From f8244eaa4bc6083654c3be0c7536617629f8359f Mon Sep 17 00:00:00 2001
From: senssic <qisensen@encdata.cn>
Date: Wed, 26 May 2021 13:56:32 +0800
Subject: [PATCH] =?UTF-8?q?=E4=BD=8D=E8=BF=90=E7=AE=97=E6=A0=87=E8=AF=86?=
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---
 .../cn/hutool/core/math/BitStatusUtils.java   | 77 +++++++++++++++++++
 1 file changed, 77 insertions(+)
 create mode 100644 hutool-core/src/main/java/cn/hutool/core/math/BitStatusUtils.java

diff --git a/hutool-core/src/main/java/cn/hutool/core/math/BitStatusUtils.java b/hutool-core/src/main/java/cn/hutool/core/math/BitStatusUtils.java
new file mode 100644
index 000000000..ca4764c4e
--- /dev/null
+++ b/hutool-core/src/main/java/cn/hutool/core/math/BitStatusUtils.java
@@ -0,0 +1,77 @@
+package cn.hutool.core.math;
+
+/**
+ * 通过位运算表示状态的工具类<br>
+ * 参数必须是 `偶数` 且 `大于等于0`！
+ *
+ * @author senssic
+ * @date 2021-5-26 15:23
+ */
+public class BitStatusUtils {
+
+  /**
+   * 增加状态
+   *
+   * @param states 原状态
+   * @param stat 要添加的状态
+   * @return 新的状态值
+   */
+  public static int add(int states, int stat) {
+
+    check(states, stat);
+
+    return states | stat;
+  }
+
+  /**
+   * 判断是否含有状态
+   *
+   * @param states 原状态
+   * @param stat 要判断的状态
+   * @return true：有
+   */
+  public static boolean has(int states, int stat) {
+
+    check(states, stat);
+
+    return (states & stat) == stat;
+  }
+
+  /**
+   * 删除一个状态
+   *
+   * @param states 原状态
+   * @param stat 要删除的状态
+   * @return 新的状态值
+   */
+  public static int remove(int states, int stat) {
+    check(states, stat);
+    if (has(states, stat)) {
+      return states ^ stat;
+    }
+    return states;
+  }
+
+	/**
+	 * 清空状态就是0
+	 * @return
+	 */
+  public static int clear() {
+    return 0;
+  }
+
+	/**
+	 * 检查
+	 * @param args
+	 */
+  private static void check(int... args) {
+    for (int arg : args) {
+      if (arg < 0) {
+        throw new IllegalArgumentException(arg + " 必须大于等于0");
+      }
+      if ((arg & 1) == 1) {
+        throw new IllegalArgumentException(arg + " 不是偶数");
+      }
+    }
+  }
+}