public IMember LookupNameInScopes(string name, out IScope scope, LookupOptions options)
{
var scopes = CurrentScope.ToChainTowardsGlobal().ToList();
if (scopes.Count == 1)
{
if (!options.HasFlag(LookupOptions.Local) && !options.HasFlag(LookupOptions.Global))
{
scopes.Clear();
}
}
else if (scopes.Count >= 2)
{
if (!options.HasFlag(LookupOptions.Nonlocal))
{
while (scopes.Count > 2)
{
scopes.RemoveAt(1);
}
}
if (!options.HasFlag(LookupOptions.Local))
{
scopes.RemoveAt(0);
}
if (!options.HasFlag(LookupOptions.Global))
{
scopes.RemoveAt(scopes.Count - 1);
}
}
scope = scopes.FirstOrDefault(s => s.Variables.Contains(name));
var value = scope?.Variables[name].Value;
if (value == null)
{
if (Module != Interpreter.ModuleResolution.BuiltinsModule && options.HasFlag(LookupOptions.Builtins))
{
value = Interpreter.ModuleResolution.BuiltinsModule.GetMember(name);
}
}
return(value);
}