179d4b214f
* glib/GType.cs (LookupType): traversed referenced assemblies to find types in currently unloaded assemblies. Fixes #400595. svn path=/trunk/gtk-sharp/; revision=106027
239 lines
7.5 KiB
C#
Executable file
239 lines
7.5 KiB
C#
Executable file
// GLib.Type.cs - GLib GType class implementation
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//
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// Author: Mike Kestner <mkestner@speakeasy.net>
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//
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// Copyright (c) 2003 Mike Kestner
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// Copyright (c) 2003 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 Lesser GNU General
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// Public 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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// Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser 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 GLib {
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using System;
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using System.Collections;
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using System.Reflection;
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using System.Runtime.InteropServices;
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[StructLayout(LayoutKind.Sequential)]
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public struct GType {
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IntPtr val;
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public GType (IntPtr val)
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{
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this.val = val;
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}
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public static GType FromName (string native_name)
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{
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return new GType (g_type_from_name (native_name));
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}
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public static readonly GType Invalid = new GType ((IntPtr) TypeFundamentals.TypeInvalid);
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public static readonly GType None = new GType ((IntPtr) TypeFundamentals.TypeNone);
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public static readonly GType Interface = new GType ((IntPtr) TypeFundamentals.TypeInterface);
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public static readonly GType Char = new GType ((IntPtr) TypeFundamentals.TypeChar);
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public static readonly GType UChar = new GType ((IntPtr) TypeFundamentals.TypeUChar);
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public static readonly GType Boolean = new GType ((IntPtr) TypeFundamentals.TypeBoolean);
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public static readonly GType Int = new GType ((IntPtr) TypeFundamentals.TypeInt);
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public static readonly GType UInt = new GType ((IntPtr) TypeFundamentals.TypeUInt);
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public static readonly GType Long = new GType ((IntPtr) TypeFundamentals.TypeLong);
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public static readonly GType ULong = new GType ((IntPtr) TypeFundamentals.TypeULong);
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public static readonly GType Int64 = new GType ((IntPtr) TypeFundamentals.TypeInt64);
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public static readonly GType UInt64 = new GType ((IntPtr) TypeFundamentals.TypeUInt64);
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public static readonly GType Enum = new GType ((IntPtr) TypeFundamentals.TypeEnum);
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public static readonly GType Flags = new GType ((IntPtr) TypeFundamentals.TypeFlags);
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public static readonly GType Float = new GType ((IntPtr) TypeFundamentals.TypeFloat);
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public static readonly GType Double = new GType ((IntPtr) TypeFundamentals.TypeDouble);
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public static readonly GType String = new GType ((IntPtr) TypeFundamentals.TypeString);
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public static readonly GType Pointer = new GType ((IntPtr) TypeFundamentals.TypePointer);
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public static readonly GType Boxed = new GType ((IntPtr) TypeFundamentals.TypeBoxed);
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public static readonly GType Param = new GType ((IntPtr) TypeFundamentals.TypeParam);
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public static readonly GType Object = new GType ((IntPtr) TypeFundamentals.TypeObject);
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static Hashtable types = new Hashtable ();
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static Hashtable gtypes = new Hashtable ();
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public static void Register (GType native_type, System.Type type)
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{
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if (native_type != GType.Pointer && native_type != GType.Boxed && native_type != ManagedValue.GType)
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types[native_type.Val] = type;
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if (type != null)
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gtypes[type] = native_type;
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}
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[DllImport("libgobject-2.0-0.dll")]
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static extern void g_type_init ();
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static GType ()
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{
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g_type_init ();
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Register (GType.Char, typeof (sbyte));
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Register (GType.UChar, typeof (byte));
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Register (GType.Boolean, typeof (bool));
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Register (GType.Int, typeof (int));
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Register (GType.UInt, typeof (uint));
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Register (GType.Int64, typeof (long));
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Register (GType.UInt64, typeof (ulong));
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Register (GType.Float, typeof (float));
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Register (GType.Double, typeof (double));
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Register (GType.String, typeof (string));
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Register (GType.Object, typeof (GLib.Object));
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// One-way mapping
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gtypes[typeof (char)] = GType.UInt;
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}
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public static explicit operator GType (System.Type type)
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{
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GType gtype;
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if (gtypes.Contains (type))
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return (GType)gtypes[type];
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if (type.IsSubclassOf (typeof (GLib.Object))) {
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gtype = GLib.Object.LookupGType (type);
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Register (gtype, type);
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return gtype;
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}
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PropertyInfo pi = type.GetProperty ("GType", BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Static | BindingFlags.FlattenHierarchy);
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if (pi != null)
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gtype = (GType) pi.GetValue (null, null);
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else if (type.IsDefined (typeof (GTypeAttribute), false)) {
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GTypeAttribute gattr = (GTypeAttribute)Attribute.GetCustomAttribute (type, typeof (GTypeAttribute), false);
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pi = gattr.WrapperType.GetProperty ("GType", BindingFlags.Public | BindingFlags.Static);
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gtype = (GType) pi.GetValue (null, null);
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} else if (type.IsSubclassOf (typeof (GLib.Opaque)))
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gtype = GType.Pointer;
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else
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gtype = ManagedValue.GType;
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Register (gtype, type);
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return gtype;
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}
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static string GetQualifiedName (string cname)
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{
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for (int i = 1; i < cname.Length; i++) {
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if (System.Char.IsUpper (cname[i])) {
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if (i == 1 && cname [0] == 'G')
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return "GLib." + cname.Substring (1);
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else
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return cname.Substring (0, i) + "." + cname.Substring (i);
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}
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}
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throw new ArgumentException ("cname is not in NamespaceType format. GType.Register should be called directly for " + cname);
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}
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public static explicit operator Type (GType gtype)
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{
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return LookupType (gtype.Val);
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}
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public static void Init ()
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{
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// cctor already calls g_type_init.
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}
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static Type FindTypeInReferences (string type_name, Assembly asm, Hashtable visited)
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{
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if (visited.Contains (asm))
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return null;
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visited [asm] = asm;
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Type result = asm.GetType (type_name);
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if (result == null)
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foreach (AssemblyName ref_name in asm.GetReferencedAssemblies ()) {
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Assembly ref_asm = Assembly.Load (ref_name);
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result = FindTypeInReferences (type_name, ref_asm, visited);
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if (result != null)
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break;
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}
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return result;
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}
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public static Type LookupType (IntPtr typeid)
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{
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if (types.Contains (typeid))
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return (Type)types[typeid];
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string native_name = Marshaller.Utf8PtrToString (g_type_name (typeid));
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string type_name = GetQualifiedName (native_name);
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Type result = null;
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Assembly[] assemblies = (Assembly[]) AppDomain.CurrentDomain.GetAssemblies ().Clone ();
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foreach (Assembly asm in assemblies) {
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result = asm.GetType (type_name);
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if (result != null)
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break;
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}
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if (result == null) {
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Hashtable visited = new Hashtable ();
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foreach (Assembly asm in assemblies) {
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result = FindTypeInReferences (type_name, asm, visited);
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if (result != null)
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break;
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}
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}
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Register (new GType (typeid), result);
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return result;
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}
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public IntPtr Val {
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get {
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return val;
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}
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}
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public override bool Equals (object o)
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{
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if (!(o is GType))
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return false;
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return ((GType) o) == this;
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}
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public static bool operator == (GType a, GType b)
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{
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return a.Val == b.Val;
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}
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public static bool operator != (GType a, GType b)
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{
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return a.Val != b.Val;
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}
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public override int GetHashCode ()
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{
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return val.GetHashCode ();
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}
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[DllImport("libgobject-2.0-0.dll")]
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static extern IntPtr g_type_name (IntPtr raw);
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[DllImport("libgobject-2.0-0.dll")]
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static extern IntPtr g_type_from_name (string name);
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public override string ToString ()
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{
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return Marshaller.Utf8PtrToString (g_type_name (val));
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}
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}
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}
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