public virtual bool TryGetAttr(ICallerContext context, SymbolId name, out object value)
{
switch (name.Id)
{
case SymbolTable.NameId: value = __name__; return(true);
case SymbolTable.BasesId: value = BaseClasses; return(true);
case SymbolTable.ClassId: value = Ops.GetDynamicType(this); return(true);
case SymbolTable.SubclassesId:
ReflectedMethod rm = new ReflectedMethod("__subclasses__", typeof(ReflectedType).GetMethod("__subclasses__"), FunctionType.PythonVisible | FunctionType.Method);;
rm.inst = this;
value = rm;
return(true);
default:
if (TryLookupSlot(context, name, out value))
{
value = Ops.GetDescriptor(value, null, this);
return(true);
}
break;
}
return(false);
}
//!!! This needs to go
public void InitializeBuiltins()
{
FieldInfo ti = __dict__.GetType().GetField(ModuleFieldName);
if (ti != null)
{
ti.SetValue(__dict__, this);
}
foreach (FieldInfo fi in __dict__.GetType().GetFields())
{
if (fi.FieldType != typeof(object) && fi.FieldType != typeof(BuiltinWrapper))
{
continue;
}
if (!fi.IsStatic)
{
continue;
}
if (fi.Name == "__debug__")
{
fi.SetValue(null, new BuiltinWrapper(IronPython.Hosting.PythonEngine.options.DebugMode, "__debug__"));
continue;
}
//!!! GetAttr instead of GetSlot
object bi;
if (TypeCache.Builtin.TryGetSlot(DefaultContext.Default, SymbolTable.StringToId(fi.Name), out bi))
{
Debug.Assert(fi.FieldType == typeof(BuiltinWrapper));
ReflectedMethod rm = bi as ReflectedMethod;
BuiltinFunction bf;
if (rm != null)
{
// update the dictionary w/ an optimized version, if one's available.
bf = ReflectOptimizer.MakeFunction(rm);
if (bf != null)
{
bi = bf;
}
}
fi.SetValue(null, new BuiltinWrapper(Ops.GetDescriptor(bi, null, TypeCache.Builtin), fi.Name));
continue;
}
if (fi.GetValue(null) == null)
{
Debug.Assert(fi.FieldType == typeof(object));
fi.SetValue(null, new Uninitialized(fi.Name));
}
}
}
// Use indexing on generic methods to provide a new reflected method with targets bound with
// the supplied type arguments.
public object this[object key] {
get {
// Retrieve the list of type arguments from the index.
Type[] types;
Tuple typesTuple = key as Tuple;
if (typesTuple != null)
{
types = new Type[typesTuple.Count];
for (int i = 0; i < types.Length; i++)
{
types[i] = Converter.ConvertToType(typesTuple[i]);
}
}
else
{
types = new Type[] { Converter.ConvertToType(key) };
}
// Start building a new ReflectedMethod that will contain targets with bound type
// arguments.
ReflectedMethod rm = new ReflectedMethod();
// Search for generic targets with the correct arity (number of type parameters).
// Compatible targets must be MethodInfos by definition (constructors never take
// type arguments).
int arity = types.Length;
foreach (MethodBase mb in targets)
{
MethodInfo mi = mb as MethodInfo;
if (mi == null)
{
continue;
}
if (mi.ContainsGenericParameters && mi.GetGenericArguments().Length == arity)
{
rm.AddMethod(mi.MakeGenericMethod(types));
}
}
if (rm.Targets == null)
{
throw Ops.TypeError(string.Format("bad type args to this generic method {0}", this));
}
rm.Name = Name;
rm.FunctionType = FunctionType | FunctionType.OptimizeChecked; // don't want to optimize & whack our dictionary.
rm.inst = inst;
return(rm);
}
set {
throw new NotImplementedException();
}
}
public static void PerfTest(ReflectedMethod o, int count)
{
Stopwatch s = new Stopwatch();
s.Start();
for (int i = 0; i < count; i++)
{
o.Call();
}
s.Stop();
Console.WriteLine(s.Elapsed);
}
public object this[object key] {
get {
// Retrieve the signature from the index.
Type[] sig;
Tuple sigTuple = key as Tuple;
if (sigTuple != null)
{
sig = new Type[sigTuple.Count];
for (int i = 0; i < sig.Length; i++)
{
sig[i] = Converter.ConvertToType(sigTuple[i]);
}
}
else
{
sig = new Type[] { Converter.ConvertToType(key) };
}
// We can still end up with more than one target since generic and non-generic
// methods can share the same name and signature. So we'll build up a new
// reflected method with all the candidate targets. A caller can then index this
// reflected method if necessary in order to provide generic type arguments and
// fully disambiguate the target.
ReflectedMethod rm = new ReflectedMethod();
rm.Name = function.Name;
rm.FunctionType = function.FunctionType | FunctionType.OptimizeChecked; // don't allow optimization that would whack the real entry
rm.inst = function.inst;
// Search for targets with the right number of arguments.
int args = sig.Length;
foreach (MethodBase mb in function.Targets)
{
ParameterInfo[] pis = mb.GetParameters();
if (pis.Length != args)
{
continue;
}
// Check each parameter type for an exact match.
bool match = true;
for (int i = 0; i < args; i++)
{
if (pis[i].ParameterType != sig[i])
{
match = false;
break;
}
}
if (!match)
{
continue;
}
// Okay, we have a match, add it to the list.
rm.AddMethod(mb);
}
if (rm.Targets == null)
{
throw Ops.TypeError("No match found for the method signature {0}", key);
}
return(rm);
}
set {
throw new NotImplementedException();
}
}
