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// Copyright (c) 2010-2014 SharpDX - Alexandre Mutel
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
using
System
;
using
System
.
ComponentModel
;
using
System
.
Diagnostics
;
using
System
.
Runtime
.
CompilerServices
;
using
System
.
Threading
;
using
SharpGen
.
Runtime
.
Diagnostics
;
namespace
SharpGen
.
Runtime
;
/// <summary>
/// Root class for all native interop objects.
/// </summary>
public
class
CppObject
:
DisposeBase
,
ICallbackable
,
IEquatable
<
CppObject
>
{
/// <summary>
/// The native pointer
/// </summary>
[
DebuggerBrowsable
(
DebuggerBrowsableState
.
Never
)
]
private
IntPtr
_nativePointer
;
private
static
readonly
ConditionalWeakTable
<
CppObject
,
object
>
TagTable
=
new
(
)
;
/// <summary>
/// Gets or sets a custom user tag object to associate with this instance.
/// </summary>
/// <value>The tag object.</value>
[
EditorBrowsable
(
EditorBrowsableState
.
Advanced
)
]
public
object
Tag
{
get
=>
TagTable
.
TryGetValue
(
this
,
out
var
tag
)
?
tag
:
null
;
set
=>
TagTable
.
Add
(
this
,
value
)
;
}
/// <summary>
/// Default constructor.
/// </summary>
/// <param name = "pointer">Pointer to C++ object</param>
public
CppObject
(
IntPtr
pointer
)
{
_nativePointer
=
pointer
;
if
(
ObjectTrackerReadOnlyConfiguration
.
IsEnabled
)
ObjectTracker
.
Track
(
this
,
pointer
)
;
}
/// <summary>
/// Default constructor.
/// </summary>
/// <param name = "pointer">Pointer to C++ object</param>
public
unsafe
CppObject
(
UIntPtr
pointer
)
:
this
(
new
IntPtr
(
pointer
.
ToPointer
(
)
)
)
{
}
/// <summary>
/// Initializes a new instance of the <see cref="CppObject"/> class.
/// </summary>
protected
CppObject
(
)
{
}
/// <summary>
/// Get a pointer to the underlying Cpp Object
/// </summary>
public
IntPtr
NativePointer
{
[
MethodImpl
(
Utilities
.
MethodAggressiveOptimization
)
]
get
=>
_nativePointer
;
set
{
var
oldNativePointer
=
Interlocked
.
Exchange
(
ref
_nativePointer
,
value
)
;
if
(
oldNativePointer
==
value
)
return
;
if
(
ObjectTrackerReadOnlyConfiguration
.
IsEnabled
)
ObjectTracker
.
MigrateNativePointer
(
this
,
oldNativePointer
,
value
)
;
NativePointerUpdated
(
oldNativePointer
)
;
}
}
public
override
string
ToString
(
)
=>
Utilities
.
FormatPointer
(
NativePointer
)
;
public
static
explicit
operator
IntPtr
(
CppObject
cppObject
)
=>
cppObject
?
.
NativePointer
??
IntPtr
.
Zero
;
/// <summary>
/// Method called when the <see cref="NativePointer"/> is updated.
/// </summary>
protected
virtual
void
NativePointerUpdated
(
IntPtr
oldNativePointer
)
{
}
protected
unsafe
void
*
this
[
int
index
]
{
[
MethodImpl
(
Utilities
.
MethodAggressiveOptimization
)
]
#if
DEBUG
get
{
Debug
.
Assert
(
!
IsDisposed
)
;
return
(
*
(
void
*
*
*
)
_nativePointer
)
[
index
]
;
}
#else
get
=>
(
*
(
void
*
*
*
)
_nativePointer
)
[
index
]
;
#endif
}
protected unsafe
void
*
this
[
uint
index
]
{
[
MethodImpl
(
Utilities
.
MethodAggressiveOptimization
)
]
#if
DEBUG
get
{
Debug
.
Assert
(
!
IsDisposed
)
;
return
(
*
(
void
*
*
*
)
_nativePointer
)
[
index
]
;
}
#else
get
=>
(
*
(
void
*
*
*
)
_nativePointer
)
[
index
]
;
#endif
}
protected unsafe
void
*
this
[
nint
index
]
{
[
MethodImpl
(
Utilities
.
MethodAggressiveOptimization
)
]
#if
DEBUG
get
{
Debug
.
Assert
(
!
IsDisposed
)
;
return
(
*
(
void
*
*
*
)
_nativePointer
)
[
index
]
;
}
#else
get
=>
(
*
(
void
*
*
*
)
_nativePointer
)
[
index
]
;
#endif
}
protected unsafe
void
*
this
[
nuint
index
]
{
[
MethodImpl
(
Utilities
.
MethodAggressiveOptimization
)
]
#if
DEBUG
get
{
Debug
.
Assert
(
!
IsDisposed
)
;
return
(
*
(
void
*
*
*
)
_nativePointer
)
[
index
]
;
}
#else
get
=>
(
*
(
void
*
*
*
)
_nativePointer
)
[
index
]
;
#endif
}
[
DebuggerBrowsable
(
DebuggerBrowsableState
.
Never
)
]
protected override
bool
IsDisposed
=>
NativePointer
==
IntPtr
.
Zero
;
protected sealed override
void
Dispose
(
bool
disposing
)
{
var
nativePointer
=
NativePointer
;
DisposeCore
(
nativePointer
,
disposing
)
;
if
(
ObjectTrackerReadOnlyConfiguration
.
IsEnabled
)
ObjectTracker
.
Untrack
(
this
,
nativePointer
)
;
// Set pointer to null (using protected members in order to avoid callbacks).
#if DEBUG
var oldNativePointer
=
Interlocked
.
Exchange
(
ref
_nativePointer
,
IntPtr
.
Zero
)
;
Debug
.
Assert
(
oldNativePointer
==
nativePointer
)
;
#else
Interlocked
.
Exchange
(
ref
_nativePointer
,
IntPtr
.
Zero
)
;
#endif
NativePointerUpdated
(
nativePointer
)
;
}
/// <summary>
/// Releases unmanaged and - optionally - managed resources
/// </summary>
/// <param name="nativePointer"><see cref="NativePointer"/></param>
/// <param name="disposing"><c>true</c> to release both managed and unmanaged resources; <c>false</c> to release only unmanaged resources.</param>
protected virtual
void
DisposeCore
(
IntPtr
nativePointer
,
bool
disposing
)
{
}
public
bool
Equals
(
CppObject
other
)
{
if
(
ReferenceEquals
(
null
,
other
)
)
return false
;
return
ReferenceEquals
(
this
,
other
)
||
_nativePointer
.
Equals
(
other
.
_nativePointer
)
;
}
public override
bool
Equals
(
object
obj
)
=>
ReferenceEquals
(
this
,
obj
)
||
obj
is
CppObject
other
&&
_nativePointer
.
Equals
(
other
.
_nativePointer
)
;
public override
int
GetHashCode
(
)
=>
_nativePointer
.
GetHashCode
(
)
;
public
static
bool
operator
==
(
CppObject
left
,
CppObject
right
)
=>
Equals
(
left
,
right
)
;
public
static
bool
operator
!=
(
CppObject
left
,
CppObject
right
)
=>
!
Equals
(
left
,
right
)
;
}
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