feat: Complete Guard.IgnoreException families.

feat: Add XML documentation to some methods and classes.
remove: Cleanup BootUnit for rewriting.

Assets/Main/Resources/Ca2d/Toolkit.meta

@@ -1,3 +0,0 @@
-fileFormatVersion: 2
-guid: 682379589b9245c194f6d38b178c8a7b
-timeCreated: 1712972381

Assets/Main/Scripts/Bootable.meta

@@ -1,3 +0,0 @@
-fileFormatVersion: 2
-guid: 1fdfef18a5d440bb8214c941d439e605
-timeCreated: 1712972698

Assets/Main/Scripts/Bootable/BootDescription.cs

@@ -1,11 +0,0 @@
-namespace Ca2d.Toolkit.Bootable
-{
-    public struct BootDescription
-    {
-        public readonly string Id;
-
-        public readonly IBootCondition Condition;
-
-        public readonly IBootExecutor[] Executors;
-    }
-}

Assets/Main/Scripts/Bootable/BootDescription.cs.meta

@@ -1,3 +0,0 @@
-fileFormatVersion: 2
-guid: 6ce9da660f08484f8ccebff2aaf3a825
-timeCreated: 1713192001

Assets/Main/Scripts/Bootable/BootState.cs

@@ -1,17 +0,0 @@
-namespace Ca2d.Toolkit.Bootable
-{
-    public enum BootState
-    {
-        Created = 0,
-        
-        Pending = 1,
-        
-        Prepare = 2,
-        
-        Running = 3,
-        
-        Exit = 4,
-        
-        Fatal = 5
-    }
-}

Assets/Main/Scripts/Bootable/BootState.cs.meta

@@ -1,3 +0,0 @@
-fileFormatVersion: 2
-guid: ddd6ed54d6c24afa90dbe41a9cedbe22
-timeCreated: 1713193446

Assets/Main/Scripts/Bootable/IBootCondition.cs

@@ -1,7 +0,0 @@
-namespace Ca2d.Toolkit.Bootable
-{
-    public class IBootCondition
-    {
-        
-    }
-}

Assets/Main/Scripts/Bootable/IBootCondition.cs.meta

@@ -1,3 +0,0 @@
-fileFormatVersion: 2
-guid: d711f6a53d984d4ab120859e20193edc
-timeCreated: 1713192171

Assets/Main/Scripts/Bootable/IBootExecutor.cs

@@ -1,14 +0,0 @@
-using System;
-using Cysharp.Threading.Tasks;
-
-namespace Ca2d.Toolkit.Bootable
-{
-    public interface IBootExecutor
-    {
-        public bool FatalAsExit { get; }
-        
-        public BootState RegisteredStage { get; }
-
-        public Func<UniTask<bool>> Runner { get; }
-    }
-}

Assets/Main/Scripts/Bootable/IBootExecutor.cs.meta

@@ -1,3 +0,0 @@
-fileFormatVersion: 2
-guid: e5221434446d45f9904f24ab2f9f4f3d
-timeCreated: 1713193262

Assets/Main/Scripts/Boxing.cs

@@ -0,0 +1,75 @@
+using System;
+using UnityEngine;
+using UnityEngine.UIElements;
+
+namespace Ca2d.Toolkit
+{
+    /// <summary>
+    /// An utility which gives a type safe boxing.
+    /// </summary>
+    /// <typeparam name="T">The value type which will being boxing.</typeparam>
+    [Serializable]
+    public class Boxing<T> where T : struct
+    {
+        [SerializeField] private T m_value;
+
+        /// <summary>
+        /// Create a copy of given boxing source.
+        /// </summary>
+        public Boxing(Boxing<T> source)
+        {
+            m_value = source.Unbox;
+        }
+        
+        /// <summary>
+        /// Create a copy of given value.
+        /// </summary>
+        public Boxing(T value)
+        {
+            m_value = value;
+        }
+        
+        /// <summary>
+        /// Create a empty boxing.
+        /// </summary>
+        public Boxing()
+        {}
+
+        /// <summary>
+        /// Get a copy of boxing value.
+        /// </summary>
+        public T Unbox
+        {
+            get => m_value;
+            set => m_value = value;
+        }
+
+        /// <summary>
+        /// Access to the boxing value directly.
+        /// </summary>
+        public ref T Direct => ref m_value;
+
+        /// <summary>
+        /// Clean this boxing container to the default value of boxing target.
+        /// </summary>
+        public void Empty()
+        {
+            m_value = default;
+        }
+
+        public override string ToString()
+        {
+            return m_value.ToString();
+        }
+
+        public static implicit operator T(Boxing<T> wrapper)
+        {
+            return wrapper.Unbox;
+        }
+
+        public static implicit operator Boxing<T>(T value)
+        {
+            return new Boxing<T>(value);
+        }
+    }
+}

Assets/Main/Scripts/Exceptions.meta

@@ -1,3 +0,0 @@
-fileFormatVersion: 2
-guid: 4f6e1e1705424ac39408a10837b49e52
-timeCreated: 1713285459

Assets/Main/Scripts/Log.cs

@@ -378,6 +378,9 @@ namespace Ca2d.Toolkit
         
         public void Error(string text)
         {}
+        
+        public void Error(Exception err)
+        {}
     }
     
     public static class QLog

Assets/Main/Scripts/LoseRequirementException.cs

@@ -0,0 +1,25 @@
+using System;
+
+namespace Ca2d.Toolkit
+{
+    public class LoseRequirementException : Exception
+    {
+        public Type RequiredType { get; }
+
+        public LoseRequirementException(Type type) : base($"Required type {type?.FullName} was lost when resolving.")
+        {
+            RequiredType = type;
+        }
+        
+        public LoseRequirementException(Object obj) : base($"Required type {obj?.GetType().FullName} was lost when resolving.")
+        {
+            RequiredType = obj?.GetType();
+        }
+        
+        
+        public LoseRequirementException(ValueType obj) : base($"Required type {obj.GetType().FullName} was lost when resolving.")
+        {
+            RequiredType = obj.GetType();
+        }
+    }
+}

Assets/Main/Scripts/LoseRequirementException.cs.meta

@@ -0,0 +1,3 @@
+fileFormatVersion: 2
+guid: 9e6b670f1e074609bca59e1042256991
+timeCreated: 1715182584

Assets/Main/Scripts/Option.cs

@@ -3,6 +3,11 @@ using UnityEngine.Assertions;
 
 namespace Ca2d.Toolkit
 {
+    /// <summary>
+    /// An utility structure which helps you to create an optional field in Unity Editor or a <see cref="Nullable"/>
+    /// alternative.
+    /// </summary>
+    /// <typeparam name="T">The type which will be optional.</typeparam>
     [Serializable]
     public struct Option<T>
     {

Assets/Main/Scripts/Ref.cs

@@ -1,33 +0,0 @@
-namespace Ca2d.Toolkit
-{
-    public class Ref<T> where T : struct
-    {
-        private T m_value;
-
-        public Ref(T mValue)
-        {
-            m_value = mValue;
-        }
-
-        public T Value
-        {
-            get => m_value;
-            set => m_value = value;
-        }
-
-        public override string ToString()
-        {
-            return m_value.ToString();
-        }
-
-        public static implicit operator T(Ref<T> wrapper)
-        {
-            return wrapper.Value;
-        }
-
-        public static implicit operator Ref<T>(T value)
-        {
-            return new Ref<T>(value);
-        }
-    }
-}

Assets/Main/Scripts/Rx.meta

@@ -1,3 +0,0 @@
-fileFormatVersion: 2
-guid: 069b06808ea54580b3e8b8862e6b9587
-timeCreated: 1712972593

Assets/Main/Scripts/UI.meta

@@ -1,3 +0,0 @@
-fileFormatVersion: 2
-guid: 16a7b38b52044b7983d66b421c2fab7c
-timeCreated: 1712972588

Assets/Main/Scripts/UnityObjectWarp.cs

@@ -1,16 +1,25 @@
 using System;
 using UnityEngine;
-using Object = UnityEngine.Object;
 
 namespace Ca2d.Toolkit
 {
+    /// <summary>
+    /// An utility which allows you to reference an <see cref="UnityEngine.Object"/> via it's interface.
+    /// </summary>
+    /// <typeparam name="T">The type of class which you are willing to reference as.</typeparam>
     [Serializable]
     public struct UnityObjectWarp<T> where T : class
     {
-        [SerializeField] private Object m_referencedObject;
+        [SerializeField] private UnityEngine.Object m_referencedObject;
 
+        /// <summary>
+        /// Is this warp reference to a valid target?
+        /// </summary>
         public bool Valid => m_referencedObject is T;
         
+        /// <summary>
+        /// Trying to get the actual object of this reference.
+        /// </summary>
         public T Object => m_referencedObject as T;
         
         public static implicit operator T(UnityObjectWarp<T> wrapper)