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https://github.com/microsoft/PowerToys.git
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62 lines
2.1 KiB
C#
62 lines
2.1 KiB
C#
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// ==========================================================================
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// This software is subject to the provisions of the Zope Public License,
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// Version 2.0 (ZPL). A copy of the ZPL should accompany this distribution.
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// THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
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// WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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// WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
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// FOR A PARTICULAR PURPOSE.
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// ==========================================================================
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using System;
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using System.Collections;
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using System.Runtime.InteropServices;
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namespace Python.Runtime {
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/// <summary>
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/// A MethodWrapper wraps a static method of a managed type,
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/// making it callable by Python as a PyCFunction object. This is
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/// currently used mainly to implement special cases like the CLR
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/// import hook.
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/// </summary>
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internal class MethodWrapper {
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public IntPtr mdef;
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public IntPtr ptr;
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public MethodWrapper(Type type, string name) {
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// Turn the managed method into a function pointer
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IntPtr fp = Interop.GetThunk(type.GetMethod(name));
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// XXX - here we create a Python string object, then take the
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// char * of the internal string to pass to our methoddef
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// structure. Its a hack, and the name is leaked!
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IntPtr ps = Runtime.PyString_FromString(name);
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IntPtr sp = Runtime.PyString_AS_STRING(ps);
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// Allocate and initialize a PyMethodDef structure to represent
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// the managed method, then create a PyCFunction.
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mdef = Runtime.PyMem_Malloc(4 * IntPtr.Size);
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Marshal.WriteIntPtr(mdef, sp);
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Marshal.WriteIntPtr(mdef, (1 * IntPtr.Size), fp);
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Marshal.WriteIntPtr(mdef, (2 * IntPtr.Size), (IntPtr)0x0002);
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Marshal.WriteIntPtr(mdef, (3 * IntPtr.Size), IntPtr.Zero);
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ptr = Runtime.PyCFunction_New(mdef, IntPtr.Zero);
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}
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public IntPtr Call(IntPtr args, IntPtr kw) {
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return Runtime.PyCFunction_Call(ptr, args, kw);
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}
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}
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}
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