GtkSharp/generator/Ctor.cs
Mike Kestner c9f1eadc11 2004-05-07 Mike Kestner <mkestner@ximian.com>
[Derived from a patch by Ben Maurer]
	* generator/Ctor.cs : generate code to detect subclassing and handle
	GType registration and native object creation properly.
	* generator/Parameters.cs : add PropertyName accessor for param attr.
	* generator/Property.cs : use a new GLib.Value ctor.
	* glib/ObjectManager.cs : redo hash access.
	* glib/Object.cs : CreateNativeObject method to invoke g_object_newv
	and some refactoring of RegisterGType and LookupGType.
	* glib/Value.cs : make gtype field an IntPtr.
	* glib/glue/object.c : glue for g_object_newv use.
	* glib/glue/value.c : new glue for value creation.
	* gtk/Dialog.custom : fix a ctor declaration for auto-reg.
	* gtk/Gtk.metadata : mark a couple property_name attrs as examples.
	* sample/Subclass.cs : use auto-GType-registration now.

svn path=/trunk/gtk-sharp/; revision=26916
2004-05-07 13:42:59 +00:00

208 lines
6.3 KiB
C#

// GtkSharp.Generation.Ctor.cs - The Constructor Generation Class.
//
// Author: Mike Kestner <mkestner@speakeasy.net>
//
// (c) 2001-2002 Mike Kestner
namespace GtkSharp.Generation {
using System;
using System.Collections;
using System.IO;
using System.Xml;
public class Ctor {
private string libname;
private XmlElement elem;
private Parameters parms;
private Signature sig = null;
private ImportSignature isig = null;
private MethodBody body = null;
private bool preferred;
private string clashName = null;
private ClassBase container_type;
private bool force_static;
private bool needs_chaining = false;
public bool Preferred {
get { return preferred; }
set { preferred = value; }
}
public bool ForceStatic {
get { return force_static; }
set { force_static = value; }
}
public Parameters Params {
get { return parms; }
}
public Ctor (string libname, XmlElement elem, ClassBase container_type) {
this.libname = libname;
this.elem = elem;
this.container_type = container_type;
XmlElement parms_elem = elem ["parameters"];
if (parms_elem != null)
parms = new Parameters (parms_elem, container_type.NS);
if (elem.HasAttribute ("preferred"))
preferred = true;
if (container_type is ObjectGen)
needs_chaining = true;
}
public bool Validate ()
{
if (parms != null) {
if (!parms.Validate ()) {
Console.Write("in ctor ");
Statistics.ThrottledCount++;
return false;
}
}
sig = new Signature (parms);
isig = new ImportSignature (parms, container_type.NS);
body = new MethodBody (parms, container_type.NS);
return true;
}
public void InitClashMap (Hashtable clash_map)
{
if (clash_map.ContainsKey (sig.Types)) {
int num = (int) clash_map[sig.Types];
clash_map[sig.Types] = ++num;
}
else
clash_map[sig.Types] = 0;
}
public void Initialize (Hashtable clash_map)
{
int clashes = (int) clash_map[sig.Types];
string cname = elem.GetAttribute("cname");
if (force_static || (clashes > 0 && !Preferred)) {
string mname = cname.Substring(cname.IndexOf("new"));
mname = mname.Substring(0,1).ToUpper() + mname.Substring(1);
int idx;
while ((idx = mname.IndexOf("_")) > 0) {
mname = mname.Substring(0, idx) + mname.Substring(idx+1, 1).ToUpper() + mname.Substring(idx+2);
}
clashName = mname + "(" + sig.ToString () + ")";
}
}
public void Generate (GenerationInfo gen_info)
{
StreamWriter sw = gen_info.Writer;
string cname = elem.GetAttribute("cname");
string name = ((XmlElement)elem.ParentNode).GetAttribute("name");
string safety;
if (body.ThrowsException)
safety = "unsafe ";
else
safety = "";
SymbolTable table = SymbolTable.Table;
sw.WriteLine("\t\t[DllImport(\"" + libname + "\")]");
sw.WriteLine("\t\tstatic extern " + safety + "IntPtr " + cname + "(" + isig.ToString () + ");");
sw.WriteLine();
if (clashName != null) {
string modifiers = "";
Ctor dup = null;
ObjectGen parent = (ObjectGen) container_type.Parent;
while (dup == null && parent != null) {
foreach (Ctor c in parent.Ctors) {
if (c.clashName == clashName) {
dup = c;
modifiers = "new ";
break;
}
}
parent = (ObjectGen) parent.Parent;
}
sw.WriteLine("\t\tpublic static " + safety + modifiers + name + " " + clashName);
sw.WriteLine("\t\t{");
body.Initialize(gen_info, false, false, "");
sw.Write("\t\t\treturn ");
if (container_type is StructBase)
sw.Write ("{0}.New (", name);
else
sw.Write ("new {0} (", name);
sw.WriteLine (cname + "(" + body.GetCallString (false) + "));");
} else {
sw.WriteLine("\t\tpublic {0}{1} ({2}) {3}", safety, name, sig.ToString(), needs_chaining ? ": base (IntPtr.Zero)" : "");
sw.WriteLine("\t\t{");
if (needs_chaining) {
sw.WriteLine ("\t\t\tif (GetType () != typeof (" + name + ")) {");
if (Params == null || Params.Count == 0) {
sw.WriteLine ("\t\t\t\tCreateNativeObject (new string [0], new GLib.Value[0]);");
sw.WriteLine ("\t\t\t\treturn;");
} else {
ArrayList names = new ArrayList ();
ArrayList values = new ArrayList ();
for (int i = 0; i < Params.Count; i++) {
Parameter p = Params[i];
if (container_type.GetPropertyRecursively (p.StudlyName) != null) {
names.Add (p.Name);
values.Add (p.Name);
} else if (p.PropertyName != String.Empty) {
names.Add (p.PropertyName);
values.Add (p.Name);
}
}
if (names.Count == Params.Count) {
sw.WriteLine ("\t\t\t\tArrayList vals = new ArrayList();");
sw.WriteLine ("\t\t\t\tArrayList names = new ArrayList();");
for (int i = 0; i < names.Count; i++) {
Parameter p = Params [i];
string indent = "\t\t\t\t";
if (p.NullOk && p.Generatable is ObjectGen) {
sw.WriteLine (indent + "if (" + p.Name + " != null) {");
indent += "\t";
}
sw.WriteLine (indent + "names.Add (\"" + names [i] + "\");");
sw.Write (indent + "vals.Add (");
if (table.IsEnum (p.CType))
sw.WriteLine ("new GLib.Value (this, \"" + names[i] + "\", new GLib.EnumWrapper ((int)" + values[i] + ", " + (table.IsEnumFlags (p.CType) ? "true" : "false") + ")));");
else
sw.WriteLine ("new GLib.Value (" + values[i] + "));");
if (p.NullOk && p.Generatable is ObjectGen)
sw.WriteLine ("\t\t\t\t}");
}
sw.WriteLine ("\t\t\t\tCreateNativeObject ((string[])names.ToArray (typeof (string)), (GLib.Value[])vals.ToArray (typeof (GLib.Value)));");
sw.WriteLine ("\t\t\t\treturn;");
} else
sw.WriteLine ("\t\t\t\tthrow new InvalidOperationException (\"Can't override this constructor.\");");
}
sw.WriteLine ("\t\t\t}");
}
body.Initialize(gen_info, false, false, "");
sw.WriteLine("\t\t\t{0} = {1}({2});", container_type.AssignToName, cname, body.GetCallString (false));
body.HandleException (sw, "");
}
sw.WriteLine("\t\t}");
sw.WriteLine();
Statistics.CtorCount++;
}
}
}