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![Mike Kestner](/assets/img/avatar_default.png)
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
169 lines
5.2 KiB
C#
169 lines
5.2 KiB
C#
// GtkSharp.Generation.VirtualMethod.cs - The VirtualMethod Generatable.
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//
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// Author: Mike Kestner <mkestner@novell.com>
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//
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// Copyright (c) 2003-2004 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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// FIXME: handle static VMs
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public class VirtualMethod : MethodBase {
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XmlElement elem;
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ReturnValue retval;
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Parameters parms;
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public VirtualMethod (XmlElement elem, ClassBase container_type) : base (elem, container_type)
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{
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this.elem = elem;
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retval = new ReturnValue (elem ["return-type"]);
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parms = new Parameters (elem["parameters"]);
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parms.HideData = true;
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}
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public bool IsGetter {
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get {
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return HasGetterName && ((!retval.IsVoid && parms.Count == 1) || (retval.IsVoid && parms.Count == 2 && parms [1].PassAs == "out"));
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}
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}
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public bool IsSetter {
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get {
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if (!HasSetterName || !retval.IsVoid)
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return false;
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if (parms.Count == 2 || (parms.Count == 4 && parms [1].Scope == "notified"))
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return true;
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else
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return false;
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}
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}
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public string MarshalReturnType {
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get {
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return SymbolTable.Table.GetToNativeReturnType (elem["return-type"].GetAttribute("type"));
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}
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}
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public void GenerateCallback (StreamWriter sw)
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{
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if (!Validate ())
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return;
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ManagedCallString call = new ManagedCallString (parms, true);
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string type = parms [0].CSType + "Implementor";
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string name = parms [0].Name;
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string call_string = "__obj." + Name + " (" + call + ")";
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if (IsGetter)
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call_string = "__obj." + (Name.StartsWith ("Get") ? Name.Substring (3) : Name);
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else if (IsSetter)
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call_string = "__obj." + Name.Substring (3) + " = " + call;
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sw.WriteLine ("\t\t[GLib.CDeclCallback]");
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sw.WriteLine ("\t\tdelegate " + MarshalReturnType + " " + Name + "Delegate (" + parms.ImportSignature + ");");
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sw.WriteLine ();
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sw.WriteLine ("\t\tstatic " + MarshalReturnType + " " + Name + "Callback (" + 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" + type + " __obj = GLib.Object.GetObject (" + name + ", false) as " + type + ";");
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sw.Write (call.Setup ("\t\t\t\t"));
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if (retval.IsVoid) {
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if (IsGetter) {
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Parameter p = parms [1];
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string out_name = p.Name;
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if (p.MarshalType != p.CSType)
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out_name = "my" + out_name;
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sw.WriteLine ("\t\t\t\t" + out_name + " = " + call_string + ";");
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} else
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sw.WriteLine ("\t\t\t\t" + call_string + ";");
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} else
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sw.WriteLine ("\t\t\t\t" + retval.CSType + " __result = " + call_string + ";");
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bool fatal = parms.HasOutParam || !retval.IsVoid;
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sw.Write (call.Finish ("\t\t\t\t"));
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if (!retval.IsVoid)
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sw.WriteLine ("\t\t\t\treturn " + retval.ToNative ("__result") + ";");
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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, " + (fatal ? "true" : "false") + ");");
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if (fatal) {
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sw.WriteLine ("\t\t\t\t// NOTREACHED: above call does not 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}");
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}
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public void GenerateDeclaration (StreamWriter sw, VirtualMethod complement)
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{
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VMSignature vmsig = new VMSignature (parms);
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if (IsGetter) {
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string name = Name.StartsWith ("Get") ? Name.Substring (3) : Name;
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string type = retval.IsVoid ? parms [1].CSType : retval.CSType;
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if (complement != null && complement.parms [1].CSType == type)
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sw.WriteLine ("\t\t" + type + " " + name + " { get; set; }");
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else {
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sw.WriteLine ("\t\t" + type + " " + name + " { get; }");
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if (complement != null)
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sw.WriteLine ("\t\t" + complement.retval.CSType + " " + complement.Name + " (" + (new VMSignature (complement.parms)) + ");");
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}
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} else if (IsSetter)
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sw.WriteLine ("\t\t" + parms[1].CSType + " " + Name.Substring (3) + " { set; }");
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else
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sw.WriteLine ("\t\t" + retval.CSType + " " + Name + " (" + vmsig + ");");
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}
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enum ValidState {
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Unvalidated,
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Invalid,
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Valid
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}
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ValidState vstate = ValidState.Unvalidated;
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public bool IsValid {
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get {
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if (vstate == ValidState.Unvalidated)
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return Validate ();
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else
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return vstate == ValidState.Valid;
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}
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}
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public override bool Validate ()
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{
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if (!parms.Validate () || !retval.Validate ()) {
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Console.Write ("in virtual method " + Name + " ");
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vstate = ValidState.Invalid;
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return false;
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}
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vstate = ValidState.Valid;
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return true;
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}
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}
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}
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