mirror of
https://github.com/Ryujinx/GtkSharp.git
synced 2024-09-16 11:34:47 +02:00
7d611f77e4
Patch from Christian Hoff with a few minor tweaks. * generator/CallbackGen.cs: refactor to use ManagedCallString and drop a ton of redundant, half-baked code. * generator/ManagedCallString.cs: add Unconditional setup method for stuff that has to happen before the try block. Add "drop_first" concept so it can be reused by CallbackGen which doesn't drop first params. * generator/Signal.cs: use Unconditional method for prep. * generator/VirtualMethod.cs: use Unconditional method for prep. * gtk/Gtk.metadata: mark a ref param. [Fixes #394352] svn path=/trunk/gtk-sharp/; revision=107494
476 lines
18 KiB
C#
476 lines
18 KiB
C#
// GtkSharp.Generation.Signal.cs - The Signal Generatable.
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//
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// Author: Mike Kestner <mkestner@speakeasy.net>
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//
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// Copyright (c) 2001-2003 Mike Kestner
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// Copyright (c) 2003-2005 Novell, Inc.
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// Copyright (c) 2007 Novell, Inc.
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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;
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using System.IO;
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using System.Xml;
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public class Signal {
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private string name;
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private XmlElement elem;
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private ReturnValue retval;
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private Parameters parms;
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private ClassBase container_type;
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public Signal (XmlElement elem, ClassBase container_type)
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{
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this.elem = elem;
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name = elem.GetAttribute ("name");
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retval = new ReturnValue (elem ["return-type"]);
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parms = new Parameters (elem["parameters"]);
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this.container_type = container_type;
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}
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public string Name {
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get {
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return name;
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}
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set {
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name = value;
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}
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}
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public bool Validate ()
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{
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if (Name == "") {
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Console.Write ("Nameless signal ");
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Statistics.ThrottledCount++;
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return false;
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}
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if (!parms.Validate () || !retval.Validate ()) {
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Console.Write (" in signal " + Name + " ");
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Statistics.ThrottledCount++;
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return false;
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}
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return true;
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}
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public void GenerateDecl (StreamWriter sw)
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{
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if (elem.HasAttribute("new_flag") || (container_type != null && container_type.GetSignalRecursively (Name) != null))
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sw.Write("new ");
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sw.WriteLine ("\t\tevent " + EventHandlerQualifiedName + " " + Name + ";");
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}
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public string CName {
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get {
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return "\"" + elem.GetAttribute("cname") + "\"";
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}
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}
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private string EventArgsName {
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get {
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if (IsEventHandler)
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return "EventArgs";
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else
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return Name + "Args";
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}
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}
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private string EventArgsQualifiedName {
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get {
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if (IsEventHandler)
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return "System.EventArgs";
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else
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return container_type.NS + "." + Name + "Args";
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}
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}
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private string EventHandlerName {
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get {
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if (IsEventHandler)
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return "EventHandler";
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else if (SymbolTable.Table [container_type.NS + Name + "Handler"] != null)
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return Name + "EventHandler";
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else
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return Name + "Handler";
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}
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}
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private string EventHandlerQualifiedName {
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get {
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if (IsEventHandler)
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return "System.EventHandler";
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else
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return container_type.NS + "." + EventHandlerName;
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}
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}
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string ClassFieldName {
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get {
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return elem.HasAttribute ("field_name") ? elem.GetAttribute("field_name") : String.Empty;
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}
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}
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private bool HasOutParams {
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get {
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foreach (Parameter p in parms) {
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if (p.PassAs == "out")
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return true;
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}
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return false;
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}
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}
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private bool IsEventHandler {
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get {
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return retval.CSType == "void" && parms.Count == 1 && (parms [0].Generatable is ObjectGen || parms [0].Generatable is InterfaceGen);
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}
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}
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private bool IsVoid {
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get {
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return retval.CSType == "void";
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}
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}
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private string ReturnGType {
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get {
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IGeneratable igen = SymbolTable.Table [retval.CType];
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if (igen is ObjectGen)
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return "GLib.GType.Object";
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if (igen is BoxedGen)
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return retval.CSType + ".GType";
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if (igen is EnumGen)
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return retval.CSType + "GType.GType";
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switch (retval.CSType) {
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case "bool":
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return "GLib.GType.Boolean";
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case "string":
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return "GLib.GType.String";
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case "int":
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return "GLib.GType.Int";
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default:
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throw new Exception (retval.CSType);
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}
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}
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}
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private bool NeedNew (ClassBase implementor)
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{
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return elem.HasAttribute ("new_flag") ||
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(container_type != null && container_type.GetSignalRecursively (Name) != null) ||
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(implementor != null && implementor.GetSignalRecursively (Name) != null);
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}
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public void GenEventHandler (GenerationInfo gen_info)
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{
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if (IsEventHandler)
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return;
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string ns = container_type.NS;
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StreamWriter sw = gen_info.OpenStream (EventHandlerName);
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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 ("\tpublic delegate void " + EventHandlerName + "(object o, " + EventArgsName + " args);");
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sw.WriteLine ();
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sw.WriteLine ("\tpublic class " + EventArgsName + " : GLib.SignalArgs {");
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for (int i = 1; i < parms.Count; i++) {
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sw.WriteLine ("\t\tpublic " + parms[i].CSType + " " + parms[i].StudlyName + "{");
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if (parms[i].PassAs != "out") {
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sw.WriteLine ("\t\t\tget {");
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sw.WriteLine ("\t\t\t\treturn (" + parms[i].CSType + ") Args[" + (i - 1) + "];");
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sw.WriteLine ("\t\t\t}");
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}
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if (parms[i].PassAs != "") {
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sw.WriteLine ("\t\t\tset {");
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sw.WriteLine ("\t\t\t\tArgs[" + (i - 1) + "] = (" + parms[i].CSType + ")value;");
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sw.WriteLine ("\t\t\t}");
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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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sw.WriteLine ("\t}");
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sw.WriteLine ("}");
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sw.Close ();
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}
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private void GenVMDeclaration (StreamWriter sw, ClassBase implementor)
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{
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VMSignature vmsig = new VMSignature (parms);
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sw.WriteLine ("\t\t[GLib.DefaultSignalHandler(Type=typeof(" + (implementor != null ? implementor.QualifiedName : container_type.QualifiedName) + "), ConnectionMethod=\"Override" + Name +"\")]");
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sw.Write ("\t\tprotected ");
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if (NeedNew (implementor))
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sw.Write ("new ");
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sw.WriteLine ("virtual {0} {1} ({2})", retval.CSType, "On" + Name, vmsig.ToString ());
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}
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private string CastFromInt (string type)
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{
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return type != "int" ? "(" + type + ") " : "";
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}
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private string GlueCallString {
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get {
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string result = "Handle";
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for (int i = 1; i < parms.Count; i++) {
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Parameter p = parms [i];
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IGeneratable igen = p.Generatable;
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if (i > 1 && parms [i - 1].IsString && p.IsLength && p.PassAs == String.Empty) {
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string string_name = parms [i - 1].Name;
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result += ", " + igen.CallByName (CastFromInt (p.CSType) + "System.Text.Encoding.UTF8.GetByteCount (" + string_name + ")");
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continue;
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}
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p.CallName = p.Name;
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string call_parm = p.CallString;
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if (p.IsUserData && parms.IsHidden (p) && !parms.HideData && (i == 1 || parms [i - 1].Scope != "notified")) {
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call_parm = "IntPtr.Zero";
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}
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result += ", " + call_parm;
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}
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return result;
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}
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}
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private string GlueSignature {
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get {
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string result = String.Empty;
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for (int i = 0; i < parms.Count; i++)
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result += parms[i].CType.Replace ("const-", "const ") + " " + parms[i].Name + (i == parms.Count-1 ? "" : ", ");
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return result;
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}
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}
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private string DefaultGlueValue {
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get {
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string val = retval.DefaultValue;
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switch (val) {
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case "null":
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return "NULL";
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case "false":
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return "FALSE";
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case "true":
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return "TRUE";
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default:
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return val;
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}
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}
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}
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private void GenGlueVirtualMethod (GenerationInfo gen_info)
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{
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StreamWriter glue = gen_info.GlueWriter;
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string glue_name = String.Format ("{0}sharp_{1}_base_{2}", container_type.NS.ToLower ().Replace (".", "_"), container_type.Name.ToLower (), ClassFieldName);
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glue.WriteLine ("{0} {1} ({2});\n", retval.CType, glue_name, GlueSignature);
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glue.WriteLine ("{0}\n{1} ({2})", retval.CType, glue_name, GlueSignature);
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glue.WriteLine ("{");
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glue.WriteLine ("\t{0}Class *klass = ({0}Class *) get_threshold_class (G_OBJECT ({1}));", container_type.CName, parms[0].Name);
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glue.Write ("\tif (klass->{0})\n\t\t", ClassFieldName);
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if (!IsVoid)
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glue.Write ("return ");
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glue.Write ("(* klass->{0}) (", ClassFieldName);
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for (int i = 0; i < parms.Count; i++)
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glue.Write (parms[i].Name + (i == parms.Count - 1 ? "" : ", "));
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glue.WriteLine (");");
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if (!IsVoid)
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glue.WriteLine ("\treturn " + DefaultGlueValue + ";");
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glue.WriteLine ("}");
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StreamWriter sw = gen_info.Writer;
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sw.WriteLine ("\t\t[DllImport (\"{0}\")]", gen_info.GluelibName);
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sw.WriteLine ("\t\tstatic extern {0} {1} ({2});\n", retval.MarshalType, glue_name, parms.ImportSignature);
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GenVMDeclaration (sw, null);
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sw.WriteLine ("\t\t{");
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MethodBody body = new MethodBody (parms);
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body.Initialize (gen_info, false, false, String.Empty);
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sw.WriteLine ("\t\t\t{0}{1} ({2});", IsVoid ? "" : retval.MarshalType + " __ret = ", glue_name, GlueCallString);
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body.Finish (sw, "");
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if (!IsVoid)
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sw.WriteLine ("\t\t\treturn {0};", retval.FromNative ("__ret"));
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sw.WriteLine ("\t\t}\n");
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}
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private void GenChainVirtualMethod (StreamWriter sw, ClassBase implementor)
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{
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GenVMDeclaration (sw, implementor);
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sw.WriteLine ("\t\t{");
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if (IsVoid)
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sw.WriteLine ("\t\t\tGLib.Value ret = GLib.Value.Empty;");
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else
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sw.WriteLine ("\t\t\tGLib.Value ret = new GLib.Value (" + ReturnGType + ");");
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sw.WriteLine ("\t\t\tGLib.ValueArray inst_and_params = new GLib.ValueArray (" + parms.Count + ");");
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sw.WriteLine ("\t\t\tGLib.Value[] vals = new GLib.Value [" + parms.Count + "];");
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sw.WriteLine ("\t\t\tvals [0] = new GLib.Value (this);");
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sw.WriteLine ("\t\t\tinst_and_params.Append (vals [0]);");
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string cleanup = "";
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for (int i = 1; i < parms.Count; i++) {
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Parameter p = parms [i];
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if (p.PassAs != "") {
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if (SymbolTable.Table.IsBoxed (p.CType)) {
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if (p.PassAs == "ref")
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sw.WriteLine ("\t\t\tvals [" + i + "] = new GLib.Value (" + p.Name + ");");
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else
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sw.WriteLine ("\t\t\tvals [" + i + "] = new GLib.Value ((GLib.GType)typeof (" + p.CSType + "));");
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cleanup += "\t\t\t" + p.Name + " = (" + p.CSType + ") vals [" + i + "];\n";
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} else {
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if (p.PassAs == "ref")
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sw.WriteLine ("\t\t\tIntPtr " + p.Name + "_ptr = GLib.Marshaller.StructureToPtrAlloc (" + p.Generatable.CallByName (p.Name) + ");");
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else
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sw.WriteLine ("\t\t\tIntPtr " + p.Name + "_ptr = Marshal.AllocHGlobal (Marshal.SizeOf (typeof (" + p.MarshalType + ")));");
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sw.WriteLine ("\t\t\tvals [" + i + "] = new GLib.Value (" + p.Name + "_ptr);");
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cleanup += "\t\t\t" + p.Name + " = " + p.FromNative ("(" + p.MarshalType + ") Marshal.PtrToStructure (" + p.Name + "_ptr, typeof (" + p.MarshalType + "))") + ";\n";
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cleanup += "\t\t\tMarshal.FreeHGlobal (" + p.Name + "_ptr);\n";
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}
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} else if (p.IsLength && parms [i - 1].IsString)
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sw.WriteLine ("\t\t\tvals [" + i + "] = new GLib.Value (System.Text.Encoding.UTF8.GetByteCount (" + parms [i-1].Name + "));");
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else
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sw.WriteLine ("\t\t\tvals [" + i + "] = new GLib.Value (" + p.Name + ");");
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sw.WriteLine ("\t\t\tinst_and_params.Append (vals [" + i + "]);");
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}
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sw.WriteLine ("\t\t\tg_signal_chain_from_overridden (inst_and_params.ArrayPtr, ref ret);");
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if (cleanup != "")
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sw.WriteLine (cleanup);
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sw.WriteLine ("\t\t\tforeach (GLib.Value v in vals)");
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sw.WriteLine ("\t\t\t\tv.Dispose ();");
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if (!IsVoid) {
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IGeneratable igen = SymbolTable.Table [retval.CType];
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sw.WriteLine ("\t\t\t" + retval.CSType + " result = (" + (igen is EnumGen ? retval.CSType + ") (Enum" : retval.CSType) + ") ret;");
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sw.WriteLine ("\t\t\tret.Dispose ();");
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sw.WriteLine ("\t\t\treturn result;");
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}
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sw.WriteLine ("\t\t}\n");
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}
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private void GenDefaultHandlerDelegate (GenerationInfo gen_info, ClassBase implementor)
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{
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StreamWriter sw = gen_info.Writer;
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StreamWriter glue;
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bool use_glue = gen_info.GlueEnabled && implementor == null && ClassFieldName.Length > 0;
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string glue_name = String.Empty;
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ManagedCallString call = new ManagedCallString (parms, true);
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sw.WriteLine ("\t\t[GLib.CDeclCallback]");
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sw.WriteLine ("\t\tdelegate " + retval.ToNativeType + " " + Name + "VMDelegate (" + parms.ImportSignature + ");\n");
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if (use_glue) {
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glue = gen_info.GlueWriter;
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glue_name = String.Format ("{0}sharp_{1}_override_{2}", container_type.NS.ToLower ().Replace (".", "_"), container_type.Name.ToLower (), ClassFieldName);
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sw.WriteLine ("\t\t[DllImport (\"{0}\")]", gen_info.GluelibName);
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sw.WriteLine ("\t\tstatic extern void {0} (IntPtr gtype, {1}VMDelegate cb);\n", glue_name, Name);
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glue.WriteLine ("void {0} (GType gtype, gpointer cb);\n", glue_name);
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glue.WriteLine ("void\n{0} (GType gtype, gpointer cb)", glue_name);
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glue.WriteLine ("{");
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glue.WriteLine ("\tGObjectClass *klass = g_type_class_peek (gtype);");
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glue.WriteLine ("\tif (klass == NULL)");
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glue.WriteLine ("\t\tklass = g_type_class_ref (gtype);");
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glue.WriteLine ("\t(({0} *)klass)->{1} = cb;", container_type.CName + "Class", ClassFieldName);
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glue.WriteLine ("}\n");
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}
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sw.WriteLine ("\t\tstatic {0} {1};\n", Name + "VMDelegate", Name + "VMCallback");
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sw.WriteLine ("\t\tstatic " + retval.ToNativeType + " " + Name.ToLower() + "_cb (" + parms.ImportSignature + ")");
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sw.WriteLine ("\t\t{");
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string unconditional = call.Unconditional ("\t\t\t");
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if (unconditional.Length > 0)
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sw.WriteLine (unconditional);
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sw.WriteLine ("\t\t\ttry {");
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sw.WriteLine ("\t\t\t\t{0} {1}_managed = GLib.Object.GetObject ({1}, false) as {0};", implementor != null ? implementor.Name : container_type.Name, parms[0].Name);
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sw.Write (call.Setup ("\t\t\t\t"));
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sw.Write ("\t\t\t\t{0}", IsVoid ? "" : retval.CSType == retval.ToNativeType ? "return " : retval.CSType + " raw_ret = ");
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sw.WriteLine ("{2}_managed.{0} ({1});", "On" + Name, call.ToString (), parms[0].Name);
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sw.Write (call.Finish ("\t\t\t\t"));
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if (!IsVoid && retval.CSType != retval.ToNativeType)
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sw.WriteLine ("\t\t\t\treturn {0};", SymbolTable.Table.ToNativeReturn (retval.CType, "raw_ret"));
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sw.WriteLine ("\t\t\t} catch (Exception e) {");
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bool fatal = HasOutParams || !IsVoid;
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sw.WriteLine ("\t\t\t\tGLib.ExceptionManager.RaiseUnhandledException (e, " + (fatal ? "true" : "false") + ");");
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if (fatal) {
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sw.WriteLine ("\t\t\t\t// NOTREACHED: above call doesn't return");
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sw.WriteLine ("\t\t\t\tthrow e;");
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}
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sw.WriteLine ("\t\t\t}");
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sw.WriteLine ("\t\t}\n");
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sw.WriteLine ("\t\tprivate static void Override" + Name + " (GLib.GType gtype)");
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sw.WriteLine ("\t\t{");
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sw.WriteLine ("\t\t\tif (" + Name + "VMCallback == null)");
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sw.WriteLine ("\t\t\t\t" + Name + "VMCallback = new " + Name + "VMDelegate (" + Name.ToLower() + "_cb);");
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if (use_glue)
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sw.WriteLine ("\t\t\t{0} (gtype.Val, {1}VMCallback);", glue_name, Name);
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else
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sw.WriteLine ("\t\t\tOverrideVirtualMethod (gtype, " + CName + ", " + Name + "VMCallback);");
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sw.WriteLine ("\t\t}\n");
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}
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public void GenEvent (StreamWriter sw, ClassBase implementor, string target)
|
|
{
|
|
string args_type = IsEventHandler ? "" : ", typeof (" + EventArgsQualifiedName + ")";
|
|
|
|
sw.WriteLine("\t\t[GLib.Signal("+ CName + ")]");
|
|
sw.Write("\t\tpublic ");
|
|
if (NeedNew (implementor))
|
|
sw.Write("new ");
|
|
sw.WriteLine("event " + EventHandlerQualifiedName + " " + Name + " {");
|
|
sw.WriteLine("\t\t\tadd {");
|
|
sw.WriteLine("\t\t\t\tGLib.Signal sig = GLib.Signal.Lookup (" + target + ", " + CName + args_type + ");");
|
|
sw.WriteLine("\t\t\t\tsig.AddDelegate (value);");
|
|
sw.WriteLine("\t\t\t}");
|
|
sw.WriteLine("\t\t\tremove {");
|
|
sw.WriteLine("\t\t\t\tGLib.Signal sig = GLib.Signal.Lookup (" + target + ", " + CName + args_type + ");");
|
|
sw.WriteLine("\t\t\t\tsig.RemoveDelegate (value);");
|
|
sw.WriteLine("\t\t\t}");
|
|
sw.WriteLine("\t\t}");
|
|
sw.WriteLine();
|
|
}
|
|
|
|
public void Generate (GenerationInfo gen_info, ClassBase implementor)
|
|
{
|
|
StreamWriter sw = gen_info.Writer;
|
|
|
|
if (implementor == null)
|
|
GenEventHandler (gen_info);
|
|
|
|
GenDefaultHandlerDelegate (gen_info, implementor);
|
|
if (gen_info.GlueEnabled && implementor == null && ClassFieldName.Length > 0)
|
|
GenGlueVirtualMethod (gen_info);
|
|
else
|
|
GenChainVirtualMethod (sw, implementor);
|
|
GenEvent (sw, implementor, "this");
|
|
|
|
Statistics.SignalCount++;
|
|
}
|
|
}
|
|
}
|
|
|