private static ClassInfo GetClassInfo(Type type)
{
ClassInfo ci = new ClassInfo(type);
Hashtable methods = new Hashtable();
ArrayList list;
MethodInfo meth;
ManagedType ob;
String name;
Object item;
Type tp;
int i, n;
// This is complicated because inheritance in Python is name
// based. We can't just find DeclaredOnly members, because we
// could have a base class A that defines two overloads of a
// method and a class B that defines two more. The name-based
// descriptor Python will find needs to know about inherited
// overloads as well as those declared on the sub class.
BindingFlags flags = BindingFlags.Static |
BindingFlags.Instance |
BindingFlags.Public |
BindingFlags.NonPublic;
MemberInfo[] info = type.GetMembers(flags);
Hashtable local = new Hashtable();
ArrayList items = new ArrayList();
MemberInfo m;
// Loop through once to find out which names are declared
for (i = 0; i < info.Length; i++)
{
m = info[i];
if (m.DeclaringType == type)
{
local[m.Name] = 1;
}
}
// Now again to filter w/o losing overloaded member info
for (i = 0; i < info.Length; i++)
{
m = info[i];
if (local[m.Name] != null)
{
items.Add(m);
}
}
if (type.IsInterface)
{
// Interface inheritance seems to be a different animal:
// more contractual, less structural. Thus, a Type that
// represents an interface that inherits from another
// interface does not return the inherited interface's
// methods in GetMembers. For example ICollection inherits
// from IEnumerable, but ICollection's GetMemebers does not
// return GetEnumerator.
//
// Not sure if this is the correct way to fix this, but it
// seems to work. Thanks to Bruce Dodson for the fix.
Type[] inheritedInterfaces = type.GetInterfaces();
for (i = 0; i < inheritedInterfaces.Length; ++i)
{
Type inheritedType = inheritedInterfaces[i];
MemberInfo[] imembers = inheritedType.GetMembers(flags);
for (n = 0; n < imembers.Length; n++)
{
m = imembers[n];
if (local[m.Name] == null)
{
items.Add(m);
}
}
}
}
for (i = 0; i < items.Count; i++)
{
MemberInfo mi = (MemberInfo)items[i];
switch (mi.MemberType)
{
case MemberTypes.Method:
meth = (MethodInfo)mi;
if (!(meth.IsPublic || meth.IsFamily ||
meth.IsFamilyOrAssembly))
continue;
name = meth.Name;
item = methods[name];
if (item == null)
{
item = methods[name] = new ArrayList();
}
list = (ArrayList)item;
list.Add(meth);
continue;
case MemberTypes.Property:
PropertyInfo pi = (PropertyInfo)mi;
MethodInfo mm = null;
try
{
mm = pi.GetGetMethod(true);
if (mm == null)
{
mm = pi.GetSetMethod(true);
}
}
catch (SecurityException)
{
// GetGetMethod may try to get a method protected by
// StrongNameIdentityPermission - effectively private.
continue;
}
if (mm == null)
{
continue;
}
if (!(mm.IsPublic || mm.IsFamily || mm.IsFamilyOrAssembly))
continue;
// Check for indexer
ParameterInfo[] args = pi.GetIndexParameters();
if (args.GetLength(0) > 0)
{
Indexer idx = ci.indexer;
if (idx == null)
{
ci.indexer = new Indexer();
idx = ci.indexer;
}
idx.AddProperty(pi);
continue;
}
ob = new PropertyObject(pi);
ci.members[pi.Name] = ob;
continue;
case MemberTypes.Field:
FieldInfo fi = (FieldInfo)mi;
if (!(fi.IsPublic || fi.IsFamily || fi.IsFamilyOrAssembly))
continue;
ob = new FieldObject(fi);
ci.members[mi.Name] = ob;
continue;
case MemberTypes.Event:
EventInfo ei = (EventInfo)mi;
MethodInfo me = ei.GetAddMethod(true);
if (!(me.IsPublic || me.IsFamily || me.IsFamilyOrAssembly))
continue;
ob = new EventObject(ei);
ci.members[ei.Name] = ob;
continue;
case MemberTypes.NestedType:
tp = (Type)mi;
if (!(tp.IsNestedPublic || tp.IsNestedFamily ||
tp.IsNestedFamORAssem))
continue;
// Note the given instance might be uninitialized
ob = ClassManager.GetClass(tp);
ci.members[mi.Name] = ob;
continue;
}
}
IDictionaryEnumerator iter = methods.GetEnumerator();
while (iter.MoveNext())
{
name = (string)iter.Key;
list = (ArrayList)iter.Value;
MethodInfo[] mlist = (MethodInfo[])list.ToArray(
typeof(MethodInfo)
);
ob = new MethodObject(type, name, mlist);
ci.members[name] = ob;
}
return ci;
}
private static void InitClassBase(Type type, ClassBase impl)
{
// Ensure, that matching Python type exists first.
// It is required for self-referential classes
// (e.g. with members, that refer to the same class)
var pyType = TypeManager.GetOrCreateClass(type);
// Set the handle attributes on the implementing instance.
impl.tpHandle = impl.pyHandle = pyType.Handle;
// First, we introspect the managed type and build some class
// information, including generating the member descriptors
// that we'll be putting in the Python class __dict__.
ClassInfo info = GetClassInfo(type);
impl.indexer = info.indexer;
impl.richcompare = new Dictionary <int, MethodObject>();
// Now we force initialize the Python type object to reflect the given
// managed type, filling the Python type slots with thunks that
// point to the managed methods providing the implementation.
TypeManager.GetOrInitializeClass(impl, type);
// Finally, initialize the class __dict__ and return the object.
using var dict = Runtime.PyObject_GenericGetDict(pyType.Reference);
if (impl.dotNetMembers == null)
{
impl.dotNetMembers = new List <string>();
}
IDictionaryEnumerator iter = info.members.GetEnumerator();
while (iter.MoveNext())
{
var item = (ManagedType)iter.Value;
var name = (string)iter.Key;
impl.dotNetMembers.Add(name);
Runtime.PyDict_SetItemString(dict, name, item.ObjectReference);
// Decref the item now that it's been used.
item.DecrRefCount();
if (ClassBase.CilToPyOpMap.TryGetValue(name, out var pyOp))
{
impl.richcompare.Add(pyOp, (MethodObject)item);
}
}
// If class has constructors, generate an __doc__ attribute.
NewReference doc = default;
Type marker = typeof(DocStringAttribute);
var attrs = (Attribute[])type.GetCustomAttributes(marker, false);
if (attrs.Length != 0)
{
var attr = (DocStringAttribute)attrs[0];
string docStr = attr.DocString;
doc = NewReference.DangerousFromPointer(Runtime.PyString_FromString(docStr));
Runtime.PyDict_SetItem(dict, PyIdentifier.__doc__, doc);
}
var co = impl as ClassObject;
// If this is a ClassObject AND it has constructors, generate a __doc__ attribute.
// required that the ClassObject.ctors be changed to internal
if (co != null)
{
if (co.NumCtors > 0)
{
// Implement Overloads on the class object
if (!CLRModule._SuppressOverloads)
{
var ctors = new ConstructorBinding(type, pyType, co.binder);
// ExtensionType types are untracked, so don't Incref() them.
// TODO: deprecate __overloads__ soon...
Runtime.PyDict_SetItem(dict, PyIdentifier.__overloads__, ctors.ObjectReference);
Runtime.PyDict_SetItem(dict, PyIdentifier.Overloads, ctors.ObjectReference);
ctors.DecrRefCount();
}
// don't generate the docstring if one was already set from a DocStringAttribute.
if (!CLRModule._SuppressDocs && doc.IsNull())
{
doc = co.GetDocString();
Runtime.PyDict_SetItem(dict, PyIdentifier.__doc__, doc);
}
}
}
doc.Dispose();
// The type has been modified after PyType_Ready has been called
// Refresh the type
Runtime.PyType_Modified(pyType.Reference);
}
private static ClassInfo GetClassInfo(Type type)
{
var ci = new ClassInfo();
var methods = new Hashtable();
ArrayList list;
MethodInfo meth;
ManagedType ob;
string name;
object item;
Type tp;
int i, n;
MemberInfo[] info = type.GetMembers(BindingFlags);
var local = new Hashtable();
var items = new ArrayList();
MemberInfo m;
// Loop through once to find out which names are declared
for (i = 0; i < info.Length; i++)
{
m = info[i];
if (m.DeclaringType == type)
{
local[m.Name] = 1;
}
}
// only [Flags] enums support bitwise operations
if (type.IsEnum && type.IsFlagsEnum())
{
var opsImpl = typeof(EnumOps <>).MakeGenericType(type);
foreach (var op in opsImpl.GetMethods(OpsHelper.BindingFlags))
{
local[op.Name] = 1;
}
info = info.Concat(opsImpl.GetMethods(OpsHelper.BindingFlags)).ToArray();
}
// Now again to filter w/o losing overloaded member info
for (i = 0; i < info.Length; i++)
{
m = info[i];
if (local[m.Name] != null)
{
items.Add(m);
}
}
if (type.IsInterface)
{
// Interface inheritance seems to be a different animal:
// more contractual, less structural. Thus, a Type that
// represents an interface that inherits from another
// interface does not return the inherited interface's
// methods in GetMembers. For example ICollection inherits
// from IEnumerable, but ICollection's GetMemebers does not
// return GetEnumerator.
//
// Not sure if this is the correct way to fix this, but it
// seems to work. Thanks to Bruce Dodson for the fix.
Type[] inheritedInterfaces = type.GetInterfaces();
for (i = 0; i < inheritedInterfaces.Length; ++i)
{
Type inheritedType = inheritedInterfaces[i];
MemberInfo[] imembers = inheritedType.GetMembers(BindingFlags);
for (n = 0; n < imembers.Length; n++)
{
m = imembers[n];
if (local[m.Name] == null)
{
items.Add(m);
}
}
}
// All interface implementations inherit from Object,
// but GetMembers don't return them either.
var objFlags = BindingFlags.Public | BindingFlags.Instance;
foreach (var mi in typeof(object).GetMembers(objFlags))
{
if (local[mi.Name] == null)
{
items.Add(mi);
}
}
}
for (i = 0; i < items.Count; i++)
{
var mi = (MemberInfo)items[i];
switch (mi.MemberType)
{
case MemberTypes.Method:
meth = (MethodInfo)mi;
if (!ShouldBindMethod(meth))
{
continue;
}
name = meth.Name;
item = methods[name];
if (item == null)
{
item = methods[name] = new ArrayList();
}
list = (ArrayList)item;
list.Add(meth);
continue;
case MemberTypes.Property:
var pi = (PropertyInfo)mi;
if (!ShouldBindProperty(pi))
{
continue;
}
// Check for indexer
ParameterInfo[] args = pi.GetIndexParameters();
if (args.GetLength(0) > 0)
{
Indexer idx = ci.indexer;
if (idx == null)
{
ci.indexer = new Indexer();
idx = ci.indexer;
}
idx.AddProperty(pi);
continue;
}
ob = new PropertyObject(pi);
ci.members[pi.Name] = ob;
continue;
case MemberTypes.Field:
var fi = (FieldInfo)mi;
if (!ShouldBindField(fi))
{
continue;
}
ob = new FieldObject(fi);
ci.members[mi.Name] = ob;
continue;
case MemberTypes.Event:
var ei = (EventInfo)mi;
if (!ShouldBindEvent(ei))
{
continue;
}
ob = new EventObject(ei);
ci.members[ei.Name] = ob;
continue;
case MemberTypes.NestedType:
tp = (Type)mi;
if (!(tp.IsNestedPublic || tp.IsNestedFamily ||
tp.IsNestedFamORAssem))
{
continue;
}
// Note the given instance might be uninitialized
ob = GetClass(tp);
// GetClass returns a Borrowed ref. ci.members owns the reference.
ob.IncrRefCount();
ci.members[mi.Name] = ob;
continue;
}
}
IDictionaryEnumerator iter = methods.GetEnumerator();
while (iter.MoveNext())
{
name = (string)iter.Key;
list = (ArrayList)iter.Value;
var mlist = (MethodInfo[])list.ToArray(typeof(MethodInfo));
ob = new MethodObject(type, name, mlist);
ci.members[name] = ob;
if (mlist.Any(OperatorMethod.IsOperatorMethod))
{
string pyName = OperatorMethod.GetPyMethodName(name);
string pyNameReverse = OperatorMethod.ReversePyMethodName(pyName);
OperatorMethod.FilterMethods(mlist, out var forwardMethods, out var reverseMethods);
// Only methods where the left operand is the declaring type.
if (forwardMethods.Length > 0)
{
ci.members[pyName] = new MethodObject(type, name, forwardMethods);
}
// Only methods where only the right operand is the declaring type.
if (reverseMethods.Length > 0)
{
ci.members[pyNameReverse] = new MethodObject(type, name, reverseMethods);
}
}
}
if (ci.indexer == null && type.IsClass)
{
// Indexer may be inherited.
var parent = type.BaseType;
while (parent != null && ci.indexer == null)
{
foreach (var prop in parent.GetProperties())
{
var args = prop.GetIndexParameters();
if (args.GetLength(0) > 0)
{
ci.indexer = new Indexer();
ci.indexer.AddProperty(prop);
break;
}
}
parent = parent.BaseType;
}
}
return(ci);
}
private static ClassInfo GetClassInfo(Type type)
{
var ci = new ClassInfo(type);
var methods = new Hashtable();
ArrayList list;
MethodInfo meth;
ManagedType ob;
string name;
object item;
Type tp;
int i, n;
// This is complicated because inheritance in Python is name
// based. We can't just find DeclaredOnly members, because we
// could have a base class A that defines two overloads of a
// method and a class B that defines two more. The name-based
// descriptor Python will find needs to know about inherited
// overloads as well as those declared on the sub class.
BindingFlags flags = BindingFlags.Static |
BindingFlags.Instance |
BindingFlags.Public |
BindingFlags.NonPublic;
MemberInfo[] info = type.GetMembers(flags);
var local = new Hashtable();
var items = new ArrayList();
MemberInfo m;
// Loop through once to find out which names are declared
for (i = 0; i < info.Length; i++)
{
m = info[i];
if (m.DeclaringType == type)
{
local[m.Name] = 1;
}
}
// Now again to filter w/o losing overloaded member info
for (i = 0; i < info.Length; i++)
{
m = info[i];
if (local[m.Name] != null)
{
items.Add(m);
}
}
if (type.IsInterface)
{
// Interface inheritance seems to be a different animal:
// more contractual, less structural. Thus, a Type that
// represents an interface that inherits from another
// interface does not return the inherited interface's
// methods in GetMembers. For example ICollection inherits
// from IEnumerable, but ICollection's GetMemebers does not
// return GetEnumerator.
//
// Not sure if this is the correct way to fix this, but it
// seems to work. Thanks to Bruce Dodson for the fix.
Type[] inheritedInterfaces = type.GetInterfaces();
for (i = 0; i < inheritedInterfaces.Length; ++i)
{
Type inheritedType = inheritedInterfaces[i];
MemberInfo[] imembers = inheritedType.GetMembers(flags);
for (n = 0; n < imembers.Length; n++)
{
m = imembers[n];
if (local[m.Name] == null)
{
items.Add(m);
}
}
}
}
for (i = 0; i < items.Count; i++)
{
var mi = (MemberInfo)items[i];
switch (mi.MemberType)
{
case MemberTypes.Method:
meth = (MethodInfo)mi;
if (!(meth.IsPublic || meth.IsFamily ||
meth.IsFamilyOrAssembly))
{
continue;
}
name = meth.Name;
item = methods[name];
if (item == null)
{
item = methods[name] = new ArrayList();
}
list = (ArrayList)item;
list.Add(meth);
continue;
case MemberTypes.Property:
var pi = (PropertyInfo)mi;
MethodInfo mm = null;
try
{
mm = pi.GetGetMethod(true);
if (mm == null)
{
mm = pi.GetSetMethod(true);
}
}
catch (SecurityException)
{
// GetGetMethod may try to get a method protected by
// StrongNameIdentityPermission - effectively private.
continue;
}
if (mm == null)
{
continue;
}
if (!(mm.IsPublic || mm.IsFamily || mm.IsFamilyOrAssembly))
{
continue;
}
// Check for indexer
ParameterInfo[] args = pi.GetIndexParameters();
if (args.GetLength(0) > 0)
{
Indexer idx = ci.indexer;
if (idx == null)
{
ci.indexer = new Indexer();
idx = ci.indexer;
}
idx.AddProperty(pi);
continue;
}
ob = new PropertyObject(pi);
ci.members[pi.Name] = ob;
continue;
case MemberTypes.Field:
var fi = (FieldInfo)mi;
if (!(fi.IsPublic || fi.IsFamily || fi.IsFamilyOrAssembly))
{
continue;
}
ob = new FieldObject(fi);
ci.members[mi.Name] = ob;
continue;
case MemberTypes.Event:
var ei = (EventInfo)mi;
MethodInfo me = ei.GetAddMethod(true);
if (!(me.IsPublic || me.IsFamily || me.IsFamilyOrAssembly))
{
continue;
}
ob = new EventObject(ei);
ci.members[ei.Name] = ob;
continue;
case MemberTypes.NestedType:
tp = (Type)mi;
if (!(tp.IsNestedPublic || tp.IsNestedFamily ||
tp.IsNestedFamORAssem))
{
continue;
}
// Note the given instance might be uninitialized
ob = GetClass(tp);
ci.members[mi.Name] = ob;
continue;
}
}
IDictionaryEnumerator iter = methods.GetEnumerator();
while (iter.MoveNext())
{
name = (string)iter.Key;
list = (ArrayList)iter.Value;
var mlist = (MethodInfo[])list.ToArray(typeof(MethodInfo));
ob = new MethodObject(type, name, mlist);
ci.members[name] = ob;
}
return(ci);
}
private static void InitClassBase(Type type, ClassBase impl)
{
// First, we introspect the managed type and build some class
// information, including generating the member descriptors
// that we'll be putting in the Python class __dict__.
ClassInfo info = GetClassInfo(type);
impl.indexer = info.indexer;
// Now we allocate the Python type object to reflect the given
// managed type, filling the Python type slots with thunks that
// point to the managed methods providing the implementation.
IntPtr tp = TypeManager.GetTypeHandle(impl, type);
impl.tpHandle = tp;
// Finally, initialize the class __dict__ and return the object.
IntPtr dict = Marshal.ReadIntPtr(tp, TypeOffset.tp_dict);
IDictionaryEnumerator iter = info.members.GetEnumerator();
while (iter.MoveNext())
{
var item = (ManagedType)iter.Value;
var name = (string)iter.Key;
Runtime.PyDict_SetItemString(dict, name, item.pyHandle);
// info.members are already useless
Runtime.Py_DecRef(item.pyHandle);
}
// If class has constructors, generate an __doc__ attribute.
IntPtr doc = IntPtr.Zero;
Type marker = typeof(DocStringAttribute);
var attrs = (Attribute[])type.GetCustomAttributes(marker, false);
if (attrs.Length == 0)
{
doc = IntPtr.Zero;
}
else
{
var attr = (DocStringAttribute)attrs[0];
string docStr = attr.DocString;
doc = Runtime.PyString_FromString(docStr);
Runtime.PyDict_SetItemString(dict, "__doc__", doc);
Runtime.XDecref(doc);
}
var co = impl as ClassObject;
// If this is a ClassObject AND it has constructors, generate a __doc__ attribute.
// required that the ClassObject.ctors be changed to internal
if (co != null)
{
if (co.ctors.Length > 0)
{
// Implement Overloads on the class object
if (!CLRModule._SuppressOverloads)
{
var ctors = new ConstructorBinding(type, tp, co.binder);
// ExtensionType types are untracked, so don't Incref() them.
// TODO: deprecate __overloads__ soon...
Runtime.PyDict_SetItemString(dict, "__overloads__", ctors.pyHandle);
Runtime.PyDict_SetItemString(dict, "Overloads", ctors.pyHandle);
Runtime.Py_DecRef(ctors.pyHandle);
}
// don't generate the docstring if one was already set from a DocStringAttribute.
if (!CLRModule._SuppressDocs && doc == IntPtr.Zero)
{
doc = co.GetDocString();
Runtime.PyDict_SetItemString(dict, "__doc__", doc);
Runtime.XDecref(doc);
}
}
}
}
//====================================================================
// Create a new ClassBase-derived instance that implements a reflected
// managed type. The new object will be associated with a generated
// Python type object.
//====================================================================
private static ClassBase CreateClass(Type type)
{
// First, we introspect the managed type and build some class
// information, including generating the member descriptors
// that we'll be putting in the Python class __dict__.
ClassInfo info = GetClassInfo(type);
// Next, select the appropriate managed implementation class.
// Different kinds of types, such as array types or interface
// types, want to vary certain implementation details to make
// sure that the type semantics are consistent in Python.
ClassBase impl;
// Check to see if the given type extends System.Exception. This
// lets us check once (vs. on every lookup) in case we need to
// wrap Exception-derived types in old-style classes
if (type.ContainsGenericParameters)
{
impl = new GenericType(type);
}
else if (type.IsSubclassOf(dtype))
{
impl = new DelegateObject(type);
}
else if (type.IsArray)
{
impl = new ArrayObject(type);
}
else if (type.IsInterface)
{
impl = new InterfaceObject(type);
}
else if (type == typeof(Exception) ||
type.IsSubclassOf(typeof(Exception)))
{
impl = new ExceptionClassObject(type);
}
else if (null != type.GetField("__pyobj__"))
{
impl = new ClassDerivedObject(type);
}
else
{
impl = new ClassObject(type);
}
impl.indexer = info.indexer;
// Now we allocate the Python type object to reflect the given
// managed type, filling the Python type slots with thunks that
// point to the managed methods providing the implementation.
IntPtr tp = TypeManager.GetTypeHandle(impl, type);
impl.tpHandle = tp;
// Finally, initialize the class __dict__ and return the object.
IntPtr dict = Marshal.ReadIntPtr(tp, TypeOffset.tp_dict);
IDictionaryEnumerator iter = info.members.GetEnumerator();
while (iter.MoveNext())
{
ManagedType item = (ManagedType)iter.Value;
string name = (string)iter.Key;
Runtime.PyDict_SetItemString(dict, name, item.pyHandle);
}
// If class has constructors, generate an __doc__ attribute.
IntPtr doc;
Type marker = typeof(DocStringAttribute);
Attribute[] attrs = (Attribute[])type.GetCustomAttributes(marker, false);
if (attrs.Length == 0)
{
doc = IntPtr.Zero;
}
else
{
DocStringAttribute attr = (DocStringAttribute)attrs[0];
string docStr = attr.DocString;
doc = Runtime.PyString_FromString(docStr);
Runtime.PyDict_SetItemString(dict, "__doc__", doc);
Runtime.Decref(doc);
}
ClassObject co = impl as ClassObject;
// If this is a ClassObject AND it has constructors, generate a __doc__ attribute.
// required that the ClassObject.ctors be changed to internal
if (co != null)
{
if (co.ctors.Length > 0)
{
// Implement Overloads on the class object
if (!CLRModule._SuppressOverloads)
{
ConstructorBinding ctors = new ConstructorBinding(type, tp, co.binder);
// ExtensionType types are untracked, so don't Incref() them.
// XXX deprecate __overloads__ soon...
Runtime.PyDict_SetItemString(dict, "__overloads__", ctors.pyHandle);
Runtime.PyDict_SetItemString(dict, "Overloads", ctors.pyHandle);
}
if (!CLRModule._SuppressDocs)
{
doc = co.GetDocString();
Runtime.PyDict_SetItemString(dict, "__doc__", doc);
Runtime.Decref(doc);
}
}
}
return(impl);
}
//====================================================================
// Create a new ClassBase-derived instance that implements a reflected
// managed type. The new object will be associated with a generated
// Python type object.
//====================================================================
private static ClassBase CreateClass(Type type)
{
// First, we introspect the managed type and build some class
// information, including generating the member descriptors
// that we'll be putting in the Python class __dict__.
ClassInfo info = GetClassInfo(type);
// Next, select the appropriate managed implementation class.
// Different kinds of types, such as array types or interface
// types, want to vary certain implementation details to make
// sure that the type semantics are consistent in Python.
ClassBase impl;
// Check to see if the given type extends System.Exception. This
// lets us check once (vs. on every lookup) in case we need to
// wrap Exception-derived types in old-style classes
if (type.IsSubclassOf(dtype))
{
impl = new DelegateObject(type);
}
else if (type.IsArray)
{
impl = new ArrayObject(type);
}
else if (type.IsInterface)
{
impl = new InterfaceObject(type);
}
else
{
impl = new ClassObject(type);
if (type == typeof(Exception) || type.IsSubclassOf(typeof(Exception)))
{
impl.is_exception = true;
}
}
impl.indexer = info.indexer;
// Now we allocate the Python type object to reflect the given
// managed type, filling the Python type slots with thunks that
// point to the managed methods providing the implementation.
IntPtr tp = TypeManager.GetTypeHandle(impl, type);
impl.tpHandle = tp;
// Finally, initialize the class __dict__ and return the object.
IntPtr dict = Marshal.ReadIntPtr(tp, TypeOffset.tp_dict);
IDictionaryEnumerator iter = info.members.GetEnumerator();
while (iter.MoveNext())
{
ManagedType item = (ManagedType)iter.Value;
string name = (string)iter.Key;
Runtime.PyDict_SetItemString(dict, name, item.pyHandle);
}
// If class has constructors, generate an __doc__ attribute.
ClassObject co = impl as ClassObject;
if (co != null)
{
IntPtr doc = co.GetDocString();
Runtime.PyDict_SetItemString(dict, "__doc__", doc);
Runtime.Decref(doc);
}
return(impl);
}
private static void InitClassBase(Type type, ClassBase impl)
{
// First, we introspect the managed type and build some class
// information, including generating the member descriptors
// that we'll be putting in the Python class __dict__.
ClassInfo info = GetClassInfo(type);
impl.indexer = info.indexer;
impl.richcompare = new Dictionary <int, MethodObject>();
// Now we allocate the Python type object to reflect the given
// managed type, filling the Python type slots with thunks that
// point to the managed methods providing the implementation.
IntPtr tp = TypeManager.GetTypeHandle(impl, type);
// Finally, initialize the class __dict__ and return the object.
IntPtr dict = Marshal.ReadIntPtr(tp, TypeOffset.tp_dict);
if (impl.dotNetMembers == null)
{
impl.dotNetMembers = new List <string>();
}
IDictionaryEnumerator iter = info.members.GetEnumerator();
while (iter.MoveNext())
{
var item = (ManagedType)iter.Value;
var name = (string)iter.Key;
impl.dotNetMembers.Add(name);
Runtime.PyDict_SetItemString(dict, name, item.pyHandle);
// Decref the item now that it's been used.
item.DecrRefCount();
if (ClassBase.CilToPyOpMap.TryGetValue(name, out var pyOp))
{
impl.richcompare.Add(pyOp, (MethodObject)item);
}
}
// If class has constructors, generate an __doc__ attribute.
IntPtr doc = IntPtr.Zero;
Type marker = typeof(DocStringAttribute);
var attrs = (Attribute[])type.GetCustomAttributes(marker, false);
if (attrs.Length == 0)
{
doc = IntPtr.Zero;
}
else
{
var attr = (DocStringAttribute)attrs[0];
string docStr = attr.DocString;
doc = Runtime.PyString_FromString(docStr);
Runtime.PyDict_SetItem(dict, PyIdentifier.__doc__, doc);
Runtime.XDecref(doc);
}
var co = impl as ClassObject;
// If this is a ClassObject AND it has constructors, generate a __doc__ attribute.
// required that the ClassObject.ctors be changed to internal
if (co != null)
{
if (co.NumCtors > 0)
{
// Implement Overloads on the class object
if (!CLRModule._SuppressOverloads)
{
var ctors = new ConstructorBinding(type, tp, co.binder);
// ExtensionType types are untracked, so don't Incref() them.
// TODO: deprecate __overloads__ soon...
Runtime.PyDict_SetItem(dict, PyIdentifier.__overloads__, ctors.pyHandle);
Runtime.PyDict_SetItem(dict, PyIdentifier.Overloads, ctors.pyHandle);
ctors.DecrRefCount();
}
// don't generate the docstring if one was already set from a DocStringAttribute.
if (!CLRModule._SuppressDocs && doc == IntPtr.Zero)
{
doc = co.GetDocString();
Runtime.PyDict_SetItem(dict, PyIdentifier.__doc__, doc);
Runtime.XDecref(doc);
}
}
}
// The type has been modified after PyType_Ready has been called
// Refresh the type
Runtime.PyType_Modified(tp);
}