
}
// Store the member.
scope.AddAlias(theMember.GetName(), theMember);
}
else if (memberType.IsNamespace())
{
// Set the namespace chain.
Namespace space = (Namespace)member.GetNodeValue();
scope.SetChainNamespace(space);
}
else
{
Error(node, "unsupported object to use.");
}
base.Visit(node);
return(node);
}
public override AstNode Visit(UsingStatement node)
{
// Create the pseudo-scope.
PseudoScope scope = new PseudoScope(currentScope);
// Store it in the node.
node.SetScope(scope);
// Change the ast layout to reflect the new scope hierarchy.
node.SetChildren(node.GetNext());
node.SetNext(null);
// Update the scope.
PushScope(node.GetScope());
// Visit his children.
VisitList(node.GetChildren());
// Restore the scope.
PopScope();
return(node);
}
