add namespace reflection methods

added in 5.3

I couldn't actually get the ##sysdoc.php## to work (it just deleted all the docblocks), so I just copied the format.

hphp/system/classes/reflection.php

@@ -1492,6 +1492,51 @@ class ReflectionClass implements Reflector {
   public function getAttributesRecursive() {
     return $this->fetch('attributes_rec');
   }
+
+// Do NOT modifiy this doc comment block generated by idl/sysdoc.php
+/**
+ * ( excerpt from http://www.php.net/manual/en/reflectionclass.innamespace.php )
+ *
+ * Checks if in namespace
+ *
+ * @return     bool   Returns TRUE on success or FALSE on failure.
+ */
+  public function inNamespace() {
+    return strrpos($this->getName(), '\\') !== false;
+  }
+
+// Do NOT modifiy this doc comment block generated by idl/sysdoc.php
+/**
+ * ( excerpt from http://php.net/manual/en/reflectionclass.getnamespacename.php )
+ *
+ * Gets namespace name
+ *
+ * @return     string   The namespace name.
+ */
+  public function getNamespaceName() {
+    $pos = strrpos($this->getName(), '\\');
+    if ($pos === false) {
+      return '';
+    }
+    return substr($this->getName(), 0, $pos);
+  }
+
+// Do NOT modifiy this doc comment block generated by idl/sysdoc.php
+/**
+ * ( excerpt from http://www.php.net/manual/en/reflectionclass.getshortname.php )
+ *
+ * Gets short name
+ *
+ * @return     string   The class short name.
+ */
+  public function getShortName() {
+    $pos = strrpos($this->getName(), '\\');
+    if ($pos === false) {
+      return $this->getName();
+    }
+    return substr($this->getName(), $pos + 1);
+  }
+
 }
 
 ///////////////////////////////////////////////////////////////////////////////

hphp/test/quick/ns_reflection.php

@@ -0,0 +1,19 @@
+<?php
+namespace A\B;
+
+class Foo { }
+
+$function = new \ReflectionClass('stdClass');
+
+var_dump($function->inNamespace());
+var_dump($function->getName());
+var_dump($function->getNamespaceName());
+var_dump($function->getShortName());
+
+$function = new \ReflectionClass('A\\B\\Foo');
+
+var_dump($function->inNamespace());
+var_dump($function->getName());
+var_dump($function->getNamespaceName());
+var_dump($function->getShortName());
+?>

hphp/test/quick/ns_reflection.php.expect

@@ -0,0 +1,8 @@
+bool(false)
+string(8) "stdClass"
+string(0) ""
+string(8) "stdClass"
+bool(true)
+string(7) "A\B\Foo"
+string(3) "A\B"
+string(3) "Foo"