public void Walk()
{
var self = GetSelf();
_selfType = (self as AstPythonConstant)?.Type as AstPythonType;
var annotationTypes = _scope.GetTypesFromAnnotation(Target.ReturnAnnotation).ExcludeDefault();
_overload.ReturnTypes.AddRange(annotationTypes);
_scope.PushScope();
// Declare self, if any
var skip = 0;
if (self != null)
{
var p0 = Target.Parameters.FirstOrDefault();
if (p0 != null && !string.IsNullOrEmpty(p0.Name))
{
_scope.SetInScope(p0.Name, self);
skip++;
}
}
// Declare parameters in scope
foreach (var p in Target.Parameters.Skip(skip).Where(p => !string.IsNullOrEmpty(p.Name)))
{
var value = _scope.GetValueFromExpression(p.DefaultValue);
_scope.SetInScope(p.Name, value ?? _scope.UnknownType);
}
// return type from the annotation always wins, no need to walk the body.
if (!annotationTypes.Any())
{
Target.Walk(this);
}
_scope.PopScope();
}