private bool DiscoverTypes(string pType, TextSpan pSpan)
{
//If a node doesn't exist the type hasn't been declared
if (!_discoveryGraph.NodeExists(pType))
{
CompilerErrors.UndeclaredType(pType, pSpan);
return(false);
}
//If we have been here already we have a circular reference in our types
//ie Type1 has a field of Type2; Type2 has a field of Type1
var item = _discoveryGraph.GetNode(pType);
if (item.Permanent)
{
return(true);
}
if (item.Temporary)
{
CompilerErrors.CircularReference(item.Node, item.Node.Span);
return(false);
}
item.Temporary = true;
for (int i = 0; i < item.Node.Fields.Count; i++)
{
var type = item.Node.Fields[i].TypeNode;
var nt = type.Value;
if (nt.IndexOf('[') > -1)
{
nt = nt.Substring(0, nt.IndexOf('['));
}
//Only look through user defined types which should be undefined at this point
if (!item.Node.TypeParameters.Contains(nt) &&
!_unit.IsTypeDefined(type.Namespace, nt) &&
!DiscoverTypes(nt, type.Span))
{
return(false);
}
}
item.Permanent = true;
return(AddType(item.Node));
}
