- bugfix {if $foo instanceof $bar} failed to compile if 2nd value is a variable https://github.com/smarty-php/smarty/issues/92

lexer/smarty_internal_templateparser.y

@@ -31,58 +31,68 @@ class Smarty_Internal_Templateparser
      * @var bool
      */
     public $successful = true;
+
     /**
      * return value
      *
      * @var mixed
      */
     public $retvalue = 0;
+
     /**
      * counter for prefix code
      *
      * @var int
      */
     public static $prefix_number = 0;
+
     /**
      * @var
      */
     public $yymajor;
+
     /**
      * last index of array variable
      *
      * @var mixed
      */
     public $last_index;
+
     /**
      * last variable name
      *
      * @var string
      */
     public $last_variable;
+
     /**
      * root parse tree buffer
      *
      * @var Smarty_Internal_ParseTree
      */
     public $root_buffer;
+
     /**
      * current parse tree object
      *
      * @var Smarty_Internal_ParseTree
      */
     public $current_buffer;
+
     /**
      * lexer object
      *
      * @var Smarty_Internal_Templatelexer
      */
     public $lex;
+
     /**
      * internal error flag
      *
      * @var bool
      */
     private $internalError = false;
+
     /**
      * {strip} status
      *
@@ -95,18 +105,21 @@ class Smarty_Internal_Templateparser
      * @var Smarty_Internal_TemplateCompilerBase
      */
     public $compiler = null;
+
     /**
      * smarty object
      *
      * @var Smarty
      */
     public $smarty = null;
+
     /**
      * template object
      *
      * @var Smarty_Internal_Template
      */
     public $template = null;
+
     /**
      * block nesting level
      *
@@ -121,6 +134,20 @@ class Smarty_Internal_Templateparser
      */
     public $security = null;
 
+    /**
+     * template prefix array
+     *
+     * @var \Smarty_Internal_ParseTree[]
+     */
+    public $template_prefix = array();
+
+    /**
+     * security object
+     *
+     * @var \Smarty_Internal_ParseTree[]
+     */
+    public $template_postfix = array();
+
     /**
      * constructor
      *
@@ -196,7 +223,8 @@ class Smarty_Internal_Templateparser
     // complete template
     //
 start(res)       ::= template. {
-    $this->compiler->processInheritance($this);
+    $this->root_buffer->prepend_array($this, $this->template_prefix);
+    $this->root_buffer->append_array($this, $this->template_postfix);
     res = $this->root_buffer->to_smarty_php($this);
 }
 
@@ -839,11 +867,7 @@ ns1(res)           ::= ID(i). {
 
 ns1(res)           ::= NAMESPACE(i). {
     res = i;
-}
+    }
-
-//ns1(res)           ::= variable(v). {
-//    res = v;
-//}