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b15f2eede1
In the same way all GLib.Object-derived classes provided by the generator have a GType static property (i.e. Gtk.Widget), we need the same for the *Adapter classes, to access their GType without having an instance of it. (The first use case would be GStreamerSharp's Gst.Bin.IterateAllByInterface ().) For this, we cannot simply add the property to all adapter classes and be done, because it would clash with a property which is already there, but is non-static, that has the same name and same value (this property is needed for complying GInterfaceAdapter abstract class), so we rename this property to GInterfaceGType because using this name for the static one would not be consistent with the rest of the classes generated which already provide the static one with the name "GType".
400 lines
12 KiB
C#
400 lines
12 KiB
C#
// GtkSharp.Generation.InterfaceGen.cs - The Interface Generatable.
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//
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// Authors:
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// Mike Kestner <mkestner@speakeasy.net>
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// Andres G. Aragoneses <knocte@gmail.com>
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//
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// Copyright (c) 2001-2003 Mike Kestner
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// Copyright (c) 2004, 2007 Novell, Inc.
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// Copyright (c) 2013 Andres G. Aragoneses
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//
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// This program is free software; you can redistribute it and/or
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// modify it under the terms of version 2 of the GNU General Public
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// License as published by the Free Software Foundation.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// General Public License for more details.
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//
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// You should have received a copy of the GNU General Public
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// License along with this program; if not, write to the
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// Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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// Boston, MA 02111-1307, USA.
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namespace GtkSharp.Generation {
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using System;
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using System.Collections.Generic;
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using System.IO;
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using System.Xml;
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public class InterfaceGen : ObjectBase {
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bool consume_only;
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public InterfaceGen (XmlElement ns, XmlElement elem) : base (ns, elem, true)
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{
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consume_only = elem.GetAttributeAsBoolean ("consume_only");
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foreach (XmlNode node in elem.ChildNodes) {
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if (!(node is XmlElement)) continue;
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XmlElement member = (XmlElement) node;
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switch (member.Name) {
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case "signal":
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object sig = sigs [member.GetAttribute ("name")];
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if (sig == null)
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sig = new Signal (node as XmlElement, this);
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break;
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default:
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if (!base.IsNodeNameHandled (node.Name))
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new LogWriter (QualifiedName).Warn ("Unexpected node " + node.Name);
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break;
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}
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}
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}
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public bool IsConsumeOnly {
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get {
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return consume_only;
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}
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}
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public string AdapterName {
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get {
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return base.Name + "Adapter";
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}
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}
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public string QualifiedAdapterName {
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get {
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return NS + "." + AdapterName;
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}
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}
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public string ImplementorName {
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get {
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return Name + "Implementor";
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}
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}
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public override string Name {
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get {
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return "I" + base.Name;
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}
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}
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public override string CallByName (string var, bool owned)
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{
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return String.Format (
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"{0} == null ? IntPtr.Zero : (({0} is GLib.Object) ? ({0} as GLib.Object).{1} : ({0} as {2}).{1})",
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var, owned ? "OwnedHandle" : "Handle", QualifiedAdapterName);
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}
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public override string FromNative (string var, bool owned)
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{
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return QualifiedAdapterName + ".GetObject (" + var + ", " + (owned ? "true" : "false") + ")";
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}
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public override bool ValidateForSubclass ()
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{
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if (!base.ValidateForSubclass ())
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return false;
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LogWriter log = new LogWriter (QualifiedName);
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var invalids = new List<Method> ();
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foreach (Method method in Methods.Values) {
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if (!method.Validate (log))
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invalids.Add (method);
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}
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foreach (Method method in invalids)
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Methods.Remove (method.Name);
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invalids.Clear ();
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return true;
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}
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void GenerateStaticCtor (StreamWriter sw)
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{
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sw.WriteLine ("\t\tstatic {0} iface;", class_struct_name);
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sw.WriteLine ();
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sw.WriteLine ("\t\tstatic " + AdapterName + " ()");
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sw.WriteLine ("\t\t{");
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sw.WriteLine ("\t\t\tGLib.GType.Register (_gtype, typeof ({0}));", AdapterName);
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foreach (InterfaceVM vm in interface_vms) {
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if (vm.Validate (new LogWriter (QualifiedName)))
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sw.WriteLine ("\t\t\tiface.{0} = new {0}NativeDelegate ({0}_cb);", vm.Name);
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}
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sw.WriteLine ("\t\t}");
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sw.WriteLine ();
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}
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void GenerateInitialize (StreamWriter sw)
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{
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if (interface_vms.Count > 0) {
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sw.WriteLine ("\t\tstatic int class_offset = 2 * IntPtr.Size;"); // Class size of GTypeInterface struct
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sw.WriteLine ();
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}
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sw.WriteLine ("\t\tstatic void Initialize (IntPtr ptr, IntPtr data)");
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sw.WriteLine ("\t\t{");
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if (interface_vms.Count > 0) {
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sw.WriteLine ("\t\t\tIntPtr ifaceptr = new IntPtr (ptr.ToInt64 () + class_offset);");
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sw.WriteLine ("\t\t\t{0} native_iface = ({0}) Marshal.PtrToStructure (ifaceptr, typeof ({0}));", class_struct_name);
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foreach (InterfaceVM vm in interface_vms) {
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sw.WriteLine ("\t\t\tnative_iface." + vm.Name + " = iface." + vm.Name + ";");
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}
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sw.WriteLine ("\t\t\tMarshal.StructureToPtr (native_iface, ifaceptr, false);");
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}
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sw.WriteLine ("\t\t}");
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sw.WriteLine ();
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}
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void GenerateCallbacks (StreamWriter sw)
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{
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foreach (InterfaceVM vm in interface_vms) {
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vm.GenerateCallback (sw, null);
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}
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}
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void GenerateCtors (StreamWriter sw)
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{
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// Native GObjects do not implement the *Implementor interfaces
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sw.WriteLine ("\t\tGLib.Object implementor;", Name);
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sw.WriteLine ();
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if (!IsConsumeOnly) {
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sw.WriteLine ("\t\tpublic " + AdapterName + " ()");
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sw.WriteLine ("\t\t{");
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sw.WriteLine ("\t\t\tInitHandler = new GLib.GInterfaceInitHandler (Initialize);");
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sw.WriteLine ("\t\t}");
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sw.WriteLine ();
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sw.WriteLine ("\t\tpublic {0} ({1} implementor)", AdapterName, ImplementorName);
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sw.WriteLine ("\t\t{");
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sw.WriteLine ("\t\t\tif (implementor == null)");
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sw.WriteLine ("\t\t\t\tthrow new ArgumentNullException (\"implementor\");");
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sw.WriteLine ("\t\t\telse if (!(implementor is GLib.Object))");
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sw.WriteLine ("\t\t\t\tthrow new ArgumentException (\"implementor must be a subclass of GLib.Object\");");
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sw.WriteLine ("\t\t\tthis.implementor = implementor as GLib.Object;");
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sw.WriteLine ("\t\t}");
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sw.WriteLine ();
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}
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sw.WriteLine ("\t\tpublic " + AdapterName + " (IntPtr handle)");
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sw.WriteLine ("\t\t{");
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sw.WriteLine ("\t\t\tif (!_gtype.IsInstance (handle))");
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sw.WriteLine ("\t\t\t\tthrow new ArgumentException (\"The gobject doesn't implement the GInterface of this adapter\", \"handle\");");
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sw.WriteLine ("\t\t\timplementor = GLib.Object.GetObject (handle);");
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sw.WriteLine ("\t\t}");
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sw.WriteLine ();
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}
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void GenerateGType (StreamWriter sw)
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{
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Method m = GetMethod ("GetType");
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if (m == null)
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throw new Exception ("Interface " + QualifiedName + " missing GetType method.");
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m.GenerateImport (sw);
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sw.WriteLine ("\t\tprivate static GLib.GType _gtype = new GLib.GType ({0} ());", m.CName);
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sw.WriteLine ();
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// by convention, all GTypes generated have a static GType property
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sw.WriteLine ("\t\tpublic static GLib.GType GType {");
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sw.WriteLine ("\t\t\tget {");
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sw.WriteLine ("\t\t\t\treturn _gtype;");
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sw.WriteLine ("\t\t\t}");
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sw.WriteLine ("\t\t}");
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sw.WriteLine ();
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// we need same property but non-static, because it is being accessed via a GInterfaceAdapter instance
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sw.WriteLine ("\t\tpublic override GLib.GType GInterfaceGType {");
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sw.WriteLine ("\t\t\tget {");
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sw.WriteLine ("\t\t\t\treturn _gtype;");
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sw.WriteLine ("\t\t\t}");
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sw.WriteLine ("\t\t}");
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sw.WriteLine ();
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}
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void GenerateHandleProp (StreamWriter sw)
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{
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sw.WriteLine ("\t\tpublic override IntPtr Handle {");
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sw.WriteLine ("\t\t\tget {");
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sw.WriteLine ("\t\t\t\treturn implementor.Handle;");
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sw.WriteLine ("\t\t\t}");
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sw.WriteLine ("\t\t}");
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sw.WriteLine ();
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sw.WriteLine ("\t\tpublic IntPtr OwnedHandle {");
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sw.WriteLine ("\t\t\tget {");
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sw.WriteLine ("\t\t\t\treturn implementor.OwnedHandle;");
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sw.WriteLine ("\t\t\t}");
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sw.WriteLine ("\t\t}");
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sw.WriteLine ();
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}
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void GenerateGetObject (StreamWriter sw)
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{
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sw.WriteLine ("\t\tpublic static " + Name + " GetObject (IntPtr handle, bool owned)");
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sw.WriteLine ("\t\t{");
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sw.WriteLine ("\t\t\tGLib.Object obj = GLib.Object.GetObject (handle, owned);");
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sw.WriteLine ("\t\t\treturn GetObject (obj);");
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sw.WriteLine ("\t\t}");
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sw.WriteLine ();
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sw.WriteLine ("\t\tpublic static " + Name + " GetObject (GLib.Object obj)");
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sw.WriteLine ("\t\t{");
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sw.WriteLine ("\t\t\tif (obj == null)");
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sw.WriteLine ("\t\t\t\treturn null;");
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if (!IsConsumeOnly) {
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sw.WriteLine ("\t\t\telse if (obj is " + ImplementorName + ")");
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sw.WriteLine ("\t\t\t\treturn new {0} (obj as {1});", AdapterName, ImplementorName);
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}
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sw.WriteLine ("\t\t\telse if (obj as " + Name + " == null)");
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sw.WriteLine ("\t\t\t\treturn new {0} (obj.Handle);", AdapterName);
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sw.WriteLine ("\t\t\telse");
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sw.WriteLine ("\t\t\t\treturn obj as {0};", Name);
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sw.WriteLine ("\t\t}");
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sw.WriteLine ();
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}
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void GenerateImplementorProp (StreamWriter sw)
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{
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sw.WriteLine ("\t\tpublic " + ImplementorName + " Implementor {");
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sw.WriteLine ("\t\t\tget {");
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sw.WriteLine ("\t\t\t\treturn implementor as {0};", ImplementorName);
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sw.WriteLine ("\t\t\t}");
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sw.WriteLine ("\t\t}");
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sw.WriteLine ();
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}
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void GenerateAdapter (GenerationInfo gen_info)
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{
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StreamWriter sw = gen_info.Writer = gen_info.OpenStream (AdapterName);
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sw.WriteLine ("namespace " + NS + " {");
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sw.WriteLine ();
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sw.WriteLine ("\tusing System;");
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sw.WriteLine ("\tusing System.Runtime.InteropServices;");
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sw.WriteLine ();
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sw.WriteLine ("#region Autogenerated code");
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sw.WriteLine ("\tpublic partial class " + AdapterName + " : GLib.GInterfaceAdapter, " + QualifiedName + " {");
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sw.WriteLine ();
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if (!IsConsumeOnly) {
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GenerateClassStruct (gen_info);
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GenerateStaticCtor (sw);
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GenerateCallbacks (sw);
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GenerateInitialize (sw);
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}
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GenerateCtors (sw);
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GenerateGType (sw);
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GenerateHandleProp (sw);
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GenerateGetObject (sw);
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if (!IsConsumeOnly)
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GenerateImplementorProp (sw);
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GenProperties (gen_info, null);
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foreach (Signal sig in sigs.Values)
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sig.GenEvent (sw, null, "GLib.Object.GetObject (Handle)");
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Method temp = GetMethod ("GetType");
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if (temp != null)
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Methods.Remove ("GetType");
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GenMethods (gen_info, null, this);
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if (temp != null)
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Methods ["GetType"] = temp;
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sw.WriteLine ("#endregion");
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sw.WriteLine ("\t}");
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sw.WriteLine ("}");
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sw.Close ();
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gen_info.Writer = null;
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}
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void GenerateImplementorIface (GenerationInfo gen_info)
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{
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if (IsConsumeOnly)
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return;
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StreamWriter sw = gen_info.Writer;
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sw.WriteLine ();
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sw.WriteLine ("\t[GLib.GInterface (typeof (" + AdapterName + "))]");
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string access = IsInternal ? "internal" : "public";
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sw.WriteLine ("\t" + access + " partial interface " + ImplementorName + " : GLib.IWrapper {");
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sw.WriteLine ();
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var vm_table = new Dictionary<string, InterfaceVM> ();
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foreach (InterfaceVM vm in interface_vms) {
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vm_table [vm.Name] = vm;
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}
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foreach (InterfaceVM vm in interface_vms) {
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if (!vm_table.ContainsKey (vm.Name)) {
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continue;
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} else if (!vm.Validate (new LogWriter (QualifiedName))) {
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vm_table.Remove (vm.Name);
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continue;
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} else if (vm.IsGetter || vm.IsSetter) {
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string cmp_name = (vm.IsGetter ? "Set" : "Get") + vm.Name.Substring (3);
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InterfaceVM cmp = null;
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if (vm_table.TryGetValue (cmp_name, out cmp) && (cmp.IsGetter || cmp.IsSetter)) {
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if (vm.IsSetter)
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cmp.GenerateDeclaration (sw, vm);
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else
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vm.GenerateDeclaration (sw, cmp);
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vm_table.Remove (cmp.Name);
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} else
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vm.GenerateDeclaration (sw, null);
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vm_table.Remove (vm.Name);
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} else {
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vm.GenerateDeclaration (sw, null);
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vm_table.Remove (vm.Name);
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}
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}
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foreach (Property prop in Properties.Values) {
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sw.WriteLine ("\t\t[GLib.Property (\"" + prop.CName + "\")]");
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prop.GenerateDecl (sw, "\t\t");
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}
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sw.WriteLine ("\t}");
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}
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public override void Generate (GenerationInfo gen_info)
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{
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GenerateAdapter (gen_info);
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StreamWriter sw = gen_info.Writer = gen_info.OpenStream (Name);
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sw.WriteLine ("namespace " + NS + " {");
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sw.WriteLine ();
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sw.WriteLine ("\tusing System;");
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sw.WriteLine ();
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sw.WriteLine ("#region Autogenerated code");
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string access = IsInternal ? "internal" : "public";
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sw.WriteLine ("\t" + access + " partial interface " + Name + " : GLib.IWrapper {");
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sw.WriteLine ();
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foreach (Signal sig in sigs.Values) {
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sig.GenerateDecl (sw);
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sig.GenEventHandler (gen_info);
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}
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foreach (Method method in Methods.Values) {
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if (IgnoreMethod (method, this))
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continue;
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method.GenerateDecl (sw);
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}
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foreach (Property prop in Properties.Values)
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prop.GenerateDecl (sw, "\t\t");
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sw.WriteLine ("\t}");
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GenerateImplementorIface (gen_info);
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sw.WriteLine ("#endregion");
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sw.WriteLine ("}");
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sw.Close ();
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gen_info.Writer = null;
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Statistics.IFaceCount++;
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}
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}
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}
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