GtkSharp/generator/ByRefGen.cs
Mike Kestner 9f780a56b2 2007-09-21 Mike Kestner <mkestner@novell.com>
* generator/*.cs: add DefaultValue prop for obtaining a
	sane value when we need to return a value but something bad has 
	happened such that we can't get a real value.  Needed for iface
	signal marshaling, among other places we're partially working 
	around it now.

svn path=/trunk/gtk-sharp/; revision=86157
2007-09-21 16:37:04 +00:00

64 lines
1.8 KiB
C#

// GtkSharp.Generation.ByRefGen.cs - The ByRef type Generatable.
//
// Author: Mike Kestner <mkestner@novell.com>
//
// Copyright (c) 2003 Mike Kestner
// Copyright (c) 2004 Novell, Inc.
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of version 2 of the GNU General Public
// License as published by the Free Software Foundation.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// General Public License for more details.
//
// You should have received a copy of the GNU General Public
// License along with this program; if not, write to the
// Free Software Foundation, Inc., 59 Temple Place - Suite 330,
// Boston, MA 02111-1307, USA.
namespace GtkSharp.Generation {
using System;
public class ByRefGen : SimpleBase, IManualMarshaler {
public ByRefGen (string ctype, string type) : base (ctype, type, type + ".Empty") {}
public override string MarshalType {
get {
return "IntPtr";
}
}
public override string CallByName (string var_name)
{
return "native_" + var_name;
}
public string AllocNative ()
{
return "Marshal.AllocHGlobal (Marshal.SizeOf (typeof (" + QualifiedName + ")))";
}
public string AllocNative (string var_name)
{
return "GLib.Marshaller.StructureToPtrAlloc (" + var_name + ")";
}
public override string FromNative (string var_name)
{
return String.Format ("({0}) Marshal.PtrToStructure ({1}, typeof ({0}))", QualifiedName, var_name);
}
public string ReleaseNative (string var_name)
{
return "GLib.Marshaller.Free (" + var_name + ")";
}
}
}