From 272454b85c70194a005067051257fe13e2dab68a Mon Sep 17 00:00:00 2001
From: bleis-tift <hey_c_est_la_vie@hotmail.co.jp>
Date: Tue, 8 Oct 2013 17:53:58 +0900
Subject: [PATCH] =?UTF-8?q?object=E3=81=AE=E3=83=A1=E3=82=BD=E3=83=83?=
 =?UTF-8?q?=E3=83=89=E3=82=92=E3=82=AA=E3=83=BC=E3=83=90=E3=83=BC=E3=83=A9?=
 =?UTF-8?q?=E3=82=A4=E3=83=89=20refs=20#2?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 SeqExt.Tests/Mutable/VarArrayTest.cs | 25 +++++++++++
 SeqExt/Mutable/VarArray.cs           | 62 +++++++++++++++++++++++++++-
 2 files changed, 86 insertions(+), 1 deletion(-)

diff --git a/SeqExt.Tests/Mutable/VarArrayTest.cs b/SeqExt.Tests/Mutable/VarArrayTest.cs
index 2144c5b..bc5d968 100644
--- a/SeqExt.Tests/Mutable/VarArrayTest.cs
+++ b/SeqExt.Tests/Mutable/VarArrayTest.cs
@@ -217,5 +217,30 @@ public void 要素を反転できる(int[] xs, int[] expected)
             array.ReverseThis();
             Assert.That(array.ToArray(), Is.EqualTo(expected));
         }
+
+        [TestCase(new string[0], "VarArray.Empty()")]
+        [TestCase(new[] { "" }, "VarArray()")]
+        [TestCase(new[] { "1", "", "2" }, "VarArray(1, , 2)")]
+        public void 文字列化できる(string[] xs, string expected)
+        {
+            var array = VarArray.Create(xs);
+            Assert.That(array.ToString(), Is.EqualTo(expected));
+        }
+
+        [TestCase(new int[0], new int[0], true)]
+        [TestCase(new int[0], new[] { 1 }, false)]
+        [TestCase(new[] { 1 }, new int[0], false)]
+        [TestCase(new[] { 1 }, new[] { 1 }, true)]
+        [TestCase(new[] { 1 }, new[] { 2 }, false)]
+        [TestCase(new[] { 1 }, new[] { 1, 0 }, false)]
+        [TestCase(new[] { 1, 2, 3 }, new[] { 1, 2, 3 }, true)]
+        [TestCase(new[] { 1, 2, 3 }, new[] { 1, 2 }, false)]
+        [TestCase(new[] { 1, 2, 3 }, new[] { 1, 2, 3, 0 }, false)]
+        public void VarArrayどうしの比較ができる(int[] xs, int[] ys, bool expected)
+        {
+            var array1 = VarArray.Create(xs);
+            var array2 = VarArray.Create(ys);
+            Assert.That(array1.Equals(array2), Is.EqualTo(expected));
+        }
     }
 }
diff --git a/SeqExt/Mutable/VarArray.cs b/SeqExt/Mutable/VarArray.cs
index 6384f42..bdbfa86 100644
--- a/SeqExt/Mutable/VarArray.cs
+++ b/SeqExt/Mutable/VarArray.cs
@@ -98,7 +98,7 @@ public static VarArray<T> ToVarArray<T>(this Seq<T> self)
     /// <summary>
     /// 可変長配列です。
     /// </summary>
-    public sealed class VarArray<T> : SeqBase<T>, RandomAccessSeq<T>
+    public sealed class VarArray<T> : SeqBase<T>, RandomAccessSeq<T>, IEquatable<VarArray<T>>
     {
         readonly System.Collections.Generic.List<T> value;
 
@@ -228,5 +228,65 @@ public void ReverseThis()
         {
             this.value.Reverse();
         }
+
+        /// <summary>
+        /// 現在のオブジェクトが、同じ型の別のオブジェクトと等しいかどうかを判定します。
+        /// </summary>
+        /// <param name="other">このオブジェクトと比較する可変長配列</param>
+        /// <returns>現在のオブジェクトがotherで指定されたオブジェクトと等しい場合はtrue、それ以外の場合はfalse</returns>
+        public bool Equals(VarArray<T> other)
+        {
+            if (this.Size != other.Size)
+                return false;
+
+            for (int i = 0; i < this.Size; i++)
+            {
+                if (object.Equals(this[i], other[i]) == false)
+                    return false;
+            }
+            return true;
+        }
+
+        /// <summary>使用しません。</summary>
+        [EditorBrowsable(EditorBrowsableState.Never)]
+        public override bool Equals(object obj)
+        {
+            var other = obj as VarArray<T>;
+            if (other == null)
+                return false;
+            return this.Equals(other);
+        }
+
+        /// <summary>使用しません。</summary>
+        [EditorBrowsable(EditorBrowsableState.Never)]
+        public override int GetHashCode()
+        {
+            var hash = 31;
+            foreach (var x in this)
+                hash ^= x == null ? 0 : x.GetHashCode();
+            return hash;
+        }
+
+        /// <summary>
+        /// このオブジェクトの文字列表現を取得します。
+        /// </summary>
+        public override string ToString()
+        {
+            if (this.Size == 0)
+                return "VarArray.Empty()";
+            var buf = new System.Text.StringBuilder("VarArray(");
+            foreach (var x in this)
+                buf.Append(x.ToStr()).Append(", ");
+            buf.Remove(buf.Length - 2, 2);
+            return buf.Append(")").ToString();
+        }
+
+        /// <summary>使用しません。</summary>
+        [EditorBrowsable(EditorBrowsableState.Never)]
+        public static new bool Equals(object a, object b) { return object.Equals(a, b); }
+
+        /// <summary>使用しません。</summary>
+        [EditorBrowsable(EditorBrowsableState.Never)]
+        public static new bool ReferenceEquals(object a, object b) { return object.ReferenceEquals(a, b); }
     }
 }