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// GLib.Value.cs - GLib Value class implementation
//
// Author: Mike Kestner <mkestner@speakeasy.net>
//
// Copyright (c) 2001 Mike Kestner
// Copyright (c) 2003-2004 Novell, Inc.
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of version 2 of the Lesser 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
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser 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 GLib {
using System;
using System.Reflection;
using System.Runtime.InteropServices;
[StructLayout (LayoutKind.Sequential)]
public struct Value : IDisposable {
IntPtr type;
#pragma warning disable 0414
long pad1;
long pad2;
#pragma warning restore 0414
public static Value Empty;
public Value (GLib.GType gtype)
{
type = IntPtr.Zero;
pad1 = pad2 = 0;
g_value_init (ref this, gtype.Val);
}
public Value (object obj)
{
type = IntPtr.Zero;
pad1 = pad2 = 0;
GType gtype = (GType) obj.GetType ();
g_value_init (ref this, gtype.Val);
Val = obj;
}
public Value (bool val) : this (GType.Boolean)
{
g_value_set_boolean (ref this, val);
}
public Value (byte val) : this (GType.UChar)
{
g_value_set_uchar (ref this, val);
}
public Value (sbyte val) : this (GType.Char)
{
g_value_set_char (ref this, val);
}
public Value (int val) : this (GType.Int)
{
g_value_set_int (ref this, val);
}
public Value (uint val) : this (GType.UInt)
{
g_value_set_uint (ref this, val);
}
public Value (ushort val) : this (GType.UInt)
{
g_value_set_uint (ref this, val);
}
public Value (long val) : this (GType.Int64)
{
g_value_set_int64 (ref this, val);
}
public Value (ulong val) : this (GType.UInt64)
{
g_value_set_uint64 (ref this, val);
}
public Value (float val) : this (GType.Float)
{
g_value_set_float (ref this, val);
}
public Value (double val) : this (GType.Double)
{
g_value_set_double (ref this, val);
}
public Value (string val) : this (GType.String)
{
IntPtr native_val = GLib.Marshaller.StringToPtrGStrdup (val);
g_value_set_string (ref this, native_val);
GLib.Marshaller.Free (native_val);
}
public Value (ValueArray val) : this (ValueArray.GType)
{
g_value_set_boxed (ref this, val.Handle);
}
public Value (IntPtr val) : this (GType.Pointer)
{
g_value_set_pointer (ref this, val);
}
public Value (Variant variant) : this (GType.Variant)
{
g_value_set_variant (ref this, variant == null ? IntPtr.Zero : variant.Handle);
}
public Value (Opaque val, string type_name)
{
type = IntPtr.Zero;
pad1 = pad2 = 0;
g_value_init (ref this, GType.FromName (type_name).Val);
g_value_set_boxed (ref this, val.Handle);
}
public Value (GLib.Object val) : this (val == null ? GType.Object : val.NativeType)
{
g_value_set_object (ref this, val == null ? IntPtr.Zero : val.Handle);
}
public Value (GLib.GInterfaceAdapter val) : this (val == null ? GType.Object : val.GInterfaceGType)
{
g_value_set_object (ref this, val == null ? IntPtr.Zero : val.Handle);
}
public Value (GLib.Object obj, string prop_name)
{
type = IntPtr.Zero;
pad1 = pad2 = 0;
InitForProperty (obj, prop_name);
}
[Obsolete]
public Value (IntPtr obj, string prop_name, Opaque val)
{
type = IntPtr.Zero;
pad1 = pad2 = 0;
InitForProperty (GLib.Object.GetObject (obj), prop_name);
g_value_set_boxed (ref this, val.Handle);
}
public Value (string[] val) : this (new GLib.GType (g_strv_get_type ()))
{
if (val == null) {
g_value_set_boxed (ref this, IntPtr.Zero);
return;
}
IntPtr native_array = Marshal.AllocHGlobal ((val.Length + 1) * IntPtr.Size);
for (int i = 0; i < val.Length; i++)
Marshal.WriteIntPtr (native_array, i * IntPtr.Size, GLib.Marshaller.StringToPtrGStrdup (val[i]));
Marshal.WriteIntPtr (native_array, val.Length * IntPtr.Size, IntPtr.Zero);
g_value_set_boxed (ref this, native_array);
for (int i = 0; i < val.Length; i++)
GLib.Marshaller.Free (Marshal.ReadIntPtr (native_array, i * IntPtr.Size));
Marshal.FreeHGlobal (native_array);
}
public void Dispose ()
{
g_value_unset (ref this);
}
public void Init (GLib.GType gtype)
{
g_value_init (ref this, gtype.Val);
}
public static explicit operator bool (Value val)
{
return g_value_get_boolean (ref val);
}
public static explicit operator byte (Value val)
{
return g_value_get_uchar (ref val);
}
public static explicit operator sbyte (Value val)
{
return g_value_get_char (ref val);
}
public static explicit operator int (Value val)
{
return g_value_get_int (ref val);
}
public static explicit operator uint (Value val)
{
return g_value_get_uint (ref val);
}
public static explicit operator ushort (Value val)
{
return (ushort) g_value_get_uint (ref val);
}
public static explicit operator long (Value val)
{
if (val.type == GType.Long.Val)
return val.GetLongForPlatform ();
else
return g_value_get_int64 (ref val);
}
public static explicit operator ulong (Value val)
{
if (val.type == GType.ULong.Val)
return val.GetULongForPlatform ();
else
return g_value_get_uint64 (ref val);
}
public static explicit operator Enum (Value val)
{
if (val.HoldsFlags)
return (Enum)Enum.ToObject (GType.LookupType (val.type), g_value_get_flags (ref val));
else
return (Enum)Enum.ToObject (GType.LookupType (val.type), g_value_get_enum (ref val));
}
public static explicit operator float (Value val)
{
return g_value_get_float (ref val);
}
public static explicit operator double (Value val)
{
return g_value_get_double (ref val);
}
public static explicit operator string (Value val)
{
IntPtr str = g_value_get_string (ref val);
return str == IntPtr.Zero ? null : GLib.Marshaller.Utf8PtrToString (str);
}
public static explicit operator ValueArray (Value val)
{
return new ValueArray (g_value_get_boxed (ref val));
}
public static explicit operator IntPtr (Value val)
{
return g_value_get_pointer (ref val);
}
public static explicit operator GLib.Opaque (Value val)
{
return GLib.Opaque.GetOpaque (g_value_get_boxed (ref val), (Type) new GType (val.type), false);
}
public static explicit operator GLib.Variant (Value Val)
{
return new Variant (g_value_get_variant (ref Val));
}
public static explicit operator GLib.VariantType (Value val)
{
return new VariantType (g_value_get_boxed (ref val));
}
public static explicit operator GLib.Object (Value val)
{
return GLib.Object.GetObject (g_value_get_object (ref val), false);
}
public static explicit operator string[] (Value val)
{
IntPtr native_array = g_value_get_boxed (ref val);
if (native_array == IntPtr.Zero)
return null;
int count = 0;
while (Marshal.ReadIntPtr (native_array, count * IntPtr.Size) != IntPtr.Zero)
count++;
string[] strings = new string[count];
for (int i = 0; i < count; i++)
strings[i] = GLib.Marshaller.Utf8PtrToString (Marshal.ReadIntPtr (native_array, i * IntPtr.Size));
return strings;
}
object ToRegisteredType () {
Type t = GLib.GType.LookupType (type);
ConstructorInfo ci = null;
try {
while (ci == null && t != null) {
if (!t.IsAbstract)
ci = t.GetConstructor (new Type[] { typeof (GLib.Value) });
if (ci == null)
t = t.BaseType;
}
} catch (Exception) {
ci = null;
}
if (ci == null)
throw new Exception ("Unknown type " + new GType (type).ToString ());
return ci.Invoke (new object[] {this});
}
void FromRegisteredType (object val) {
Type t = GLib.GType.LookupType (type);
MethodInfo mi = null;
try {
while (mi == null && t != null) {
mi = t.GetMethod ("SetGValue", new Type[] { Type.GetType ("GLib.Value&") });
if (mi != null && (mi.IsAbstract || mi.ReturnType != typeof (void)))
mi = null;
if (mi == null)
t = t.BaseType;
}
} catch (Exception) {
mi = null;
}
if (mi == null)
throw new Exception ("Unknown type " + new GType (type).ToString ());
object[] parameters = new object[] { this };
mi.Invoke (val, parameters);
this = (GLib.Value) parameters[0];
}
long GetLongForPlatform ()
{
switch (Environment.OSVersion.Platform) {
case PlatformID.Win32NT:
case PlatformID.Win32S:
case PlatformID.Win32Windows:
case PlatformID.WinCE:
return (long) g_value_get_long_as_int (ref this);
default:
return g_value_get_long (ref this).ToInt64 ();
}
}
ulong GetULongForPlatform ()
{
switch (Environment.OSVersion.Platform) {
case PlatformID.Win32NT:
case PlatformID.Win32S:
case PlatformID.Win32Windows:
case PlatformID.WinCE:
return (ulong) g_value_get_ulong_as_uint (ref this);
default:
return g_value_get_ulong (ref this).ToUInt64 ();
}
}
void SetLongForPlatform (long val)
{
switch (Environment.OSVersion.Platform) {
case PlatformID.Win32NT:
case PlatformID.Win32S:
case PlatformID.Win32Windows:
case PlatformID.WinCE:
g_value_set_long (ref this, (int) val);
break;
default:
g_value_set_long (ref this, new IntPtr (val));
break;
}
}
void SetULongForPlatform (ulong val)
{
switch (Environment.OSVersion.Platform) {
case PlatformID.Win32NT:
case PlatformID.Win32S:
case PlatformID.Win32Windows:
case PlatformID.WinCE:
g_value_set_ulong (ref this, (uint) val);
break;
default:
g_value_set_ulong (ref this, new UIntPtr (val));
break;
}
}
object ToEnum ()
{
Type t = GType.LookupType (type);
if (t == null) {
if (HoldsFlags)
return g_value_get_flags (ref this);
else
return g_value_get_enum (ref this);
} else {
return (Enum) this;
}
}
object ToBoxed ()
{
IntPtr boxed_ptr = g_value_get_boxed (ref this);
if (boxed_ptr == IntPtr.Zero)
return null;
Type t = GType.LookupType (type);
if (t == null)
throw new Exception ("Unknown type " + new GType (type).ToString ());
else if (t.IsSubclassOf (typeof (GLib.Opaque)))
return (GLib.Opaque) this;
MethodInfo mi = t.GetMethod ("New", BindingFlags.Static | BindingFlags.Public | BindingFlags.FlattenHierarchy);
if (mi != null)
return mi.Invoke (null, new object[] {boxed_ptr});
ConstructorInfo ci = t.GetConstructor (new Type[] { typeof(IntPtr) });
if (ci != null)
return ci.Invoke (new object[] { boxed_ptr });
return Marshal.PtrToStructure (boxed_ptr, t);
}
public object Val
{
get {
if (type == GType.Boolean.Val)
return (bool) this;
else if (type == GType.UChar.Val)
return (byte) this;
else if (type == GType.Char.Val)
return (sbyte) this;
else if (type == GType.Int.Val)
return (int) this;
else if (type == GType.UInt.Val)
return (uint) this;
else if (type == GType.Int64.Val)
return (long) this;
else if (type == GType.Long.Val)
return GetLongForPlatform ();
else if (type == GType.UInt64.Val)
return (ulong) this;
else if (type == GType.ULong.Val)
return GetULongForPlatform ();
else if (GType.Is (type, GType.Enum) ||
GType.Is (type, GType.Flags))
return ToEnum ();
else if (type == GType.Float.Val)
return (float) this;
else if (type == GType.Double.Val)
return (double) this;
else if (type == GType.String.Val)
return (string) this;
else if (type == GType.Pointer.Val)
return (IntPtr) this;
else if (type == GType.Variant.Val)
return (GLib.Variant) this;
else if (type == GType.Param.Val)
return g_value_get_param (ref this);
else if (type == ValueArray.GType.Val)
return new ValueArray (g_value_get_boxed (ref this));
else if (type == ManagedValue.GType.Val)
return ManagedValue.ObjectForWrapper (g_value_get_boxed (ref this));
else if (GType.Is (type, GType.Object))
return (GLib.Object) this;
else if (GType.Is (type, GType.Boxed))
return ToBoxed ();
else if (GType.LookupType (type) != null)
return ToRegisteredType ();
else if (type == IntPtr.Zero)
return null;
else
throw new Exception ("Unknown type " + new GType (type).ToString ());
}
set {
if (type == GType.Boolean.Val)
g_value_set_boolean (ref this, (bool) value);
else if (type == GType.UChar.Val)
g_value_set_uchar (ref this, (byte) value);
else if (type == GType.Char.Val)
g_value_set_char (ref this, (sbyte) value);
else if (type == GType.Int.Val)
g_value_set_int (ref this, (int) value);
else if (type == GType.UInt.Val)
g_value_set_uint (ref this, (uint) value);
else if (type == GType.Int64.Val)
g_value_set_int64 (ref this, (long) value);
else if (type == GType.Long.Val)
SetLongForPlatform ((long) value);
else if (type == GType.UInt64.Val)
g_value_set_uint64 (ref this, (ulong) value);
else if (type == GType.ULong.Val)
SetULongForPlatform (Convert.ToUInt64 (value));
else if (GType.Is (type, GType.Enum))
g_value_set_enum (ref this, (int)value);
else if (GType.Is (type, GType.Flags))
g_value_set_flags (ref this, (uint)(int)value);
else if (type == GType.Float.Val)
g_value_set_float (ref this, (float) value);
else if (type == GType.Double.Val)
g_value_set_double (ref this, (double) value);
else if (type == GType.Variant.Val)
g_value_set_variant (ref this, ((GLib.Variant) value).Handle);
else if (type == GType.String.Val) {
IntPtr native = GLib.Marshaller.StringToPtrGStrdup ((string)value);
g_value_set_string (ref this, native);
GLib.Marshaller.Free (native);
} else if (type == GType.Pointer.Val) {
if (value.GetType () == typeof (IntPtr)) {
g_value_set_pointer (ref this, (IntPtr) value);
return;
} else if (value is IWrapper) {
g_value_set_pointer (ref this, ((IWrapper)value).Handle);
return;
}
IntPtr buf = Marshal.AllocHGlobal (Marshal.SizeOf (value.GetType()));
Marshal.StructureToPtr (value, buf, false);
g_value_set_pointer (ref this, buf);
} else if (type == GType.Param.Val) {
g_value_set_param (ref this, (IntPtr) value);
} else if (type == ValueArray.GType.Val) {
g_value_set_boxed (ref this, ((ValueArray) value).Handle);
} else if (type == ManagedValue.GType.Val) {
IntPtr wrapper = ManagedValue.WrapObject (value);
g_value_set_boxed (ref this, wrapper);
ManagedValue.ReleaseWrapper (wrapper);
} else if (GType.Is (type, GType.Object))
if(value is GLib.Object)
g_value_set_object (ref this, (value as GLib.Object).Handle);
else
g_value_set_object (ref this, ((GInterfaceAdapter)value).Handle);
else if (GType.Is (type, GType.Boxed)) {
if (value is IWrapper) {
g_value_set_boxed (ref this, ((IWrapper)value).Handle);
return;
}
IntPtr buf = Marshaller.StructureToPtrAlloc (value);
g_value_set_boxed (ref this, buf);
Marshal.FreeHGlobal (buf);
} else if (GLib.GType.LookupType (type) != null) {
FromRegisteredType (value);
} else
throw new Exception ("Unknown type " + new GType (type).ToString ());
}
}
internal void Update (object val)
{
if (GType.Is (type, GType.Boxed) && !(val is IWrapper)) {
MethodInfo mi = val.GetType ().GetMethod ("Update", BindingFlags.NonPublic | BindingFlags.Instance);
IntPtr boxed_ptr = g_value_get_boxed (ref this);
if (mi == null)
Marshal.StructureToPtr (val, boxed_ptr, false);
else
mi.Invoke (val, null);
}
}
bool HoldsFlags {
get { return g_type_check_value_holds (ref this, GType.Flags.Val); }
}
void InitForProperty (Object obj, string name)
{
GType gtype = obj.NativeType;
InitForProperty (gtype, name);
}
void InitForProperty (GType gtype, string name)
{
IntPtr p_name = Marshaller.StringToPtrGStrdup (name);
IntPtr spec_ptr = g_object_class_find_property (gtype.GetClassPtr (), p_name);
Marshaller.Free (p_name);
if (spec_ptr == IntPtr.Zero)
throw new Exception (String.Format ("No property with name '{0}' in type '{1}'", name, gtype.ToString()));
ParamSpec spec = new ParamSpec (spec_ptr);
g_value_init (ref this, spec.ValueType.Val);
}
[DllImport (Global.GObjectNativeDll, CallingConvention = CallingConvention.Cdecl)]
static extern IntPtr g_object_class_find_property (IntPtr klass, IntPtr name);
[DllImport (Global.GObjectNativeDll, CallingConvention = CallingConvention.Cdecl)]
static extern bool g_type_check_value_holds (ref Value val, IntPtr gtype);
[DllImport (Global.GObjectNativeDll, CallingConvention = CallingConvention.Cdecl)]
static extern void g_value_init (ref GLib.Value val, IntPtr gtype);
[DllImport (Global.GObjectNativeDll, CallingConvention = CallingConvention.Cdecl)]
static extern void g_value_unset (ref GLib.Value val);
[DllImport (Global.GObjectNativeDll, CallingConvention = CallingConvention.Cdecl)]
static extern void g_value_set_boolean (ref Value val, bool data);
[DllImport (Global.GObjectNativeDll, CallingConvention = CallingConvention.Cdecl)]
static extern void g_value_set_uchar (ref Value val, byte data);
[DllImport (Global.GObjectNativeDll, CallingConvention = CallingConvention.Cdecl)]
static extern void g_value_set_char (ref Value val, sbyte data);
[DllImport (Global.GObjectNativeDll, CallingConvention = CallingConvention.Cdecl)]
static extern void g_value_set_boxed (ref Value val, IntPtr data);
[DllImport (Global.GObjectNativeDll, CallingConvention = CallingConvention.Cdecl)]
static extern void g_value_set_double (ref Value val, double data);
[DllImport (Global.GObjectNativeDll, CallingConvention = CallingConvention.Cdecl)]
static extern void g_value_set_float (ref Value val, float data);
[DllImport (Global.GObjectNativeDll, CallingConvention = CallingConvention.Cdecl)]
static extern void g_value_set_int (ref Value val, int data);
[DllImport (Global.GObjectNativeDll, CallingConvention = CallingConvention.Cdecl)]
static extern void g_value_set_int64 (ref Value val, long data);
[DllImport (Global.GObjectNativeDll, CallingConvention = CallingConvention.Cdecl)]
static extern void g_value_set_long (ref Value val, IntPtr data);
[DllImport (Global.GObjectNativeDll, CallingConvention = CallingConvention.Cdecl)]
static extern void g_value_set_long (ref Value val, int data);
[DllImport (Global.GObjectNativeDll, CallingConvention = CallingConvention.Cdecl)]
static extern void g_value_set_uint64 (ref Value val, ulong data);
[DllImport (Global.GObjectNativeDll, CallingConvention = CallingConvention.Cdecl)]
static extern void g_value_set_object (ref Value val, IntPtr data);
[DllImport (Global.GObjectNativeDll, CallingConvention = CallingConvention.Cdecl)]
static extern void g_value_set_param (ref Value val, IntPtr data);
[DllImport (Global.GObjectNativeDll, CallingConvention = CallingConvention.Cdecl)]
static extern void g_value_set_pointer (ref Value val, IntPtr data);
[DllImport (Global.GObjectNativeDll, CallingConvention = CallingConvention.Cdecl)]
static extern void g_value_set_string (ref Value val, IntPtr data);
[DllImport (Global.GObjectNativeDll, CallingConvention = CallingConvention.Cdecl)]
static extern void g_value_set_uint (ref Value val, uint data);
[DllImport (Global.GObjectNativeDll, CallingConvention = CallingConvention.Cdecl)]
static extern void g_value_set_ulong (ref Value val, UIntPtr data);
[DllImport (Global.GObjectNativeDll, CallingConvention = CallingConvention.Cdecl)]
static extern void g_value_set_ulong (ref Value val, uint data);
[DllImport (Global.GObjectNativeDll, CallingConvention = CallingConvention.Cdecl)]
static extern void g_value_set_enum (ref Value val, int data);
[DllImport (Global.GObjectNativeDll, CallingConvention = CallingConvention.Cdecl)]
static extern void g_value_set_flags (ref Value val, uint data);
[DllImport (Global.GObjectNativeDll, CallingConvention = CallingConvention.Cdecl)]
static extern void g_value_set_variant (ref Value val, IntPtr data);
[DllImport (Global.GObjectNativeDll, CallingConvention = CallingConvention.Cdecl)]
static extern bool g_value_get_boolean (ref Value val);
[DllImport (Global.GObjectNativeDll, CallingConvention = CallingConvention.Cdecl)]
static extern byte g_value_get_uchar (ref Value val);
[DllImport (Global.GObjectNativeDll, CallingConvention = CallingConvention.Cdecl)]
static extern sbyte g_value_get_char (ref Value val);
[DllImport (Global.GObjectNativeDll, CallingConvention = CallingConvention.Cdecl)]
static extern IntPtr g_value_get_boxed (ref Value val);
[DllImport (Global.GObjectNativeDll, CallingConvention = CallingConvention.Cdecl)]
static extern double g_value_get_double (ref Value val);
[DllImport (Global.GObjectNativeDll, CallingConvention = CallingConvention.Cdecl)]
static extern float g_value_get_float (ref Value val);
[DllImport (Global.GObjectNativeDll, CallingConvention = CallingConvention.Cdecl)]
static extern int g_value_get_int (ref Value val);
[DllImport (Global.GObjectNativeDll, CallingConvention = CallingConvention.Cdecl)]
static extern long g_value_get_int64 (ref Value val);
[DllImport (Global.GObjectNativeDll, CallingConvention = CallingConvention.Cdecl)]
static extern IntPtr g_value_get_long (ref Value val);
[DllImport (Global.GObjectNativeDll, EntryPoint = "g_value_get_long", CallingConvention = CallingConvention.Cdecl)]
static extern int g_value_get_long_as_int (ref Value val);
[DllImport (Global.GObjectNativeDll, CallingConvention = CallingConvention.Cdecl)]
static extern ulong g_value_get_uint64 (ref Value val);
[DllImport (Global.GObjectNativeDll, CallingConvention = CallingConvention.Cdecl)]
static extern UIntPtr g_value_get_ulong (ref Value val);
[DllImport (Global.GObjectNativeDll, EntryPoint = "g_value_get_ulong", CallingConvention = CallingConvention.Cdecl)]
static extern int g_value_get_ulong_as_uint (ref Value val);
[DllImport (Global.GObjectNativeDll, CallingConvention = CallingConvention.Cdecl)]
static extern IntPtr g_value_get_object (ref Value val);
[DllImport (Global.GObjectNativeDll, CallingConvention = CallingConvention.Cdecl)]
static extern IntPtr g_value_get_param (ref Value val);
[DllImport (Global.GObjectNativeDll, CallingConvention = CallingConvention.Cdecl)]
static extern IntPtr g_value_get_pointer (ref Value val);
[DllImport (Global.GObjectNativeDll, CallingConvention = CallingConvention.Cdecl)]
static extern IntPtr g_value_get_string (ref Value val);
[DllImport (Global.GObjectNativeDll, CallingConvention = CallingConvention.Cdecl)]
static extern uint g_value_get_uint (ref Value val);
[DllImport (Global.GObjectNativeDll, CallingConvention = CallingConvention.Cdecl)]
static extern int g_value_get_enum (ref Value val);
[DllImport (Global.GObjectNativeDll, CallingConvention = CallingConvention.Cdecl)]
static extern uint g_value_get_flags (ref Value val);
[DllImport (Global.GObjectNativeDll, CallingConvention = CallingConvention.Cdecl)]
static extern IntPtr g_strv_get_type ();
[DllImport (Global.GObjectNativeDll, CallingConvention = CallingConvention.Cdecl)]
static extern IntPtr g_value_get_variant (ref Value val);
}
}
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