Strip source generator attributes by default

Define "MVVMTOOLKIT_KEEP_SOURCE_GENERATOR_ATTRIBUTES" to keep them

Author: Sergio0694

CommunityToolkit.Mvvm/ComponentModel/Attributes/AlsoNotifyCanExecuteForAttribute.cs

@@ -3,6 +3,7 @@
 // See the LICENSE file in the project root for more information.
 
 using System;
+using System.Diagnostics;
 using System.Linq;
 using CommunityToolkit.Mvvm.Input;
 
@@ -49,6 +50,7 @@ namespace CommunityToolkit.Mvvm.ComponentModel;
 /// </code>
 /// </summary>
 [AttributeUsage(AttributeTargets.Field, AllowMultiple = true, Inherited = false)]
+[Conditional("MVVMTOOLKIT_KEEP_SOURCE_GENERATOR_ATTRIBUTES")]
 public sealed class AlsoNotifyCanExecuteForAttribute : Attribute
 {
     /// <summary>

CommunityToolkit.Mvvm/ComponentModel/Attributes/AlsoNotifyChangeForAttribute.cs

@@ -4,6 +4,7 @@
 
 using System;
 using System.ComponentModel;
+using System.Diagnostics;
 using System.Linq;
 
 namespace CommunityToolkit.Mvvm.ComponentModel;
@@ -68,6 +69,7 @@ namespace CommunityToolkit.Mvvm.ComponentModel;
 /// </code>
 /// </summary>
 [AttributeUsage(AttributeTargets.Field, AllowMultiple = true, Inherited = false)]
+[Conditional("MVVMTOOLKIT_KEEP_SOURCE_GENERATOR_ATTRIBUTES")]
 public sealed class AlsoNotifyChangeForAttribute : Attribute
 {
     /// <summary>

CommunityToolkit.Mvvm/ComponentModel/Attributes/INotifyPropertyChangedAttribute.cs

@@ -4,6 +4,7 @@
 
 using System;
 using System.ComponentModel;
+using System.Diagnostics;
 
 namespace CommunityToolkit.Mvvm.ComponentModel;
 
@@ -24,6 +25,7 @@ namespace CommunityToolkit.Mvvm.ComponentModel;
 /// </para>
 /// </summary>
 [AttributeUsage(AttributeTargets.Class, AllowMultiple = false, Inherited = false)]
+[Conditional("MVVMTOOLKIT_KEEP_SOURCE_GENERATOR_ATTRIBUTES")]
 public sealed class INotifyPropertyChangedAttribute : Attribute
 {
     /// <summary>

CommunityToolkit.Mvvm/ComponentModel/Attributes/ObservableObjectAttribute.cs

@@ -4,6 +4,7 @@
 
 using System;
 using System.ComponentModel;
+using System.Diagnostics;
 
 namespace CommunityToolkit.Mvvm.ComponentModel;
 
@@ -26,6 +27,7 @@ namespace CommunityToolkit.Mvvm.ComponentModel;
 /// And with this, the same APIs from <see cref="ObservableObject"/> will be available on this type as well.
 /// </summary>
 [AttributeUsage(AttributeTargets.Class, AllowMultiple = false, Inherited = false)]
+[Conditional("MVVMTOOLKIT_KEEP_SOURCE_GENERATOR_ATTRIBUTES")]
 public sealed class ObservableObjectAttribute : Attribute
 {
 }

CommunityToolkit.Mvvm/ComponentModel/Attributes/ObservablePropertyAttribute.cs

@@ -4,6 +4,7 @@
 
 using System;
 using System.ComponentModel;
+using System.Diagnostics;
 
 namespace CommunityToolkit.Mvvm.ComponentModel;
 
@@ -51,6 +52,7 @@ namespace CommunityToolkit.Mvvm.ComponentModel;
 /// source field name will be converted to uppercase (eg. <c>isEnabled</c> to <c>IsEnabled</c>).
 /// </remarks>
 [AttributeUsage(AttributeTargets.Field, AllowMultiple = false, Inherited = false)]
+[Conditional("MVVMTOOLKIT_KEEP_SOURCE_GENERATOR_ATTRIBUTES")]
 public sealed class ObservablePropertyAttribute : Attribute
 {
 }

CommunityToolkit.Mvvm/ComponentModel/Attributes/ObservableRecipientAttribute.cs

@@ -3,6 +3,7 @@
 // See the LICENSE file in the project root for more information.
 
 using System;
+using System.Diagnostics;
 
 namespace CommunityToolkit.Mvvm.ComponentModel;
 
@@ -40,6 +41,7 @@ namespace CommunityToolkit.Mvvm.ComponentModel;
 /// If this condition is not met, the code will fail to build.
 /// </remarks>
 [AttributeUsage(AttributeTargets.Class, AllowMultiple = false, Inherited = false)]
+[Conditional("MVVMTOOLKIT_KEEP_SOURCE_GENERATOR_ATTRIBUTES")]
 public sealed class ObservableRecipientAttribute : Attribute
 {
 }

CommunityToolkit.Mvvm/Input/Attributes/ICommandAttribute.cs

@@ -3,6 +3,7 @@
 // See the LICENSE file in the project root for more information.
 
 using System;
+using System.Diagnostics;
 using System.Windows.Input;
 
 namespace CommunityToolkit.Mvvm.Input;
@@ -60,6 +61,7 @@ namespace CommunityToolkit.Mvvm.Input;
 /// </para>
 /// </summary>
 [AttributeUsage(AttributeTargets.Method, AllowMultiple = false, Inherited = false)]
+[Conditional("MVVMTOOLKIT_KEEP_SOURCE_GENERATOR_ATTRIBUTES")]
 public sealed class ICommandAttribute : Attribute
 {
     /// <summary>