Remove decorator pattern from validator; we'll only have one decorator which invokes the subsystem.

git-svn-id: http://htmlpurifier.org/svnroot/htmlpurifier/trunk@1586 48356398-32a2-884e-a903-53898d9a118a

library/HTMLPurifier/ConfigSchema/Validator.php

@@ -0,0 +1,39 @@
+<?php
+
+/**
+ * Base validator for HTMLPurifier_ConfigSchema_Interchange
+ */
+class HTMLPurifier_ConfigSchema_Validator
+{
+    
+    /**
+     * Validates and filters a namespace.
+     */
+    public function validateNamespace(&$arr, $interchange) {
+        $this->validate($arr, $interchange, 'namespace');
+    }
+    
+    /**
+     * Validates and filters a directive.
+     */
+    public function validateDirective(&$arr, $interchange) {
+        $this->validate($arr, $interchange, 'directive');
+    }
+    
+    /**
+     * Common validator, throwing an exception on error. It can
+     * also performing filtering or evaluation functions.
+     *
+     * @note This is strictly for convenience reasons when subclasing.
+     * 
+     * @param $arr Array to validate.
+     * @param $interchange HTMLPurifier_ConfigSchema_Interchange object
+     *      that is being processed.
+     * @param $type Type of object being validated, this saves a little work
+     *      if only cosmetic changes are being made between namespaces
+     *      and directives.
+     */
+    protected function validate(&$arr, $interchange, $type) {}
+    
+    
+}