DateTimeNode to support datetime objects.

src/Structr/Structr.php

@@ -47,6 +47,26 @@ public static function define($name = null) {
         return $node;
     }
 
+    /**
+     * Given a class name, define a Structr which exports all its
+     * public properties as a map.
+     */
+    public static function defineFromClass($className)
+    {
+        $reflect = new \ReflectionClass($className);
+        $structr = static::define($className)
+            ->pre(function($s) { return (array)$s; })
+            ->isMap();
+
+        foreach ($reflect->getProperties(\ReflectionProperty::IS_PUBLIC) as $prop)
+        {
+            $structr->key($prop->getName())->optional()->isAny()->end();
+        }
+
+        return $structr;
+    }
+
+
     public static function getDefinition($name) {
         if(!isset(self::$_definitions[$name]))
             throw new Exception("Structr definition '{$name}' does not exist");

src/Structr/Tree/Base/PrototypeNode.php

@@ -9,6 +9,7 @@
 use Structr\Tree\Scalar\BooleanNode;
 use Structr\Tree\Scalar\NullNode;
 use Structr\Tree\Scalar\StringNode;
+use Structr\Tree\Scalar\DateTimeNode;
 use Structr\Tree\Scalar\AnyNode;
 
 use Structr\Tree\Composite\ListNode;
@@ -74,6 +75,15 @@ public function isNull() {
         return $this->_prototype;
     }
 
+    /**
+     * @return \Structr\Tree\Scalar\DateTime
+     */
+    public function isDateTime() {
+        $this->_prototype = new DateTimeNode($this);
+
+        return $this->_prototype;
+    }
+
     /**
      * @return \Structr\Tree\Scalar\AnyNode
      */

src/Structr/Tree/Scalar/DateTimeNode.php

@@ -0,0 +1,29 @@
+<?php
+
+namespace Structr\Tree\Scalar;
+
+use Structr\Tree\Base\Node;
+
+use Structr\Exception;
+
+class DateTimeNode extends Node
+{
+
+    protected function _walk_value($value) {
+        $value = parent::_walk_value($value);
+
+        if (!($value instanceof \DateTime))
+        {
+            try
+            {
+                $value = new \DateTime($value);
+            }
+            catch (\Exception $e)
+            {
+                throw new Exception("Failed to parse DateTime from '$value'");
+            }
+        }
+        return $value;
+    }
+
+}

tests/Structr/Test/ScalarTest.php

@@ -100,4 +100,22 @@ public function testStringRegexpFail() {
 
         Structr::ize($string)->isString()->regexp("/^\d{4}\w{2}$/")->run();
     }
+
+    public function testDateTime() {
+        $variable = new \DateTime;
+
+        $this->assertSame(Structr::ize($variable)
+                                  ->isDateTime()
+                                  ->run(), $variable);
+    }
+
+    public function testDateTimeFail() {
+        $this->setExpectedException('\\Structr\\Exception');
+
+        $notADateTime = 'fsdafsd';
+
+        Structr::ize($notADateTime)->isDateTime()->run();
+    }
+
+
 }