allow vendord

vendor/google/gax/src/ValidationTrait.php

@@ -0,0 +1,81 @@
+<?php
+/*
+ * Copyright 2017 Google LLC
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+namespace Google\ApiCore;
+
+/**
+ * @internal
+ */
+trait ValidationTrait
+{
+    /**
+     * @param array $arr Associative array
+     * @param array $requiredKeys List of keys to check for in $arr
+     * @return array Returns $arr for fluent use
+     */
+    public static function validate(array $arr, array $requiredKeys)
+    {
+        return self::validateImpl($arr, $requiredKeys, true);
+    }
+
+    /**
+     * @param array $arr Associative array
+     * @param array $requiredKeys List of keys to check for in $arr
+     * @return array Returns $arr for fluent use
+     */
+    public static function validateNotNull(array $arr, array $requiredKeys)
+    {
+        return self::validateImpl($arr, $requiredKeys, false);
+    }
+
+    private static function validateImpl($arr, $requiredKeys, $allowNull)
+    {
+        foreach ($requiredKeys as $requiredKey) {
+            $valid = array_key_exists($requiredKey, $arr)
+                && ($allowNull || !is_null($arr[$requiredKey]));
+            if (!$valid) {
+                throw new ValidationException("Missing required argument $requiredKey");
+            }
+        }
+        return $arr;
+    }
+
+    /**
+     * @param string $filePath
+     * @throws ValidationException
+     */
+    private static function validateFileExists(string $filePath)
+    {
+        if (!file_exists($filePath)) {
+            throw new ValidationException("Could not find specified file: $filePath");
+        }
+    }
+}