Initial import.

vendor/doctrine/common/lib/Doctrine/Common/Comparable.php

@@ -0,0 +1,49 @@
+<?php
+/*
+ * 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.
+ *
+ * This software consists of voluntary contributions made by many individuals
+ * and is licensed under the MIT license. For more information, see
+ * <http://www.doctrine-project.org>.
+ */
+
+
+namespace Doctrine\Common;
+
+/**
+ * Comparable interface that allows to compare two value objects to each other for similarity.
+ *
+ * @license     http://www.opensource.org/licenses/lgpl-license.php LGPL
+ * @link        www.doctrine-project.com
+ * @since       2.2
+ * @author      Benjamin Eberlei <kontakt@beberlei.de>
+ * @author      Guilherme Blanco <guilhermeblanco@hotmail.com>
+ */
+interface Comparable
+{
+    /**
+     * Compare the current object to the passed $other.
+     *
+     * Returns 0 if they are semantically equal, 1 if the other object
+     * is less than the current one, or -1 if its more than the current one.
+     *
+     * This method should not check for identity using ===, only for semantical equality for example
+     * when two different DateTime instances point to the exact same Date + TZ.
+     *
+     * @param mixed $other
+     *
+     * @return int
+     */
+    public function compareTo($other);
+}
+