1 files changed, 55 insertions, 0 deletions
diff --git a/vendor/gipfl/json/src/SerializationHelper.php b/vendor/gipfl/json/src/SerializationHelper.php
new file mode 100644
index 0000000..0714e30
--- /dev/null
+++ b/vendor/gipfl/json/src/SerializationHelper.php
@@ -0,0 +1,55 @@
+<?php
+
+namespace gipfl\Json;
+
+use InvalidArgumentException;
+use JsonSerializable;
+use stdClass;
+
+class SerializationHelper
+{
+    /**
+     * TODO: Check whether json_encode() is faster
+     *
+     * @param mixed $value
+     * @return bool
+     */
+    public static function assertSerializableValue($value)
+    {
+        if ($value === null || is_scalar($value)) {
+            return true;
+        }
+        if (is_object($value)) {
+            if ($value instanceof JsonSerializable) {
+                return true;
+            }
+
+            if ($value instanceof stdClass) {
+                foreach ((array) $value as $val) {
+                    static::assertSerializableValue($val);
+                }
+
+                return true;
+            }
+        }
+
+        if (is_array($value)) {
+            foreach ($value as $val) {
+                static::assertSerializableValue($val);
+            }
+
+            return true;
+        }
+
+        throw new InvalidArgumentException('Serializable value expected, got ' . static::getPhpType($value));
+    }
+
+    public static function getPhpType($var)
+    {
+        if (is_object($var)) {
+            return get_class($var);
+        }
+
+        return gettype($var);
+    }
+}