diff --git a/scripts/phutil_symbols.php b/scripts/phutil_symbols.php
index b27e0fd..296c364 100755
--- a/scripts/phutil_symbols.php
+++ b/scripts/phutil_symbols.php
@@ -1,564 +1,565 @@
 #!/usr/bin/env php
 <?php
 
 // We have to do this first before we load any symbols, because we define the
 // built-in symbol list through introspection.
 $builtins = phutil_symbols_get_builtins();
 
 require_once dirname(__FILE__).'/__init_script__.php';
 
 $args = new PhutilArgumentParser($argv);
 $args->setTagline(pht('identify symbols in a PHP source file'));
 $args->setSynopsis(<<<EOHELP
     **phutil_symbols.php** [__options__] __path.php__
         Identify the symbols (clases, functions and interfaces) in a PHP
         source file. Symbols are divided into "have" symbols (symbols the file
         declares) and "need" symbols (symbols the file depends on). For example,
         class declarations are "have" symbols, while object instantiations
         with "new X()" are "need" symbols.
 
         Dependencies on builtins and symbols marked '@phutil-external-symbol'
         in docblocks are omitted without __--all__.
 
         Symbols are reported in JSON on stdout.
 
         This script is used internally by libphutil/arcanist to build maps of
         library symbols.
 
         It would be nice to eventually implement this as a C++ xhpast binary,
         as it's relatively stable and performance is currently awful
         (500ms+ for moderately large files).
 
 EOHELP
 );
 $args->parseStandardArguments();
 $args->parse(
   array(
     array(
       'name'      => 'all',
       'help'      => pht(
         'Report all symbols, including built-ins and declared externals.'),
     ),
     array(
       'name'      => 'ugly',
       'help'      => pht('Do not prettify JSON output.'),
     ),
     array(
       'name'      => 'path',
       'wildcard'  => true,
       'help'      => pht('PHP Source file to analyze.'),
     ),
   ));
 
 $paths = $args->getArg('path');
 if (count($paths) !== 1) {
   throw new Exception(pht('Specify exactly one path!'));
 }
 $path = Filesystem::resolvePath(head($paths));
 
 $show_all = $args->getArg('all');
 
 $source_code = Filesystem::readFile($path);
 
 try {
   $tree = XHPASTTree::newFromData($source_code);
 } catch (XHPASTSyntaxErrorException $ex) {
   $result = array(
     'error' => $ex->getMessage(),
     'line'  => $ex->getErrorLine(),
     'file'  => $path,
   );
   $json = new PhutilJSON();
   echo $json->encodeFormatted($result);
   exit(0);
 }
 
 $root = $tree->getRootNode();
 $root->buildSelectCache();
 
 // -(  Unsupported Constructs  )------------------------------------------------
 
 $namespaces = $root->selectDescendantsOfType('n_NAMESPACE');
 foreach ($namespaces as $namespace) {
   phutil_fail_on_unsupported_feature($namespace, $path, pht('namespaces'));
 }
 
 $uses = $root->selectDescendantsOfType('n_USE');
 foreach ($namespaces as $namespace) {
   phutil_fail_on_unsupported_feature(
     $namespace, $path, pht('namespace `%s` statements', 'use'));
 }
 
 $possible_traits = $root->selectDescendantsOfType('n_CLASS_DECLARATION');
 foreach ($possible_traits as $possible_trait) {
   $attributes = $possible_trait->getChildByIndex(0);
   // Can't use getChildByIndex here because not all classes have attributes
   foreach ($attributes->getChildren() as $attribute) {
     if (strtolower($attribute->getConcreteString()) === 'trait') {
       phutil_fail_on_unsupported_feature($possible_trait, $path, pht('traits'));
     }
   }
 }
 
 
 // -(  Marked Externals  )------------------------------------------------------
 
 
 // Identify symbols marked with "@phutil-external-symbol", so we exclude them
 // from the dependency list.
 
 $externals = array();
 $doc_parser = new PhutilDocblockParser();
 foreach ($root->getTokens() as $token) {
   if ($token->getTypeName() === 'T_DOC_COMMENT') {
     list($block, $special) = $doc_parser->parse($token->getValue());
 
     $ext_list = idx($special, 'phutil-external-symbol');
     $ext_list = (array)$ext_list;
     $ext_list = array_filter($ext_list);
 
     foreach ($ext_list as $ext_ref) {
       $matches = null;
       if (preg_match('/^\s*(\S+)\s+(\S+)/', $ext_ref, $matches)) {
         $externals[$matches[1]][$matches[2]] = true;
       }
     }
   }
 }
 
 
 // -(  Declarations and Dependencies  )-----------------------------------------
 
 
 // The first stage of analysis is to find all the symbols we declare in the
 // file (like functions and classes) and all the symbols we use in the file
 // (like calling functions and invoking classes). Later, we filter this list
 // to exclude builtins.
 
 
 $have = array();  // For symbols we declare.
 $need = array();  // For symbols we use.
 $xmap = array();  // For extended classes and implemented interfaces.
 
 
 // -(  Functions  )-------------------------------------------------------------
 
 
 // Find functions declared in this file.
 
 // This is "function f() { ... }".
 $functions = $root->selectDescendantsOfType('n_FUNCTION_DECLARATION');
 foreach ($functions as $function) {
   $name = $function->getChildByIndex(2);
   if ($name->getTypeName() === 'n_EMPTY') {
     // This is an anonymous function; don't record it into the symbol
     // index.
     continue;
   }
   $have[] = array(
     'type'    => 'function',
     'symbol'  => $name,
   );
 }
 
 
 // Find functions used by this file. Uses:
 //
 //  - Explicit Call
 //  - String literal passed to call_user_func() or call_user_func_array()
 //  - String literal in array literal in call_user_func()/call_user_func_array()
 //
 // TODO: Possibly support these:
 //
 //  - String literal in ReflectionFunction().
 
 // This is "f();".
 $calls = $root->selectDescendantsOfType('n_FUNCTION_CALL');
 foreach ($calls as $call) {
   $name = $call->getChildByIndex(0);
   if ($name->getTypeName() === 'n_VARIABLE' ||
       $name->getTypeName() === 'n_VARIABLE_VARIABLE') {
     // Ignore these, we can't analyze them.
     continue;
   }
   if ($name->getTypeName() === 'n_CLASS_STATIC_ACCESS') {
     // These are "C::f()", we'll pick this up later on.
     continue;
   }
   $call_name = $name->getConcreteString();
   if ($call_name === 'call_user_func' ||
       $call_name === 'call_user_func_array') {
     $params = $call->getChildByIndex(1)->getChildren();
     if (!count($params)) {
       // This is a bare call_user_func() with no arguments; just ignore it.
       continue;
     }
     $symbol = array_shift($params);
     $type = 'function';
     $symbol_value = $symbol->getStringLiteralValue();
     $pos = strpos($symbol_value, '::');
     if ($pos) {
       $type = 'class';
       $symbol_value = substr($symbol_value, 0, $pos);
     } else if ($symbol->getTypeName() === 'n_ARRAY_LITERAL') {
       try {
         $type = 'class';
         $symbol_value = idx($symbol->evalStatic(), 0);
       } catch (Exception $ex) {}
     }
     if ($symbol_value && strpos($symbol_value, '$') === false) {
       $need[] = array(
         'type'    => $type,
         'name'    => $symbol_value,
         'symbol'  => $symbol,
       );
     }
   } else {
     $need[] = array(
       'type'    => 'function',
       'symbol'  => $name,
     );
   }
 }
 
 
 // -(  Classes  )---------------------------------------------------------------
 
 
 // Find classes declared by this file.
 
 
 // This is "class X ... { ... }".
 $classes = $root->selectDescendantsOfType('n_CLASS_DECLARATION');
 foreach ($classes as $class) {
   $class_name = $class->getChildByIndex(1);
   $have[] = array(
     'type'    => 'class',
     'symbol'  => $class_name,
   );
 }
 
 
 // Find classes used by this file. We identify these:
 //
 //  - class ... extends X
 //  - new X
 //  - Static method call
 //  - Static property access
 //  - Use of class constant
 //  - typehints
 //  - catch
 //  - instanceof
 //  - newv()
 //
 // TODO: Possibly support these:
 //
 //  - String literal in ReflectionClass().
 
 
 // This is "class X ... { ... }".
 $classes = $root->selectDescendantsOfType('n_CLASS_DECLARATION');
 foreach ($classes as $class) {
   $class_name = $class->getChildByIndex(1)->getConcreteString();
   $extends = $class->getChildByIndex(2);
   foreach ($extends->selectDescendantsOfType('n_CLASS_NAME') as $parent) {
     $need[] = array(
       'type'    => 'class',
       'symbol'  => $parent,
     );
 
     // Track all 'extends' in the extension map.
     $xmap[$class_name][] = $parent->getConcreteString();
   }
 }
 
 // This is "new X()".
 $uses_of_new = $root->selectDescendantsOfType('n_NEW');
 foreach ($uses_of_new as $new_operator) {
   $name = $new_operator->getChildByIndex(0);
   if ($name->getTypeName() === 'n_VARIABLE' ||
       $name->getTypeName() === 'n_VARIABLE_VARIABLE') {
     continue;
   }
   $need[] = array(
     'type'    => 'class',
     'symbol'  => $name,
   );
 }
 
 // This covers all of "X::$y", "X::y()" and "X::CONST".
 $static_uses = $root->selectDescendantsOfType('n_CLASS_STATIC_ACCESS');
 foreach ($static_uses as $static_use) {
   $name = $static_use->getChildByIndex(0);
   if ($name->getTypeName() !== 'n_CLASS_NAME') {
     continue;
   }
   $need[] = array(
     'type'    => 'class',
     'symbol'  => $name,
   );
 }
 
 // This is "function (X $x)".
 $parameters = $root->selectDescendantsOfType('n_DECLARATION_PARAMETER');
 foreach ($parameters as $parameter) {
   $hint = $parameter->getChildByIndex(0);
   if ($hint->getTypeName() !== 'n_CLASS_NAME') {
     continue;
   }
   $need[] = array(
     'type'    => 'class/interface',
     'symbol'  => $hint,
   );
 }
 
 // This is "catch (Exception $ex)".
 $catches = $root->selectDescendantsOfType('n_CATCH');
 foreach ($catches as $catch) {
   $need[] = array(
     'type'    => 'class/interface',
     'symbol'  => $catch->getChildOfType(0, 'n_CLASS_NAME'),
   );
 }
 
 // This is "$x instanceof X".
 $instanceofs = $root->selectDescendantsOfType('n_BINARY_EXPRESSION');
 foreach ($instanceofs as $instanceof) {
   $operator = $instanceof->getChildOfType(1, 'n_OPERATOR');
   if ($operator->getConcreteString() !== 'instanceof') {
     continue;
   }
   $class = $instanceof->getChildByIndex(2);
   if ($class->getTypeName() !== 'n_CLASS_NAME') {
     continue;
   }
   $need[] = array(
     'type'    => 'class/interface',
     'symbol'  => $class,
   );
 }
 
 // This is "newv('X')".
 $calls = $root->selectDescendantsOfType('n_FUNCTION_CALL');
 foreach ($calls as $call) {
   $call_name = $call->getChildByIndex(0)->getConcreteString();
   if ($call_name !== 'newv') {
     continue;
   }
   $params = $call->getChildByIndex(1)->getChildren();
   if (!count($params)) {
     continue;
   }
   $symbol = reset($params);
   $symbol_value = $symbol->getStringLiteralValue();
   if ($symbol_value && strpos($symbol_value, '$') === false) {
     $need[] = array(
       'type'    => 'class',
       'name'    => $symbol_value,
       'symbol'  => $symbol,
     );
   }
 }
 
 
 // -(  Interfaces  )------------------------------------------------------------
 
 
 // Find interfaces declared in this file.
 
 
 // This is "interface X .. { ... }".
 $interfaces = $root->selectDescendantsOfType('n_INTERFACE_DECLARATION');
 foreach ($interfaces as $interface) {
   $interface_name = $interface->getChildByIndex(1);
   $have[] = array(
     'type'    => 'interface',
     'symbol'  => $interface_name,
   );
 }
 
 
 // Find interfaces used by this file. We identify these:
 //
 //  - class ... implements X
 //  - interface ... extends X
 
 
 // This is "class X ... { ... }".
 $classes = $root->selectDescendantsOfType('n_CLASS_DECLARATION');
 foreach ($classes as $class) {
   $class_name = $class->getChildByIndex(1)->getConcreteString();
   $implements = $class->getChildByIndex(3);
   $interfaces = $implements->selectDescendantsOfType('n_CLASS_NAME');
   foreach ($interfaces as $interface) {
     $need[] = array(
       'type'    => 'interface',
       'symbol'  => $interface,
     );
 
     // Track 'class ... implements' in the extension map.
     $xmap[$class_name][] = $interface->getConcreteString();
   }
 }
 
 
 // This is "interface X ... { ... }".
 $interfaces = $root->selectDescendantsOfType('n_INTERFACE_DECLARATION');
 foreach ($interfaces as $interface) {
   $interface_name = $interface->getChildByIndex(1)->getConcreteString();
 
   $extends = $interface->getChildByIndex(2);
   foreach ($extends->selectDescendantsOfType('n_CLASS_NAME') as $parent) {
     $need[] = array(
       'type'    => 'interface',
       'symbol'  => $parent,
     );
 
     // Track 'interface ... extends' in the extension map.
     $xmap[$interface_name][] = $parent->getConcreteString();
   }
 }
 
 
 // -(  Analysis  )--------------------------------------------------------------
 
 
 $declared_symbols = array();
 foreach ($have as $key => $spec) {
   $name = $spec['symbol']->getConcreteString();
   $declared_symbols[$spec['type']][$name] = $spec['symbol']->getOffset();
 }
 
 $required_symbols = array();
 foreach ($need as $key => $spec) {
   $name = idx($spec, 'name');
   if (!$name) {
     $name = $spec['symbol']->getConcreteString();
   }
 
   $type = $spec['type'];
   foreach (explode('/', $type) as $libtype) {
     if (!$show_all) {
       if (!empty($externals[$libtype][$name])) {
         // Ignore symbols declared as externals.
         continue 2;
       }
       if (!empty($builtins[$libtype][$name])) {
         // Ignore symbols declared as builtins.
         continue 2;
       }
     }
     if (!empty($declared_symbols[$libtype][$name])) {
       // We declare this symbol, so don't treat it as a requirement.
       continue 2;
     }
   }
   if (!empty($required_symbols[$type][$name])) {
     // Report only the first use of a symbol, since reporting all of them
     // isn't terribly informative.
     continue;
   }
   $required_symbols[$type][$name] = $spec['symbol']->getOffset();
 }
 
 $result = array(
   'have'  => $declared_symbols,
   'need'  => $required_symbols,
   'xmap'  => $xmap,
 );
 
 
 // -(  Output  )----------------------------------------------------------------
 
 
 if ($args->getArg('ugly')) {
   echo json_encode($result);
 } else {
   $json = new PhutilJSON();
   echo $json->encodeFormatted($result);
 }
 
 
 // -(  Library  )---------------------------------------------------------------
 
 function phutil_fail_on_unsupported_feature(XHPASTNode $node, $file, $what) {
   $line = $node->getLineNumber();
   $message = phutil_console_wrap(
     pht(
       '`%s` has limited support for features introduced after PHP 5.2.3. '.
       'This library uses an unsupported feature (%s) on line %d of %s.',
       'arc liberate',
       $what,
       $line,
       Filesystem::readablePath($file)));
 
   $result = array(
     'error' => $message,
     'line'  => $line,
     'file'  => $file,
   );
   $json = new PhutilJSON();
   echo $json->encodeFormatted($result);
   exit(0);
 }
 
 function phutil_symbols_get_builtins() {
   $builtin = array();
   $builtin['classes']    = get_declared_classes();
   $builtin['interfaces'] = get_declared_interfaces();
 
   $funcs = get_defined_functions();
   $builtin['functions']  = $funcs['internal'];
 
   $compat = json_decode(
     file_get_contents(
       dirname(__FILE__).'/../resources/php_compat_info.json'),
     true);
 
   foreach (array('functions', 'classes', 'interfaces') as $type) {
     // Developers may not have every extension that a library potentially uses
     // installed. We supplement the list of declared functions and classes with
     // a list of known extension functions to avoid raising false positives just
     // because you don't have pcntl, etc.
     $extensions = array_keys($compat[$type]);
     $builtin[$type] = array_merge($builtin[$type], $extensions);
   }
 
   return array(
     'class'     => array_fill_keys($builtin['classes'], true) + array(
       'static' => true,
       'parent' => true,
       'self'   => true,
 
       'PhutilBootloader' => true,
 
       // PHP7 defines these new parent classes of "Exception", but they do not
       // exist prior to PHP7. It's possible to use them safely in PHP5, in
       // some cases, to write code which is compatible with either PHP5 or
       // PHP7, but it s hard for us tell if a particular use is safe or not.
       // For now, assume users know what they're doing and that uses are safe.
       // For discussion, see T12855.
       'Throwable' => true,
       'Error' => true,
+      'ParseError' => true,
     ),
     'function'  => array_filter(
       array(
         'empty' => true,
         'isset' => true,
         'die'   => true,
 
         // These are provided by libphutil but not visible in the map.
 
         'phutil_is_windows'   => true,
         'phutil_load_library' => true,
         'phutil_is_hiphop_runtime' => true,
 
         // HPHP/i defines these functions as 'internal', but they are NOT
         // builtins and do not exist in vanilla PHP. Make sure we don't mark
         // them as builtin since we need to add dependencies for them.
         'idx'   => false,
         'id'    => false,
       ) + array_fill_keys($builtin['functions'], true)),
     'interface' => array_fill_keys($builtin['interfaces'], true),
   );
 }
diff --git a/src/markup/__tests__/PhutilMarkupTestCase.php b/src/markup/__tests__/PhutilMarkupTestCase.php
index df6620b..50dde40 100644
--- a/src/markup/__tests__/PhutilMarkupTestCase.php
+++ b/src/markup/__tests__/PhutilMarkupTestCase.php
@@ -1,274 +1,283 @@
 <?php
 
 final class PhutilMarkupTestCase extends PhutilTestCase {
 
   public function testTagDefaults() {
     $this->assertEqual(
       (string)phutil_tag('br'),
       (string)phutil_tag('br', array()));
 
     $this->assertEqual(
       (string)phutil_tag('br', array()),
       (string)phutil_tag('br', array(), null));
   }
 
   public function testTagEmpty() {
     $this->assertEqual(
       '<br />',
       (string)phutil_tag('br', array(), null));
 
     $this->assertEqual(
       '<div></div>',
       (string)phutil_tag('div', array(), null));
 
     $this->assertEqual(
       '<div></div>',
       (string)phutil_tag('div', array(), ''));
   }
 
   public function testTagBasics() {
     $this->assertEqual(
       '<br />',
       (string)phutil_tag('br'));
 
     $this->assertEqual(
       '<div>y</div>',
       (string)phutil_tag('div', array(), 'y'));
   }
 
   public function testTagAttributes() {
     $this->assertEqual(
       '<div u="v">y</div>',
       (string)phutil_tag('div', array('u' => 'v'), 'y'));
 
     $this->assertEqual(
       '<br u="v" />',
       (string)phutil_tag('br', array('u' => 'v')));
   }
 
   public function testTagEscapes() {
     $this->assertEqual(
       '<br u="&lt;" />',
       (string)phutil_tag('br', array('u' => '<')));
 
     $this->assertEqual(
       '<div><br /></div>',
       (string)phutil_tag('div', array(), phutil_tag('br')));
   }
 
   public function testTagNullAttribute() {
     $this->assertEqual(
       '<br />',
       (string)phutil_tag('br', array('y' => null)));
   }
 
   public function testDefaultRelNoreferrer() {
     $map = array(
       // These should not have rel="nofollow" inserted implicitly.
       '/' => false,
       '/path/to/local.html' => false,
       '#example' => false,
       '' => false,
 
       // These should get the implicit insertion.
       'http://www.example.org/' => true,
-      '///evil.com/' => true,
       '  http://www.example.org/' => true,
       'ftp://filez.com' => true,
       'mailto:santa@northpole.com' => true,
       'tel:18005555555' => true,
+
+      // These are protocol-relative hrefs. Browers will treat a URI with
+      // a leading slash followed by any positive number of slashes and
+      // backslashes as a protocol-relative link.
+      '//evil.com/' => true,
+      '/\\evil.com/' => true,
+      '///evil.com/' => true,
+      '//\\evil.com/' => true,
+      '/\\/evil.com/' => true,
+      '/\\\\/evil.com' => true,
     );
 
     foreach ($map as $input => $expect) {
       $tag = phutil_tag(
         'a',
         array(
           'href' => $input,
         ),
         'link');
       $tag = (string)$tag;
       $this->assertEqual($expect, (bool)preg_match('/noreferrer/', $tag));
     }
 
     // With an explicit `rel` present, we should not override it.
     $tag = phutil_tag(
       'a',
       array(
         'href' => 'http://www.example.org/',
         'rel' => 'nofollow',
       ),
       'link');
 
     $this->assertFalse((bool)preg_match('/noreferrer/', (string)$tag));
 
     // For tags other than `a`, we should not insert `rel`.
     $tag = phutil_tag(
       'link',
       array(
         'href' => 'http://www.example.org/',
       ),
       'link');
 
     $this->assertFalse((bool)preg_match('/noreferrer/', (string)$tag));
   }
 
 
   public function testTagJavascriptProtocolRejection() {
     $hrefs = array(
       'javascript:alert(1)'         => true,
       'JAVASCRIPT:alert(2)'         => true,
 
       // NOTE: When interpreted as a URI, this is dropped because of leading
       // whitespace.
       '     javascript:alert(3)'    => array(true, false),
       '/'                           => false,
       '/path/to/stuff/'             => false,
       ''                            => false,
       'http://example.com/'         => false,
       '#'                           => false,
       'javascript://anything'       => true,
 
       // Chrome 33 and IE11, at a minimum, treat this as Javascript.
       "javascript\n:alert(4)"       => true,
 
       // Opera currently accepts a variety of unicode spaces. This test case
       // has a smattering of them.
       "\xE2\x80\x89javascript:"     => true,
       "javascript\xE2\x80\x89:"     => true,
       "\xE2\x80\x84javascript:"     => true,
       "javascript\xE2\x80\x84:"     => true,
 
       // Because we're aggressive, all of unicode should trigger detection
       // by default.
       "\xE2\x98\x83javascript:"     => true,
       "javascript\xE2\x98\x83:"     => true,
       "\xE2\x98\x83javascript\xE2\x98\x83:" => true,
 
       // We're aggressive about this, so we'll intentionally raise false
       // positives in these cases.
       'javascript~:alert(5)'        => true,
       '!!!javascript!!!!:alert(6)'  => true,
 
       // However, we should raise true negatives in these slightly more
       // reasonable cases.
       'javascript/:docs.html'       => false,
       'javascripts:x.png'           => false,
       'COOLjavascript:page'         => false,
       '/javascript:alert(1)'        => false,
     );
 
     foreach (array(true, false) as $use_uri) {
       foreach ($hrefs as $href => $expect) {
         if (is_array($expect)) {
           $expect = ($use_uri ? $expect[1] : $expect[0]);
         }
 
         if ($use_uri) {
           $href_value = new PhutilURI($href);
         } else {
           $href_value = $href;
         }
 
         $caught = null;
         try {
           phutil_tag('a', array('href' => $href_value), 'click for candy');
         } catch (Exception $ex) {
           $caught = $ex;
         }
 
         $desc = pht(
           'Unexpected result for "%s". <uri = %s, expect exception = %s>',
           $href,
           $use_uri ? pht('Yes') : pht('No'),
           $expect ? pht('Yes') : pht('No'));
 
         $this->assertEqual(
           $expect,
           $caught instanceof Exception,
           $desc);
       }
     }
   }
 
   public function testURIEscape() {
     $this->assertEqual(
       '%2B/%20%3F%23%26%3A%21xyz%25',
       phutil_escape_uri('+/ ?#&:!xyz%'));
   }
 
   public function testURIPathComponentEscape() {
     $this->assertEqual(
       'a%252Fb',
       phutil_escape_uri_path_component('a/b'));
 
     $str = '';
     for ($ii = 0; $ii <= 255; $ii++) {
       $str .= chr($ii);
     }
 
     $this->assertEqual(
       $str,
       phutil_unescape_uri_path_component(
         rawurldecode( // Simulates webserver.
           phutil_escape_uri_path_component($str))));
   }
 
   public function testHsprintf() {
     $this->assertEqual(
       '<div>&lt;3</div>',
       (string)hsprintf('<div>%s</div>', '<3'));
   }
 
   public function testAppendHTML() {
     $html = phutil_tag('hr');
     $html->appendHTML(phutil_tag('br'), '<evil>');
     $this->assertEqual('<hr /><br />&lt;evil&gt;', $html->getHTMLContent());
   }
 
   public function testArrayEscaping() {
     $this->assertEqual(
       '<div>&lt;div&gt;</div>',
       phutil_escape_html(
         array(
           hsprintf('<div>'),
           array(
             array(
               '<',
               array(
                 'd',
                 array(
                   array(
                     hsprintf('i'),
                   ),
                   'v',
                 ),
               ),
               array(
                 array(
                   '>',
                 ),
               ),
             ),
           ),
           hsprintf('</div>'),
         )));
 
     $this->assertEqual(
       '<div><br /><hr /><wbr /></div>',
       phutil_tag(
         'div',
         array(),
         array(
           array(
             array(
               phutil_tag('br'),
               array(
                 phutil_tag('hr'),
               ),
               phutil_tag('wbr'),
             ),
           ),
         ))->getHTMLContent());
   }
 
 }
diff --git a/src/markup/render.php b/src/markup/render.php
index b3f20ca..14c6f6e 100644
--- a/src/markup/render.php
+++ b/src/markup/render.php
@@ -1,273 +1,278 @@
 <?php
 
 /**
  * Render an HTML tag in a way that treats user content as unsafe by default.
  *
  * Tag rendering has some special logic which implements security features:
  *
  *   - When rendering `<a>` tags, if the `rel` attribute is not specified, it
  *     is interpreted as `rel="noreferrer"`.
  *   - When rendering `<a>` tags, the `href` attribute may not begin with
  *     `javascript:`.
  *
  * These special cases can not be disabled.
  *
  * IMPORTANT: The `$tag` attribute and the keys of the `$attributes` array are
  * trusted blindly, and not escaped. You should not pass user data in these
  * parameters.
  *
  * @param string The name of the tag, like `a` or `div`.
  * @param map<string, string> A map of tag attributes.
  * @param wild Content to put in the tag.
  * @return PhutilSafeHTML Tag object.
  */
 function phutil_tag($tag, array $attributes = array(), $content = null) {
   // If the `href` attribute is present:
   //   - make sure it is not a "javascript:" URI. We never permit these.
   //   - if the tag is an `<a>` and the link is to some foreign resource,
   //     add `rel="nofollow"` by default.
   if (!empty($attributes['href'])) {
 
     // This might be a URI object, so cast it to a string.
     $href = (string)$attributes['href'];
 
     if (isset($href[0])) {
       $is_anchor_href = ($href[0] == '#');
 
       // Is this a link to a resource on the same domain? The second part of
-      // this excludes "///evil.com/" protocol-relative hrefs.
-      $is_domain_href = ($href[0] == '/') &&
-                        (!isset($href[1]) || $href[1] != '/');
+      // this excludes "//evil.com/" protocol-relative hrefs. The third part
+      // of this excludes "/\evil.com/" protocol-relative fantasy hrefs which
+      // are completely made up but which browsers all respect. Broadly,
+      // browsers will dutifuly treat "/" followed by ANY sequence of "/" and
+      // "\" as though it were "//".
+      $is_domain_href =
+        ($href[0] == '/') &&
+        (!isset($href[1]) || ($href[1] != '/' && $href[1] != '\\'));
 
       // If the `rel` attribute is not specified, fill in `rel="noreferrer"`.
       // Effectively, this serves to make the default behavior for offsite
       // links "do not send a  referrer", which is broadly desirable. Specifying
       // some non-null `rel` will skip this.
       if (!isset($attributes['rel'])) {
         if (!$is_anchor_href && !$is_domain_href) {
           if ($tag == 'a') {
             $attributes['rel'] = 'noreferrer';
           }
         }
       }
 
       // Block 'javascript:' hrefs at the tag level: no well-designed
       // application should ever use them, and they are a potent attack vector.
 
       // This function is deep in the core and performance sensitive, so we're
       // doing a cheap version of this test first to avoid calling preg_match()
       // on URIs which begin with '/' or `#`. These cover essentially all URIs
       // in Phabricator.
       if (!$is_anchor_href && !$is_domain_href) {
         // Chrome 33 and IE 11 both interpret "javascript\n:" as a Javascript
         // URI, and all browsers interpret "  javascript:" as a Javascript URI,
         // so be aggressive about looking for "javascript:" in the initial
         // section of the string.
 
         $normalized_href = preg_replace('([^a-z0-9/:]+)i', '', $href);
         if (preg_match('/^javascript:/i', $normalized_href)) {
           throw new Exception(
             pht(
               "Attempting to render a tag with an '%s' attribute that begins ".
               "with '%s'. This is either a serious security concern or a ".
               "serious architecture concern. Seek urgent remedy.",
               'href',
               'javascript:'));
         }
       }
     }
   }
 
   // For tags which can't self-close, treat null as the empty string -- for
   // example, always render `<div></div>`, never `<div />`.
   static $self_closing_tags = array(
     'area'    => true,
     'base'    => true,
     'br'      => true,
     'col'     => true,
     'command' => true,
     'embed'   => true,
     'frame'   => true,
     'hr'      => true,
     'img'     => true,
     'input'   => true,
     'keygen'  => true,
     'link'    => true,
     'meta'    => true,
     'param'   => true,
     'source'  => true,
     'track'   => true,
     'wbr'     => true,
   );
 
   $attr_string = '';
   foreach ($attributes as $k => $v) {
     if ($v === null) {
       continue;
     }
     $v = phutil_escape_html($v);
     $attr_string .= ' '.$k.'="'.$v.'"';
   }
 
   if ($content === null) {
     if (isset($self_closing_tags[$tag])) {
       return new PhutilSafeHTML('<'.$tag.$attr_string.' />');
     } else {
       $content = '';
     }
   } else {
     $content = phutil_escape_html($content);
   }
 
   return new PhutilSafeHTML('<'.$tag.$attr_string.'>'.$content.'</'.$tag.'>');
 }
 
 function phutil_tag_div($class, $content = null) {
   return phutil_tag('div', array('class' => $class), $content);
 }
 
 function phutil_escape_html($string) {
   if ($string instanceof PhutilSafeHTML) {
     return $string;
   } else if ($string instanceof PhutilSafeHTMLProducerInterface) {
     $result = $string->producePhutilSafeHTML();
     if ($result instanceof PhutilSafeHTML) {
       return phutil_escape_html($result);
     } else if (is_array($result)) {
       return phutil_escape_html($result);
     } else if ($result instanceof PhutilSafeHTMLProducerInterface) {
       return phutil_escape_html($result);
     } else {
       try {
         assert_stringlike($result);
         return phutil_escape_html((string)$result);
       } catch (Exception $ex) {
         throw new Exception(
           pht(
             "Object (of class '%s') implements %s but did not return anything ".
             "renderable from %s.",
             get_class($string),
             'PhutilSafeHTMLProducerInterface',
             'producePhutilSafeHTML()'));
       }
     }
   } else if (is_array($string)) {
     $result = '';
     foreach ($string as $item) {
       $result .= phutil_escape_html($item);
     }
     return $result;
   }
 
   return htmlspecialchars($string, ENT_QUOTES, 'UTF-8');
 }
 
 function phutil_escape_html_newlines($string) {
   return PhutilSafeHTML::applyFunction('nl2br', $string);
 }
 
 /**
  * Mark string as safe for use in HTML.
  */
 function phutil_safe_html($string) {
   if ($string == '') {
     return $string;
   } else if ($string instanceof PhutilSafeHTML) {
     return $string;
   } else {
     return new PhutilSafeHTML($string);
   }
 }
 
 /**
  * HTML safe version of `implode()`.
  */
 function phutil_implode_html($glue, array $pieces) {
   $glue = phutil_escape_html($glue);
 
   foreach ($pieces as $k => $piece) {
     $pieces[$k] = phutil_escape_html($piece);
   }
 
   return phutil_safe_html(implode($glue, $pieces));
 }
 
 /**
  * Format a HTML code. This function behaves like `sprintf()`, except that all
  * the normal conversions (like %s) will be properly escaped.
  */
 function hsprintf($html /* , ... */) {
   $args = func_get_args();
   array_shift($args);
   return new PhutilSafeHTML(
     vsprintf($html, array_map('phutil_escape_html', $args)));
 }
 
 
 /**
  * Escape text for inclusion in a URI or a query parameter. Note that this
  * method does NOT escape '/', because "%2F" is invalid in paths and Apache
  * will automatically 404 the page if it's present. This will produce correct
  * (the URIs will work) and desirable (the URIs will be readable) behavior in
  * these cases:
  *
  *    '/path/?param='.phutil_escape_uri($string);         # OK: Query Parameter
  *    '/path/to/'.phutil_escape_uri($string);             # OK: URI Suffix
  *
  * It will potentially produce the WRONG behavior in this special case:
  *
  *    COUNTEREXAMPLE
  *    '/path/to/'.phutil_escape_uri($string).'/thing/';   # BAD: URI Infix
  *
  * In this case, any '/' characters in the string will not be escaped, so you
  * will not be able to distinguish between the string and the suffix (unless
  * you have more information, like you know the format of the suffix). For infix
  * URI components, use @{function:phutil_escape_uri_path_component} instead.
  *
  * @param   string  Some string.
  * @return  string  URI encoded string, except for '/'.
  */
 function phutil_escape_uri($string) {
   return str_replace('%2F', '/', rawurlencode($string));
 }
 
 
 /**
  * Escape text for inclusion as an infix URI substring. See discussion at
  * @{function:phutil_escape_uri}. This function covers an unusual special case;
  * @{function:phutil_escape_uri} is usually the correct function to use.
  *
  * This function will escape a string into a format which is safe to put into
  * a URI path and which does not contain '/' so it can be correctly parsed when
  * embedded as a URI infix component.
  *
  * However, you MUST decode the string with
  * @{function:phutil_unescape_uri_path_component} before it can be used in the
  * application.
  *
  * @param   string  Some string.
  * @return  string  URI encoded string that is safe for infix composition.
  */
 function phutil_escape_uri_path_component($string) {
   return rawurlencode(rawurlencode($string));
 }
 
 
 /**
  * Unescape text that was escaped by
  * @{function:phutil_escape_uri_path_component}. See
  * @{function:phutil_escape_uri} for discussion.
  *
  * Note that this function is NOT the inverse of
  * @{function:phutil_escape_uri_path_component}! It undoes additional escaping
  * which is added to survive the implied unescaping performed by the webserver
  * when interpreting the request.
  *
  * @param string  Some string emitted
  *                from @{function:phutil_escape_uri_path_component} and
  *                then accessed via a web server.
  * @return string Original string.
  */
 function phutil_unescape_uri_path_component($string) {
   return rawurldecode($string);
 }
diff --git a/src/moduleutils/PhutilBootloader.php b/src/moduleutils/PhutilBootloader.php
index f802493..83aad25 100644
--- a/src/moduleutils/PhutilBootloader.php
+++ b/src/moduleutils/PhutilBootloader.php
@@ -1,310 +1,328 @@
 <?php
 
 /**
  * IMPORTANT: Do not call any libphutil functions in this class, including
  * functions like @{function:id}, @{function:idx} and @{function:pht}. They
  * may not have loaded yet.
  */
 final class PhutilBootloader {
 
   private static $instance;
 
   private $registeredLibraries  = array();
   private $libraryMaps          = array();
   private $extensionMaps        = array();
   private $extendedMaps = array();
   private $currentLibrary       = null;
   private $classTree            = array();
   private $inMemoryMaps         = array();
 
   public static function getInstance() {
     if (!self::$instance) {
       self::$instance = new PhutilBootloader();
     }
     return self::$instance;
   }
 
   private function __construct() {
     // This method intentionally left blank.
   }
 
   public function getClassTree() {
     return $this->classTree;
   }
 
   public function registerInMemoryLibrary($name, $map) {
     $this->registeredLibraries[$name] = "memory:$name";
     $this->inMemoryMaps[$name] = $map;
 
     $this->getLibraryMap($name);
   }
 
   public function registerLibrary($name, $path) {
     if (basename($path) != '__phutil_library_init__.php') {
       throw new PhutilBootloaderException(
         'Only directories with a __phutil_library_init__.php file may be '.
         'registered as libphutil libraries.');
     }
 
     $path = dirname($path);
 
     // Detect attempts to load the same library multiple times from different
     // locations. This might mean you're doing something silly like trying to
     // include two different versions of something, or it might mean you're
     // doing something subtle like running a different version of 'arc' on a
     // working copy of Arcanist.
     if (isset($this->registeredLibraries[$name])) {
       $old_path = $this->registeredLibraries[$name];
       if ($old_path != $path) {
         throw new PhutilLibraryConflictException($name, $old_path, $path);
       }
     }
 
     $this->registeredLibraries[$name] = $path;
 
     // For libphutil v2 libraries, load all functions when we load the library.
 
     if (!class_exists('PhutilSymbolLoader', false)) {
       $root = $this->getLibraryRoot('phutil');
       $this->executeInclude($root.'/symbols/PhutilSymbolLoader.php');
     }
 
     $loader = new PhutilSymbolLoader();
     $loader
       ->setLibrary($name)
       ->setType('function');
 
     try {
       $loader->selectAndLoadSymbols();
     } catch (PhutilBootloaderException $ex) {
       // Ignore this, it happens if a global function's file is removed or
       // similar. Worst case is that we fatal when calling the function, which
       // is no worse than fataling here.
     } catch (PhutilMissingSymbolException $ex) {
       // Ignore this, it happens if a global function is removed. Everything
       // else loaded so proceed forward: worst case is a fatal when we
       // hit a function call to a function which no longer exists, which is
       // no worse than fataling here.
     }
 
     if (empty($_SERVER['PHUTIL_DISABLE_RUNTIME_EXTENSIONS'])) {
       $extdir = $path.DIRECTORY_SEPARATOR.'extensions';
       if (Filesystem::pathExists($extdir)) {
         $extensions = id(new FileFinder($extdir))
           ->withSuffix('php')
           ->withType('f')
           ->withFollowSymlinks(true)
           ->setForceMode('php')
           ->find();
 
         foreach ($extensions as $extension) {
           $this->loadExtension(
             $name,
             $path,
             $extdir.DIRECTORY_SEPARATOR.$extension);
         }
       }
     }
 
     return $this;
   }
 
   public function registerLibraryMap(array $map) {
     $this->libraryMaps[$this->currentLibrary] = $map;
     return $this;
   }
 
   public function getLibraryMap($name) {
     if (isset($this->extendedMaps[$name])) {
       return $this->extendedMaps[$name];
     }
 
     if (empty($this->libraryMaps[$name])) {
       $root = $this->getLibraryRoot($name);
       $this->currentLibrary = $name;
 
       if (isset($this->inMemoryMaps[$name])) {
         $this->libraryMaps[$name] = $this->inMemoryMaps[$name];
       } else {
         $okay = include $root.'/__phutil_library_map__.php';
         if (!$okay) {
           throw new PhutilBootloaderException(
             "Include of '{$root}/__phutil_library_map__.php' failed!");
         }
       }
 
       $map = $this->libraryMaps[$name];
 
       $version = isset($map['__library_version__'])
         ? $map['__library_version__']
         : 1;
 
       switch ($version) {
         case 1:
           throw new Exception(
             'libphutil v1 libraries are no longer supported.');
         case 2:
           // NOTE: In version 2 of the library format, all parents (both
           // classes and interfaces) are stored in the 'xmap'. The value is
           // either a string for a single parent (the common case) or an array
           // for multiple parents.
           foreach ($map['xmap'] as $child => $parents) {
             foreach ((array)$parents as $parent) {
               $this->classTree[$parent][] = $child;
             }
           }
           break;
         default:
           throw new Exception("Unsupported library version '{$version}'!");
       }
     }
 
     $map = $this->libraryMaps[$name];
 
     // If there's an extension map for this library, merge the maps.
     if (isset($this->extensionMaps[$name])) {
       $emap = $this->extensionMaps[$name];
       foreach (array('function', 'class', 'xmap') as $dict_key) {
         if (!isset($emap[$dict_key])) {
           continue;
         }
         $map[$dict_key] += $emap[$dict_key];
       }
     }
 
     $this->extendedMaps[$name] = $map;
 
     return $map;
   }
 
   public function getLibraryMapWithoutExtensions($name) {
     // This just does all the checks to make sure the library is valid, then
     // we throw away the result.
     $this->getLibraryMap($name);
 
     return $this->libraryMaps[$name];
   }
 
   public function getLibraryRoot($name) {
     if (empty($this->registeredLibraries[$name])) {
       throw new PhutilBootloaderException(
         "The phutil library '{$name}' has not been loaded!");
     }
     return $this->registeredLibraries[$name];
   }
 
   public function getAllLibraries() {
     return array_keys($this->registeredLibraries);
   }
 
   public function loadLibrary($path) {
     $root = null;
     if (!empty($_SERVER['PHUTIL_LIBRARY_ROOT'])) {
       if ($path[0] != '/') {
         $root = $_SERVER['PHUTIL_LIBRARY_ROOT'];
       }
     }
 
     $this->executeInclude($root.$path.'/__phutil_library_init__.php');
   }
 
   public function loadLibrarySource($library, $source) {
     $path = $this->getLibraryRoot($library).'/'.$source;
     $this->executeInclude($path);
   }
 
   private function executeInclude($path) {
     // Include the source using `include_once`, but convert any warnings or
     // errors into exceptions.
 
     // Some messages, including "Declaration of X should be compatible with Y",
     // do not cause `include_once` to return an error code. Use
     // error_get_last() to make sure we're catching everything in every PHP
     // version.
 
     // (Also, the severity of some messages changed between versions of PHP.)
 
     // Note that we may enter this method after some earlier, unrelated error.
     // In this case, error_get_last() will return information for that error.
     // In PHP7 and later we could use error_clear_last() to clear that error,
     // but the function does not exist in earlier versions of PHP. Instead,
     // check if the value has changed.
 
     // See also T12190.
 
     $old_last = error_get_last();
 
-    $old = error_reporting(0);
-    $okay = include_once $path;
-    error_reporting($old);
+    try {
+      $old = error_reporting(0);
+      $okay = include_once $path;
+      error_reporting($old);
+    } catch (Exception $ex) {
+      throw $ex;
+    } catch (ParseError $throwable) {
+      // NOTE: As of PHP7, syntax errors may raise a ParseError (which is a
+      // Throwable, not an Exception) with a useless message (like "syntax
+      // error, unexpected ':'") and a trace which ends a level above this.
+
+      // Treating this object normally results in an unusable message which
+      // does not identify where the syntax error occurred. Converting it to
+      // a string and taking the first line gives us something reasonable,
+      // however.
+      $message = (string)$throwable;
+      $message = preg_split("/\n/", $message);
+      $message = reset($message);
+
+      throw new Exception($message);
+    }
 
     if (!$okay) {
       throw new Exception("Source file \"{$path}\" failed to load.");
     }
 
     $new_last = error_get_last();
     if ($new_last !== null) {
       if ($new_last !== $old_last) {
         $message = $new_last['message'];
         throw new Exception(
           "Error while loading file \"{$path}\": {$message}");
       }
     }
   }
 
   private function loadExtension($library, $root, $path) {
     $old_functions = get_defined_functions();
     $old_functions = array_fill_keys($old_functions['user'], true);
     $old_classes = array_fill_keys(get_declared_classes(), true);
     $old_interfaces = array_fill_keys(get_declared_interfaces(), true);
 
     $this->executeInclude($path);
 
     $new_functions = get_defined_functions();
     $new_functions = array_fill_keys($new_functions['user'], true);
     $new_classes = array_fill_keys(get_declared_classes(), true);
     $new_interfaces = array_fill_keys(get_declared_interfaces(), true);
 
     $add_functions = array_diff_key($new_functions, $old_functions);
     $add_classes = array_diff_key($new_classes, $old_classes);
     $add_interfaces = array_diff_key($new_interfaces, $old_interfaces);
 
     // NOTE: We can't trust the path we loaded to be the location of these
     // symbols, because it might have loaded other paths.
 
     foreach ($add_functions as $func => $ignored) {
       $rfunc = new ReflectionFunction($func);
       $fpath = Filesystem::resolvePath($rfunc->getFileName(), $root);
       $this->extensionMaps[$library]['function'][$func] = $fpath;
     }
 
     foreach ($add_classes + $add_interfaces as $class => $ignored) {
       $rclass = new ReflectionClass($class);
       $cpath = Filesystem::resolvePath($rclass->getFileName(), $root);
       $this->extensionMaps[$library]['class'][$class] = $cpath;
 
       $xmap = $rclass->getInterfaceNames();
       $parent = $rclass->getParentClass();
       if ($parent) {
         $xmap[] = $parent->getName();
       }
 
       if ($xmap) {
         foreach ($xmap as $parent_class) {
           $this->classTree[$parent_class][] = $class;
         }
 
         if (count($xmap) == 1) {
           $xmap = head($xmap);
         }
 
         $this->extensionMaps[$library]['xmap'][$class] = $xmap;
       }
     }
 
     // Clear the extended library cache (should one exist) so we know that
     // we need to rebuild it.
     unset($this->extendedMaps[$library]);
   }
 
 }
diff --git a/src/parser/xhpast/__tests__/data/optional-parameter.php.test b/src/parser/xhpast/__tests__/data/optional-parameter.php.test
new file mode 100644
index 0000000..5d032b7
--- /dev/null
+++ b/src/parser/xhpast/__tests__/data/optional-parameter.php.test
@@ -0,0 +1,282 @@
+<?php
+
+function a(?int $x) {}
+function b(?SomeClass $x) {}
+~~~~~~~~~~
+pass
+~~~~~~~~~~
+{
+  "tree": [
+    9000,
+    0,
+    27,
+    [
+      [
+        9006,
+        0,
+        26,
+        [
+          [
+            9007,
+            0,
+            0
+          ],
+          [
+            9004,
+            2,
+            13,
+            [
+              [
+                9050,
+                2,
+                13,
+                [
+                  [
+                    9005
+                  ],
+                  [
+                    9005
+                  ],
+                  [
+                    9013,
+                    4,
+                    4
+                  ],
+                  [
+                    9059,
+                    5,
+                    10,
+                    [
+                      [
+                        9060,
+                        7,
+                        9,
+                        [
+                          [
+                            9116,
+                            7,
+                            7,
+                            [
+                              [
+                                9090,
+                                7,
+                                7
+                              ]
+                            ]
+                          ],
+                          [
+                            9047,
+                            9,
+                            9
+                          ],
+                          [
+                            9005
+                          ]
+                        ]
+                      ]
+                    ]
+                  ],
+                  [
+                    9005
+                  ],
+                  [
+                    9005
+                  ],
+                  [
+                    9006,
+                    12,
+                    13
+                  ]
+                ]
+              ]
+            ]
+          ],
+          [
+            9004,
+            15,
+            26,
+            [
+              [
+                9050,
+                15,
+                26,
+                [
+                  [
+                    9005
+                  ],
+                  [
+                    9005
+                  ],
+                  [
+                    9013,
+                    17,
+                    17
+                  ],
+                  [
+                    9059,
+                    18,
+                    23,
+                    [
+                      [
+                        9060,
+                        20,
+                        22,
+                        [
+                          [
+                            9116,
+                            20,
+                            20,
+                            [
+                              [
+                                9090,
+                                20,
+                                20
+                              ]
+                            ]
+                          ],
+                          [
+                            9047,
+                            22,
+                            22
+                          ],
+                          [
+                            9005
+                          ]
+                        ]
+                      ]
+                    ]
+                  ],
+                  [
+                    9005
+                  ],
+                  [
+                    9005
+                  ],
+                  [
+                    9006,
+                    25,
+                    26
+                  ]
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+}
diff --git a/src/parser/xhpast/__tests__/data/return-type.php.test b/src/parser/xhpast/__tests__/data/return-type.php.test
deleted file mode 100644
index 25f331a..0000000
--- a/src/parser/xhpast/__tests__/data/return-type.php.test
+++ /dev/null
@@ -1,2234 +0,0 @@
-<?php
-
-function a(): string {}
-
-function b(): array {}
-
-function c(): callable {}
-
-function d(): ?string {}
-
-function e(): void {}
-
-// TODO: This shouldn't technically be allowed as it will cause a fatal error.
-function f(): ?void {}
-
-class a {
-  function b(): string {}
-  function c(): array {}
-  function d(): callable {}
-}
-
-$funcs = [
-  function (): string {},
-  function (): array {},
-  function (): callable {},
-  function (): ?string {},
-  function (): void {},
-
-  static function (): string {},
-  static function (): array {},
-  static function (): callable {},
-  static function (): ?string {},
-  static function (): void {},
-];
-
-~~~~~~~~~~
-pass
-~~~~~~~~~~
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-      1
-    ],
-    [
-      41,
-      1
-    ],
-    [
-      58,
-      1
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      311,
-      6
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      123,
-      1
-    ],
-    [
-      125,
-      1
-    ],
-    [
-      377,
-      2
-    ],
-    [
-      339,
-      8
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      311,
-      1
-    ],
-    [
-      40,
-      1
-    ],
-    [
-      41,
-      1
-    ],
-    [
-      58,
-      1
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      365,
-      5
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      123,
-      1
-    ],
-    [
-      125,
-      1
-    ],
-    [
-      377,
-      2
-    ],
-    [
-      339,
-      8
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      311,
-      1
-    ],
-    [
-      40,
-      1
-    ],
-    [
-      41,
-      1
-    ],
-    [
-      58,
-      1
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      391,
-      8
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      123,
-      1
-    ],
-    [
-      125,
-      1
-    ],
-    [
-      377,
-      2
-    ],
-    [
-      339,
-      8
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      311,
-      1
-    ],
-    [
-      40,
-      1
-    ],
-    [
-      41,
-      1
-    ],
-    [
-      58,
-      1
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      63,
-      1
-    ],
-    [
-      311,
-      6
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      123,
-      1
-    ],
-    [
-      125,
-      1
-    ],
-    [
-      377,
-      2
-    ],
-    [
-      339,
-      8
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      311,
-      1
-    ],
-    [
-      40,
-      1
-    ],
-    [
-      41,
-      1
-    ],
-    [
-      58,
-      1
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      311,
-      4
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      123,
-      1
-    ],
-    [
-      125,
-      1
-    ],
-    [
-      377,
-      2
-    ],
-    [
-      371,
-      79
-    ],
-    [
-      339,
-      8
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      311,
-      1
-    ],
-    [
-      40,
-      1
-    ],
-    [
-      41,
-      1
-    ],
-    [
-      58,
-      1
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      63,
-      1
-    ],
-    [
-      311,
-      4
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      123,
-      1
-    ],
-    [
-      125,
-      1
-    ],
-    [
-      377,
-      2
-    ],
-    [
-      358,
-      5
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      311,
-      1
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      123,
-      1
-    ],
-    [
-      377,
-      3
-    ],
-    [
-      339,
-      8
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      311,
-      1
-    ],
-    [
-      40,
-      1
-    ],
-    [
-      41,
-      1
-    ],
-    [
-      58,
-      1
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      311,
-      6
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      123,
-      1
-    ],
-    [
-      125,
-      1
-    ],
-    [
-      377,
-      3
-    ],
-    [
-      339,
-      8
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      311,
-      1
-    ],
-    [
-      40,
-      1
-    ],
-    [
-      41,
-      1
-    ],
-    [
-      58,
-      1
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      365,
-      5
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      123,
-      1
-    ],
-    [
-      125,
-      1
-    ],
-    [
-      377,
-      3
-    ],
-    [
-      339,
-      8
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      311,
-      1
-    ],
-    [
-      40,
-      1
-    ],
-    [
-      41,
-      1
-    ],
-    [
-      58,
-      1
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      391,
-      8
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      123,
-      1
-    ],
-    [
-      125,
-      1
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      125,
-      1
-    ],
-    [
-      377,
-      2
-    ],
-    [
-      313,
-      6
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      61,
-      1
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      91,
-      1
-    ],
-    [
-      377,
-      3
-    ],
-    [
-      339,
-      8
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      40,
-      1
-    ],
-    [
-      41,
-      1
-    ],
-    [
-      58,
-      1
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      311,
-      6
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      123,
-      1
-    ],
-    [
-      125,
-      1
-    ],
-    [
-      44,
-      1
-    ],
-    [
-      377,
-      3
-    ],
-    [
-      339,
-      8
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      40,
-      1
-    ],
-    [
-      41,
-      1
-    ],
-    [
-      58,
-      1
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      365,
-      5
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      123,
-      1
-    ],
-    [
-      125,
-      1
-    ],
-    [
-      44,
-      1
-    ],
-    [
-      377,
-      3
-    ],
-    [
-      339,
-      8
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      40,
-      1
-    ],
-    [
-      41,
-      1
-    ],
-    [
-      58,
-      1
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      391,
-      8
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      123,
-      1
-    ],
-    [
-      125,
-      1
-    ],
-    [
-      44,
-      1
-    ],
-    [
-      377,
-      3
-    ],
-    [
-      339,
-      8
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      40,
-      1
-    ],
-    [
-      41,
-      1
-    ],
-    [
-      58,
-      1
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      63,
-      1
-    ],
-    [
-      311,
-      6
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      123,
-      1
-    ],
-    [
-      125,
-      1
-    ],
-    [
-      44,
-      1
-    ],
-    [
-      377,
-      3
-    ],
-    [
-      339,
-      8
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      40,
-      1
-    ],
-    [
-      41,
-      1
-    ],
-    [
-      58,
-      1
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      311,
-      4
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      123,
-      1
-    ],
-    [
-      125,
-      1
-    ],
-    [
-      44,
-      1
-    ],
-    [
-      377,
-      4
-    ],
-    [
-      347,
-      6
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      339,
-      8
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      40,
-      1
-    ],
-    [
-      41,
-      1
-    ],
-    [
-      58,
-      1
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      311,
-      6
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      123,
-      1
-    ],
-    [
-      125,
-      1
-    ],
-    [
-      44,
-      1
-    ],
-    [
-      377,
-      3
-    ],
-    [
-      347,
-      6
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      339,
-      8
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      40,
-      1
-    ],
-    [
-      41,
-      1
-    ],
-    [
-      58,
-      1
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      365,
-      5
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      123,
-      1
-    ],
-    [
-      125,
-      1
-    ],
-    [
-      44,
-      1
-    ],
-    [
-      377,
-      3
-    ],
-    [
-      347,
-      6
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      339,
-      8
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      40,
-      1
-    ],
-    [
-      41,
-      1
-    ],
-    [
-      58,
-      1
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      391,
-      8
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      123,
-      1
-    ],
-    [
-      125,
-      1
-    ],
-    [
-      44,
-      1
-    ],
-    [
-      377,
-      3
-    ],
-    [
-      347,
-      6
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      339,
-      8
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      40,
-      1
-    ],
-    [
-      41,
-      1
-    ],
-    [
-      58,
-      1
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      63,
-      1
-    ],
-    [
-      311,
-      6
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      123,
-      1
-    ],
-    [
-      125,
-      1
-    ],
-    [
-      44,
-      1
-    ],
-    [
-      377,
-      3
-    ],
-    [
-      347,
-      6
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      339,
-      8
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      40,
-      1
-    ],
-    [
-      41,
-      1
-    ],
-    [
-      58,
-      1
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      311,
-      4
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      123,
-      1
-    ],
-    [
-      125,
-      1
-    ],
-    [
-      44,
-      1
-    ],
-    [
-      377,
-      1
-    ],
-    [
-      93,
-      1
-    ],
-    [
-      59,
-      1
-    ],
-    [
-      377,
-      2
-    ]
-  ]
-}
diff --git a/src/parser/xhpast/bin/PhutilXHPASTBinary.php b/src/parser/xhpast/bin/PhutilXHPASTBinary.php
index c1b3cd7..9a8274c 100644
--- a/src/parser/xhpast/bin/PhutilXHPASTBinary.php
+++ b/src/parser/xhpast/bin/PhutilXHPASTBinary.php
@@ -1,134 +1,134 @@
 <?php
 
 final class PhutilXHPASTBinary extends Phobject {
 
   /**
    * The expected XHPAST version.
    *
    * This is the version that would be obtained with an up-to-date XHPAST
    * build. The //actual// XHPAST build version may vary.
    */
-  const EXPECTED_VERSION = '7.1.0';
+  const EXPECTED_VERSION = '7.1.2';
 
   /**
    * The XHPAST build version.
    *
    * Cache the result from @{method:getVersion} to prevent excessive calls to
    * @{function:execx}.
    */
   private static $version;
 
   /**
    * Builds XHPAST automatically.
    *
    * Attempts to build the XHPAST binary automatically.
    *
    * @return void
    */
   public static function build() {
     if (Filesystem::binaryExists('gmake')) {
       $command = 'gmake';
     } else {
       $command = 'make';
     }
 
     $root = phutil_get_library_root('phutil');
     $path = Filesystem::resolvePath($root.'/../support/xhpast');
 
     // Run the build.
     execx(
       '%s -C %s %Ls',
       $command,
       $path,
       array('SKIP_PARSER=1', 'SKIP_SCANNER=1', 'clean', 'all', 'install'));
 
     self::$version = null;
 
     // Test the binary.
     if (!self::isAvailable()) {
       throw new Exception(pht('%s is broken.', 'xhpast'));
     }
   }
 
   /**
    * Returns human-readable instructions for building XHPAST.
    *
    * @return string
    */
   public static function getBuildInstructions() {
     $root = phutil_get_library_root('phutil');
     $make = Filesystem::resolvePath($root.'/../scripts/build_xhpast.php');
 
     return phutil_console_format(
       "%s:\n\n  \$ %s\n",
       pht(
         "Your version of '%s' is unbuilt or out of date. Run this ".
         "script to build it.",
         'xhpast'),
       $make);
   }
 
   /**
    * Constructs an @{class:ExecFuture} for XHPAST.
    *
    * @param  wild        Data to pass to the future.
    * @return ExecFuture
    */
   public static function getParserFuture($data) {
     if (!self::isAvailable()) {
       try {
         // Try to build XHPAST automatically. If we can't then just ask the
         // user to build it themselves.
         self::build();
       } catch (CommandException $ex) {
         throw new PhutilProxyException(self::getBuildInstructions(), $ex);
       }
     }
     $future = new ExecFuture('%s', self::getPath());
     $future->write($data);
 
     return $future;
   }
 
   /**
    * Returns the path to the XHPAST binary.
    *
    * @return string
    */
   public static function getPath() {
     if (phutil_is_windows()) {
       return dirname(__FILE__).'\\xhpast.exe';
     }
     return dirname(__FILE__).'/xhpast';
   }
 
   /**
    * Returns the XHPAST version.
    *
    * @return string
    */
   public static function getVersion() {
     if (self::$version === null) {
       $bin = self::getPath();
 
       if (Filesystem::pathExists($bin)) {
         list($err, $stdout) = exec_manual('%s --version', $bin);
         if (!$err) {
           self::$version = trim($stdout);
         }
       }
     }
 
     return self::$version;
   }
 
   /**
    * Checks if XHPAST is built and up-to-date.
    *
    * @return bool
    */
   public static function isAvailable() {
     return self::getVersion() == self::EXPECTED_VERSION;
   }
 
 }
diff --git a/src/parser/xhpast/parser_nodes.php b/src/parser/xhpast/parser_nodes.php
index 6418235..b2b1b83 100644
--- a/src/parser/xhpast/parser_nodes.php
+++ b/src/parser/xhpast/parser_nodes.php
@@ -1,126 +1,127 @@
 <?php
 
 /**
  * @generated
  * @undivinable
  */
 function xhp_parser_node_constants() {
   return array(
     9000 => 'n_PROGRAM',
     9001 => 'n_SYMBOL_NAME',
     9002 => 'n_HALT_COMPILER',
     9003 => 'n_NAMESPACE',
     9004 => 'n_STATEMENT',
     9005 => 'n_EMPTY',
     9006 => 'n_STATEMENT_LIST',
     9007 => 'n_OPEN_TAG',
     9008 => 'n_CLOSE_TAG',
     9009 => 'n_USE_LIST',
     9010 => 'n_USE',
     9011 => 'n_CONSTANT_DECLARATION_LIST',
     9012 => 'n_CONSTANT_DECLARATION',
     9013 => 'n_STRING',
     9014 => 'n_LABEL',
     9015 => 'n_CONDITION_LIST',
     9016 => 'n_CONTROL_CONDITION',
     9017 => 'n_IF',
     9018 => 'n_ELSEIF',
     9019 => 'n_ELSE',
     9020 => 'n_WHILE',
     9021 => 'n_DO_WHILE',
     9022 => 'n_FOR',
     9023 => 'n_FOR_EXPRESSION',
     9024 => 'n_SWITCH',
     9025 => 'n_BREAK',
     9026 => 'n_CONTINUE',
     9027 => 'n_RETURN',
     9028 => 'n_GLOBAL_DECLARATION_LIST',
     9029 => 'n_GLOBAL_DECLARATION',
     9030 => 'n_STATIC_DECLARATION_LIST',
     9031 => 'n_STATIC_DECLARATION',
     9032 => 'n_ECHO_LIST',
     9033 => 'n_ECHO',
     9034 => 'n_INLINE_HTML',
     9035 => 'n_UNSET_LIST',
     9036 => 'n_UNSET',
     9037 => 'n_FOREACH',
     9038 => 'n_FOREACH_EXPRESSION',
     9039 => 'n_THROW',
     9040 => 'n_GOTO',
     9041 => 'n_TRY',
     9042 => 'n_CATCH_LIST',
     9043 => 'n_CATCH',
     9044 => 'n_DECLARE',
     9045 => 'n_DECLARE_DECLARATION_LIST',
     9046 => 'n_DECLARE_DECLARATION',
     9047 => 'n_VARIABLE',
     9048 => 'n_REFERENCE',
     9049 => 'n_VARIABLE_REFERENCE',
     9050 => 'n_FUNCTION_DECLARATION',
     9051 => 'n_CLASS_DECLARATION',
     9052 => 'n_CLASS_ATTRIBUTES',
     9053 => 'n_EXTENDS',
     9054 => 'n_EXTENDS_LIST',
     9055 => 'n_IMPLEMENTS_LIST',
     9056 => 'n_INTERFACE_DECLARATION',
     9057 => 'n_CASE',
     9058 => 'n_DEFAULT',
     9059 => 'n_DECLARATION_PARAMETER_LIST',
     9060 => 'n_DECLARATION_PARAMETER',
     9061 => 'n_TYPE_NAME',
     9062 => 'n_VARIABLE_VARIABLE',
     9063 => 'n_CLASS_MEMBER_DECLARATION_LIST',
     9064 => 'n_CLASS_MEMBER_DECLARATION',
     9065 => 'n_CLASS_CONSTANT_DECLARATION_LIST',
     9066 => 'n_CLASS_CONSTANT_DECLARATION',
     9067 => 'n_METHOD_DECLARATION',
     9068 => 'n_METHOD_MODIFIER_LIST',
     9069 => 'n_FUNCTION_MODIFIER_LIST',
     9070 => 'n_CLASS_MEMBER_MODIFIER_LIST',
     9071 => 'n_EXPRESSION_LIST',
     9072 => 'n_LIST',
     9073 => 'n_ASSIGNMENT',
     9074 => 'n_NEW',
     9075 => 'n_UNARY_PREFIX_EXPRESSION',
     9076 => 'n_UNARY_POSTFIX_EXPRESSION',
     9077 => 'n_BINARY_EXPRESSION',
     9078 => 'n_TERNARY_EXPRESSION',
     9079 => 'n_CAST_EXPRESSION',
     9080 => 'n_CAST',
     9081 => 'n_OPERATOR',
     9082 => 'n_ARRAY_LITERAL',
     9083 => 'n_EXIT_EXPRESSION',
     9084 => 'n_BACKTICKS_EXPRESSION',
     9085 => 'n_LEXICAL_VARIABLE_LIST',
     9086 => 'n_NUMERIC_SCALAR',
     9087 => 'n_STRING_SCALAR',
     9088 => 'n_MAGIC_SCALAR',
     9089 => 'n_CLASS_STATIC_ACCESS',
     9090 => 'n_CLASS_NAME',
     9091 => 'n_MAGIC_CLASS_KEYWORD',
     9092 => 'n_OBJECT_PROPERTY_ACCESS',
     9093 => 'n_ARRAY_VALUE_LIST',
     9094 => 'n_ARRAY_VALUE',
     9095 => 'n_CALL_PARAMETER_LIST',
     9096 => 'n_VARIABLE_EXPRESSION',
     9097 => 'n_INCLUDE_FILE',
     9098 => 'n_HEREDOC',
     9099 => 'n_FUNCTION_CALL',
     9100 => 'n_INDEX_ACCESS',
     9101 => 'n_ASSIGNMENT_LIST',
     9102 => 'n_METHOD_CALL',
     9103 => 'n_CONCATENATION_LIST',
     9104 => 'n_PARENTHETICAL_EXPRESSION',
     9105 => 'n_TRAIT_USE',
     9106 => 'n_TRAIT_USE_LIST',
     9107 => 'n_TRAIT_ADAPTATION_LIST',
     9108 => 'n_TRAIT_INSTEADOF',
     9109 => 'n_TRAIT_REFERENCE_LIST',
     9110 => 'n_TRAIT_METHOD_REFERENCE',
     9111 => 'n_TRAIT_AS',
     9112 => 'n_YIELD',
     9113 => 'n_FINALLY',
     9114 => 'n_UNPACK',
     9115 => 'n_DECLARATION_RETURN',
+    9116 => 'n_NULLABLE_TYPE',
   );
 }
diff --git a/src/search/__tests__/PhutilSearchQueryCompilerTestCase.php b/src/search/__tests__/PhutilSearchQueryCompilerTestCase.php
index 0dba0c1..647386f 100644
--- a/src/search/__tests__/PhutilSearchQueryCompilerTestCase.php
+++ b/src/search/__tests__/PhutilSearchQueryCompilerTestCase.php
@@ -1,221 +1,220 @@
 <?php
 
 final class PhutilSearchQueryCompilerTestCase
   extends PhutilTestCase {
 
   public function testCompileQueries() {
     $tests = array(
       '' => null,
       'cat dog' => '+"cat" +"dog"',
       'cat -dog' => '+"cat" -"dog"',
       'cat-dog' => '+"cat-dog"',
 
       // If there are spaces after an operator, the operator applies to the
       // next search term.
       'cat - dog' => '+"cat" -"dog"',
 
       // Double quotes serve as delimiters even if there is no whitespace
       // between terms.
       '"cat"dog' => '+"cat" +"dog"',
 
       // This query is too long.
       str_repeat('x', 2048) => false,
 
       // Multiple operators are not permitted.
       '++cat' => false,
       '+-cat' => false,
       '--cat' => false,
 
       // Stray operators are not permitted.
       '+' => false,
       'cat +' => false,
 
       // Double quotes must be paired.
       '"' => false,
       'cat "' => false,
       '"cat' => false,
       'A"' => false,
       'A"B"' => '+"A" +"B"',
     );
 
     $this->assertCompileQueries($tests);
 
     // Test that we compile queries correctly if the operators have been
     // swapped to use "AND" by default.
     $operator_tests = array(
       'cat dog' => '"cat" "dog"',
       'cat -dog' => '"cat" -"dog"',
     );
     $this->assertCompileQueries($operator_tests, ' |-><()~*:""&\'');
 
 
     // Test that we compile queries correctly if the quote operators have
     // been swapped to differ.
     $quote_tests = array(
       'cat dog' => '+[cat] +[dog]',
       'cat -dog' => '+[cat] -[dog]',
     );
     $this->assertCompileQueries($quote_tests, '+ -><()~*:[]&|');
 
   }
 
   public function testCompileQueriesWithStemming() {
     $stemming_tests = array(
       'cat dog' => array(
         null,
         '+"cat" +"dog"',
       ),
       'cats dogs' => array(
         null,
         '+"cat" +"dog"',
       ),
       'cats "dogs"' => array(
         '+"dogs"',
         '+"cat"',
       ),
       '"blessed blade" of the windseeker' => array(
         '+"blessed blade"',
         '+"of" +"the" +"windseek"',
       ),
       'mailing users for mentions on tasks' => array(
         null,
         '+"mail" +"user" +"for" +"mention" +"on" +"task"',
       ),
     );
 
     $stemmer = new PhutilSearchStemmer();
     $this->assertCompileQueries($stemming_tests, null, $stemmer);
   }
 
   public function testCompileQueriesWithFunctions() {
     $op_and = PhutilSearchQueryCompiler::OPERATOR_AND;
     $op_sub = PhutilSearchQueryCompiler::OPERATOR_SUBSTRING;
     $op_exact = PhutilSearchQueryCompiler::OPERATOR_EXACT;
 
     $mao = "\xE7\x8C\xAB";
 
     $function_tests = array(
       'cat' => array(
         array(null, $op_and, 'cat'),
       ),
       ':cat' => array(
         array(null, $op_and, 'cat'),
       ),
       'title:cat' => array(
         array('title', $op_and, 'cat'),
       ),
       'title:cat:dog' => array(
         array('title', $op_and, 'cat:dog'),
       ),
       'title:~cat' => array(
         array('title', $op_sub, 'cat'),
       ),
       'cat title:="Meow Meow"' => array(
         array(null, $op_and, 'cat'),
         array('title', $op_exact, 'Meow Meow'),
       ),
       'title:cat title:dog' => array(
         array('title', $op_and, 'cat'),
         array('title', $op_and, 'dog'),
       ),
       '~"core and seven years ag"' => array(
         array(null, $op_sub, 'core and seven years ag'),
       ),
       $mao => array(
         array(null, $op_sub, $mao),
       ),
       '+'.$mao => array(
         array(null, $op_and, $mao),
       ),
       '~'.$mao => array(
         array(null, $op_sub, $mao),
       ),
       '"'.$mao.'"' => array(
         array(null, $op_and, $mao),
       ),
->>>>>>> upstream/stable
     );
 
     $this->assertCompileFunctionQueries($function_tests);
   }
 
   private function assertCompileQueries(
     array $tests,
     $operators = null,
     PhutilSearchStemmer $stemmer = null) {
     foreach ($tests as $input => $expect) {
       $caught = null;
 
       $query = null;
       $literal_query = null;
       $stemmed_query = null;
 
       try {
         $compiler = new PhutilSearchQueryCompiler();
 
         if ($operators !== null) {
           $compiler->setOperators($operators);
         }
 
         if ($stemmer !== null) {
           $compiler->setStemmer($stemmer);
         }
 
         $tokens = $compiler->newTokens($input);
 
         if ($stemmer) {
           $literal_query = $compiler->compileLiteralQuery($tokens);
           $stemmed_query = $compiler->compileStemmedQuery($tokens);
         } else {
           $query = $compiler->compileQuery($tokens);
         }
       } catch (PhutilSearchQueryCompilerSyntaxException $ex) {
         $caught = $ex;
       }
 
       if ($caught !== null) {
         $query = false;
         $literal_query = false;
         $stemmed_query = false;
       }
 
       if (!$stemmer) {
         $this->assertEqual(
           $expect,
           $query,
           pht('Compilation of query: %s', $input));
       } else {
         $this->assertEqual(
           $expect,
           ($literal_query === false)
             ? false
             : array($literal_query, $stemmed_query),
           pht('Stemmed compilation of query: %s', $input));
       }
     }
   }
 
   private function assertCompileFunctionQueries(array $tests) {
     foreach ($tests as $input => $expect) {
       $compiler = id(new PhutilSearchQueryCompiler())
         ->setEnableFunctions(true);
 
       $tokens = $compiler->newTokens($input);
 
       $result = array();
       foreach ($tokens as $token) {
         $result[] = array(
           $token->getFunction(),
           $token->getOperator(),
           $token->getValue(),
         );
       }
 
       $this->assertEqual(
         $expect,
         $result,
         pht('Function compilation of query: %s', $input));
     }
   }
 
 }
diff --git a/support/xhpast/generate_nodes.php b/support/xhpast/generate_nodes.php
index ec7c642..22ea26c 100755
--- a/support/xhpast/generate_nodes.php
+++ b/support/xhpast/generate_nodes.php
@@ -1,163 +1,164 @@
 #!/usr/bin/env php
 <?php
 
 require_once dirname(__FILE__).'/../../scripts/__init_script__.php';
 
 $offset = 9000;
 $nodes = array(
   'n_PROGRAM',
   'n_SYMBOL_NAME',
   'n_HALT_COMPILER',
   'n_NAMESPACE',
   'n_STATEMENT',
   'n_EMPTY',
   'n_STATEMENT_LIST',
   'n_OPEN_TAG',
   'n_CLOSE_TAG',
   'n_USE_LIST',
   'n_USE',
   'n_CONSTANT_DECLARATION_LIST',
   'n_CONSTANT_DECLARATION',
   'n_STRING',
   'n_LABEL',
   'n_CONDITION_LIST',
   'n_CONTROL_CONDITION',
   'n_IF',
   'n_ELSEIF',
   'n_ELSE',
   'n_WHILE',
   'n_DO_WHILE',
   'n_FOR',
   'n_FOR_EXPRESSION',
   'n_SWITCH',
   'n_BREAK',
   'n_CONTINUE',
   'n_RETURN',
   'n_GLOBAL_DECLARATION_LIST',
   'n_GLOBAL_DECLARATION',
   'n_STATIC_DECLARATION_LIST',
   'n_STATIC_DECLARATION',
   'n_ECHO_LIST',
   'n_ECHO',
   'n_INLINE_HTML',
   'n_UNSET_LIST',
   'n_UNSET',
   'n_FOREACH',
   'n_FOREACH_EXPRESSION',
   'n_THROW',
   'n_GOTO',
   'n_TRY',
   'n_CATCH_LIST',
   'n_CATCH',
   'n_DECLARE',
   'n_DECLARE_DECLARATION_LIST',
   'n_DECLARE_DECLARATION',
   'n_VARIABLE',
   'n_REFERENCE',
   'n_VARIABLE_REFERENCE',
   'n_FUNCTION_DECLARATION',
   'n_CLASS_DECLARATION',
   'n_CLASS_ATTRIBUTES',
   'n_EXTENDS',
   'n_EXTENDS_LIST',
   'n_IMPLEMENTS_LIST',
   'n_INTERFACE_DECLARATION',
   'n_CASE',
   'n_DEFAULT',
   'n_DECLARATION_PARAMETER_LIST',
   'n_DECLARATION_PARAMETER',
   'n_TYPE_NAME',
   'n_VARIABLE_VARIABLE',
   'n_CLASS_MEMBER_DECLARATION_LIST',
   'n_CLASS_MEMBER_DECLARATION',
   'n_CLASS_CONSTANT_DECLARATION_LIST',
   'n_CLASS_CONSTANT_DECLARATION',
   'n_METHOD_DECLARATION',
   'n_METHOD_MODIFIER_LIST',
   'n_FUNCTION_MODIFIER_LIST',
   'n_CLASS_MEMBER_MODIFIER_LIST',
   'n_EXPRESSION_LIST',
   'n_LIST',
   'n_ASSIGNMENT',
   'n_NEW',
   'n_UNARY_PREFIX_EXPRESSION',
   'n_UNARY_POSTFIX_EXPRESSION',
   'n_BINARY_EXPRESSION',
   'n_TERNARY_EXPRESSION',
   'n_CAST_EXPRESSION',
   'n_CAST',
   'n_OPERATOR',
   'n_ARRAY_LITERAL',
   'n_EXIT_EXPRESSION',
   'n_BACKTICKS_EXPRESSION',
   'n_LEXICAL_VARIABLE_LIST',
   'n_NUMERIC_SCALAR',
   'n_STRING_SCALAR',
   'n_MAGIC_SCALAR',
   'n_CLASS_STATIC_ACCESS',
   'n_CLASS_NAME',
   'n_MAGIC_CLASS_KEYWORD',
   'n_OBJECT_PROPERTY_ACCESS',
   'n_ARRAY_VALUE_LIST',
   'n_ARRAY_VALUE',
   'n_CALL_PARAMETER_LIST',
   'n_VARIABLE_EXPRESSION',
   'n_INCLUDE_FILE',
   'n_HEREDOC',
   'n_FUNCTION_CALL',
   'n_INDEX_ACCESS',
   'n_ASSIGNMENT_LIST',
   'n_METHOD_CALL',
   'n_CONCATENATION_LIST',
   'n_PARENTHETICAL_EXPRESSION',
   'n_TRAIT_USE',
   'n_TRAIT_USE_LIST',
   'n_TRAIT_ADAPTATION_LIST',
   'n_TRAIT_INSTEADOF',
   'n_TRAIT_REFERENCE_LIST',
   'n_TRAIT_METHOD_REFERENCE',
   'n_TRAIT_AS',
   'n_YIELD',
   'n_FINALLY',
   'n_UNPACK',
   'n_DECLARATION_RETURN',
+  'n_NULLABLE_TYPE',
 );
 
 $nodes = array_combine(
   array_values($nodes),
   range($offset, $offset + count($nodes) - 1));
 
 $hpp = '';
 foreach ($nodes as $node => $value) {
   $hpp .= "#define {$node} {$value}\n";
 }
 Filesystem::writeFile(
   Filesystem::resolvePath('node_names.hpp', dirname(__FILE__)),
   $hpp);
 echo pht('Wrote C++ definition.')."\n";
 
 $at = '@';
 $php = <<<EOPHP
 <?php
 
 /**
  * {$at}generated
  * {$at}undivinable
  */
 function xhp_parser_node_constants() {
   return array(
 
 EOPHP;
 
 foreach ($nodes as $node => $value) {
   $php .= "    {$value} => '{$node}',\n";
 }
 $php .= <<<EOPHP
   );
 }
 
 EOPHP;
 Filesystem::writeFile(
   Filesystem::resolvePath('parser_nodes.php', dirname(__FILE__)),
   $php);
 echo pht('Wrote PHP definition.')."\n";
diff --git a/support/xhpast/parser.y b/support/xhpast/parser.y
index be30a9b..99744c5 100644
--- a/support/xhpast/parser.y
+++ b/support/xhpast/parser.y
@@ -1,2773 +1,2771 @@
 %{
 /*
  * If you modify this grammar, please update the version number in
  * ./xhpast.cpp and libphutil/src/parser/xhpast/bin/xhpast_parse.php
  */
 
 #include "ast.hpp"
 #include "node_names.hpp"
 // PHP's if/else rules use right reduction rather than left reduction which
 // means while parsing nested if/else's the stack grows until it the last
 // statement is read. This is annoying, particularly because of a quirk in
 // bison.
 // http://www.gnu.org/software/bison/manual/html_node/Memory-Management.html
 // Apparently if you compile a bison parser with g++ it can no longer grow
 // the stack. The work around is to just make your initial stack ridiculously
 // large. Unfortunately that increases memory usage while parsing which is
 // dumb. Anyway, putting a TODO here to fix PHP's if/else grammar.
 #define YYINITDEPTH 500
 %}
 
 %{
 #undef yyextra
 #define yyextra static_cast<yy_extra_type*>(xhpastget_extra(yyscanner))
 #undef yylineno
 #define yylineno yyextra->first_lineno
 #define push_state(s) xhp_new_push_state(s, (struct yyguts_t*) yyscanner)
 #define pop_state() xhp_new_pop_state((struct yyguts_t*) yyscanner)
 #define set_state(s) xhp_set_state(s, (struct yyguts_t*) yyscanner)
 
 #define NNEW(t) \
   (new xhpast::Node(t))
 
 #define NTYPE(n, type) \
   ((n)->setType(type))
 
 #define NMORE(n, end) \
   ((n)->expandRange(end))
 
 #define NSPAN(n, type, end) \
   (NMORE(NTYPE((n), type), end))
 
 #define NEXPAND(l, n, r) \
   ((n)->expandRange(l)->expandRange(r))
 
 using namespace std;
 
 static void yyerror(void* yyscanner, void* _, const char* error) {
   if (yyextra->terminated) {
     return;
   }
   yyextra->terminated = true;
   yyextra->error = error;
 }
 
 %}
 
 %expect 5
 // 2: PHP's if/else grammar
 // 7: expr '[' dim_offset ']' -- shift will default to first grammar
 %name-prefix "xhpast"
 %pure-parser
 %parse-param { void* yyscanner }
 %parse-param { xhpast::Node** root }
 %lex-param { void* yyscanner }
 %error-verbose
 
 %precedence T_INCLUDE T_INCLUDE_ONCE
 %token T_EVAL
 %precedence T_REQUIRE T_REQUIRE_ONCE
 %token ','
 %left T_LOGICAL_OR
 %left T_LOGICAL_XOR
 %left T_LOGICAL_AND
 %precedence T_PRINT
 %precedence '=' T_PLUS_EQUAL
   T_MINUS_EQUAL
   T_MUL_EQUAL
   T_DIV_EQUAL
   T_CONCAT_EQUAL
   T_MOD_EQUAL
   T_AND_EQUAL
   T_OR_EQUAL
   T_XOR_EQUAL
   T_SL_EQUAL
   T_SR_EQUAL
 %left '?' ':'
 %right T_COALESCE
 %left T_BOOLEAN_OR
 %left T_BOOLEAN_AND
 %left '|'
 %left '^'
 %left '&'
 %nonassoc T_IS_EQUAL T_IS_NOT_EQUAL T_IS_IDENTICAL T_IS_NOT_IDENTICAL
   T_SPACESHIP
 %nonassoc '<' T_IS_SMALLER_OR_EQUAL '>' T_IS_GREATER_OR_EQUAL
 %left T_SL T_SR
 %left '+' '-' '.'
 %left '*' '/' '%'
 %precedence '!'
 %precedence T_INSTANCEOF
 %precedence '~' T_INC
 %token T_DEC
 %precedence T_INT_CAST T_DOUBLE_CAST T_STRING_CAST
 %token T_UNICODE_CAST
 %token T_BINARY_CAST
 %precedence T_ARRAY_CAST T_OBJECT_CAST T_BOOL_CAST T_UNSET_CAST '@'
 %token '['
 %token T_NEW
 %precedence T_CLONE
 %token T_EXIT
 %token T_IF
 %token T_ELSEIF
 %token T_ELSE
 %token T_ENDIF
 
 %token T_LNUMBER
 %token T_DNUMBER
 %token T_STRING
 %token T_STRING_VARNAME /* unused in XHP: `foo` in `"$foo"` */
 %token T_VARIABLE
 %token T_NUM_STRING /* unused in XHP: `0` in `"$foo[0]"` */
 %token T_INLINE_HTML
 %token T_CHARACTER /* unused in vanilla PHP */
 %token T_BAD_CHARACTER /* unused in vanilla PHP */
 %token T_ENCAPSED_AND_WHITESPACE /* unused in XHP: ` ` in `" "` */
 %token T_CONSTANT_ENCAPSED_STRING /* overloaded in XHP;
   replaces '"' encaps_list '"' */
 %token T_BACKTICKS_EXPR /* new in XHP; replaces '`' backticks_expr '`' */
 %token T_ECHO
 %token T_DO
 %token T_WHILE
 %token T_ENDWHILE
 %token T_FOR
 %token T_ENDFOR
 %token T_FOREACH
 %token T_ENDFOREACH
 %token T_DECLARE
 %token T_ENDDECLARE
 %token T_AS
 %token T_SWITCH
 %token T_ENDSWITCH
 %token T_CASE
 %token T_DEFAULT
 %token T_BREAK
 %token T_CONTINUE
 %token T_GOTO
 %token T_FUNCTION
 %token T_CONST
 %token T_RETURN
 %token T_TRY
 %token T_CATCH
 %token T_THROW
 %token T_USE
 %token T_GLOBAL
 %token T_STATIC
 %token T_ABSTRACT
 %token T_FINAL
 %token T_PRIVATE
 %token T_PROTECTED
 %token T_PUBLIC
 %token T_VAR
 %token T_UNSET
 %token T_ISSET
 %token T_EMPTY
 %token T_HALT_COMPILER
 %token T_CLASS
 %token T_INTERFACE
 %token T_EXTENDS
 %token T_IMPLEMENTS
 %token T_OBJECT_OPERATOR
 %token T_DOUBLE_ARROW
 %token T_LIST
 %token T_ARRAY
 %token T_CLASS_C
 %token T_METHOD_C
 %token T_FUNC_C
 %token T_LINE
 %token T_FILE
 %token T_COMMENT
 %token T_DOC_COMMENT
 %token T_OPEN_TAG
 %token T_OPEN_TAG_WITH_ECHO
 %token T_OPEN_TAG_FAKE
 %token T_CLOSE_TAG
 %token T_WHITESPACE
 %token T_START_HEREDOC /* unused in XHP; replaced with T_HEREDOC */
 %token T_END_HEREDOC /* unused in XHP; replaced with T_HEREDOC */
 %token T_HEREDOC /* new in XHP;
   replaces start_heredoc encaps_list T_END_HEREDOC */
 %token T_DOLLAR_OPEN_CURLY_BRACES /* unused in XHP: `${` in `"${foo}"` */
 %token T_CURLY_OPEN /* unused in XHP: `{$` in `"{$foo}"` */
 %token T_PAAMAYIM_NEKUDOTAYIM
 %token T_BINARY_DOUBLE /* unsused in XHP: `b"` in `b"foo"` */
 %token T_BINARY_HEREDOC /* unsused in XHP: `b<<<` in `b<<<FOO` */
 %token T_NAMESPACE
 %token T_NS_C
 %token T_DIR
 %token T_NS_SEPARATOR
 %token T_INSTEADOF
 %token T_CALLABLE
 %token T_TRAIT
 %token T_TRAIT_C
 %token T_YIELD
 %token T_FINALLY
 %token T_ELLIPSIS
 
 %%
 
 start:
   top_statement_list {
     *root = NNEW(n_PROGRAM)->appendChild($1);
   }
 ;
 
 top_statement_list:
   top_statement_list top_statement {
     $$ = $1->appendChild($2);
   }
 | %empty {
     $$ = NNEW(n_STATEMENT_LIST);
   }
 ;
 
 namespace_name:
   T_STRING {
     $$ = NTYPE($1, n_SYMBOL_NAME);
   }
 | namespace_name T_NS_SEPARATOR T_STRING {
     $$ = NMORE($1, $3);
   }
 ;
 
 top_statement:
   statement
 | function_declaration_statement
 | class_declaration_statement
 | T_HALT_COMPILER '(' ')' ';' {
     $1 = NSPAN($1, n_HALT_COMPILER, $3);
     $$ = NNEW(n_STATEMENT)->appendChild($1);
     NMORE($$, $4);
   }
 | T_NAMESPACE namespace_name ';' {
     NSPAN($1, n_NAMESPACE, $2);
     $1->appendChild($2);
     $1->appendChild(NNEW(n_EMPTY));
     $$ = NNEW(n_STATEMENT)->appendChild($1);
     NMORE($$, $3);
   }
 | T_NAMESPACE namespace_name '{' top_statement_list '}' {
   NSPAN($1, n_NAMESPACE, $5);
   $1->appendChild($2);
   $1->appendChild(NEXPAND($3, $4, $5));
   $$ = NNEW(n_STATEMENT)->appendChild($1);
   }
 | T_NAMESPACE '{' top_statement_list '}' {
   NSPAN($1, n_NAMESPACE, $4);
   $1->appendChild(NNEW(n_EMPTY));
   NMORE($3, $4);
   NMORE($3, $2);
   $1->appendChild($3);
   $$ = NNEW(n_STATEMENT)->appendChild($1);
   }
 | T_USE use_declarations ';' {
   NMORE($2, $1);
   $$ = NNEW(n_STATEMENT)->appendChild($2);
   NMORE($$, $3);
   }
 | constant_declaration ';' {
   $$ = NNEW(n_STATEMENT)->appendChild($1);
   NMORE($$, $2);
   }
 ;
 
 use_declarations:
   use_declarations ',' use_declaration {
     $$ = $1->appendChild($3);
   }
 | use_declaration {
     $$ = NNEW(n_USE_LIST);
     $$->appendChild($1);
   }
 ;
 
 use_declaration:
   namespace_name {
     $$ = NNEW(n_USE);
     $$->appendChild($1);
     $$->appendChild(NNEW(n_EMPTY));
   }
 | namespace_name T_AS T_STRING {
     $$ = NNEW(n_USE);
     $$->appendChild($1);
     NTYPE($3, n_STRING);
     $$->appendChild($3);
   }
 | T_NS_SEPARATOR namespace_name {
     $$ = NNEW(n_USE);
     NMORE($2, $1);
     $$->appendChild($2);
     $$->appendChild(NNEW(n_EMPTY));
   }
 | T_NS_SEPARATOR namespace_name T_AS T_STRING {
     $$ = NNEW(n_USE);
     NMORE($2, $1);
     $$->appendChild($2);
     NTYPE($4, n_STRING);
     $$->appendChild($4);
   }
 ;
 
 constant_declaration:
   constant_declaration ',' T_STRING '=' static_scalar {
     NMORE($$, $5);
     $$->appendChild(
       NNEW(n_CONSTANT_DECLARATION)
         ->appendChild(NTYPE($3, n_STRING))
         ->appendChild($5));
   }
 | T_CONST T_STRING '=' static_scalar {
     NSPAN($$, n_CONSTANT_DECLARATION_LIST, $4);
     $$->appendChild(
       NNEW(n_CONSTANT_DECLARATION)
         ->appendChild(NTYPE($2, n_STRING))
         ->appendChild($4));
   }
 ;
 
 inner_statement_list:
   inner_statement_list inner_statement {
     $$ = $1->appendChild($2);
   }
 | %empty {
     $$ = NNEW(n_STATEMENT_LIST);
   }
 ;
 
 inner_statement:
   statement
 | function_declaration_statement
 | class_declaration_statement
 | T_HALT_COMPILER '(' ')' ';' {
   $1 = NSPAN($1, n_HALT_COMPILER, $3);
   $$ = NNEW(n_STATEMENT)->appendChild($1);
   NMORE($$, $4);
   }
 ;
 
 statement:
   unticked_statement
 | T_STRING ':' {
     NTYPE($1, n_STRING);
     $$ = NNEW(n_LABEL);
     $$->appendChild($1);
     NMORE($$, $2);
   }
 | T_OPEN_TAG {
     $$ = NTYPE($1, n_OPEN_TAG);
   }
 | T_OPEN_TAG_WITH_ECHO {
     $$ = NTYPE($1, n_OPEN_TAG);
   }
 | T_CLOSE_TAG {
     $$ = NTYPE($1, n_CLOSE_TAG);
   }
 ;
 
 unticked_statement:
   '{' inner_statement_list '}' {
     $$ = NEXPAND($1, $2, $3);
   }
 | T_IF '(' expr ')' statement elseif_list else_single {
     $$ = NNEW(n_CONDITION_LIST);
 
     $1 = NTYPE($1, n_IF);
     $1->appendChild(NSPAN($2, n_CONTROL_CONDITION, $4)->appendChild($3));
     $1->appendChild($5);
 
     $$->appendChild($1);
     $$->appendChildren($6);
 
     // Hacks: merge a list of if (x) { } else if (y) { } into a single condition
     // list instead of a condition tree.
 
     if ($7->type == n_EMPTY) {
       // Ignore.
     } else if ($7->type == n_ELSE) {
       xhpast::Node *stype = $7->firstChild()->firstChild();
       if (stype && stype->type == n_CONDITION_LIST) {
         NTYPE(stype->firstChild(), n_ELSEIF);
         stype->firstChild()->l_tok = $7->l_tok;
         $$->appendChildren(stype);
       } else {
         $$->appendChild($7);
       }
     } else {
       $$->appendChild($7);
     }
 
     $$ = NNEW(n_STATEMENT)->appendChild($$);
   }
 | T_IF '(' expr ')' ':'
   inner_statement_list
   new_elseif_list
   new_else_single
   T_ENDIF ';' {
 
     $$ = NNEW(n_CONDITION_LIST);
     NTYPE($1, n_IF);
     $1->appendChild(NSPAN($2, n_CONTROL_CONDITION, $4)->appendChild($3));
     $1->appendChild($6);
 
     $$->appendChild($1);
     $$->appendChildren($7);
     $$->appendChild($8);
     NMORE($$, $9);
 
     $$ = NNEW(n_STATEMENT)->appendChild($$);
     NMORE($$, $10);
   }
 | T_WHILE '(' expr ')' while_statement {
     NTYPE($1, n_WHILE);
     $1->appendChild(NSPAN($2, n_CONTROL_CONDITION, $4)->appendChild($3));
     $1->appendChild($5);
 
     $$ = NNEW(n_STATEMENT)->appendChild($1);
   }
 | T_DO statement T_WHILE '(' expr ')' ';' {
     NTYPE($1, n_DO_WHILE);
     $1->appendChild($2);
     $1->appendChild(NSPAN($4, n_CONTROL_CONDITION, $6)->appendChild($5));
 
     $$ = NNEW(n_STATEMENT)->appendChild($1);
     NMORE($$, $7);
   }
 | T_FOR '(' for_expr ';' for_expr ';' for_expr ')' for_statement {
     NTYPE($1, n_FOR);
 
     NSPAN($2, n_FOR_EXPRESSION, $8)
       ->appendChild($3)
       ->appendChild($5)
       ->appendChild($7);
 
     $1->appendChild($2);
     $1->appendChild($9);
 
     $$ = NNEW(n_STATEMENT)->appendChild($1);
   }
 | T_SWITCH '(' expr ')' switch_case_list {
     NTYPE($1, n_SWITCH);
     $1->appendChild(NSPAN($2, n_CONTROL_CONDITION, $4)->appendChild($3));
     $1->appendChild($5);
 
     $$ = NNEW(n_STATEMENT)->appendChild($1);
   }
 | T_BREAK ';' {
     NTYPE($1, n_BREAK);
     $1->appendChild(NNEW(n_EMPTY));
 
     $$ = NNEW(n_STATEMENT)->appendChild($1);
     NMORE($$, $2);
   }
 | T_BREAK expr ';' {
     NTYPE($1, n_BREAK);
     $1->appendChild($2);
 
     $$ = NNEW(n_STATEMENT)->appendChild($1);
     NMORE($$, $3);
   }
 | T_CONTINUE ';' {
     NTYPE($1, n_CONTINUE);
     $1->appendChild(NNEW(n_EMPTY));
 
     $$ = NNEW(n_STATEMENT)->appendChild($1);
     NMORE($$, $2);
   }
 | T_CONTINUE expr ';' {
     NTYPE($1, n_CONTINUE);
     $1->appendChild($2);
 
     $$ = NNEW(n_STATEMENT)->appendChild($1);
     NMORE($$, $3);
   }
 | T_RETURN ';' {
     NTYPE($1, n_RETURN);
     $1->appendChild(NNEW(n_EMPTY));
 
     $$ = NNEW(n_STATEMENT)->appendChild($1);
     NMORE($$, $2);
   }
 | T_RETURN expr_without_variable ';' {
     NTYPE($1, n_RETURN);
     $1->appendChild($2);
 
     $$ = NNEW(n_STATEMENT)->appendChild($1);
     NMORE($$, $3);
   }
 | T_RETURN variable ';' {
     NTYPE($1, n_RETURN);
     $1->appendChild($2);
 
     $$ = NNEW(n_STATEMENT)->appendChild($1);
     NMORE($$, $3);
   }
 | T_GLOBAL global_var_list ';' {
     NMORE($2, $1);
     $$ = NNEW(n_STATEMENT)->appendChild($2);
     NMORE($$, $3);
   }
 | T_STATIC static_var_list ';' {
     NMORE($2, $1);
     $$ = NNEW(n_STATEMENT)->appendChild($2);
     NMORE($$, $3);
   }
 | T_ECHO echo_expr_list ';' {
     NMORE($2, $1);
     $$ = NNEW(n_STATEMENT)->appendChild($2);
     NMORE($$, $3);
   }
 | T_INLINE_HTML {
     NTYPE($1, n_INLINE_HTML);
     $$ = $1;
   }
 | expr ';' {
     $$ = NNEW(n_STATEMENT)->appendChild($1);
     NMORE($$, $2);
   }
 | yield_expr ';' {
     $$ = NNEW(n_STATEMENT)->appendChild($1);
     NMORE($$, $2);
   }
 | T_UNSET '(' unset_variables ')' ';' {
     NMORE($3, $4);
     NMORE($3, $1);
     $$ = NNEW(n_STATEMENT)->appendChild($3);
     NMORE($$, $5);
   }
 | T_FOREACH '(' variable T_AS foreach_variable foreach_optional_arg ')'
   foreach_statement {
     NTYPE($1, n_FOREACH);
     NSPAN($2, n_FOREACH_EXPRESSION, $7);
     $2->appendChild($3);
     if ($6->type == n_EMPTY) {
       $2->appendChild($6);
       $2->appendChild($5);
     } else {
       $2->appendChild($5);
       $2->appendChild($6);
     }
     $1->appendChild($2);
 
     $1->appendChild($8);
 
     $$ = NNEW(n_STATEMENT)->appendChild($1);
   }
 | T_FOREACH '(' expr_without_variable T_AS variable foreach_optional_arg ')'
   foreach_statement {
     NTYPE($1, n_FOREACH);
     NSPAN($2, n_FOREACH_EXPRESSION, $7);
     $2->appendChild($3);
     if ($6->type == n_EMPTY) {
       $2->appendChild($6);
       $2->appendChild($5);
     } else {
       $2->appendChild($5);
       $2->appendChild($6);
     }
     $1->appendChild($2);
     $1->appendChild($8);
 
     $$ = NNEW(n_STATEMENT)->appendChild($1);
   }
 | T_DECLARE '(' declare_list ')' declare_statement {
     NTYPE($1, n_DECLARE);
     $1->appendChild($3);
     $1->appendChild($5);
     $$ = NNEW(n_STATEMENT)->appendChild($1);
   }
 | ';' /* empty statement */ {
     $$ = NNEW(n_STATEMENT)->appendChild(NNEW(n_EMPTY));
     NMORE($$, $1);
   }
 | T_TRY '{' inner_statement_list '}' catch_list finally_statement {
     NTYPE($1, n_TRY);
     $1->appendChild(NEXPAND($2, $3, $4));
 
     $1->appendChild($5);
     $1->appendChild($6);
 
     $$ = NNEW(n_STATEMENT)->appendChild($1);
   }
 | T_TRY '{' inner_statement_list '}' non_empty_finally_statement {
     NTYPE($1, n_TRY);
     $1->appendChild(NEXPAND($2, $3, $4));
 
     $1->appendChild(NNEW(n_CATCH_LIST));
     $1->appendChild($5);
 
     $$ = NNEW(n_STATEMENT)->appendChild($1);
   }
 | T_THROW expr ';' {
   NTYPE($1, n_THROW);
   $1->appendChild($2);
 
   $$ = NNEW(n_STATEMENT)->appendChild($1);
   NMORE($$, $3);
 
   }
 | T_GOTO T_STRING ';' {
   NTYPE($1, n_GOTO);
   NTYPE($2, n_STRING);
   $1->appendChild($2);
 
   $$ = NNEW(n_STATEMENT)->appendChild($1);
   NMORE($$, $3);
   }
 ;
 
 catch_list:
   catch_list catch {
     $1->appendChild($2);
     $$ = $1;
   }
 | catch {
   $$ = NNEW(n_CATCH_LIST);
   $$->appendChild($1);
 }
 
 catch:
   T_CATCH '(' fully_qualified_class_name T_VARIABLE ')'
   '{' inner_statement_list '}' {
     NTYPE($1, n_CATCH);
     $1->appendChild($3);
     $1->appendChild(NTYPE($4, n_VARIABLE));
     $1->appendChild(NEXPAND($6, $7, $8));
     NMORE($1, $8);
     $$ = $1;
   }
 ;
 
 finally_statement:
   %empty {
     $$ = NNEW(n_EMPTY);
   }
 | non_empty_finally_statement
 ;
 
 non_empty_finally_statement:
   T_FINALLY '{' inner_statement_list '}' {
     NTYPE($1, n_FINALLY);
     $1->appendChild($3);
     NMORE($1, $4);
     $$ = $1;
   }
 ;
 
 unset_variables:
   unset_variable {
     $$ = NNEW(n_UNSET_LIST);
     $$->appendChild($1);
   }
 | unset_variables ',' unset_variable {
     $1->appendChild($3);
     $$ = $1;
   }
 ;
 
 unset_variable:
   variable
 ;
 
 function_declaration_statement:
   unticked_function_declaration_statement
 ;
 
 class_declaration_statement:
   unticked_class_declaration_statement
 ;
 
 is_reference:
   %empty {
     $$ = NNEW(n_EMPTY);
   }
 | '&' {
     $$ = NTYPE($1, n_REFERENCE);
   }
 ;
 
 unticked_function_declaration_statement:
   function is_reference T_STRING
   '(' parameter_list ')' return_type '{' inner_statement_list '}' {
     NSPAN($1, n_FUNCTION_DECLARATION, $9);
     $1->appendChild(NNEW(n_EMPTY));
     $1->appendChild($2);
     $1->appendChild(NTYPE($3, n_STRING));
     $1->appendChild(NEXPAND($4, $5, $6));
     $1->appendChild(NNEW(n_EMPTY));
     $1->appendChild($7);
     $1->appendChild(NEXPAND($8, $9, $10));
 
     $$ = NNEW(n_STATEMENT)->appendChild($1);
   }
 ;
 
 unticked_class_declaration_statement:
   class_entry_type T_STRING extends_from implements_list
   '{' class_statement_list '}' {
     $$ = NNEW(n_CLASS_DECLARATION);
     $$->appendChild($1);
     $$->appendChild(NTYPE($2, n_CLASS_NAME));
     $$->appendChild($3);
     $$->appendChild($4);
     $$->appendChild(NEXPAND($5, $6, $7));
     NMORE($$, $7);
 
     $$ = NNEW(n_STATEMENT)->appendChild($$);
   }
 | interface_entry T_STRING interface_extends_list '{' class_statement_list '}' {
     $$ = NNEW(n_INTERFACE_DECLARATION);
     $$->appendChild(NNEW(n_CLASS_ATTRIBUTES));
     NMORE($$, $1);
     $$->appendChild(NTYPE($2, n_CLASS_NAME));
     $$->appendChild($3);
     $$->appendChild(NNEW(n_EMPTY));
     $$->appendChild(NEXPAND($4, $5, $6));
     NMORE($$, $6);
 
     $$ = NNEW(n_STATEMENT)->appendChild($$);
   }
 ;
 
 class_entry_type:
   T_CLASS {
     NTYPE($1, n_CLASS_ATTRIBUTES);
     $$ = $1;
   }
 | T_ABSTRACT T_CLASS {
     NTYPE($2, n_CLASS_ATTRIBUTES);
     NMORE($2, $1);
     $2->appendChild(NTYPE($1, n_STRING));
 
     $$ = $2;
   }
 | T_FINAL T_CLASS {
     NTYPE($2, n_CLASS_ATTRIBUTES);
     NMORE($2, $1);
     $2->appendChild(NTYPE($1, n_STRING));
 
     $$ = $2;
   }
 | T_TRAIT {
     $$ = NNEW(n_CLASS_ATTRIBUTES);
     $$->appendChild(NTYPE($1, n_STRING));
   }
 ;
 
 extends_from:
   %empty {
     $$ = NNEW(n_EMPTY);
   }
 | T_EXTENDS fully_qualified_class_name {
     $$ = NTYPE($1, n_EXTENDS_LIST)->appendChild($2);
   }
 ;
 
 interface_entry:
   T_INTERFACE
 ;
 
 interface_extends_list:
   %empty {
     $$ = NNEW(n_EMPTY);
   }
 | T_EXTENDS interface_list {
     NTYPE($1, n_EXTENDS_LIST);
     $1->appendChildren($2);
     $$ = $1;
   }
 ;
 
 implements_list:
   %empty {
     $$ = NNEW(n_EMPTY);
   }
 | T_IMPLEMENTS interface_list {
     NTYPE($1, n_IMPLEMENTS_LIST);
     $1->appendChildren($2);
     $$ = $1;
   }
 ;
 
 interface_list:
   fully_qualified_class_name {
     $$ = NNEW(n_IMPLEMENTS_LIST)->appendChild($1);
   }
 | interface_list ',' fully_qualified_class_name {
     $$ = $1->appendChild($3);
   }
 ;
 
 foreach_optional_arg:
   %empty {
     $$ = NNEW(n_EMPTY);
   }
 | T_DOUBLE_ARROW foreach_variable {
     $$ = $2;
   }
 ;
 
 foreach_variable:
   variable
 | '&' variable {
     NTYPE($1, n_VARIABLE_REFERENCE);
     $1->appendChild($2);
     $$ = $1;
   }
 ;
 
 for_statement:
   statement
 | ':' inner_statement_list T_ENDFOR ';' {
   NMORE($2, $1);
   NMORE($2, $4);
   $$ = $2;
   }
 ;
 
 foreach_statement:
   statement
 | ':' inner_statement_list T_ENDFOREACH ';' {
   NMORE($2, $1);
   NMORE($2, $4);
   $$ = $2;
   }
 ;
 
 declare_statement:
   statement
 | ':' inner_statement_list T_ENDDECLARE ';' {
   NMORE($2, $1);
   NMORE($2, $4);
   $$ = $2;
   }
 ;
 
 declare_list:
   T_STRING '=' static_scalar {
     $$ = NNEW(n_DECLARE_DECLARATION);
     $$->appendChild(NTYPE($1, n_STRING));
     $$->appendChild($3);
     $$ = NNEW(n_DECLARE_DECLARATION_LIST)->appendChild($$);
   }
 | declare_list ',' T_STRING '=' static_scalar {
     $$ = NNEW(n_DECLARE_DECLARATION);
     $$->appendChild(NTYPE($3, n_STRING));
     $$->appendChild($5);
 
     $1->appendChild($$);
     $$ = $1;
   }
 ;
 
 switch_case_list:
   '{' case_list '}' {
     $$ = NEXPAND($1, $2, $3);
   }
 | '{' ';' case_list '}' {
     // ...why does this rule exist?
 
     NTYPE($2, n_STATEMENT);
     $1->appendChild(NNEW(n_EMPTY));
 
     $$ = NNEW(n_STATEMENT_LIST)->appendChild($2);
     $$->appendChildren($3);
     NEXPAND($1, $$, $4);
   }
 | ':' case_list T_ENDSWITCH ';' {
     NMORE($2, $4);
     NMORE($2, $1);
     $$ = $2;
   }
 | ':' ';' case_list T_ENDSWITCH ';' {
     NTYPE($2, n_STATEMENT);
     $1->appendChild(NNEW(n_EMPTY));
 
     $$ = NNEW(n_STATEMENT_LIST)->appendChild($2);
     $$->appendChildren($3);
     NMORE($$, $5);
     NMORE($$, $1);
   }
 ;
 
 case_list:
   %empty {
     $$ = NNEW(n_STATEMENT_LIST);
   }
 | case_list T_CASE expr case_separator inner_statement_list {
     NTYPE($2, n_CASE);
     $2->appendChild($3);
     $2->appendChild($5);
 
     $1->appendChild($2);
     $$ = $1;
   }
 | case_list T_DEFAULT case_separator inner_statement_list {
     NTYPE($2, n_DEFAULT);
     $2->appendChild($4);
 
     $1->appendChild($2);
     $$ = $1;
   }
 ;
 
 case_separator:
   ':'
 | ';'
 ;
 
 while_statement:
   statement
 | ':' inner_statement_list T_ENDWHILE ';' {
   NMORE($2, $4);
   NMORE($2, $1);
   $$ = $2;
   }
 ;
 
 elseif_list:
   %empty {
     $$ = NNEW(n_CONDITION_LIST);
   }
 | elseif_list T_ELSEIF '(' expr ')' statement {
     NTYPE($2, n_ELSEIF);
     $2->appendChild(NSPAN($3, n_CONTROL_CONDITION, $5)->appendChild($4));
     $2->appendChild($6);
 
     $$ = $1->appendChild($2);
   }
 ;
 
 new_elseif_list:
   %empty {
     $$ = NNEW(n_CONDITION_LIST);
   }
 | new_elseif_list T_ELSEIF '(' expr ')' ':' inner_statement_list {
     NTYPE($2, n_ELSEIF);
     $2->appendChild($4);
     $2->appendChild($7);
 
     $$ = $1->appendChild($2);
   }
 ;
 
 else_single:
   %empty {
     $$ = NNEW(n_EMPTY);
   }
 | T_ELSE statement {
     NTYPE($1, n_ELSE);
     $1->appendChild($2);
     $$ = $1;
   }
 ;
 
 new_else_single:
   %empty {
     $$ = NNEW(n_EMPTY);
   }
 | T_ELSE ':' inner_statement_list {
     NTYPE($1, n_ELSE);
     $1->appendChild($3);
     $$ = $1;
   }
 ;
 
 parameter_list:
   non_empty_parameter_list
 | %empty {
     $$ = NNEW(n_DECLARATION_PARAMETER_LIST);
   }
 ;
 
 non_empty_parameter_list:
   optional_type parameter {
     $$ = NNEW(n_DECLARATION_PARAMETER);
     $$->appendChild($1);
     $$->appendChild($2);
     $$->appendChild(NNEW(n_EMPTY));
 
     $$ = NNEW(n_DECLARATION_PARAMETER_LIST)->appendChild($$);
   }
 | optional_type '&' parameter {
     $$ = NNEW(n_DECLARATION_PARAMETER);
     $$->appendChild($1);
     $$->appendChild(NTYPE($2, n_VARIABLE_REFERENCE));
       $2->appendChild($3);
     $$->appendChild(NNEW(n_EMPTY));
 
     $$ = NNEW(n_DECLARATION_PARAMETER_LIST)->appendChild($$);
   }
 | optional_type '&' parameter '=' static_scalar {
     $$ = NNEW(n_DECLARATION_PARAMETER);
     $$->appendChild($1);
     $$->appendChild(NTYPE($2, n_VARIABLE_REFERENCE));
       $2->appendChild($3);
     $$->appendChild($5);
 
     $$ = NNEW(n_DECLARATION_PARAMETER_LIST)->appendChild($$);
   }
 | optional_type parameter '=' static_scalar {
     $$ = NNEW(n_DECLARATION_PARAMETER);
     $$->appendChild($1);
     $$->appendChild($2);
     $$->appendChild($4);
 
     $$ = NNEW(n_DECLARATION_PARAMETER_LIST)->appendChild($$);
   }
 | non_empty_parameter_list ',' optional_type parameter {
     $$ = NNEW(n_DECLARATION_PARAMETER);
     $$->appendChild($3);
     $$->appendChild($4);
     $$->appendChild(NNEW(n_EMPTY));
 
     $$ = $1->appendChild($$);
   }
 | non_empty_parameter_list ',' optional_type '&' parameter {
     $$ = NNEW(n_DECLARATION_PARAMETER);
     $$->appendChild($3);
     $$->appendChild(NTYPE($4, n_VARIABLE_REFERENCE));
       $4->appendChild($5);
     $$->appendChild(NNEW(n_EMPTY));
 
     $$ = $1->appendChild($$);
   }
 | non_empty_parameter_list ',' optional_type '&'
   parameter '=' static_scalar {
     $$ = NNEW(n_DECLARATION_PARAMETER);
     $$->appendChild($3);
     $$->appendChild(NTYPE($4, n_VARIABLE_REFERENCE));
       $4->appendChild($5);
     $$->appendChild($7);
 
     $$ = $1->appendChild($$);
   }
 | non_empty_parameter_list ',' optional_type
   parameter '=' static_scalar {
     $$ = NNEW(n_DECLARATION_PARAMETER);
     $$->appendChild($3);
     $$->appendChild($4);
     $$->appendChild($6);
 
     $$ = $1->appendChild($$);
   }
 ;
 
 parameter:
   T_ELLIPSIS T_VARIABLE {
     $$ = NTYPE($1, n_UNPACK);
     $$->appendChild(NTYPE($2, n_VARIABLE));
   }
 | T_VARIABLE {
     $$ = NTYPE($1, n_VARIABLE);
   }
 ;
 
 optional_type:
   %empty {
     $$ = NNEW(n_EMPTY);
   }
 | type
+| '?' type {
+    $$ = NNEW(n_NULLABLE_TYPE);
+    $$->appendChild($2);
+  }
 ;
 
 type:
   fully_qualified_class_name {
     $$ = $1;
   }
 | T_ARRAY {
     $$ = NTYPE($1, n_TYPE_NAME);
   }
 | T_CALLABLE {
     $$ = NTYPE($1, n_TYPE_NAME);
   }
 ;
 
 return_type:
   %empty {
     $$ = NNEW(n_EMPTY);
   }
-| ':' '?' type {
+| ':' optional_type {
     $$ = NNEW(n_DECLARATION_RETURN);
     $$->appendChild($2);
-    $$->appendChild($3);
-  }
-| ':' type {
-    $$ = NNEW(n_DECLARATION_RETURN);
-    $$->appendChild(NNEW(n_EMPTY));
-    $$->appendChild($2);
   }
 ;
 
 function_call_parameter_list:
   non_empty_function_call_parameter_list
 | %empty {
     $$ = NNEW(n_CALL_PARAMETER_LIST);
   }
 ;
 
 non_empty_function_call_parameter_list:
   argument {
     $$ = NNEW(n_CALL_PARAMETER_LIST)->appendChild($1);
   }
 | non_empty_function_call_parameter_list ',' argument {
     $$ = $1->appendChild($3);
   }
 ;
 
 argument:
   expr
 | T_ELLIPSIS expr {
     $$ = NNEW(n_UNPACK)->appendChild($1);
   }
 | '&' w_variable {
     NTYPE($1, n_VARIABLE_REFERENCE);
     $$ = $1->appendChild($2);
   }
 ;
 
 global_var_list:
   global_var_list ',' global_var {
     $1->appendChild($3);
     $$ = $1;
   }
 | global_var {
     $$ = NNEW(n_GLOBAL_DECLARATION_LIST);
     $$->appendChild($1);
   }
 ;
 
 global_var:
   T_VARIABLE {
     $$ = NTYPE($1, n_VARIABLE);
   }
 | '$' r_variable {
     $$ = NTYPE($1, n_VARIABLE_VARIABLE);
     $$->appendChild($2);
   }
 | '$' '{' expr '}' {
     $$ = NTYPE($1, n_VARIABLE_VARIABLE);
     $$->appendChild($3);
   }
 ;
 
 static_var_list:
   static_var_list ',' T_VARIABLE {
     NTYPE($3, n_VARIABLE);
     $$ = NNEW(n_STATIC_DECLARATION);
     $$->appendChild($3);
     $$->appendChild(NNEW(n_EMPTY));
 
     $$ = $1->appendChild($$);
   }
 | static_var_list ',' T_VARIABLE '=' static_scalar {
     NTYPE($3, n_VARIABLE);
     $$ = NNEW(n_STATIC_DECLARATION);
     $$->appendChild($3);
     $$->appendChild($5);
 
     $$ = $1->appendChild($$);
   }
 | T_VARIABLE {
     NTYPE($1, n_VARIABLE);
     $$ = NNEW(n_STATIC_DECLARATION);
     $$->appendChild($1);
     $$->appendChild(NNEW(n_EMPTY));
 
     $$ = NNEW(n_STATIC_DECLARATION_LIST)->appendChild($$);
   }
 | T_VARIABLE '=' static_scalar {
     NTYPE($1, n_VARIABLE);
     $$ = NNEW(n_STATIC_DECLARATION);
     $$->appendChild($1);
     $$->appendChild($3);
 
     $$ = NNEW(n_STATIC_DECLARATION_LIST)->appendChild($$);
   }
 ;
 
 class_statement_list:
   class_statement_list class_statement {
     $$ = $1->appendChild($2);
   }
 | %empty {
     $$ = NNEW(n_STATEMENT_LIST);
   }
 ;
 
 class_statement:
   variable_modifiers class_variable_declaration ';' {
     $$ = NNEW(n_CLASS_MEMBER_DECLARATION_LIST);
     $$->appendChild($1);
     $$->appendChildren($2);
 
     $$ = NNEW(n_STATEMENT)->appendChild($$);
     NMORE($$, $3);
   }
 | class_constant_declaration ';' {
     $$ = NNEW(n_STATEMENT)->appendChild($1);
     NMORE($$, $2);
   }
 | trait_use_statement {
     $$ = $1;
   }
 | method_modifiers function {
     /* empty */
   } is_reference T_STRING '(' parameter_list ')' return_type method_body {
     $$ = NNEW(n_METHOD_DECLARATION);
     NMORE($$, $2);
     $$->appendChild($1);
     $$->appendChild($4);
     $$->appendChild(NTYPE($5, n_STRING));
     $$->appendChild(NEXPAND($6, $7, $8));
     $$->appendChild(NNEW(n_EMPTY));
     $$->appendChild($9);
     $$->appendChild($10);
 
     $$ = NNEW(n_STATEMENT)->appendChild($$);
   }
 ;
 
 trait_use_statement:
   T_USE trait_list trait_adaptations {
     $$ = NTYPE($1, n_TRAIT_USE);
     $$->appendChildren($2);
     $$->appendChild($3);
   }
 ;
 
 trait_list:
   fully_qualified_class_name {
     $$ = NNEW(n_TRAIT_USE_LIST)->appendChild($1);
   }
 | trait_list ',' fully_qualified_class_name {
     $$ = $1->appendChild($3);
   }
 ;
 
 trait_adaptations:
   ';' {
     $$ = NNEW(n_EMPTY);
   }
 | '{' trait_adaptation_list '}' {
     $$ = NEXPAND($1, $2, $3);
   }
 ;
 
 trait_adaptation_list:
   %empty {
     $$ = NNEW(n_TRAIT_ADAPTATION_LIST);
   }
 | non_empty_trait_adaptation_list {
     $$ = $1;
   }
 ;
 
 non_empty_trait_adaptation_list:
   trait_adaptation_statement {
     $$ = NNEW(n_TRAIT_ADAPTATION_LIST);
     $$->appendChild($1);
   }
 |  non_empty_trait_adaptation_list trait_adaptation_statement {
     $1->appendChild($2);
     $$ = $1;
   }
 ;
 
 trait_adaptation_statement:
   trait_precedence ';' {
     $$ = NMORE($1, $2);
   }
 |  trait_alias ';' {
     $$ = NMORE($1, $2);
   }
 ;
 
 trait_precedence:
   trait_method_reference_fully_qualified T_INSTEADOF trait_reference_list  {
     $$ = NNEW(n_TRAIT_INSTEADOF);
     $$->appendChild($1);
     $$->appendChild($3);
   }
 ;
 
 trait_reference_list:
   fully_qualified_class_name {
     $$ = NNEW(n_TRAIT_REFERENCE_LIST);
     $$->appendChild($1);
   }
 | trait_reference_list ',' fully_qualified_class_name  {
     $1->appendChild($3);
     $$ = $1;
   }
 ;
 
 trait_method_reference:
   T_STRING {
     $$ = NNEW(n_TRAIT_METHOD_REFERENCE);
     $$->appendChild(NTYPE($1, n_STRING));
   }
 |  trait_method_reference_fully_qualified {
     $$ = $1;
   }
 ;
 
 trait_method_reference_fully_qualified:
   fully_qualified_class_name T_PAAMAYIM_NEKUDOTAYIM T_STRING {
     NTYPE($2, n_TRAIT_METHOD_REFERENCE);
     NEXPAND($1, $2, NTYPE($3, n_STRING));
     $$ = $2;
   }
 ;
 
 trait_alias:
   trait_method_reference T_AS trait_modifiers T_STRING {
     $$ = NNEW(n_TRAIT_AS);
     $$->appendChild($1);
     $$->appendChild($3);
     $$->appendChild(NTYPE($4, n_STRING));
   }
 |  trait_method_reference T_AS member_modifier {
     $$ = NNEW(n_TRAIT_AS);
     $$->appendChild($1);
     $$->appendChild($3);
     $$->appendChild(NNEW(n_EMPTY));
   }
 ;
 
 trait_modifiers:
   %empty  {
     $$ = NNEW(n_EMPTY);
   }
 |  member_modifier  {
     $$ = NNEW(n_METHOD_MODIFIER_LIST);
     $$->appendChild(NTYPE($1, n_STRING));
   }
 ;
 
 
 method_body:
   ';' /* abstract method */ {
     $$ = NNEW(n_EMPTY);
   }
 | '{' inner_statement_list '}' {
     $$ = NEXPAND($1, $2, $3);
   }
 ;
 
 variable_modifiers:
   non_empty_member_modifiers
 | T_VAR {
     $$ = NNEW(n_CLASS_MEMBER_MODIFIER_LIST);
     $$->appendChild(NTYPE($1, n_STRING));
   }
 ;
 
 method_modifiers:
   %empty {
     $$ = NNEW(n_METHOD_MODIFIER_LIST);
   }
 | non_empty_member_modifiers {
     NTYPE($1, n_METHOD_MODIFIER_LIST);
     $$ = $1;
   }
 ;
 
 non_empty_member_modifiers:
   member_modifier {
     $$ = NNEW(n_CLASS_MEMBER_MODIFIER_LIST);
     $$->appendChild(NTYPE($1, n_STRING));
   }
 | non_empty_member_modifiers member_modifier {
     $$ = $1->appendChild(NTYPE($2, n_STRING));
   }
 ;
 
 member_modifier:
   T_PUBLIC
 | T_PROTECTED
 | T_PRIVATE
 | T_STATIC
 | T_ABSTRACT
 | T_FINAL
 ;
 
 class_variable_declaration:
   class_variable_declaration ',' T_VARIABLE {
     $$ = NNEW(n_CLASS_MEMBER_DECLARATION);
     $$->appendChild(NTYPE($3, n_VARIABLE));
     $$->appendChild(NNEW(n_EMPTY));
 
     $$ = $1->appendChild($$);
   }
 | class_variable_declaration ',' T_VARIABLE '=' static_scalar {
     $$ = NNEW(n_CLASS_MEMBER_DECLARATION);
     $$->appendChild(NTYPE($3, n_VARIABLE));
     $$->appendChild($5);
 
     $$ = $1->appendChild($$);
   }
 | T_VARIABLE {
     $$ = NNEW(n_CLASS_MEMBER_DECLARATION);
     $$->appendChild(NTYPE($1, n_VARIABLE));
     $$->appendChild(NNEW(n_EMPTY));
 
     $$ = NNEW(n_CLASS_MEMBER_DECLARATION_LIST)->appendChild($$);
   }
 | T_VARIABLE '=' static_scalar {
     $$ = NNEW(n_CLASS_MEMBER_DECLARATION);
     $$->appendChild(NTYPE($1, n_VARIABLE));
     $$->appendChild($3);
 
     $$ = NNEW(n_CLASS_MEMBER_DECLARATION_LIST)->appendChild($$);
   }
 ;
 
 class_constant_declaration:
   class_constant_declaration ',' T_STRING '=' static_scalar {
     $$ = NNEW(n_CLASS_CONSTANT_DECLARATION);
     $$->appendChild(NTYPE($3, n_STRING));
     $$->appendChild($5);
 
     $1->appendChild($$);
 
     $$ = $1;
   }
 | T_CONST T_STRING '=' static_scalar {
     NTYPE($1, n_CLASS_CONSTANT_DECLARATION_LIST);
     $$ = NNEW(n_CLASS_CONSTANT_DECLARATION);
     $$->appendChild(NTYPE($2, n_STRING));
     $$->appendChild($4);
     $1->appendChild($$);
 
     $$ = $1;
   }
 ;
 
 echo_expr_list:
   echo_expr_list ',' expr {
     $1->appendChild($3);
   }
 | expr {
     $$ = NNEW(n_ECHO_LIST);
     $$->appendChild($1);
   }
 ;
 
 for_expr:
   %empty {
     $$ = NNEW(n_EMPTY);
   }
 | non_empty_for_expr
 ;
 
 
 non_empty_for_expr:
   non_empty_for_expr ',' expr {
     $1->appendChild($3);
   }
 | expr {
     $$ = NNEW(n_EXPRESSION_LIST);
     $$->appendChild($1);
   }
 ;
 
 expr_without_variable:
   T_LIST '(' assignment_list ')' '=' expr {
     NTYPE($1, n_LIST);
     $1->appendChild(NEXPAND($2, $3, $4));
     $$ = NNEW(n_BINARY_EXPRESSION);
     $$->appendChild($1);
     $$->appendChild(NTYPE($5, n_OPERATOR));
     $$->appendChild($6);
   }
 | variable '=' expr {
     $$ = NNEW(n_BINARY_EXPRESSION);
     $$->appendChild($1);
     $$->appendChild(NTYPE($2, n_OPERATOR));
     $$->appendChild($3);
   }
 | variable '=' '&' variable {
     $$ = NNEW(n_BINARY_EXPRESSION);
     $$->appendChild($1);
     $$->appendChild(NTYPE($2, n_OPERATOR));
 
     NTYPE($3, n_VARIABLE_REFERENCE);
     $3->appendChild($4);
 
     $$->appendChild($3);
   }
 | variable '=' '&' T_NEW class_name_reference ctor_arguments {
     $$ = NNEW(n_BINARY_EXPRESSION);
     $$->appendChild($1);
     $$->appendChild(NTYPE($2, n_OPERATOR));
 
     NTYPE($4, n_NEW);
     $4->appendChild($5);
     $4->appendChild($6);
 
     NTYPE($3, n_VARIABLE_REFERENCE);
     $3->appendChild($4);
 
     $$->appendChild($3);
   }
 | T_CLONE expr {
     $$ = NNEW(n_UNARY_PREFIX_EXPRESSION);
     $$->appendChild(NTYPE($1, n_OPERATOR));
     $$->appendChild($2);
   }
 | variable T_PLUS_EQUAL expr {
     $$ = NNEW(n_BINARY_EXPRESSION);
     $$->appendChild($1);
     $$->appendChild(NTYPE($2, n_OPERATOR));
     $$->appendChild($3);
   }
 | variable T_MINUS_EQUAL expr {
     $$ = NNEW(n_BINARY_EXPRESSION);
     $$->appendChild($1);
     $$->appendChild(NTYPE($2, n_OPERATOR));
     $$->appendChild($3);
   }
 | variable T_MUL_EQUAL expr {
     $$ = NNEW(n_BINARY_EXPRESSION);
     $$->appendChild($1);
     $$->appendChild(NTYPE($2, n_OPERATOR));
     $$->appendChild($3);
   }
 | variable T_DIV_EQUAL expr {
     $$ = NNEW(n_BINARY_EXPRESSION);
     $$->appendChild($1);
     $$->appendChild(NTYPE($2, n_OPERATOR));
     $$->appendChild($3);
   }
 | variable T_CONCAT_EQUAL expr {
     $$ = NNEW(n_BINARY_EXPRESSION);
     $$->appendChild($1);
     $$->appendChild(NTYPE($2, n_OPERATOR));
     $$->appendChild($3);
   }
 | variable T_MOD_EQUAL expr {
     $$ = NNEW(n_BINARY_EXPRESSION);
     $$->appendChild($1);
     $$->appendChild(NTYPE($2, n_OPERATOR));
     $$->appendChild($3);
   }
 | variable T_AND_EQUAL expr {
     $$ = NNEW(n_BINARY_EXPRESSION);
     $$->appendChild($1);
     $$->appendChild(NTYPE($2, n_OPERATOR));
     $$->appendChild($3);
   }
 | variable T_OR_EQUAL expr {
     $$ = NNEW(n_BINARY_EXPRESSION);
     $$->appendChild($1);
     $$->appendChild(NTYPE($2, n_OPERATOR));
     $$->appendChild($3);
   }
 | variable T_XOR_EQUAL expr {
     $$ = NNEW(n_BINARY_EXPRESSION);
     $$->appendChild($1);
     $$->appendChild(NTYPE($2, n_OPERATOR));
     $$->appendChild($3);
   }
 | variable T_SL_EQUAL expr {
     $$ = NNEW(n_BINARY_EXPRESSION);
     $$->appendChild($1);
     $$->appendChild(NTYPE($2, n_OPERATOR));
     $$->appendChild($3);
   }
 | variable T_SR_EQUAL expr {
     $$ = NNEW(n_BINARY_EXPRESSION);
     $$->appendChild($1);
     $$->appendChild(NTYPE($2, n_OPERATOR));
     $$->appendChild($3);
   }
 | rw_variable T_INC {
     $$ = NNEW(n_UNARY_POSTFIX_EXPRESSION);
     $$->appendChild($1);
     $$->appendChild(NTYPE($2, n_OPERATOR));
   }
 | T_INC rw_variable {
     $$ = NNEW(n_UNARY_PREFIX_EXPRESSION);
     $$->appendChild(NTYPE($1, n_OPERATOR));
     $$->appendChild($2);
   }
 | rw_variable T_DEC {
     $$ = NNEW(n_UNARY_POSTFIX_EXPRESSION);
     $$->appendChild($1);
     $$->appendChild(NTYPE($2, n_OPERATOR));
   }
 | T_DEC rw_variable {
     $$ = NNEW(n_UNARY_PREFIX_EXPRESSION);
     $$->appendChild(NTYPE($1, n_OPERATOR));
     $$->appendChild($2);
   }
 | expr T_BOOLEAN_OR expr {
     $$ = NNEW(n_BINARY_EXPRESSION);
     $$->appendChild($1);
     $$->appendChild(NTYPE($2, n_OPERATOR));
     $$->appendChild($3);
   }
 | expr T_BOOLEAN_AND expr {
     $$ = NNEW(n_BINARY_EXPRESSION);
     $$->appendChild($1);
     $$->appendChild(NTYPE($2, n_OPERATOR));
     $$->appendChild($3);
   }
 | expr T_LOGICAL_OR expr {
     $$ = NNEW(n_BINARY_EXPRESSION);
     $$->appendChild($1);
     $$->appendChild(NTYPE($2, n_OPERATOR));
     $$->appendChild($3);
   }
 | expr T_LOGICAL_AND expr {
     $$ = NNEW(n_BINARY_EXPRESSION);
     $$->appendChild($1);
     $$->appendChild(NTYPE($2, n_OPERATOR));
     $$->appendChild($3);
   }
 | expr T_LOGICAL_XOR expr {
     $$ = NNEW(n_BINARY_EXPRESSION);
     $$->appendChild($1);
     $$->appendChild(NTYPE($2, n_OPERATOR));
     $$->appendChild($3);
   }
 | expr '|' expr {
     $$ = NNEW(n_BINARY_EXPRESSION);
     $$->appendChild($1);
     $$->appendChild(NTYPE($2, n_OPERATOR));
     $$->appendChild($3);
   }
 | expr '&' expr {
     $$ = NNEW(n_BINARY_EXPRESSION);
     $$->appendChild($1);
     $$->appendChild(NTYPE($2, n_OPERATOR));
     $$->appendChild($3);
   }
 | expr '^' expr {
     $$ = NNEW(n_BINARY_EXPRESSION);
     $$->appendChild($1);
     $$->appendChild(NTYPE($2, n_OPERATOR));
     $$->appendChild($3);
   }
 | expr '.' expr {
 
     /* The concatenation operator generates n_CONCATENATION_LIST instead of
        n_BINARY_EXPRESSION because we tend to run into stack depth issues in a
        lot of real-world cases otherwise (e.g., in PHP and JSON decoders). */
 
     if ($1->type == n_CONCATENATION_LIST && $3->type == n_CONCATENATION_LIST) {
       $1->appendChild(NTYPE($2, n_OPERATOR));
       $1->appendChildren($3);
       $$ = $1;
     } else if ($1->type == n_CONCATENATION_LIST) {
       $1->appendChild(NTYPE($2, n_OPERATOR));
       $1->appendChild($3);
       $$ = $1;
     } else if ($3->type == n_CONCATENATION_LIST) {
       $$ = NNEW(n_CONCATENATION_LIST);
       $$->appendChild($1);
       $$->appendChild(NTYPE($2, n_OPERATOR));
       $$->appendChildren($3);
     } else {
       $$ = NNEW(n_CONCATENATION_LIST);
       $$->appendChild($1);
       $$->appendChild(NTYPE($2, n_OPERATOR));
       $$->appendChild($3);
     }
   }
 | expr '+' expr {
     $$ = NNEW(n_BINARY_EXPRESSION);
     $$->appendChild($1);
     $$->appendChild(NTYPE($2, n_OPERATOR));
     $$->appendChild($3);
   }
 | expr '-' expr {
     $$ = NNEW(n_BINARY_EXPRESSION);
     $$->appendChild($1);
     $$->appendChild(NTYPE($2, n_OPERATOR));
     $$->appendChild($3);
   }
 | expr '*' expr {
     $$ = NNEW(n_BINARY_EXPRESSION);
     $$->appendChild($1);
     $$->appendChild(NTYPE($2, n_OPERATOR));
     $$->appendChild($3);
   }
 | expr '/' expr {
     $$ = NNEW(n_BINARY_EXPRESSION);
     $$->appendChild($1);
     $$->appendChild(NTYPE($2, n_OPERATOR));
     $$->appendChild($3);
   }
 | expr '%' expr {
     $$ = NNEW(n_BINARY_EXPRESSION);
     $$->appendChild($1);
     $$->appendChild(NTYPE($2, n_OPERATOR));
     $$->appendChild($3);
   }
 | expr T_SL expr {
     $$ = NNEW(n_BINARY_EXPRESSION);
     $$->appendChild($1);
     $$->appendChild(NTYPE($2, n_OPERATOR));
     $$->appendChild($3);
   }
 | expr T_SR expr {
     $$ = NNEW(n_BINARY_EXPRESSION);
     $$->appendChild($1);
     $$->appendChild(NTYPE($2, n_OPERATOR));
     $$->appendChild($3);
   }
 | '+' expr %prec T_INC {
     $$ = NNEW(n_UNARY_PREFIX_EXPRESSION);
     $$->appendChild(NTYPE($1, n_OPERATOR));
     $$->appendChild($2);
   }
 | '-' expr %prec T_INC {
     $$ = NNEW(n_UNARY_PREFIX_EXPRESSION);
     $$->appendChild(NTYPE($1, n_OPERATOR));
     $$->appendChild($2);
   }
 | '!' expr {
     $$ = NNEW(n_UNARY_PREFIX_EXPRESSION);
     $$->appendChild(NTYPE($1, n_OPERATOR));
     $$->appendChild($2);
   }
 | '~' expr {
     $$ = NNEW(n_UNARY_PREFIX_EXPRESSION);
     $$->appendChild(NTYPE($1, n_OPERATOR));
     $$->appendChild($2);
   }
 | expr T_IS_IDENTICAL expr {
     $$ = NNEW(n_BINARY_EXPRESSION);
     $$->appendChild($1);
     $$->appendChild(NTYPE($2, n_OPERATOR));
     $$->appendChild($3);
   }
 | expr T_IS_NOT_IDENTICAL expr {
     $$ = NNEW(n_BINARY_EXPRESSION);
     $$->appendChild($1);
     $$->appendChild(NTYPE($2, n_OPERATOR));
     $$->appendChild($3);
   }
 | expr T_IS_EQUAL expr {
     $$ = NNEW(n_BINARY_EXPRESSION);
     $$->appendChild($1);
     $$->appendChild(NTYPE($2, n_OPERATOR));
     $$->appendChild($3);
   }
 | expr T_IS_NOT_EQUAL expr {
     $$ = NNEW(n_BINARY_EXPRESSION);
     $$->appendChild($1);
     $$->appendChild(NTYPE($2, n_OPERATOR));
     $$->appendChild($3);
   }
 | expr '<' expr {
     $$ = NNEW(n_BINARY_EXPRESSION);
     $$->appendChild($1);
     $$->appendChild(NTYPE($2, n_OPERATOR));
     $$->appendChild($3);
   }
 | expr T_IS_SMALLER_OR_EQUAL expr {
     $$ = NNEW(n_BINARY_EXPRESSION);
     $$->appendChild($1);
     $$->appendChild(NTYPE($2, n_OPERATOR));
     $$->appendChild($3);
   }
 | expr '>' expr {
     $$ = NNEW(n_BINARY_EXPRESSION);
     $$->appendChild($1);
     $$->appendChild(NTYPE($2, n_OPERATOR));
     $$->appendChild($3);
   }
 | expr T_IS_GREATER_OR_EQUAL expr {
     $$ = NNEW(n_BINARY_EXPRESSION);
     $$->appendChild($1);
     $$->appendChild(NTYPE($2, n_OPERATOR));
     $$->appendChild($3);
   }
 | expr T_SPACESHIP expr {
     $$ = NNEW(n_BINARY_EXPRESSION);
     $$->appendChild($1);
     $$->appendChild(NTYPE($2, n_OPERATOR));
     $$->appendChild($3);
   }
 | expr T_INSTANCEOF class_name_reference {
     $$ = NNEW(n_BINARY_EXPRESSION);
     $$->appendChild($1);
     $$->appendChild(NTYPE($2, n_OPERATOR));
     $$->appendChild($3);
   }
 | parenthesis_expr
 | new_expr
 | expr '?' expr ':' expr {
     $$ = NNEW(n_TERNARY_EXPRESSION);
     $$->appendChild($1);
     $$->appendChild(NTYPE($2, n_OPERATOR));
     $$->appendChild($3);
     $$->appendChild(NTYPE($4, n_OPERATOR));
     $$->appendChild($5);
   }
 | expr '?' ':' expr {
     $$ = NNEW(n_TERNARY_EXPRESSION);
     $$->appendChild($1);
     $$->appendChild(NTYPE($2, n_OPERATOR));
     $$->appendChild(NNEW(n_EMPTY));
     $$->appendChild(NTYPE($3, n_OPERATOR));
     $$->appendChild($4);
   }
 | expr T_COALESCE expr {
     $$ = NNEW(n_BINARY_EXPRESSION);
     $$->appendChild($1);
     $$->appendChild(NTYPE($2, n_OPERATOR));
     $$->appendChild($3);
   }
 | internal_functions_in_yacc
 | T_INT_CAST expr {
     $$ = NNEW(n_CAST_EXPRESSION);
     $$->appendChild(NTYPE($1, n_CAST));
     $$->appendChild($2);
   }
 | T_DOUBLE_CAST expr {
     $$ = NNEW(n_CAST_EXPRESSION);
     $$->appendChild(NTYPE($1, n_CAST));
     $$->appendChild($2);
   }
 | T_STRING_CAST expr {
     $$ = NNEW(n_CAST_EXPRESSION);
     $$->appendChild(NTYPE($1, n_CAST));
     $$->appendChild($2);
   }
 | T_ARRAY_CAST expr {
     $$ = NNEW(n_CAST_EXPRESSION);
     $$->appendChild(NTYPE($1, n_CAST));
     $$->appendChild($2);
   }
 | T_OBJECT_CAST expr {
     $$ = NNEW(n_CAST_EXPRESSION);
     $$->appendChild(NTYPE($1, n_CAST));
     $$->appendChild($2);
   }
 | T_BOOL_CAST expr {
     $$ = NNEW(n_CAST_EXPRESSION);
     $$->appendChild(NTYPE($1, n_CAST));
     $$->appendChild($2);
   }
 | T_UNSET_CAST expr {
     $$ = NNEW(n_CAST_EXPRESSION);
     $$->appendChild(NTYPE($1, n_CAST));
     $$->appendChild($2);
   }
 | T_EXIT exit_expr {
     $$ = NNEW(n_UNARY_PREFIX_EXPRESSION);
     $$->appendChild(NTYPE($1, n_OPERATOR));
     $$->appendChild($2);
   }
 | '@' expr {
     $$ = NNEW(n_UNARY_PREFIX_EXPRESSION);
     $$->appendChild(NTYPE($1, n_OPERATOR));
     $$->appendChild($2);
   }
 | T_BACKTICKS_EXPR {
     NTYPE($1, n_BACKTICKS_EXPRESSION);
     $$ = $1;
   }
 | scalar
 | combined_scalar_offset
 | combined_scalar
 | T_PRINT expr {
     $$ = NNEW(n_UNARY_PREFIX_EXPRESSION);
     $$->appendChild(NTYPE($1, n_OPERATOR));
     $$->appendChild($2);
   }
 | T_YIELD {
     NTYPE($1, n_YIELD);
     $1->appendChild(NNEW(n_EMPTY));
     $1->appendChild(NNEW(n_EMPTY));
     $$ = $1;
   }
 | function is_reference
   '(' parameter_list ')'
   lexical_vars return_type
   '{' inner_statement_list '}' {
     NSPAN($1, n_FUNCTION_DECLARATION, $9);
     $1->appendChild(NNEW(n_EMPTY));
     $1->appendChild($2);
     $1->appendChild(NNEW(n_EMPTY));
     $1->appendChild(NEXPAND($3, $4, $5));
     $1->appendChild($6);
     $1->appendChild($7);
     $1->appendChild(NEXPAND($8, $9, $10));
 
     $$ = $1;
   }
 | T_STATIC function is_reference
   '(' parameter_list ')'
   lexical_vars return_type
   '{' inner_statement_list '}' {
     NSPAN($2, n_FUNCTION_DECLARATION, $10);
     NMORE($2, $1);
 
     $$ = NNEW(n_FUNCTION_MODIFIER_LIST);
     $$->appendChild(NTYPE($1, n_STRING));
     $2->appendChild($1);
 
     $2->appendChild(NNEW(n_EMPTY));
     $2->appendChild($3);
     $2->appendChild(NNEW(n_EMPTY));
     $2->appendChild(NEXPAND($4, $5, $6));
     $2->appendChild($7);
     $2->appendChild($8);
     $2->appendChild(NEXPAND($9, $10, $11));
 
     $$ = $2;
   }
 ;
 
 yield_expr:
   T_YIELD expr_without_variable {
     NTYPE($1, n_YIELD);
     $2->appendChild(NNEW(n_EMPTY));
     $1->appendChild($2);
     $$ = $1;
   }
 | T_YIELD variable {
     NTYPE($1, n_YIELD);
     $2->appendChild(NNEW(n_EMPTY));
     $1->appendChild($2);
     $$ = $1;
   }
 |  T_YIELD expr T_DOUBLE_ARROW expr_without_variable {
     NTYPE($1, n_YIELD);
     $1->appendChild($2);
     $1->appendChild($4);
     $$ = $1;
   }
 |  T_YIELD expr T_DOUBLE_ARROW variable {
     NTYPE($1, n_YIELD);
     $1->appendChild($2);
     $1->appendChild($4);
     $$ = $1;
   }
 ;
 
 function:
   T_FUNCTION
 ;
 
 lexical_vars:
   %empty {
     $$ = NNEW(n_EMPTY);
   }
 | T_USE '(' lexical_var_list ')' {
     NTYPE($1, n_LEXICAL_VARIABLE_LIST);
     $1->appendChildren($3);
     $$ = $1;
   }
 ;
 
 lexical_var_list:
   lexical_var_list ',' T_VARIABLE {
     $$ = $1->appendChild(NTYPE($3, n_VARIABLE));
   }
 | lexical_var_list ',' '&' T_VARIABLE {
     NTYPE($3, n_VARIABLE_REFERENCE);
     $3->appendChild(NTYPE($4, n_VARIABLE));
     $$ = $1->appendChild($3);
   }
 | T_VARIABLE {
     $$ = NNEW(n_LEXICAL_VARIABLE_LIST);
     $$->appendChild(NTYPE($1, n_VARIABLE));
   }
 | '&' T_VARIABLE {
     NTYPE($1, n_VARIABLE_REFERENCE);
     $1->appendChild(NTYPE($2, n_VARIABLE));
     $$ = NNEW(n_LEXICAL_VARIABLE_LIST);
     $$->appendChild($1);
   }
 ;
 
 function_call:
   namespace_name '(' function_call_parameter_list ')' {
     $$ = NNEW(n_FUNCTION_CALL);
     $$->appendChild($1);
     $$->appendChild(NEXPAND($2, $3, $4));
   }
 | T_NAMESPACE T_NS_SEPARATOR namespace_name
   '(' function_call_parameter_list ')' {
     NMORE($3, $1);
     $$ = NNEW(n_FUNCTION_CALL);
     $$->appendChild($3);
     $$->appendChild(NEXPAND($4, $5, $6));
   }
 | T_NS_SEPARATOR namespace_name '(' function_call_parameter_list ')' {
     NMORE($2, $1);
     $$ = NNEW(n_FUNCTION_CALL);
     $$->appendChild($2);
     $$->appendChild(NEXPAND($3, $4, $5));
   }
 | class_name T_PAAMAYIM_NEKUDOTAYIM T_STRING
   '(' function_call_parameter_list ')' {
     $$ = NNEW(n_CLASS_STATIC_ACCESS);
     $$->appendChild($1);
     $$->appendChild(NTYPE($3, n_STRING));
 
     $$ = NNEW(n_FUNCTION_CALL)->appendChild($$);
     $$->appendChild(NEXPAND($4, $5, $6));
   }
 | variable_class_name T_PAAMAYIM_NEKUDOTAYIM T_STRING
   '(' function_call_parameter_list ')' {
     $$ = NNEW(n_CLASS_STATIC_ACCESS);
     $$->appendChild($1);
     $$->appendChild(NTYPE($3, n_STRING));
 
     $$ = NNEW(n_FUNCTION_CALL)->appendChild($$);
     $$->appendChild(NEXPAND($4, $5, $6));
   }
 | variable_class_name T_PAAMAYIM_NEKUDOTAYIM variable_without_objects
   '(' function_call_parameter_list ')' {
     $$ = NNEW(n_CLASS_STATIC_ACCESS);
     $$->appendChild($1);
     $$->appendChild(NTYPE($3, n_STRING));
 
     $$ = NNEW(n_FUNCTION_CALL)->appendChild($$);
     $$->appendChild(NEXPAND($4, $5, $6));
   }
 | class_name T_PAAMAYIM_NEKUDOTAYIM variable_without_objects
   '(' function_call_parameter_list ')' {
     $$ = NNEW(n_CLASS_STATIC_ACCESS);
     $$->appendChild($1);
     $$->appendChild(NTYPE($3, n_STRING));
 
     $$ = NNEW(n_FUNCTION_CALL)->appendChild($$);
     $$->appendChild(NEXPAND($4, $5, $6));
   }
 | variable_without_objects '(' function_call_parameter_list ')' {
     $$ = NNEW(n_FUNCTION_CALL);
     $$->appendChild($1);
     $$->appendChild(NEXPAND($2, $3, $4));
   }
 ;
 
 class_name:
   T_STATIC {
     $$ = NTYPE($1, n_CLASS_NAME);
   }
 | namespace_name {
     $$ = NTYPE($1, n_CLASS_NAME);
   }
 | T_NAMESPACE T_NS_SEPARATOR namespace_name {
     NMORE($3, $1);
     $$ = NTYPE($3, n_CLASS_NAME);
   }
 | T_NS_SEPARATOR namespace_name {
     NMORE($2, $1);
     $$ = NTYPE($2, n_CLASS_NAME);
   }
 ;
 
 fully_qualified_class_name:
   namespace_name {
     $$ = NTYPE($1, n_CLASS_NAME);
   }
 | T_NAMESPACE T_NS_SEPARATOR namespace_name {
     NMORE($3, $1);
     $$ = NTYPE($3, n_CLASS_NAME);
   }
 | T_NS_SEPARATOR namespace_name {
     NMORE($2, $1);
     $$ = NTYPE($2, n_CLASS_NAME);
   }
 ;
 
 class_name_reference:
   class_name
 | dynamic_class_name_reference
 ;
 
 dynamic_class_name_reference:
   base_variable
   T_OBJECT_OPERATOR
   object_property
   dynamic_class_name_variable_properties {
     $$ = NNEW(n_OBJECT_PROPERTY_ACCESS);
     $$->appendChild($1);
     $$->appendChild($3);
     for (xhpast::node_list_t::iterator ii = $4->children.begin();
       ii != $4->children.end();
       ++ii) {
 
       $$ = NNEW(n_OBJECT_PROPERTY_ACCESS)->appendChild($$);
       $$->appendChild(*ii);
     }
   }
 | base_variable
 ;
 
 dynamic_class_name_variable_properties:
   dynamic_class_name_variable_properties dynamic_class_name_variable_property {
     $$ = $1->appendChild($2);
   }
 | %empty {
     $$ = NNEW(n_EMPTY);
   }
 ;
 
 dynamic_class_name_variable_property:
   T_OBJECT_OPERATOR object_property {
     $$ = $2;
   }
 ;
 
 exit_expr:
   %empty {
     $$ = NNEW(n_EMPTY);
   }
 | '(' ')' {
     NSPAN($1, n_EMPTY, $2);
     $$ = $1;
   }
 | '(' expr ')' {
     NSPAN($1, n_PARENTHETICAL_EXPRESSION, $3);
     $1->appendChild($2);
     $$ = $1;
   }
 ;
 
 ctor_arguments:
   %empty {
     $$ = NNEW(n_EMPTY);
   }
 | '(' function_call_parameter_list ')' {
     $$ = NEXPAND($1, $2, $3);
   }
 ;
 
 common_scalar:
   T_LNUMBER {
     $$ = NTYPE($1, n_NUMERIC_SCALAR);
   }
 | T_DNUMBER {
     $$ = NTYPE($1, n_NUMERIC_SCALAR);
   }
 | T_CONSTANT_ENCAPSED_STRING {
     $$ = NTYPE($1, n_STRING_SCALAR);
   }
 | T_LINE {
     $$ = NTYPE($1, n_MAGIC_SCALAR);
   }
 | T_FILE {
     $$ = NTYPE($1, n_MAGIC_SCALAR);
   }
 | T_DIR {
     $$ = NTYPE($1, n_MAGIC_SCALAR);
   }
 | T_CLASS_C {
     $$ = NTYPE($1, n_MAGIC_SCALAR);
   }
 | T_METHOD_C {
     $$ = NTYPE($1, n_MAGIC_SCALAR);
   }
 | T_TRAIT_C {
     $$ = NTYPE($1, n_MAGIC_SCALAR);
   }
 | T_FUNC_C {
     $$ = NTYPE($1, n_MAGIC_SCALAR);
   }
 | T_NS_C {
     $$ = NTYPE($1, n_MAGIC_SCALAR);
   }
 | T_HEREDOC {
     $$ = NTYPE($1, n_HEREDOC);
   }
 ;
 
 static_scalar: /* compile-time evaluated scalars */
   common_scalar
 | namespace_name
 | T_NAMESPACE T_NS_SEPARATOR namespace_name {
     NMORE($3, $1);
     $$ = $3;
   }
 | T_NS_SEPARATOR namespace_name {
     NMORE($2, $1);
     $$ = $2;
   }
 | '+' static_scalar {
     $$ = NNEW(n_UNARY_PREFIX_EXPRESSION);
     $$->appendChild(NTYPE($1, n_OPERATOR));
     $$->appendChild($2);
   }
 | '-' static_scalar {
     $$ = NNEW(n_UNARY_PREFIX_EXPRESSION);
     $$->appendChild(NTYPE($1, n_OPERATOR));
     $$->appendChild($2);
   }
 | T_ARRAY '(' static_array_pair_list ')' {
     NTYPE($1, n_ARRAY_LITERAL);
     $1->appendChild(NEXPAND($2, $3, $4));
     $$ = $1;
   }
 | '[' static_array_pair_list ']' {
     NTYPE($1, n_ARRAY_LITERAL);
     $1->appendChild(NEXPAND($1, $2, $3));
     $$ = $1;
   }
 | static_class_constant
 ;
 
 static_class_constant:
   class_name T_PAAMAYIM_NEKUDOTAYIM T_STRING {
     $$ = NNEW(n_CLASS_STATIC_ACCESS);
     $$->appendChild($1);
     $$->appendChild(NTYPE($3, n_STRING));
   }
 ;
 
 scalar:
   T_STRING_VARNAME
 | class_constant
 | namespace_name
 | T_NAMESPACE T_NS_SEPARATOR namespace_name {
     $$ = NMORE($3, $1);
   }
 | T_NS_SEPARATOR namespace_name {
     $$ = NMORE($2, $1);
   }
 | common_scalar
 ;
 
 static_array_pair_list:
   %empty {
     $$ = NNEW(n_ARRAY_VALUE_LIST);
   }
 | non_empty_static_array_pair_list possible_comma {
     $$ = NMORE($1, $2);
   }
 ;
 
 possible_comma:
   %empty {
     $$ = NNEW(n_EMPTY);
   }
 | ','
 ;
 
 non_empty_static_array_pair_list:
   non_empty_static_array_pair_list
   ','
   static_scalar
   T_DOUBLE_ARROW
   static_scalar {
     $$ = NNEW(n_ARRAY_VALUE);
     $$->appendChild($3);
     $$->appendChild($5);
 
     $$ = $1->appendChild($$);
   }
 | non_empty_static_array_pair_list ',' static_scalar {
     $$ = NNEW(n_ARRAY_VALUE);
     $$->appendChild(NNEW(n_EMPTY));
     $$->appendChild($3);
 
     $$ = $1->appendChild($$);
   }
 | static_scalar T_DOUBLE_ARROW static_scalar {
     $$ = NNEW(n_ARRAY_VALUE);
     $$->appendChild($1);
     $$->appendChild($3);
 
     $$ = NNEW(n_ARRAY_VALUE_LIST)->appendChild($$);
   }
 | static_scalar {
     $$ = NNEW(n_ARRAY_VALUE);
     $$->appendChild(NNEW(n_EMPTY));
     $$->appendChild($1);
 
     $$ = NNEW(n_ARRAY_VALUE_LIST)->appendChild($$);
   }
 ;
 
 expr:
   r_variable
 | expr_without_variable
 ;
 
 r_variable:
   variable
 ;
 
 w_variable:
   variable
 ;
 
 rw_variable:
   variable
 ;
 
 variable:
   base_variable_with_function_calls
   T_OBJECT_OPERATOR
   object_property method_or_not
   variable_properties {
     $$ = NNEW(n_OBJECT_PROPERTY_ACCESS);
     $$->appendChild($1);
     $$->appendChild($3);
 
     if ($4->type != n_EMPTY) {
       $$ = NNEW(n_METHOD_CALL)->appendChild($$);
       $$->appendChild($4);
     }
 
     for (xhpast::node_list_t::iterator ii = $5->children.begin();
       ii != $5->children.end();
       ++ii) {
 
       if ((*ii)->type == n_CALL_PARAMETER_LIST) {
         $$ = NNEW(n_METHOD_CALL)->appendChild($$);
         $$->appendChild((*ii));
       } else {
         $$ = NNEW(n_OBJECT_PROPERTY_ACCESS)->appendChild($$);
         $$->appendChild((*ii));
       }
     }
   }
 | base_variable_with_function_calls
 ;
 
 variable_properties:
   variable_properties variable_property {
     $$ = $1->appendChildren($2);
   }
 | %empty {
     $$ = NNEW(n_EMPTY);
   }
 ;
 
 variable_property:
   T_OBJECT_OPERATOR object_property method_or_not {
     $$ = NNEW(n_EMPTY);
     $$->appendChild($2);
     if ($3->type != n_EMPTY) {
       $$->appendChild($3);
     }
   }
 ;
 
 array_method_dereference:
   array_method_dereference '[' dim_offset ']' {
     $$ = NNEW(n_INDEX_ACCESS);
     $$->appendChild($1);
     $$->appendChild($3);
     NMORE($$, $4);
   }
 | method '[' dim_offset ']' {
     $$ = NNEW(n_INDEX_ACCESS);
     $$->appendChild($1);
     $$->appendChild($3);
     NMORE($$, $4);
   }
 ;
 
 method:
   '(' function_call_parameter_list ')' {
     $$ = NEXPAND($1, $2, $3);
   }
 ;
 
 method_or_not:
   method
 | array_method_dereference
 | %empty {
     $$ = NNEW(n_EMPTY);
   }
 ;
 
 variable_without_objects:
   reference_variable
 | simple_indirect_reference reference_variable {
     xhpast::Node *last = $1;
     NMORE($1, $2);
     while (last->firstChild() &&
            last->firstChild()->type == n_VARIABLE_VARIABLE) {
       NMORE(last, $2);
       last = last->firstChild();
     }
     last->appendChild($2);
 
     $$ = $1;
   }
 ;
 
 static_member:
   class_name T_PAAMAYIM_NEKUDOTAYIM variable_without_objects {
     $$ = NNEW(n_CLASS_STATIC_ACCESS);
     $$->appendChild($1);
     $$->appendChild($3);
   }
 | variable_class_name T_PAAMAYIM_NEKUDOTAYIM variable_without_objects {
     $$ = NNEW(n_CLASS_STATIC_ACCESS);
     $$->appendChild($1);
     $$->appendChild($3);
   }
 ;
 
 variable_class_name:
   reference_variable
 ;
 
 array_function_dereference:
   array_function_dereference '[' dim_offset ']' {
     $$ = NNEW(n_INDEX_ACCESS);
     $$->appendChild($1);
     $$->appendChild($3);
     NMORE($$, $4);
   }
 | function_call '[' dim_offset ']' {
     $$ = NNEW(n_INDEX_ACCESS);
     $$->appendChild($1);
     $$->appendChild($3);
     NMORE($$, $4);
   }
 ;
 
 base_variable_with_function_calls:
   base_variable
 | array_function_dereference
 | function_call
 ;
 
 base_variable:
   reference_variable
 | '(' new_expr ')' {
     $$ = NEXPAND($1, $2, $3);
   }
 | simple_indirect_reference reference_variable {
     xhpast::Node *last = $1;
     NMORE($1, $2);
     while (last->firstChild() &&
            last->firstChild()->type == n_VARIABLE_VARIABLE) {
       NMORE(last, $2);
       last = last->firstChild();
     }
     last->appendChild($2);
 
     $$ = $1;
   }
 | static_member
 ;
 
 reference_variable:
   reference_variable '[' dim_offset ']' {
     $$ = NNEW(n_INDEX_ACCESS);
     $$->appendChild($1);
     $$->appendChild($3);
     NMORE($$, $4);
   }
 | reference_variable '{' expr '}' {
     $$ = NNEW(n_INDEX_ACCESS);
     $$->appendChild($1);
     $$->appendChild($3);
     NMORE($$, $4);
   }
 | compound_variable
 ;
 
 compound_variable:
   T_VARIABLE {
     NTYPE($1, n_VARIABLE);
   }
 | '$' '{' expr '}' {
     NSPAN($1, n_VARIABLE_EXPRESSION, $4);
     $1->appendChild($3);
     $$ = $1;
   }
 ;
 
 dim_offset:
   %empty {
     $$ = NNEW(n_EMPTY);
   }
 | expr {
     $$ = $1;
   }
 ;
 
 object_property:
   object_dim_list
 | variable_without_objects
 ;
 
 object_dim_list:
   object_dim_list '[' dim_offset ']' {
     $$ = NNEW(n_INDEX_ACCESS);
     $$->appendChild($1);
     $$->appendChild($3);
     NMORE($$, $4);
   }
 | object_dim_list '{' expr '}' {
     $$ = NNEW(n_INDEX_ACCESS);
     $$->appendChild($1);
     $$->appendChild($3);
     NMORE($$, $4);
   }
 | variable_name
 ;
 
 variable_name:
   T_STRING {
     NTYPE($1, n_STRING);
     $$ = $1;
   }
 | '{' expr '}' {
   $$ = NEXPAND($1, $2, $3);
   }
 ;
 
 simple_indirect_reference:
   '$' {
     $$ = NTYPE($1, n_VARIABLE_VARIABLE);
   }
 | simple_indirect_reference '$' {
     $2 = NTYPE($2, n_VARIABLE_VARIABLE);
 
     xhpast::Node *last = $1;
     while (last->firstChild() &&
            last->firstChild()->type == n_VARIABLE_VARIABLE) {
       last = last->firstChild();
     }
     last->appendChild($2);
 
     $$ = $1;
   }
 ;
 
 assignment_list:
   assignment_list ',' assignment_list_element {
     $$ = $1->appendChild($3);
   }
 | assignment_list_element {
     $$ = NNEW(n_ASSIGNMENT_LIST);
     $$->appendChild($1);
   }
 ;
 
 assignment_list_element:
   variable
 | T_LIST '(' assignment_list ')' {
     $$ = NNEW(n_LIST);
     $$->appendChild(NEXPAND($2, $3, $4));
   }
 | %empty {
     $$ = NNEW(n_EMPTY);
   }
 ;
 
 array_pair_list:
   %empty {
     $$ = NNEW(n_ARRAY_VALUE_LIST);
   }
 | non_empty_array_pair_list possible_comma {
     $$ = NMORE($1, $2);
   }
 ;
 
 non_empty_array_pair_list:
   non_empty_array_pair_list ',' expr T_DOUBLE_ARROW expr {
     $$ = NNEW(n_ARRAY_VALUE);
     $$->appendChild($3);
     $$->appendChild($5);
 
     $$ = $1->appendChild($$);
   }
 | non_empty_array_pair_list ',' expr {
     $$ = NNEW(n_ARRAY_VALUE);
     $$->appendChild(NNEW(n_EMPTY));
     $$->appendChild($3);
 
     $$ = $1->appendChild($$);
   }
 | expr T_DOUBLE_ARROW expr {
     $$ = NNEW(n_ARRAY_VALUE);
     $$->appendChild($1);
     $$->appendChild($3);
 
     $$ = NNEW(n_ARRAY_VALUE_LIST)->appendChild($$);
   }
 | expr {
     $$ = NNEW(n_ARRAY_VALUE);
     $$->appendChild(NNEW(n_EMPTY));
     $$->appendChild($1);
 
     $$ = NNEW(n_ARRAY_VALUE_LIST)->appendChild($$);
   }
 | non_empty_array_pair_list ',' expr T_DOUBLE_ARROW '&' w_variable {
     $$ = NNEW(n_ARRAY_VALUE);
     $$->appendChild($3);
     $$->appendChild(NTYPE($5, n_VARIABLE_REFERENCE)->appendChild($6));
 
     $$ = $1->appendChild($$);
   }
 | non_empty_array_pair_list ',' '&' w_variable {
     $$ = NNEW(n_ARRAY_VALUE);
     $$->appendChild(NNEW(n_EMPTY));
     $$->appendChild(NTYPE($3, n_VARIABLE_REFERENCE)->appendChild($4));
 
     $$ = $1->appendChild($$);
   }
 | expr T_DOUBLE_ARROW '&' w_variable {
     $$ = NNEW(n_ARRAY_VALUE);
     $$->appendChild($1);
     $$->appendChild(NTYPE($3, n_VARIABLE_REFERENCE)->appendChild($4));
 
     $$ = NNEW(n_ARRAY_VALUE_LIST)->appendChild($$);
   }
 | '&' w_variable {
     $$ = NNEW(n_ARRAY_VALUE);
     $$->appendChild(NNEW(n_EMPTY));
     $$->appendChild(NTYPE($1, n_VARIABLE_REFERENCE)->appendChild($2));
 
     $$ = NNEW(n_ARRAY_VALUE_LIST)->appendChild($$);
   }
 ;
 
 internal_functions_in_yacc:
   T_ISSET '(' isset_variables ')' {
     NTYPE($1, n_SYMBOL_NAME);
 
     NSPAN($2, n_CALL_PARAMETER_LIST, $4);
     $2->appendChildren($3);
 
     $$ = NNEW(n_FUNCTION_CALL);
     $$->appendChild($1);
     $$->appendChild($2);
   }
 | T_EMPTY '(' variable ')' {
     NTYPE($1, n_SYMBOL_NAME);
 
     NSPAN($2, n_CALL_PARAMETER_LIST, $4);
     $2->appendChild($3);
 
     $$ = NNEW(n_FUNCTION_CALL);
     $$->appendChild($1);
     $$->appendChild($2);
   }
 | T_INCLUDE expr {
     $$ = NTYPE($1, n_INCLUDE_FILE)->appendChild($2);
   }
 | T_INCLUDE_ONCE expr {
     $$ = NTYPE($1, n_INCLUDE_FILE)->appendChild($2);
   }
 | T_EVAL '(' expr ')' {
     NTYPE($1, n_SYMBOL_NAME);
 
     NSPAN($2, n_CALL_PARAMETER_LIST, $4);
     $2->appendChild($3);
 
     $$ = NNEW(n_FUNCTION_CALL);
     $$->appendChild($1);
     $$->appendChild($2);
   }
 | T_REQUIRE expr {
     $$ = NTYPE($1, n_INCLUDE_FILE)->appendChild($2);
   }
 | T_REQUIRE_ONCE expr {
     $$ = NTYPE($1, n_INCLUDE_FILE)->appendChild($2);
   }
 ;
 
 isset_variables:
   variable {
     $$ = NNEW(n_EMPTY);
     $$->appendChild($1);
   }
 | isset_variables ',' variable {
     $$ = $1->appendChild($3);
   }
 ;
 
 parenthesis_expr:
   '(' expr ')' {
     NSPAN($1, n_PARENTHETICAL_EXPRESSION, $3);
     $1->appendChild($2);
     $$ = $1;
   }
 | '(' yield_expr ')' {
     $$ = NEXPAND($1, $2, $3);
   }
 ;
 
 combined_scalar_offset:
   combined_scalar '[' dim_offset ']' {
     $$ = NNEW(n_INDEX_ACCESS);
     $$->appendChild($1);
     $$->appendChild($3);
     NMORE($$, $4);
   }
 | combined_scalar_offset '[' dim_offset ']' {
     $$ = NNEW(n_INDEX_ACCESS);
     $$->appendChild($1);
     $$->appendChild($3);
     NMORE($$, $4);
   }
 | T_CONSTANT_ENCAPSED_STRING '[' dim_offset ']' {
     $$ = NNEW(n_INDEX_ACCESS);
     $$->appendChild(NTYPE($1, n_STRING_SCALAR));
     $$->appendChild($3);
     NMORE($$, $4);
   }
 | class_constant '[' dim_offset ']' {
     $$ = NNEW(n_INDEX_ACCESS);
     $$->appendChild($1);
     $$->appendChild($3);
     NMORE($$, $4);
   }
 | T_STRING '[' dim_offset ']' {
     $$ = NNEW(n_INDEX_ACCESS);
     $$->appendChild(NTYPE($1, n_STRING));
     $$->appendChild($3);
     NMORE($$, $4);
   }
 ;
 
 combined_scalar:
   T_ARRAY '(' array_pair_list ')' {
     NTYPE($1, n_ARRAY_LITERAL);
     $1->appendChild(NEXPAND($2, $3, $4));
     $$ = $1;
   }
 | '[' array_pair_list ']' {
     NTYPE($1, n_ARRAY_LITERAL);
     $1->appendChild(NEXPAND($1, $2, $3));
     $$ = $1;
   }
 ;
 
 new_expr:
   T_NEW class_name_reference ctor_arguments {
     NTYPE($1, n_NEW);
     $1->appendChild($2);
     $1->appendChild($3);
     $$ = $1;
   }
 ;
 
 class_constant:
   class_name T_PAAMAYIM_NEKUDOTAYIM T_STRING {
     $$ = NNEW(n_CLASS_STATIC_ACCESS);
     $$->appendChild($1);
     $$->appendChild(NTYPE($3, n_STRING));
   }
 | variable_class_name T_PAAMAYIM_NEKUDOTAYIM T_STRING {
     $$ = NNEW(n_CLASS_STATIC_ACCESS);
     $$->appendChild($1);
     $$->appendChild(NTYPE($3, n_STRING));
   }
 ;
 
 %%
 
 const char* yytokname(int tok) {
   if (tok < 255) {
     return NULL;
   }
   return yytname[YYTRANSLATE(tok)];
 }
diff --git a/support/xhpast/parser.yacc.cpp b/support/xhpast/parser.yacc.cpp
deleted file mode 100644
index 6d985bb..0000000
--- a/support/xhpast/parser.yacc.cpp
+++ /dev/null
@@ -1,7578 +0,0 @@
-/* A Bison parser, made by GNU Bison 3.0.4.  */
-
-/* Bison implementation for Yacc-like parsers in C
-
-   Copyright (C) 1984, 1989-1990, 2000-2015 Free Software Foundation, Inc.
-
-   This program is free software: you can redistribute it and/or modify
-   it under the terms of the GNU General Public License as published by
-   the Free Software Foundation, either version 3 of the License, or
-   (at your option) any later version.
-
-   This program is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-   GNU General Public License for more details.
-
-   You should have received a copy of the GNU General Public License
-   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
-
-/* As a special exception, you may create a larger work that contains
-   part or all of the Bison parser skeleton and distribute that work
-   under terms of your choice, so long as that work isn't itself a
-   parser generator using the skeleton or a modified version thereof
-   as a parser skeleton.  Alternatively, if you modify or redistribute
-   the parser skeleton itself, you may (at your option) remove this
-   special exception, which will cause the skeleton and the resulting
-   Bison output files to be licensed under the GNU General Public
-   License without this special exception.
-
-   This special exception was added by the Free Software Foundation in
-   version 2.2 of Bison.  */
-
-/* C LALR(1) parser skeleton written by Richard Stallman, by
-   simplifying the original so-called "semantic" parser.  */
-
-/* All symbols defined below should begin with yy or YY, to avoid
-   infringing on user name space.  This should be done even for local
-   variables, as they might otherwise be expanded by user macros.
-   There are some unavoidable exceptions within include files to
-   define necessary library symbols; they are noted "INFRINGES ON
-   USER NAME SPACE" below.  */
-
-/* Identify Bison output.  */
-#define YYBISON 1
-
-/* Bison version.  */
-#define YYBISON_VERSION "3.0.4"
-
-/* Skeleton name.  */
-#define YYSKELETON_NAME "yacc.c"
-
-/* Pure parsers.  */
-#define YYPURE 1
-
-/* Push parsers.  */
-#define YYPUSH 0
-
-/* Pull parsers.  */
-#define YYPULL 1
-
-
-/* Substitute the variable and function names.  */
-#define yyparse         xhpastparse
-#define yylex           xhpastlex
-#define yyerror         xhpasterror
-#define yydebug         xhpastdebug
-#define yynerrs         xhpastnerrs
-
-
-/* Copy the first part of user declarations.  */
-#line 1 "parser.y" /* yacc.c:339  */
-
-/*
- * If you modify this grammar, please update the version number in
- * ./xhpast.cpp and libphutil/src/parser/xhpast/bin/xhpast_parse.php
- */
-
-#include "ast.hpp"
-#include "node_names.hpp"
-// PHP's if/else rules use right reduction rather than left reduction which
-// means while parsing nested if/else's the stack grows until it the last
-// statement is read. This is annoying, particularly because of a quirk in
-// bison.
-// http://www.gnu.org/software/bison/manual/html_node/Memory-Management.html
-// Apparently if you compile a bison parser with g++ it can no longer grow
-// the stack. The work around is to just make your initial stack ridiculously
-// large. Unfortunately that increases memory usage while parsing which is
-// dumb. Anyway, putting a TODO here to fix PHP's if/else grammar.
-#define YYINITDEPTH 500
-#line 21 "parser.y" /* yacc.c:339  */
-
-#undef yyextra
-#define yyextra static_cast<yy_extra_type*>(xhpastget_extra(yyscanner))
-#undef yylineno
-#define yylineno yyextra->first_lineno
-#define push_state(s) xhp_new_push_state(s, (struct yyguts_t*) yyscanner)
-#define pop_state() xhp_new_pop_state((struct yyguts_t*) yyscanner)
-#define set_state(s) xhp_set_state(s, (struct yyguts_t*) yyscanner)
-
-#define NNEW(t) \
-  (new xhpast::Node(t))
-
-#define NTYPE(n, type) \
-  ((n)->setType(type))
-
-#define NMORE(n, end) \
-  ((n)->expandRange(end))
-
-#define NSPAN(n, type, end) \
-  (NMORE(NTYPE((n), type), end))
-
-#define NEXPAND(l, n, r) \
-  ((n)->expandRange(l)->expandRange(r))
-
-using namespace std;
-
-static void yyerror(void* yyscanner, void* _, const char* error) {
-  if (yyextra->terminated) {
-    return;
-  }
-  yyextra->terminated = true;
-  yyextra->error = error;
-}
-
-
-#line 127 "parser.yacc.cpp" /* yacc.c:339  */
-
-# ifndef YY_NULLPTR
-#  if defined __cplusplus && 201103L <= __cplusplus
-#   define YY_NULLPTR nullptr
-#  else
-#   define YY_NULLPTR 0
-#  endif
-# endif
-
-/* Enabling verbose error messages.  */
-#ifdef YYERROR_VERBOSE
-# undef YYERROR_VERBOSE
-# define YYERROR_VERBOSE 1
-#else
-# define YYERROR_VERBOSE 1
-#endif
-
-/* In a future release of Bison, this section will be replaced
-   by #include "parser.yacc.hpp".  */
-#ifndef YY_XHPAST_PARSER_YACC_HPP_INCLUDED
-# define YY_XHPAST_PARSER_YACC_HPP_INCLUDED
-/* Debug traces.  */
-#ifndef YYDEBUG
-# define YYDEBUG 0
-#endif
-#if YYDEBUG
-extern int xhpastdebug;
-#endif
-
-/* Token type.  */
-#ifndef YYTOKENTYPE
-# define YYTOKENTYPE
-  enum yytokentype
-  {
-    T_INCLUDE = 258,
-    T_INCLUDE_ONCE = 259,
-    T_EVAL = 260,
-    T_REQUIRE = 261,
-    T_REQUIRE_ONCE = 262,
-    T_LOGICAL_OR = 263,
-    T_LOGICAL_XOR = 264,
-    T_LOGICAL_AND = 265,
-    T_PRINT = 266,
-    T_PLUS_EQUAL = 267,
-    T_MINUS_EQUAL = 268,
-    T_MUL_EQUAL = 269,
-    T_DIV_EQUAL = 270,
-    T_CONCAT_EQUAL = 271,
-    T_MOD_EQUAL = 272,
-    T_AND_EQUAL = 273,
-    T_OR_EQUAL = 274,
-    T_XOR_EQUAL = 275,
-    T_SL_EQUAL = 276,
-    T_SR_EQUAL = 277,
-    T_COALESCE = 278,
-    T_BOOLEAN_OR = 279,
-    T_BOOLEAN_AND = 280,
-    T_IS_EQUAL = 281,
-    T_IS_NOT_EQUAL = 282,
-    T_IS_IDENTICAL = 283,
-    T_IS_NOT_IDENTICAL = 284,
-    T_SPACESHIP = 285,
-    T_IS_SMALLER_OR_EQUAL = 286,
-    T_IS_GREATER_OR_EQUAL = 287,
-    T_SL = 288,
-    T_SR = 289,
-    T_INSTANCEOF = 290,
-    T_INC = 291,
-    T_DEC = 292,
-    T_INT_CAST = 293,
-    T_DOUBLE_CAST = 294,
-    T_STRING_CAST = 295,
-    T_UNICODE_CAST = 296,
-    T_BINARY_CAST = 297,
-    T_ARRAY_CAST = 298,
-    T_OBJECT_CAST = 299,
-    T_BOOL_CAST = 300,
-    T_UNSET_CAST = 301,
-    T_NEW = 302,
-    T_CLONE = 303,
-    T_EXIT = 304,
-    T_IF = 305,
-    T_ELSEIF = 306,
-    T_ELSE = 307,
-    T_ENDIF = 308,
-    T_LNUMBER = 309,
-    T_DNUMBER = 310,
-    T_STRING = 311,
-    T_STRING_VARNAME = 312,
-    T_VARIABLE = 313,
-    T_NUM_STRING = 314,
-    T_INLINE_HTML = 315,
-    T_CHARACTER = 316,
-    T_BAD_CHARACTER = 317,
-    T_ENCAPSED_AND_WHITESPACE = 318,
-    T_CONSTANT_ENCAPSED_STRING = 319,
-    T_BACKTICKS_EXPR = 320,
-    T_ECHO = 321,
-    T_DO = 322,
-    T_WHILE = 323,
-    T_ENDWHILE = 324,
-    T_FOR = 325,
-    T_ENDFOR = 326,
-    T_FOREACH = 327,
-    T_ENDFOREACH = 328,
-    T_DECLARE = 329,
-    T_ENDDECLARE = 330,
-    T_AS = 331,
-    T_SWITCH = 332,
-    T_ENDSWITCH = 333,
-    T_CASE = 334,
-    T_DEFAULT = 335,
-    T_BREAK = 336,
-    T_CONTINUE = 337,
-    T_GOTO = 338,
-    T_FUNCTION = 339,
-    T_CONST = 340,
-    T_RETURN = 341,
-    T_TRY = 342,
-    T_CATCH = 343,
-    T_THROW = 344,
-    T_USE = 345,
-    T_GLOBAL = 346,
-    T_STATIC = 347,
-    T_ABSTRACT = 348,
-    T_FINAL = 349,
-    T_PRIVATE = 350,
-    T_PROTECTED = 351,
-    T_PUBLIC = 352,
-    T_VAR = 353,
-    T_UNSET = 354,
-    T_ISSET = 355,
-    T_EMPTY = 356,
-    T_HALT_COMPILER = 357,
-    T_CLASS = 358,
-    T_INTERFACE = 359,
-    T_EXTENDS = 360,
-    T_IMPLEMENTS = 361,
-    T_OBJECT_OPERATOR = 362,
-    T_DOUBLE_ARROW = 363,
-    T_LIST = 364,
-    T_ARRAY = 365,
-    T_CLASS_C = 366,
-    T_METHOD_C = 367,
-    T_FUNC_C = 368,
-    T_LINE = 369,
-    T_FILE = 370,
-    T_COMMENT = 371,
-    T_DOC_COMMENT = 372,
-    T_OPEN_TAG = 373,
-    T_OPEN_TAG_WITH_ECHO = 374,
-    T_OPEN_TAG_FAKE = 375,
-    T_CLOSE_TAG = 376,
-    T_WHITESPACE = 377,
-    T_START_HEREDOC = 378,
-    T_END_HEREDOC = 379,
-    T_HEREDOC = 380,
-    T_DOLLAR_OPEN_CURLY_BRACES = 381,
-    T_CURLY_OPEN = 382,
-    T_PAAMAYIM_NEKUDOTAYIM = 383,
-    T_BINARY_DOUBLE = 384,
-    T_BINARY_HEREDOC = 385,
-    T_NAMESPACE = 386,
-    T_NS_C = 387,
-    T_DIR = 388,
-    T_NS_SEPARATOR = 389,
-    T_INSTEADOF = 390,
-    T_CALLABLE = 391,
-    T_TRAIT = 392,
-    T_TRAIT_C = 393,
-    T_YIELD = 394,
-    T_FINALLY = 395,
-    T_ELLIPSIS = 396
-  };
-#endif
-
-/* Value type.  */
-#if ! defined YYSTYPE && ! defined YYSTYPE_IS_DECLARED
-typedef int YYSTYPE;
-# define YYSTYPE_IS_TRIVIAL 1
-# define YYSTYPE_IS_DECLARED 1
-#endif
-
-
-
-int xhpastparse (void* yyscanner, xhpast::Node** root);
-
-#endif /* !YY_XHPAST_PARSER_YACC_HPP_INCLUDED  */
-
-/* Copy the second part of user declarations.  */
-
-#line 319 "parser.yacc.cpp" /* yacc.c:358  */
-
-#ifdef short
-# undef short
-#endif
-
-#ifdef YYTYPE_UINT8
-typedef YYTYPE_UINT8 yytype_uint8;
-#else
-typedef unsigned char yytype_uint8;
-#endif
-
-#ifdef YYTYPE_INT8
-typedef YYTYPE_INT8 yytype_int8;
-#else
-typedef signed char yytype_int8;
-#endif
-
-#ifdef YYTYPE_UINT16
-typedef YYTYPE_UINT16 yytype_uint16;
-#else
-typedef unsigned short int yytype_uint16;
-#endif
-
-#ifdef YYTYPE_INT16
-typedef YYTYPE_INT16 yytype_int16;
-#else
-typedef short int yytype_int16;
-#endif
-
-#ifndef YYSIZE_T
-# ifdef __SIZE_TYPE__
-#  define YYSIZE_T __SIZE_TYPE__
-# elif defined size_t
-#  define YYSIZE_T size_t
-# elif ! defined YYSIZE_T
-#  include <stddef.h> /* INFRINGES ON USER NAME SPACE */
-#  define YYSIZE_T size_t
-# else
-#  define YYSIZE_T unsigned int
-# endif
-#endif
-
-#define YYSIZE_MAXIMUM ((YYSIZE_T) -1)
-
-#ifndef YY_
-# if defined YYENABLE_NLS && YYENABLE_NLS
-#  if ENABLE_NLS
-#   include <libintl.h> /* INFRINGES ON USER NAME SPACE */
-#   define YY_(Msgid) dgettext ("bison-runtime", Msgid)
-#  endif
-# endif
-# ifndef YY_
-#  define YY_(Msgid) Msgid
-# endif
-#endif
-
-#ifndef YY_ATTRIBUTE
-# if (defined __GNUC__                                               \
-      && (2 < __GNUC__ || (__GNUC__ == 2 && 96 <= __GNUC_MINOR__)))  \
-     || defined __SUNPRO_C && 0x5110 <= __SUNPRO_C
-#  define YY_ATTRIBUTE(Spec) __attribute__(Spec)
-# else
-#  define YY_ATTRIBUTE(Spec) /* empty */
-# endif
-#endif
-
-#ifndef YY_ATTRIBUTE_PURE
-# define YY_ATTRIBUTE_PURE   YY_ATTRIBUTE ((__pure__))
-#endif
-
-#ifndef YY_ATTRIBUTE_UNUSED
-# define YY_ATTRIBUTE_UNUSED YY_ATTRIBUTE ((__unused__))
-#endif
-
-#if !defined _Noreturn \
-     && (!defined __STDC_VERSION__ || __STDC_VERSION__ < 201112)
-# if defined _MSC_VER && 1200 <= _MSC_VER
-#  define _Noreturn __declspec (noreturn)
-# else
-#  define _Noreturn YY_ATTRIBUTE ((__noreturn__))
-# endif
-#endif
-
-/* Suppress unused-variable warnings by "using" E.  */
-#if ! defined lint || defined __GNUC__
-# define YYUSE(E) ((void) (E))
-#else
-# define YYUSE(E) /* empty */
-#endif
-
-#if defined __GNUC__ && 407 <= __GNUC__ * 100 + __GNUC_MINOR__
-/* Suppress an incorrect diagnostic about yylval being uninitialized.  */
-# define YY_IGNORE_MAYBE_UNINITIALIZED_BEGIN \
-    _Pragma ("GCC diagnostic push") \
-    _Pragma ("GCC diagnostic ignored \"-Wuninitialized\"")\
-    _Pragma ("GCC diagnostic ignored \"-Wmaybe-uninitialized\"")
-# define YY_IGNORE_MAYBE_UNINITIALIZED_END \
-    _Pragma ("GCC diagnostic pop")
-#else
-# define YY_INITIAL_VALUE(Value) Value
-#endif
-#ifndef YY_IGNORE_MAYBE_UNINITIALIZED_BEGIN
-# define YY_IGNORE_MAYBE_UNINITIALIZED_BEGIN
-# define YY_IGNORE_MAYBE_UNINITIALIZED_END
-#endif
-#ifndef YY_INITIAL_VALUE
-# define YY_INITIAL_VALUE(Value) /* Nothing. */
-#endif
-
-
-#if ! defined yyoverflow || YYERROR_VERBOSE
-
-/* The parser invokes alloca or malloc; define the necessary symbols.  */
-
-# ifdef YYSTACK_USE_ALLOCA
-#  if YYSTACK_USE_ALLOCA
-#   ifdef __GNUC__
-#    define YYSTACK_ALLOC __builtin_alloca
-#   elif defined __BUILTIN_VA_ARG_INCR
-#    include <alloca.h> /* INFRINGES ON USER NAME SPACE */
-#   elif defined _AIX
-#    define YYSTACK_ALLOC __alloca
-#   elif defined _MSC_VER
-#    include <malloc.h> /* INFRINGES ON USER NAME SPACE */
-#    define alloca _alloca
-#   else
-#    define YYSTACK_ALLOC alloca
-#    if ! defined _ALLOCA_H && ! defined EXIT_SUCCESS
-#     include <stdlib.h> /* INFRINGES ON USER NAME SPACE */
-      /* Use EXIT_SUCCESS as a witness for stdlib.h.  */
-#     ifndef EXIT_SUCCESS
-#      define EXIT_SUCCESS 0
-#     endif
-#    endif
-#   endif
-#  endif
-# endif
-
-# ifdef YYSTACK_ALLOC
-   /* Pacify GCC's 'empty if-body' warning.  */
-#  define YYSTACK_FREE(Ptr) do { /* empty */; } while (0)
-#  ifndef YYSTACK_ALLOC_MAXIMUM
-    /* The OS might guarantee only one guard page at the bottom of the stack,
-       and a page size can be as small as 4096 bytes.  So we cannot safely
-       invoke alloca (N) if N exceeds 4096.  Use a slightly smaller number
-       to allow for a few compiler-allocated temporary stack slots.  */
-#   define YYSTACK_ALLOC_MAXIMUM 4032 /* reasonable circa 2006 */
-#  endif
-# else
-#  define YYSTACK_ALLOC YYMALLOC
-#  define YYSTACK_FREE YYFREE
-#  ifndef YYSTACK_ALLOC_MAXIMUM
-#   define YYSTACK_ALLOC_MAXIMUM YYSIZE_MAXIMUM
-#  endif
-#  if (defined __cplusplus && ! defined EXIT_SUCCESS \
-       && ! ((defined YYMALLOC || defined malloc) \
-             && (defined YYFREE || defined free)))
-#   include <stdlib.h> /* INFRINGES ON USER NAME SPACE */
-#   ifndef EXIT_SUCCESS
-#    define EXIT_SUCCESS 0
-#   endif
-#  endif
-#  ifndef YYMALLOC
-#   define YYMALLOC malloc
-#   if ! defined malloc && ! defined EXIT_SUCCESS
-void *malloc (YYSIZE_T); /* INFRINGES ON USER NAME SPACE */
-#   endif
-#  endif
-#  ifndef YYFREE
-#   define YYFREE free
-#   if ! defined free && ! defined EXIT_SUCCESS
-void free (void *); /* INFRINGES ON USER NAME SPACE */
-#   endif
-#  endif
-# endif
-#endif /* ! defined yyoverflow || YYERROR_VERBOSE */
-
-
-#if (! defined yyoverflow \
-     && (! defined __cplusplus \
-         || (defined YYSTYPE_IS_TRIVIAL && YYSTYPE_IS_TRIVIAL)))
-
-/* A type that is properly aligned for any stack member.  */
-union yyalloc
-{
-  yytype_int16 yyss_alloc;
-  YYSTYPE yyvs_alloc;
-};
-
-/* The size of the maximum gap between one aligned stack and the next.  */
-# define YYSTACK_GAP_MAXIMUM (sizeof (union yyalloc) - 1)
-
-/* The size of an array large to enough to hold all stacks, each with
-   N elements.  */
-# define YYSTACK_BYTES(N) \
-     ((N) * (sizeof (yytype_int16) + sizeof (YYSTYPE)) \
-      + YYSTACK_GAP_MAXIMUM)
-
-# define YYCOPY_NEEDED 1
-
-/* Relocate STACK from its old location to the new one.  The
-   local variables YYSIZE and YYSTACKSIZE give the old and new number of
-   elements in the stack, and YYPTR gives the new location of the
-   stack.  Advance YYPTR to a properly aligned location for the next
-   stack.  */
-# define YYSTACK_RELOCATE(Stack_alloc, Stack)                           \
-    do                                                                  \
-      {                                                                 \
-        YYSIZE_T yynewbytes;                                            \
-        YYCOPY (&yyptr->Stack_alloc, Stack, yysize);                    \
-        Stack = &yyptr->Stack_alloc;                                    \
-        yynewbytes = yystacksize * sizeof (*Stack) + YYSTACK_GAP_MAXIMUM; \
-        yyptr += yynewbytes / sizeof (*yyptr);                          \
-      }                                                                 \
-    while (0)
-
-#endif
-
-#if defined YYCOPY_NEEDED && YYCOPY_NEEDED
-/* Copy COUNT objects from SRC to DST.  The source and destination do
-   not overlap.  */
-# ifndef YYCOPY
-#  if defined __GNUC__ && 1 < __GNUC__
-#   define YYCOPY(Dst, Src, Count) \
-      __builtin_memcpy (Dst, Src, (Count) * sizeof (*(Src)))
-#  else
-#   define YYCOPY(Dst, Src, Count)              \
-      do                                        \
-        {                                       \
-          YYSIZE_T yyi;                         \
-          for (yyi = 0; yyi < (Count); yyi++)   \
-            (Dst)[yyi] = (Src)[yyi];            \
-        }                                       \
-      while (0)
-#  endif
-# endif
-#endif /* !YYCOPY_NEEDED */
-
-/* YYFINAL -- State number of the termination state.  */
-#define YYFINAL  3
-/* YYLAST -- Last index in YYTABLE.  */
-#define YYLAST   7500
-
-/* YYNTOKENS -- Number of terminals.  */
-#define YYNTOKENS  168
-/* YYNNTS -- Number of nonterminals.  */
-#define YYNNTS  135
-/* YYNRULES -- Number of rules.  */
-#define YYNRULES  442
-/* YYNSTATES -- Number of states.  */
-#define YYNSTATES  908
-
-/* YYTRANSLATE[YYX] -- Symbol number corresponding to YYX as returned
-   by yylex, with out-of-bounds checking.  */
-#define YYUNDEFTOK  2
-#define YYMAXUTOK   396
-
-#define YYTRANSLATE(YYX)                                                \
-  ((unsigned int) (YYX) <= YYMAXUTOK ? yytranslate[YYX] : YYUNDEFTOK)
-
-/* YYTRANSLATE[TOKEN-NUM] -- Symbol number corresponding to TOKEN-NUM
-   as returned by yylex, without out-of-bounds checking.  */
-static const yytype_uint8 yytranslate[] =
-{
-       0,     2,     2,     2,     2,     2,     2,     2,     2,     2,
-       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
-       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
-       2,     2,     2,    50,     2,     2,   166,    49,    32,     2,
-     161,   162,    47,    44,     8,    45,    46,    48,     2,     2,
-       2,     2,     2,     2,     2,     2,     2,     2,    26,   163,
-      38,    13,    40,    25,    64,     2,     2,     2,     2,     2,
-       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
-       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
-       2,    65,     2,   167,    31,     2,     2,     2,     2,     2,
-       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
-       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
-       2,     2,     2,   164,    30,   165,    52,     2,     2,     2,
-       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
-       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
-       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
-       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
-       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
-       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
-       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
-       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
-       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
-       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
-       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
-       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
-       2,     2,     2,     2,     2,     2,     1,     2,     3,     4,
-       5,     6,     7,     9,    10,    11,    12,    14,    15,    16,
-      17,    18,    19,    20,    21,    22,    23,    24,    27,    28,
-      29,    33,    34,    35,    36,    37,    39,    41,    42,    43,
-      51,    53,    54,    55,    56,    57,    58,    59,    60,    61,
-      62,    63,    66,    67,    68,    69,    70,    71,    72,    73,
-      74,    75,    76,    77,    78,    79,    80,    81,    82,    83,
-      84,    85,    86,    87,    88,    89,    90,    91,    92,    93,
-      94,    95,    96,    97,    98,    99,   100,   101,   102,   103,
-     104,   105,   106,   107,   108,   109,   110,   111,   112,   113,
-     114,   115,   116,   117,   118,   119,   120,   121,   122,   123,
-     124,   125,   126,   127,   128,   129,   130,   131,   132,   133,
-     134,   135,   136,   137,   138,   139,   140,   141,   142,   143,
-     144,   145,   146,   147,   148,   149,   150,   151,   152,   153,
-     154,   155,   156,   157,   158,   159,   160
-};
-
-#if YYDEBUG
-  /* YYRLINE[YYN] -- Source line where rule number YYN was defined.  */
-static const yytype_uint16 yyrline[] =
-{
-       0,   210,   210,   216,   219,   225,   228,   234,   235,   236,
-     237,   242,   249,   255,   263,   268,   275,   278,   285,   290,
-     296,   302,   312,   319,   329,   332,   338,   339,   340,   341,
-     349,   350,   356,   359,   362,   368,   371,   401,   420,   427,
-     435,   448,   455,   462,   469,   476,   483,   490,   497,   504,
-     509,   514,   519,   523,   527,   531,   537,   555,   572,   578,
-     582,   591,   600,   608,   619,   623,   629,   641,   644,   648,
-     657,   661,   668,   672,   676,   680,   683,   689,   705,   717,
-     732,   736,   743,   750,   757,   760,   766,   770,   773,   781,
-     784,   792,   795,   801,   804,   810,   811,   819,   820,   828,
-     829,   837,   838,   846,   852,   863,   866,   876,   881,   893,
-     896,   904,   914,   915,   919,   920,   928,   931,   941,   944,
-     954,   957,   965,   968,   976,   977,   983,   991,  1000,  1009,
-    1017,  1025,  1034,  1044,  1056,  1060,  1066,  1069,  1073,  1076,
-    1079,  1085,  1088,  1093,  1101,  1102,  1108,  1111,  1117,  1118,
-    1121,  1128,  1132,  1139,  1142,  1146,  1153,  1161,  1169,  1177,
-    1188,  1191,  1197,  1205,  1209,  1212,  1212,  1230,  1238,  1241,
-    1247,  1250,  1256,  1259,  1265,  1269,  1276,  1279,  1285,  1293,
-    1297,  1304,  1308,  1314,  1322,  1328,  1337,  1340,  1348,  1351,
-    1357,  1358,  1365,  1368,  1375,  1379,  1385,  1386,  1387,  1388,
-    1389,  1390,  1394,  1401,  1408,  1415,  1425,  1434,  1446,  1449,
-    1456,  1459,  1464,  1467,  1474,  1482,  1488,  1498,  1512,  1517,
-    1523,  1529,  1535,  1541,  1547,  1553,  1559,  1565,  1571,  1577,
-    1583,  1588,  1593,  1598,  1603,  1609,  1615,  1621,  1627,  1633,
-    1639,  1645,  1651,  1677,  1683,  1689,  1695,  1701,  1707,  1713,
-    1719,  1724,  1729,  1734,  1739,  1745,  1751,  1757,  1763,  1769,
-    1775,  1781,  1787,  1793,  1799,  1800,  1801,  1809,  1817,  1823,
-    1824,  1829,  1834,  1839,  1844,  1849,  1854,  1859,  1864,  1869,
-    1873,  1874,  1875,  1876,  1881,  1887,  1902,  1926,  1932,  1938,
-    1944,  1953,  1957,  1960,  1968,  1971,  1976,  1980,  1989,  1994,
-    2001,  2007,  2016,  2025,  2034,  2043,  2051,  2054,  2057,  2061,
-    2068,  2071,  2075,  2082,  2083,  2087,  2102,  2106,  2109,  2115,
-    2121,  2124,  2128,  2136,  2139,  2145,  2148,  2151,  2154,  2157,
-    2160,  2163,  2166,  2169,  2172,  2175,  2178,  2184,  2185,  2186,
-    2190,  2194,  2199,  2204,  2209,  2214,  2218,  2226,  2227,  2228,
-    2229,  2232,  2235,  2239,  2242,  2248,  2251,  2255,  2266,  2273,
-    2280,  2290,  2291,  2295,  2299,  2303,  2307,  2333,  2337,  2340,
-    2346,  2356,  2362,  2371,  2377,  2378,  2379,  2385,  2386,  2401,
-    2406,  2414,  2418,  2424,  2433,  2434,  2435,  2439,  2440,  2443,
-    2455,  2459,  2465,  2471,  2475,  2478,  2486,  2489,  2495,  2496,
-    2500,  2506,  2512,  2516,  2520,  2526,  2529,  2544,  2547,  2554,
-    2555,  2559,  2565,  2568,  2574,  2581,  2588,  2595,  2602,  2609,
-    2616,  2623,  2633,  2643,  2653,  2656,  2659,  2669,  2672,  2678,
-    2682,  2688,  2693,  2699,  2705,  2711,  2717,  2723,  2732,  2737,
-    2745,  2754,  2759
-};
-#endif
-
-#if YYDEBUG || YYERROR_VERBOSE || 1
-/* YYTNAME[SYMBOL-NUM] -- String name of the symbol SYMBOL-NUM.
-   First, the terminals, then, starting at YYNTOKENS, nonterminals.  */
-static const char *const yytname[] =
-{
-  "$end", "error", "$undefined", "T_INCLUDE", "T_INCLUDE_ONCE", "T_EVAL",
-  "T_REQUIRE", "T_REQUIRE_ONCE", "','", "T_LOGICAL_OR", "T_LOGICAL_XOR",
-  "T_LOGICAL_AND", "T_PRINT", "'='", "T_PLUS_EQUAL", "T_MINUS_EQUAL",
-  "T_MUL_EQUAL", "T_DIV_EQUAL", "T_CONCAT_EQUAL", "T_MOD_EQUAL",
-  "T_AND_EQUAL", "T_OR_EQUAL", "T_XOR_EQUAL", "T_SL_EQUAL", "T_SR_EQUAL",
-  "'?'", "':'", "T_COALESCE", "T_BOOLEAN_OR", "T_BOOLEAN_AND", "'|'",
-  "'^'", "'&'", "T_IS_EQUAL", "T_IS_NOT_EQUAL", "T_IS_IDENTICAL",
-  "T_IS_NOT_IDENTICAL", "T_SPACESHIP", "'<'", "T_IS_SMALLER_OR_EQUAL",
-  "'>'", "T_IS_GREATER_OR_EQUAL", "T_SL", "T_SR", "'+'", "'-'", "'.'",
-  "'*'", "'/'", "'%'", "'!'", "T_INSTANCEOF", "'~'", "T_INC", "T_DEC",
-  "T_INT_CAST", "T_DOUBLE_CAST", "T_STRING_CAST", "T_UNICODE_CAST",
-  "T_BINARY_CAST", "T_ARRAY_CAST", "T_OBJECT_CAST", "T_BOOL_CAST",
-  "T_UNSET_CAST", "'@'", "'['", "T_NEW", "T_CLONE", "T_EXIT", "T_IF",
-  "T_ELSEIF", "T_ELSE", "T_ENDIF", "T_LNUMBER", "T_DNUMBER", "T_STRING",
-  "T_STRING_VARNAME", "T_VARIABLE", "T_NUM_STRING", "T_INLINE_HTML",
-  "T_CHARACTER", "T_BAD_CHARACTER", "T_ENCAPSED_AND_WHITESPACE",
-  "T_CONSTANT_ENCAPSED_STRING", "T_BACKTICKS_EXPR", "T_ECHO", "T_DO",
-  "T_WHILE", "T_ENDWHILE", "T_FOR", "T_ENDFOR", "T_FOREACH",
-  "T_ENDFOREACH", "T_DECLARE", "T_ENDDECLARE", "T_AS", "T_SWITCH",
-  "T_ENDSWITCH", "T_CASE", "T_DEFAULT", "T_BREAK", "T_CONTINUE", "T_GOTO",
-  "T_FUNCTION", "T_CONST", "T_RETURN", "T_TRY", "T_CATCH", "T_THROW",
-  "T_USE", "T_GLOBAL", "T_STATIC", "T_ABSTRACT", "T_FINAL", "T_PRIVATE",
-  "T_PROTECTED", "T_PUBLIC", "T_VAR", "T_UNSET", "T_ISSET", "T_EMPTY",
-  "T_HALT_COMPILER", "T_CLASS", "T_INTERFACE", "T_EXTENDS", "T_IMPLEMENTS",
-  "T_OBJECT_OPERATOR", "T_DOUBLE_ARROW", "T_LIST", "T_ARRAY", "T_CLASS_C",
-  "T_METHOD_C", "T_FUNC_C", "T_LINE", "T_FILE", "T_COMMENT",
-  "T_DOC_COMMENT", "T_OPEN_TAG", "T_OPEN_TAG_WITH_ECHO", "T_OPEN_TAG_FAKE",
-  "T_CLOSE_TAG", "T_WHITESPACE", "T_START_HEREDOC", "T_END_HEREDOC",
-  "T_HEREDOC", "T_DOLLAR_OPEN_CURLY_BRACES", "T_CURLY_OPEN",
-  "T_PAAMAYIM_NEKUDOTAYIM", "T_BINARY_DOUBLE", "T_BINARY_HEREDOC",
-  "T_NAMESPACE", "T_NS_C", "T_DIR", "T_NS_SEPARATOR", "T_INSTEADOF",
-  "T_CALLABLE", "T_TRAIT", "T_TRAIT_C", "T_YIELD", "T_FINALLY",
-  "T_ELLIPSIS", "'('", "')'", "';'", "'{'", "'}'", "'$'", "']'", "$accept",
-  "start", "top_statement_list", "namespace_name", "top_statement",
-  "use_declarations", "use_declaration", "constant_declaration",
-  "inner_statement_list", "inner_statement", "statement",
-  "unticked_statement", "catch_list", "catch", "finally_statement",
-  "non_empty_finally_statement", "unset_variables", "unset_variable",
-  "function_declaration_statement", "class_declaration_statement",
-  "is_reference", "unticked_function_declaration_statement",
-  "unticked_class_declaration_statement", "class_entry_type",
-  "extends_from", "interface_entry", "interface_extends_list",
-  "implements_list", "interface_list", "foreach_optional_arg",
-  "foreach_variable", "for_statement", "foreach_statement",
-  "declare_statement", "declare_list", "switch_case_list", "case_list",
-  "case_separator", "while_statement", "elseif_list", "new_elseif_list",
-  "else_single", "new_else_single", "parameter_list",
-  "non_empty_parameter_list", "parameter", "optional_type", "type",
-  "return_type", "function_call_parameter_list",
-  "non_empty_function_call_parameter_list", "argument", "global_var_list",
-  "global_var", "static_var_list", "class_statement_list",
-  "class_statement", "$@1", "trait_use_statement", "trait_list",
-  "trait_adaptations", "trait_adaptation_list",
-  "non_empty_trait_adaptation_list", "trait_adaptation_statement",
-  "trait_precedence", "trait_reference_list", "trait_method_reference",
-  "trait_method_reference_fully_qualified", "trait_alias",
-  "trait_modifiers", "method_body", "variable_modifiers",
-  "method_modifiers", "non_empty_member_modifiers", "member_modifier",
-  "class_variable_declaration", "class_constant_declaration",
-  "echo_expr_list", "for_expr", "non_empty_for_expr",
-  "expr_without_variable", "yield_expr", "function", "lexical_vars",
-  "lexical_var_list", "function_call", "class_name",
-  "fully_qualified_class_name", "class_name_reference",
-  "dynamic_class_name_reference", "dynamic_class_name_variable_properties",
-  "dynamic_class_name_variable_property", "exit_expr", "ctor_arguments",
-  "common_scalar", "static_scalar", "static_class_constant", "scalar",
-  "static_array_pair_list", "possible_comma",
-  "non_empty_static_array_pair_list", "expr", "r_variable", "w_variable",
-  "rw_variable", "variable", "variable_properties", "variable_property",
-  "array_method_dereference", "method", "method_or_not",
-  "variable_without_objects", "static_member", "variable_class_name",
-  "array_function_dereference", "base_variable_with_function_calls",
-  "base_variable", "reference_variable", "compound_variable", "dim_offset",
-  "object_property", "object_dim_list", "variable_name",
-  "simple_indirect_reference", "assignment_list",
-  "assignment_list_element", "array_pair_list",
-  "non_empty_array_pair_list", "internal_functions_in_yacc",
-  "isset_variables", "parenthesis_expr", "combined_scalar_offset",
-  "combined_scalar", "new_expr", "class_constant", YY_NULLPTR
-};
-#endif
-
-# ifdef YYPRINT
-/* YYTOKNUM[NUM] -- (External) token number corresponding to the
-   (internal) symbol number NUM (which must be that of a token).  */
-static const yytype_uint16 yytoknum[] =
-{
-       0,   256,   257,   258,   259,   260,   261,   262,    44,   263,
-     264,   265,   266,    61,   267,   268,   269,   270,   271,   272,
-     273,   274,   275,   276,   277,    63,    58,   278,   279,   280,
-     124,    94,    38,   281,   282,   283,   284,   285,    60,   286,
-      62,   287,   288,   289,    43,    45,    46,    42,    47,    37,
-      33,   290,   126,   291,   292,   293,   294,   295,   296,   297,
-     298,   299,   300,   301,    64,    91,   302,   303,   304,   305,
-     306,   307,   308,   309,   310,   311,   312,   313,   314,   315,
-     316,   317,   318,   319,   320,   321,   322,   323,   324,   325,
-     326,   327,   328,   329,   330,   331,   332,   333,   334,   335,
-     336,   337,   338,   339,   340,   341,   342,   343,   344,   345,
-     346,   347,   348,   349,   350,   351,   352,   353,   354,   355,
-     356,   357,   358,   359,   360,   361,   362,   363,   364,   365,
-     366,   367,   368,   369,   370,   371,   372,   373,   374,   375,
-     376,   377,   378,   379,   380,   381,   382,   383,   384,   385,
-     386,   387,   388,   389,   390,   391,   392,   393,   394,   395,
-     396,    40,    41,    59,   123,   125,    36,    93
-};
-# endif
-
-#define YYPACT_NINF -694
-
-#define yypact_value_is_default(Yystate) \
-  (!!((Yystate) == (-694)))
-
-#define YYTABLE_NINF -382
-
-#define yytable_value_is_error(Yytable_value) \
-  (!!((Yytable_value) == (-382)))
-
-  /* YYPACT[STATE-NUM] -- Index in YYTABLE of the portion describing
-     STATE-NUM.  */
-static const yytype_int16 yypact[] =
-{
-    -694,    81,  1776,  -694,  5946,  5946,   -75,  5946,  5946,  5946,
-    5946,  5946,  5946,  5946,   395,   395,  5946,  5946,  5946,  5946,
-    5946,  5946,  5946,  5946,  4616,   466,  5946,   -73,   -71,  -694,
-    -694,    65,  -694,  -694,  -694,    49,  -694,  5946,  4474,   -68,
-     -59,   -45,   -35,   -18,  4749,  4882,   129,  -694,   147,  5015,
-     -11,  5946,   -13,   -19,    -4,   110,   113,    88,    92,   112,
-     116,  -694,  -694,   124,   137,  -694,  -694,  -694,  -694,  -694,
-    -694,  -694,  -694,  -694,   153,  -694,  -694,   208,  -694,  -694,
-    5946,  6079,  -694,  -694,   141,   -50,  -694,    11,  -694,  -694,
-    -694,  -694,  -694,  -694,   245,   253,  -694,   176,   313,   284,
-     222,  -694,  -694,  6451,  -694,   227,  1240,   191,  -694,   224,
-     316,   257,  -694,    80,  -694,    -6,  -694,  -694,   320,   323,
-    -694,   325,   333,   297,   249,  -694,   313,  7252,  7252,  5946,
-    7252,  7252,  7358,  -694,  -694,   357,  -694,  -694,  -694,   251,
-     208,   343,    64,   267,  -694,  -694,   273,  -694,  -694,  -694,
-    -694,  -694,  -694,  -694,  -694,  -694,   395,  7047,   255,   415,
-     272,   208,   274,   281,   269,  -694,   285,   311,   -22,    -6,
-    -694,  5148,  -694,  5946,  -694,  5946,  5946,    13,  7252,   351,
-    5946,  5946,  5946,   382,  5946,  -694,  6502,  -694,  6545,   296,
-     447,  -694,   298,  7252,  1217,  -694,  6588,   208,   -30,    19,
-    -694,  -694,   212,    20,  -694,   449,    21,   313,  -694,  -694,
-     395,   395,   395,   326,   402,  4616,   208,  -694,   -57,    98,
-     131,  7090,   148,   328,  6639,   334,  1918,  5946,   398,  1272,
-     422,  -694,   378,   380,  -694,  -694,   -33,  5946,   -39,  5946,
-    5946,  5946,  5281,  5946,  5946,  5946,  5946,  5946,  5946,  5946,
-    5946,  5946,  5946,  5946,  5946,  5946,  5946,  5946,  5946,  5946,
-    5946,  5946,  5946,  5946,  5946,  5946,   466,  -694,  -694,  -694,
-    5414,  5946,  5946,  5946,  5946,  5946,  5946,  5946,  5946,  5946,
-    5946,  5946,  1272,    -7,  5946,    57,  5946,  5946,   141,    -9,
-    5946,  5946,  5946,   344,  6682,   208,    73,   334,    12,    23,
-    -694,  -694,  5547,  -694,  5680,  -694,   208,   274,    47,  1272,
-    -694,    47,    57,   -16,  -694,  6725,  6775,  7252,   345,   347,
-    5946,  -694,   350,  6818,   352,   519,  7252,   440,   758,   523,
-      29,  6861,  -694,  -694,  -694,   895,  -694,  -694,  2060,  -694,
-     -12,   462,   -13,  -694,  5946,  -694,  -694,   -19,  -694,   895,
-     465,  -694,   385,    31,  -694,  -694,  -694,    32,   387,   388,
-     389,  -694,    33,  -694,   396,   109,  1492,  -694,  -694,  1272,
-    5946,  -694,  -694,  -694,   399,  -694,  -694,  -694,  -694,  -694,
-    1062,  -694,   395,  5946,   397,   549,  -694,  7252,   551,   185,
-     442,   185,   401,   408,   241,   403,   411,   412,   -16,    -6,
-    7294,  7333,  7358,  5946,  7194,  7383,  7406,  7428,  7449,  4669,
-    1472,  1626,  1626,  1626,  1626,  1626,   970,   970,   970,   970,
-     649,   649,   306,   306,   306,   357,   357,   357,  -694,   165,
-    7358,  7358,  7358,  7358,  7358,  7358,  7358,  7358,  7358,  7358,
-    7358,  7358,   414,   413,   417,   416,  -694,  5946,  -694,   419,
-     -10,  -694,   418,  6224,   421,   423,   424,  -694,   105,   411,
-     413,   395,  7252,   395,  7151,   274,  -694,   427,  -694,  -694,
-    -694,  3764,  -694,  -694,  7252,  5946,  3906,  5946,  5946,   395,
-     197,   895,   506,  4048,    22,   895,   895,   895,  -694,   425,
-     439,   208,   -38,   450,  -694,  -694,  -694,    78,   524,  -694,
-    -694,  6267,  -694,  -694,   589,   241,   395,   441,   395,  -694,
-    -694,  -694,   402,   402,   590,  -694,  1272,  -694,  1634,   443,
-     170,   431,   445,  -694,  -694,  7252,  -694,  1272,   895,   464,
-     208,   274,  -694,   185,   454,   613,  -694,  -694,   241,  -694,
-    -694,   461,   617,    28,  -694,  -694,  -694,  1272,  1272,   -16,
-    7383,  5946,   466,  -694,  -694,  1272,  1272,  -694,  6310,  1272,
-     564,   566,  -694,  5946,  5946,  -694,  -694,  -694,  -694,  -694,
-    -694,  -694,  5813,  -694,   509,  -694,  -694,  6911,  -694,  -694,
-    -694,   474,  7252,   511,   395,   511,  -694,  -694,   628,  -694,
-    -694,  -694,   479,   480,  -694,  -694,  -694,   518,   482,   639,
-     895,   208,    -3,   575,   490,   488,    78,  -694,  -694,  -694,
-    -694,   895,   495,  -694,  -694,  -694,    37,  -694,  5946,   496,
-    -694,  -694,   497,  -694,  -694,   208,   274,   613,  -694,   185,
-     626,   499,   553,   276,   -14,  -694,   587,   656,   508,   512,
-    7383,   269,   513,   514,  -694,   516,  5946,  5946,   545,   515,
-    6363,   395,  7252,    57,  -694,  3622,   271,   510,  2202,  5946,
-     197,   521,  -694,   526,   895,  2344,  -694,   314,  -694,    14,
-     895,  -694,   895,  -694,   537,   122,  -694,   185,  -694,  -694,
-    -694,  -694,  -694,   553,  -694,  7358,  -694,  -694,   274,   723,
-    -694,   606,   185,  -694,  -694,  -694,  -694,  -694,  -694,  -694,
-    -694,  -694,  -694,   624,   297,   498,  -694,    24,   678,   544,
-     678,    43,   693,  -694,   895,  -694,  -694,  -694,  -694,  -694,
-    -694,   540,   541,    57,  -694,  -694,  -694,  -694,  -694,   289,
-     554,  4474,  -694,  -694,   556,   550,  -694,  4190,  4190,  -694,
-     557,   337,   559,  5946,    35,   149,  -694,  -694,   596,  -694,
-     637,  2486,   678,  -694,   703,    17,  -694,   712,    27,  -694,
-    -694,   651,  -694,    83,   563,    42,   565,   -14,   715,   895,
-    -694,  -694,  -694,   419,   570,   706,   662,  5946,  -694,  -694,
-    4332,  -694,  -694,  -694,  -694,  -694,   581,  -694,  6408,  -694,
-    -694,  -694,  -694,   895,   583,  -694,   582,   895,   185,  -694,
-     193,  -694,   895,   671,  -694,   313,   737,   276,  -694,  -694,
-     674,  -694,    38,  -694,   739,   895,  -694,  -694,  5946,  -694,
-     592,  6954,  -694,  -694,  -694,  2628,  -694,  -694,  3622,  -694,
-     595,  -694,  -694,  -694,   661,   597,   193,  -694,   598,   665,
-     609,   602,   619,  -694,   754,   694,   895,  -694,  2770,  -694,
-      45,  -694,  2912,   895,  -694,  6997,  3622,  -694,  4474,  3054,
-     620,  3622,  -694,  3196,  -694,  -694,  -694,   353,   185,  -694,
-     709,   895,   629,  -694,  -694,   708,  -694,  -694,  -694,   768,
-    -694,   635,  -694,  3338,  -694,   724,   725,   793,  -694,  -694,
-    -694,   241,  -694,  -694,  -694,  -694,  -694,   185,   644,  3622,
-    -694,   678,   203,  -694,  -694,  -694,  3480,  -694
-};
-
-  /* YYDEFACT[STATE-NUM] -- Default reduction number in state STATE-NUM.
-     Performed when YYTABLE does not specify something else to do.  Zero
-     means the default is an error.  */
-static const yytype_uint16 yydefact[] =
-{
-       4,     0,     2,     1,     0,     0,     0,     0,     0,     0,
-       0,     0,     0,     0,     0,     0,     0,     0,     0,     0,
-       0,     0,     0,     0,   412,     0,     0,   320,     0,   325,
-     326,     5,   347,   394,    52,   327,   279,     0,     0,     0,
-       0,     0,     0,     0,     0,     0,     0,   291,     0,     0,
-       0,     0,     0,     0,   306,     0,     0,     0,     0,     0,
-       0,    80,    86,     0,     0,   331,   332,   334,   328,   329,
-      32,    33,    34,   336,     0,   335,   330,     0,    83,   333,
-     284,     0,    59,    25,   405,   349,     3,     0,     7,    30,
-       8,     9,    73,    74,     0,     0,   362,     0,    75,   386,
-       0,   352,   280,     0,   361,     0,   363,     0,   390,     0,
-     385,   367,   384,   387,   393,     0,   269,   264,   281,   282,
-     265,   348,     5,   306,     0,   284,    75,   424,   425,     0,
-     427,   428,   283,   250,   251,   252,   253,     5,   306,     0,
-       0,     0,   307,     0,   231,   365,     0,   233,   270,   271,
-     272,   273,   274,   275,   276,   278,     0,   417,     0,   355,
-       0,     0,   307,   313,   323,   314,     0,   316,   387,     0,
-     218,     0,   277,     0,    31,   396,   396,     0,   209,     0,
-       0,   210,     0,     0,     0,    42,     0,    44,     0,     0,
-       0,    46,   362,     0,   363,    25,     0,     0,    18,     0,
-      17,   153,     0,     0,   152,   158,     0,    75,    81,    82,
-       0,     0,     0,     0,   411,   412,     0,     4,     0,   351,
-     362,     0,   363,     0,     0,   265,     0,     0,     0,   145,
-       0,    15,    84,    87,    54,    76,     0,   396,     0,     0,
-       0,     0,     0,     0,     0,     0,     0,     0,     0,     0,
-       0,     0,     0,     0,     0,     0,     0,     0,     0,     0,
-       0,     0,     0,     0,     0,     0,     0,    53,   230,   232,
-       0,     0,     0,     0,     0,     0,     0,     0,     0,     0,
-       0,     0,   145,     0,   396,     0,   396,     0,   406,   389,
-     396,   396,   396,     0,     0,     0,   309,     0,     0,     0,
-     421,   364,     0,   439,   356,   413,     0,   309,     0,   145,
-     440,     0,     0,   389,   321,     0,     0,   397,     0,     0,
-       0,    51,     0,     0,     0,   211,   213,   362,   363,     0,
-       0,     0,    43,    45,    63,     0,    47,    48,     0,    62,
-      20,     0,     0,    14,     0,   154,   363,     0,    49,     0,
-       0,    50,     0,     0,    70,    72,   429,     0,     0,     0,
-       0,   409,     0,   408,     0,   350,     0,    11,     4,   145,
-       0,   432,   431,   388,     0,    35,    24,    26,    27,    28,
-       0,     6,     0,     0,     0,   144,   146,   148,     0,     0,
-      89,     0,     0,     0,   136,     0,   441,   379,   377,     0,
-     236,   238,   237,     0,     0,   268,   234,   235,   239,   241,
-     240,   256,   257,   254,   255,   262,   258,   259,   260,   261,
-     248,   249,   243,   244,   242,   245,   246,   247,   263,     0,
-     215,   219,   220,   221,   222,   223,   224,   225,   226,   227,
-     228,   229,     0,   442,   380,     0,   403,     0,   399,   376,
-     398,   402,     0,     0,     0,     0,     0,   426,   308,     0,
-       0,     0,   416,     0,   415,   308,   379,     0,   380,   318,
-     322,     0,   437,   435,   208,     0,     0,   210,     0,     0,
-       0,     0,     0,     0,     0,     0,     0,   353,   327,     0,
-       0,     0,   338,     0,   337,    23,   345,     0,     0,    19,
-      16,     0,   151,   159,   156,   136,     0,     0,     0,   422,
-     423,    10,   411,   411,     0,   438,   145,    13,     0,     0,
-     362,   363,     0,   395,   150,   149,   298,     0,     0,     0,
-       0,   310,    85,     0,     0,    88,    91,   161,   136,   139,
-     140,     0,   124,     0,   137,   138,   383,   145,   145,   378,
-     267,     0,     0,   216,   305,   145,   145,   382,     0,   145,
-     375,   374,   369,   396,     0,   391,   392,   434,   433,   436,
-     420,   419,     0,   324,   315,    25,   116,     0,    25,   114,
-      38,     0,   212,    93,     0,    93,    95,   103,     0,    25,
-     101,    58,   109,   109,    41,   341,   342,   360,     0,   355,
-     353,     0,   340,     0,     0,     0,    67,    65,    61,    21,
-     155,     0,     0,    71,    55,   430,     0,   407,     0,     0,
-      12,   300,     0,   147,    22,     0,   312,    90,   161,     0,
-     192,     0,   292,   136,     0,   135,     0,   126,     0,     0,
-     266,   323,     0,     0,   404,     0,   396,   396,   366,     0,
-       0,     0,   414,     0,   317,   118,   120,     0,     0,   210,
-       0,     0,    96,     0,     0,     0,   109,     0,   109,     0,
-       0,   344,   356,   354,     0,   339,   346,     0,    25,    64,
-      60,    68,   157,   292,   410,   214,   299,    29,   311,   192,
-      92,     0,     0,   199,   200,   201,   198,   197,   196,   191,
-      79,   160,   164,     0,     0,   190,   194,     0,   141,     0,
-     141,     0,   127,   134,     0,   301,   304,   217,   302,   303,
-     373,     0,     0,     0,   368,   400,   401,   418,   319,   122,
-       0,     0,    36,    39,     0,     0,    94,     0,     0,   104,
-       0,     0,     0,     0,     0,     0,   105,   359,   358,   343,
-       0,     0,   141,    78,     0,     0,   168,   204,     0,   165,
-     195,     0,   163,     0,     0,     0,     0,     0,   130,     0,
-     129,   371,   372,   376,     0,     0,     0,     0,   121,   115,
-       0,    25,    99,    57,    56,   102,     0,   107,     0,   112,
-     113,    25,   106,     0,     0,    69,     0,     0,     0,   170,
-     172,   167,     0,     0,   162,    75,     0,     0,   143,    25,
-       0,   296,     0,    25,   131,     0,   128,   370,     0,    25,
-       0,     0,    25,    97,    40,     0,   108,    25,   111,   357,
-       0,    25,   207,   169,     5,     0,   173,   174,     0,     0,
-     182,     0,     0,   205,   202,     0,     0,   142,     0,   297,
-       0,   293,     0,     0,   133,     0,   123,    37,     0,     0,
-       0,   110,    25,     0,   171,   175,   176,   186,     0,   177,
-       0,     0,     0,   206,    77,     0,   294,   285,   132,     0,
-     117,     0,   100,     0,   286,     0,   185,   178,   179,   183,
-     203,   136,   295,    25,    98,    66,   184,     0,     0,   119,
-     180,   141,     0,   188,    25,   166,     0,   189
-};
-
-  /* YYPGOTO[NTERM-NUM].  */
-static const yytype_int16 yypgoto[] =
-{
-    -694,  -694,  -195,    -5,  -694,  -694,   467,  -694,  -183,  -694,
-      16,  -694,  -694,   201,  -694,   202,  -694,   312,     2,     6,
-    -125,  -694,  -694,  -694,  -694,  -694,  -694,  -694,   288,   232,
-     162,  -694,    86,  -694,  -694,  -694,  -341,    40,  -694,  -694,
-    -694,  -694,  -694,  -494,  -694,  -610,   192,  -678,  -693,  -252,
-    -694,   302,  -694,   483,  -694,   214,  -694,  -694,  -694,  -694,
-    -694,  -694,  -694,     7,  -694,  -694,  -694,  -694,  -694,  -694,
-    -694,  -694,  -694,  -694,  -690,  -694,  -694,  -694,  -463,  -694,
-     -46,   752,    -2,   161,  -694,  -694,   205,  -358,  -250,  -694,
-    -694,  -694,  -694,   204,  -271,  -231,  -694,  -694,   247,   250,
-    -694,   904,   650,  -369,   360,   307,  -694,  -694,  -694,  -694,
-      82,  -232,  -694,   789,  -694,  -694,   -23,   -20,  -694,  -153,
-    -305,  -694,  -694,     1,   339,   349,   643,  -694,  -694,  -694,
-    -694,  -694,  -694,   -31,  -694
-};
-
-  /* YYDEFGOTO[NTERM-NUM].  */
-static const yytype_int16 yydefgoto[] =
-{
-      -1,     1,     2,    85,    86,   199,   200,    87,   226,   376,
-     377,    89,   606,   607,   680,   608,   353,   354,   378,   379,
-     236,    92,    93,    94,   390,    95,   392,   534,   535,   661,
-     585,   824,   783,   591,   330,   594,   667,   791,   580,   656,
-     729,   732,   776,   541,   542,   637,   543,   544,   764,   384,
-     385,   386,   203,   204,   206,   630,   701,   805,   702,   755,
-     801,   835,   836,   837,   838,   887,   839,   840,   841,   885,
-     905,   703,   704,   705,   706,   758,   707,   177,   324,   325,
-      96,    97,   126,   710,   812,    99,   100,   545,   164,   165,
-     574,   654,   172,   310,   101,   597,   496,   102,   598,   305,
-     599,   103,   104,   300,   105,   106,   648,   724,   560,   561,
-     562,   107,   108,   109,   110,   111,   112,   113,   114,   318,
-     449,   450,   451,   115,   362,   363,   158,   159,   116,   357,
-     117,   118,   119,   120,   121
-};
-
-  /* YYTABLE[YYPACT[STATE-NUM]] -- What to do in state STATE-NUM.  If
-     positive, shift that token.  If negative, reduce the rule whose
-     number is the opposite.  If YYTABLE_NINF, syntax error.  */
-static const yytype_int16 yytable[] =
-{
-      98,   293,   167,   192,    90,   168,   397,   469,    91,   142,
-     142,   612,   338,   524,   581,   760,   428,   766,    88,   230,
-     162,   320,   366,   319,   712,   798,   169,   342,   347,   350,
-     442,   532,   761,   536,   220,   803,   396,   482,    33,   506,
-     508,   513,   393,   286,   631,   513,   850,   198,   592,   286,
-     225,   444,   207,   448,   179,   563,   286,   467,   201,   796,
-     634,   789,   137,   635,   494,   341,   397,   444,   443,   218,
-      33,    33,   219,   205,   810,   767,   466,   875,   494,   468,
-     448,     3,   352,   498,   395,   808,   129,   459,   171,    33,
-     173,   174,   570,   180,   571,   289,   228,  -307,   460,    47,
-      33,   768,   181,   228,   495,   635,   367,   368,   807,  -307,
-     297,   229,   743,   744,   176,   228,   182,   519,   503,   811,
-     635,   207,   876,   228,    33,  -381,   183,    84,   394,   847,
-     175,   445,   446,   452,    33,   296,   327,   454,   455,   456,
-     197,   228,   287,   184,  -309,   286,   636,   202,   287,   313,
-     228,   142,  -378,   195,   564,   287,   307,   814,   137,    84,
-     288,   270,   271,   272,   273,   274,   275,   276,   277,   278,
-     279,   280,   281,   518,   231,   536,   321,   886,    84,   746,
-     799,   800,   343,   348,   351,   604,   593,   762,   636,    84,
-     804,   483,   340,   507,   509,   514,   735,   142,   790,   684,
-     851,  -365,  -365,   636,   189,   142,   142,   142,   902,   142,
-     494,   365,   539,    84,   494,   494,   494,   228,   398,   143,
-     143,   447,   190,    84,    98,   229,   228,  -381,   137,   584,
-     163,   552,   208,   529,   369,   209,   530,   605,   540,   399,
-     137,  -377,    33,   167,   287,  -309,   168,   743,   744,   210,
-     587,   228,   669,   211,   595,   596,  -308,   494,   228,   369,
-     137,   162,   228,   398,   619,   398,   516,   169,   834,  -308,
-     516,   690,   137,   212,    33,   228,   138,   213,   398,   398,
-     268,   269,   727,   137,   399,   214,   399,   137,   398,    33,
-     458,   398,   398,  -287,  -287,   638,   639,   624,   215,   399,
-     399,   465,   641,   642,   643,   227,   216,   645,   138,   399,
-    -288,  -288,   399,   399,   792,   139,   137,   217,   140,   750,
-     232,   145,   145,   138,   520,   741,   141,   745,   233,   494,
-     492,    84,  -289,  -289,   756,   529,    98,   198,   530,   234,
-     494,   730,   731,   529,   492,   235,   530,   139,   728,   237,
-     140,   137,   282,   263,   264,   265,   194,   266,   141,   774,
-     775,   143,   139,    84,    98,   140,   903,   904,    90,   238,
-     539,   283,    91,   141,   144,   147,   344,   142,    84,   549,
-     682,   284,    88,   285,   531,   290,   531,   222,   291,   531,
-     292,   529,   655,   494,   530,   658,   540,   898,   175,   494,
-      47,   494,   216,  -125,   295,   539,   665,   143,   266,    25,
-     649,   742,   743,   744,   298,   143,   143,   143,   773,   143,
-     299,   448,   303,   304,   142,   306,   529,   228,   308,   530,
-     309,   540,   311,   739,   786,   743,   744,   312,   322,   747,
-     833,   748,   842,   494,   270,   271,   272,   273,   274,   275,
-     276,   277,   278,   279,   280,   281,   142,   329,   142,   334,
-     335,   336,   349,   301,   693,   694,   695,   696,   697,   698,
-     137,   163,    33,   381,   142,   142,   492,   137,   842,    33,
-     492,   492,   492,   770,  -365,  -365,   602,   576,   359,   328,
-     371,   448,   579,   721,   722,   751,   373,   388,   494,   590,
-     531,   142,   389,   142,   391,   394,   138,   142,   142,   346,
-     888,   475,   472,   138,   473,   477,    98,   355,   356,   358,
-      90,   361,   494,   492,    91,   626,   494,   478,   531,   167,
-     360,   494,   168,   531,    88,   479,   481,   499,   816,   900,
-     493,   137,   504,    33,   494,   139,   505,   162,   140,   510,
-     512,   511,   139,   169,   493,   140,   141,   527,   515,   526,
-     522,    84,   829,   141,   528,   537,   832,   533,    84,   538,
-     546,   843,   547,   548,   555,   494,   554,   138,   556,   142,
-     559,   588,   494,   557,   854,   565,   600,   143,   567,   573,
-     568,   569,   601,  -290,  -290,   492,   675,   603,   825,   609,
-     494,  -193,   611,   618,   614,   621,   492,   622,   828,   693,
-     694,   695,   696,   697,   698,   873,   160,   625,   628,   161,
-     688,   629,   878,   632,   531,   633,   848,   141,   531,   646,
-     852,   647,    84,   398,   143,   653,   856,   659,   660,   859,
-     890,   664,   666,   668,   861,   670,   142,   672,   863,   671,
-     676,   677,   678,    98,   399,   142,    98,   683,   686,   492,
-     687,   708,   709,    98,   713,   492,   143,   492,   143,   714,
-     715,   723,   531,   733,   716,   718,   719,   521,   720,   883,
-     845,   754,   725,   737,   143,   143,   493,   531,   738,   301,
-     493,   493,   493,   260,   261,   262,   263,   264,   265,   749,
-     266,   757,   759,   398,   763,   765,   769,   771,   772,   492,
-     899,   143,   780,   143,   794,   777,   797,   143,   143,   779,
-     785,   906,   787,   793,   399,   802,   806,   809,   815,   813,
-     691,   818,   819,   493,   820,   692,   553,   693,   694,   695,
-     696,   697,   698,   699,   826,   830,   831,   778,   844,    98,
-     846,   849,   853,   782,   782,   857,  -181,   163,   531,   862,
-     867,   866,   864,   868,   492,   869,   870,   871,   301,   872,
-     301,   270,   271,   272,   273,   274,   275,   276,   277,   278,
-     279,   280,   281,   882,   889,   892,   583,   586,   492,   143,
-     891,   700,   492,   531,   893,   531,   823,   492,   894,   896,
-    -187,   897,   531,   146,   146,   493,   901,   679,   681,   500,
-     492,  -365,  -365,   355,   166,   615,   493,   663,   613,   361,
-     361,   627,   736,    98,   784,   711,    98,   691,   827,   623,
-     502,   531,   692,   223,   693,   694,   695,   696,   697,   698,
-     699,   492,   689,   865,   752,   717,    98,   674,   492,   673,
-      98,   616,   345,   480,    98,   817,   143,    98,   364,    98,
-       0,    98,   617,   531,     0,   143,   492,     0,     0,   493,
-       0,     0,     0,     0,   880,   493,     0,   493,     0,     0,
-       0,    98,     0,     0,     0,     0,   531,     0,   753,     0,
-       0,   662,   531,     0,     0,     0,     0,    98,     0,     0,
-       0,     0,     0,     0,    98,     0,     0,     0,   127,   128,
-       0,   130,   131,   132,   133,   134,   135,   136,     0,   493,
-     148,   149,   150,   151,   152,   153,   154,   155,   157,     0,
-     170,     0,     0,     0,     0,     0,     0,     0,     0,   485,
-     486,   178,     0,     0,     0,   146,     0,     0,   186,   188,
-       0,     0,     0,   193,     0,   196,     0,     0,   301,     0,
-     487,     0,     0,     0,     0,     0,     0,   586,    29,    30,
-     137,     0,     0,     0,   493,     0,     0,     0,   488,     0,
-       0,     0,     0,     0,   221,   224,     0,     0,     0,     0,
-       0,   146,     0,     0,     0,     0,     0,     0,   493,   146,
-     146,   146,   493,   146,     0,     0,   138,   493,  -382,  -382,
-    -382,  -382,   258,   259,   260,   261,   262,   263,   264,   265,
-     493,   266,     0,     0,   489,    65,    66,    67,    68,    69,
-       0,     0,     0,   294,     0,     0,     0,     0,     0,    73,
-       0,     0,     0,     0,     0,   490,    75,    76,   491,     0,
-       0,   493,    79,     0,     0,   166,     0,     0,   493,     0,
-       0,     0,     0,     0,     0,     0,     0,     0,     0,     0,
-       0,   239,   240,   241,     0,   315,   493,   316,     0,   317,
-     317,     0,     0,     0,   323,   326,   193,   242,   331,   243,
-     244,   245,   246,   247,   248,   249,   250,   251,   252,   253,
-     254,   255,   256,   257,   258,   259,   260,   261,   262,   263,
-     264,   265,     0,   266,     0,     0,     0,     0,     0,   157,
-       0,     0,     0,     0,     0,     0,     0,     0,     0,     0,
-       0,   380,     0,   387,     0,     0,     0,     0,     0,     0,
-       0,   317,     0,   400,   401,   402,   404,   405,   406,   407,
-     408,   409,   410,   411,   412,   413,   414,   415,   416,   417,
-     418,   419,   420,   421,   422,   423,   424,   425,   426,   427,
-       0,   146,     0,     0,   430,   431,   432,   433,   434,   435,
-     436,   437,   438,   439,   440,   441,   387,     0,   317,     0,
-     317,   453,     0,     0,   317,   317,   317,     0,     0,     0,
-       0,     0,     0,     0,     0,     0,   462,     0,   464,     0,
-       0,     0,     0,   387,     0,     0,     0,     0,   146,     0,
-       0,     0,     0,     0,   474,     0,     0,   523,     0,     0,
-     270,   271,   272,   273,   274,   275,   276,   277,   278,   279,
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-       0,    13,    14,    15,    16,    17,    18,     0,     0,    19,
-      20,    21,    22,    23,    24,    25,    26,    27,     0,     0,
-       0,     0,    29,    30,   122,    32,    33,     0,     0,     0,
-       0,     0,    35,    36,     0,     0,     0,     0,     0,     0,
-       0,     0,     0,     0,     0,     0,     0,     0,     0,     0,
-       0,     0,    47,     0,     0,     0,     0,     0,     0,     0,
-     123,     0,     0,     0,     0,     0,     0,     0,    58,    59,
-       0,     0,     0,     0,     0,     0,     0,    63,    64,    65,
-      66,    67,    68,    69,     0,     0,     0,     0,     0,     0,
-       0,     0,     0,    73,     0,     0,     0,     0,     0,   124,
-      75,    76,    77,   239,   240,   241,    79,    80,     0,     0,
-      81,     0,     0,     0,     0,    84,     0,     0,     0,   242,
-       0,   243,   244,   245,   246,   247,   248,   249,   250,   251,
-     252,   253,   254,   255,   256,   257,   258,   259,   260,   261,
-     262,   263,   264,   265,     0,   266,   239,   240,   241,     0,
-       0,     0,     0,     0,     0,     0,     0,     0,     0,     0,
-       0,     0,   242,     0,   243,   244,   245,   246,   247,   248,
-     249,   250,   251,   252,   253,   254,   255,   256,   257,   258,
-     259,   260,   261,   262,   263,   264,   265,     0,   266,   239,
-     240,   241,     0,     0,     0,     0,     0,     0,     0,     0,
-       0,     0,     0,     0,     0,   242,     0,   243,   244,   245,
-     246,   247,   248,   249,   250,   251,   252,   253,   254,   255,
-     256,   257,   258,   259,   260,   261,   262,   263,   264,   265,
-       0,   266,     0,     0,     0,     0,     0,     0,     0,     0,
-       0,     0,   239,   240,   241,     0,     0,     0,     0,     0,
-       0,     0,     0,     0,     0,     0,     0,     0,   242,   566,
-     243,   244,   245,   246,   247,   248,   249,   250,   251,   252,
-     253,   254,   255,   256,   257,   258,   259,   260,   261,   262,
-     263,   264,   265,     0,   266,     0,     0,   239,   240,   241,
-       0,     0,     0,     0,     0,     0,     0,     0,     0,     0,
-       0,     0,   610,   242,   789,   243,   244,   245,   246,   247,
-     248,   249,   250,   251,   252,   253,   254,   255,   256,   257,
-     258,   259,   260,   261,   262,   263,   264,   265,     0,   266,
-     239,   240,   241,     0,     0,     0,     0,     0,     0,     0,
-       0,     0,     0,     0,     0,   644,   242,     0,   243,   244,
-     245,   246,   247,   248,   249,   250,   251,   252,   253,   254,
-     255,   256,   257,   258,   259,   260,   261,   262,   263,   264,
-     265,     0,   266,     0,     0,     0,     0,     0,     0,     0,
-       0,   239,   240,   241,     0,     0,     0,     0,     0,     0,
-       0,     0,     0,     0,     0,     0,     0,   242,   726,   243,
-     244,   245,   246,   247,   248,   249,   250,   251,   252,   253,
-     254,   255,   256,   257,   258,   259,   260,   261,   262,   263,
-     264,   265,     0,   266,   239,   240,   241,     0,     0,     0,
-       0,     0,     0,     0,     0,     0,     0,     0,     0,     0,
-     242,   790,   243,   244,   245,   246,   247,   248,   249,   250,
-     251,   252,   253,   254,   255,   256,   257,   258,   259,   260,
-     261,   262,   263,   264,   265,     0,   266,   239,   240,   241,
-       0,     0,     0,     0,     0,     0,     0,     0,     0,     0,
-       0,     0,     0,   242,   267,   243,   244,   245,   246,   247,
-     248,   249,   250,   251,   252,   253,   254,   255,   256,   257,
-     258,   259,   260,   261,   262,   263,   264,   265,     0,   266,
-       0,     0,     0,     0,     0,     0,     0,     0,   239,   240,
-     241,     0,     0,     0,     0,     0,     0,     0,     0,     0,
-       0,     0,     0,     0,   242,   332,   243,   244,   245,   246,
-     247,   248,   249,   250,   251,   252,   253,   254,   255,   256,
-     257,   258,   259,   260,   261,   262,   263,   264,   265,     0,
-     266,   239,   240,   241,     0,     0,     0,     0,     0,     0,
-       0,     0,     0,     0,     0,     0,     0,   242,   333,   243,
-     244,   245,   246,   247,   248,   249,   250,   251,   252,   253,
-     254,   255,   256,   257,   258,   259,   260,   261,   262,   263,
-     264,   265,     0,   266,   239,   240,   241,     0,     0,     0,
-       0,     0,     0,     0,     0,     0,     0,     0,     0,     0,
-     242,   339,   243,   244,   245,   246,   247,   248,   249,   250,
-     251,   252,   253,   254,   255,   256,   257,   258,   259,   260,
-     261,   262,   263,   264,   265,     0,   266,     0,     0,     0,
-       0,     0,     0,     0,   239,   240,   241,     0,     0,     0,
-       0,     0,     0,     0,     0,     0,     0,     0,     0,     0,
-     242,   372,   243,   244,   245,   246,   247,   248,   249,   250,
-     251,   252,   253,   254,   255,   256,   257,   258,   259,   260,
-     261,   262,   263,   264,   265,     0,   266,   239,   240,   241,
-       0,     0,     0,     0,     0,     0,     0,     0,     0,     0,
-       0,     0,     0,   242,   457,   243,   244,   245,   246,   247,
-     248,   249,   250,   251,   252,   253,   254,   255,   256,   257,
-     258,   259,   260,   261,   262,   263,   264,   265,     0,   266,
-     239,   240,   241,     0,     0,     0,     0,     0,     0,     0,
-       0,     0,     0,     0,     0,     0,   242,   470,   243,   244,
-     245,   246,   247,   248,   249,   250,   251,   252,   253,   254,
-     255,   256,   257,   258,   259,   260,   261,   262,   263,   264,
-     265,     0,   266,     0,     0,     0,     0,     0,     0,     0,
-     239,   240,   241,     0,     0,     0,     0,     0,     0,     0,
-       0,     0,     0,     0,     0,     0,   242,   471,   243,   244,
-     245,   246,   247,   248,   249,   250,   251,   252,   253,   254,
-     255,   256,   257,   258,   259,   260,   261,   262,   263,   264,
-     265,     0,   266,   239,   240,   241,     0,     0,     0,     0,
-       0,     0,     0,     0,     0,     0,     0,     0,     0,   242,
-     476,   243,   244,   245,   246,   247,   248,   249,   250,   251,
-     252,   253,   254,   255,   256,   257,   258,   259,   260,   261,
-     262,   263,   264,   265,     0,   266,   239,   240,   241,     0,
-       0,     0,     0,     0,     0,     0,     0,     0,     0,     0,
-       0,     0,   242,   484,   243,   244,   245,   246,   247,   248,
-     249,   250,   251,   252,   253,   254,   255,   256,   257,   258,
-     259,   260,   261,   262,   263,   264,   265,     0,   266,     0,
-       0,     0,     0,     0,     0,     0,   239,   240,   241,     0,
-       0,     0,     0,     0,     0,     0,     0,     0,     0,     0,
-       0,     0,   242,   657,   243,   244,   245,   246,   247,   248,
-     249,   250,   251,   252,   253,   254,   255,   256,   257,   258,
-     259,   260,   261,   262,   263,   264,   265,     0,   266,   239,
-     240,   241,     0,     0,     0,     0,     0,     0,     0,     0,
-       0,     0,     0,     0,     0,   242,   858,   243,   244,   245,
-     246,   247,   248,   249,   250,   251,   252,   253,   254,   255,
-     256,   257,   258,   259,   260,   261,   262,   263,   264,   265,
-       0,   266,     0,     0,     0,     0,     0,     0,     0,     0,
-       0,     0,     0,     0,     0,     0,     0,     0,     0,   879,
-     239,   240,   241,     0,     0,     0,     0,     0,     0,     0,
-       0,     0,     0,     0,   302,     0,   242,     0,   243,   244,
-     245,   246,   247,   248,   249,   250,   251,   252,   253,   254,
-     255,   256,   257,   258,   259,   260,   261,   262,   263,   264,
-     265,     0,   266,   239,   240,   241,     0,     0,     0,     0,
-       0,     0,     0,     0,     0,     0,     0,   370,     0,   242,
-     551,   243,   244,   245,   246,   247,   248,   249,   250,   251,
-     252,   253,   254,   255,   256,   257,   258,   259,   260,   261,
-     262,   263,   264,   265,     0,   266,     0,     0,     0,     0,
-       0,     0,     0,     0,     0,     0,     0,     0,     0,     0,
-       0,   239,   240,   241,     0,     0,     0,     0,     0,     0,
-       0,     0,     0,     0,     0,     0,     0,   242,   572,   243,
-     244,   245,   246,   247,   248,   249,   250,   251,   252,   253,
-     254,   255,   256,   257,   258,   259,   260,   261,   262,   263,
-     264,   265,     0,   266,   240,   241,     0,     0,     0,     0,
-       0,     0,     0,     0,     0,     0,     0,     0,     0,   242,
-       0,   243,   244,   245,   246,   247,   248,   249,   250,   251,
-     252,   253,   254,   255,   256,   257,   258,   259,   260,   261,
-     262,   263,   264,   265,   241,   266,     0,     0,     0,     0,
-       0,     0,     0,     0,     0,     0,     0,     0,   242,     0,
-     243,   244,   245,   246,   247,   248,   249,   250,   251,   252,
-     253,   254,   255,   256,   257,   258,   259,   260,   261,   262,
-     263,   264,   265,   242,   266,   243,   244,   245,   246,   247,
-     248,   249,   250,   251,   252,   253,   254,   255,   256,   257,
-     258,   259,   260,   261,   262,   263,   264,   265,     0,   266,
-     243,   244,   245,   246,   247,   248,   249,   250,   251,   252,
-     253,   254,   255,   256,   257,   258,   259,   260,   261,   262,
-     263,   264,   265,     0,   266,   245,   246,   247,   248,   249,
-     250,   251,   252,   253,   254,   255,   256,   257,   258,   259,
-     260,   261,   262,   263,   264,   265,     0,   266,   246,   247,
-     248,   249,   250,   251,   252,   253,   254,   255,   256,   257,
-     258,   259,   260,   261,   262,   263,   264,   265,     0,   266,
-     247,   248,   249,   250,   251,   252,   253,   254,   255,   256,
-     257,   258,   259,   260,   261,   262,   263,   264,   265,     0,
-     266
-};
-
-static const yytype_int16 yycheck[] =
-{
-       2,   126,    25,    49,     2,    25,   238,   312,     2,    14,
-      15,   505,   195,   382,   477,   705,   266,   710,     2,     8,
-      25,     8,   217,   176,   634,     8,    25,     8,     8,     8,
-     282,   389,     8,   391,    80,     8,    75,     8,    77,     8,
-       8,     8,    75,    65,   538,     8,     8,    52,    26,    65,
-      81,   283,    54,   285,    38,    65,    65,   309,    77,   752,
-      32,    26,    75,    77,   335,    95,   298,   299,    75,    74,
-      77,    77,    77,    77,    32,    32,   308,    32,   349,   311,
-     312,     0,   207,    95,   237,   763,   161,    75,   161,    77,
-     161,    26,   461,   161,   463,   115,   153,   147,    75,   103,
-      77,   711,   161,   153,   335,    77,   163,   164,    25,   147,
-     141,   161,    98,    99,    65,   153,   161,   369,   349,    77,
-      77,   123,    77,   153,    77,   147,   161,   166,   161,   807,
-      65,   284,    75,   286,    77,   140,   182,   290,   291,   292,
-     153,   153,   164,   161,   147,    65,   160,   166,   164,   169,
-     153,   156,   161,   164,   164,   164,   161,   767,    75,   166,
-     166,    13,    14,    15,    16,    17,    18,    19,    20,    21,
-      22,    23,    24,   368,   163,   533,   163,   867,   166,   165,
-     163,   164,   163,   163,   163,   107,   164,   163,   160,   166,
-     163,   162,   197,   162,   162,   162,   659,   202,   163,   162,
-     162,    53,    54,   160,    75,   210,   211,   212,   901,   214,
-     481,   216,   129,   166,   485,   486,   487,   153,   238,    14,
-      15,   164,    75,   166,   226,   161,   153,   147,    75,    32,
-      25,    66,   122,   150,   161,   122,   153,   159,   155,   238,
-      75,   161,    77,   266,   164,   147,   266,    98,    99,   161,
-     481,   153,   593,   161,   485,   486,   147,   528,   153,   161,
-      75,   266,   153,   283,   516,   285,   161,   266,    75,   147,
-     161,   629,    75,   161,    77,   153,   111,   161,   298,   299,
-      53,    54,   651,    75,   283,   161,   285,    75,   308,    77,
-     295,   311,   312,   162,   163,   547,   548,   528,   161,   298,
-     299,   306,   552,   555,   556,   164,   153,   559,   111,   308,
-     162,   163,   311,   312,   165,   150,    75,   164,   153,   677,
-      75,    14,    15,   111,   370,   666,   161,   668,    75,   600,
-     335,   166,   162,   163,   692,   150,   338,   342,   153,   163,
-     611,    70,    71,   150,   349,    32,   153,   150,   653,    65,
-     153,    75,   161,    47,    48,    49,    49,    51,   161,    70,
-      71,   156,   150,   166,   366,   153,   163,   164,   366,   147,
-     129,   147,   366,   161,    14,    15,   164,   382,   166,   399,
-     611,    65,   366,   126,   389,    65,   391,    80,    65,   394,
-      65,   150,   575,   664,   153,   578,   155,   891,    65,   670,
-     103,   672,   153,   162,   153,   129,   589,   202,    51,    66,
-     563,    97,    98,    99,   147,   210,   211,   212,   723,   214,
-     147,   653,   167,     8,   429,   153,   150,   153,   147,   153,
-     161,   155,   147,   664,    97,    98,    99,   126,    87,   670,
-     798,   672,   800,   714,    13,    14,    15,    16,    17,    18,
-      19,    20,    21,    22,    23,    24,   461,    75,   463,   163,
-      13,   163,    13,   156,   111,   112,   113,   114,   115,   116,
-      75,   266,    77,    75,   479,   480,   481,    75,   836,    77,
-     485,   486,   487,   714,    53,    54,   491,   471,   162,   182,
-     162,   723,   476,   646,   647,   678,   162,    75,   769,   483,
-     505,   506,   124,   508,   124,   161,   111,   512,   513,   202,
-     868,   161,   167,   111,   167,   163,   518,   210,   211,   212,
-     518,   214,   793,   528,   518,   530,   797,     8,   533,   552,
-     128,   802,   552,   538,   518,    95,    13,    75,   769,   897,
-     335,    75,    77,    77,   815,   150,   161,   552,   153,   162,
-     161,   163,   150,   552,   349,   153,   161,     8,   162,   162,
-     161,   166,   793,   161,    13,   164,   797,   125,   166,   161,
-     167,   802,   161,   161,   161,   846,   162,   111,   161,   584,
-     161,    75,   853,   167,   815,   167,   161,   382,   167,   162,
-     167,   167,   153,   162,   163,   600,   601,   147,   781,    75,
-     871,   103,    13,    13,   163,   162,   611,   162,   791,   111,
-     112,   113,   114,   115,   116,   846,   150,   153,   164,   153,
-     625,     8,   853,   162,   629,     8,   809,   161,   633,    65,
-     813,    65,   166,   653,   429,   126,   819,   163,   127,   822,
-     871,    13,   163,   163,   827,   127,   651,     8,   831,   167,
-      75,   161,   164,   655,   653,   660,   658,   162,   162,   664,
-     163,   162,   109,   665,    77,   670,   461,   672,   463,    13,
-     162,   126,   677,   163,   162,   162,   162,   370,   162,   862,
-     805,    75,   167,   162,   479,   480,   481,   692,   162,   382,
-     485,   486,   487,    44,    45,    46,    47,    48,    49,   162,
-      51,    77,   704,   723,    26,   161,    13,   167,   167,   714,
-     893,   506,   162,   508,    77,   161,    13,   512,   513,   163,
-     163,   904,   163,   127,   723,    13,    75,   164,    13,   164,
-     104,   161,    26,   528,    72,   109,   429,   111,   112,   113,
-     114,   115,   116,   117,   163,   162,   164,   731,    77,   751,
-      13,    77,    13,   737,   738,   163,    95,   552,   763,   164,
-      95,   163,   165,   154,   769,   163,   147,    13,   461,    75,
-     463,    13,    14,    15,    16,    17,    18,    19,    20,    21,
-      22,    23,    24,   163,    75,    77,   479,   480,   793,   584,
-     161,   165,   797,   798,    26,   800,   780,   802,   163,    75,
-      75,     8,   807,    14,    15,   600,   162,   606,   606,   342,
-     815,    53,    54,   506,    25,   508,   611,   585,   506,   512,
-     513,   533,   660,   825,   738,   633,   828,   104,   788,   527,
-     347,   836,   109,    81,   111,   112,   113,   114,   115,   116,
-     117,   846,   628,   836,   683,   641,   848,   600,   853,   599,
-     852,   512,   202,    95,   856,   773,   651,   859,   215,   861,
-      -1,   863,   513,   868,    -1,   660,   871,    -1,    -1,   664,
-      -1,    -1,    -1,    -1,   858,   670,    -1,   672,    -1,    -1,
-      -1,   883,    -1,    -1,    -1,    -1,   891,    -1,   165,    -1,
-      -1,   584,   897,    -1,    -1,    -1,    -1,   899,    -1,    -1,
-      -1,    -1,    -1,    -1,   906,    -1,    -1,    -1,     4,     5,
-      -1,     7,     8,     9,    10,    11,    12,    13,    -1,   714,
-      16,    17,    18,    19,    20,    21,    22,    23,    24,    -1,
-      26,    -1,    -1,    -1,    -1,    -1,    -1,    -1,    -1,    44,
-      45,    37,    -1,    -1,    -1,   156,    -1,    -1,    44,    45,
-      -1,    -1,    -1,    49,    -1,    51,    -1,    -1,   651,    -1,
-      65,    -1,    -1,    -1,    -1,    -1,    -1,   660,    73,    74,
-      75,    -1,    -1,    -1,   769,    -1,    -1,    -1,    83,    -1,
-      -1,    -1,    -1,    -1,    80,    81,    -1,    -1,    -1,    -1,
-      -1,   202,    -1,    -1,    -1,    -1,    -1,    -1,   793,   210,
-     211,   212,   797,   214,    -1,    -1,   111,   802,    38,    39,
-      40,    41,    42,    43,    44,    45,    46,    47,    48,    49,
-     815,    51,    -1,    -1,   129,   130,   131,   132,   133,   134,
-      -1,    -1,    -1,   129,    -1,    -1,    -1,    -1,    -1,   144,
-      -1,    -1,    -1,    -1,    -1,   150,   151,   152,   153,    -1,
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-      -1,    50,    -1,    52,    53,    54,    55,    56,    57,    -1,
-      -1,    60,    61,    62,    63,    64,    65,    66,    67,    68,
-      -1,    -1,    -1,    -1,    73,    74,    75,    76,    77,    -1,
-      -1,    -1,    -1,    -1,    83,    84,    -1,    -1,    -1,    -1,
-      -1,    -1,    -1,    -1,    -1,    -1,    -1,    -1,    -1,    -1,
-      -1,    -1,    -1,    -1,   103,    -1,    -1,    -1,    -1,    -1,
-      -1,    -1,   111,    -1,    -1,    -1,    -1,    -1,    -1,    -1,
-     119,   120,    -1,    -1,    -1,    -1,    -1,    -1,    -1,   128,
-     129,   130,   131,   132,   133,   134,    -1,     3,     4,     5,
-       6,     7,    -1,    -1,    -1,   144,    12,    -1,    -1,    -1,
-      -1,   150,   151,   152,   153,    -1,    -1,    -1,   157,   158,
-      -1,    -1,   161,    -1,    -1,    -1,    32,   166,    -1,    -1,
-      -1,    -1,    -1,    -1,    -1,    -1,    -1,    -1,    44,    45,
-      -1,    -1,    -1,    -1,    50,    -1,    52,    53,    54,    55,
-      56,    57,    -1,    -1,    60,    61,    62,    63,    64,    65,
-      66,    67,    68,    -1,    -1,    -1,    -1,    73,    74,    75,
-      76,    77,    -1,    -1,    -1,    -1,    -1,    83,    84,    -1,
-      -1,    -1,    -1,    -1,    -1,    -1,    -1,    -1,    -1,    -1,
-      -1,    -1,    -1,    -1,    -1,    -1,    -1,   103,    -1,    -1,
-      -1,    -1,    -1,    -1,    -1,   111,    -1,    -1,    -1,    -1,
-      -1,    -1,    -1,   119,   120,    -1,    -1,    -1,    -1,    -1,
-      -1,    -1,   128,   129,   130,   131,   132,   133,   134,    -1,
-       3,     4,     5,     6,     7,    -1,    -1,    -1,   144,    12,
-      -1,    -1,    -1,    -1,   150,   151,   152,   153,    -1,    -1,
-      -1,   157,   158,    -1,    -1,   161,    -1,    -1,    -1,    32,
-     166,    -1,    -1,    -1,    -1,    -1,    -1,    -1,    -1,    -1,
-      -1,    44,    45,    -1,    -1,    -1,    -1,    50,    -1,    52,
-      53,    54,    55,    56,    57,    -1,    -1,    60,    61,    62,
-      63,    64,    65,    66,    67,    68,    -1,    -1,    -1,    -1,
-      73,    74,    75,    76,    77,    -1,    -1,    -1,    -1,    -1,
-      83,    84,    -1,    -1,    -1,    -1,    -1,    -1,    -1,    -1,
-      -1,    -1,    -1,    -1,    -1,    -1,    -1,    -1,    -1,    -1,
-     103,    -1,    -1,    -1,    -1,    -1,    -1,    -1,   111,    -1,
-      -1,    -1,    -1,    -1,    -1,    -1,   119,   120,    -1,    -1,
-      -1,    -1,    -1,    -1,    -1,   128,   129,   130,   131,   132,
-     133,   134,    -1,     3,     4,     5,     6,     7,    -1,    -1,
-      -1,   144,    12,    -1,    -1,    -1,    -1,   150,   151,   152,
-     153,    -1,    -1,    -1,   157,   158,    -1,    -1,   161,    -1,
-      -1,    -1,    32,   166,    -1,    -1,    -1,    -1,    -1,    -1,
-      -1,    -1,    -1,    -1,    44,    45,    -1,    -1,    -1,    -1,
-      50,    -1,    52,    53,    54,    55,    56,    57,    -1,    -1,
-      60,    61,    62,    63,    64,    65,    66,    67,    68,    -1,
-      -1,    -1,    -1,    73,    74,    75,    76,    77,    -1,    -1,
-      -1,    -1,    -1,    83,    84,    -1,    -1,    -1,    -1,    -1,
-      -1,    -1,    -1,    -1,    -1,    -1,    -1,    -1,    -1,    -1,
-      -1,    -1,    -1,   103,    -1,    -1,    -1,    -1,    -1,    -1,
-      -1,   111,    -1,    -1,    -1,    -1,    -1,    -1,    -1,   119,
-     120,    -1,    -1,    -1,    -1,    -1,    -1,    -1,   128,   129,
-     130,   131,   132,   133,   134,    -1,     3,     4,     5,     6,
-       7,    -1,    -1,    -1,   144,    12,    -1,    -1,    -1,    -1,
-     150,   151,   152,   153,    -1,    -1,    -1,   157,   158,    -1,
-      -1,   161,    -1,    -1,    -1,    32,   166,    -1,    -1,    -1,
-      -1,    -1,    -1,    -1,    -1,    -1,    -1,    44,    45,    -1,
-      -1,    -1,    -1,    50,    -1,    52,    53,    54,    55,    56,
-      57,    -1,    -1,    60,    61,    62,    63,    64,    65,    66,
-      67,    68,    -1,    -1,    -1,    -1,    73,    74,    75,    76,
-      77,    -1,    -1,    -1,    -1,    -1,    83,    84,    -1,    -1,
-      -1,    -1,    -1,    -1,    -1,    -1,    -1,    -1,    -1,    -1,
-      -1,    -1,    -1,    -1,    -1,    -1,   103,    -1,    -1,    -1,
-      -1,    -1,    -1,    -1,   111,    -1,    -1,    -1,    -1,    -1,
-      -1,    -1,   119,   120,    -1,    -1,    -1,    -1,    -1,    -1,
-      -1,   128,   129,   130,   131,   132,   133,   134,    -1,     3,
-       4,     5,     6,     7,    -1,    -1,    -1,   144,    12,    -1,
-      -1,    -1,    -1,   150,   151,   152,   153,    -1,    -1,    -1,
-     157,   158,    -1,    -1,   161,    -1,    -1,    -1,    -1,   166,
-      -1,    -1,    -1,    -1,    -1,    -1,    -1,    -1,    -1,    -1,
-      44,    45,    -1,    -1,    -1,    -1,    50,    -1,    52,    53,
-      54,    55,    56,    57,    -1,    -1,    60,    61,    62,    63,
-      64,    65,    66,    67,    68,    -1,    -1,    -1,    -1,    73,
-      74,    75,    76,    77,    -1,    -1,    -1,    -1,    -1,    83,
-      84,    -1,    -1,    -1,    -1,    -1,    -1,    -1,    -1,    -1,
-      -1,    -1,    -1,    -1,    -1,    -1,    -1,    -1,    -1,   103,
-      -1,    -1,    -1,    -1,    -1,    -1,    -1,   111,    -1,    -1,
-      -1,    -1,    -1,    -1,    -1,   119,   120,    -1,    -1,    -1,
-      -1,    -1,    -1,    -1,   128,   129,   130,   131,   132,   133,
-     134,    -1,     3,     4,     5,     6,     7,    -1,    -1,    -1,
-     144,    12,    -1,    -1,    -1,    -1,   150,   151,   152,   153,
-      -1,    -1,    -1,   157,   158,    -1,    -1,   161,    -1,    -1,
-      -1,    -1,   166,    -1,    -1,    -1,    -1,    -1,    -1,    -1,
-      -1,    -1,    -1,    44,    45,    -1,    -1,    -1,    -1,    50,
-      -1,    52,    53,    54,    55,    56,    57,    -1,    -1,    60,
-      61,    62,    63,    64,    65,    66,    67,    68,    -1,    -1,
-      -1,    -1,    73,    74,    75,    76,    77,    -1,    -1,    -1,
-      -1,    -1,    83,    84,    -1,    -1,    -1,    -1,    -1,    -1,
-      -1,    -1,    -1,    -1,    -1,    -1,    -1,    -1,    -1,    -1,
-      -1,    -1,   103,    -1,    -1,    -1,    -1,    -1,    -1,    -1,
-     111,    -1,    -1,    -1,    -1,    -1,    -1,    -1,   119,   120,
-      -1,    -1,    -1,    -1,    -1,    -1,    -1,   128,   129,   130,
-     131,   132,   133,   134,    -1,    -1,    -1,    -1,    -1,    -1,
-      -1,    -1,    -1,   144,    -1,    -1,    -1,    -1,    -1,   150,
-     151,   152,   153,     9,    10,    11,   157,   158,    -1,    -1,
-     161,    -1,    -1,    -1,    -1,   166,    -1,    -1,    -1,    25,
-      -1,    27,    28,    29,    30,    31,    32,    33,    34,    35,
-      36,    37,    38,    39,    40,    41,    42,    43,    44,    45,
-      46,    47,    48,    49,    -1,    51,     9,    10,    11,    -1,
-      -1,    -1,    -1,    -1,    -1,    -1,    -1,    -1,    -1,    -1,
-      -1,    -1,    25,    -1,    27,    28,    29,    30,    31,    32,
-      33,    34,    35,    36,    37,    38,    39,    40,    41,    42,
-      43,    44,    45,    46,    47,    48,    49,    -1,    51,     9,
-      10,    11,    -1,    -1,    -1,    -1,    -1,    -1,    -1,    -1,
-      -1,    -1,    -1,    -1,    -1,    25,    -1,    27,    28,    29,
-      30,    31,    32,    33,    34,    35,    36,    37,    38,    39,
-      40,    41,    42,    43,    44,    45,    46,    47,    48,    49,
-      -1,    51,    -1,    -1,    -1,    -1,    -1,    -1,    -1,    -1,
-      -1,    -1,     9,    10,    11,    -1,    -1,    -1,    -1,    -1,
-      -1,    -1,    -1,    -1,    -1,    -1,    -1,    -1,    25,   165,
-      27,    28,    29,    30,    31,    32,    33,    34,    35,    36,
-      37,    38,    39,    40,    41,    42,    43,    44,    45,    46,
-      47,    48,    49,    -1,    51,    -1,    -1,     9,    10,    11,
-      -1,    -1,    -1,    -1,    -1,    -1,    -1,    -1,    -1,    -1,
-      -1,    -1,   165,    25,    26,    27,    28,    29,    30,    31,
-      32,    33,    34,    35,    36,    37,    38,    39,    40,    41,
-      42,    43,    44,    45,    46,    47,    48,    49,    -1,    51,
-       9,    10,    11,    -1,    -1,    -1,    -1,    -1,    -1,    -1,
-      -1,    -1,    -1,    -1,    -1,   165,    25,    -1,    27,    28,
-      29,    30,    31,    32,    33,    34,    35,    36,    37,    38,
-      39,    40,    41,    42,    43,    44,    45,    46,    47,    48,
-      49,    -1,    51,    -1,    -1,    -1,    -1,    -1,    -1,    -1,
-      -1,     9,    10,    11,    -1,    -1,    -1,    -1,    -1,    -1,
-      -1,    -1,    -1,    -1,    -1,    -1,    -1,    25,   165,    27,
-      28,    29,    30,    31,    32,    33,    34,    35,    36,    37,
-      38,    39,    40,    41,    42,    43,    44,    45,    46,    47,
-      48,    49,    -1,    51,     9,    10,    11,    -1,    -1,    -1,
-      -1,    -1,    -1,    -1,    -1,    -1,    -1,    -1,    -1,    -1,
-      25,   163,    27,    28,    29,    30,    31,    32,    33,    34,
-      35,    36,    37,    38,    39,    40,    41,    42,    43,    44,
-      45,    46,    47,    48,    49,    -1,    51,     9,    10,    11,
-      -1,    -1,    -1,    -1,    -1,    -1,    -1,    -1,    -1,    -1,
-      -1,    -1,    -1,    25,   163,    27,    28,    29,    30,    31,
-      32,    33,    34,    35,    36,    37,    38,    39,    40,    41,
-      42,    43,    44,    45,    46,    47,    48,    49,    -1,    51,
-      -1,    -1,    -1,    -1,    -1,    -1,    -1,    -1,     9,    10,
-      11,    -1,    -1,    -1,    -1,    -1,    -1,    -1,    -1,    -1,
-      -1,    -1,    -1,    -1,    25,   163,    27,    28,    29,    30,
-      31,    32,    33,    34,    35,    36,    37,    38,    39,    40,
-      41,    42,    43,    44,    45,    46,    47,    48,    49,    -1,
-      51,     9,    10,    11,    -1,    -1,    -1,    -1,    -1,    -1,
-      -1,    -1,    -1,    -1,    -1,    -1,    -1,    25,   163,    27,
-      28,    29,    30,    31,    32,    33,    34,    35,    36,    37,
-      38,    39,    40,    41,    42,    43,    44,    45,    46,    47,
-      48,    49,    -1,    51,     9,    10,    11,    -1,    -1,    -1,
-      -1,    -1,    -1,    -1,    -1,    -1,    -1,    -1,    -1,    -1,
-      25,   163,    27,    28,    29,    30,    31,    32,    33,    34,
-      35,    36,    37,    38,    39,    40,    41,    42,    43,    44,
-      45,    46,    47,    48,    49,    -1,    51,    -1,    -1,    -1,
-      -1,    -1,    -1,    -1,     9,    10,    11,    -1,    -1,    -1,
-      -1,    -1,    -1,    -1,    -1,    -1,    -1,    -1,    -1,    -1,
-      25,   162,    27,    28,    29,    30,    31,    32,    33,    34,
-      35,    36,    37,    38,    39,    40,    41,    42,    43,    44,
-      45,    46,    47,    48,    49,    -1,    51,     9,    10,    11,
-      -1,    -1,    -1,    -1,    -1,    -1,    -1,    -1,    -1,    -1,
-      -1,    -1,    -1,    25,   162,    27,    28,    29,    30,    31,
-      32,    33,    34,    35,    36,    37,    38,    39,    40,    41,
-      42,    43,    44,    45,    46,    47,    48,    49,    -1,    51,
-       9,    10,    11,    -1,    -1,    -1,    -1,    -1,    -1,    -1,
-      -1,    -1,    -1,    -1,    -1,    -1,    25,   162,    27,    28,
-      29,    30,    31,    32,    33,    34,    35,    36,    37,    38,
-      39,    40,    41,    42,    43,    44,    45,    46,    47,    48,
-      49,    -1,    51,    -1,    -1,    -1,    -1,    -1,    -1,    -1,
-       9,    10,    11,    -1,    -1,    -1,    -1,    -1,    -1,    -1,
-      -1,    -1,    -1,    -1,    -1,    -1,    25,   162,    27,    28,
-      29,    30,    31,    32,    33,    34,    35,    36,    37,    38,
-      39,    40,    41,    42,    43,    44,    45,    46,    47,    48,
-      49,    -1,    51,     9,    10,    11,    -1,    -1,    -1,    -1,
-      -1,    -1,    -1,    -1,    -1,    -1,    -1,    -1,    -1,    25,
-     162,    27,    28,    29,    30,    31,    32,    33,    34,    35,
-      36,    37,    38,    39,    40,    41,    42,    43,    44,    45,
-      46,    47,    48,    49,    -1,    51,     9,    10,    11,    -1,
-      -1,    -1,    -1,    -1,    -1,    -1,    -1,    -1,    -1,    -1,
-      -1,    -1,    25,   162,    27,    28,    29,    30,    31,    32,
-      33,    34,    35,    36,    37,    38,    39,    40,    41,    42,
-      43,    44,    45,    46,    47,    48,    49,    -1,    51,    -1,
-      -1,    -1,    -1,    -1,    -1,    -1,     9,    10,    11,    -1,
-      -1,    -1,    -1,    -1,    -1,    -1,    -1,    -1,    -1,    -1,
-      -1,    -1,    25,   162,    27,    28,    29,    30,    31,    32,
-      33,    34,    35,    36,    37,    38,    39,    40,    41,    42,
-      43,    44,    45,    46,    47,    48,    49,    -1,    51,     9,
-      10,    11,    -1,    -1,    -1,    -1,    -1,    -1,    -1,    -1,
-      -1,    -1,    -1,    -1,    -1,    25,   162,    27,    28,    29,
-      30,    31,    32,    33,    34,    35,    36,    37,    38,    39,
-      40,    41,    42,    43,    44,    45,    46,    47,    48,    49,
-      -1,    51,    -1,    -1,    -1,    -1,    -1,    -1,    -1,    -1,
-      -1,    -1,    -1,    -1,    -1,    -1,    -1,    -1,    -1,   162,
-       9,    10,    11,    -1,    -1,    -1,    -1,    -1,    -1,    -1,
-      -1,    -1,    -1,    -1,   127,    -1,    25,    -1,    27,    28,
-      29,    30,    31,    32,    33,    34,    35,    36,    37,    38,
-      39,    40,    41,    42,    43,    44,    45,    46,    47,    48,
-      49,    -1,    51,     9,    10,    11,    -1,    -1,    -1,    -1,
-      -1,    -1,    -1,    -1,    -1,    -1,    -1,   127,    -1,    25,
-      26,    27,    28,    29,    30,    31,    32,    33,    34,    35,
-      36,    37,    38,    39,    40,    41,    42,    43,    44,    45,
-      46,    47,    48,    49,    -1,    51,    -1,    -1,    -1,    -1,
-      -1,    -1,    -1,    -1,    -1,    -1,    -1,    -1,    -1,    -1,
-      -1,     9,    10,    11,    -1,    -1,    -1,    -1,    -1,    -1,
-      -1,    -1,    -1,    -1,    -1,    -1,    -1,    25,   127,    27,
-      28,    29,    30,    31,    32,    33,    34,    35,    36,    37,
-      38,    39,    40,    41,    42,    43,    44,    45,    46,    47,
-      48,    49,    -1,    51,    10,    11,    -1,    -1,    -1,    -1,
-      -1,    -1,    -1,    -1,    -1,    -1,    -1,    -1,    -1,    25,
-      -1,    27,    28,    29,    30,    31,    32,    33,    34,    35,
-      36,    37,    38,    39,    40,    41,    42,    43,    44,    45,
-      46,    47,    48,    49,    11,    51,    -1,    -1,    -1,    -1,
-      -1,    -1,    -1,    -1,    -1,    -1,    -1,    -1,    25,    -1,
-      27,    28,    29,    30,    31,    32,    33,    34,    35,    36,
-      37,    38,    39,    40,    41,    42,    43,    44,    45,    46,
-      47,    48,    49,    25,    51,    27,    28,    29,    30,    31,
-      32,    33,    34,    35,    36,    37,    38,    39,    40,    41,
-      42,    43,    44,    45,    46,    47,    48,    49,    -1,    51,
-      27,    28,    29,    30,    31,    32,    33,    34,    35,    36,
-      37,    38,    39,    40,    41,    42,    43,    44,    45,    46,
-      47,    48,    49,    -1,    51,    29,    30,    31,    32,    33,
-      34,    35,    36,    37,    38,    39,    40,    41,    42,    43,
-      44,    45,    46,    47,    48,    49,    -1,    51,    30,    31,
-      32,    33,    34,    35,    36,    37,    38,    39,    40,    41,
-      42,    43,    44,    45,    46,    47,    48,    49,    -1,    51,
-      31,    32,    33,    34,    35,    36,    37,    38,    39,    40,
-      41,    42,    43,    44,    45,    46,    47,    48,    49,    -1,
-      51
-};
-
-  /* YYSTOS[STATE-NUM] -- The (internal number of the) accessing
-     symbol of state STATE-NUM.  */
-static const yytype_uint16 yystos[] =
-{
-       0,   169,   170,     0,     3,     4,     5,     6,     7,    12,
-      44,    45,    50,    52,    53,    54,    55,    56,    57,    60,
-      61,    62,    63,    64,    65,    66,    67,    68,    69,    73,
-      74,    75,    76,    77,    79,    83,    84,    85,    86,    87,
-      89,    91,    93,    96,   100,   101,   102,   103,   104,   105,
-     106,   108,   109,   110,   111,   112,   113,   118,   119,   120,
-     121,   122,   123,   128,   129,   130,   131,   132,   133,   134,
-     137,   138,   140,   144,   150,   151,   152,   153,   156,   157,
-     158,   161,   163,   164,   166,   171,   172,   175,   178,   179,
-     186,   187,   189,   190,   191,   193,   248,   249,   250,   253,
-     254,   262,   265,   269,   270,   272,   273,   279,   280,   281,
-     282,   283,   284,   285,   286,   291,   296,   298,   299,   300,
-     301,   302,    75,   111,   150,   158,   250,   269,   269,   161,
-     269,   269,   269,   269,   269,   269,   269,    75,   111,   150,
-     153,   161,   171,   254,   272,   273,   281,   272,   269,   269,
-     269,   269,   269,   269,   269,   269,    32,   269,   294,   295,
-     150,   153,   171,   254,   256,   257,   281,   284,   285,   291,
-     269,   161,   260,   161,    26,    65,    65,   245,   269,   178,
-     161,   161,   161,   161,   161,   163,   269,   163,   269,    75,
-      75,   163,   248,   269,   273,   164,   269,   153,   171,   173,
-     174,    77,   166,   220,   221,    77,   222,   250,   122,   122,
-     161,   161,   161,   161,   161,   161,   153,   164,   171,   171,
-     248,   269,   273,   249,   269,   301,   176,   164,   153,   161,
-       8,   163,    75,    75,   163,    32,   188,    65,   147,     9,
-      10,    11,    25,    27,    28,    29,    30,    31,    32,    33,
-      34,    35,    36,    37,    38,    39,    40,    41,    42,    43,
-      44,    45,    46,    47,    48,    49,    51,   163,    53,    54,
-      13,    14,    15,    16,    17,    18,    19,    20,    21,    22,
-      23,    24,   161,   147,    65,   126,    65,   164,   166,   285,
-      65,    65,    65,   188,   269,   153,   171,   301,   147,   147,
-     271,   273,   127,   167,     8,   267,   153,   171,   147,   161,
-     261,   147,   126,   285,   162,   269,   269,   269,   287,   287,
-       8,   163,    87,   269,   246,   247,   269,   248,   273,    75,
-     202,   269,   163,   163,   163,    13,   163,   163,   176,   163,
-     171,    95,     8,   163,   164,   270,   273,     8,   163,    13,
-       8,   163,   188,   184,   185,   273,   273,   297,   273,   162,
-     128,   273,   292,   293,   294,   171,   170,   163,   164,   161,
-     127,   162,   162,   162,   121,   165,   177,   178,   186,   187,
-     269,    75,    32,   160,   217,   218,   219,   269,    75,   124,
-     192,   124,   194,    75,   161,   287,    75,   279,   285,   291,
-     269,   269,   269,    26,   269,   269,   269,   269,   269,   269,
-     269,   269,   269,   269,   269,   269,   269,   269,   269,   269,
-     269,   269,   269,   269,   269,   269,   269,   269,   256,    32,
-     269,   269,   269,   269,   269,   269,   269,   269,   269,   269,
-     269,   269,   217,    75,   279,   287,    75,   164,   279,   288,
-     289,   290,   287,   269,   287,   287,   287,   162,   171,    75,
-      75,    32,   269,    32,   269,   171,   279,   217,   279,   288,
-     162,   162,   167,   167,   269,   161,   162,   163,     8,    95,
-      95,    13,     8,   162,   162,    44,    45,    65,    83,   129,
-     150,   153,   171,   254,   262,   263,   264,   165,    95,    75,
-     174,   269,   221,   263,    77,   161,     8,   162,     8,   162,
-     162,   163,   161,     8,   162,   162,   161,   165,   170,   217,
-     248,   273,   161,   165,   271,   269,   162,     8,    13,   150,
-     153,   171,   255,   125,   195,   196,   255,   164,   161,   129,
-     155,   211,   212,   214,   215,   255,   167,   161,   161,   285,
-     269,    26,    66,   273,   162,   161,   161,   167,   269,   161,
-     276,   277,   278,    65,   164,   167,   165,   167,   167,   167,
-     271,   271,   127,   162,   258,    26,   178,   269,    26,   178,
-     206,   246,   269,   273,    32,   198,   273,   263,    75,    26,
-     178,   201,    26,   164,   203,   263,   263,   263,   266,   268,
-     161,   153,   171,   147,   107,   159,   180,   181,   183,    75,
-     165,    13,   211,   185,   163,   273,   292,   293,    13,   217,
-     165,   162,   162,   219,   263,   153,   171,   196,   164,     8,
-     223,   211,   162,     8,    32,    77,   160,   213,   217,   217,
-     269,   256,   217,   217,   165,   217,    65,    65,   274,   287,
-     269,    32,   269,   126,   259,   176,   207,   162,   176,   163,
-     127,   197,   273,   197,    13,   176,   163,   204,   163,   204,
-     127,   167,     8,   267,   266,   171,    75,   161,   164,   181,
-     182,   183,   263,   162,   162,   269,   162,   163,   171,   223,
-     255,   104,   109,   111,   112,   113,   114,   115,   116,   117,
-     165,   224,   226,   239,   240,   241,   242,   244,   162,   109,
-     251,   214,   213,    77,    13,   162,   162,   261,   162,   162,
-     162,   287,   287,   126,   275,   167,   165,   271,   288,   208,
-      70,    71,   209,   163,    88,   246,   198,   162,   162,   263,
-      94,   204,    97,    98,    99,   204,   165,   263,   263,   162,
-     255,   176,   251,   165,    75,   227,   255,    77,   243,   250,
-     242,     8,   163,    26,   216,   161,   216,    32,   213,    13,
-     263,   167,   167,   288,    70,    71,   210,   161,   178,   163,
-     162,    26,   178,   200,   200,   163,    97,   163,   269,    26,
-     163,   205,   165,   127,    77,   165,   216,    13,     8,   163,
-     164,   228,    13,     8,   163,   225,    75,    25,   215,   164,
-      32,    77,   252,   164,   213,    13,   263,   278,   161,    26,
-      72,   269,    26,   178,   199,   176,   163,   205,   176,   263,
-     162,   164,   263,   255,    75,   229,   230,   231,   232,   234,
-     235,   236,   255,   263,    77,   188,    13,   215,   176,    77,
-       8,   162,   176,    13,   263,   269,   176,   163,   162,   176,
-      92,   176,   164,   176,   165,   231,   163,    95,   154,   163,
-     147,    13,    75,   263,   165,    32,    77,   165,   263,   162,
-     178,    90,   163,   176,   165,   237,   242,   233,   255,    75,
-     263,   161,    77,    26,   163,   165,    75,     8,   211,   176,
-     255,   162,   216,   163,   164,   238,   176,   165
-};
-
-  /* YYR1[YYN] -- Symbol number of symbol that rule YYN derives.  */
-static const yytype_uint16 yyr1[] =
-{
-       0,   168,   169,   170,   170,   171,   171,   172,   172,   172,
-     172,   172,   172,   172,   172,   172,   173,   173,   174,   174,
-     174,   174,   175,   175,   176,   176,   177,   177,   177,   177,
-     178,   178,   178,   178,   178,   179,   179,   179,   179,   179,
-     179,   179,   179,   179,   179,   179,   179,   179,   179,   179,
-     179,   179,   179,   179,   179,   179,   179,   179,   179,   179,
-     179,   179,   179,   179,   180,   180,   181,   182,   182,   183,
-     184,   184,   185,   186,   187,   188,   188,   189,   190,   190,
-     191,   191,   191,   191,   192,   192,   193,   194,   194,   195,
-     195,   196,   196,   197,   197,   198,   198,   199,   199,   200,
-     200,   201,   201,   202,   202,   203,   203,   203,   203,   204,
-     204,   204,   205,   205,   206,   206,   207,   207,   208,   208,
-     209,   209,   210,   210,   211,   211,   212,   212,   212,   212,
-     212,   212,   212,   212,   213,   213,   214,   214,   215,   215,
-     215,   216,   216,   216,   217,   217,   218,   218,   219,   219,
-     219,   220,   220,   221,   221,   221,   222,   222,   222,   222,
-     223,   223,   224,   224,   224,   225,   224,   226,   227,   227,
-     228,   228,   229,   229,   230,   230,   231,   231,   232,   233,
-     233,   234,   234,   235,   236,   236,   237,   237,   238,   238,
-     239,   239,   240,   240,   241,   241,   242,   242,   242,   242,
-     242,   242,   243,   243,   243,   243,   244,   244,   245,   245,
-     246,   246,   247,   247,   248,   248,   248,   248,   248,   248,
-     248,   248,   248,   248,   248,   248,   248,   248,   248,   248,
-     248,   248,   248,   248,   248,   248,   248,   248,   248,   248,
-     248,   248,   248,   248,   248,   248,   248,   248,   248,   248,
-     248,   248,   248,   248,   248,   248,   248,   248,   248,   248,
-     248,   248,   248,   248,   248,   248,   248,   248,   248,   248,
-     248,   248,   248,   248,   248,   248,   248,   248,   248,   248,
-     248,   248,   248,   248,   248,   248,   248,   249,   249,   249,
-     249,   250,   251,   251,   252,   252,   252,   252,   253,   253,
-     253,   253,   253,   253,   253,   253,   254,   254,   254,   254,
-     255,   255,   255,   256,   256,   257,   257,   258,   258,   259,
-     260,   260,   260,   261,   261,   262,   262,   262,   262,   262,
-     262,   262,   262,   262,   262,   262,   262,   263,   263,   263,
-     263,   263,   263,   263,   263,   263,   264,   265,   265,   265,
-     265,   265,   265,   266,   266,   267,   267,   268,   268,   268,
-     268,   269,   269,   270,   271,   272,   273,   273,   274,   274,
-     275,   276,   276,   277,   278,   278,   278,   279,   279,   280,
-     280,   281,   282,   282,   283,   283,   283,   284,   284,   284,
-     284,   285,   285,   285,   286,   286,   287,   287,   288,   288,
-     289,   289,   289,   290,   290,   291,   291,   292,   292,   293,
-     293,   293,   294,   294,   295,   295,   295,   295,   295,   295,
-     295,   295,   296,   296,   296,   296,   296,   296,   296,   297,
-     297,   298,   298,   299,   299,   299,   299,   299,   300,   300,
-     301,   302,   302
-};
-
-  /* YYR2[YYN] -- Number of symbols on the right hand side of rule YYN.  */
-static const yytype_uint8 yyr2[] =
-{
-       0,     2,     1,     2,     0,     1,     3,     1,     1,     1,
-       4,     3,     5,     4,     3,     2,     3,     1,     1,     3,
-       2,     4,     5,     4,     2,     0,     1,     1,     1,     4,
-       1,     2,     1,     1,     1,     3,     7,    10,     5,     7,
-       9,     5,     2,     3,     2,     3,     2,     3,     3,     3,
-       3,     3,     1,     2,     2,     5,     8,     8,     5,     1,
-       6,     5,     3,     3,     2,     1,     8,     0,     1,     4,
-       1,     3,     1,     1,     1,     0,     1,    10,     7,     6,
-       1,     2,     2,     1,     0,     2,     1,     0,     2,     0,
-       2,     1,     3,     0,     2,     1,     2,     1,     4,     1,
-       4,     1,     4,     3,     5,     3,     4,     4,     5,     0,
-       5,     4,     1,     1,     1,     4,     0,     6,     0,     7,
-       0,     2,     0,     3,     1,     0,     2,     3,     5,     4,
-       4,     5,     7,     6,     2,     1,     0,     1,     1,     1,
-       1,     0,     3,     2,     1,     0,     1,     3,     1,     2,
-       2,     3,     1,     1,     2,     4,     3,     5,     1,     3,
-       2,     0,     3,     2,     1,     0,    10,     3,     1,     3,
-       1,     3,     0,     1,     1,     2,     2,     2,     3,     1,
-       3,     1,     1,     3,     4,     3,     0,     1,     1,     3,
-       1,     1,     0,     1,     1,     2,     1,     1,     1,     1,
-       1,     1,     3,     5,     1,     3,     5,     4,     3,     1,
-       0,     1,     3,     1,     6,     3,     4,     6,     2,     3,
-       3,     3,     3,     3,     3,     3,     3,     3,     3,     3,
-       2,     2,     2,     2,     3,     3,     3,     3,     3,     3,
-       3,     3,     3,     3,     3,     3,     3,     3,     3,     3,
-       2,     2,     2,     2,     3,     3,     3,     3,     3,     3,
-       3,     3,     3,     3,     1,     1,     5,     4,     3,     1,
-       2,     2,     2,     2,     2,     2,     2,     2,     2,     1,
-       1,     1,     1,     2,     1,    10,    11,     2,     2,     4,
-       4,     1,     0,     4,     3,     4,     1,     2,     4,     6,
-       5,     6,     6,     6,     6,     4,     1,     1,     3,     2,
-       1,     3,     2,     1,     1,     4,     1,     2,     0,     2,
-       0,     2,     3,     0,     3,     1,     1,     1,     1,     1,
-       1,     1,     1,     1,     1,     1,     1,     1,     1,     3,
-       2,     2,     2,     4,     3,     1,     3,     1,     1,     1,
-       3,     2,     1,     0,     2,     0,     1,     5,     3,     3,
-       1,     1,     1,     1,     1,     1,     5,     1,     2,     0,
-       3,     4,     4,     3,     1,     1,     0,     1,     2,     3,
-       3,     1,     4,     4,     1,     1,     1,     1,     3,     2,
-       1,     4,     4,     1,     1,     4,     0,     1,     1,     1,
-       4,     4,     1,     1,     3,     1,     2,     3,     1,     1,
-       4,     0,     0,     2,     5,     3,     3,     1,     6,     4,
-       4,     2,     4,     4,     2,     2,     4,     2,     2,     1,
-       3,     3,     3,     4,     4,     4,     4,     4,     4,     3,
-       3,     3,     3
-};
-
-
-#define yyerrok         (yyerrstatus = 0)
-#define yyclearin       (yychar = YYEMPTY)
-#define YYEMPTY         (-2)
-#define YYEOF           0
-
-#define YYACCEPT        goto yyacceptlab
-#define YYABORT         goto yyabortlab
-#define YYERROR         goto yyerrorlab
-
-
-#define YYRECOVERING()  (!!yyerrstatus)
-
-#define YYBACKUP(Token, Value)                                  \
-do                                                              \
-  if (yychar == YYEMPTY)                                        \
-    {                                                           \
-      yychar = (Token);                                         \
-      yylval = (Value);                                         \
-      YYPOPSTACK (yylen);                                       \
-      yystate = *yyssp;                                         \
-      goto yybackup;                                            \
-    }                                                           \
-  else                                                          \
-    {                                                           \
-      yyerror (yyscanner, root, YY_("syntax error: cannot back up")); \
-      YYERROR;                                                  \
-    }                                                           \
-while (0)
-
-/* Error token number */
-#define YYTERROR        1
-#define YYERRCODE       256
-
-
-
-/* Enable debugging if requested.  */
-#if YYDEBUG
-
-# ifndef YYFPRINTF
-#  include <stdio.h> /* INFRINGES ON USER NAME SPACE */
-#  define YYFPRINTF fprintf
-# endif
-
-# define YYDPRINTF(Args)                        \
-do {                                            \
-  if (yydebug)                                  \
-    YYFPRINTF Args;                             \
-} while (0)
-
-/* This macro is provided for backward compatibility. */
-#ifndef YY_LOCATION_PRINT
-# define YY_LOCATION_PRINT(File, Loc) ((void) 0)
-#endif
-
-
-# define YY_SYMBOL_PRINT(Title, Type, Value, Location)                    \
-do {                                                                      \
-  if (yydebug)                                                            \
-    {                                                                     \
-      YYFPRINTF (stderr, "%s ", Title);                                   \
-      yy_symbol_print (stderr,                                            \
-                  Type, Value, yyscanner, root); \
-      YYFPRINTF (stderr, "\n");                                           \
-    }                                                                     \
-} while (0)
-
-
-/*----------------------------------------.
-| Print this symbol's value on YYOUTPUT.  |
-`----------------------------------------*/
-
-static void
-yy_symbol_value_print (FILE *yyoutput, int yytype, YYSTYPE const * const yyvaluep, void* yyscanner, xhpast::Node** root)
-{
-  FILE *yyo = yyoutput;
-  YYUSE (yyo);
-  YYUSE (yyscanner);
-  YYUSE (root);
-  if (!yyvaluep)
-    return;
-# ifdef YYPRINT
-  if (yytype < YYNTOKENS)
-    YYPRINT (yyoutput, yytoknum[yytype], *yyvaluep);
-# endif
-  YYUSE (yytype);
-}
-
-
-/*--------------------------------.
-| Print this symbol on YYOUTPUT.  |
-`--------------------------------*/
-
-static void
-yy_symbol_print (FILE *yyoutput, int yytype, YYSTYPE const * const yyvaluep, void* yyscanner, xhpast::Node** root)
-{
-  YYFPRINTF (yyoutput, "%s %s (",
-             yytype < YYNTOKENS ? "token" : "nterm", yytname[yytype]);
-
-  yy_symbol_value_print (yyoutput, yytype, yyvaluep, yyscanner, root);
-  YYFPRINTF (yyoutput, ")");
-}
-
-/*------------------------------------------------------------------.
-| yy_stack_print -- Print the state stack from its BOTTOM up to its |
-| TOP (included).                                                   |
-`------------------------------------------------------------------*/
-
-static void
-yy_stack_print (yytype_int16 *yybottom, yytype_int16 *yytop)
-{
-  YYFPRINTF (stderr, "Stack now");
-  for (; yybottom <= yytop; yybottom++)
-    {
-      int yybot = *yybottom;
-      YYFPRINTF (stderr, " %d", yybot);
-    }
-  YYFPRINTF (stderr, "\n");
-}
-
-# define YY_STACK_PRINT(Bottom, Top)                            \
-do {                                                            \
-  if (yydebug)                                                  \
-    yy_stack_print ((Bottom), (Top));                           \
-} while (0)
-
-
-/*------------------------------------------------.
-| Report that the YYRULE is going to be reduced.  |
-`------------------------------------------------*/
-
-static void
-yy_reduce_print (yytype_int16 *yyssp, YYSTYPE *yyvsp, int yyrule, void* yyscanner, xhpast::Node** root)
-{
-  unsigned long int yylno = yyrline[yyrule];
-  int yynrhs = yyr2[yyrule];
-  int yyi;
-  YYFPRINTF (stderr, "Reducing stack by rule %d (line %lu):\n",
-             yyrule - 1, yylno);
-  /* The symbols being reduced.  */
-  for (yyi = 0; yyi < yynrhs; yyi++)
-    {
-      YYFPRINTF (stderr, "   $%d = ", yyi + 1);
-      yy_symbol_print (stderr,
-                       yystos[yyssp[yyi + 1 - yynrhs]],
-                       &(yyvsp[(yyi + 1) - (yynrhs)])
-                                              , yyscanner, root);
-      YYFPRINTF (stderr, "\n");
-    }
-}
-
-# define YY_REDUCE_PRINT(Rule)          \
-do {                                    \
-  if (yydebug)                          \
-    yy_reduce_print (yyssp, yyvsp, Rule, yyscanner, root); \
-} while (0)
-
-/* Nonzero means print parse trace.  It is left uninitialized so that
-   multiple parsers can coexist.  */
-int yydebug;
-#else /* !YYDEBUG */
-# define YYDPRINTF(Args)
-# define YY_SYMBOL_PRINT(Title, Type, Value, Location)
-# define YY_STACK_PRINT(Bottom, Top)
-# define YY_REDUCE_PRINT(Rule)
-#endif /* !YYDEBUG */
-
-
-/* YYINITDEPTH -- initial size of the parser's stacks.  */
-#ifndef YYINITDEPTH
-# define YYINITDEPTH 200
-#endif
-
-/* YYMAXDEPTH -- maximum size the stacks can grow to (effective only
-   if the built-in stack extension method is used).
-
-   Do not make this value too large; the results are undefined if
-   YYSTACK_ALLOC_MAXIMUM < YYSTACK_BYTES (YYMAXDEPTH)
-   evaluated with infinite-precision integer arithmetic.  */
-
-#ifndef YYMAXDEPTH
-# define YYMAXDEPTH 10000
-#endif
-
-
-#if YYERROR_VERBOSE
-
-# ifndef yystrlen
-#  if defined __GLIBC__ && defined _STRING_H
-#   define yystrlen strlen
-#  else
-/* Return the length of YYSTR.  */
-static YYSIZE_T
-yystrlen (const char *yystr)
-{
-  YYSIZE_T yylen;
-  for (yylen = 0; yystr[yylen]; yylen++)
-    continue;
-  return yylen;
-}
-#  endif
-# endif
-
-# ifndef yystpcpy
-#  if defined __GLIBC__ && defined _STRING_H && defined _GNU_SOURCE
-#   define yystpcpy stpcpy
-#  else
-/* Copy YYSRC to YYDEST, returning the address of the terminating '\0' in
-   YYDEST.  */
-static char *
-yystpcpy (char *yydest, const char *yysrc)
-{
-  char *yyd = yydest;
-  const char *yys = yysrc;
-
-  while ((*yyd++ = *yys++) != '\0')
-    continue;
-
-  return yyd - 1;
-}
-#  endif
-# endif
-
-# ifndef yytnamerr
-/* Copy to YYRES the contents of YYSTR after stripping away unnecessary
-   quotes and backslashes, so that it's suitable for yyerror.  The
-   heuristic is that double-quoting is unnecessary unless the string
-   contains an apostrophe, a comma, or backslash (other than
-   backslash-backslash).  YYSTR is taken from yytname.  If YYRES is
-   null, do not copy; instead, return the length of what the result
-   would have been.  */
-static YYSIZE_T
-yytnamerr (char *yyres, const char *yystr)
-{
-  if (*yystr == '"')
-    {
-      YYSIZE_T yyn = 0;
-      char const *yyp = yystr;
-
-      for (;;)
-        switch (*++yyp)
-          {
-          case '\'':
-          case ',':
-            goto do_not_strip_quotes;
-
-          case '\\':
-            if (*++yyp != '\\')
-              goto do_not_strip_quotes;
-            /* Fall through.  */
-          default:
-            if (yyres)
-              yyres[yyn] = *yyp;
-            yyn++;
-            break;
-
-          case '"':
-            if (yyres)
-              yyres[yyn] = '\0';
-            return yyn;
-          }
-    do_not_strip_quotes: ;
-    }
-
-  if (! yyres)
-    return yystrlen (yystr);
-
-  return yystpcpy (yyres, yystr) - yyres;
-}
-# endif
-
-/* Copy into *YYMSG, which is of size *YYMSG_ALLOC, an error message
-   about the unexpected token YYTOKEN for the state stack whose top is
-   YYSSP.
-
-   Return 0 if *YYMSG was successfully written.  Return 1 if *YYMSG is
-   not large enough to hold the message.  In that case, also set
-   *YYMSG_ALLOC to the required number of bytes.  Return 2 if the
-   required number of bytes is too large to store.  */
-static int
-yysyntax_error (YYSIZE_T *yymsg_alloc, char **yymsg,
-                yytype_int16 *yyssp, int yytoken)
-{
-  YYSIZE_T yysize0 = yytnamerr (YY_NULLPTR, yytname[yytoken]);
-  YYSIZE_T yysize = yysize0;
-  enum { YYERROR_VERBOSE_ARGS_MAXIMUM = 5 };
-  /* Internationalized format string. */
-  const char *yyformat = YY_NULLPTR;
-  /* Arguments of yyformat. */
-  char const *yyarg[YYERROR_VERBOSE_ARGS_MAXIMUM];
-  /* Number of reported tokens (one for the "unexpected", one per
-     "expected"). */
-  int yycount = 0;
-
-  /* There are many possibilities here to consider:
-     - If this state is a consistent state with a default action, then
-       the only way this function was invoked is if the default action
-       is an error action.  In that case, don't check for expected
-       tokens because there are none.
-     - The only way there can be no lookahead present (in yychar) is if
-       this state is a consistent state with a default action.  Thus,
-       detecting the absence of a lookahead is sufficient to determine
-       that there is no unexpected or expected token to report.  In that
-       case, just report a simple "syntax error".
-     - Don't assume there isn't a lookahead just because this state is a
-       consistent state with a default action.  There might have been a
-       previous inconsistent state, consistent state with a non-default
-       action, or user semantic action that manipulated yychar.
-     - Of course, the expected token list depends on states to have
-       correct lookahead information, and it depends on the parser not
-       to perform extra reductions after fetching a lookahead from the
-       scanner and before detecting a syntax error.  Thus, state merging
-       (from LALR or IELR) and default reductions corrupt the expected
-       token list.  However, the list is correct for canonical LR with
-       one exception: it will still contain any token that will not be
-       accepted due to an error action in a later state.
-  */
-  if (yytoken != YYEMPTY)
-    {
-      int yyn = yypact[*yyssp];
-      yyarg[yycount++] = yytname[yytoken];
-      if (!yypact_value_is_default (yyn))
-        {
-          /* Start YYX at -YYN if negative to avoid negative indexes in
-             YYCHECK.  In other words, skip the first -YYN actions for
-             this state because they are default actions.  */
-          int yyxbegin = yyn < 0 ? -yyn : 0;
-          /* Stay within bounds of both yycheck and yytname.  */
-          int yychecklim = YYLAST - yyn + 1;
-          int yyxend = yychecklim < YYNTOKENS ? yychecklim : YYNTOKENS;
-          int yyx;
-
-          for (yyx = yyxbegin; yyx < yyxend; ++yyx)
-            if (yycheck[yyx + yyn] == yyx && yyx != YYTERROR
-                && !yytable_value_is_error (yytable[yyx + yyn]))
-              {
-                if (yycount == YYERROR_VERBOSE_ARGS_MAXIMUM)
-                  {
-                    yycount = 1;
-                    yysize = yysize0;
-                    break;
-                  }
-                yyarg[yycount++] = yytname[yyx];
-                {
-                  YYSIZE_T yysize1 = yysize + yytnamerr (YY_NULLPTR, yytname[yyx]);
-                  if (! (yysize <= yysize1
-                         && yysize1 <= YYSTACK_ALLOC_MAXIMUM))
-                    return 2;
-                  yysize = yysize1;
-                }
-              }
-        }
-    }
-
-  switch (yycount)
-    {
-# define YYCASE_(N, S)                      \
-      case N:                               \
-        yyformat = S;                       \
-      break
-      YYCASE_(0, YY_("syntax error"));
-      YYCASE_(1, YY_("syntax error, unexpected %s"));
-      YYCASE_(2, YY_("syntax error, unexpected %s, expecting %s"));
-      YYCASE_(3, YY_("syntax error, unexpected %s, expecting %s or %s"));
-      YYCASE_(4, YY_("syntax error, unexpected %s, expecting %s or %s or %s"));
-      YYCASE_(5, YY_("syntax error, unexpected %s, expecting %s or %s or %s or %s"));
-# undef YYCASE_
-    }
-
-  {
-    YYSIZE_T yysize1 = yysize + yystrlen (yyformat);
-    if (! (yysize <= yysize1 && yysize1 <= YYSTACK_ALLOC_MAXIMUM))
-      return 2;
-    yysize = yysize1;
-  }
-
-  if (*yymsg_alloc < yysize)
-    {
-      *yymsg_alloc = 2 * yysize;
-      if (! (yysize <= *yymsg_alloc
-             && *yymsg_alloc <= YYSTACK_ALLOC_MAXIMUM))
-        *yymsg_alloc = YYSTACK_ALLOC_MAXIMUM;
-      return 1;
-    }
-
-  /* Avoid sprintf, as that infringes on the user's name space.
-     Don't have undefined behavior even if the translation
-     produced a string with the wrong number of "%s"s.  */
-  {
-    char *yyp = *yymsg;
-    int yyi = 0;
-    while ((*yyp = *yyformat) != '\0')
-      if (*yyp == '%' && yyformat[1] == 's' && yyi < yycount)
-        {
-          yyp += yytnamerr (yyp, yyarg[yyi++]);
-          yyformat += 2;
-        }
-      else
-        {
-          yyp++;
-          yyformat++;
-        }
-  }
-  return 0;
-}
-#endif /* YYERROR_VERBOSE */
-
-/*-----------------------------------------------.
-| Release the memory associated to this symbol.  |
-`-----------------------------------------------*/
-
-static void
-yydestruct (const char *yymsg, int yytype, YYSTYPE *yyvaluep, void* yyscanner, xhpast::Node** root)
-{
-  YYUSE (yyvaluep);
-  YYUSE (yyscanner);
-  YYUSE (root);
-  if (!yymsg)
-    yymsg = "Deleting";
-  YY_SYMBOL_PRINT (yymsg, yytype, yyvaluep, yylocationp);
-
-  YY_IGNORE_MAYBE_UNINITIALIZED_BEGIN
-  YYUSE (yytype);
-  YY_IGNORE_MAYBE_UNINITIALIZED_END
-}
-
-
-
-
-/*----------.
-| yyparse.  |
-`----------*/
-
-int
-yyparse (void* yyscanner, xhpast::Node** root)
-{
-/* The lookahead symbol.  */
-int yychar;
-
-
-/* The semantic value of the lookahead symbol.  */
-/* Default value used for initialization, for pacifying older GCCs
-   or non-GCC compilers.  */
-YY_INITIAL_VALUE (static YYSTYPE yyval_default;)
-YYSTYPE yylval YY_INITIAL_VALUE (= yyval_default);
-
-    /* Number of syntax errors so far.  */
-    int yynerrs;
-
-    int yystate;
-    /* Number of tokens to shift before error messages enabled.  */
-    int yyerrstatus;
-
-    /* The stacks and their tools:
-       'yyss': related to states.
-       'yyvs': related to semantic values.
-
-       Refer to the stacks through separate pointers, to allow yyoverflow
-       to reallocate them elsewhere.  */
-
-    /* The state stack.  */
-    yytype_int16 yyssa[YYINITDEPTH];
-    yytype_int16 *yyss;
-    yytype_int16 *yyssp;
-
-    /* The semantic value stack.  */
-    YYSTYPE yyvsa[YYINITDEPTH];
-    YYSTYPE *yyvs;
-    YYSTYPE *yyvsp;
-
-    YYSIZE_T yystacksize;
-
-  int yyn;
-  int yyresult;
-  /* Lookahead token as an internal (translated) token number.  */
-  int yytoken = 0;
-  /* The variables used to return semantic value and location from the
-     action routines.  */
-  YYSTYPE yyval;
-
-#if YYERROR_VERBOSE
-  /* Buffer for error messages, and its allocated size.  */
-  char yymsgbuf[128];
-  char *yymsg = yymsgbuf;
-  YYSIZE_T yymsg_alloc = sizeof yymsgbuf;
-#endif
-
-#define YYPOPSTACK(N)   (yyvsp -= (N), yyssp -= (N))
-
-  /* The number of symbols on the RHS of the reduced rule.
-     Keep to zero when no symbol should be popped.  */
-  int yylen = 0;
-
-  yyssp = yyss = yyssa;
-  yyvsp = yyvs = yyvsa;
-  yystacksize = YYINITDEPTH;
-
-  YYDPRINTF ((stderr, "Starting parse\n"));
-
-  yystate = 0;
-  yyerrstatus = 0;
-  yynerrs = 0;
-  yychar = YYEMPTY; /* Cause a token to be read.  */
-  goto yysetstate;
-
-/*------------------------------------------------------------.
-| yynewstate -- Push a new state, which is found in yystate.  |
-`------------------------------------------------------------*/
- yynewstate:
-  /* In all cases, when you get here, the value and location stacks
-     have just been pushed.  So pushing a state here evens the stacks.  */
-  yyssp++;
-
- yysetstate:
-  *yyssp = yystate;
-
-  if (yyss + yystacksize - 1 <= yyssp)
-    {
-      /* Get the current used size of the three stacks, in elements.  */
-      YYSIZE_T yysize = yyssp - yyss + 1;
-
-#ifdef yyoverflow
-      {
-        /* Give user a chance to reallocate the stack.  Use copies of
-           these so that the &'s don't force the real ones into
-           memory.  */
-        YYSTYPE *yyvs1 = yyvs;
-        yytype_int16 *yyss1 = yyss;
-
-        /* Each stack pointer address is followed by the size of the
-           data in use in that stack, in bytes.  This used to be a
-           conditional around just the two extra args, but that might
-           be undefined if yyoverflow is a macro.  */
-        yyoverflow (YY_("memory exhausted"),
-                    &yyss1, yysize * sizeof (*yyssp),
-                    &yyvs1, yysize * sizeof (*yyvsp),
-                    &yystacksize);
-
-        yyss = yyss1;
-        yyvs = yyvs1;
-      }
-#else /* no yyoverflow */
-# ifndef YYSTACK_RELOCATE
-      goto yyexhaustedlab;
-# else
-      /* Extend the stack our own way.  */
-      if (YYMAXDEPTH <= yystacksize)
-        goto yyexhaustedlab;
-      yystacksize *= 2;
-      if (YYMAXDEPTH < yystacksize)
-        yystacksize = YYMAXDEPTH;
-
-      {
-        yytype_int16 *yyss1 = yyss;
-        union yyalloc *yyptr =
-          (union yyalloc *) YYSTACK_ALLOC (YYSTACK_BYTES (yystacksize));
-        if (! yyptr)
-          goto yyexhaustedlab;
-        YYSTACK_RELOCATE (yyss_alloc, yyss);
-        YYSTACK_RELOCATE (yyvs_alloc, yyvs);
-#  undef YYSTACK_RELOCATE
-        if (yyss1 != yyssa)
-          YYSTACK_FREE (yyss1);
-      }
-# endif
-#endif /* no yyoverflow */
-
-      yyssp = yyss + yysize - 1;
-      yyvsp = yyvs + yysize - 1;
-
-      YYDPRINTF ((stderr, "Stack size increased to %lu\n",
-                  (unsigned long int) yystacksize));
-
-      if (yyss + yystacksize - 1 <= yyssp)
-        YYABORT;
-    }
-
-  YYDPRINTF ((stderr, "Entering state %d\n", yystate));
-
-  if (yystate == YYFINAL)
-    YYACCEPT;
-
-  goto yybackup;
-
-/*-----------.
-| yybackup.  |
-`-----------*/
-yybackup:
-
-  /* Do appropriate processing given the current state.  Read a
-     lookahead token if we need one and don't already have one.  */
-
-  /* First try to decide what to do without reference to lookahead token.  */
-  yyn = yypact[yystate];
-  if (yypact_value_is_default (yyn))
-    goto yydefault;
-
-  /* Not known => get a lookahead token if don't already have one.  */
-
-  /* YYCHAR is either YYEMPTY or YYEOF or a valid lookahead symbol.  */
-  if (yychar == YYEMPTY)
-    {
-      YYDPRINTF ((stderr, "Reading a token: "));
-      yychar = yylex (&yylval, yyscanner);
-    }
-
-  if (yychar <= YYEOF)
-    {
-      yychar = yytoken = YYEOF;
-      YYDPRINTF ((stderr, "Now at end of input.\n"));
-    }
-  else
-    {
-      yytoken = YYTRANSLATE (yychar);
-      YY_SYMBOL_PRINT ("Next token is", yytoken, &yylval, &yylloc);
-    }
-
-  /* If the proper action on seeing token YYTOKEN is to reduce or to
-     detect an error, take that action.  */
-  yyn += yytoken;
-  if (yyn < 0 || YYLAST < yyn || yycheck[yyn] != yytoken)
-    goto yydefault;
-  yyn = yytable[yyn];
-  if (yyn <= 0)
-    {
-      if (yytable_value_is_error (yyn))
-        goto yyerrlab;
-      yyn = -yyn;
-      goto yyreduce;
-    }
-
-  /* Count tokens shifted since error; after three, turn off error
-     status.  */
-  if (yyerrstatus)
-    yyerrstatus--;
-
-  /* Shift the lookahead token.  */
-  YY_SYMBOL_PRINT ("Shifting", yytoken, &yylval, &yylloc);
-
-  /* Discard the shifted token.  */
-  yychar = YYEMPTY;
-
-  yystate = yyn;
-  YY_IGNORE_MAYBE_UNINITIALIZED_BEGIN
-  *++yyvsp = yylval;
-  YY_IGNORE_MAYBE_UNINITIALIZED_END
-
-  goto yynewstate;
-
-
-/*-----------------------------------------------------------.
-| yydefault -- do the default action for the current state.  |
-`-----------------------------------------------------------*/
-yydefault:
-  yyn = yydefact[yystate];
-  if (yyn == 0)
-    goto yyerrlab;
-  goto yyreduce;
-
-
-/*-----------------------------.
-| yyreduce -- Do a reduction.  |
-`-----------------------------*/
-yyreduce:
-  /* yyn is the number of a rule to reduce with.  */
-  yylen = yyr2[yyn];
-
-  /* If YYLEN is nonzero, implement the default value of the action:
-     '$$ = $1'.
-
-     Otherwise, the following line sets YYVAL to garbage.
-     This behavior is undocumented and Bison
-     users should not rely upon it.  Assigning to YYVAL
-     unconditionally makes the parser a bit smaller, and it avoids a
-     GCC warning that YYVAL may be used uninitialized.  */
-  yyval = yyvsp[1-yylen];
-
-
-  YY_REDUCE_PRINT (yyn);
-  switch (yyn)
-    {
-        case 2:
-#line 210 "parser.y" /* yacc.c:1646  */
-    {
-    *root = NNEW(n_PROGRAM)->appendChild((yyvsp[0]));
-  }
-#line 3429 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 3:
-#line 216 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = (yyvsp[-1])->appendChild((yyvsp[0]));
-  }
-#line 3437 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 4:
-#line 219 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_STATEMENT_LIST);
-  }
-#line 3445 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 5:
-#line 225 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NTYPE((yyvsp[0]), n_SYMBOL_NAME);
-  }
-#line 3453 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 6:
-#line 228 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NMORE((yyvsp[-2]), (yyvsp[0]));
-  }
-#line 3461 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 10:
-#line 237 "parser.y" /* yacc.c:1646  */
-    {
-    (yyvsp[-3]) = NSPAN((yyvsp[-3]), n_HALT_COMPILER, (yyvsp[-1]));
-    (yyval) = NNEW(n_STATEMENT)->appendChild((yyvsp[-3]));
-    NMORE((yyval), (yyvsp[0]));
-  }
-#line 3471 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 11:
-#line 242 "parser.y" /* yacc.c:1646  */
-    {
-    NSPAN((yyvsp[-2]), n_NAMESPACE, (yyvsp[-1]));
-    (yyvsp[-2])->appendChild((yyvsp[-1]));
-    (yyvsp[-2])->appendChild(NNEW(n_EMPTY));
-    (yyval) = NNEW(n_STATEMENT)->appendChild((yyvsp[-2]));
-    NMORE((yyval), (yyvsp[0]));
-  }
-#line 3483 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 12:
-#line 249 "parser.y" /* yacc.c:1646  */
-    {
-  NSPAN((yyvsp[-4]), n_NAMESPACE, (yyvsp[0]));
-  (yyvsp[-4])->appendChild((yyvsp[-3]));
-  (yyvsp[-4])->appendChild(NEXPAND((yyvsp[-2]), (yyvsp[-1]), (yyvsp[0])));
-  (yyval) = NNEW(n_STATEMENT)->appendChild((yyvsp[-4]));
-  }
-#line 3494 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 13:
-#line 255 "parser.y" /* yacc.c:1646  */
-    {
-  NSPAN((yyvsp[-3]), n_NAMESPACE, (yyvsp[0]));
-  (yyvsp[-3])->appendChild(NNEW(n_EMPTY));
-  NMORE((yyvsp[-1]), (yyvsp[0]));
-  NMORE((yyvsp[-1]), (yyvsp[-2]));
-  (yyvsp[-3])->appendChild((yyvsp[-1]));
-  (yyval) = NNEW(n_STATEMENT)->appendChild((yyvsp[-3]));
-  }
-#line 3507 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 14:
-#line 263 "parser.y" /* yacc.c:1646  */
-    {
-  NMORE((yyvsp[-1]), (yyvsp[-2]));
-  (yyval) = NNEW(n_STATEMENT)->appendChild((yyvsp[-1]));
-  NMORE((yyval), (yyvsp[0]));
-  }
-#line 3517 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 15:
-#line 268 "parser.y" /* yacc.c:1646  */
-    {
-  (yyval) = NNEW(n_STATEMENT)->appendChild((yyvsp[-1]));
-  NMORE((yyval), (yyvsp[0]));
-  }
-#line 3526 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 16:
-#line 275 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = (yyvsp[-2])->appendChild((yyvsp[0]));
-  }
-#line 3534 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 17:
-#line 278 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_USE_LIST);
-    (yyval)->appendChild((yyvsp[0]));
-  }
-#line 3543 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 18:
-#line 285 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_USE);
-    (yyval)->appendChild((yyvsp[0]));
-    (yyval)->appendChild(NNEW(n_EMPTY));
-  }
-#line 3553 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 19:
-#line 290 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_USE);
-    (yyval)->appendChild((yyvsp[-2]));
-    NTYPE((yyvsp[0]), n_STRING);
-    (yyval)->appendChild((yyvsp[0]));
-  }
-#line 3564 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 20:
-#line 296 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_USE);
-    NMORE((yyvsp[0]), (yyvsp[-1]));
-    (yyval)->appendChild((yyvsp[0]));
-    (yyval)->appendChild(NNEW(n_EMPTY));
-  }
-#line 3575 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 21:
-#line 302 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_USE);
-    NMORE((yyvsp[-2]), (yyvsp[-3]));
-    (yyval)->appendChild((yyvsp[-2]));
-    NTYPE((yyvsp[0]), n_STRING);
-    (yyval)->appendChild((yyvsp[0]));
-  }
-#line 3587 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 22:
-#line 312 "parser.y" /* yacc.c:1646  */
-    {
-    NMORE((yyval), (yyvsp[0]));
-    (yyval)->appendChild(
-      NNEW(n_CONSTANT_DECLARATION)
-        ->appendChild(NTYPE((yyvsp[-2]), n_STRING))
-        ->appendChild((yyvsp[0])));
-  }
-#line 3599 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 23:
-#line 319 "parser.y" /* yacc.c:1646  */
-    {
-    NSPAN((yyval), n_CONSTANT_DECLARATION_LIST, (yyvsp[0]));
-    (yyval)->appendChild(
-      NNEW(n_CONSTANT_DECLARATION)
-        ->appendChild(NTYPE((yyvsp[-2]), n_STRING))
-        ->appendChild((yyvsp[0])));
-  }
-#line 3611 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 24:
-#line 329 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = (yyvsp[-1])->appendChild((yyvsp[0]));
-  }
-#line 3619 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 25:
-#line 332 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_STATEMENT_LIST);
-  }
-#line 3627 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 29:
-#line 341 "parser.y" /* yacc.c:1646  */
-    {
-  (yyvsp[-3]) = NSPAN((yyvsp[-3]), n_HALT_COMPILER, (yyvsp[-1]));
-  (yyval) = NNEW(n_STATEMENT)->appendChild((yyvsp[-3]));
-  NMORE((yyval), (yyvsp[0]));
-  }
-#line 3637 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 31:
-#line 350 "parser.y" /* yacc.c:1646  */
-    {
-    NTYPE((yyvsp[-1]), n_STRING);
-    (yyval) = NNEW(n_LABEL);
-    (yyval)->appendChild((yyvsp[-1]));
-    NMORE((yyval), (yyvsp[0]));
-  }
-#line 3648 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 32:
-#line 356 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NTYPE((yyvsp[0]), n_OPEN_TAG);
-  }
-#line 3656 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 33:
-#line 359 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NTYPE((yyvsp[0]), n_OPEN_TAG);
-  }
-#line 3664 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 34:
-#line 362 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NTYPE((yyvsp[0]), n_CLOSE_TAG);
-  }
-#line 3672 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 35:
-#line 368 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NEXPAND((yyvsp[-2]), (yyvsp[-1]), (yyvsp[0]));
-  }
-#line 3680 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 36:
-#line 371 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_CONDITION_LIST);
-
-    (yyvsp[-6]) = NTYPE((yyvsp[-6]), n_IF);
-    (yyvsp[-6])->appendChild(NSPAN((yyvsp[-5]), n_CONTROL_CONDITION, (yyvsp[-3]))->appendChild((yyvsp[-4])));
-    (yyvsp[-6])->appendChild((yyvsp[-2]));
-
-    (yyval)->appendChild((yyvsp[-6]));
-    (yyval)->appendChildren((yyvsp[-1]));
-
-    // Hacks: merge a list of if (x) { } else if (y) { } into a single condition
-    // list instead of a condition tree.
-
-    if ((yyvsp[0])->type == n_EMPTY) {
-      // Ignore.
-    } else if ((yyvsp[0])->type == n_ELSE) {
-      xhpast::Node *stype = (yyvsp[0])->firstChild()->firstChild();
-      if (stype && stype->type == n_CONDITION_LIST) {
-        NTYPE(stype->firstChild(), n_ELSEIF);
-        stype->firstChild()->l_tok = (yyvsp[0])->l_tok;
-        (yyval)->appendChildren(stype);
-      } else {
-        (yyval)->appendChild((yyvsp[0]));
-      }
-    } else {
-      (yyval)->appendChild((yyvsp[0]));
-    }
-
-    (yyval) = NNEW(n_STATEMENT)->appendChild((yyval));
-  }
-#line 3715 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 37:
-#line 405 "parser.y" /* yacc.c:1646  */
-    {
-
-    (yyval) = NNEW(n_CONDITION_LIST);
-    NTYPE((yyvsp[-9]), n_IF);
-    (yyvsp[-9])->appendChild(NSPAN((yyvsp[-8]), n_CONTROL_CONDITION, (yyvsp[-6]))->appendChild((yyvsp[-7])));
-    (yyvsp[-9])->appendChild((yyvsp[-4]));
-
-    (yyval)->appendChild((yyvsp[-9]));
-    (yyval)->appendChildren((yyvsp[-3]));
-    (yyval)->appendChild((yyvsp[-2]));
-    NMORE((yyval), (yyvsp[-1]));
-
-    (yyval) = NNEW(n_STATEMENT)->appendChild((yyval));
-    NMORE((yyval), (yyvsp[0]));
-  }
-#line 3735 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 38:
-#line 420 "parser.y" /* yacc.c:1646  */
-    {
-    NTYPE((yyvsp[-4]), n_WHILE);
-    (yyvsp[-4])->appendChild(NSPAN((yyvsp[-3]), n_CONTROL_CONDITION, (yyvsp[-1]))->appendChild((yyvsp[-2])));
-    (yyvsp[-4])->appendChild((yyvsp[0]));
-
-    (yyval) = NNEW(n_STATEMENT)->appendChild((yyvsp[-4]));
-  }
-#line 3747 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 39:
-#line 427 "parser.y" /* yacc.c:1646  */
-    {
-    NTYPE((yyvsp[-6]), n_DO_WHILE);
-    (yyvsp[-6])->appendChild((yyvsp[-5]));
-    (yyvsp[-6])->appendChild(NSPAN((yyvsp[-3]), n_CONTROL_CONDITION, (yyvsp[-1]))->appendChild((yyvsp[-2])));
-
-    (yyval) = NNEW(n_STATEMENT)->appendChild((yyvsp[-6]));
-    NMORE((yyval), (yyvsp[0]));
-  }
-#line 3760 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 40:
-#line 435 "parser.y" /* yacc.c:1646  */
-    {
-    NTYPE((yyvsp[-8]), n_FOR);
-
-    NSPAN((yyvsp[-7]), n_FOR_EXPRESSION, (yyvsp[-1]))
-      ->appendChild((yyvsp[-6]))
-      ->appendChild((yyvsp[-4]))
-      ->appendChild((yyvsp[-2]));
-
-    (yyvsp[-8])->appendChild((yyvsp[-7]));
-    (yyvsp[-8])->appendChild((yyvsp[0]));
-
-    (yyval) = NNEW(n_STATEMENT)->appendChild((yyvsp[-8]));
-  }
-#line 3778 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 41:
-#line 448 "parser.y" /* yacc.c:1646  */
-    {
-    NTYPE((yyvsp[-4]), n_SWITCH);
-    (yyvsp[-4])->appendChild(NSPAN((yyvsp[-3]), n_CONTROL_CONDITION, (yyvsp[-1]))->appendChild((yyvsp[-2])));
-    (yyvsp[-4])->appendChild((yyvsp[0]));
-
-    (yyval) = NNEW(n_STATEMENT)->appendChild((yyvsp[-4]));
-  }
-#line 3790 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 42:
-#line 455 "parser.y" /* yacc.c:1646  */
-    {
-    NTYPE((yyvsp[-1]), n_BREAK);
-    (yyvsp[-1])->appendChild(NNEW(n_EMPTY));
-
-    (yyval) = NNEW(n_STATEMENT)->appendChild((yyvsp[-1]));
-    NMORE((yyval), (yyvsp[0]));
-  }
-#line 3802 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 43:
-#line 462 "parser.y" /* yacc.c:1646  */
-    {
-    NTYPE((yyvsp[-2]), n_BREAK);
-    (yyvsp[-2])->appendChild((yyvsp[-1]));
-
-    (yyval) = NNEW(n_STATEMENT)->appendChild((yyvsp[-2]));
-    NMORE((yyval), (yyvsp[0]));
-  }
-#line 3814 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 44:
-#line 469 "parser.y" /* yacc.c:1646  */
-    {
-    NTYPE((yyvsp[-1]), n_CONTINUE);
-    (yyvsp[-1])->appendChild(NNEW(n_EMPTY));
-
-    (yyval) = NNEW(n_STATEMENT)->appendChild((yyvsp[-1]));
-    NMORE((yyval), (yyvsp[0]));
-  }
-#line 3826 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 45:
-#line 476 "parser.y" /* yacc.c:1646  */
-    {
-    NTYPE((yyvsp[-2]), n_CONTINUE);
-    (yyvsp[-2])->appendChild((yyvsp[-1]));
-
-    (yyval) = NNEW(n_STATEMENT)->appendChild((yyvsp[-2]));
-    NMORE((yyval), (yyvsp[0]));
-  }
-#line 3838 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 46:
-#line 483 "parser.y" /* yacc.c:1646  */
-    {
-    NTYPE((yyvsp[-1]), n_RETURN);
-    (yyvsp[-1])->appendChild(NNEW(n_EMPTY));
-
-    (yyval) = NNEW(n_STATEMENT)->appendChild((yyvsp[-1]));
-    NMORE((yyval), (yyvsp[0]));
-  }
-#line 3850 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 47:
-#line 490 "parser.y" /* yacc.c:1646  */
-    {
-    NTYPE((yyvsp[-2]), n_RETURN);
-    (yyvsp[-2])->appendChild((yyvsp[-1]));
-
-    (yyval) = NNEW(n_STATEMENT)->appendChild((yyvsp[-2]));
-    NMORE((yyval), (yyvsp[0]));
-  }
-#line 3862 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 48:
-#line 497 "parser.y" /* yacc.c:1646  */
-    {
-    NTYPE((yyvsp[-2]), n_RETURN);
-    (yyvsp[-2])->appendChild((yyvsp[-1]));
-
-    (yyval) = NNEW(n_STATEMENT)->appendChild((yyvsp[-2]));
-    NMORE((yyval), (yyvsp[0]));
-  }
-#line 3874 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 49:
-#line 504 "parser.y" /* yacc.c:1646  */
-    {
-    NMORE((yyvsp[-1]), (yyvsp[-2]));
-    (yyval) = NNEW(n_STATEMENT)->appendChild((yyvsp[-1]));
-    NMORE((yyval), (yyvsp[0]));
-  }
-#line 3884 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 50:
-#line 509 "parser.y" /* yacc.c:1646  */
-    {
-    NMORE((yyvsp[-1]), (yyvsp[-2]));
-    (yyval) = NNEW(n_STATEMENT)->appendChild((yyvsp[-1]));
-    NMORE((yyval), (yyvsp[0]));
-  }
-#line 3894 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 51:
-#line 514 "parser.y" /* yacc.c:1646  */
-    {
-    NMORE((yyvsp[-1]), (yyvsp[-2]));
-    (yyval) = NNEW(n_STATEMENT)->appendChild((yyvsp[-1]));
-    NMORE((yyval), (yyvsp[0]));
-  }
-#line 3904 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 52:
-#line 519 "parser.y" /* yacc.c:1646  */
-    {
-    NTYPE((yyvsp[0]), n_INLINE_HTML);
-    (yyval) = (yyvsp[0]);
-  }
-#line 3913 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 53:
-#line 523 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_STATEMENT)->appendChild((yyvsp[-1]));
-    NMORE((yyval), (yyvsp[0]));
-  }
-#line 3922 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 54:
-#line 527 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_STATEMENT)->appendChild((yyvsp[-1]));
-    NMORE((yyval), (yyvsp[0]));
-  }
-#line 3931 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 55:
-#line 531 "parser.y" /* yacc.c:1646  */
-    {
-    NMORE((yyvsp[-2]), (yyvsp[-1]));
-    NMORE((yyvsp[-2]), (yyvsp[-4]));
-    (yyval) = NNEW(n_STATEMENT)->appendChild((yyvsp[-2]));
-    NMORE((yyval), (yyvsp[0]));
-  }
-#line 3942 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 56:
-#line 538 "parser.y" /* yacc.c:1646  */
-    {
-    NTYPE((yyvsp[-7]), n_FOREACH);
-    NSPAN((yyvsp[-6]), n_FOREACH_EXPRESSION, (yyvsp[-1]));
-    (yyvsp[-6])->appendChild((yyvsp[-5]));
-    if ((yyvsp[-2])->type == n_EMPTY) {
-      (yyvsp[-6])->appendChild((yyvsp[-2]));
-      (yyvsp[-6])->appendChild((yyvsp[-3]));
-    } else {
-      (yyvsp[-6])->appendChild((yyvsp[-3]));
-      (yyvsp[-6])->appendChild((yyvsp[-2]));
-    }
-    (yyvsp[-7])->appendChild((yyvsp[-6]));
-
-    (yyvsp[-7])->appendChild((yyvsp[0]));
-
-    (yyval) = NNEW(n_STATEMENT)->appendChild((yyvsp[-7]));
-  }
-#line 3964 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 57:
-#line 556 "parser.y" /* yacc.c:1646  */
-    {
-    NTYPE((yyvsp[-7]), n_FOREACH);
-    NSPAN((yyvsp[-6]), n_FOREACH_EXPRESSION, (yyvsp[-1]));
-    (yyvsp[-6])->appendChild((yyvsp[-5]));
-    if ((yyvsp[-2])->type == n_EMPTY) {
-      (yyvsp[-6])->appendChild((yyvsp[-2]));
-      (yyvsp[-6])->appendChild((yyvsp[-3]));
-    } else {
-      (yyvsp[-6])->appendChild((yyvsp[-3]));
-      (yyvsp[-6])->appendChild((yyvsp[-2]));
-    }
-    (yyvsp[-7])->appendChild((yyvsp[-6]));
-    (yyvsp[-7])->appendChild((yyvsp[0]));
-
-    (yyval) = NNEW(n_STATEMENT)->appendChild((yyvsp[-7]));
-  }
-#line 3985 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 58:
-#line 572 "parser.y" /* yacc.c:1646  */
-    {
-    NTYPE((yyvsp[-4]), n_DECLARE);
-    (yyvsp[-4])->appendChild((yyvsp[-2]));
-    (yyvsp[-4])->appendChild((yyvsp[0]));
-    (yyval) = NNEW(n_STATEMENT)->appendChild((yyvsp[-4]));
-  }
-#line 3996 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 59:
-#line 578 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_STATEMENT)->appendChild(NNEW(n_EMPTY));
-    NMORE((yyval), (yyvsp[0]));
-  }
-#line 4005 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 60:
-#line 582 "parser.y" /* yacc.c:1646  */
-    {
-    NTYPE((yyvsp[-5]), n_TRY);
-    (yyvsp[-5])->appendChild(NEXPAND((yyvsp[-4]), (yyvsp[-3]), (yyvsp[-2])));
-
-    (yyvsp[-5])->appendChild((yyvsp[-1]));
-    (yyvsp[-5])->appendChild((yyvsp[0]));
-
-    (yyval) = NNEW(n_STATEMENT)->appendChild((yyvsp[-5]));
-  }
-#line 4019 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 61:
-#line 591 "parser.y" /* yacc.c:1646  */
-    {
-    NTYPE((yyvsp[-4]), n_TRY);
-    (yyvsp[-4])->appendChild(NEXPAND((yyvsp[-3]), (yyvsp[-2]), (yyvsp[-1])));
-
-    (yyvsp[-4])->appendChild(NNEW(n_CATCH_LIST));
-    (yyvsp[-4])->appendChild((yyvsp[0]));
-
-    (yyval) = NNEW(n_STATEMENT)->appendChild((yyvsp[-4]));
-  }
-#line 4033 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 62:
-#line 600 "parser.y" /* yacc.c:1646  */
-    {
-  NTYPE((yyvsp[-2]), n_THROW);
-  (yyvsp[-2])->appendChild((yyvsp[-1]));
-
-  (yyval) = NNEW(n_STATEMENT)->appendChild((yyvsp[-2]));
-  NMORE((yyval), (yyvsp[0]));
-
-  }
-#line 4046 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 63:
-#line 608 "parser.y" /* yacc.c:1646  */
-    {
-  NTYPE((yyvsp[-2]), n_GOTO);
-  NTYPE((yyvsp[-1]), n_STRING);
-  (yyvsp[-2])->appendChild((yyvsp[-1]));
-
-  (yyval) = NNEW(n_STATEMENT)->appendChild((yyvsp[-2]));
-  NMORE((yyval), (yyvsp[0]));
-  }
-#line 4059 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 64:
-#line 619 "parser.y" /* yacc.c:1646  */
-    {
-    (yyvsp[-1])->appendChild((yyvsp[0]));
-    (yyval) = (yyvsp[-1]);
-  }
-#line 4068 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 65:
-#line 623 "parser.y" /* yacc.c:1646  */
-    {
-  (yyval) = NNEW(n_CATCH_LIST);
-  (yyval)->appendChild((yyvsp[0]));
-}
-#line 4077 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 66:
-#line 630 "parser.y" /* yacc.c:1646  */
-    {
-    NTYPE((yyvsp[-7]), n_CATCH);
-    (yyvsp[-7])->appendChild((yyvsp[-5]));
-    (yyvsp[-7])->appendChild(NTYPE((yyvsp[-4]), n_VARIABLE));
-    (yyvsp[-7])->appendChild(NEXPAND((yyvsp[-2]), (yyvsp[-1]), (yyvsp[0])));
-    NMORE((yyvsp[-7]), (yyvsp[0]));
-    (yyval) = (yyvsp[-7]);
-  }
-#line 4090 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 67:
-#line 641 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_EMPTY);
-  }
-#line 4098 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 69:
-#line 648 "parser.y" /* yacc.c:1646  */
-    {
-    NTYPE((yyvsp[-3]), n_FINALLY);
-    (yyvsp[-3])->appendChild((yyvsp[-1]));
-    NMORE((yyvsp[-3]), (yyvsp[0]));
-    (yyval) = (yyvsp[-3]);
-  }
-#line 4109 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 70:
-#line 657 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_UNSET_LIST);
-    (yyval)->appendChild((yyvsp[0]));
-  }
-#line 4118 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 71:
-#line 661 "parser.y" /* yacc.c:1646  */
-    {
-    (yyvsp[-2])->appendChild((yyvsp[0]));
-    (yyval) = (yyvsp[-2]);
-  }
-#line 4127 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 75:
-#line 680 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_EMPTY);
-  }
-#line 4135 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 76:
-#line 683 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NTYPE((yyvsp[0]), n_REFERENCE);
-  }
-#line 4143 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 77:
-#line 690 "parser.y" /* yacc.c:1646  */
-    {
-    NSPAN((yyvsp[-9]), n_FUNCTION_DECLARATION, (yyvsp[-1]));
-    (yyvsp[-9])->appendChild(NNEW(n_EMPTY));
-    (yyvsp[-9])->appendChild((yyvsp[-8]));
-    (yyvsp[-9])->appendChild(NTYPE((yyvsp[-7]), n_STRING));
-    (yyvsp[-9])->appendChild(NEXPAND((yyvsp[-6]), (yyvsp[-5]), (yyvsp[-4])));
-    (yyvsp[-9])->appendChild(NNEW(n_EMPTY));
-    (yyvsp[-9])->appendChild((yyvsp[-3]));
-    (yyvsp[-9])->appendChild(NEXPAND((yyvsp[-2]), (yyvsp[-1]), (yyvsp[0])));
-
-    (yyval) = NNEW(n_STATEMENT)->appendChild((yyvsp[-9]));
-  }
-#line 4160 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 78:
-#line 706 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_CLASS_DECLARATION);
-    (yyval)->appendChild((yyvsp[-6]));
-    (yyval)->appendChild(NTYPE((yyvsp[-5]), n_CLASS_NAME));
-    (yyval)->appendChild((yyvsp[-4]));
-    (yyval)->appendChild((yyvsp[-3]));
-    (yyval)->appendChild(NEXPAND((yyvsp[-2]), (yyvsp[-1]), (yyvsp[0])));
-    NMORE((yyval), (yyvsp[0]));
-
-    (yyval) = NNEW(n_STATEMENT)->appendChild((yyval));
-  }
-#line 4176 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 79:
-#line 717 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_INTERFACE_DECLARATION);
-    (yyval)->appendChild(NNEW(n_CLASS_ATTRIBUTES));
-    NMORE((yyval), (yyvsp[-5]));
-    (yyval)->appendChild(NTYPE((yyvsp[-4]), n_CLASS_NAME));
-    (yyval)->appendChild((yyvsp[-3]));
-    (yyval)->appendChild(NNEW(n_EMPTY));
-    (yyval)->appendChild(NEXPAND((yyvsp[-2]), (yyvsp[-1]), (yyvsp[0])));
-    NMORE((yyval), (yyvsp[0]));
-
-    (yyval) = NNEW(n_STATEMENT)->appendChild((yyval));
-  }
-#line 4193 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 80:
-#line 732 "parser.y" /* yacc.c:1646  */
-    {
-    NTYPE((yyvsp[0]), n_CLASS_ATTRIBUTES);
-    (yyval) = (yyvsp[0]);
-  }
-#line 4202 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 81:
-#line 736 "parser.y" /* yacc.c:1646  */
-    {
-    NTYPE((yyvsp[0]), n_CLASS_ATTRIBUTES);
-    NMORE((yyvsp[0]), (yyvsp[-1]));
-    (yyvsp[0])->appendChild(NTYPE((yyvsp[-1]), n_STRING));
-
-    (yyval) = (yyvsp[0]);
-  }
-#line 4214 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 82:
-#line 743 "parser.y" /* yacc.c:1646  */
-    {
-    NTYPE((yyvsp[0]), n_CLASS_ATTRIBUTES);
-    NMORE((yyvsp[0]), (yyvsp[-1]));
-    (yyvsp[0])->appendChild(NTYPE((yyvsp[-1]), n_STRING));
-
-    (yyval) = (yyvsp[0]);
-  }
-#line 4226 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 83:
-#line 750 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_CLASS_ATTRIBUTES);
-    (yyval)->appendChild(NTYPE((yyvsp[0]), n_STRING));
-  }
-#line 4235 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 84:
-#line 757 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_EMPTY);
-  }
-#line 4243 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 85:
-#line 760 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NTYPE((yyvsp[-1]), n_EXTENDS_LIST)->appendChild((yyvsp[0]));
-  }
-#line 4251 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 87:
-#line 770 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_EMPTY);
-  }
-#line 4259 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 88:
-#line 773 "parser.y" /* yacc.c:1646  */
-    {
-    NTYPE((yyvsp[-1]), n_EXTENDS_LIST);
-    (yyvsp[-1])->appendChildren((yyvsp[0]));
-    (yyval) = (yyvsp[-1]);
-  }
-#line 4269 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 89:
-#line 781 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_EMPTY);
-  }
-#line 4277 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 90:
-#line 784 "parser.y" /* yacc.c:1646  */
-    {
-    NTYPE((yyvsp[-1]), n_IMPLEMENTS_LIST);
-    (yyvsp[-1])->appendChildren((yyvsp[0]));
-    (yyval) = (yyvsp[-1]);
-  }
-#line 4287 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 91:
-#line 792 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_IMPLEMENTS_LIST)->appendChild((yyvsp[0]));
-  }
-#line 4295 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 92:
-#line 795 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = (yyvsp[-2])->appendChild((yyvsp[0]));
-  }
-#line 4303 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 93:
-#line 801 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_EMPTY);
-  }
-#line 4311 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 94:
-#line 804 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = (yyvsp[0]);
-  }
-#line 4319 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 96:
-#line 811 "parser.y" /* yacc.c:1646  */
-    {
-    NTYPE((yyvsp[-1]), n_VARIABLE_REFERENCE);
-    (yyvsp[-1])->appendChild((yyvsp[0]));
-    (yyval) = (yyvsp[-1]);
-  }
-#line 4329 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 98:
-#line 820 "parser.y" /* yacc.c:1646  */
-    {
-  NMORE((yyvsp[-2]), (yyvsp[-3]));
-  NMORE((yyvsp[-2]), (yyvsp[0]));
-  (yyval) = (yyvsp[-2]);
-  }
-#line 4339 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 100:
-#line 829 "parser.y" /* yacc.c:1646  */
-    {
-  NMORE((yyvsp[-2]), (yyvsp[-3]));
-  NMORE((yyvsp[-2]), (yyvsp[0]));
-  (yyval) = (yyvsp[-2]);
-  }
-#line 4349 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 102:
-#line 838 "parser.y" /* yacc.c:1646  */
-    {
-  NMORE((yyvsp[-2]), (yyvsp[-3]));
-  NMORE((yyvsp[-2]), (yyvsp[0]));
-  (yyval) = (yyvsp[-2]);
-  }
-#line 4359 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 103:
-#line 846 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_DECLARE_DECLARATION);
-    (yyval)->appendChild(NTYPE((yyvsp[-2]), n_STRING));
-    (yyval)->appendChild((yyvsp[0]));
-    (yyval) = NNEW(n_DECLARE_DECLARATION_LIST)->appendChild((yyval));
-  }
-#line 4370 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 104:
-#line 852 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_DECLARE_DECLARATION);
-    (yyval)->appendChild(NTYPE((yyvsp[-2]), n_STRING));
-    (yyval)->appendChild((yyvsp[0]));
-
-    (yyvsp[-4])->appendChild((yyval));
-    (yyval) = (yyvsp[-4]);
-  }
-#line 4383 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 105:
-#line 863 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NEXPAND((yyvsp[-2]), (yyvsp[-1]), (yyvsp[0]));
-  }
-#line 4391 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 106:
-#line 866 "parser.y" /* yacc.c:1646  */
-    {
-    // ...why does this rule exist?
-
-    NTYPE((yyvsp[-2]), n_STATEMENT);
-    (yyvsp[-3])->appendChild(NNEW(n_EMPTY));
-
-    (yyval) = NNEW(n_STATEMENT_LIST)->appendChild((yyvsp[-2]));
-    (yyval)->appendChildren((yyvsp[-1]));
-    NEXPAND((yyvsp[-3]), (yyval), (yyvsp[0]));
-  }
-#line 4406 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 107:
-#line 876 "parser.y" /* yacc.c:1646  */
-    {
-    NMORE((yyvsp[-2]), (yyvsp[0]));
-    NMORE((yyvsp[-2]), (yyvsp[-3]));
-    (yyval) = (yyvsp[-2]);
-  }
-#line 4416 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 108:
-#line 881 "parser.y" /* yacc.c:1646  */
-    {
-    NTYPE((yyvsp[-3]), n_STATEMENT);
-    (yyvsp[-4])->appendChild(NNEW(n_EMPTY));
-
-    (yyval) = NNEW(n_STATEMENT_LIST)->appendChild((yyvsp[-3]));
-    (yyval)->appendChildren((yyvsp[-2]));
-    NMORE((yyval), (yyvsp[0]));
-    NMORE((yyval), (yyvsp[-4]));
-  }
-#line 4430 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 109:
-#line 893 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_STATEMENT_LIST);
-  }
-#line 4438 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 110:
-#line 896 "parser.y" /* yacc.c:1646  */
-    {
-    NTYPE((yyvsp[-3]), n_CASE);
-    (yyvsp[-3])->appendChild((yyvsp[-2]));
-    (yyvsp[-3])->appendChild((yyvsp[0]));
-
-    (yyvsp[-4])->appendChild((yyvsp[-3]));
-    (yyval) = (yyvsp[-4]);
-  }
-#line 4451 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 111:
-#line 904 "parser.y" /* yacc.c:1646  */
-    {
-    NTYPE((yyvsp[-2]), n_DEFAULT);
-    (yyvsp[-2])->appendChild((yyvsp[0]));
-
-    (yyvsp[-3])->appendChild((yyvsp[-2]));
-    (yyval) = (yyvsp[-3]);
-  }
-#line 4463 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 115:
-#line 920 "parser.y" /* yacc.c:1646  */
-    {
-  NMORE((yyvsp[-2]), (yyvsp[0]));
-  NMORE((yyvsp[-2]), (yyvsp[-3]));
-  (yyval) = (yyvsp[-2]);
-  }
-#line 4473 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 116:
-#line 928 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_CONDITION_LIST);
-  }
-#line 4481 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 117:
-#line 931 "parser.y" /* yacc.c:1646  */
-    {
-    NTYPE((yyvsp[-4]), n_ELSEIF);
-    (yyvsp[-4])->appendChild(NSPAN((yyvsp[-3]), n_CONTROL_CONDITION, (yyvsp[-1]))->appendChild((yyvsp[-2])));
-    (yyvsp[-4])->appendChild((yyvsp[0]));
-
-    (yyval) = (yyvsp[-5])->appendChild((yyvsp[-4]));
-  }
-#line 4493 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 118:
-#line 941 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_CONDITION_LIST);
-  }
-#line 4501 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 119:
-#line 944 "parser.y" /* yacc.c:1646  */
-    {
-    NTYPE((yyvsp[-5]), n_ELSEIF);
-    (yyvsp[-5])->appendChild((yyvsp[-3]));
-    (yyvsp[-5])->appendChild((yyvsp[0]));
-
-    (yyval) = (yyvsp[-6])->appendChild((yyvsp[-5]));
-  }
-#line 4513 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 120:
-#line 954 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_EMPTY);
-  }
-#line 4521 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 121:
-#line 957 "parser.y" /* yacc.c:1646  */
-    {
-    NTYPE((yyvsp[-1]), n_ELSE);
-    (yyvsp[-1])->appendChild((yyvsp[0]));
-    (yyval) = (yyvsp[-1]);
-  }
-#line 4531 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 122:
-#line 965 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_EMPTY);
-  }
-#line 4539 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 123:
-#line 968 "parser.y" /* yacc.c:1646  */
-    {
-    NTYPE((yyvsp[-2]), n_ELSE);
-    (yyvsp[-2])->appendChild((yyvsp[0]));
-    (yyval) = (yyvsp[-2]);
-  }
-#line 4549 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 125:
-#line 977 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_DECLARATION_PARAMETER_LIST);
-  }
-#line 4557 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 126:
-#line 983 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_DECLARATION_PARAMETER);
-    (yyval)->appendChild((yyvsp[-1]));
-    (yyval)->appendChild((yyvsp[0]));
-    (yyval)->appendChild(NNEW(n_EMPTY));
-
-    (yyval) = NNEW(n_DECLARATION_PARAMETER_LIST)->appendChild((yyval));
-  }
-#line 4570 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 127:
-#line 991 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_DECLARATION_PARAMETER);
-    (yyval)->appendChild((yyvsp[-2]));
-    (yyval)->appendChild(NTYPE((yyvsp[-1]), n_VARIABLE_REFERENCE));
-      (yyvsp[-1])->appendChild((yyvsp[0]));
-    (yyval)->appendChild(NNEW(n_EMPTY));
-
-    (yyval) = NNEW(n_DECLARATION_PARAMETER_LIST)->appendChild((yyval));
-  }
-#line 4584 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 128:
-#line 1000 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_DECLARATION_PARAMETER);
-    (yyval)->appendChild((yyvsp[-4]));
-    (yyval)->appendChild(NTYPE((yyvsp[-3]), n_VARIABLE_REFERENCE));
-      (yyvsp[-3])->appendChild((yyvsp[-2]));
-    (yyval)->appendChild((yyvsp[0]));
-
-    (yyval) = NNEW(n_DECLARATION_PARAMETER_LIST)->appendChild((yyval));
-  }
-#line 4598 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 129:
-#line 1009 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_DECLARATION_PARAMETER);
-    (yyval)->appendChild((yyvsp[-3]));
-    (yyval)->appendChild((yyvsp[-2]));
-    (yyval)->appendChild((yyvsp[0]));
-
-    (yyval) = NNEW(n_DECLARATION_PARAMETER_LIST)->appendChild((yyval));
-  }
-#line 4611 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 130:
-#line 1017 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_DECLARATION_PARAMETER);
-    (yyval)->appendChild((yyvsp[-1]));
-    (yyval)->appendChild((yyvsp[0]));
-    (yyval)->appendChild(NNEW(n_EMPTY));
-
-    (yyval) = (yyvsp[-3])->appendChild((yyval));
-  }
-#line 4624 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 131:
-#line 1025 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_DECLARATION_PARAMETER);
-    (yyval)->appendChild((yyvsp[-2]));
-    (yyval)->appendChild(NTYPE((yyvsp[-1]), n_VARIABLE_REFERENCE));
-      (yyvsp[-1])->appendChild((yyvsp[0]));
-    (yyval)->appendChild(NNEW(n_EMPTY));
-
-    (yyval) = (yyvsp[-4])->appendChild((yyval));
-  }
-#line 4638 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 132:
-#line 1035 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_DECLARATION_PARAMETER);
-    (yyval)->appendChild((yyvsp[-4]));
-    (yyval)->appendChild(NTYPE((yyvsp[-3]), n_VARIABLE_REFERENCE));
-      (yyvsp[-3])->appendChild((yyvsp[-2]));
-    (yyval)->appendChild((yyvsp[0]));
-
-    (yyval) = (yyvsp[-6])->appendChild((yyval));
-  }
-#line 4652 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 133:
-#line 1045 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_DECLARATION_PARAMETER);
-    (yyval)->appendChild((yyvsp[-3]));
-    (yyval)->appendChild((yyvsp[-2]));
-    (yyval)->appendChild((yyvsp[0]));
-
-    (yyval) = (yyvsp[-5])->appendChild((yyval));
-  }
-#line 4665 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 134:
-#line 1056 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NTYPE((yyvsp[-1]), n_UNPACK);
-    (yyval)->appendChild(NTYPE((yyvsp[0]), n_VARIABLE));
-  }
-#line 4674 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 135:
-#line 1060 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NTYPE((yyvsp[0]), n_VARIABLE);
-  }
-#line 4682 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 136:
-#line 1066 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_EMPTY);
-  }
-#line 4690 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 138:
-#line 1073 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = (yyvsp[0]);
-  }
-#line 4698 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 139:
-#line 1076 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NTYPE((yyvsp[0]), n_TYPE_NAME);
-  }
-#line 4706 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 140:
-#line 1079 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NTYPE((yyvsp[0]), n_TYPE_NAME);
-  }
-#line 4714 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 141:
-#line 1085 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_EMPTY);
-  }
-#line 4722 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 142:
-#line 1088 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_DECLARATION_RETURN);
-    (yyval)->appendChild((yyvsp[-1]));
-    (yyval)->appendChild((yyvsp[0]));
-  }
-#line 4732 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 143:
-#line 1093 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_DECLARATION_RETURN);
-    (yyval)->appendChild(NNEW(n_EMPTY));
-    (yyval)->appendChild((yyvsp[0]));
-  }
-#line 4742 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 145:
-#line 1102 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_CALL_PARAMETER_LIST);
-  }
-#line 4750 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 146:
-#line 1108 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_CALL_PARAMETER_LIST)->appendChild((yyvsp[0]));
-  }
-#line 4758 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 147:
-#line 1111 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = (yyvsp[-2])->appendChild((yyvsp[0]));
-  }
-#line 4766 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 149:
-#line 1118 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_UNPACK)->appendChild((yyvsp[-1]));
-  }
-#line 4774 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 150:
-#line 1121 "parser.y" /* yacc.c:1646  */
-    {
-    NTYPE((yyvsp[-1]), n_VARIABLE_REFERENCE);
-    (yyval) = (yyvsp[-1])->appendChild((yyvsp[0]));
-  }
-#line 4783 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 151:
-#line 1128 "parser.y" /* yacc.c:1646  */
-    {
-    (yyvsp[-2])->appendChild((yyvsp[0]));
-    (yyval) = (yyvsp[-2]);
-  }
-#line 4792 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 152:
-#line 1132 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_GLOBAL_DECLARATION_LIST);
-    (yyval)->appendChild((yyvsp[0]));
-  }
-#line 4801 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 153:
-#line 1139 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NTYPE((yyvsp[0]), n_VARIABLE);
-  }
-#line 4809 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 154:
-#line 1142 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NTYPE((yyvsp[-1]), n_VARIABLE_VARIABLE);
-    (yyval)->appendChild((yyvsp[0]));
-  }
-#line 4818 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 155:
-#line 1146 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NTYPE((yyvsp[-3]), n_VARIABLE_VARIABLE);
-    (yyval)->appendChild((yyvsp[-1]));
-  }
-#line 4827 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 156:
-#line 1153 "parser.y" /* yacc.c:1646  */
-    {
-    NTYPE((yyvsp[0]), n_VARIABLE);
-    (yyval) = NNEW(n_STATIC_DECLARATION);
-    (yyval)->appendChild((yyvsp[0]));
-    (yyval)->appendChild(NNEW(n_EMPTY));
-
-    (yyval) = (yyvsp[-2])->appendChild((yyval));
-  }
-#line 4840 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 157:
-#line 1161 "parser.y" /* yacc.c:1646  */
-    {
-    NTYPE((yyvsp[-2]), n_VARIABLE);
-    (yyval) = NNEW(n_STATIC_DECLARATION);
-    (yyval)->appendChild((yyvsp[-2]));
-    (yyval)->appendChild((yyvsp[0]));
-
-    (yyval) = (yyvsp[-4])->appendChild((yyval));
-  }
-#line 4853 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 158:
-#line 1169 "parser.y" /* yacc.c:1646  */
-    {
-    NTYPE((yyvsp[0]), n_VARIABLE);
-    (yyval) = NNEW(n_STATIC_DECLARATION);
-    (yyval)->appendChild((yyvsp[0]));
-    (yyval)->appendChild(NNEW(n_EMPTY));
-
-    (yyval) = NNEW(n_STATIC_DECLARATION_LIST)->appendChild((yyval));
-  }
-#line 4866 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 159:
-#line 1177 "parser.y" /* yacc.c:1646  */
-    {
-    NTYPE((yyvsp[-2]), n_VARIABLE);
-    (yyval) = NNEW(n_STATIC_DECLARATION);
-    (yyval)->appendChild((yyvsp[-2]));
-    (yyval)->appendChild((yyvsp[0]));
-
-    (yyval) = NNEW(n_STATIC_DECLARATION_LIST)->appendChild((yyval));
-  }
-#line 4879 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 160:
-#line 1188 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = (yyvsp[-1])->appendChild((yyvsp[0]));
-  }
-#line 4887 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 161:
-#line 1191 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_STATEMENT_LIST);
-  }
-#line 4895 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 162:
-#line 1197 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_CLASS_MEMBER_DECLARATION_LIST);
-    (yyval)->appendChild((yyvsp[-2]));
-    (yyval)->appendChildren((yyvsp[-1]));
-
-    (yyval) = NNEW(n_STATEMENT)->appendChild((yyval));
-    NMORE((yyval), (yyvsp[0]));
-  }
-#line 4908 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 163:
-#line 1205 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_STATEMENT)->appendChild((yyvsp[-1]));
-    NMORE((yyval), (yyvsp[0]));
-  }
-#line 4917 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 164:
-#line 1209 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = (yyvsp[0]);
-  }
-#line 4925 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 165:
-#line 1212 "parser.y" /* yacc.c:1646  */
-    {
-    /* empty */
-  }
-#line 4933 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 166:
-#line 1214 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_METHOD_DECLARATION);
-    NMORE((yyval), (yyvsp[-8]));
-    (yyval)->appendChild((yyvsp[-9]));
-    (yyval)->appendChild((yyvsp[-6]));
-    (yyval)->appendChild(NTYPE((yyvsp[-5]), n_STRING));
-    (yyval)->appendChild(NEXPAND((yyvsp[-4]), (yyvsp[-3]), (yyvsp[-2])));
-    (yyval)->appendChild(NNEW(n_EMPTY));
-    (yyval)->appendChild((yyvsp[-1]));
-    (yyval)->appendChild((yyvsp[0]));
-
-    (yyval) = NNEW(n_STATEMENT)->appendChild((yyval));
-  }
-#line 4951 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 167:
-#line 1230 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NTYPE((yyvsp[-2]), n_TRAIT_USE);
-    (yyval)->appendChildren((yyvsp[-1]));
-    (yyval)->appendChild((yyvsp[0]));
-  }
-#line 4961 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 168:
-#line 1238 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_TRAIT_USE_LIST)->appendChild((yyvsp[0]));
-  }
-#line 4969 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 169:
-#line 1241 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = (yyvsp[-2])->appendChild((yyvsp[0]));
-  }
-#line 4977 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 170:
-#line 1247 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_EMPTY);
-  }
-#line 4985 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 171:
-#line 1250 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NEXPAND((yyvsp[-2]), (yyvsp[-1]), (yyvsp[0]));
-  }
-#line 4993 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 172:
-#line 1256 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_TRAIT_ADAPTATION_LIST);
-  }
-#line 5001 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 173:
-#line 1259 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = (yyvsp[0]);
-  }
-#line 5009 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 174:
-#line 1265 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_TRAIT_ADAPTATION_LIST);
-    (yyval)->appendChild((yyvsp[0]));
-  }
-#line 5018 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 175:
-#line 1269 "parser.y" /* yacc.c:1646  */
-    {
-    (yyvsp[-1])->appendChild((yyvsp[0]));
-    (yyval) = (yyvsp[-1]);
-  }
-#line 5027 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 176:
-#line 1276 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NMORE((yyvsp[-1]), (yyvsp[0]));
-  }
-#line 5035 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 177:
-#line 1279 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NMORE((yyvsp[-1]), (yyvsp[0]));
-  }
-#line 5043 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 178:
-#line 1285 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_TRAIT_INSTEADOF);
-    (yyval)->appendChild((yyvsp[-2]));
-    (yyval)->appendChild((yyvsp[0]));
-  }
-#line 5053 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 179:
-#line 1293 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_TRAIT_REFERENCE_LIST);
-    (yyval)->appendChild((yyvsp[0]));
-  }
-#line 5062 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 180:
-#line 1297 "parser.y" /* yacc.c:1646  */
-    {
-    (yyvsp[-2])->appendChild((yyvsp[0]));
-    (yyval) = (yyvsp[-2]);
-  }
-#line 5071 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 181:
-#line 1304 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_TRAIT_METHOD_REFERENCE);
-    (yyval)->appendChild(NTYPE((yyvsp[0]), n_STRING));
-  }
-#line 5080 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 182:
-#line 1308 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = (yyvsp[0]);
-  }
-#line 5088 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 183:
-#line 1314 "parser.y" /* yacc.c:1646  */
-    {
-    NTYPE((yyvsp[-1]), n_TRAIT_METHOD_REFERENCE);
-    NEXPAND((yyvsp[-2]), (yyvsp[-1]), NTYPE((yyvsp[0]), n_STRING));
-    (yyval) = (yyvsp[-1]);
-  }
-#line 5098 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 184:
-#line 1322 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_TRAIT_AS);
-    (yyval)->appendChild((yyvsp[-3]));
-    (yyval)->appendChild((yyvsp[-1]));
-    (yyval)->appendChild(NTYPE((yyvsp[0]), n_STRING));
-  }
-#line 5109 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 185:
-#line 1328 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_TRAIT_AS);
-    (yyval)->appendChild((yyvsp[-2]));
-    (yyval)->appendChild((yyvsp[0]));
-    (yyval)->appendChild(NNEW(n_EMPTY));
-  }
-#line 5120 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 186:
-#line 1337 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_EMPTY);
-  }
-#line 5128 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 187:
-#line 1340 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_METHOD_MODIFIER_LIST);
-    (yyval)->appendChild(NTYPE((yyvsp[0]), n_STRING));
-  }
-#line 5137 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 188:
-#line 1348 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_EMPTY);
-  }
-#line 5145 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 189:
-#line 1351 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NEXPAND((yyvsp[-2]), (yyvsp[-1]), (yyvsp[0]));
-  }
-#line 5153 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 191:
-#line 1358 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_CLASS_MEMBER_MODIFIER_LIST);
-    (yyval)->appendChild(NTYPE((yyvsp[0]), n_STRING));
-  }
-#line 5162 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 192:
-#line 1365 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_METHOD_MODIFIER_LIST);
-  }
-#line 5170 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 193:
-#line 1368 "parser.y" /* yacc.c:1646  */
-    {
-    NTYPE((yyvsp[0]), n_METHOD_MODIFIER_LIST);
-    (yyval) = (yyvsp[0]);
-  }
-#line 5179 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 194:
-#line 1375 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_CLASS_MEMBER_MODIFIER_LIST);
-    (yyval)->appendChild(NTYPE((yyvsp[0]), n_STRING));
-  }
-#line 5188 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 195:
-#line 1379 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = (yyvsp[-1])->appendChild(NTYPE((yyvsp[0]), n_STRING));
-  }
-#line 5196 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 202:
-#line 1394 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_CLASS_MEMBER_DECLARATION);
-    (yyval)->appendChild(NTYPE((yyvsp[0]), n_VARIABLE));
-    (yyval)->appendChild(NNEW(n_EMPTY));
-
-    (yyval) = (yyvsp[-2])->appendChild((yyval));
-  }
-#line 5208 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 203:
-#line 1401 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_CLASS_MEMBER_DECLARATION);
-    (yyval)->appendChild(NTYPE((yyvsp[-2]), n_VARIABLE));
-    (yyval)->appendChild((yyvsp[0]));
-
-    (yyval) = (yyvsp[-4])->appendChild((yyval));
-  }
-#line 5220 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 204:
-#line 1408 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_CLASS_MEMBER_DECLARATION);
-    (yyval)->appendChild(NTYPE((yyvsp[0]), n_VARIABLE));
-    (yyval)->appendChild(NNEW(n_EMPTY));
-
-    (yyval) = NNEW(n_CLASS_MEMBER_DECLARATION_LIST)->appendChild((yyval));
-  }
-#line 5232 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 205:
-#line 1415 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_CLASS_MEMBER_DECLARATION);
-    (yyval)->appendChild(NTYPE((yyvsp[-2]), n_VARIABLE));
-    (yyval)->appendChild((yyvsp[0]));
-
-    (yyval) = NNEW(n_CLASS_MEMBER_DECLARATION_LIST)->appendChild((yyval));
-  }
-#line 5244 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 206:
-#line 1425 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_CLASS_CONSTANT_DECLARATION);
-    (yyval)->appendChild(NTYPE((yyvsp[-2]), n_STRING));
-    (yyval)->appendChild((yyvsp[0]));
-
-    (yyvsp[-4])->appendChild((yyval));
-
-    (yyval) = (yyvsp[-4]);
-  }
-#line 5258 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 207:
-#line 1434 "parser.y" /* yacc.c:1646  */
-    {
-    NTYPE((yyvsp[-3]), n_CLASS_CONSTANT_DECLARATION_LIST);
-    (yyval) = NNEW(n_CLASS_CONSTANT_DECLARATION);
-    (yyval)->appendChild(NTYPE((yyvsp[-2]), n_STRING));
-    (yyval)->appendChild((yyvsp[0]));
-    (yyvsp[-3])->appendChild((yyval));
-
-    (yyval) = (yyvsp[-3]);
-  }
-#line 5272 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 208:
-#line 1446 "parser.y" /* yacc.c:1646  */
-    {
-    (yyvsp[-2])->appendChild((yyvsp[0]));
-  }
-#line 5280 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 209:
-#line 1449 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_ECHO_LIST);
-    (yyval)->appendChild((yyvsp[0]));
-  }
-#line 5289 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 210:
-#line 1456 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_EMPTY);
-  }
-#line 5297 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 212:
-#line 1464 "parser.y" /* yacc.c:1646  */
-    {
-    (yyvsp[-2])->appendChild((yyvsp[0]));
-  }
-#line 5305 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 213:
-#line 1467 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_EXPRESSION_LIST);
-    (yyval)->appendChild((yyvsp[0]));
-  }
-#line 5314 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 214:
-#line 1474 "parser.y" /* yacc.c:1646  */
-    {
-    NTYPE((yyvsp[-5]), n_LIST);
-    (yyvsp[-5])->appendChild(NEXPAND((yyvsp[-4]), (yyvsp[-3]), (yyvsp[-2])));
-    (yyval) = NNEW(n_BINARY_EXPRESSION);
-    (yyval)->appendChild((yyvsp[-5]));
-    (yyval)->appendChild(NTYPE((yyvsp[-1]), n_OPERATOR));
-    (yyval)->appendChild((yyvsp[0]));
-  }
-#line 5327 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 215:
-#line 1482 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_BINARY_EXPRESSION);
-    (yyval)->appendChild((yyvsp[-2]));
-    (yyval)->appendChild(NTYPE((yyvsp[-1]), n_OPERATOR));
-    (yyval)->appendChild((yyvsp[0]));
-  }
-#line 5338 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 216:
-#line 1488 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_BINARY_EXPRESSION);
-    (yyval)->appendChild((yyvsp[-3]));
-    (yyval)->appendChild(NTYPE((yyvsp[-2]), n_OPERATOR));
-
-    NTYPE((yyvsp[-1]), n_VARIABLE_REFERENCE);
-    (yyvsp[-1])->appendChild((yyvsp[0]));
-
-    (yyval)->appendChild((yyvsp[-1]));
-  }
-#line 5353 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 217:
-#line 1498 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_BINARY_EXPRESSION);
-    (yyval)->appendChild((yyvsp[-5]));
-    (yyval)->appendChild(NTYPE((yyvsp[-4]), n_OPERATOR));
-
-    NTYPE((yyvsp[-2]), n_NEW);
-    (yyvsp[-2])->appendChild((yyvsp[-1]));
-    (yyvsp[-2])->appendChild((yyvsp[0]));
-
-    NTYPE((yyvsp[-3]), n_VARIABLE_REFERENCE);
-    (yyvsp[-3])->appendChild((yyvsp[-2]));
-
-    (yyval)->appendChild((yyvsp[-3]));
-  }
-#line 5372 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 218:
-#line 1512 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_UNARY_PREFIX_EXPRESSION);
-    (yyval)->appendChild(NTYPE((yyvsp[-1]), n_OPERATOR));
-    (yyval)->appendChild((yyvsp[0]));
-  }
-#line 5382 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 219:
-#line 1517 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_BINARY_EXPRESSION);
-    (yyval)->appendChild((yyvsp[-2]));
-    (yyval)->appendChild(NTYPE((yyvsp[-1]), n_OPERATOR));
-    (yyval)->appendChild((yyvsp[0]));
-  }
-#line 5393 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 220:
-#line 1523 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_BINARY_EXPRESSION);
-    (yyval)->appendChild((yyvsp[-2]));
-    (yyval)->appendChild(NTYPE((yyvsp[-1]), n_OPERATOR));
-    (yyval)->appendChild((yyvsp[0]));
-  }
-#line 5404 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 221:
-#line 1529 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_BINARY_EXPRESSION);
-    (yyval)->appendChild((yyvsp[-2]));
-    (yyval)->appendChild(NTYPE((yyvsp[-1]), n_OPERATOR));
-    (yyval)->appendChild((yyvsp[0]));
-  }
-#line 5415 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 222:
-#line 1535 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_BINARY_EXPRESSION);
-    (yyval)->appendChild((yyvsp[-2]));
-    (yyval)->appendChild(NTYPE((yyvsp[-1]), n_OPERATOR));
-    (yyval)->appendChild((yyvsp[0]));
-  }
-#line 5426 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 223:
-#line 1541 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_BINARY_EXPRESSION);
-    (yyval)->appendChild((yyvsp[-2]));
-    (yyval)->appendChild(NTYPE((yyvsp[-1]), n_OPERATOR));
-    (yyval)->appendChild((yyvsp[0]));
-  }
-#line 5437 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 224:
-#line 1547 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_BINARY_EXPRESSION);
-    (yyval)->appendChild((yyvsp[-2]));
-    (yyval)->appendChild(NTYPE((yyvsp[-1]), n_OPERATOR));
-    (yyval)->appendChild((yyvsp[0]));
-  }
-#line 5448 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 225:
-#line 1553 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_BINARY_EXPRESSION);
-    (yyval)->appendChild((yyvsp[-2]));
-    (yyval)->appendChild(NTYPE((yyvsp[-1]), n_OPERATOR));
-    (yyval)->appendChild((yyvsp[0]));
-  }
-#line 5459 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 226:
-#line 1559 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_BINARY_EXPRESSION);
-    (yyval)->appendChild((yyvsp[-2]));
-    (yyval)->appendChild(NTYPE((yyvsp[-1]), n_OPERATOR));
-    (yyval)->appendChild((yyvsp[0]));
-  }
-#line 5470 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 227:
-#line 1565 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_BINARY_EXPRESSION);
-    (yyval)->appendChild((yyvsp[-2]));
-    (yyval)->appendChild(NTYPE((yyvsp[-1]), n_OPERATOR));
-    (yyval)->appendChild((yyvsp[0]));
-  }
-#line 5481 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 228:
-#line 1571 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_BINARY_EXPRESSION);
-    (yyval)->appendChild((yyvsp[-2]));
-    (yyval)->appendChild(NTYPE((yyvsp[-1]), n_OPERATOR));
-    (yyval)->appendChild((yyvsp[0]));
-  }
-#line 5492 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 229:
-#line 1577 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_BINARY_EXPRESSION);
-    (yyval)->appendChild((yyvsp[-2]));
-    (yyval)->appendChild(NTYPE((yyvsp[-1]), n_OPERATOR));
-    (yyval)->appendChild((yyvsp[0]));
-  }
-#line 5503 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 230:
-#line 1583 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_UNARY_POSTFIX_EXPRESSION);
-    (yyval)->appendChild((yyvsp[-1]));
-    (yyval)->appendChild(NTYPE((yyvsp[0]), n_OPERATOR));
-  }
-#line 5513 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 231:
-#line 1588 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_UNARY_PREFIX_EXPRESSION);
-    (yyval)->appendChild(NTYPE((yyvsp[-1]), n_OPERATOR));
-    (yyval)->appendChild((yyvsp[0]));
-  }
-#line 5523 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 232:
-#line 1593 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_UNARY_POSTFIX_EXPRESSION);
-    (yyval)->appendChild((yyvsp[-1]));
-    (yyval)->appendChild(NTYPE((yyvsp[0]), n_OPERATOR));
-  }
-#line 5533 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 233:
-#line 1598 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_UNARY_PREFIX_EXPRESSION);
-    (yyval)->appendChild(NTYPE((yyvsp[-1]), n_OPERATOR));
-    (yyval)->appendChild((yyvsp[0]));
-  }
-#line 5543 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 234:
-#line 1603 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_BINARY_EXPRESSION);
-    (yyval)->appendChild((yyvsp[-2]));
-    (yyval)->appendChild(NTYPE((yyvsp[-1]), n_OPERATOR));
-    (yyval)->appendChild((yyvsp[0]));
-  }
-#line 5554 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 235:
-#line 1609 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_BINARY_EXPRESSION);
-    (yyval)->appendChild((yyvsp[-2]));
-    (yyval)->appendChild(NTYPE((yyvsp[-1]), n_OPERATOR));
-    (yyval)->appendChild((yyvsp[0]));
-  }
-#line 5565 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 236:
-#line 1615 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_BINARY_EXPRESSION);
-    (yyval)->appendChild((yyvsp[-2]));
-    (yyval)->appendChild(NTYPE((yyvsp[-1]), n_OPERATOR));
-    (yyval)->appendChild((yyvsp[0]));
-  }
-#line 5576 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 237:
-#line 1621 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_BINARY_EXPRESSION);
-    (yyval)->appendChild((yyvsp[-2]));
-    (yyval)->appendChild(NTYPE((yyvsp[-1]), n_OPERATOR));
-    (yyval)->appendChild((yyvsp[0]));
-  }
-#line 5587 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 238:
-#line 1627 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_BINARY_EXPRESSION);
-    (yyval)->appendChild((yyvsp[-2]));
-    (yyval)->appendChild(NTYPE((yyvsp[-1]), n_OPERATOR));
-    (yyval)->appendChild((yyvsp[0]));
-  }
-#line 5598 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 239:
-#line 1633 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_BINARY_EXPRESSION);
-    (yyval)->appendChild((yyvsp[-2]));
-    (yyval)->appendChild(NTYPE((yyvsp[-1]), n_OPERATOR));
-    (yyval)->appendChild((yyvsp[0]));
-  }
-#line 5609 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 240:
-#line 1639 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_BINARY_EXPRESSION);
-    (yyval)->appendChild((yyvsp[-2]));
-    (yyval)->appendChild(NTYPE((yyvsp[-1]), n_OPERATOR));
-    (yyval)->appendChild((yyvsp[0]));
-  }
-#line 5620 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 241:
-#line 1645 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_BINARY_EXPRESSION);
-    (yyval)->appendChild((yyvsp[-2]));
-    (yyval)->appendChild(NTYPE((yyvsp[-1]), n_OPERATOR));
-    (yyval)->appendChild((yyvsp[0]));
-  }
-#line 5631 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 242:
-#line 1651 "parser.y" /* yacc.c:1646  */
-    {
-
-    /* The concatenation operator generates n_CONCATENATION_LIST instead of
-       n_BINARY_EXPRESSION because we tend to run into stack depth issues in a
-       lot of real-world cases otherwise (e.g., in PHP and JSON decoders). */
-
-    if ((yyvsp[-2])->type == n_CONCATENATION_LIST && (yyvsp[0])->type == n_CONCATENATION_LIST) {
-      (yyvsp[-2])->appendChild(NTYPE((yyvsp[-1]), n_OPERATOR));
-      (yyvsp[-2])->appendChildren((yyvsp[0]));
-      (yyval) = (yyvsp[-2]);
-    } else if ((yyvsp[-2])->type == n_CONCATENATION_LIST) {
-      (yyvsp[-2])->appendChild(NTYPE((yyvsp[-1]), n_OPERATOR));
-      (yyvsp[-2])->appendChild((yyvsp[0]));
-      (yyval) = (yyvsp[-2]);
-    } else if ((yyvsp[0])->type == n_CONCATENATION_LIST) {
-      (yyval) = NNEW(n_CONCATENATION_LIST);
-      (yyval)->appendChild((yyvsp[-2]));
-      (yyval)->appendChild(NTYPE((yyvsp[-1]), n_OPERATOR));
-      (yyval)->appendChildren((yyvsp[0]));
-    } else {
-      (yyval) = NNEW(n_CONCATENATION_LIST);
-      (yyval)->appendChild((yyvsp[-2]));
-      (yyval)->appendChild(NTYPE((yyvsp[-1]), n_OPERATOR));
-      (yyval)->appendChild((yyvsp[0]));
-    }
-  }
-#line 5662 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 243:
-#line 1677 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_BINARY_EXPRESSION);
-    (yyval)->appendChild((yyvsp[-2]));
-    (yyval)->appendChild(NTYPE((yyvsp[-1]), n_OPERATOR));
-    (yyval)->appendChild((yyvsp[0]));
-  }
-#line 5673 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 244:
-#line 1683 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_BINARY_EXPRESSION);
-    (yyval)->appendChild((yyvsp[-2]));
-    (yyval)->appendChild(NTYPE((yyvsp[-1]), n_OPERATOR));
-    (yyval)->appendChild((yyvsp[0]));
-  }
-#line 5684 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 245:
-#line 1689 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_BINARY_EXPRESSION);
-    (yyval)->appendChild((yyvsp[-2]));
-    (yyval)->appendChild(NTYPE((yyvsp[-1]), n_OPERATOR));
-    (yyval)->appendChild((yyvsp[0]));
-  }
-#line 5695 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 246:
-#line 1695 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_BINARY_EXPRESSION);
-    (yyval)->appendChild((yyvsp[-2]));
-    (yyval)->appendChild(NTYPE((yyvsp[-1]), n_OPERATOR));
-    (yyval)->appendChild((yyvsp[0]));
-  }
-#line 5706 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 247:
-#line 1701 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_BINARY_EXPRESSION);
-    (yyval)->appendChild((yyvsp[-2]));
-    (yyval)->appendChild(NTYPE((yyvsp[-1]), n_OPERATOR));
-    (yyval)->appendChild((yyvsp[0]));
-  }
-#line 5717 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 248:
-#line 1707 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_BINARY_EXPRESSION);
-    (yyval)->appendChild((yyvsp[-2]));
-    (yyval)->appendChild(NTYPE((yyvsp[-1]), n_OPERATOR));
-    (yyval)->appendChild((yyvsp[0]));
-  }
-#line 5728 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 249:
-#line 1713 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_BINARY_EXPRESSION);
-    (yyval)->appendChild((yyvsp[-2]));
-    (yyval)->appendChild(NTYPE((yyvsp[-1]), n_OPERATOR));
-    (yyval)->appendChild((yyvsp[0]));
-  }
-#line 5739 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 250:
-#line 1719 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_UNARY_PREFIX_EXPRESSION);
-    (yyval)->appendChild(NTYPE((yyvsp[-1]), n_OPERATOR));
-    (yyval)->appendChild((yyvsp[0]));
-  }
-#line 5749 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 251:
-#line 1724 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_UNARY_PREFIX_EXPRESSION);
-    (yyval)->appendChild(NTYPE((yyvsp[-1]), n_OPERATOR));
-    (yyval)->appendChild((yyvsp[0]));
-  }
-#line 5759 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 252:
-#line 1729 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_UNARY_PREFIX_EXPRESSION);
-    (yyval)->appendChild(NTYPE((yyvsp[-1]), n_OPERATOR));
-    (yyval)->appendChild((yyvsp[0]));
-  }
-#line 5769 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 253:
-#line 1734 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_UNARY_PREFIX_EXPRESSION);
-    (yyval)->appendChild(NTYPE((yyvsp[-1]), n_OPERATOR));
-    (yyval)->appendChild((yyvsp[0]));
-  }
-#line 5779 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 254:
-#line 1739 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_BINARY_EXPRESSION);
-    (yyval)->appendChild((yyvsp[-2]));
-    (yyval)->appendChild(NTYPE((yyvsp[-1]), n_OPERATOR));
-    (yyval)->appendChild((yyvsp[0]));
-  }
-#line 5790 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 255:
-#line 1745 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_BINARY_EXPRESSION);
-    (yyval)->appendChild((yyvsp[-2]));
-    (yyval)->appendChild(NTYPE((yyvsp[-1]), n_OPERATOR));
-    (yyval)->appendChild((yyvsp[0]));
-  }
-#line 5801 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 256:
-#line 1751 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_BINARY_EXPRESSION);
-    (yyval)->appendChild((yyvsp[-2]));
-    (yyval)->appendChild(NTYPE((yyvsp[-1]), n_OPERATOR));
-    (yyval)->appendChild((yyvsp[0]));
-  }
-#line 5812 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 257:
-#line 1757 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_BINARY_EXPRESSION);
-    (yyval)->appendChild((yyvsp[-2]));
-    (yyval)->appendChild(NTYPE((yyvsp[-1]), n_OPERATOR));
-    (yyval)->appendChild((yyvsp[0]));
-  }
-#line 5823 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 258:
-#line 1763 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_BINARY_EXPRESSION);
-    (yyval)->appendChild((yyvsp[-2]));
-    (yyval)->appendChild(NTYPE((yyvsp[-1]), n_OPERATOR));
-    (yyval)->appendChild((yyvsp[0]));
-  }
-#line 5834 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 259:
-#line 1769 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_BINARY_EXPRESSION);
-    (yyval)->appendChild((yyvsp[-2]));
-    (yyval)->appendChild(NTYPE((yyvsp[-1]), n_OPERATOR));
-    (yyval)->appendChild((yyvsp[0]));
-  }
-#line 5845 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 260:
-#line 1775 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_BINARY_EXPRESSION);
-    (yyval)->appendChild((yyvsp[-2]));
-    (yyval)->appendChild(NTYPE((yyvsp[-1]), n_OPERATOR));
-    (yyval)->appendChild((yyvsp[0]));
-  }
-#line 5856 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 261:
-#line 1781 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_BINARY_EXPRESSION);
-    (yyval)->appendChild((yyvsp[-2]));
-    (yyval)->appendChild(NTYPE((yyvsp[-1]), n_OPERATOR));
-    (yyval)->appendChild((yyvsp[0]));
-  }
-#line 5867 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 262:
-#line 1787 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_BINARY_EXPRESSION);
-    (yyval)->appendChild((yyvsp[-2]));
-    (yyval)->appendChild(NTYPE((yyvsp[-1]), n_OPERATOR));
-    (yyval)->appendChild((yyvsp[0]));
-  }
-#line 5878 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 263:
-#line 1793 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_BINARY_EXPRESSION);
-    (yyval)->appendChild((yyvsp[-2]));
-    (yyval)->appendChild(NTYPE((yyvsp[-1]), n_OPERATOR));
-    (yyval)->appendChild((yyvsp[0]));
-  }
-#line 5889 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 266:
-#line 1801 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_TERNARY_EXPRESSION);
-    (yyval)->appendChild((yyvsp[-4]));
-    (yyval)->appendChild(NTYPE((yyvsp[-3]), n_OPERATOR));
-    (yyval)->appendChild((yyvsp[-2]));
-    (yyval)->appendChild(NTYPE((yyvsp[-1]), n_OPERATOR));
-    (yyval)->appendChild((yyvsp[0]));
-  }
-#line 5902 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 267:
-#line 1809 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_TERNARY_EXPRESSION);
-    (yyval)->appendChild((yyvsp[-3]));
-    (yyval)->appendChild(NTYPE((yyvsp[-2]), n_OPERATOR));
-    (yyval)->appendChild(NNEW(n_EMPTY));
-    (yyval)->appendChild(NTYPE((yyvsp[-1]), n_OPERATOR));
-    (yyval)->appendChild((yyvsp[0]));
-  }
-#line 5915 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 268:
-#line 1817 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_BINARY_EXPRESSION);
-    (yyval)->appendChild((yyvsp[-2]));
-    (yyval)->appendChild(NTYPE((yyvsp[-1]), n_OPERATOR));
-    (yyval)->appendChild((yyvsp[0]));
-  }
-#line 5926 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 270:
-#line 1824 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_CAST_EXPRESSION);
-    (yyval)->appendChild(NTYPE((yyvsp[-1]), n_CAST));
-    (yyval)->appendChild((yyvsp[0]));
-  }
-#line 5936 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 271:
-#line 1829 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_CAST_EXPRESSION);
-    (yyval)->appendChild(NTYPE((yyvsp[-1]), n_CAST));
-    (yyval)->appendChild((yyvsp[0]));
-  }
-#line 5946 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 272:
-#line 1834 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_CAST_EXPRESSION);
-    (yyval)->appendChild(NTYPE((yyvsp[-1]), n_CAST));
-    (yyval)->appendChild((yyvsp[0]));
-  }
-#line 5956 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 273:
-#line 1839 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_CAST_EXPRESSION);
-    (yyval)->appendChild(NTYPE((yyvsp[-1]), n_CAST));
-    (yyval)->appendChild((yyvsp[0]));
-  }
-#line 5966 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 274:
-#line 1844 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_CAST_EXPRESSION);
-    (yyval)->appendChild(NTYPE((yyvsp[-1]), n_CAST));
-    (yyval)->appendChild((yyvsp[0]));
-  }
-#line 5976 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 275:
-#line 1849 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_CAST_EXPRESSION);
-    (yyval)->appendChild(NTYPE((yyvsp[-1]), n_CAST));
-    (yyval)->appendChild((yyvsp[0]));
-  }
-#line 5986 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 276:
-#line 1854 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_CAST_EXPRESSION);
-    (yyval)->appendChild(NTYPE((yyvsp[-1]), n_CAST));
-    (yyval)->appendChild((yyvsp[0]));
-  }
-#line 5996 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 277:
-#line 1859 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_UNARY_PREFIX_EXPRESSION);
-    (yyval)->appendChild(NTYPE((yyvsp[-1]), n_OPERATOR));
-    (yyval)->appendChild((yyvsp[0]));
-  }
-#line 6006 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 278:
-#line 1864 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_UNARY_PREFIX_EXPRESSION);
-    (yyval)->appendChild(NTYPE((yyvsp[-1]), n_OPERATOR));
-    (yyval)->appendChild((yyvsp[0]));
-  }
-#line 6016 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 279:
-#line 1869 "parser.y" /* yacc.c:1646  */
-    {
-    NTYPE((yyvsp[0]), n_BACKTICKS_EXPRESSION);
-    (yyval) = (yyvsp[0]);
-  }
-#line 6025 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 283:
-#line 1876 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_UNARY_PREFIX_EXPRESSION);
-    (yyval)->appendChild(NTYPE((yyvsp[-1]), n_OPERATOR));
-    (yyval)->appendChild((yyvsp[0]));
-  }
-#line 6035 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 284:
-#line 1881 "parser.y" /* yacc.c:1646  */
-    {
-    NTYPE((yyvsp[0]), n_YIELD);
-    (yyvsp[0])->appendChild(NNEW(n_EMPTY));
-    (yyvsp[0])->appendChild(NNEW(n_EMPTY));
-    (yyval) = (yyvsp[0]);
-  }
-#line 6046 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 285:
-#line 1890 "parser.y" /* yacc.c:1646  */
-    {
-    NSPAN((yyvsp[-9]), n_FUNCTION_DECLARATION, (yyvsp[-1]));
-    (yyvsp[-9])->appendChild(NNEW(n_EMPTY));
-    (yyvsp[-9])->appendChild((yyvsp[-8]));
-    (yyvsp[-9])->appendChild(NNEW(n_EMPTY));
-    (yyvsp[-9])->appendChild(NEXPAND((yyvsp[-7]), (yyvsp[-6]), (yyvsp[-5])));
-    (yyvsp[-9])->appendChild((yyvsp[-4]));
-    (yyvsp[-9])->appendChild((yyvsp[-3]));
-    (yyvsp[-9])->appendChild(NEXPAND((yyvsp[-2]), (yyvsp[-1]), (yyvsp[0])));
-
-    (yyval) = (yyvsp[-9]);
-  }
-#line 6063 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 286:
-#line 1905 "parser.y" /* yacc.c:1646  */
-    {
-    NSPAN((yyvsp[-9]), n_FUNCTION_DECLARATION, (yyvsp[-1]));
-    NMORE((yyvsp[-9]), (yyvsp[-10]));
-
-    (yyval) = NNEW(n_FUNCTION_MODIFIER_LIST);
-    (yyval)->appendChild(NTYPE((yyvsp[-10]), n_STRING));
-    (yyvsp[-9])->appendChild((yyvsp[-10]));
-
-    (yyvsp[-9])->appendChild(NNEW(n_EMPTY));
-    (yyvsp[-9])->appendChild((yyvsp[-8]));
-    (yyvsp[-9])->appendChild(NNEW(n_EMPTY));
-    (yyvsp[-9])->appendChild(NEXPAND((yyvsp[-7]), (yyvsp[-6]), (yyvsp[-5])));
-    (yyvsp[-9])->appendChild((yyvsp[-4]));
-    (yyvsp[-9])->appendChild((yyvsp[-3]));
-    (yyvsp[-9])->appendChild(NEXPAND((yyvsp[-2]), (yyvsp[-1]), (yyvsp[0])));
-
-    (yyval) = (yyvsp[-9]);
-  }
-#line 6086 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 287:
-#line 1926 "parser.y" /* yacc.c:1646  */
-    {
-    NTYPE((yyvsp[-1]), n_YIELD);
-    (yyvsp[0])->appendChild(NNEW(n_EMPTY));
-    (yyvsp[-1])->appendChild((yyvsp[0]));
-    (yyval) = (yyvsp[-1]);
-  }
-#line 6097 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 288:
-#line 1932 "parser.y" /* yacc.c:1646  */
-    {
-    NTYPE((yyvsp[-1]), n_YIELD);
-    (yyvsp[0])->appendChild(NNEW(n_EMPTY));
-    (yyvsp[-1])->appendChild((yyvsp[0]));
-    (yyval) = (yyvsp[-1]);
-  }
-#line 6108 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 289:
-#line 1938 "parser.y" /* yacc.c:1646  */
-    {
-    NTYPE((yyvsp[-3]), n_YIELD);
-    (yyvsp[-3])->appendChild((yyvsp[-2]));
-    (yyvsp[-3])->appendChild((yyvsp[0]));
-    (yyval) = (yyvsp[-3]);
-  }
-#line 6119 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 290:
-#line 1944 "parser.y" /* yacc.c:1646  */
-    {
-    NTYPE((yyvsp[-3]), n_YIELD);
-    (yyvsp[-3])->appendChild((yyvsp[-2]));
-    (yyvsp[-3])->appendChild((yyvsp[0]));
-    (yyval) = (yyvsp[-3]);
-  }
-#line 6130 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 292:
-#line 1957 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_EMPTY);
-  }
-#line 6138 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 293:
-#line 1960 "parser.y" /* yacc.c:1646  */
-    {
-    NTYPE((yyvsp[-3]), n_LEXICAL_VARIABLE_LIST);
-    (yyvsp[-3])->appendChildren((yyvsp[-1]));
-    (yyval) = (yyvsp[-3]);
-  }
-#line 6148 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 294:
-#line 1968 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = (yyvsp[-2])->appendChild(NTYPE((yyvsp[0]), n_VARIABLE));
-  }
-#line 6156 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 295:
-#line 1971 "parser.y" /* yacc.c:1646  */
-    {
-    NTYPE((yyvsp[-1]), n_VARIABLE_REFERENCE);
-    (yyvsp[-1])->appendChild(NTYPE((yyvsp[0]), n_VARIABLE));
-    (yyval) = (yyvsp[-3])->appendChild((yyvsp[-1]));
-  }
-#line 6166 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 296:
-#line 1976 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_LEXICAL_VARIABLE_LIST);
-    (yyval)->appendChild(NTYPE((yyvsp[0]), n_VARIABLE));
-  }
-#line 6175 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 297:
-#line 1980 "parser.y" /* yacc.c:1646  */
-    {
-    NTYPE((yyvsp[-1]), n_VARIABLE_REFERENCE);
-    (yyvsp[-1])->appendChild(NTYPE((yyvsp[0]), n_VARIABLE));
-    (yyval) = NNEW(n_LEXICAL_VARIABLE_LIST);
-    (yyval)->appendChild((yyvsp[-1]));
-  }
-#line 6186 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 298:
-#line 1989 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_FUNCTION_CALL);
-    (yyval)->appendChild((yyvsp[-3]));
-    (yyval)->appendChild(NEXPAND((yyvsp[-2]), (yyvsp[-1]), (yyvsp[0])));
-  }
-#line 6196 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 299:
-#line 1995 "parser.y" /* yacc.c:1646  */
-    {
-    NMORE((yyvsp[-3]), (yyvsp[-5]));
-    (yyval) = NNEW(n_FUNCTION_CALL);
-    (yyval)->appendChild((yyvsp[-3]));
-    (yyval)->appendChild(NEXPAND((yyvsp[-2]), (yyvsp[-1]), (yyvsp[0])));
-  }
-#line 6207 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 300:
-#line 2001 "parser.y" /* yacc.c:1646  */
-    {
-    NMORE((yyvsp[-3]), (yyvsp[-4]));
-    (yyval) = NNEW(n_FUNCTION_CALL);
-    (yyval)->appendChild((yyvsp[-3]));
-    (yyval)->appendChild(NEXPAND((yyvsp[-2]), (yyvsp[-1]), (yyvsp[0])));
-  }
-#line 6218 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 301:
-#line 2008 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_CLASS_STATIC_ACCESS);
-    (yyval)->appendChild((yyvsp[-5]));
-    (yyval)->appendChild(NTYPE((yyvsp[-3]), n_STRING));
-
-    (yyval) = NNEW(n_FUNCTION_CALL)->appendChild((yyval));
-    (yyval)->appendChild(NEXPAND((yyvsp[-2]), (yyvsp[-1]), (yyvsp[0])));
-  }
-#line 6231 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 302:
-#line 2017 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_CLASS_STATIC_ACCESS);
-    (yyval)->appendChild((yyvsp[-5]));
-    (yyval)->appendChild(NTYPE((yyvsp[-3]), n_STRING));
-
-    (yyval) = NNEW(n_FUNCTION_CALL)->appendChild((yyval));
-    (yyval)->appendChild(NEXPAND((yyvsp[-2]), (yyvsp[-1]), (yyvsp[0])));
-  }
-#line 6244 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 303:
-#line 2026 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_CLASS_STATIC_ACCESS);
-    (yyval)->appendChild((yyvsp[-5]));
-    (yyval)->appendChild(NTYPE((yyvsp[-3]), n_STRING));
-
-    (yyval) = NNEW(n_FUNCTION_CALL)->appendChild((yyval));
-    (yyval)->appendChild(NEXPAND((yyvsp[-2]), (yyvsp[-1]), (yyvsp[0])));
-  }
-#line 6257 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 304:
-#line 2035 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_CLASS_STATIC_ACCESS);
-    (yyval)->appendChild((yyvsp[-5]));
-    (yyval)->appendChild(NTYPE((yyvsp[-3]), n_STRING));
-
-    (yyval) = NNEW(n_FUNCTION_CALL)->appendChild((yyval));
-    (yyval)->appendChild(NEXPAND((yyvsp[-2]), (yyvsp[-1]), (yyvsp[0])));
-  }
-#line 6270 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 305:
-#line 2043 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_FUNCTION_CALL);
-    (yyval)->appendChild((yyvsp[-3]));
-    (yyval)->appendChild(NEXPAND((yyvsp[-2]), (yyvsp[-1]), (yyvsp[0])));
-  }
-#line 6280 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 306:
-#line 2051 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NTYPE((yyvsp[0]), n_CLASS_NAME);
-  }
-#line 6288 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 307:
-#line 2054 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NTYPE((yyvsp[0]), n_CLASS_NAME);
-  }
-#line 6296 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 308:
-#line 2057 "parser.y" /* yacc.c:1646  */
-    {
-    NMORE((yyvsp[0]), (yyvsp[-2]));
-    (yyval) = NTYPE((yyvsp[0]), n_CLASS_NAME);
-  }
-#line 6305 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 309:
-#line 2061 "parser.y" /* yacc.c:1646  */
-    {
-    NMORE((yyvsp[0]), (yyvsp[-1]));
-    (yyval) = NTYPE((yyvsp[0]), n_CLASS_NAME);
-  }
-#line 6314 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 310:
-#line 2068 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NTYPE((yyvsp[0]), n_CLASS_NAME);
-  }
-#line 6322 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 311:
-#line 2071 "parser.y" /* yacc.c:1646  */
-    {
-    NMORE((yyvsp[0]), (yyvsp[-2]));
-    (yyval) = NTYPE((yyvsp[0]), n_CLASS_NAME);
-  }
-#line 6331 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 312:
-#line 2075 "parser.y" /* yacc.c:1646  */
-    {
-    NMORE((yyvsp[0]), (yyvsp[-1]));
-    (yyval) = NTYPE((yyvsp[0]), n_CLASS_NAME);
-  }
-#line 6340 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 315:
-#line 2090 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_OBJECT_PROPERTY_ACCESS);
-    (yyval)->appendChild((yyvsp[-3]));
-    (yyval)->appendChild((yyvsp[-1]));
-    for (xhpast::node_list_t::iterator ii = (yyvsp[0])->children.begin();
-      ii != (yyvsp[0])->children.end();
-      ++ii) {
-
-      (yyval) = NNEW(n_OBJECT_PROPERTY_ACCESS)->appendChild((yyval));
-      (yyval)->appendChild(*ii);
-    }
-  }
-#line 6357 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 317:
-#line 2106 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = (yyvsp[-1])->appendChild((yyvsp[0]));
-  }
-#line 6365 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 318:
-#line 2109 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_EMPTY);
-  }
-#line 6373 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 319:
-#line 2115 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = (yyvsp[0]);
-  }
-#line 6381 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 320:
-#line 2121 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_EMPTY);
-  }
-#line 6389 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 321:
-#line 2124 "parser.y" /* yacc.c:1646  */
-    {
-    NSPAN((yyvsp[-1]), n_EMPTY, (yyvsp[0]));
-    (yyval) = (yyvsp[-1]);
-  }
-#line 6398 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 322:
-#line 2128 "parser.y" /* yacc.c:1646  */
-    {
-    NSPAN((yyvsp[-2]), n_PARENTHETICAL_EXPRESSION, (yyvsp[0]));
-    (yyvsp[-2])->appendChild((yyvsp[-1]));
-    (yyval) = (yyvsp[-2]);
-  }
-#line 6408 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 323:
-#line 2136 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_EMPTY);
-  }
-#line 6416 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 324:
-#line 2139 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NEXPAND((yyvsp[-2]), (yyvsp[-1]), (yyvsp[0]));
-  }
-#line 6424 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 325:
-#line 2145 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NTYPE((yyvsp[0]), n_NUMERIC_SCALAR);
-  }
-#line 6432 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 326:
-#line 2148 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NTYPE((yyvsp[0]), n_NUMERIC_SCALAR);
-  }
-#line 6440 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 327:
-#line 2151 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NTYPE((yyvsp[0]), n_STRING_SCALAR);
-  }
-#line 6448 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 328:
-#line 2154 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NTYPE((yyvsp[0]), n_MAGIC_SCALAR);
-  }
-#line 6456 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 329:
-#line 2157 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NTYPE((yyvsp[0]), n_MAGIC_SCALAR);
-  }
-#line 6464 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 330:
-#line 2160 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NTYPE((yyvsp[0]), n_MAGIC_SCALAR);
-  }
-#line 6472 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 331:
-#line 2163 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NTYPE((yyvsp[0]), n_MAGIC_SCALAR);
-  }
-#line 6480 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 332:
-#line 2166 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NTYPE((yyvsp[0]), n_MAGIC_SCALAR);
-  }
-#line 6488 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 333:
-#line 2169 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NTYPE((yyvsp[0]), n_MAGIC_SCALAR);
-  }
-#line 6496 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 334:
-#line 2172 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NTYPE((yyvsp[0]), n_MAGIC_SCALAR);
-  }
-#line 6504 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 335:
-#line 2175 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NTYPE((yyvsp[0]), n_MAGIC_SCALAR);
-  }
-#line 6512 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 336:
-#line 2178 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NTYPE((yyvsp[0]), n_HEREDOC);
-  }
-#line 6520 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 339:
-#line 2186 "parser.y" /* yacc.c:1646  */
-    {
-    NMORE((yyvsp[0]), (yyvsp[-2]));
-    (yyval) = (yyvsp[0]);
-  }
-#line 6529 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 340:
-#line 2190 "parser.y" /* yacc.c:1646  */
-    {
-    NMORE((yyvsp[0]), (yyvsp[-1]));
-    (yyval) = (yyvsp[0]);
-  }
-#line 6538 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 341:
-#line 2194 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_UNARY_PREFIX_EXPRESSION);
-    (yyval)->appendChild(NTYPE((yyvsp[-1]), n_OPERATOR));
-    (yyval)->appendChild((yyvsp[0]));
-  }
-#line 6548 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 342:
-#line 2199 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_UNARY_PREFIX_EXPRESSION);
-    (yyval)->appendChild(NTYPE((yyvsp[-1]), n_OPERATOR));
-    (yyval)->appendChild((yyvsp[0]));
-  }
-#line 6558 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 343:
-#line 2204 "parser.y" /* yacc.c:1646  */
-    {
-    NTYPE((yyvsp[-3]), n_ARRAY_LITERAL);
-    (yyvsp[-3])->appendChild(NEXPAND((yyvsp[-2]), (yyvsp[-1]), (yyvsp[0])));
-    (yyval) = (yyvsp[-3]);
-  }
-#line 6568 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 344:
-#line 2209 "parser.y" /* yacc.c:1646  */
-    {
-    NTYPE((yyvsp[-2]), n_ARRAY_LITERAL);
-    (yyvsp[-2])->appendChild(NEXPAND((yyvsp[-2]), (yyvsp[-1]), (yyvsp[0])));
-    (yyval) = (yyvsp[-2]);
-  }
-#line 6578 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 346:
-#line 2218 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_CLASS_STATIC_ACCESS);
-    (yyval)->appendChild((yyvsp[-2]));
-    (yyval)->appendChild(NTYPE((yyvsp[0]), n_STRING));
-  }
-#line 6588 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 350:
-#line 2229 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NMORE((yyvsp[0]), (yyvsp[-2]));
-  }
-#line 6596 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 351:
-#line 2232 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NMORE((yyvsp[0]), (yyvsp[-1]));
-  }
-#line 6604 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 353:
-#line 2239 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_ARRAY_VALUE_LIST);
-  }
-#line 6612 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 354:
-#line 2242 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NMORE((yyvsp[-1]), (yyvsp[0]));
-  }
-#line 6620 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 355:
-#line 2248 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_EMPTY);
-  }
-#line 6628 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 357:
-#line 2259 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_ARRAY_VALUE);
-    (yyval)->appendChild((yyvsp[-2]));
-    (yyval)->appendChild((yyvsp[0]));
-
-    (yyval) = (yyvsp[-4])->appendChild((yyval));
-  }
-#line 6640 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 358:
-#line 2266 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_ARRAY_VALUE);
-    (yyval)->appendChild(NNEW(n_EMPTY));
-    (yyval)->appendChild((yyvsp[0]));
-
-    (yyval) = (yyvsp[-2])->appendChild((yyval));
-  }
-#line 6652 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 359:
-#line 2273 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_ARRAY_VALUE);
-    (yyval)->appendChild((yyvsp[-2]));
-    (yyval)->appendChild((yyvsp[0]));
-
-    (yyval) = NNEW(n_ARRAY_VALUE_LIST)->appendChild((yyval));
-  }
-#line 6664 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 360:
-#line 2280 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_ARRAY_VALUE);
-    (yyval)->appendChild(NNEW(n_EMPTY));
-    (yyval)->appendChild((yyvsp[0]));
-
-    (yyval) = NNEW(n_ARRAY_VALUE_LIST)->appendChild((yyval));
-  }
-#line 6676 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 366:
-#line 2310 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_OBJECT_PROPERTY_ACCESS);
-    (yyval)->appendChild((yyvsp[-4]));
-    (yyval)->appendChild((yyvsp[-2]));
-
-    if ((yyvsp[-1])->type != n_EMPTY) {
-      (yyval) = NNEW(n_METHOD_CALL)->appendChild((yyval));
-      (yyval)->appendChild((yyvsp[-1]));
-    }
-
-    for (xhpast::node_list_t::iterator ii = (yyvsp[0])->children.begin();
-      ii != (yyvsp[0])->children.end();
-      ++ii) {
-
-      if ((*ii)->type == n_CALL_PARAMETER_LIST) {
-        (yyval) = NNEW(n_METHOD_CALL)->appendChild((yyval));
-        (yyval)->appendChild((*ii));
-      } else {
-        (yyval) = NNEW(n_OBJECT_PROPERTY_ACCESS)->appendChild((yyval));
-        (yyval)->appendChild((*ii));
-      }
-    }
-  }
-#line 6704 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 368:
-#line 2337 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = (yyvsp[-1])->appendChildren((yyvsp[0]));
-  }
-#line 6712 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 369:
-#line 2340 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_EMPTY);
-  }
-#line 6720 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 370:
-#line 2346 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_EMPTY);
-    (yyval)->appendChild((yyvsp[-1]));
-    if ((yyvsp[0])->type != n_EMPTY) {
-      (yyval)->appendChild((yyvsp[0]));
-    }
-  }
-#line 6732 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 371:
-#line 2356 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_INDEX_ACCESS);
-    (yyval)->appendChild((yyvsp[-3]));
-    (yyval)->appendChild((yyvsp[-1]));
-    NMORE((yyval), (yyvsp[0]));
-  }
-#line 6743 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 372:
-#line 2362 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_INDEX_ACCESS);
-    (yyval)->appendChild((yyvsp[-3]));
-    (yyval)->appendChild((yyvsp[-1]));
-    NMORE((yyval), (yyvsp[0]));
-  }
-#line 6754 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 373:
-#line 2371 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NEXPAND((yyvsp[-2]), (yyvsp[-1]), (yyvsp[0]));
-  }
-#line 6762 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 376:
-#line 2379 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_EMPTY);
-  }
-#line 6770 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 378:
-#line 2386 "parser.y" /* yacc.c:1646  */
-    {
-    xhpast::Node *last = (yyvsp[-1]);
-    NMORE((yyvsp[-1]), (yyvsp[0]));
-    while (last->firstChild() &&
-           last->firstChild()->type == n_VARIABLE_VARIABLE) {
-      NMORE(last, (yyvsp[0]));
-      last = last->firstChild();
-    }
-    last->appendChild((yyvsp[0]));
-
-    (yyval) = (yyvsp[-1]);
-  }
-#line 6787 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 379:
-#line 2401 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_CLASS_STATIC_ACCESS);
-    (yyval)->appendChild((yyvsp[-2]));
-    (yyval)->appendChild((yyvsp[0]));
-  }
-#line 6797 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 380:
-#line 2406 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_CLASS_STATIC_ACCESS);
-    (yyval)->appendChild((yyvsp[-2]));
-    (yyval)->appendChild((yyvsp[0]));
-  }
-#line 6807 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 382:
-#line 2418 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_INDEX_ACCESS);
-    (yyval)->appendChild((yyvsp[-3]));
-    (yyval)->appendChild((yyvsp[-1]));
-    NMORE((yyval), (yyvsp[0]));
-  }
-#line 6818 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 383:
-#line 2424 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_INDEX_ACCESS);
-    (yyval)->appendChild((yyvsp[-3]));
-    (yyval)->appendChild((yyvsp[-1]));
-    NMORE((yyval), (yyvsp[0]));
-  }
-#line 6829 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 388:
-#line 2440 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NEXPAND((yyvsp[-2]), (yyvsp[-1]), (yyvsp[0]));
-  }
-#line 6837 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 389:
-#line 2443 "parser.y" /* yacc.c:1646  */
-    {
-    xhpast::Node *last = (yyvsp[-1]);
-    NMORE((yyvsp[-1]), (yyvsp[0]));
-    while (last->firstChild() &&
-           last->firstChild()->type == n_VARIABLE_VARIABLE) {
-      NMORE(last, (yyvsp[0]));
-      last = last->firstChild();
-    }
-    last->appendChild((yyvsp[0]));
-
-    (yyval) = (yyvsp[-1]);
-  }
-#line 6854 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 391:
-#line 2459 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_INDEX_ACCESS);
-    (yyval)->appendChild((yyvsp[-3]));
-    (yyval)->appendChild((yyvsp[-1]));
-    NMORE((yyval), (yyvsp[0]));
-  }
-#line 6865 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 392:
-#line 2465 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_INDEX_ACCESS);
-    (yyval)->appendChild((yyvsp[-3]));
-    (yyval)->appendChild((yyvsp[-1]));
-    NMORE((yyval), (yyvsp[0]));
-  }
-#line 6876 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 394:
-#line 2475 "parser.y" /* yacc.c:1646  */
-    {
-    NTYPE((yyvsp[0]), n_VARIABLE);
-  }
-#line 6884 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 395:
-#line 2478 "parser.y" /* yacc.c:1646  */
-    {
-    NSPAN((yyvsp[-3]), n_VARIABLE_EXPRESSION, (yyvsp[0]));
-    (yyvsp[-3])->appendChild((yyvsp[-1]));
-    (yyval) = (yyvsp[-3]);
-  }
-#line 6894 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 396:
-#line 2486 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_EMPTY);
-  }
-#line 6902 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 397:
-#line 2489 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = (yyvsp[0]);
-  }
-#line 6910 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 400:
-#line 2500 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_INDEX_ACCESS);
-    (yyval)->appendChild((yyvsp[-3]));
-    (yyval)->appendChild((yyvsp[-1]));
-    NMORE((yyval), (yyvsp[0]));
-  }
-#line 6921 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 401:
-#line 2506 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_INDEX_ACCESS);
-    (yyval)->appendChild((yyvsp[-3]));
-    (yyval)->appendChild((yyvsp[-1]));
-    NMORE((yyval), (yyvsp[0]));
-  }
-#line 6932 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 403:
-#line 2516 "parser.y" /* yacc.c:1646  */
-    {
-    NTYPE((yyvsp[0]), n_STRING);
-    (yyval) = (yyvsp[0]);
-  }
-#line 6941 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 404:
-#line 2520 "parser.y" /* yacc.c:1646  */
-    {
-  (yyval) = NEXPAND((yyvsp[-2]), (yyvsp[-1]), (yyvsp[0]));
-  }
-#line 6949 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 405:
-#line 2526 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NTYPE((yyvsp[0]), n_VARIABLE_VARIABLE);
-  }
-#line 6957 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 406:
-#line 2529 "parser.y" /* yacc.c:1646  */
-    {
-    (yyvsp[0]) = NTYPE((yyvsp[0]), n_VARIABLE_VARIABLE);
-
-    xhpast::Node *last = (yyvsp[-1]);
-    while (last->firstChild() &&
-           last->firstChild()->type == n_VARIABLE_VARIABLE) {
-      last = last->firstChild();
-    }
-    last->appendChild((yyvsp[0]));
-
-    (yyval) = (yyvsp[-1]);
-  }
-#line 6974 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 407:
-#line 2544 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = (yyvsp[-2])->appendChild((yyvsp[0]));
-  }
-#line 6982 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 408:
-#line 2547 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_ASSIGNMENT_LIST);
-    (yyval)->appendChild((yyvsp[0]));
-  }
-#line 6991 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 410:
-#line 2555 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_LIST);
-    (yyval)->appendChild(NEXPAND((yyvsp[-2]), (yyvsp[-1]), (yyvsp[0])));
-  }
-#line 7000 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 411:
-#line 2559 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_EMPTY);
-  }
-#line 7008 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 412:
-#line 2565 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_ARRAY_VALUE_LIST);
-  }
-#line 7016 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 413:
-#line 2568 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NMORE((yyvsp[-1]), (yyvsp[0]));
-  }
-#line 7024 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 414:
-#line 2574 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_ARRAY_VALUE);
-    (yyval)->appendChild((yyvsp[-2]));
-    (yyval)->appendChild((yyvsp[0]));
-
-    (yyval) = (yyvsp[-4])->appendChild((yyval));
-  }
-#line 7036 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 415:
-#line 2581 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_ARRAY_VALUE);
-    (yyval)->appendChild(NNEW(n_EMPTY));
-    (yyval)->appendChild((yyvsp[0]));
-
-    (yyval) = (yyvsp[-2])->appendChild((yyval));
-  }
-#line 7048 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 416:
-#line 2588 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_ARRAY_VALUE);
-    (yyval)->appendChild((yyvsp[-2]));
-    (yyval)->appendChild((yyvsp[0]));
-
-    (yyval) = NNEW(n_ARRAY_VALUE_LIST)->appendChild((yyval));
-  }
-#line 7060 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 417:
-#line 2595 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_ARRAY_VALUE);
-    (yyval)->appendChild(NNEW(n_EMPTY));
-    (yyval)->appendChild((yyvsp[0]));
-
-    (yyval) = NNEW(n_ARRAY_VALUE_LIST)->appendChild((yyval));
-  }
-#line 7072 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 418:
-#line 2602 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_ARRAY_VALUE);
-    (yyval)->appendChild((yyvsp[-3]));
-    (yyval)->appendChild(NTYPE((yyvsp[-1]), n_VARIABLE_REFERENCE)->appendChild((yyvsp[0])));
-
-    (yyval) = (yyvsp[-5])->appendChild((yyval));
-  }
-#line 7084 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 419:
-#line 2609 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_ARRAY_VALUE);
-    (yyval)->appendChild(NNEW(n_EMPTY));
-    (yyval)->appendChild(NTYPE((yyvsp[-1]), n_VARIABLE_REFERENCE)->appendChild((yyvsp[0])));
-
-    (yyval) = (yyvsp[-3])->appendChild((yyval));
-  }
-#line 7096 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 420:
-#line 2616 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_ARRAY_VALUE);
-    (yyval)->appendChild((yyvsp[-3]));
-    (yyval)->appendChild(NTYPE((yyvsp[-1]), n_VARIABLE_REFERENCE)->appendChild((yyvsp[0])));
-
-    (yyval) = NNEW(n_ARRAY_VALUE_LIST)->appendChild((yyval));
-  }
-#line 7108 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 421:
-#line 2623 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_ARRAY_VALUE);
-    (yyval)->appendChild(NNEW(n_EMPTY));
-    (yyval)->appendChild(NTYPE((yyvsp[-1]), n_VARIABLE_REFERENCE)->appendChild((yyvsp[0])));
-
-    (yyval) = NNEW(n_ARRAY_VALUE_LIST)->appendChild((yyval));
-  }
-#line 7120 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 422:
-#line 2633 "parser.y" /* yacc.c:1646  */
-    {
-    NTYPE((yyvsp[-3]), n_SYMBOL_NAME);
-
-    NSPAN((yyvsp[-2]), n_CALL_PARAMETER_LIST, (yyvsp[0]));
-    (yyvsp[-2])->appendChildren((yyvsp[-1]));
-
-    (yyval) = NNEW(n_FUNCTION_CALL);
-    (yyval)->appendChild((yyvsp[-3]));
-    (yyval)->appendChild((yyvsp[-2]));
-  }
-#line 7135 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 423:
-#line 2643 "parser.y" /* yacc.c:1646  */
-    {
-    NTYPE((yyvsp[-3]), n_SYMBOL_NAME);
-
-    NSPAN((yyvsp[-2]), n_CALL_PARAMETER_LIST, (yyvsp[0]));
-    (yyvsp[-2])->appendChild((yyvsp[-1]));
-
-    (yyval) = NNEW(n_FUNCTION_CALL);
-    (yyval)->appendChild((yyvsp[-3]));
-    (yyval)->appendChild((yyvsp[-2]));
-  }
-#line 7150 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 424:
-#line 2653 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NTYPE((yyvsp[-1]), n_INCLUDE_FILE)->appendChild((yyvsp[0]));
-  }
-#line 7158 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 425:
-#line 2656 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NTYPE((yyvsp[-1]), n_INCLUDE_FILE)->appendChild((yyvsp[0]));
-  }
-#line 7166 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 426:
-#line 2659 "parser.y" /* yacc.c:1646  */
-    {
-    NTYPE((yyvsp[-3]), n_SYMBOL_NAME);
-
-    NSPAN((yyvsp[-2]), n_CALL_PARAMETER_LIST, (yyvsp[0]));
-    (yyvsp[-2])->appendChild((yyvsp[-1]));
-
-    (yyval) = NNEW(n_FUNCTION_CALL);
-    (yyval)->appendChild((yyvsp[-3]));
-    (yyval)->appendChild((yyvsp[-2]));
-  }
-#line 7181 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 427:
-#line 2669 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NTYPE((yyvsp[-1]), n_INCLUDE_FILE)->appendChild((yyvsp[0]));
-  }
-#line 7189 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 428:
-#line 2672 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NTYPE((yyvsp[-1]), n_INCLUDE_FILE)->appendChild((yyvsp[0]));
-  }
-#line 7197 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 429:
-#line 2678 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_EMPTY);
-    (yyval)->appendChild((yyvsp[0]));
-  }
-#line 7206 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 430:
-#line 2682 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = (yyvsp[-2])->appendChild((yyvsp[0]));
-  }
-#line 7214 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 431:
-#line 2688 "parser.y" /* yacc.c:1646  */
-    {
-    NSPAN((yyvsp[-2]), n_PARENTHETICAL_EXPRESSION, (yyvsp[0]));
-    (yyvsp[-2])->appendChild((yyvsp[-1]));
-    (yyval) = (yyvsp[-2]);
-  }
-#line 7224 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 432:
-#line 2693 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NEXPAND((yyvsp[-2]), (yyvsp[-1]), (yyvsp[0]));
-  }
-#line 7232 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 433:
-#line 2699 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_INDEX_ACCESS);
-    (yyval)->appendChild((yyvsp[-3]));
-    (yyval)->appendChild((yyvsp[-1]));
-    NMORE((yyval), (yyvsp[0]));
-  }
-#line 7243 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 434:
-#line 2705 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_INDEX_ACCESS);
-    (yyval)->appendChild((yyvsp[-3]));
-    (yyval)->appendChild((yyvsp[-1]));
-    NMORE((yyval), (yyvsp[0]));
-  }
-#line 7254 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 435:
-#line 2711 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_INDEX_ACCESS);
-    (yyval)->appendChild(NTYPE((yyvsp[-3]), n_STRING_SCALAR));
-    (yyval)->appendChild((yyvsp[-1]));
-    NMORE((yyval), (yyvsp[0]));
-  }
-#line 7265 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 436:
-#line 2717 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_INDEX_ACCESS);
-    (yyval)->appendChild((yyvsp[-3]));
-    (yyval)->appendChild((yyvsp[-1]));
-    NMORE((yyval), (yyvsp[0]));
-  }
-#line 7276 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 437:
-#line 2723 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_INDEX_ACCESS);
-    (yyval)->appendChild(NTYPE((yyvsp[-3]), n_STRING));
-    (yyval)->appendChild((yyvsp[-1]));
-    NMORE((yyval), (yyvsp[0]));
-  }
-#line 7287 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 438:
-#line 2732 "parser.y" /* yacc.c:1646  */
-    {
-    NTYPE((yyvsp[-3]), n_ARRAY_LITERAL);
-    (yyvsp[-3])->appendChild(NEXPAND((yyvsp[-2]), (yyvsp[-1]), (yyvsp[0])));
-    (yyval) = (yyvsp[-3]);
-  }
-#line 7297 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 439:
-#line 2737 "parser.y" /* yacc.c:1646  */
-    {
-    NTYPE((yyvsp[-2]), n_ARRAY_LITERAL);
-    (yyvsp[-2])->appendChild(NEXPAND((yyvsp[-2]), (yyvsp[-1]), (yyvsp[0])));
-    (yyval) = (yyvsp[-2]);
-  }
-#line 7307 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 440:
-#line 2745 "parser.y" /* yacc.c:1646  */
-    {
-    NTYPE((yyvsp[-2]), n_NEW);
-    (yyvsp[-2])->appendChild((yyvsp[-1]));
-    (yyvsp[-2])->appendChild((yyvsp[0]));
-    (yyval) = (yyvsp[-2]);
-  }
-#line 7318 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 441:
-#line 2754 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_CLASS_STATIC_ACCESS);
-    (yyval)->appendChild((yyvsp[-2]));
-    (yyval)->appendChild(NTYPE((yyvsp[0]), n_STRING));
-  }
-#line 7328 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-  case 442:
-#line 2759 "parser.y" /* yacc.c:1646  */
-    {
-    (yyval) = NNEW(n_CLASS_STATIC_ACCESS);
-    (yyval)->appendChild((yyvsp[-2]));
-    (yyval)->appendChild(NTYPE((yyvsp[0]), n_STRING));
-  }
-#line 7338 "parser.yacc.cpp" /* yacc.c:1646  */
-    break;
-
-
-#line 7342 "parser.yacc.cpp" /* yacc.c:1646  */
-      default: break;
-    }
-  /* User semantic actions sometimes alter yychar, and that requires
-     that yytoken be updated with the new translation.  We take the
-     approach of translating immediately before every use of yytoken.
-     One alternative is translating here after every semantic action,
-     but that translation would be missed if the semantic action invokes
-     YYABORT, YYACCEPT, or YYERROR immediately after altering yychar or
-     if it invokes YYBACKUP.  In the case of YYABORT or YYACCEPT, an
-     incorrect destructor might then be invoked immediately.  In the
-     case of YYERROR or YYBACKUP, subsequent parser actions might lead
-     to an incorrect destructor call or verbose syntax error message
-     before the lookahead is translated.  */
-  YY_SYMBOL_PRINT ("-> $$ =", yyr1[yyn], &yyval, &yyloc);
-
-  YYPOPSTACK (yylen);
-  yylen = 0;
-  YY_STACK_PRINT (yyss, yyssp);
-
-  *++yyvsp = yyval;
-
-  /* Now 'shift' the result of the reduction.  Determine what state
-     that goes to, based on the state we popped back to and the rule
-     number reduced by.  */
-
-  yyn = yyr1[yyn];
-
-  yystate = yypgoto[yyn - YYNTOKENS] + *yyssp;
-  if (0 <= yystate && yystate <= YYLAST && yycheck[yystate] == *yyssp)
-    yystate = yytable[yystate];
-  else
-    yystate = yydefgoto[yyn - YYNTOKENS];
-
-  goto yynewstate;
-
-
-/*--------------------------------------.
-| yyerrlab -- here on detecting error.  |
-`--------------------------------------*/
-yyerrlab:
-  /* Make sure we have latest lookahead translation.  See comments at
-     user semantic actions for why this is necessary.  */
-  yytoken = yychar == YYEMPTY ? YYEMPTY : YYTRANSLATE (yychar);
-
-  /* If not already recovering from an error, report this error.  */
-  if (!yyerrstatus)
-    {
-      ++yynerrs;
-#if ! YYERROR_VERBOSE
-      yyerror (yyscanner, root, YY_("syntax error"));
-#else
-# define YYSYNTAX_ERROR yysyntax_error (&yymsg_alloc, &yymsg, \
-                                        yyssp, yytoken)
-      {
-        char const *yymsgp = YY_("syntax error");
-        int yysyntax_error_status;
-        yysyntax_error_status = YYSYNTAX_ERROR;
-        if (yysyntax_error_status == 0)
-          yymsgp = yymsg;
-        else if (yysyntax_error_status == 1)
-          {
-            if (yymsg != yymsgbuf)
-              YYSTACK_FREE (yymsg);
-            yymsg = (char *) YYSTACK_ALLOC (yymsg_alloc);
-            if (!yymsg)
-              {
-                yymsg = yymsgbuf;
-                yymsg_alloc = sizeof yymsgbuf;
-                yysyntax_error_status = 2;
-              }
-            else
-              {
-                yysyntax_error_status = YYSYNTAX_ERROR;
-                yymsgp = yymsg;
-              }
-          }
-        yyerror (yyscanner, root, yymsgp);
-        if (yysyntax_error_status == 2)
-          goto yyexhaustedlab;
-      }
-# undef YYSYNTAX_ERROR
-#endif
-    }
-
-
-
-  if (yyerrstatus == 3)
-    {
-      /* If just tried and failed to reuse lookahead token after an
-         error, discard it.  */
-
-      if (yychar <= YYEOF)
-        {
-          /* Return failure if at end of input.  */
-          if (yychar == YYEOF)
-            YYABORT;
-        }
-      else
-        {
-          yydestruct ("Error: discarding",
-                      yytoken, &yylval, yyscanner, root);
-          yychar = YYEMPTY;
-        }
-    }
-
-  /* Else will try to reuse lookahead token after shifting the error
-     token.  */
-  goto yyerrlab1;
-
-
-/*---------------------------------------------------.
-| yyerrorlab -- error raised explicitly by YYERROR.  |
-`---------------------------------------------------*/
-yyerrorlab:
-
-  /* Pacify compilers like GCC when the user code never invokes
-     YYERROR and the label yyerrorlab therefore never appears in user
-     code.  */
-  if (/*CONSTCOND*/ 0)
-     goto yyerrorlab;
-
-  /* Do not reclaim the symbols of the rule whose action triggered
-     this YYERROR.  */
-  YYPOPSTACK (yylen);
-  yylen = 0;
-  YY_STACK_PRINT (yyss, yyssp);
-  yystate = *yyssp;
-  goto yyerrlab1;
-
-
-/*-------------------------------------------------------------.
-| yyerrlab1 -- common code for both syntax error and YYERROR.  |
-`-------------------------------------------------------------*/
-yyerrlab1:
-  yyerrstatus = 3;      /* Each real token shifted decrements this.  */
-
-  for (;;)
-    {
-      yyn = yypact[yystate];
-      if (!yypact_value_is_default (yyn))
-        {
-          yyn += YYTERROR;
-          if (0 <= yyn && yyn <= YYLAST && yycheck[yyn] == YYTERROR)
-            {
-              yyn = yytable[yyn];
-              if (0 < yyn)
-                break;
-            }
-        }
-
-      /* Pop the current state because it cannot handle the error token.  */
-      if (yyssp == yyss)
-        YYABORT;
-
-
-      yydestruct ("Error: popping",
-                  yystos[yystate], yyvsp, yyscanner, root);
-      YYPOPSTACK (1);
-      yystate = *yyssp;
-      YY_STACK_PRINT (yyss, yyssp);
-    }
-
-  YY_IGNORE_MAYBE_UNINITIALIZED_BEGIN
-  *++yyvsp = yylval;
-  YY_IGNORE_MAYBE_UNINITIALIZED_END
-
-
-  /* Shift the error token.  */
-  YY_SYMBOL_PRINT ("Shifting", yystos[yyn], yyvsp, yylsp);
-
-  yystate = yyn;
-  goto yynewstate;
-
-
-/*-------------------------------------.
-| yyacceptlab -- YYACCEPT comes here.  |
-`-------------------------------------*/
-yyacceptlab:
-  yyresult = 0;
-  goto yyreturn;
-
-/*-----------------------------------.
-| yyabortlab -- YYABORT comes here.  |
-`-----------------------------------*/
-yyabortlab:
-  yyresult = 1;
-  goto yyreturn;
-
-#if !defined yyoverflow || YYERROR_VERBOSE
-/*-------------------------------------------------.
-| yyexhaustedlab -- memory exhaustion comes here.  |
-`-------------------------------------------------*/
-yyexhaustedlab:
-  yyerror (yyscanner, root, YY_("memory exhausted"));
-  yyresult = 2;
-  /* Fall through.  */
-#endif
-
-yyreturn:
-  if (yychar != YYEMPTY)
-    {
-      /* Make sure we have latest lookahead translation.  See comments at
-         user semantic actions for why this is necessary.  */
-      yytoken = YYTRANSLATE (yychar);
-      yydestruct ("Cleanup: discarding lookahead",
-                  yytoken, &yylval, yyscanner, root);
-    }
-  /* Do not reclaim the symbols of the rule whose action triggered
-     this YYABORT or YYACCEPT.  */
-  YYPOPSTACK (yylen);
-  YY_STACK_PRINT (yyss, yyssp);
-  while (yyssp != yyss)
-    {
-      yydestruct ("Cleanup: popping",
-                  yystos[*yyssp], yyvsp, yyscanner, root);
-      YYPOPSTACK (1);
-    }
-#ifndef yyoverflow
-  if (yyss != yyssa)
-    YYSTACK_FREE (yyss);
-#endif
-#if YYERROR_VERBOSE
-  if (yymsg != yymsgbuf)
-    YYSTACK_FREE (yymsg);
-#endif
-  return yyresult;
-}
-#line 2766 "parser.y" /* yacc.c:1906  */
-
-
-const char* yytokname(int tok) {
-  if (tok < 255) {
-    return NULL;
-  }
-  return yytname[YYTRANSLATE(tok)];
-}
-/* @generated */
diff --git a/support/xhpast/parser_nodes.php b/support/xhpast/parser_nodes.php
index 6418235..b2b1b83 100644
--- a/support/xhpast/parser_nodes.php
+++ b/support/xhpast/parser_nodes.php
@@ -1,126 +1,127 @@
 <?php
 
 /**
  * @generated
  * @undivinable
  */
 function xhp_parser_node_constants() {
   return array(
     9000 => 'n_PROGRAM',
     9001 => 'n_SYMBOL_NAME',
     9002 => 'n_HALT_COMPILER',
     9003 => 'n_NAMESPACE',
     9004 => 'n_STATEMENT',
     9005 => 'n_EMPTY',
     9006 => 'n_STATEMENT_LIST',
     9007 => 'n_OPEN_TAG',
     9008 => 'n_CLOSE_TAG',
     9009 => 'n_USE_LIST',
     9010 => 'n_USE',
     9011 => 'n_CONSTANT_DECLARATION_LIST',
     9012 => 'n_CONSTANT_DECLARATION',
     9013 => 'n_STRING',
     9014 => 'n_LABEL',
     9015 => 'n_CONDITION_LIST',
     9016 => 'n_CONTROL_CONDITION',
     9017 => 'n_IF',
     9018 => 'n_ELSEIF',
     9019 => 'n_ELSE',
     9020 => 'n_WHILE',
     9021 => 'n_DO_WHILE',
     9022 => 'n_FOR',
     9023 => 'n_FOR_EXPRESSION',
     9024 => 'n_SWITCH',
     9025 => 'n_BREAK',
     9026 => 'n_CONTINUE',
     9027 => 'n_RETURN',
     9028 => 'n_GLOBAL_DECLARATION_LIST',
     9029 => 'n_GLOBAL_DECLARATION',
     9030 => 'n_STATIC_DECLARATION_LIST',
     9031 => 'n_STATIC_DECLARATION',
     9032 => 'n_ECHO_LIST',
     9033 => 'n_ECHO',
     9034 => 'n_INLINE_HTML',
     9035 => 'n_UNSET_LIST',
     9036 => 'n_UNSET',
     9037 => 'n_FOREACH',
     9038 => 'n_FOREACH_EXPRESSION',
     9039 => 'n_THROW',
     9040 => 'n_GOTO',
     9041 => 'n_TRY',
     9042 => 'n_CATCH_LIST',
     9043 => 'n_CATCH',
     9044 => 'n_DECLARE',
     9045 => 'n_DECLARE_DECLARATION_LIST',
     9046 => 'n_DECLARE_DECLARATION',
     9047 => 'n_VARIABLE',
     9048 => 'n_REFERENCE',
     9049 => 'n_VARIABLE_REFERENCE',
     9050 => 'n_FUNCTION_DECLARATION',
     9051 => 'n_CLASS_DECLARATION',
     9052 => 'n_CLASS_ATTRIBUTES',
     9053 => 'n_EXTENDS',
     9054 => 'n_EXTENDS_LIST',
     9055 => 'n_IMPLEMENTS_LIST',
     9056 => 'n_INTERFACE_DECLARATION',
     9057 => 'n_CASE',
     9058 => 'n_DEFAULT',
     9059 => 'n_DECLARATION_PARAMETER_LIST',
     9060 => 'n_DECLARATION_PARAMETER',
     9061 => 'n_TYPE_NAME',
     9062 => 'n_VARIABLE_VARIABLE',
     9063 => 'n_CLASS_MEMBER_DECLARATION_LIST',
     9064 => 'n_CLASS_MEMBER_DECLARATION',
     9065 => 'n_CLASS_CONSTANT_DECLARATION_LIST',
     9066 => 'n_CLASS_CONSTANT_DECLARATION',
     9067 => 'n_METHOD_DECLARATION',
     9068 => 'n_METHOD_MODIFIER_LIST',
     9069 => 'n_FUNCTION_MODIFIER_LIST',
     9070 => 'n_CLASS_MEMBER_MODIFIER_LIST',
     9071 => 'n_EXPRESSION_LIST',
     9072 => 'n_LIST',
     9073 => 'n_ASSIGNMENT',
     9074 => 'n_NEW',
     9075 => 'n_UNARY_PREFIX_EXPRESSION',
     9076 => 'n_UNARY_POSTFIX_EXPRESSION',
     9077 => 'n_BINARY_EXPRESSION',
     9078 => 'n_TERNARY_EXPRESSION',
     9079 => 'n_CAST_EXPRESSION',
     9080 => 'n_CAST',
     9081 => 'n_OPERATOR',
     9082 => 'n_ARRAY_LITERAL',
     9083 => 'n_EXIT_EXPRESSION',
     9084 => 'n_BACKTICKS_EXPRESSION',
     9085 => 'n_LEXICAL_VARIABLE_LIST',
     9086 => 'n_NUMERIC_SCALAR',
     9087 => 'n_STRING_SCALAR',
     9088 => 'n_MAGIC_SCALAR',
     9089 => 'n_CLASS_STATIC_ACCESS',
     9090 => 'n_CLASS_NAME',
     9091 => 'n_MAGIC_CLASS_KEYWORD',
     9092 => 'n_OBJECT_PROPERTY_ACCESS',
     9093 => 'n_ARRAY_VALUE_LIST',
     9094 => 'n_ARRAY_VALUE',
     9095 => 'n_CALL_PARAMETER_LIST',
     9096 => 'n_VARIABLE_EXPRESSION',
     9097 => 'n_INCLUDE_FILE',
     9098 => 'n_HEREDOC',
     9099 => 'n_FUNCTION_CALL',
     9100 => 'n_INDEX_ACCESS',
     9101 => 'n_ASSIGNMENT_LIST',
     9102 => 'n_METHOD_CALL',
     9103 => 'n_CONCATENATION_LIST',
     9104 => 'n_PARENTHETICAL_EXPRESSION',
     9105 => 'n_TRAIT_USE',
     9106 => 'n_TRAIT_USE_LIST',
     9107 => 'n_TRAIT_ADAPTATION_LIST',
     9108 => 'n_TRAIT_INSTEADOF',
     9109 => 'n_TRAIT_REFERENCE_LIST',
     9110 => 'n_TRAIT_METHOD_REFERENCE',
     9111 => 'n_TRAIT_AS',
     9112 => 'n_YIELD',
     9113 => 'n_FINALLY',
     9114 => 'n_UNPACK',
     9115 => 'n_DECLARATION_RETURN',
+    9116 => 'n_NULLABLE_TYPE',
   );
 }
diff --git a/support/xhpast/xhpast.cpp b/support/xhpast/xhpast.cpp
index 8bf79a7..3462ab7 100644
--- a/support/xhpast/xhpast.cpp
+++ b/support/xhpast/xhpast.cpp
@@ -1,121 +1,121 @@
 #include "ast.hpp"
 #include <iostream>
 #include <sstream>
 #include <fstream>
 using namespace std;
 
 int xhpastparse(void*, xhpast::Node **);
 
 int xhpast_process(std::string &in);
 void print_node(xhpast::Node *node);
 
 int main(int argc, char* argv[]) {
   if (argc != 1) {
     // Coupling: modify also src/parser/xhpast/bin/PhutilXHPASTBinary.php
-    cout << "7.1.0\n";
+    cout << "7.1.2\n";
     return 0;
   }
 
   ifstream inputFile;
   istream *inputStream;
   inputStream = &cin;
 
   std::stringbuf sb;
   *inputStream >> noskipws >> &sb;
   std::string buffer = sb.str();
   inputFile.close();
 
   return xhpast_process(buffer);
 }
 
 int xhpast_process(std::string &in) {
 
   char *buffer;
   in.reserve(in.size() + 1);
   buffer = const_cast<char*>(in.c_str());
   buffer[in.size() + 1] = 0; // need double NULL for scan_buffer
 
   void* scanner;
   yy_extra_type extra;
   extra.insert_token = 0;//flags.eval ? T_OPEN_TAG_FAKE : 0;
 
   xhpast::Node *root = NULL;
 
   xhpastlex_init(&scanner);
   xhpastset_extra(&extra, scanner);
   xhpast_scan_buffer(buffer, in.size() + 2, scanner);
   xhpastparse(scanner, &root);
   xhpastlex_destroy(scanner);
 
   if (extra.terminated) {
     fprintf(
       stderr,
       "XHPAST Parse Error: %s on line %d\n",
       extra.error.c_str(),
       (int)extra.lineno);
     return 1;
   }
 
   printf("{");
   printf("\"tree\":");
   if (root) {
     // Extend the right token for the root node to the end of the concrete
     // token stream. This ensure all tokens appear in the tree. If we don't
     // do this and the file ends in tokens which don't go to the parser (like
     // comments and whitespace) they won't be represented in the tree.
     root->r_tok = (extra.token_list.size() - 1);
     print_node(root);
   } else {
     printf("null");
   }
   printf(",");
   printf("\"stream\":");
   printf("[");
 
   if (!extra.token_list.empty()) {
     for (xhpast::token_list_t::iterator ii = extra.token_list.begin();;) {
       printf("[%d, %d]", (*ii)->type, (int)(*ii)->value.length());
       if (++ii != extra.token_list.end()) {
         printf(",");
       } else {
         break;
       }
     }
   }
   printf("]");
   printf("}\n");
 
   return 0;
 }
 
 void print_node(xhpast::Node *node) {
   int l = -1;
   if (node->l_tok != -1) {
     l = node->l_tok;
   }
 
   if (l == -1) {
     printf("[%u]", node->type);
   } else {
     int r = -1;
 
     if (node->r_tok != -1) {
       r = node->r_tok;
     }
 
     printf("[%u, %d, %d", node->type, l, r);
     if (!node->children.empty()) {
       printf(", [");
       for (xhpast::node_list_t::iterator ii = node->children.begin();;) {
         print_node(*ii);
         if (++ii != node->children.end()) {
           printf(",");
         } else {
           break;
         }
       }
       printf("]");
     }
     printf("]");
   }
 }