Merge branch 'master' of github.com:vichan-devel/Tinyboard

Conflicts:
	js/post-hider.js

1 files changed, 751 insertions, 242 deletions

diff --git a/inc/lib/Twig/Extension/Core.php b/inc/lib/Twig/Extension/Core.php
index a4153245..e68687b4 100644
--- a/inc/lib/Twig/Extension/Core.php
+++ b/inc/lib/Twig/Extension/Core.php
@@ -14,6 +14,83 @@ if (!defined('ENT_SUBSTITUTE')) {
  */
 class Twig_Extension_Core extends Twig_Extension
 {
+    protected $dateFormats = array('F j, Y H:i', '%d days');
+    protected $numberFormat = array(0, '.', ',');
+    protected $timezone = null;
+
+    /**
+     * Sets the default format to be used by the date filter.
+     *
+     * @param string $format             The default date format string
+     * @param string $dateIntervalFormat The default date interval format string
+     */
+    public function setDateFormat($format = null, $dateIntervalFormat = null)
+    {
+        if (null !== $format) {
+            $this->dateFormats[0] = $format;
+        }
+
+        if (null !== $dateIntervalFormat) {
+            $this->dateFormats[1] = $dateIntervalFormat;
+        }
+    }
+
+    /**
+     * Gets the default format to be used by the date filter.
+     *
+     * @return array The default date format string and the default date interval format string
+     */
+    public function getDateFormat()
+    {
+        return $this->dateFormats;
+    }
+
+    /**
+     * Sets the default timezone to be used by the date filter.
+     *
+     * @param DateTimeZone|string $timezone The default timezone string or a DateTimeZone object
+     */
+    public function setTimezone($timezone)
+    {
+        $this->timezone = $timezone instanceof DateTimeZone ? $timezone : new DateTimeZone($timezone);
+    }
+
+    /**
+     * Gets the default timezone to be used by the date filter.
+     *
+     * @return DateTimeZone The default timezone currently in use
+     */
+    public function getTimezone()
+    {
+        if (null === $this->timezone) {
+            $this->timezone = new DateTimeZone(date_default_timezone_get());
+        }
+
+        return $this->timezone;
+    }
+
+    /**
+     * Sets the default format to be used by the number_format filter.
+     *
+     * @param integer $decimal      The number of decimal places to use.
+     * @param string  $decimalPoint The character(s) to use for the decimal point.
+     * @param string  $thousandSep  The character(s) to use for the thousands separator.
+     */
+    public function setNumberFormat($decimal, $decimalPoint, $thousandSep)
+    {
+        $this->numberFormat = array($decimal, $decimalPoint, $thousandSep);
+    }
+
+    /**
+     * Get the default format used by the number_format filter.
+     *
+     * @return array The arguments for number_format()
+     */
+    public function getNumberFormat()
+    {
+        return $this->numberFormat;
+    }
+
     /**
      * Returns the token parser instance to add to the existing list.
      *
@@ -34,6 +111,9 @@ class Twig_Extension_Core extends Twig_Extension
             new Twig_TokenParser_From(),
             new Twig_TokenParser_Set(),
             new Twig_TokenParser_Spaceless(),
+            new Twig_TokenParser_Flush(),
+            new Twig_TokenParser_Do(),
+            new Twig_TokenParser_Embed(),
         );
     }
 
@@ -46,40 +126,53 @@ class Twig_Extension_Core extends Twig_Extension
     {
         $filters = array(
             // formatting filters
-            'date'    => new Twig_Filter_Function('twig_date_format_filter'),
-            'format'  => new Twig_Filter_Function('sprintf'),
-            'replace' => new Twig_Filter_Function('twig_strtr'),
+            new Twig_SimpleFilter('date', 'twig_date_format_filter', array('needs_environment' => true)),
+            new Twig_SimpleFilter('date_modify', 'twig_date_modify_filter', array('needs_environment' => true)),
+            new Twig_SimpleFilter('format', 'sprintf'),
+            new Twig_SimpleFilter('replace', 'strtr'),
+            new Twig_SimpleFilter('number_format', 'twig_number_format_filter', array('needs_environment' => true)),
+            new Twig_SimpleFilter('abs', 'abs'),
 
             // encoding
-            'url_encode'  => new Twig_Filter_Function('twig_urlencode_filter'),
-            'json_encode' => new Twig_Filter_Function('twig_jsonencode_filter'),
+            new Twig_SimpleFilter('url_encode', 'twig_urlencode_filter'),
+            new Twig_SimpleFilter('json_encode', 'twig_jsonencode_filter'),
+            new Twig_SimpleFilter('convert_encoding', 'twig_convert_encoding'),
 
             // string filters
-            'title'      => new Twig_Filter_Function('twig_title_string_filter', array('needs_environment' => true)),
-            'capitalize' => new Twig_Filter_Function('twig_capitalize_string_filter', array('needs_environment' => true)),
-            'upper'      => new Twig_Filter_Function('strtoupper'),
-            'lower'      => new Twig_Filter_Function('strtolower'),
-            'striptags'  => new Twig_Filter_Function('strip_tags'),
+            new Twig_SimpleFilter('title', 'twig_title_string_filter', array('needs_environment' => true)),
+            new Twig_SimpleFilter('capitalize', 'twig_capitalize_string_filter', array('needs_environment' => true)),
+            new Twig_SimpleFilter('upper', 'strtoupper'),
+            new Twig_SimpleFilter('lower', 'strtolower'),
+            new Twig_SimpleFilter('striptags', 'strip_tags'),
+            new Twig_SimpleFilter('trim', 'trim'),
+            new Twig_SimpleFilter('nl2br', 'nl2br', array('pre_escape' => 'html', 'is_safe' => array('html'))),
 
             // array helpers
-            'join'    => new Twig_Filter_Function('twig_join_filter'),
-            'reverse' => new Twig_Filter_Function('twig_reverse_filter'),
-            'length'  => new Twig_Filter_Function('twig_length_filter', array('needs_environment' => true)),
-            'sort'    => new Twig_Filter_Function('twig_sort_filter'),
-            'merge'   => new Twig_Filter_Function('twig_array_merge'),
+            new Twig_SimpleFilter('join', 'twig_join_filter'),
+            new Twig_SimpleFilter('split', 'twig_split_filter'),
+            new Twig_SimpleFilter('sort', 'twig_sort_filter'),
+            new Twig_SimpleFilter('merge', 'twig_array_merge'),
+            new Twig_SimpleFilter('batch', 'twig_array_batch'),
+
+            // string/array filters
+            new Twig_SimpleFilter('reverse', 'twig_reverse_filter', array('needs_environment' => true)),
+            new Twig_SimpleFilter('length', 'twig_length_filter', array('needs_environment' => true)),
+            new Twig_SimpleFilter('slice', 'twig_slice', array('needs_environment' => true)),
+            new Twig_SimpleFilter('first', 'twig_first', array('needs_environment' => true)),
+            new Twig_SimpleFilter('last', 'twig_last', array('needs_environment' => true)),
 
             // iteration and runtime
-            'default' => new Twig_Filter_Function('twig_default_filter'),
-            'keys'    => new Twig_Filter_Function('twig_get_array_keys_filter'),
+            new Twig_SimpleFilter('default', '_twig_default_filter', array('node_class' => 'Twig_Node_Expression_Filter_Default')),
+            new Twig_SimpleFilter('keys', 'twig_get_array_keys_filter'),
 
             // escaping
-            'escape' => new Twig_Filter_Function('twig_escape_filter', array('needs_environment' => true, 'is_safe_callback' => 'twig_escape_filter_is_safe')),
-            'e'      => new Twig_Filter_Function('twig_escape_filter', array('needs_environment' => true, 'is_safe_callback' => 'twig_escape_filter_is_safe')),
+            new Twig_SimpleFilter('escape', 'twig_escape_filter', array('needs_environment' => true, 'is_safe_callback' => 'twig_escape_filter_is_safe')),
+            new Twig_SimpleFilter('e', 'twig_escape_filter', array('needs_environment' => true, 'is_safe_callback' => 'twig_escape_filter_is_safe')),
         );
 
         if (function_exists('mb_get_info')) {
-            $filters['upper'] = new Twig_Filter_Function('twig_upper_filter', array('needs_environment' => true));
-            $filters['lower'] = new Twig_Filter_Function('twig_lower_filter', array('needs_environment' => true));
+            $filters[] = new Twig_SimpleFilter('upper', 'twig_upper_filter', array('needs_environment' => true));
+            $filters[] = new Twig_SimpleFilter('lower', 'twig_lower_filter', array('needs_environment' => true));
         }
 
         return $filters;
@@ -93,29 +186,33 @@ class Twig_Extension_Core extends Twig_Extension
     public function getFunctions()
     {
         return array(
-            'range'    => new Twig_Function_Function('range'),
-            'constant' => new Twig_Function_Function('constant'),
-            'cycle'    => new Twig_Function_Function('twig_cycle'),
+            new Twig_SimpleFunction('range', 'range'),
+            new Twig_SimpleFunction('constant', 'twig_constant'),
+            new Twig_SimpleFunction('cycle', 'twig_cycle'),
+            new Twig_SimpleFunction('random', 'twig_random', array('needs_environment' => true)),
+            new Twig_SimpleFunction('date', 'twig_date_converter', array('needs_environment' => true)),
+            new Twig_SimpleFunction('include', 'twig_include', array('needs_environment' => true, 'needs_context' => true, 'is_safe' => array('all'))),
         );
     }
 
     /**
-     * Returns a list of filters to add to the existing list.
+     * Returns a list of tests to add to the existing list.
      *
-     * @return array An array of filters
+     * @return array An array of tests
      */
     public function getTests()
     {
         return array(
-            'even'        => new Twig_Test_Function('twig_test_even'),
-            'odd'         => new Twig_Test_Function('twig_test_odd'),
-            'defined'     => new Twig_Test_Function('twig_test_defined'),
-            'sameas'      => new Twig_Test_Function('twig_test_sameas'),
-            'none'        => new Twig_Test_Function('twig_test_none'),
-            'null'        => new Twig_Test_Function('twig_test_none'),
-            'divisibleby' => new Twig_Test_Function('twig_test_divisibleby'),
-            'constant'    => new Twig_Test_Function('twig_test_constant'),
-            'empty'       => new Twig_Test_Function('twig_test_empty'),
+            new Twig_SimpleTest('even', null, array('node_class' => 'Twig_Node_Expression_Test_Even')),
+            new Twig_SimpleTest('odd', null, array('node_class' => 'Twig_Node_Expression_Test_Odd')),
+            new Twig_SimpleTest('defined', null, array('node_class' => 'Twig_Node_Expression_Test_Defined')),
+            new Twig_SimpleTest('sameas', null, array('node_class' => 'Twig_Node_Expression_Test_Sameas')),
+            new Twig_SimpleTest('none', null, array('node_class' => 'Twig_Node_Expression_Test_Null')),
+            new Twig_SimpleTest('null', null, array('node_class' => 'Twig_Node_Expression_Test_Null')),
+            new Twig_SimpleTest('divisibleby', null, array('node_class' => 'Twig_Node_Expression_Test_Divisibleby')),
+            new Twig_SimpleTest('constant', null, array('node_class' => 'Twig_Node_Expression_Test_Constant')),
+            new Twig_SimpleTest('empty', 'twig_test_empty'),
+            new Twig_SimpleTest('iterable', 'twig_test_iterable'),
         );
     }
 
@@ -129,15 +226,15 @@ class Twig_Extension_Core extends Twig_Extension
         return array(
             array(
                 'not' => array('precedence' => 50, 'class' => 'Twig_Node_Expression_Unary_Not'),
-                '-'   => array('precedence' => 50, 'class' => 'Twig_Node_Expression_Unary_Neg'),
-                '+'   => array('precedence' => 50, 'class' => 'Twig_Node_Expression_Unary_Pos'),
+                '-'   => array('precedence' => 500, 'class' => 'Twig_Node_Expression_Unary_Neg'),
+                '+'   => array('precedence' => 500, 'class' => 'Twig_Node_Expression_Unary_Pos'),
             ),
             array(
-                'b-and'  => array('precedence' => 5, 'class' => 'Twig_Node_Expression_Binary_BitwiseAnd', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
-                'b-xor'  => array('precedence' => 5, 'class' => 'Twig_Node_Expression_Binary_BitwiseXor', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
-                'b-or'   => array('precedence' => 5, 'class' => 'Twig_Node_Expression_Binary_BitwiseOr', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
                 'or'     => array('precedence' => 10, 'class' => 'Twig_Node_Expression_Binary_Or', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
                 'and'    => array('precedence' => 15, 'class' => 'Twig_Node_Expression_Binary_And', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
+                'b-or'   => array('precedence' => 16, 'class' => 'Twig_Node_Expression_Binary_BitwiseOr', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
+                'b-xor'  => array('precedence' => 17, 'class' => 'Twig_Node_Expression_Binary_BitwiseXor', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
+                'b-and'  => array('precedence' => 18, 'class' => 'Twig_Node_Expression_Binary_BitwiseAnd', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
                 '=='     => array('precedence' => 20, 'class' => 'Twig_Node_Expression_Binary_Equal', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
                 '!='     => array('precedence' => 20, 'class' => 'Twig_Node_Expression_Binary_NotEqual', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
                 '<'      => array('precedence' => 20, 'class' => 'Twig_Node_Expression_Binary_Less', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
@@ -146,6 +243,7 @@ class Twig_Extension_Core extends Twig_Extension
                 '<='     => array('precedence' => 20, 'class' => 'Twig_Node_Expression_Binary_LessEqual', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
                 'not in' => array('precedence' => 20, 'class' => 'Twig_Node_Expression_Binary_NotIn', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
                 'in'     => array('precedence' => 20, 'class' => 'Twig_Node_Expression_Binary_In', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
+                '..'     => array('precedence' => 25, 'class' => 'Twig_Node_Expression_Binary_Range', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
                 '+'      => array('precedence' => 30, 'class' => 'Twig_Node_Expression_Binary_Add', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
                 '-'      => array('precedence' => 30, 'class' => 'Twig_Node_Expression_Binary_Sub', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
                 '~'      => array('precedence' => 40, 'class' => 'Twig_Node_Expression_Binary_Concat', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
@@ -155,7 +253,6 @@ class Twig_Extension_Core extends Twig_Extension
                 '%'      => array('precedence' => 60, 'class' => 'Twig_Node_Expression_Binary_Mod', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
                 'is'     => array('precedence' => 100, 'callable' => array($this, 'parseTestExpression'), 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
                 'is not' => array('precedence' => 100, 'callable' => array($this, 'parseNotTestExpression'), 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
-                '..'     => array('precedence' => 110, 'class' => 'Twig_Node_Expression_Binary_Range', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
                 '**'     => array('precedence' => 200, 'class' => 'Twig_Node_Expression_Binary_Power', 'associativity' => Twig_ExpressionParser::OPERATOR_RIGHT),
             ),
         );
@@ -169,13 +266,35 @@ class Twig_Extension_Core extends Twig_Extension
     public function parseTestExpression(Twig_Parser $parser, $node)
     {
         $stream = $parser->getStream();
-        $name = $stream->expect(Twig_Token::NAME_TYPE);
+        $name = $stream->expect(Twig_Token::NAME_TYPE)->getValue();
         $arguments = null;
         if ($stream->test(Twig_Token::PUNCTUATION_TYPE, '(')) {
-            $arguments = $parser->getExpressionParser()->parseArguments();
+            $arguments = $parser->getExpressionParser()->parseArguments(true);
         }
 
-        return new Twig_Node_Expression_Test($node, $name->getValue(), $arguments, $parser->getCurrentToken()->getLine());
+        $class = $this->getTestNodeClass($parser, $name, $node->getLine());
+
+        return new $class($node, $name, $arguments, $parser->getCurrentToken()->getLine());
+    }
+
+    protected function getTestNodeClass(Twig_Parser $parser, $name, $line)
+    {
+        $env = $parser->getEnvironment();
+        $testMap = $env->getTests();
+        if (!isset($testMap[$name])) {
+            $message = sprintf('The test "%s" does not exist', $name);
+            if ($alternatives = $env->computeAlternatives($name, array_keys($env->getTests()))) {
+                $message = sprintf('%s. Did you mean "%s"', $message, implode('", "', $alternatives));
+            }
+
+            throw new Twig_Error_Syntax($message, $line, $parser->getFilename());
+        }
+
+        if ($testMap[$name] instanceof Twig_SimpleTest) {
+            return $testMap[$name]->getNodeClass();
+        }
+
+        return $testMap[$name] instanceof Twig_Test_Node ? $testMap[$name]->getClass() : 'Twig_Node_Expression_Test';
     }
 
     /**
@@ -192,18 +311,77 @@ class Twig_Extension_Core extends Twig_Extension
 /**
  * Cycles over a value.
  *
- * @param ArrayAccess|array $values An array or an ArrayAccess instance
- * @param integer           $i      The cycle value
+ * @param ArrayAccess|array $values   An array or an ArrayAccess instance
+ * @param integer           $position The cycle position
  *
  * @return string The next value in the cycle
  */
-function twig_cycle($values, $i)
+function twig_cycle($values, $position)
 {
     if (!is_array($values) && !$values instanceof ArrayAccess) {
         return $values;
     }
 
-    return $values[$i % count($values)];
+    return $values[$position % count($values)];
+}
+
+/**
+ * Returns a random value depending on the supplied parameter type:
+ * - a random item from a Traversable or array
+ * - a random character from a string
+ * - a random integer between 0 and the integer parameter
+ *
+ * @param Twig_Environment                 $env    A Twig_Environment instance
+ * @param Traversable|array|integer|string $values The values to pick a random item from
+ *
+ * @throws Twig_Error_Runtime When $values is an empty array (does not apply to an empty string which is returned as is).
+ *
+ * @return mixed A random value from the given sequence
+ */
+function twig_random(Twig_Environment $env, $values = null)
+{
+    if (null === $values) {
+        return mt_rand();
+    }
+
+    if (is_int($values) || is_float($values)) {
+        return $values < 0 ? mt_rand($values, 0) : mt_rand(0, $values);
+    }
+
+    if ($values instanceof Traversable) {
+        $values = iterator_to_array($values);
+    } elseif (is_string($values)) {
+        if ('' === $values) {
+            return '';
+        }
+        if (null !== $charset = $env->getCharset()) {
+            if ('UTF-8' != $charset) {
+                $values = twig_convert_encoding($values, 'UTF-8', $charset);
+            }
+
+            // unicode version of str_split()
+            // split at all positions, but not after the start and not before the end
+            $values = preg_split('/(?<!^)(?!$)/u', $values);
+
+            if ('UTF-8' != $charset) {
+                foreach ($values as $i => $value) {
+                    $values[$i] = twig_convert_encoding($value, $charset, 'UTF-8');
+                }
+            }
+        } else {
+            return $values[mt_rand(0, strlen($values) - 1)];
+        }
+    }
+
+    if (!is_array($values)) {
+        return $values;
+    }
+
+    if (0 === count($values)) {
+        throw new Twig_Error_Runtime('The random function cannot pick from an empty array.');
+    }
+
+    return $values[array_rand($values, 1)];
 }
 
 /**
@@ -213,44 +391,143 @@ function twig_cycle($values, $i)
  *   {{ post.published_at|date("m/d/Y") }}
  * </pre>
  *
+ * @param Twig_Environment             $env      A Twig_Environment instance
+ * @param DateTime|DateInterval|string $date     A date
+ * @param string                       $format   A format
+ * @param DateTimeZone|string          $timezone A timezone
+ *
+ * @return string The formatted date
+ */
+function twig_date_format_filter(Twig_Environment $env, $date, $format = null, $timezone = null)
+{
+    if (null === $format) {
+        $formats = $env->getExtension('core')->getDateFormat();
+        $format = $date instanceof DateInterval ? $formats[1] : $formats[0];
+    }
+
+    if ($date instanceof DateInterval) {
+        return $date->format($format);
+    }
+
+    return twig_date_converter($env, $date, $timezone)->format($format);
+}
+
+/**
+ * Returns a new date object modified
+ *
+ * <pre>
+ *   {{ post.published_at|date_modify("-1day")|date("m/d/Y") }}
+ * </pre>
+ *
+ * @param Twig_Environment  $env      A Twig_Environment instance
+ * @param DateTime|string   $date     A date
+ * @param string            $modifier A modifier string
+ *
+ * @return DateTime A new date object
+ */
+function twig_date_modify_filter(Twig_Environment $env, $date, $modifier)
+{
+    $date = twig_date_converter($env, $date, false);
+    $date->modify($modifier);
+
+    return $date;
+}
+
+/**
+ * Converts an input to a DateTime instance.
+ *
+ * <pre>
+ *    {% if date(user.created_at) < date('+2days') %}
+ *      {# do something #}
+ *    {% endif %}
+ * </pre>
+ *
+ * @param Twig_Environment    $env      A Twig_Environment instance
  * @param DateTime|string     $date     A date
- * @param string              $format   A format
  * @param DateTimeZone|string $timezone A timezone
  *
- * @return string The formatter date
+ * @return DateTime A DateTime instance
  */
-function twig_date_format_filter($date, $format = 'F j, Y H:i', $timezone = null)
+function twig_date_converter(Twig_Environment $env, $date = null, $timezone = null)
 {
-    if (!$date instanceof DateTime) {
-        if (ctype_digit((string) $date)) {
-            $date = new DateTime('@'.$date);
-            $date->setTimezone(new DateTimeZone(date_default_timezone_get()));
-        } else {
-            $date = new DateTime($date);
-        }
+    // determine the timezone
+    if (!$timezone) {
+        $defaultTimezone = $env->getExtension('core')->getTimezone();
+    } elseif (!$timezone instanceof DateTimeZone) {
+        $defaultTimezone = new DateTimeZone($timezone);
+    } else {
+        $defaultTimezone = $timezone;
     }
 
-    if (null !== $timezone) {
-        if (!$timezone instanceof DateTimeZone) {
-            $timezone = new DateTimeZone($timezone);
+    if ($date instanceof DateTime) {
+        $date = clone $date;
+        if (false !== $timezone) {
+            $date->setTimezone($defaultTimezone);
         }
 
-        $date->setTimezone($timezone);
+        return $date;
+    }
+
+    $asString = (string) $date;
+    if (ctype_digit($asString) || (!empty($asString) && '-' === $asString[0] && ctype_digit(substr($asString, 1)))) {
+        $date = '@'.$date;
     }
 
-    return $date->format($format);
+    $date = new DateTime($date, $defaultTimezone);
+    if (false !== $timezone) {
+        $date->setTimezone($defaultTimezone);
+    }
+
+    return $date;
+}
+
+/**
+ * Number format filter.
+ *
+ * All of the formatting options can be left null, in that case the defaults will
+ * be used.  Supplying any of the parameters will override the defaults set in the
+ * environment object.
+ *
+ * @param Twig_Environment    $env          A Twig_Environment instance
+ * @param mixed               $number       A float/int/string of the number to format
+ * @param integer             $decimal      The number of decimal points to display.
+ * @param string              $decimalPoint The character(s) to use for the decimal point.
+ * @param string              $thousandSep  The character(s) to use for the thousands separator.
+ *
+ * @return string The formatted number
+ */
+function twig_number_format_filter(Twig_Environment $env, $number, $decimal = null, $decimalPoint = null, $thousandSep = null)
+{
+    $defaults = $env->getExtension('core')->getNumberFormat();
+    if (null === $decimal) {
+        $decimal = $defaults[0];
+    }
+
+    if (null === $decimalPoint) {
+        $decimalPoint = $defaults[1];
+    }
+
+    if (null === $thousandSep) {
+        $thousandSep = $defaults[2];
+    }
+
+    return number_format((float) $number, $decimal, $decimalPoint, $thousandSep);
 }
 
 /**
- * URL encodes a string.
+ * URL encodes a string as a path segment or an array as a query string.
  *
- * @param string $url A URL
- * @param bool   $raw true to use rawurlencode() instead of urlencode
+ * @param string|array $url A URL or an array of query parameters
+ * @param bool         $raw true to use rawurlencode() instead of urlencode
  *
  * @return string The URL encoded value
  */
 function twig_urlencode_filter($url, $raw = false)
 {
+    if (is_array($url)) {
+        return http_build_query($url, '', '&');
+    }
+
     if ($raw) {
         return rawurlencode($url);
     }
@@ -260,7 +537,7 @@ function twig_urlencode_filter($url, $raw = false)
 
 if (version_compare(PHP_VERSION, '5.3.0', '<')) {
     /**
-     * JSON encodes a PHP variable.
+     * JSON encodes a variable.
      *
      * @param mixed   $value   The value to encode.
      * @param integer $options Not used on PHP 5.2.x
@@ -279,7 +556,7 @@ if (version_compare(PHP_VERSION, '5.3.0', '<')) {
     }
 } else {
     /**
-     * JSON encodes a PHP variable.
+     * JSON encodes a variable.
      *
      * @param mixed   $value   The value to encode.
      * @param integer $options Bitmask consisting of JSON_HEX_QUOT, JSON_HEX_TAG, JSON_HEX_AMP, JSON_HEX_APOS, JSON_NUMERIC_CHECK, JSON_PRETTY_PRINT, JSON_UNESCAPED_SLASHES, JSON_FORCE_OBJECT
@@ -324,13 +601,73 @@ function _twig_markup2string(&$value)
 function twig_array_merge($arr1, $arr2)
 {
     if (!is_array($arr1) || !is_array($arr2)) {
-        throw new Twig_Error_Runtime('The merge filter only work with arrays or hashes.');
+        throw new Twig_Error_Runtime('The merge filter only works with arrays or hashes.');
     }
 
     return array_merge($arr1, $arr2);
 }
 
 /**
+ * Slices a variable.
+ *
+ * @param Twig_Environment $env          A Twig_Environment instance
+ * @param mixed            $item         A variable
+ * @param integer          $start        Start of the slice
+ * @param integer          $length       Size of the slice
+ * @param Boolean          $preserveKeys Whether to preserve key or not (when the input is an array)
+ *
+ * @return mixed The sliced variable
+ */
+function twig_slice(Twig_Environment $env, $item, $start, $length = null, $preserveKeys = false)
+{
+    if ($item instanceof Traversable) {
+        $item = iterator_to_array($item, false);
+    }
+
+    if (is_array($item)) {
+        return array_slice($item, $start, $length, $preserveKeys);
+    }
+
+    $item = (string) $item;
+
+    if (function_exists('mb_get_info') && null !== $charset = $env->getCharset()) {
+        return mb_substr($item, $start, null === $length ? mb_strlen($item, $charset) - $start : $length, $charset);
+    }
+
+    return null === $length ? substr($item, $start) : substr($item, $start, $length);
+}
+
+/**
+ * Returns the first element of the item.
+ *
+ * @param Twig_Environment $env  A Twig_Environment instance
+ * @param mixed            $item A variable
+ *
+ * @return mixed The first element of the item
+ */
+function twig_first(Twig_Environment $env, $item)
+{
+    $elements = twig_slice($env, $item, 0, 1, false);
+
+    return is_string($elements) ? $elements[0] : current($elements);
+}
+
+/**
+ * Returns the last element of the item.
+ *
+ * @param Twig_Environment $env  A Twig_Environment instance
+ * @param mixed            $item A variable
+ *
+ * @return mixed The last element of the item
+ */
+function twig_last(Twig_Environment $env, $item)
+{
+    $elements = twig_slice($env, $item, -1, 1, false);
+
+    return is_string($elements) ? $elements[0] : current($elements);
+}
+
+/**
  * Joins the values to a string.
  *
  * The separator between elements is an empty string per default, you can define it with the optional parameter.
@@ -350,30 +687,55 @@ function twig_array_merge($arr1, $arr2)
  */
 function twig_join_filter($value, $glue = '')
 {
+    if ($value instanceof Traversable) {
+        $value = iterator_to_array($value, false);
+    }
+
     return implode($glue, (array) $value);
 }
 
 /**
- * Returns the value or the default value when it is undefined or empty.
+ * Splits the string into an array.
  *
  * <pre>
+ *  {{ "one,two,three"|split(',') }}
+ *  {# returns [one, two, three] #}
  *
- *  {{ var.foo|default('foo item on var is not defined') }}
+ *  {{ "one,two,three,four,five"|split(',', 3) }}
+ *  {# returns [one, two, "three,four,five"] #}
  *
+ *  {{ "123"|split('') }}
+ *  {# returns [1, 2, 3] #}
+ *
+ *  {{ "aabbcc"|split('', 2) }}
+ *  {# returns [aa, bb, cc] #}
  * </pre>
  *
- * @param mixed $value   A value
- * @param mixed $default The default value
+ * @param string  $value     A string
+ * @param string  $delimiter The delimiter
+ * @param integer $limit     The limit
  *
- * @param mixed The value or the default value;
+ * @return array The split string as an array
  */
-function twig_default_filter($value, $default = '')
+function twig_split_filter($value, $delimiter, $limit = null)
+{
+    if (empty($delimiter)) {
+        return str_split($value, null === $limit ? 1 : $limit);
+    }
+
+    return null === $limit ? explode($delimiter, $value) : explode($delimiter, $value, $limit);
+}
+
+// The '_default' filter is used internally to avoid using the ternary operator
+// which costs a lot for big contexts (before PHP 5.4). So, on average,
+// a function call is cheaper.
+function _twig_default_filter($value, $default = '')
 {
     if (twig_test_empty($value)) {
         return $default;
-    } else {
-        return $value;
     }
+
+    return $value;
 }
 
 /**
@@ -405,23 +767,43 @@ function twig_get_array_keys_filter($array)
 }
 
 /**
- * Reverses an array.
+ * Reverses a variable.
  *
- * @param array|Traversable $array An array or a Traversable instance
+ * @param Twig_Environment         $env          A Twig_Environment instance
+ * @param array|Traversable|string $item         An array, a Traversable instance, or a string
+ * @param Boolean                  $preserveKeys Whether to preserve key or not
  *
- * return array The array reversed
+ * @return mixed The reversed input
  */
-function twig_reverse_filter($array)
+function twig_reverse_filter(Twig_Environment $env, $item, $preserveKeys = false)
 {
-    if (is_object($array) && $array instanceof Traversable) {
-        return array_reverse(iterator_to_array($array));
+    if (is_object($item) && $item instanceof Traversable) {
+        return array_reverse(iterator_to_array($item), $preserveKeys);
     }
 
-    if (!is_array($array)) {
-        return array();
+    if (is_array($item)) {
+        return array_reverse($item, $preserveKeys);
     }
 
-    return array_reverse($array);
+    if (null !== $charset = $env->getCharset()) {
+        $string = (string) $item;
+
+        if ('UTF-8' != $charset) {
+            $item = twig_convert_encoding($string, 'UTF-8', $charset);
+        }
+
+        preg_match_all('/./us', $item, $matches);
+
+        $string = implode('', array_reverse($matches[0]));
+
+        if ('UTF-8' != $charset) {
+            $string = twig_convert_encoding($string, $charset, 'UTF-8');
+        }
+
+        return $string;
+    }
+
+    return strrev((string) $item);
 }
 
 /**
@@ -440,78 +822,151 @@ function twig_sort_filter($array)
 function twig_in_filter($value, $compare)
 {
     if (is_array($compare)) {
-        return in_array($value, $compare);
+        return in_array($value, $compare, is_object($value));
     } elseif (is_string($compare)) {
+        if (!strlen($value)) {
+            return empty($compare);
+        }
+
         return false !== strpos($compare, (string) $value);
-    } elseif (is_object($compare) && $compare instanceof Traversable) {
-        return in_array($value, iterator_to_array($compare, false));
+    } elseif ($compare instanceof Traversable) {
+        return in_array($value, iterator_to_array($compare, false), is_object($value));
     }
 
     return false;
 }
 
 /**
- * Replaces placeholders in a string.
- *
- * <pre>
- *  {{ "I like %this% and %that%."|replace({'%this%': foo, '%that%': "bar"}) }}
- * </pre>
- *
- * @param string $pattern      A string
- * @param string $replacements The values for the placeholders
- *
- * @return string The string where the placeholders have been replaced
- */
-function twig_strtr($pattern, $replacements)
-{
-    return str_replace(array_keys($replacements), array_values($replacements), $pattern);
-}
-
-/**
  * Escapes a string.
  *
- * @param Twig_Environment $env     A Twig_Environment instance
- * @param string           $string  The value to be escaped
- * @param string           $type    The escaping strategy
- * @param string           $charset The charset
+ * @param Twig_Environment $env        A Twig_Environment instance
+ * @param string           $string     The value to be escaped
+ * @param string           $strategy   The escaping strategy
+ * @param string           $charset    The charset
+ * @param Boolean          $autoescape Whether the function is called by the auto-escaping feature (true) or by the developer (false)
  */
-function twig_escape_filter(Twig_Environment $env, $string, $type = 'html', $charset = null)
+function twig_escape_filter(Twig_Environment $env, $string, $strategy = 'html', $charset = null, $autoescape = false)
 {
-    if (is_object($string) && $string instanceof Twig_Markup) {
+    if ($autoescape && $string instanceof Twig_Markup) {
         return $string;
     }
 
-    if (!is_string($string) && !(is_object($string) && method_exists($string, '__toString'))) {
-        return $string;
+    if (!is_string($string)) {
+        if (is_object($string) && method_exists($string, '__toString')) {
+            $string = (string) $string;
+        } else {
+            return $string;
+        }
     }
 
     if (null === $charset) {
         $charset = $env->getCharset();
     }
 
-    switch ($type) {
+    switch ($strategy) {
+        case 'html':
+            // see http://php.net/htmlspecialchars
+
+            // Using a static variable to avoid initializing the array
+            // each time the function is called. Moving the declaration on the
+            // top of the function slow downs other escaping strategies.
+            static $htmlspecialcharsCharsets = array(
+                'ISO-8859-1' => true, 'ISO8859-1' => true,
+                'ISO-8859-15' => true, 'ISO8859-15' => true,
+                'utf-8' => true, 'UTF-8' => true,
+                'CP866' => true, 'IBM866' => true, '866' => true,
+                'CP1251' => true, 'WINDOWS-1251' => true, 'WIN-1251' => true,
+                '1251' => true,
+                'CP1252' => true, 'WINDOWS-1252' => true, '1252' => true,
+                'KOI8-R' => true, 'KOI8-RU' => true, 'KOI8R' => true,
+                'BIG5' => true, '950' => true,
+                'GB2312' => true, '936' => true,
+                'BIG5-HKSCS' => true,
+                'SHIFT_JIS' => true, 'SJIS' => true, '932' => true,
+                'EUC-JP' => true, 'EUCJP' => true,
+                'ISO8859-5' => true, 'ISO-8859-5' => true, 'MACROMAN' => true,
+            );
+
+            if (isset($htmlspecialcharsCharsets[$charset])) {
+                return htmlspecialchars($string, ENT_QUOTES | ENT_SUBSTITUTE, $charset);
+            }
+
+            if (isset($htmlspecialcharsCharsets[strtoupper($charset)])) {
+                // cache the lowercase variant for future iterations
+                $htmlspecialcharsCharsets[$charset] = true;
+
+                return htmlspecialchars($string, ENT_QUOTES | ENT_SUBSTITUTE, $charset);
+            }
+
+            $string = twig_convert_encoding($string, 'UTF-8', $charset);
+            $string = htmlspecialchars($string, ENT_QUOTES | ENT_SUBSTITUTE, 'UTF-8');
+
+            return twig_convert_encoding($string, $charset, 'UTF-8');
+
         case 'js':
             // escape all non-alphanumeric characters
             // into their \xHH or \uHHHH representations
             if ('UTF-8' != $charset) {
-                $string = _twig_convert_encoding($string, 'UTF-8', $charset);
+                $string = twig_convert_encoding($string, 'UTF-8', $charset);
             }
 
-            if (null === $string = preg_replace_callback('#[^\p{L}\p{N} ]#u', '_twig_escape_js_callback', $string)) {
+            if (0 == strlen($string) ? false : (1 == preg_match('/^./su', $string) ? false : true)) {
                 throw new Twig_Error_Runtime('The string to escape is not a valid UTF-8 string.');
             }
 
+            $string = preg_replace_callback('#[^a-zA-Z0-9,\._]#Su', '_twig_escape_js_callback', $string);
+
             if ('UTF-8' != $charset) {
-                $string = _twig_convert_encoding($string, $charset, 'UTF-8');
+                $string = twig_convert_encoding($string, $charset, 'UTF-8');
             }
 
             return $string;
 
-        case 'html':
-            return htmlspecialchars($string, ENT_QUOTES | ENT_SUBSTITUTE, $charset);
+        case 'css':
+            if ('UTF-8' != $charset) {
+                $string = twig_convert_encoding($string, 'UTF-8', $charset);
+            }
+
+            if (0 == strlen($string) ? false : (1 == preg_match('/^./su', $string) ? false : true)) {
+                throw new Twig_Error_Runtime('The string to escape is not a valid UTF-8 string.');
+            }
+
+            $string = preg_replace_callback('#[^a-zA-Z0-9]#Su', '_twig_escape_css_callback', $string);
+
+            if ('UTF-8' != $charset) {
+                $string = twig_convert_encoding($string, $charset, 'UTF-8');
+            }
+
+            return $string;
+
+        case 'html_attr':
+            if ('UTF-8' != $charset) {
+                $string = twig_convert_encoding($string, 'UTF-8', $charset);
+            }
+
+            if (0 == strlen($string) ? false : (1 == preg_match('/^./su', $string) ? false : true)) {
+                throw new Twig_Error_Runtime('The string to escape is not a valid UTF-8 string.');
+            }
+
+            $string = preg_replace_callback('#[^a-zA-Z0-9,\.\-_]#Su', '_twig_escape_html_attr_callback', $string);
+
+            if ('UTF-8' != $charset) {
+                $string = twig_convert_encoding($string, $charset, 'UTF-8');
+            }
+
+            return $string;
+
+        case 'url':
+            // hackish test to avoid version_compare that is much slower, this works unless PHP releases a 5.10.*
+            // at that point however PHP 5.2.* support can be removed
+            if (PHP_VERSION < '5.3.0') {
+                return str_replace('%7E', '~', rawurlencode($string));
+            }
+
+            return rawurlencode($string);
 
         default:
-            throw new Twig_Error_Runtime(sprintf('Invalid escape type "%s".', $type));
+            throw new Twig_Error_Runtime(sprintf('Invalid escaping strategy "%s" (valid ones: html, js, url, css, and html_attr).', $strategy));
     }
 }
 
@@ -521,28 +976,26 @@ function twig_escape_filter_is_safe(Twig_Node $filterArgs)
     foreach ($filterArgs as $arg) {
         if ($arg instanceof Twig_Node_Expression_Constant) {
             return array($arg->getAttribute('value'));
-        } else {
-            return array();
         }
 
-        break;
+        return array();
     }
 
     return array('html');
 }
 
-if (function_exists('iconv')) {
-    function _twig_convert_encoding($string, $to, $from)
+if (function_exists('mb_convert_encoding')) {
+    function twig_convert_encoding($string, $to, $from)
     {
-        return iconv($from, $to, $string);
+        return mb_convert_encoding($string, $to, $from);
     }
-} elseif (function_exists('mb_convert_encoding')) {
-    function _twig_convert_encoding($string, $to, $from)
+} elseif (function_exists('iconv')) {
+    function twig_convert_encoding($string, $to, $from)
     {
-        return mb_convert_encoding($string, $to, $from);
+        return iconv($from, $to, $string);
     }
 } else {
-    function _twig_convert_encoding($string, $to, $from)
+    function twig_convert_encoding($string, $to, $from)
     {
         throw new Twig_Error_Runtime('No suitable convert encoding function (use UTF-8 as your encoding or install the iconv or mbstring extension).');
     }
@@ -554,22 +1007,98 @@ function _twig_escape_js_callback($matches)
 
     // \xHH
     if (!isset($char[1])) {
-        return '\\x'.substr('00'.bin2hex($char), -2);
+        return '\\x'.strtoupper(substr('00'.bin2hex($char), -2));
+    }
+
+    // \uHHHH
+    $char = twig_convert_encoding($char, 'UTF-16BE', 'UTF-8');
+
+    return '\\u'.strtoupper(substr('0000'.bin2hex($char), -4));
+}
+
+function _twig_escape_css_callback($matches)
+{
+    $char = $matches[0];
+
+    // \xHH
+    if (!isset($char[1])) {
+        $hex = ltrim(strtoupper(bin2hex($char)), '0');
+        if (0 === strlen($hex)) {
+            $hex = '0';
+        }
+
+        return '\\'.$hex.' ';
     }
 
     // \uHHHH
-    $char = _twig_convert_encoding($char, 'UTF-16BE', 'UTF-8');
+    $char = twig_convert_encoding($char, 'UTF-16BE', 'UTF-8');
+
+    return '\\'.ltrim(strtoupper(bin2hex($char)), '0').' ';
+}
+
+/**
+ * This function is adapted from code coming from Zend Framework.
+ *
+ * @copyright Copyright (c) 2005-2012 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+function _twig_escape_html_attr_callback($matches)
+{
+    /*
+     * While HTML supports far more named entities, the lowest common denominator
+     * has become HTML5's XML Serialisation which is restricted to the those named
+     * entities that XML supports. Using HTML entities would result in this error:
+     *     XML Parsing Error: undefined entity
+     */
+    static $entityMap = array(
+        34 => 'quot', /* quotation mark */
+        38 => 'amp',  /* ampersand */
+        60 => 'lt',   /* less-than sign */
+        62 => 'gt',   /* greater-than sign */
+    );
+
+    $chr = $matches[0];
+    $ord = ord($chr);
+
+    /**
+     * The following replaces characters undefined in HTML with the
+     * hex entity for the Unicode replacement character.
+     */
+    if (($ord <= 0x1f && $chr != "\t" && $chr != "\n" && $chr != "\r") || ($ord >= 0x7f && $ord <= 0x9f)) {
+        return '&#xFFFD;';
+    }
+
+    /**
+     * Check if the current character to escape has a name entity we should
+     * replace it with while grabbing the hex value of the character.
+     */
+    if (strlen($chr) == 1) {
+        $hex = strtoupper(substr('00'.bin2hex($chr), -2));
+    } else {
+        $chr = twig_convert_encoding($chr, 'UTF-16BE', 'UTF-8');
+        $hex = strtoupper(substr('0000'.bin2hex($chr), -4));
+    }
+
+    $int = hexdec($hex);
+    if (array_key_exists($int, $entityMap)) {
+        return sprintf('&%s;', $entityMap[$int]);
+    }
+
+    /**
+     * Per OWASP recommendations, we'll use hex entities for any other
+     * characters where a named entity does not exist.
+     */
 
-    return '\\u'.substr('0000'.bin2hex($char), -4);
+    return sprintf('&#x%s;', $hex);
 }
 
 // add multibyte extensions if possible
 if (function_exists('mb_get_info')) {
     /**
-     * Returns the length of a PHP variable.
+     * Returns the length of a variable.
      *
      * @param Twig_Environment $env   A Twig_Environment instance
-     * @param mixed            $thing A PHP variable
+     * @param mixed            $thing A variable
      *
      * @return integer The length of the value
      */
@@ -648,13 +1177,12 @@ if (function_exists('mb_get_info')) {
     }
 }
 // and byte fallback
-else
-{
+else {
     /**
-     * Returns the length of a PHP variable.
+     * Returns the length of a variable.
      *
      * @param Twig_Environment $env   A Twig_Environment instance
-     * @param mixed            $thing A PHP variable
+     * @param mixed            $thing A variable
      *
      * @return integer The length of the value
      */
@@ -693,154 +1221,135 @@ else
 /* used internally */
 function twig_ensure_traversable($seq)
 {
-    if (is_array($seq) || (is_object($seq) && $seq instanceof Traversable)) {
+    if ($seq instanceof Traversable || is_array($seq)) {
         return $seq;
-    } else {
-        return array();
     }
+
+    return array();
 }
 
 /**
- * Checks that a variable points to the same memory address than another one.
+ * Checks if a variable is empty.
  *
  * <pre>
- * {% if foo.attribute is sameas(false) %}
- *    the foo attribute really is the ``false`` PHP value
+ * {# evaluates to true if the foo variable is null, false, or the empty string #}
+ * {% if foo is empty %}
+ *     {# ... #}
  * {% endif %}
  * </pre>
  *
- * @param mixed $value A PHP variable
- * @param mixed $test  The PHP variable to test against
+ * @param mixed $value A variable
  *
- * @return Boolean true if the values are the same, false otherwise
+ * @return Boolean true if the value is empty, false otherwise
  */
-function twig_test_sameas($value, $test)
+function twig_test_empty($value)
 {
-    return $value === $test;
-}
+    if ($value instanceof Countable) {
+        return 0 == count($value);
+    }
 
-/**
- * Checks that a variable is null.
- *
- * <pre>
- *  {{ var is none }}
- * </pre>
- *
- * @param mixed $value a PHP variable.
- *
- * @return Boolean true if the value is null, false otherwise
- */
-function twig_test_none($value)
-{
-    return null === $value;
+    return '' === $value || false === $value || null === $value || array() === $value;
 }
 
 /**
- * Checks if a variable is divisible by a number.
+ * Checks if a variable is traversable.
  *
  * <pre>
- *  {% if loop.index is divisibleby(3) %}
+ * {# evaluates to true if the foo variable is an array or a traversable object #}
+ * {% if foo is traversable %}
+ *     {# ... #}
+ * {% endif %}
  * </pre>
  *
- * @param integer $value A PHP value
- * @param integer $num   A number
+ * @param mixed $value A variable
  *
- * @return Boolean true if the value is divisible by the number, false otherwise
+ * @return Boolean true if the value is traversable
  */
-function twig_test_divisibleby($value, $num)
+function twig_test_iterable($value)
 {
-    return 0 == $value % $num;
+    return $value instanceof Traversable || is_array($value);
 }
 
 /**
- * Checks if a number is even.
- *
- * <pre>
- *  {{ var is even }}
- * </pre>
+ * Renders a template.
  *
- * @param integer $value An integer
+ * @param string  $template       The template to render
+ * @param array   $variables      The variables to pass to the template
+ * @param Boolean $with_context   Whether to pass the current context variables or not
+ * @param Boolean $ignore_missing Whether to ignore missing templates or not
+ * @param Boolean $sandboxed      Whether to sandbox the template or not
  *
- * @return Boolean true if the value is even, false otherwise
+ * @return string The rendered template
  */
-function twig_test_even($value)
+function twig_include(Twig_Environment $env, $context, $template, $variables = array(), $withContext = true, $ignoreMissing = false, $sandboxed = false)
 {
-    return $value % 2 == 0;
-}
+    if ($withContext) {
+        $variables = array_merge($context, $variables);
+    }
 
-/**
- * Checks if a number is odd.
- *
- * <pre>
- *  {{ var is odd }}
- * </pre>
- *
- * @param integer $value An integer
- *
- * @return Boolean true if the value is odd, false otherwise
- */
-function twig_test_odd($value)
-{
-    return $value % 2 == 1;
-}
+    if ($isSandboxed = $sandboxed && $env->hasExtension('sandbox')) {
+        $sandbox = $env->getExtension('sandbox');
+        if (!$alreadySandboxed = $sandbox->isSandboxed()) {
+            $sandbox->enableSandbox();
+        }
+    }
 
-/**
- * Checks if a variable is the exact same value as a constant.
- *
- * <pre>
- *  {% if post.status is constant('Post::PUBLISHED') %}
- *    the status attribute is exactly the same as Post::PUBLISHED
- *  {% endif %}
- * </pre>
- *
- * @param mixed $value    A PHP value
- * @param mixed $constant The constant to test against
- *
- * @return Boolean true if the value is the same as the constant, false otherwise
- */
-function twig_test_constant($value, $constant)
-{
-    return constant($constant) === $value;
+    try {
+        return $env->resolveTemplate($template)->render($variables);
+    } catch (Twig_Error_Loader $e) {
+        if (!$ignoreMissing) {
+            throw $e;
+        }
+    }
+
+    if ($isSandboxed && !$alreadySandboxed) {
+        $sandbox->disableSandbox();
+    }
 }
 
 /**
- * Checks if a variable is defined in the current context.
- *
- * <pre>
- * {# defined works with variable names #}
- * {% if foo is defined %}
- *     {# ... #}
- * {% endif %}
- * </pre>
+ * Provides the ability to get constants from instances as well as class/global constants.
  *
- * @param mixed $name    A PHP variable
- * @param array $context The current context
+ * @param string      $constant The name of the constant
+ * @param null|object $object   The object to get the constant from
  *
- * @return Boolean true if the value is defined, false otherwise
+ * @return string
  */
-function twig_test_defined($name, $context)
+function twig_constant($constant, $object = null)
 {
-    return array_key_exists($name, $context);
+    if (null !== $object) {
+        $constant = get_class($object).'::'.$constant;
+    }
+
+    return constant($constant);
 }
 
 /**
- * Checks if a variable is empty.
- *
- * <pre>
- * {# evaluates to true if the foo variable is null, false, or the empty string #}
- * {% if foo is empty %}
- *     {# ... #}
- * {% endif %}
- * </pre>
+ * Batches item.
  *
- * @param mixed $value A PHP variable
+ * @param array   $items An array of items
+ * @param integer $size  The size of the batch
+ * @param string  $fill  A string to fill missing items
  *
- * @return Boolean true if the value is empty, false otherwise
+ * @return array
  */
-function twig_test_empty($value)
+function twig_array_batch($items, $size, $fill = null)
 {
-    if ($value instanceof Countable) {
-        return 0 == count($value);
+    if ($items instanceof Traversable) {
+        $items = iterator_to_array($items, false);
     }
-    return false === $value || (empty($value) && '0' != $value);
+
+    $size = ceil($size);
+
+    $result = array_chunk($items, $size, true);
+
+    if (null !== $fill) {
+        $last = count($result) - 1;
+        $result[$last] = array_merge(
+            $result[$last],
+            array_fill(0, $size - count($result[$last]), $fill)
+        );
+    }
+
+    return $result;
 }