mirror of
https://github.com/Ryujinx/GtkSharp.git
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b2db2cda9e
* generator/*.cs: implement the interfaces on the adapters too. Generate an Implementor interface for users which exposes the methods to implement. Register based on the Implementor sub-iface. * gtk/*Adapter.custom: custom implementations for the custom interface members. * gtk/TreeIter.custom: make UserData public. * sample/TreeModelDemo.cs: sample for implementing a TreeModel interface. svn path=/trunk/gtk-sharp/; revision=86753
458 lines
17 KiB
C#
458 lines
17 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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public string CallbackName {
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get {
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return Name + "SignalCallback";
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}
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}
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private string CallbackSig {
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get {
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string result = "";
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for (int i = 0; i < parms.Count; i++) {
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if (i > 0)
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result += ", ";
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Parameter p = parms [i];
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if (p.PassAs != "" && !(p.Generatable is StructBase))
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result += p.PassAs + " ";
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result += (p.MarshalType + " arg" + i);
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}
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return result;
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}
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}
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public string DelegateName {
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get {
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return Name + "SignalDelegate";
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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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public string ClassFieldName {
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get {
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return elem.GetAttribute("cname").Replace ("-", "_");
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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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public 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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public string GenArgsInitialization (StreamWriter sw)
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{
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if (parms.Count > 1)
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sw.WriteLine("\t\t\t\targs.Args = new object[" + (parms.Count - 1) + "];");
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string finish = "";
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for (int idx = 1; idx < parms.Count; idx++) {
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Parameter p = parms [idx];
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IGeneratable igen = p.Generatable;
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if (p.PassAs != "out") {
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if (igen is ManualGen) {
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sw.WriteLine("\t\t\t\tif (arg{0} == IntPtr.Zero)", idx);
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sw.WriteLine("\t\t\t\t\targs.Args[{0}] = null;", idx - 1);
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sw.WriteLine("\t\t\t\telse {");
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sw.WriteLine("\t\t\t\t\targs.Args[" + (idx - 1) + "] = " + p.FromNative ("arg" + idx) + ";");
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sw.WriteLine("\t\t\t\t}");
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} else
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sw.WriteLine("\t\t\t\targs.Args[" + (idx - 1) + "] = " + p.FromNative ("arg" + idx) + ";");
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}
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if (igen is StructBase && p.PassAs == "ref")
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finish += "\t\t\t\tif (arg" + idx + " != IntPtr.Zero) System.Runtime.InteropServices.Marshal.StructureToPtr (args.Args[" + (idx-1) + "], arg" + idx + ", false);\n";
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else if (p.PassAs != "")
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finish += "\t\t\t\targ" + idx + " = " + igen.ToNativeReturn ("((" + p.CSType + ")args.Args[" + (idx - 1) + "])") + ";\n";
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}
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return finish;
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}
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public void GenArgsCleanup (StreamWriter sw, string finish)
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{
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if (IsVoid && finish.Length == 0)
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return;
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sw.WriteLine("\n\t\t\ttry {");
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sw.Write (finish);
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if (!IsVoid) {
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if (retval.CSType == "bool") {
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sw.WriteLine ("\t\t\t\tif (args.RetVal == null)");
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sw.WriteLine ("\t\t\t\t\treturn false;");
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}
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sw.WriteLine("\t\t\t\treturn " + SymbolTable.Table.ToNativeReturn (retval.CType, "((" + retval.CSType + ")args.RetVal)") + ";");
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}
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sw.WriteLine("\t\t\t} catch (Exception) {");
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sw.WriteLine ("\t\t\t\tException ex = new Exception (\"args.RetVal or 'out' property unset or set to incorrect type in " + EventHandlerQualifiedName + " callback\");");
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sw.WriteLine("\t\t\t\tGLib.ExceptionManager.RaiseUnhandledException (ex, true);");
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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 ex;");
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sw.WriteLine("\t\t\t}");
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}
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public void GenCallback (StreamWriter sw)
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{
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if (IsEventHandler)
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return;
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sw.WriteLine ("\t\t[GLib.CDeclCallback]");
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sw.WriteLine ("\t\tdelegate " + retval.ToNativeType + " " + DelegateName + " (" + CallbackSig + ", IntPtr gch);");
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sw.WriteLine ();
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sw.WriteLine ("\t\tstatic " + retval.ToNativeType + " " + CallbackName + " (" + CallbackSig + ", IntPtr gch)");
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sw.WriteLine("\t\t{");
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sw.WriteLine("\t\t\t{0} args = new {0} ();", EventArgsQualifiedName);
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sw.WriteLine("\t\t\ttry {");
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sw.WriteLine("\t\t\t\tGLib.Signal sig = ((GCHandle) gch).Target as GLib.Signal;");
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sw.WriteLine("\t\t\t\tif (sig == null)");
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sw.WriteLine("\t\t\t\t\tthrow new Exception(\"Unknown signal GC handle received \" + gch);");
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sw.WriteLine();
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string finish = GenArgsInitialization (sw);
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sw.WriteLine("\t\t\t\t{0} handler = ({0}) sig.Handler;", EventHandlerQualifiedName);
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sw.WriteLine("\t\t\t\thandler (GLib.Object.GetObject (arg0), args);");
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sw.WriteLine("\t\t\t} catch (Exception e) {");
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sw.WriteLine("\t\t\t\tGLib.ExceptionManager.RaiseUnhandledException (e, false);");
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sw.WriteLine("\t\t\t}");
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GenArgsCleanup (sw, finish);
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sw.WriteLine("\t\t}");
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sw.WriteLine();
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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 GenVirtualMethod (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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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 (StreamWriter sw, ClassBase implementor)
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{
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ManagedCallString call = new ManagedCallString (parms);
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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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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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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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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)
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{
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string marsh = IsEventHandler ? "" : ", new " + DelegateName + "(" + CallbackName + ")";
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sw.WriteLine("\t\t[GLib.Signal("+ CName + ")]");
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sw.Write("\t\tpublic ");
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if (NeedNew (implementor))
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sw.Write("new ");
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sw.WriteLine("event " + EventHandlerQualifiedName + " " + Name + " {");
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sw.WriteLine("\t\t\tadd {");
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sw.WriteLine("\t\t\t\tGLib.Signal sig = GLib.Signal.Lookup (" + target + ", " + CName + marsh + ");");
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sw.WriteLine("\t\t\t\tsig.AddDelegate (value);");
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sw.WriteLine("\t\t\t}");
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sw.WriteLine("\t\t\tremove {");
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sw.WriteLine("\t\t\t\tGLib.Signal sig = GLib.Signal.Lookup (" + target + ", " + CName + marsh + ");");
|
|
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);
|
|
|
|
GenCallback (sw);
|
|
GenDefaultHandlerDelegate (sw, implementor);
|
|
GenVirtualMethod (sw, implementor);
|
|
GenEvent (sw, implementor, "this");
|
|
|
|
Statistics.SignalCount++;
|
|
}
|
|
}
|
|
}
|
|
|