Add support for mustache like each/with and if

src/Handlebars/Context.php

@@ -99,10 +99,12 @@ class Handlebars_Context
      * variable , ../variable , variable.variable , .
      * 
      * @param string  $variableName variavle name to get from current context
+     * @param boolean $strict       strict search? if not found then throw exception
      *
      * @return mixed
+     * @throw InvalidArgumentException in strict mode and variable not found
      */
-    public function get($variableName)
+    public function get($variableName, $strict = false)
     {
         //Need to clean up
         $variableName = trim($variableName);
@@ -112,6 +114,9 @@ class Handlebars_Context
             $level++;
         }
         if (count($this->stack) < $level) {
+            if ($strict) {
+                throw new InvalidArgumentException('can not find variable in context');
+            }                
             return '';
         }
         end($this->stack);
@@ -121,6 +126,9 @@ class Handlebars_Context
         }
         $current = current($this->stack);
         if (!$variableName) {
+            if ($strict) {
+                throw new InvalidArgumentException('can not find variable in context');
+            }                
             return '';
         } elseif ($variableName == '.') {
             return $current;
@@ -141,10 +149,12 @@ class Handlebars_Context
      *
      * @param mixed   $variable variable to check
      * @param string  $inside   property/method to check
+     * @param boolean $strict   strict search? if not found then throw exception
      *
      * @return boolean true if exist
+     * @throw InvalidArgumentException in strict mode and variable not found
      */ 
-    private function _findVariableInContext($variable, $inside)
+    private function _findVariableInContext($variable, $inside, $strict = false)
     {
         $value = '';
         if (is_array($variable)) {
@@ -159,6 +169,8 @@ class Handlebars_Context
             }                
         } elseif ($inside === '.') {
             $value = $variable;
+        } elseif ($strict) {
+            throw new InvalidArgumentException('can not find variable in context');
         }
         return $value;
     }

src/Handlebars/Template.php

@@ -168,6 +168,29 @@ class Handlebars_Template
                 $source
                 );
             return call_user_func_array($helpers->$sectionName, $params);
+        } elseif (trim($current[Handlebars_Tokenizer::ARGS]) == '') { 
+            //Fallback for mustache style each/with/for just if there is no argument at all.
+            try {
+                $sectionVar = $context->get($sectionName, true);
+            } catch (InvalidArgumentException $e) {
+                throw new RuntimeException($sectionName . ' is not registered as a helper');            
+            }
+            $buffer = '';
+            if (is_array($sectionVar) || $sectionVar instanceof Traversable) {
+                foreach ($sectionVar as $d) {
+                    $context->push($d);
+                    $buffer .= $this->render($context);
+                    $context->pop();
+                }
+            } elseif (is_object($sectionVar)) {
+                //Act like with 
+                $context->push($sectionVar);
+                $buffer = $this->render($context);
+                $context->pop();
+            } elseif ($sectionVar) {
+                $buffer = $this->render($context);
+            }
+            return $buffer;
         } else {
             throw new RuntimeException($sectionName . ' is not registered as a helper');
         }