Check in php implementation. (#2052)

This pull request includes two implementation: C extension and PHP
package. Both implementations support encode/decode of singular,
repeated and map fields.

1 files changed, 161 insertions, 0 deletions

diff --git a/php/src/Google/Protobuf/Internal/GPBUtil.php b/php/src/Google/Protobuf/Internal/GPBUtil.php
new file mode 100644
index 00000000..417a9729
--- /dev/null
+++ b/php/src/Google/Protobuf/Internal/GPBUtil.php
@@ -0,0 +1,161 @@
+<?php
+
+// Protocol Buffers - Google's data interchange format
+// Copyright 2008 Google Inc.  All rights reserved.
+// https://developers.google.com/protocol-buffers/
+//
+// 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\Protobuf\Internal;
+
+use Google\Protobuf\Internal\GPBType;
+use Google\Protobuf\Internal\RepeatedField;
+
+class GPBUtil
+{
+
+    public static function checkString(&$var, $check_utf8)
+    {
+        if (is_array($var) || is_object($var)) {
+            trigger_error("Expect string.", E_USER_ERROR);
+            return;
+        }
+        if (!is_string($var)) {
+            $var = strval($var);
+        }
+        if ($check_utf8 && !preg_match('//u', $var)) {
+            trigger_error("Expect utf-8 encoding.", E_USER_ERROR);
+            return;
+        }
+    }
+
+    public static function checkEnum(&$var)
+    {
+      static::checkInt32($var);
+    }
+
+    public static function checkInt32(&$var)
+    {
+        if (is_numeric($var)) {
+            $var = intval($var);
+        } else {
+            trigger_error("Expect integer.", E_USER_ERROR);
+        }
+    }
+
+    public static function checkUint32(&$var)
+    {
+        if (is_numeric($var)) {
+            $var = intval($var);
+            if (PHP_INT_SIZE === 8) {
+                $var |= ((-(($var >> 31) & 0x1)) & ~0xFFFFFFFF);
+            }
+        } else {
+            trigger_error("Expect integer.", E_USER_ERROR);
+        }
+    }
+
+    public static function checkInt64(&$var)
+    {
+        if (is_numeric($var)) {
+            $var = intval($var);
+        } else {
+            trigger_error("Expect integer.", E_USER_ERROR);
+        }
+    }
+
+    public static function checkUint64(&$var)
+    {
+        if (is_numeric($var)) {
+            $var = intval($var);
+        } else {
+            trigger_error("Expect integer.", E_USER_ERROR);
+        }
+    }
+
+    public static function checkFloat(&$var)
+    {
+        if (is_float($var) || is_numeric($var)) {
+            $var = floatval($var);
+        } else {
+            trigger_error("Expect float.", E_USER_ERROR);
+        }
+    }
+
+    public static function checkDouble(&$var)
+    {
+        if (is_float($var) || is_numeric($var)) {
+            $var = floatval($var);
+        } else {
+            trigger_error("Expect float.", E_USER_ERROR);
+        }
+    }
+
+    public static function checkBool(&$var)
+    {
+        if (is_array($var) || is_object($var)) {
+            trigger_error("Expect boolean.", E_USER_ERROR);
+            return;
+        }
+        $var = boolval($var);
+    }
+
+    public static function checkMessage(&$var, $klass)
+    {
+        if (!$var instanceof $klass && !is_null($var)) {
+            trigger_error("Expect message.", E_USER_ERROR);
+        }
+    }
+
+    public static function checkRepeatedField(&$var, $type, $klass = null)
+    {
+        if (!$var instanceof RepeatedField) {
+            trigger_error("Expect repeated field.", E_USER_ERROR);
+        }
+        if ($var->getType() != $type) {
+            trigger_error(
+                "Expect repeated field of different type.",
+                E_USER_ERROR);
+        }
+        if ($var->getType() === GPBType::MESSAGE &&
+            $var->getClass() !== $klass) {
+            trigger_error(
+                "Expect repeated field of different message.",
+                E_USER_ERROR);
+        }
+    }
+
+    public static function Int64($value)
+    {
+        return new Int64($value);
+    }
+
+    public static function Uint64($value)
+    {
+        return new Uint64($value);
+    }
+}