Merge pull request #17 from diosney/master

Helpers: Added PHP 5.2 support.

.travis.yml

@@ -1,4 +1,5 @@
 language: php
 php:
+  - 5.2
   - 5.3
   - 5.4

src/Handlebars/Helpers.php

@@ -59,16 +59,19 @@ class Handlebars_Helpers
             }
         }            
     }
+
 	/**
-     * Add default helpers (if unless each with)
+	 * Create handler for the 'if' helper.
+	 * Needed for compatibility with PHP 5.2 since it doesn't support anonymous functions.
 	 *
-     * @return void
+	 * @param $template
+	 * @param $context
+	 * @param $args
+	 * @param $source
+	 *
+	 * @return mixed
 	 */
-    protected function addDefaultHelpers()
+	public static function _helper_if($template, $context, $args, $source) {
-    {
-        $this->add(
-            'if', 
-            function ($template, $context, $args, $source) {
 		$tmp = $context->get($args);
 		$buffer = '';
 
@@ -85,11 +88,19 @@ class Handlebars_Helpers
 		}
 		return $buffer;
 	}
-        );
 
-        $this->add(
+	/**
-            'each', 
+	 * Create handler for the 'each' helper.
-            function ($template, $context, $args, $source) {
+	 * Needed for compatibility with PHP 5.2 since it doesn't support anonymous functions.
+	 *
+	 * @param $template
+	 * @param $context
+	 * @param $args
+	 * @param $source
+	 *
+	 * @return mixed
+	 */
+	public static function _helper_each($template, $context, $args, $source) {
 		$tmp = $context->get($args);
 		$buffer = '';
 		if (is_array($tmp) || $tmp instanceof Traversable) {
@@ -101,11 +112,19 @@ class Handlebars_Helpers
 		}
 		return $buffer;
 	}
-        ); 
 
-        $this->add(
+	/**
-            'unless', 
+	 * Create handler for the 'unless' helper.
-            function ($template, $context, $args, $source) {
+	 * Needed for compatibility with PHP 5.2 since it doesn't support anonymous functions.
+	 *
+	 * @param $template
+	 * @param $context
+	 * @param $args
+	 * @param $source
+	 *
+	 * @return mixed
+	 */
+	public static function _helper_unless($template, $context, $args, $source) {
 		$tmp = $context->get($args);
 		$buffer = '';
 		if (!$tmp) {
@@ -113,25 +132,72 @@ class Handlebars_Helpers
 		}
 		return $buffer;
 	}
-        ); 
 
-        $this->add(
+	/**
-            'with', 
+	 * Create handler for the 'with' helper.
-            function ($template, $context, $args, $source) {
+	 * Needed for compatibility with PHP 5.2 since it doesn't support anonymous functions.
+	 *
+	 * @param $template
+	 * @param $context
+	 * @param $args
+	 * @param $source
+	 *
+	 * @return mixed
+	 */
+	public static function _helper_with($template, $context, $args, $source) {
 		$tmp = $context->get($args);
 		$context->push($tmp);
 		$buffer = $template->render($context);
 		$context->pop();
 		return $buffer;
 	}
+
+	/**
+	 * Create handler for the 'bindAttr' helper.
+	 * Needed for compatibility with PHP 5.2 since it doesn't support anonymous functions.
+	 *
+	 * @param $template
+	 * @param $context
+	 * @param $args
+	 * @param $source
+	 *
+	 * @return mixed
+	 */
+	public static function _helper_bindAttr($template, $context, $args, $source) {
+		return $args;
+	}
+
+    /**
+     * Add default helpers (if unless each with bindAttr)
+     * 
+     * @return void
+     */
+    protected function addDefaultHelpers()
+    {
+        $this->add(
+            'if',
+	        array('Handlebars_Helpers', '_helper_if')
+        );
+
+        $this->add(
+            'each',
+	        array('Handlebars_Helpers', '_helper_each')
+        );
+
+        $this->add(
+            'unless',
+	        array('Handlebars_Helpers', '_helper_unless')
+        );
+
+        $this->add(
+            'with',
+	        array('Handlebars_Helpers', '_helper_with')
         );
 
         //Just for compatibility with ember
         $this->add(
             'bindAttr',
-            function ($template, $context, $args, $source) {
+	        array('Handlebars_Helpers', '_helper_bindAttr')
-                return $args;
-            }
         );
     }