GtkSharp/generator/StructBase.cs
Mike Kestner d8fb820b89 2007-04-20 Mike Kestner <mkestner@novell.com>
* generator/CallbackGen.cs : switch to NativeCallbackSignature.
	* generator/GenBase.cs : add NativeCallbackType member.
	* generator/IGeneratable.cs : add NativeCallbackType member.
	* generator/ManagedCallString.cs : add guarded post call struct
	marshaling back to the native struct.
	* generator/NativeCallbackSignature.cs : new parallel to ImportSignature
	but using NativeCallbackType instead of MarshalType.
	* generator/Signal.cs : switch vm and sig marshaler callbacks to 
	NativeCallbackSignature. Perform guarding post call struct marshaling
	back to the native struct.
	* generator/Parameters.cs : add NativeCallbackType member.
	* generator/SimpleBase.cs : add NativeCallbackType member.
	* generator/StructBase.cs : add NativeCallbackType member using IntPtr
	to support NULL handling.
	* gtk/NodeCellDataFunc.cs : update native marshaler sig.

svn path=/trunk/gtk-sharp/; revision=76011
2007-04-20 15:38:47 +00:00

212 lines
4.9 KiB
C#

// GtkSharp.Generation.StructBase.cs - The Structure/Boxed Base Class.
//
// 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.Text.RegularExpressions;
using System.Xml;
public abstract class StructBase : ClassBase {
new ArrayList fields = new ArrayList ();
protected StructBase (XmlElement ns, XmlElement elem) : base (ns, elem)
{
foreach (XmlNode node in elem.ChildNodes) {
if (!(node is XmlElement)) continue;
XmlElement member = (XmlElement) node;
switch (node.Name) {
case "field":
fields.Add (new StructField (member, this));
break;
case "callback":
Statistics.IgnoreCount++;
break;
default:
if (!IsNodeNameHandled (node.Name))
Console.WriteLine ("Unexpected node " + node.Name + " in " + CName);
break;
}
}
}
public override string MarshalType {
get {
return "ref " + QualifiedName;
}
}
public override string NativeCallbackType {
get {
return "IntPtr";
}
}
public override string MarshalReturnType {
get {
return "IntPtr";
}
}
public override string ToNativeReturnType {
get {
return QualifiedName;
}
}
public override string CallByName (string var_name)
{
return "ref " + var_name;
}
public override string CallByName ()
{
return "ref this";
}
public override string AssignToName {
get { return "raw"; }
}
public override string FromNative(string var)
{
return QualifiedName + ".New (" + var + ")";
}
public override string ToNativeReturn(string var)
{
return var;
}
private bool DisableNew {
get {
return Elem.HasAttribute ("disable_new");
}
}
protected new void GenFields (GenerationInfo gen_info)
{
int bitfields = 0;
bool need_field = true;
foreach (StructField field in fields) {
if (field.IsBitfield) {
if (need_field) {
StreamWriter sw = gen_info.Writer;
sw.WriteLine ("\t\tprivate uint _bitfield{0};\n", bitfields++);
need_field = false;
}
} else
need_field = true;
field.Generate (gen_info, "\t\t");
}
}
public override bool Validate ()
{
foreach (StructField field in fields) {
if (!field.Validate ()) {
Console.WriteLine ("in Struct " + QualifiedName);
if (!field.IsPointer)
return false;
}
}
return base.Validate ();
}
public override void Generate (GenerationInfo gen_info)
{
bool need_close = false;
if (gen_info.Writer == null) {
gen_info.Writer = gen_info.OpenStream (Name);
need_close = true;
}
StreamWriter sw = gen_info.Writer;
sw.WriteLine ("namespace " + NS + " {");
sw.WriteLine ();
sw.WriteLine ("\tusing System;");
sw.WriteLine ("\tusing System.Collections;");
sw.WriteLine ("\tusing System.Runtime.InteropServices;");
sw.WriteLine ();
sw.WriteLine ("#region Autogenerated code");
if (IsDeprecated)
sw.WriteLine ("\t[Obsolete]");
sw.WriteLine ("\t[StructLayout(LayoutKind.Sequential)]");
sw.WriteLine ("\tpublic struct " + Name + " {");
sw.WriteLine ();
GenFields (gen_info);
sw.WriteLine ();
GenCtors (gen_info);
GenMethods (gen_info, null, null);
if (!need_close)
return;
sw.WriteLine ("#endregion");
AppendCustom(sw, gen_info.CustomDir);
sw.WriteLine ("\t}");
sw.WriteLine ("}");
sw.Close ();
gen_info.Writer = null;
}
protected override void GenCtors (GenerationInfo gen_info)
{
StreamWriter sw = gen_info.Writer;
sw.WriteLine ("\t\tpublic static {0} Zero = new {0} ();", QualifiedName);
sw.WriteLine();
if (!DisableNew) {
sw.WriteLine ("\t\tpublic static " + QualifiedName + " New(IntPtr raw) {");
sw.WriteLine ("\t\t\tif (raw == IntPtr.Zero) {");
sw.WriteLine ("\t\t\t\treturn {0}.Zero;", QualifiedName);
sw.WriteLine ("\t\t\t}");
sw.WriteLine ("\t\t\t{0} self = new {0}();", QualifiedName);
sw.WriteLine ("\t\t\tself = ({0}) Marshal.PtrToStructure (raw, self.GetType ());", QualifiedName);
sw.WriteLine ("\t\t\treturn self;");
sw.WriteLine ("\t\t}");
sw.WriteLine ();
}
foreach (Ctor ctor in Ctors)
ctor.IsStatic = true;
base.GenCtors (gen_info);
}
}
}