pythonnet-rawsvnmig/pythonnet/src/runtime/overload.cs at master · pythonnet/pythonnet-rawsvnmig · GitHub

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// ==========================================================================

// 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 {

//========================================================================

// Implements the __overloads__ attribute of method objects. This object

// supports the [] syntax to explicitly select an overload by signature.

//========================================================================

internal class OverloadMapper : ExtensionType {

MethodObject m;

IntPtr target;

public OverloadMapper(MethodObject m, IntPtr target) : base() {

Runtime.Incref(target);

this.target = target;

this.m = m;

}

//====================================================================

// Implement explicit overload selection using subscript syntax ([]).

//====================================================================

public static IntPtr mp_subscript(IntPtr tp, IntPtr idx) {

OverloadMapper self = (OverloadMapper)GetManagedObject(tp);

// Note: if the type provides a non-generic method with N args

// and a generic method that takes N params, then we always

// prefer the non-generic version in doing overload selection.

Type[] types = Runtime.PythonArgsToTypeArray(idx);

if (types == null) {

return Exceptions.RaiseTypeError("type(s) expected");

}

MethodInfo mi = MethodBinder.MatchSignature(self.m.info, types);

if (mi == null) {

string e = "No match found for signature";

return Exceptions.RaiseTypeError(e);

}

MethodBinding mb = new MethodBinding(self.m, self.target);

mb.info = mi;

Runtime.Incref(mb.pyHandle);

return mb.pyHandle;

}

//====================================================================

// OverloadMapper __repr__ implementation.

//====================================================================

public static IntPtr tp_repr(IntPtr op) {

OverloadMapper self = (OverloadMapper)GetManagedObject(op);

IntPtr doc = self.m.GetDocString();

Runtime.Incref(doc);

return doc;

}

//====================================================================

// OverloadMapper dealloc implementation.

//====================================================================

public static new void tp_dealloc(IntPtr ob) {

OverloadMapper self = (OverloadMapper)GetManagedObject(ob);

Runtime.Decref(self.target);

ExtensionType.FinalizeObject(self);

}

pythonnet-rawsvnmig/pythonnet/src/runtime/overload.cs at master · pythonnet/pythonnet-rawsvnmig · GitHub

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