31001501ed
* generator/Method.cs (GenerateBody): kill the "cast_type" overload of this, since cast_type wasn't even used. * generator/Property.cs : call simpler GenerateBody sig svn path=/trunk/gtk-sharp/; revision=16550
207 lines
7.2 KiB
C#
207 lines
7.2 KiB
C#
// GtkSharp.Generation.SignalHandler.cs - The SignalHandler marshaling Class.
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//
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// Author: Mike Kestner <mkestner@speakeasy.net>
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//
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// (c) 2002-2003 Mike Kestner
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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 SignalHandler {
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public static string GetName(XmlElement sig, string ns, bool generate)
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{
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XmlElement ret_elem = sig["return-type"];
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if (ret_elem == null) {
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Console.Write("Missing return-type ");
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return "";
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}
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string retval = ret_elem.GetAttribute("type");
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if (retval == "") {
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Console.Write("Invalid return-type ");
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return "";
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}
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SymbolTable table = SymbolTable.Table;
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string s_ret = table.GetCSType(retval);
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string p_ret = table.GetMarshalReturnType(retval);
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if ((s_ret == "") || (p_ret == "")) {
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Console.Write("Funky type: " + retval);
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return "";
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}
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string key = retval;
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string pinv = "";
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string name = table.GetName(retval);
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int pcnt = 0;
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ArrayList parms = new ArrayList();
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XmlElement params_elem = sig["parameters"];
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if (params_elem == null) {
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Console.Write("Missing parameters ");
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return "";
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}
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foreach (XmlNode parm in params_elem.ChildNodes) {
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if (!(parm is XmlElement) || parm.Name != "parameter") continue;
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XmlElement elem = (XmlElement) parm;
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string type = elem.GetAttribute("type");
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string ptype = table.GetMarshalType(type);
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if (ptype == "") {
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Console.Write("Funky type: " + type);
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return "";
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}
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if (pcnt > 0) {
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pinv += ", ";
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}
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pinv += (ptype + " arg" + pcnt);
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parms.Add(type);
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if (table.IsObject(type) || table.IsInterface(type)) {
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name += "Object";
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key += "Object";
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} else {
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name += table.GetName(type);
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key += type;
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}
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pcnt++;
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}
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String sname = name + "Signal";
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String dname = name + "Delegate";
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String cbname = name + "Callback";
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if (!generate)
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return ns + "." + sname;
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char sep = Path.DirectorySeparatorChar;
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String dir = ".." + sep + ns.ToLower() + sep + "generated";
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if (!Directory.Exists(dir)) {
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Directory.CreateDirectory(dir);
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}
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String filename = dir + sep + ns + "Sharp." + sname + ".cs";
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FileStream stream = new FileStream (filename, FileMode.Create, FileAccess.Write);
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StreamWriter sw = new StreamWriter (stream);
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sw.WriteLine ("// Generated File. Do not modify.");
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sw.WriteLine ("// <c> 2001-2002 Mike Kestner");
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sw.WriteLine ();
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sw.WriteLine("namespace " + ns + "Sharp {");
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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("\tusing GtkSharp;");
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sw.WriteLine();
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sw.Write("\tinternal delegate " + p_ret + " ");
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sw.WriteLine(dname + "(" + pinv + ", int key);");
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sw.WriteLine();
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sw.WriteLine("\tinternal class " + sname + " : SignalCallback {");
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sw.WriteLine();
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sw.WriteLine("\t\tprivate static " + dname + " _Delegate;");
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sw.WriteLine();
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sw.WriteLine("\t\tprivate IntPtr _raw;");
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sw.WriteLine("\t\tprivate uint _HandlerID;");
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sw.WriteLine();
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sw.Write("\t\tprivate static " + p_ret + " ");
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sw.WriteLine(cbname + "(" + pinv + ", int key)");
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sw.WriteLine("\t\t{");
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sw.WriteLine("\t\t\tif (!_Instances.Contains(key))");
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sw.WriteLine("\t\t\t\tthrow new Exception(\"Unexpected signal key \" + key);");
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sw.WriteLine();
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sw.WriteLine("\t\t\t" + sname + " inst = (" + sname + ") _Instances[key];");
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if ((s_ret == "void") && (parms.Count == 1)) {
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sw.WriteLine("\t\t\tEventHandler h = (EventHandler) inst._handler;");
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sw.WriteLine("\t\t\th (inst._obj, new EventArgs ());");
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sw.WriteLine("\t\t}");
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sw.WriteLine();
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} else {
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sw.WriteLine("\t\t\tSignalArgs args = (SignalArgs) Activator.CreateInstance (inst._argstype);");
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if (parms.Count > 1) {
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sw.WriteLine("\t\t\targs.Args = new object[" + (parms.Count-1) + "];");
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}
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for (int idx=1; idx < parms.Count; idx++) {
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// sw.WriteLine("\t\t\tConsole.WriteLine (\"" + sname + " arg{0}: \" + arg{0});", idx);
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string ctype = (string) parms[idx];
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ClassBase wrapper = table.GetClassGen (ctype);
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if ((wrapper != null && !(wrapper is StructBase)) || table.IsManuallyWrapped (ctype)) {
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sw.WriteLine("\t\t\tif (arg{0} == IntPtr.Zero)", idx);
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sw.WriteLine("\t\t\t\targs.Args[{0}] = null;", idx - 1);
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sw.WriteLine("\t\t\telse {");
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if (wrapper != null && wrapper is ObjectGen)
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sw.WriteLine("\t\t\t\targs.Args[" + (idx-1) + "] = GLib.Object.GetObject(arg" + idx + ");");
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else
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sw.WriteLine("\t\t\t\targs.Args[" + (idx-1) + "] = " + table.FromNative (ctype, "arg" + idx) + ";");
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if ((wrapper != null && (wrapper is OpaqueGen)) || table.IsManuallyWrapped (ctype)) {
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sw.WriteLine("\t\t\t\tif (args.Args[" + (idx-1) + "] == null)");
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sw.WriteLine("\t\t\t\t\targs.Args[{0}] = new {1}(arg{2});", idx-1, table.GetCSType (ctype), idx);
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}
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sw.WriteLine("\t\t\t}");
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} else {
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sw.WriteLine("\t\t\targs.Args[" + (idx-1) + "] = " + table.FromNative (ctype, "arg" + idx) + ";");
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}
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}
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sw.WriteLine("\t\t\tobject[] argv = new object[2];");
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sw.WriteLine("\t\t\targv[0] = inst._obj;");
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sw.WriteLine("\t\t\targv[1] = args;");
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sw.WriteLine("\t\t\tinst._handler.DynamicInvoke(argv);");
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if (retval != "void") {
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sw.WriteLine ("\t\t\tif (args.RetVal == null)");
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if (s_ret == "bool")
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sw.WriteLine ("\t\t\t\treturn false;");
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else
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sw.WriteLine ("\t\t\t\tthrow new Exception(\"args.RetVal unset in callback\");");
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sw.WriteLine("\t\t\treturn (" + p_ret + ") " + table.ToNativeReturn (retval, "((" + s_ret + ")args.RetVal)") + ";");
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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\t[DllImport(\"libgobject-2.0-0.dll\")]");
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sw.Write("\t\tstatic extern uint g_signal_connect_data(");
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sw.Write("IntPtr obj, String name, " + dname + " cb, int key, IntPtr p,");
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sw.WriteLine(" int flags);");
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sw.WriteLine();
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sw.Write("\t\tpublic " + sname + "(GLib.Object obj, IntPtr raw, ");
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sw.WriteLine("String name, Delegate eh, Type argstype) : base(obj, eh, argstype)");
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sw.WriteLine("\t\t{");
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sw.WriteLine("\t\t\tif (_Delegate == null) {");
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sw.WriteLine("\t\t\t\t_Delegate = new " + dname + "(" + cbname + ");");
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sw.WriteLine("\t\t\t}");
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sw.WriteLine("\t\t\t_raw = raw;");
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sw.Write("\t\t\t_HandlerID = g_signal_connect_data(raw, name, ");
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sw.WriteLine("_Delegate, _key, new IntPtr(0), 0);");
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sw.WriteLine("\t\t}");
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sw.WriteLine();
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sw.WriteLine("\t\t[DllImport(\"libgobject-2.0-0.dll\")]");
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sw.WriteLine("\t\tstatic extern void g_signal_handler_disconnect (IntPtr instance, uint handler);");
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sw.WriteLine();
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sw.WriteLine("\t\tprotected override void Dispose (bool disposing)");
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sw.WriteLine("\t\t{");
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sw.WriteLine("\t\t\t_Instances.Remove(_key);");
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sw.WriteLine("\t\t\tif(_Instances.Count == 0)");
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sw.WriteLine("\t\t\t\t_Delegate = null;");
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sw.WriteLine();
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sw.WriteLine("\t\t\tg_signal_handler_disconnect (_raw, _HandlerID);");
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sw.WriteLine("\t\t\tbase.Dispose (disposing);");
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sw.WriteLine("\t\t}");
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sw.WriteLine("\t}");
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sw.WriteLine("}");
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sw.Close();
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return ns + "Sharp." + sname;
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}
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}
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}
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