/**
  * Compile the specified tag and return PHP code to handle it.
  *
  * @param XenForo_Template_Compiler The invoking compiler
  * @param string                 Name of the tag called
  * @param array                  Attributes for the tag (may be empty)
  * @param array                  Nodes (tags/curlies/text) within this tag (may be empty)
  * @param array                  Compilation options
  *
  * @return string
  */
 public function compile(XenForo_Template_Compiler $compiler, $tag, array $attributes, array $children, array $options)
 {
     if (empty($options['allowRawStatements'])) {
         throw $compiler->getNewCompilerException(new XenForo_Phrase('x_tags_only_used_where_full_statements_allowed', array('tag' => 'callback')));
     }
     if (empty($attributes['class'])) {
         throw $compiler->getNewCompilerException(new XenForo_Phrase('missing_attribute_x_for_tag_y', array('attribute' => 'class', 'tag' => 'callback')));
     }
     if (empty($attributes['method'])) {
         throw $compiler->getNewCompilerException(new XenForo_Phrase('missing_attribute_x_for_tag_y', array('attribute' => 'method', 'tag' => 'callback')));
     }
     $noEscapeOptions = array_merge($options, array('varEscape' => false));
     $class = $compiler->compileAndCombineSegments($attributes['class'], $noEscapeOptions);
     $method = $compiler->compileAndCombineSegments($attributes['method'], $noEscapeOptions);
     $compiled = $compiler->compileIntoVariable($children, $var, $options);
     if (!empty($attributes['params'])) {
         $params = $compiler->compileAndCombineSegments($attributes['params'], $noEscapeOptions);
     } else {
         $params = 'array()';
     }
     $statement = $compiler->getNewRawStatement();
     $statement->addStatement($compiled);
     $statement->addStatement('$' . $compiler->getOutputVar() . ' .= $this->callTemplateCallback(' . $class . ', ' . $method . ', $' . $var . ', ' . $params . ");\n" . 'unset($' . $var . ");\n");
     return $statement;
 }

 /**
  * Compile the var named in the first argument and return PHP code to access it raw.
  *
  * @param XenForo_Template_Compiler The invoking compiler
  * @param string                 Name of the function called
  * @param array                  Arguments to the function (should have at least 1)
  * @param array                  Compilation options
  *
  * @return string
  */
 public function compile(XenForo_Template_Compiler $compiler, $function, array $arguments, array $options)
 {
     if (count($arguments) != 1) {
         throw $compiler->getNewCompilerArgumentException();
     }
     return $compiler->compileVarRef($arguments[0], $options);
 }

 /**
  * Compile the specified tag and return PHP code to handle it.
  *
  * @param XenForo_Template_Compiler The invoking compiler
  * @param string                 Name of the tag called
  * @param array                  Attributes for the tag (may be empty)
  * @param array                  Nodes (tags/curlies/text) within this tag (may be empty)
  * @param array                  Compilation options
  *
  * @return string
  */
 public function compile(XenForo_Template_Compiler $compiler, $tag, array $attributes, array $children, array $options)
 {
     if (empty($attributes['template'])) {
         throw $compiler->getNewCompilerException(new XenForo_Phrase('missing_attribute_x_for_tag_y', array('attribute' => 'template', 'tag' => 'edithint')));
     }
     return '';
 }

 /**
  * Compile the specified tag and return PHP code to handle it.
  *
  * @param XenForo_Template_Compiler The invoking compiler
  * @param string                 Name of the tag called
  * @param array                  Attributes for the tag (may be empty)
  * @param array                  Nodes (tags/curlies/text) within this tag (may be empty)
  * @param array                  Compilation options
  *
  * @return string
  */
 public function compile(XenForo_Template_Compiler $compiler, $tag, array $attributes, array $children, array $options)
 {
     if (empty($attributes['url'])) {
         throw $compiler->getNewCompilerException(new XenForo_Phrase('missing_attribute_x_for_tag_y', array('attribute' => 'url', 'tag' => 'formaction')));
     }
     return 'XenForo_Template_Helper_Core::getHiddenInputsFromUrl(' . $compiler->compileAndCombineSegments($attributes['url'], $options) . ')';
 }

 /**
  * Compile the specified tag and return PHP code to handle it.
  *
  * @param XenForo_Template_Compiler The invoking compiler
  * @param string                 Name of the tag called
  * @param array                  Attributes for the tag (may be empty)
  * @param array                  Nodes (tags/curlies/text) within this tag (may be empty)
  * @param array                  Compilation options
  *
  * @return string
  */
 public function compile(XenForo_Template_Compiler $compiler, $tag, array $attributes, array $children, array $options)
 {
     if ($tag == 'breadcrumb') {
         throw $compiler->getNewCompilerException(new XenForo_Phrase('breadcrumb_tag_must_be_within_navigation_tag'));
     }
     if (empty($options['allowRawStatements'])) {
         throw $compiler->getNewCompilerException(new XenForo_Phrase('x_tags_only_used_where_full_statements_allowed', array('tag' => 'navigation')));
     }
     $rawStatement = $compiler->getNewRawStatement();
     $rawStatement->addStatement("\$__extraData['navigation'] = array();\n");
     foreach ($children as $child) {
         if ($compiler->isSegmentNamedTag($child, 'breadcrumb')) {
             if (isset($child['attributes']['source'])) {
                 $sourceVar = $compiler->compileVarRef($child['attributes']['source'], $options);
                 $rawStatement->addStatement('$__extraData[\'navigation\'] = XenForo_Template_Helper_Core::appendBreadCrumbs($__extraData[\'navigation\'], ' . $sourceVar . ");\n");
             } else {
                 $parts = array();
                 foreach ($child['attributes'] as $name => $value) {
                     $parts[] = "'" . $compiler->escapeSingleQuotedString($name) . "' => " . $compiler->compileAndCombineSegments($value, $options);
                 }
                 $parts[] = "'value' => " . $compiler->compileAndCombineSegments($child['children'], $options);
                 $rawStatement->addStatement('$__extraData[\'navigation\'][] = array(' . implode(', ', $parts) . ");\n");
             }
         } else {
             if (is_string($child) && trim($child) === '') {
                 // whitespace -- ignore it
             } else {
                 throw $compiler->getNewCompilerException(new XenForo_Phrase('invalid_data_found_in_navigation_tag'), $child);
             }
         }
     }
     return $rawStatement;
 }

 /**
  * Compile the var named in the first argument and return PHP code to access and urlencode it.
  *
  * @param XenForo_Template_Compiler The invoking compiler
  * @param string                 Name of the function called
  * @param array                  Arguments to the function (should have at least 1)
  * @param array                  Compilation options
  *
  * @return string
  */
 public function compile(XenForo_Template_Compiler $compiler, $function, array $arguments, array $options)
 {
     if (count($arguments) != 1) {
         throw $compiler->getNewCompilerArgumentException();
     }
     return 'urlencode(' . $compiler->compileAndCombineSegments($arguments[0], array_merge($options, array('varEscape' => false))) . ')';
 }

 /**
  * Compile the function and return PHP handle it.
  *
  * @param XenForo_Template_Compiler The invoking compiler
  * @param string                 Name of the function called
  * @param array                  Arguments to the function (should have at least 1)
  * @param array                  Compilation options
  *
  * @return string
  */
 public function compile(XenForo_Template_Compiler $compiler, $function, array $arguments, array $options)
 {
     if (count($arguments) != 1) {
         throw $compiler->getNewCompilerArgumentException();
     }
     return "XenForo_Template_Helper_Core::styleProperty(" . $compiler->compileAndCombineSegments($arguments[0], array_merge($options, array('varEscape' => false))) . ")";
 }

 public static function parse($raw)
 {
     $compiler = new XenForo_Template_Compiler(sprintf('<xen:if is="%s">%s</xen:if>', $raw, md5($raw)));
     $compiler->addFunctionHandler('helper', new WidgetFramework_Helper_Conditional_Function_Helper());
     $parsed = $compiler->lexAndParse();
     $compiler->setFollowExternal(false);
     $parsed = $compiler->compileParsed($parsed, __CLASS__, 0, 0);
     return $parsed;
 }

 protected function _renderTemplate($template, array $params = array())
 {
     extract($params);
     $compiler = new XenForo_Template_Compiler($template);
     XenForo_Application::disablePhpErrorHandler();
     @eval($compiler->compile());
     XenForo_Application::enablePhpErrorHandler();
     return htmlspecialchars_decode($__output, ENT_QUOTES);
 }

 /**
  * Compile the specified tag and return PHP code to handle it.
  *
  * @param XenForo_Template_Compiler The invoking compiler
  * @param string                 Name of the tag called
  * @param array                  Attributes for the tag (may be empty)
  * @param array                  Nodes (tags/curlies/text) within this tag (may be empty)
  * @param array                  Compilation options
  *
  * @return string
  */
 public function compile(XenForo_Template_Compiler $compiler, $tag, array $attributes, array $children, array $options)
 {
     if (!empty($attributes['user'])) {
         $user = $compiler->compileVarRef($attributes['user'], $options);
     } else {
         throw $compiler->getNewCompilerException(new XenForo_Phrase('missing_attribute_x_for_tag_y', array('attribute' => 'user', 'tag' => 'follow')));
     }
     return 'XenForo_Template_Helper_Core::followHtml(' . $user . ',' . $compiler->getNamedParamsAsPhpCode($attributes, $options, array('code')) . ')';
 }

 /**
  * Compile the specified tag and return PHP code to handle it.
  *
  * @param XenForo_Template_Compiler The invoking compiler
  * @param string                 Name of the tag called
  * @param array                  Attributes for the tag (may be empty)
  * @param array                  Nodes (tags/curlies/text) within this tag (may be empty)
  * @param array                  Compilation options
  *
  * @return string
  */
 public function compile(XenForo_Template_Compiler $compiler, $tag, array $attributes, array $children, array $options)
 {
     if (empty($options['allowRawStatements'])) {
         throw $compiler->getNewCompilerException(new XenForo_Phrase('x_tags_only_used_where_full_statements_allowed', array('tag' => 'title')));
     }
     $var = '__extraData[\'title\']';
     $childOutput = $compiler->compileIntoVariable($children, $var, $options, false);
     return $compiler->getNewRawStatement($childOutput);
 }

 /**
  * Compiles the function call.
  *
  * @param XenForo_Template_Compiler The invoking compiler
  * @param string                 Name of the function called
  * @param array                  Arguments to the function (should have at least 1)
  * @param array                  Compilation options
  *
  * @return string
  */
 public function compile(XenForo_Template_Compiler $compiler, $function, array $arguments, array $options)
 {
     $argc = count($arguments);
     if ($argc != 1) {
         throw $compiler->getNewCompilerArgumentException();
     }
     $condition = $compiler->parseConditionExpression($arguments[0], $options);
     $true = $function == 'checked' ? 'checked="checked"' : 'selected="selected"';
     return '(' . $condition . ' ? \' ' . $true . '\' : \'\')';
 }

 /**
  * Compile the specified tag and return PHP code to handle it.
  *
  * @param XenForo_Template_Compiler The invoking compiler
  * @param string                 Name of the tag called
  * @param array                  Attributes for the tag (may be empty)
  * @param array                  Nodes (tags/curlies/text) within this tag (may be empty)
  * @param array                  Compilation options
  *
  * @return string
  */
 public function compile(XenForo_Template_Compiler $compiler, $tag, array $attributes, array $children, array $options)
 {
     if (empty($options['allowRawStatements'])) {
         throw $compiler->getNewCompilerException(new XenForo_Phrase('x_tags_only_used_where_full_statements_allowed', array('tag' => 'require')));
     }
     $requirements = $compiler->getNamedAttributes($attributes, array('css', 'js'));
     if (!$requirements) {
         throw $compiler->getNewCompilerException(new XenForo_Phrase('require_tag_does_not_specify_any_known_types_css_or_js'));
     }
     if (isset($requirements['css'])) {
         $css = $requirements['css'];
         if (empty($css) || count($css) != 1 || !is_string($css[0])) {
             throw $compiler->getNewCompilerException(new XenForo_Phrase('only_literal_css_templates_may_be_included_by_require_tag'));
         }
         if (substr($css[0], -4) != '.css') {
             throw $compiler->getNewCompilerException(new XenForo_Phrase('all_required_css_templates_must_end_in_'));
         }
         $requirements['css'][0] = substr($css[0], 0, -4);
     }
     $statement = $compiler->getNewRawStatement();
     foreach ($requirements as $attribute => $value) {
         $statement->addStatement('$this->addRequiredExternal(\'' . $compiler->escapeSingleQuotedString($attribute) . '\', ' . $compiler->compileAndCombineSegments($value) . ");\n");
     }
     return $statement;
 }

 /**
  * Compile the specified tag and return PHP code to handle it.
  *
  * @param XenForo_Template_Compiler The invoking compiler
  * @param string                 Name of the tag called
  * @param array                  Attributes for the tag (may be empty)
  * @param array                  Nodes (tags/curlies/text) within this tag (may be empty)
  * @param array                  Compilation options
  *
  * @return string
  */
 public function compile(XenForo_Template_Compiler $compiler, $tag, array $attributes, array $children, array $options)
 {
     if (empty($options['allowRawStatements'])) {
         throw $compiler->getNewCompilerException(new XenForo_Phrase('x_tags_only_used_where_full_statements_allowed', array('tag' => 'description')));
     }
     $rawStatement = $compiler->getNewRawStatement();
     $rawStatement->addStatement("\$__extraData['pageDescription'] = " . $compiler->getNamedParamsAsPhpCode($attributes, $options, array('skipmeta')) . ";\n");
     $var = '__extraData[\'pageDescription\'][\'content\']';
     $rawStatement->addStatement($compiler->compileIntoVariable($children, $var, $options, false));
     return $rawStatement;
 }

 /**
  * Compiles the function call.
  *
  * @param XenForo_Template_Compiler The invoking compiler
  * @param string                 Name of the function called
  * @param array                  Arguments to the function (should have at least 1)
  * @param array                  Compilation options
  *
  * @return string
  */
 public function compile(XenForo_Template_Compiler $compiler, $function, array $arguments, array $options)
 {
     $argc = count($arguments);
     if ($argc != 1 && $argc != 2) {
         throw $compiler->getNewCompilerArgumentException();
     }
     if (empty($arguments[1])) {
         $arguments[1] = '0';
     }
     return 'XenForo_Template_Helper_Core::numberFormat(' . $compiler->compileAndCombineSegments($arguments[0], array_merge($options, array('varEscape' => false))) . ', ' . $compiler->compileAndCombineSegments($arguments[1], array_merge($options, array('varEscape' => false))) . ')';
 }

 /**
  * Compile the specified tag and return PHP code to handle it.
  *
  * @param XenForo_Template_Compiler The invoking compiler
  * @param string                 Name of the tag called
  * @param array                  Attributes for the tag (may be empty)
  * @param array                  Nodes (tags/curlies/text) within this tag (may be empty)
  * @param array                  Compilation options
  *
  * @return string
  */
 public function compile(XenForo_Template_Compiler $compiler, $tag, array $attributes, array $children, array $options)
 {
     if (!empty($attributes['time'])) {
         $time = $compiler->compileVarRef($attributes['time'], $options);
     } else {
         if (!empty($children)) {
             $time = $compiler->compileAndCombineSegments($children, $options);
         } else {
             throw $compiler->getNewCompilerException(new XenForo_Phrase('missing_attribute_x_for_tag_y', array('attribute' => 'time', 'tag' => 'datetime')));
         }
     }
     return 'XenForo_Template_Helper_Core::callHelper(\'datetimehtml\', array(' . $time . ',' . $compiler->getNamedParamsAsPhpCode($attributes, $options, array('code')) . '))';
 }

 /**
  * Compile the var named in the first argument and return PHP code to access and escape it.
  *
  * @param XenForo_Template_Compiler The invoking compiler
  * @param string                 Name of the function called
  * @param array                  Arguments to the function (should have at least 1)
  * @param array                  Compilation options
  *
  * @return string
  */
 public function compile(XenForo_Template_Compiler $compiler, $function, array $arguments, array $options)
 {
     if (count($arguments) < 1) {
         throw $compiler->getNewCompilerArgumentException();
     }
     $compileOptions = array_merge($options, array('varEscape' => false));
     if (!empty($arguments[1])) {
         $doubleEncode = $compiler->parseConditionExpression($arguments[1], $options);
     } else {
         $doubleEncode = 'true';
     }
     return 'htmlspecialchars(' . $compiler->compileAndCombineSegments($arguments[0], $compileOptions) . ', ENT_QUOTES, \'UTF-8\', ' . $doubleEncode . ')';
 }

 /**
  * Compile the var named in the first argument and return PHP code to access it raw.
  *
  * @param XenForo_Template_Compiler The invoking compiler
  * @param string                 Name of the function called
  * @param array                  Arguments to the function (should have at least 1)
  * @param array                  Compilation options
  *
  * @return string
  */
 public function compile(XenForo_Template_Compiler $compiler, $function, array $arguments, array $options)
 {
     if (count($arguments) > 2) {
         throw $compiler->getNewCompilerArgumentException();
     }
     $compileOptions = array_merge($options, array('varEscape' => false));
     $raw = $compiler->compileVarRef($arguments[0], $options);
     if (empty($arguments[1])) {
         return $raw;
     } else {
         return 'XenForo_Template_Helper_Core::rawCondition(' . $raw . ', ' . $compiler->compileAndCombineSegments($arguments[1], $compileOptions) . ')';
     }
 }

 /**
  * Compile the specified tag and return PHP code to handle it.
  *
  * @param XenForo_Template_Compiler The invoking compiler
  * @param string                 Name of the tag called
  * @param array                  Attributes for the tag (may be empty)
  * @param array                  Nodes (tags/curlies/text) within this tag (may be empty)
  * @param array                  Compilation options
  *
  * @return string
  */
 public function compile(XenForo_Template_Compiler $compiler, $tag, array $attributes, array $children, array $options)
 {
     if (empty($options['allowRawStatements'])) {
         throw $compiler->getNewCompilerException(new XenForo_Phrase('x_tags_only_used_where_full_statements_allowed', array('tag' => 'set')));
     }
     if (empty($attributes['var'])) {
         throw $compiler->getNewCompilerException(new XenForo_Phrase('missing_attribute_x_for_tag_y', array('attribute' => 'var', 'tag' => 'set')));
     }
     $var = $compiler->compileVarRef($attributes['var'], array_merge($options, array('disableVarMap' => true)));
     $var = substr($var, 1);
     // need to take off leading $
     if (empty($children)) {
         $children = null;
     }
     if (!empty($attributes['value'])) {
         if ($children) {
             throw $compiler->getNewCompilerException(new XenForo_Phrase('tag_contained_children_and_value_attribute'));
         }
         $value = $compiler->compileAndCombineSegments($attributes['value'], array_merge($options, array('varEscape' => false)));
         $childOutput = '$' . $var . ' = ' . $value . ";\n";
     } else {
         $childOutput = $compiler->compileIntoVariable($children, $var, $options, false);
     }
     $statement = $compiler->getNewRawStatement();
     $statement->addStatement($childOutput);
     return $statement;
 }

 /**
  * Compile the var named in the first argument and return PHP code to access and escape it.
  *
  * @param XenForo_Template_Compiler The invoking compiler
  * @param string                 Name of the function called
  * @param array                  Arguments to the function (should have at least 1)
  * @param array                  Compilation options
  *
  * @return string
  */
 public function compile(XenForo_Template_Compiler $compiler, $function, array $arguments, array $options)
 {
     if (count($arguments) < 1) {
         throw $compiler->getNewCompilerArgumentException();
     }
     $compileOptions = array_merge($options, array('varEscape' => false));
     if (!empty($arguments[1])) {
         $doubleEncode = $compiler->parseConditionExpression($arguments[1], $options);
     } else {
         $doubleEncode = 'true';
     }
     // note: ISO-8859-1 is fine since we use UTF-8 and are only replacing basic chars
     return 'htmlspecialchars(' . $compiler->compileAndCombineSegments($arguments[0], $compileOptions) . ', ENT_COMPAT, \'ISO-8859-1\', ' . $doubleEncode . ')';
 }