public override AstNode Visit(InterfaceDefinition node)
{
// Parse the generic signature.
GenericSignature genericSign = node.GetGenericSignature();
GenericPrototype genProto = GenericPrototype.Empty;
PseudoScope protoScope = null;
if (genericSign != null)
{
// Visit the generic signature.
genericSign.Accept(this);
// Connect the generic prototype.
genProto = genericSign.GetPrototype();
// Create the placeholders scope.
protoScope = new PseudoScope(currentScope, genProto);
node.SetGenericScope(protoScope);
}
// Prevent redefinition.
ScopeMember old = currentContainer.FindType(node.GetName(), genProto);
if (old != null)
{
Error(node, "trying to redefine a class.");
}
// Create the structure
Interface iface = new Interface(node.GetName(), node.GetFlags(), currentContainer);
iface.SetGenericPrototype(genProto);
node.SetStructure(iface);
iface.Position = node.GetPosition();
// Register type maps.
string fullName = iface.GetFullName();
IChelaType alias;
if (typeMaps.TryGetValue(fullName, out alias))
{
currentModule.RegisterTypeMap(alias, ReferenceType.Create(iface));
}
// Register some important interfaces.
if (fullName == "Chela.Lang.NumberConstraint")
{
currentModule.RegisterNumberConstraint(iface);
}
else if (fullName == "Chela.Lang.IntegerConstraint")
{
currentModule.RegisterIntegerConstraint(iface);
}
else if (fullName == "Chela.Lang.FloatingPointConstraint")
{
currentModule.RegisterFloatingPointConstraint(iface);
}
else if (fullName == "Chela.Collections.IEnumerable")
{
currentModule.RegisterEnumerableIface(iface);
}
else if (fullName == "Chela.Collections.IEnumerator")
{
currentModule.RegisterEnumeratorIface(iface);
}
else if (fullName.StartsWith("Chela.Collections.Generic.IEnumerable<"))
{
currentModule.RegisterEnumerableGIface(iface);
}
else if (fullName.StartsWith("Chela.Collections.Generic.IEnumerator<"))
{
currentModule.RegisterEnumeratorGIface(iface);
}
// Use the prototype scope.
if (protoScope != null)
{
PushScope(protoScope);
}
// Add into the current scope.
if (currentContainer.IsNamespace())
{
Namespace space = (Namespace)currentContainer;
space.AddType(iface);
}
else if (currentContainer.IsStructure() || currentContainer.IsInterface() || currentContainer.IsClass())
{
Structure parent = (Structure)currentContainer;
parent.AddType(iface);
}
else
{
Error(node, "unexpected place for a class.");
}
// Push the interface unsafe.
if (iface.IsUnsafe())
{
PushUnsafe();
}
// Update the scope.
PushScope(iface);
// Visit the building children.
VisitList(node.GetChildren());
// Restore the scope.
PopScope();
// Restore the generic scope.
if (protoScope != null)
{
PopScope();
}
// Pop the interface unsafe.
if (iface.IsUnsafe())
{
PopUnsafe();
}
return(node);
}
