mirror of
https://github.com/microsoft/PowerToys.git
synced 2024-12-13 02:39:22 +08:00
101 lines
4.0 KiB
C#
101 lines
4.0 KiB
C#
// ==========================================================================
|
|
// This software is subject to the provisions of the Zope Public License,
|
|
// Version 2.0 (ZPL). A copy of the ZPL should accompany this distribution.
|
|
// THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
|
|
// WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
|
|
// WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
|
|
// FOR A PARTICULAR PURPOSE.
|
|
// ==========================================================================
|
|
|
|
using System;
|
|
using System.Reflection;
|
|
|
|
namespace Python.Runtime {
|
|
|
|
/// <summary>
|
|
/// Implements reflected generic types. Note that the Python behavior
|
|
/// is the same for both generic type definitions and constructed open
|
|
/// generic types. Both are essentially factories for creating closed
|
|
/// types based on the required generic type parameters.
|
|
/// </summary>
|
|
|
|
internal class GenericType : ClassBase {
|
|
|
|
internal GenericType(Type tp) : base(tp) {}
|
|
|
|
//====================================================================
|
|
// Implements __new__ for reflected generic types.
|
|
//====================================================================
|
|
|
|
public static IntPtr tp_new(IntPtr tp, IntPtr args, IntPtr kw) {
|
|
Exceptions.SetError(Exceptions.TypeError,
|
|
"cannot instantiate an open generic type"
|
|
);
|
|
return IntPtr.Zero;
|
|
}
|
|
|
|
|
|
//====================================================================
|
|
// Implements __call__ for reflected generic types.
|
|
//====================================================================
|
|
|
|
public static IntPtr tp_call(IntPtr ob, IntPtr args, IntPtr kw) {
|
|
Exceptions.SetError(Exceptions.TypeError,
|
|
"object is not callable");
|
|
return IntPtr.Zero;
|
|
}
|
|
|
|
//====================================================================
|
|
// Implements subscript syntax for reflected generic types. A closed
|
|
// type is created by binding the generic type via subscript syntax:
|
|
// inst = List[str]()
|
|
//====================================================================
|
|
|
|
public override IntPtr type_subscript(IntPtr idx) {
|
|
Type[] types = Runtime.PythonArgsToTypeArray(idx);
|
|
if (types == null) {
|
|
return Exceptions.RaiseTypeError("type(s) expected");
|
|
}
|
|
if (!this.type.IsGenericTypeDefinition) {
|
|
return Exceptions.RaiseTypeError(
|
|
"type is not a generic type definition"
|
|
);
|
|
}
|
|
|
|
// This is a little tricky, because an instance of GenericType
|
|
// may represent either a specific generic type, or act as an
|
|
// alias for one or more generic types with the same base name.
|
|
|
|
if (this.type.ContainsGenericParameters) {
|
|
Type[] args = this.type.GetGenericArguments();
|
|
Type target = null;
|
|
|
|
if (args.Length == types.Length) {
|
|
target = this.type;
|
|
}
|
|
else {
|
|
foreach (Type t in
|
|
GenericUtil.GenericsForType(this.type)) {
|
|
if (t.GetGenericArguments().Length == types.Length) {
|
|
target = t;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (target != null) {
|
|
Type t = target.MakeGenericType(types);
|
|
ManagedType c = (ManagedType)ClassManager.GetClass(t);
|
|
Runtime.Incref(c.pyHandle);
|
|
return c.pyHandle;
|
|
}
|
|
return Exceptions.RaiseTypeError("no type matches params");
|
|
}
|
|
|
|
return Exceptions.RaiseTypeError("unsubscriptable object");
|
|
}
|
|
|
|
}
|
|
|
|
}
|