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GtkSharp/generator/OpaqueGen.cs
Stephan Sundermann 016891bb7a generator: Fix generation of SetGValue method 
Some types need special methods to convert an object to a GLib.Value.
The type system will look for a SetGValue method with a "ref GLib.Value"
parameter and invoke it.

A special case in the generation is needed because this is a non-static
method with the Handle being passed as the second parameter and the
GLib.Value as the first. Without this fix, the generator would generate
the Handle for the first parameter and then the GLib.Value.

Signed-off-by: Bertrand Lorentz <bertrand.lorentz@gmail.com>
2014-04-27 15:15:15 +02:00

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// GtkSharp.Generation.OpaqueGen.cs - The Opaque Generatable.
//
// Author: Mike Kestner <mkestner@speakeasy.net>
//
// Copyright (c) 2001-2003 Mike Kestner
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of version 2 of the GNU General Public
// License as published by the Free Software Foundation.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// General Public License for more details.
//
// You should have received a copy of the GNU General Public
// License along with this program; if not, write to the
// Free Software Foundation, Inc., 59 Temple Place - Suite 330,
// Boston, MA 02111-1307, USA.
namespace GtkSharp.Generation {
using System;
using System.Collections;
using System.IO;
using System.Xml;
public class OpaqueGen : HandleBase {
public OpaqueGen (XmlElement ns, XmlElement elem) : base (ns, elem) {}
public override string FromNative(string var, bool owned)
{
return var + " == IntPtr.Zero ? null : (" + QualifiedName + ") GLib.Opaque.GetOpaque (" + var + ", typeof (" + QualifiedName + "), " + (owned ? "true" : "false") + ")";
}
private bool DisableRawCtor {
get {
return Elem.GetAttributeAsBoolean ("disable_raw_ctor");
}
}
public override void Generate (GenerationInfo gen_info)
{
gen_info.CurrentType = QualifiedName;
StreamWriter sw = gen_info.Writer = gen_info.OpenStream (Name, NS);
sw.WriteLine ("namespace " + NS + " {");
sw.WriteLine ();
sw.WriteLine ("\tusing System;");
sw.WriteLine ("\tusing System.Collections;");
sw.WriteLine ("\tusing System.Collections.Generic;");
sw.WriteLine ("\tusing System.Runtime.InteropServices;");
sw.WriteLine ();
sw.WriteLine ("#region Autogenerated code");
SymbolTable table = SymbolTable.Table;
Method ref_, unref, dispose, set_gvalue;
GetSpecialMethods (out ref_, out unref, out dispose, out set_gvalue);
if (IsDeprecated)
sw.WriteLine ("\t[Obsolete]");
sw.Write ("\t{0} partial {1}class " + Name, IsInternal ? "internal" : "public", IsAbstract ? "abstract " : String.Empty);
string cs_parent = table.GetCSType(Elem.GetAttribute("parent"));
if (cs_parent != "")
sw.Write (" : " + cs_parent);
else
sw.Write (" : GLib.Opaque");
foreach (string iface in managed_interfaces) {
if (Parent != null && Parent.Implements (iface))
continue;
sw.Write (", " + iface);
}
sw.WriteLine (" {");
sw.WriteLine ();
GenConstants (gen_info);
GenFields (gen_info);
GenMethods (gen_info, null, null);
GenCtors (gen_info);
if (ref_ != null) {
ref_.GenerateImport (sw);
sw.WriteLine ("\t\tprotected override void Ref (IntPtr raw)");
sw.WriteLine ("\t\t{");
sw.WriteLine ("\t\t\tif (!Owned) {");
sw.WriteLine ("\t\t\t\t" + ref_.CName + " (raw);");
sw.WriteLine ("\t\t\t\tOwned = true;");
sw.WriteLine ("\t\t\t}");
sw.WriteLine ("\t\t}");
sw.WriteLine ();
if (ref_.IsDeprecated) {
sw.WriteLine ("\t\t[Obsolete(\"" + QualifiedName + " is now refcounted automatically\")]");
if (ref_.ReturnType == "void")
sw.WriteLine ("\t\tpublic void Ref () {}");
else
sw.WriteLine ("\t\tpublic " + Name + " Ref () { return this; }");
sw.WriteLine ();
}
}
bool finalizer_needed = false;
if (unref != null) {
unref.GenerateImport (sw);
sw.WriteLine ("\t\tprotected override void Unref (IntPtr raw)");
sw.WriteLine ("\t\t{");
sw.WriteLine ("\t\t\tif (Owned) {");
sw.WriteLine ("\t\t\t\t" + unref.CName + " (raw);");
sw.WriteLine ("\t\t\t\tOwned = false;");
sw.WriteLine ("\t\t\t}");
sw.WriteLine ("\t\t}");
sw.WriteLine ();
if (unref.IsDeprecated) {
sw.WriteLine ("\t\t[Obsolete(\"" + QualifiedName + " is now refcounted automatically\")]");
sw.WriteLine ("\t\tpublic void Unref () {}");
sw.WriteLine ();
}
finalizer_needed = true;
}
if (dispose != null) {
dispose.GenerateImport (sw);
sw.WriteLine ("\t\tprotected override void Free (IntPtr raw)");
sw.WriteLine ("\t\t{");
sw.WriteLine ("\t\t\t" + dispose.CName + " (raw);");
sw.WriteLine ("\t\t}");
sw.WriteLine ();
if (dispose.IsDeprecated) {
sw.WriteLine ("\t\t[Obsolete(\"" + QualifiedName + " is now freed automatically\")]");
sw.WriteLine ("\t\tpublic void " + dispose.Name + " () {}");
sw.WriteLine ();
}
finalizer_needed = true;
}
if (finalizer_needed) {
sw.WriteLine ("\t\tclass FinalizerInfo {");
sw.WriteLine ("\t\t\tIntPtr handle;");
sw.WriteLine ();
sw.WriteLine ("\t\t\tpublic FinalizerInfo (IntPtr handle)");
sw.WriteLine ("\t\t\t{");
sw.WriteLine ("\t\t\t\tthis.handle = handle;");
sw.WriteLine ("\t\t\t}");
sw.WriteLine ();
sw.WriteLine ("\t\t\tpublic bool Handler ()");
sw.WriteLine ("\t\t\t{");
if (dispose != null)
sw.WriteLine ("\t\t\t\t{0} (handle);", dispose.CName);
else if (unref != null)
sw.WriteLine ("\t\t\t\t{0} (handle);", unref.CName);
sw.WriteLine ("\t\t\t\treturn false;");
sw.WriteLine ("\t\t\t}");
sw.WriteLine ("\t\t}");
sw.WriteLine ();
sw.WriteLine ("\t\t~{0} ()", Name);
sw.WriteLine ("\t\t{");
sw.WriteLine ("\t\t\tif (!Owned)");
sw.WriteLine ("\t\t\t\treturn;");
sw.WriteLine ("\t\t\tFinalizerInfo info = new FinalizerInfo (Handle);");
sw.WriteLine ("\t\t\tGLib.Timeout.Add (50, new GLib.TimeoutHandler (info.Handler));");
sw.WriteLine ("\t\t}");
sw.WriteLine ();
}
#if false
Method copy = Methods ["Copy"] as Method;
if (copy != null && copy.Parameters.Count == 0) {
sw.WriteLine ("\t\tprotected override GLib.Opaque Copy (IntPtr raw)");
sw.WriteLine ("\t\t{");
sw.WriteLine ("\t\t\tGLib.Opaque result = new " + QualifiedName + " (" + copy.CName + " (raw));");
sw.WriteLine ("\t\t\tresult.Owned = true;");
sw.WriteLine ("\t\t\treturn result;");
sw.WriteLine ("\t\t}");
sw.WriteLine ();
}
#endif
if (set_gvalue != null) {
sw.WriteLine ("\t\t[DllImport(\"{0}\", CallingConvention = CallingConvention.Cdecl)]", LibraryName);
sw.WriteLine ("\t\tstatic extern void {0}(ref GLib.Value val, IntPtr obj);", set_gvalue.CName);
sw.WriteLine ();
sw.WriteLine ("\t\tpublic void SetGValue (ref GLib.Value val)");
sw.WriteLine ("\t\t{");
sw.WriteLine ("\t\t\t{0} (ref val, Handle);", set_gvalue.CName);
sw.WriteLine ("\t\t}");
sw.WriteLine ();
}
sw.WriteLine ("#endregion");
sw.WriteLine ("\t}");
sw.WriteLine ("}");
sw.Close ();
gen_info.Writer = null;
Statistics.OpaqueCount++;
}
void GetSpecialMethods (out Method ref_, out Method unref, out Method dispose, out Method set_gvalue)
{
ref_ = CheckSpecialMethod (GetMethod ("Ref"));
unref = CheckSpecialMethod (GetMethod ("Unref"));
dispose = GetMethod ("Free");
if (dispose == null) {
dispose = GetMethod ("Destroy");
if (dispose == null)
dispose = GetMethod ("Dispose");
}
dispose = CheckSpecialMethod (dispose);
set_gvalue = GetMethod ("SetGValue");
Methods.Remove ("SetGValue");
}
Method CheckSpecialMethod (Method method)
{
if (method == null)
return null;
if (method.ReturnType != "void" &&
method.ReturnType != QualifiedName)
return null;
if (method.Signature.ToString () != "")
return null;
Methods.Remove (method.Name);
return method;
}
protected override void GenCtors (GenerationInfo gen_info)
{
if (!DisableRawCtor) {
gen_info.Writer.WriteLine("\t\tpublic " + Name + "(IntPtr raw) : base(raw) {}");
gen_info.Writer.WriteLine();
}
base.GenCtors (gen_info);
}
}
}
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