Remove dev dependencies and update the rest.

8 files changed, 0 insertions, 2773 deletions

diff --git a/vendor/nikic/php-parser/grammar/README.md b/vendor/nikic/php-parser/grammar/README.md
deleted file mode 100644
index 4bae11d82..000000000
--- a/vendor/nikic/php-parser/grammar/README.md
+++ /dev/null
@@ -1,30 +0,0 @@
-What do all those files mean?
-=============================
-
- * `php5.y`:             PHP 5 grammar written in a pseudo language
- * `php7.y`:             PHP 7 grammar written in a pseudo language
- * `tokens.y`:           Tokens definition shared between PHP 5 and PHP 7 grammars
- * `parser.template`:    A `kmyacc` parser prototype file for PHP
- * `tokens.template`:    A `kmyacc` prototype file for the `Tokens` class
- * `rebuildParsers.php`: Preprocesses the grammar and builds the parser using `kmyacc`
-
-.phpy pseudo language
-=====================
-
-The `.y` file is a normal grammar in `kmyacc` (`yacc`) style, with some transformations
-applied to it:
-
- * Nodes are created using the syntax `Name[..., ...]`. This is transformed into
-   `new Name(..., ..., attributes())`
- * Some function-like constructs are resolved (see `rebuildParsers.php` for a list)
-
-Building the parser
-===================
-
-Run `php grammar/rebuildParsers.php` to rebuild the parsers. Additional options:
-
- * The `KMYACC` environment variable can be used to specify an alternative `kmyacc` binary.
-   By default the `phpyacc` dev dependency will be used. To use the original `kmyacc`, you
-   need to compile [moriyoshi's fork](https://github.com/moriyoshi/kmyacc-forked).
- * The `--debug` option enables emission of debug symbols and creates the `y.output` file.
- * The `--keep-tmp-grammar` option preserves the preprocessed grammar file.
diff --git a/vendor/nikic/php-parser/grammar/parser.template b/vendor/nikic/php-parser/grammar/parser.template
deleted file mode 100644
index 6166607c9..000000000
--- a/vendor/nikic/php-parser/grammar/parser.template
+++ /dev/null
@@ -1,106 +0,0 @@
-<?php
-$meta #
-#semval($) $this->semValue
-#semval($,%t) $this->semValue
-#semval(%n) $stackPos-(%l-%n)
-#semval(%n,%t) $stackPos-(%l-%n)
-
-namespace PhpParser\Parser;
-
-use PhpParser\Error;
-use PhpParser\Node;
-use PhpParser\Node\Expr;
-use PhpParser\Node\Name;
-use PhpParser\Node\Scalar;
-use PhpParser\Node\Stmt;
-#include;
-
-/* This is an automatically GENERATED file, which should not be manually edited.
- * Instead edit one of the following:
- *  * the grammar files grammar/php5.y or grammar/php7.y
- *  * the skeleton file grammar/parser.template
- *  * the preprocessing script grammar/rebuildParsers.php
- */
-class #(-p) extends \PhpParser\ParserAbstract
-{
-    protected $tokenToSymbolMapSize = #(YYMAXLEX);
-    protected $actionTableSize = #(YYLAST);
-    protected $gotoTableSize = #(YYGLAST);
-
-    protected $invalidSymbol = #(YYBADCH);
-    protected $errorSymbol = #(YYINTERRTOK);
-    protected $defaultAction = #(YYDEFAULT);
-    protected $unexpectedTokenRule = #(YYUNEXPECTED);
-
-    protected $YY2TBLSTATE = #(YY2TBLSTATE);
-    protected $numNonLeafStates = #(YYNLSTATES);
-
-    protected $symbolToName = array(
-        #listvar terminals
-    );
-
-    protected $tokenToSymbol = array(
-        #listvar yytranslate
-    );
-
-    protected $action = array(
-        #listvar yyaction
-    );
-
-    protected $actionCheck = array(
-        #listvar yycheck
-    );
-
-    protected $actionBase = array(
-        #listvar yybase
-    );
-
-    protected $actionDefault = array(
-        #listvar yydefault
-    );
-
-    protected $goto = array(
-        #listvar yygoto
-    );
-
-    protected $gotoCheck = array(
-        #listvar yygcheck
-    );
-
-    protected $gotoBase = array(
-        #listvar yygbase
-    );
-
-    protected $gotoDefault = array(
-        #listvar yygdefault
-    );
-
-    protected $ruleToNonTerminal = array(
-        #listvar yylhs
-    );
-
-    protected $ruleToLength = array(
-        #listvar yylen
-    );
-#if -t
-
-    protected $productions = array(
-        #production-strings;
-    );
-#endif
-
-    protected function initReduceCallbacks() {
-        $this->reduceCallbacks = [
-#reduce
-            %n => function ($stackPos) {
-                %b
-            },
-#noact
-            %n => function ($stackPos) {
-                $this->semValue = $this->semStack[$stackPos];
-            },
-#endreduce
-        ];
-    }
-}
-#tailcode;
diff --git a/vendor/nikic/php-parser/grammar/php5.y b/vendor/nikic/php-parser/grammar/php5.y
deleted file mode 100644
index a62e9a310..000000000
--- a/vendor/nikic/php-parser/grammar/php5.y
+++ /dev/null
@@ -1,1036 +0,0 @@
-%pure_parser
-%expect 6
-
-%tokens
-
-%%
-
-start:
-    top_statement_list                                      { $$ = $this->handleNamespaces($1); }
-;
-
-top_statement_list_ex:
-      top_statement_list_ex top_statement                   { pushNormalizing($1, $2); }
-    | /* empty */                                           { init(); }
-;
-
-top_statement_list:
-      top_statement_list_ex
-          { makeZeroLengthNop($nop, $this->lookaheadStartAttributes);
-            if ($nop !== null) { $1[] = $nop; } $$ = $1; }
-;
-
-ampersand:
-      T_AMPERSAND_FOLLOWED_BY_VAR_OR_VARARG
-    | T_AMPERSAND_NOT_FOLLOWED_BY_VAR_OR_VARARG
-;
-
-reserved_non_modifiers:
-      T_INCLUDE | T_INCLUDE_ONCE | T_EVAL | T_REQUIRE | T_REQUIRE_ONCE | T_LOGICAL_OR | T_LOGICAL_XOR | T_LOGICAL_AND
-    | T_INSTANCEOF | T_NEW | T_CLONE | T_EXIT | T_IF | T_ELSEIF | T_ELSE | T_ENDIF | T_ECHO | T_DO | T_WHILE
-    | T_ENDWHILE | T_FOR | T_ENDFOR | T_FOREACH | T_ENDFOREACH | T_DECLARE | T_ENDDECLARE | T_AS | T_TRY | T_CATCH
-    | T_FINALLY | T_THROW | T_USE | T_INSTEADOF | T_GLOBAL | T_VAR | T_UNSET | T_ISSET | T_EMPTY | T_CONTINUE | T_GOTO
-    | T_FUNCTION | T_CONST | T_RETURN | T_PRINT | T_YIELD | T_LIST | T_SWITCH | T_ENDSWITCH | T_CASE | T_DEFAULT
-    | T_BREAK | T_ARRAY | T_CALLABLE | T_EXTENDS | T_IMPLEMENTS | T_NAMESPACE | T_TRAIT | T_INTERFACE | T_CLASS
-    | T_CLASS_C | T_TRAIT_C | T_FUNC_C | T_METHOD_C | T_LINE | T_FILE | T_DIR | T_NS_C | T_HALT_COMPILER | T_FN
-    | T_MATCH
-;
-
-semi_reserved:
-      reserved_non_modifiers
-    | T_STATIC | T_ABSTRACT | T_FINAL | T_PRIVATE | T_PROTECTED | T_PUBLIC
-;
-
-identifier_ex:
-      T_STRING                                              { $$ = Node\Identifier[$1]; }
-    | semi_reserved                                         { $$ = Node\Identifier[$1]; }
-;
-
-identifier:
-      T_STRING                                              { $$ = Node\Identifier[$1]; }
-;
-
-reserved_non_modifiers_identifier:
-      reserved_non_modifiers                                { $$ = Node\Identifier[$1]; }
-;
-
-namespace_name:
-      T_STRING                                              { $$ = Name[$1]; }
-    | T_NAME_QUALIFIED                                      { $$ = Name[$1]; }
-;
-
-legacy_namespace_name:
-      namespace_name                                        { $$ = $1; }
-    | T_NAME_FULLY_QUALIFIED                                { $$ = Name[substr($1, 1)]; }
-;
-
-plain_variable:
-      T_VARIABLE                                            { $$ = Expr\Variable[parseVar($1)]; }
-;
-
-top_statement:
-      statement                                             { $$ = $1; }
-    | function_declaration_statement                        { $$ = $1; }
-    | class_declaration_statement                           { $$ = $1; }
-    | T_HALT_COMPILER
-          { $$ = Stmt\HaltCompiler[$this->lexer->handleHaltCompiler()]; }
-    | T_NAMESPACE namespace_name ';'
-          { $$ = Stmt\Namespace_[$2, null];
-            $$->setAttribute('kind', Stmt\Namespace_::KIND_SEMICOLON);
-            $this->checkNamespace($$); }
-    | T_NAMESPACE namespace_name '{' top_statement_list '}'
-          { $$ = Stmt\Namespace_[$2, $4];
-            $$->setAttribute('kind', Stmt\Namespace_::KIND_BRACED);
-            $this->checkNamespace($$); }
-    | T_NAMESPACE '{' top_statement_list '}'
-          { $$ = Stmt\Namespace_[null, $3];
-            $$->setAttribute('kind', Stmt\Namespace_::KIND_BRACED);
-            $this->checkNamespace($$); }
-    | T_USE use_declarations ';'                            { $$ = Stmt\Use_[$2, Stmt\Use_::TYPE_NORMAL]; }
-    | T_USE use_type use_declarations ';'                   { $$ = Stmt\Use_[$3, $2]; }
-    | group_use_declaration ';'                             { $$ = $1; }
-    | T_CONST constant_declaration_list ';'                 { $$ = Stmt\Const_[$2]; }
-;
-
-use_type:
-      T_FUNCTION                                            { $$ = Stmt\Use_::TYPE_FUNCTION; }
-    | T_CONST                                               { $$ = Stmt\Use_::TYPE_CONSTANT; }
-;
-
-group_use_declaration:
-      T_USE use_type legacy_namespace_name T_NS_SEPARATOR '{' unprefixed_use_declarations '}'
-          { $$ = Stmt\GroupUse[$3, $6, $2]; }
-    | T_USE legacy_namespace_name T_NS_SEPARATOR '{' inline_use_declarations '}'
-          { $$ = Stmt\GroupUse[$2, $5, Stmt\Use_::TYPE_UNKNOWN]; }
-;
-
-unprefixed_use_declarations:
-      unprefixed_use_declarations ',' unprefixed_use_declaration
-          { push($1, $3); }
-    | unprefixed_use_declaration                            { init($1); }
-;
-
-use_declarations:
-      use_declarations ',' use_declaration                  { push($1, $3); }
-    | use_declaration                                       { init($1); }
-;
-
-inline_use_declarations:
-      inline_use_declarations ',' inline_use_declaration    { push($1, $3); }
-    | inline_use_declaration                                { init($1); }
-;
-
-unprefixed_use_declaration:
-      namespace_name
-          { $$ = Stmt\UseUse[$1, null, Stmt\Use_::TYPE_UNKNOWN]; $this->checkUseUse($$, #1); }
-    | namespace_name T_AS identifier
-          { $$ = Stmt\UseUse[$1, $3, Stmt\Use_::TYPE_UNKNOWN]; $this->checkUseUse($$, #3); }
-;
-
-use_declaration:
-      legacy_namespace_name
-          { $$ = Stmt\UseUse[$1, null, Stmt\Use_::TYPE_UNKNOWN]; $this->checkUseUse($$, #1); }
-    | legacy_namespace_name T_AS identifier
-          { $$ = Stmt\UseUse[$1, $3, Stmt\Use_::TYPE_UNKNOWN]; $this->checkUseUse($$, #3); }
-;
-
-inline_use_declaration:
-      unprefixed_use_declaration                            { $$ = $1; $$->type = Stmt\Use_::TYPE_NORMAL; }
-    | use_type unprefixed_use_declaration                   { $$ = $2; $$->type = $1; }
-;
-
-constant_declaration_list:
-      constant_declaration_list ',' constant_declaration    { push($1, $3); }
-    | constant_declaration                                  { init($1); }
-;
-
-constant_declaration:
-    identifier '=' static_scalar                            { $$ = Node\Const_[$1, $3]; }
-;
-
-class_const_list:
-      class_const_list ',' class_const                      { push($1, $3); }
-    | class_const                                           { init($1); }
-;
-
-class_const:
-    identifier_ex '=' static_scalar                         { $$ = Node\Const_[$1, $3]; }
-;
-
-inner_statement_list_ex:
-      inner_statement_list_ex inner_statement               { pushNormalizing($1, $2); }
-    | /* empty */                                           { init(); }
-;
-
-inner_statement_list:
-      inner_statement_list_ex
-          { makeZeroLengthNop($nop, $this->lookaheadStartAttributes);
-            if ($nop !== null) { $1[] = $nop; } $$ = $1; }
-;
-
-inner_statement:
-      statement                                             { $$ = $1; }
-    | function_declaration_statement                        { $$ = $1; }
-    | class_declaration_statement                           { $$ = $1; }
-    | T_HALT_COMPILER
-          { throw new Error('__HALT_COMPILER() can only be used from the outermost scope', attributes()); }
-;
-
-non_empty_statement:
-      '{' inner_statement_list '}'
-    {
-        if ($2) {
-            $$ = $2; prependLeadingComments($$);
-        } else {
-            makeNop($$, $this->startAttributeStack[#1], $this->endAttributes);
-            if (null === $$) { $$ = array(); }
-        }
-    }
-    | T_IF parentheses_expr statement elseif_list else_single
-          { $$ = Stmt\If_[$2, ['stmts' => toArray($3), 'elseifs' => $4, 'else' => $5]]; }
-    | T_IF parentheses_expr ':' inner_statement_list new_elseif_list new_else_single T_ENDIF ';'
-          { $$ = Stmt\If_[$2, ['stmts' => $4, 'elseifs' => $5, 'else' => $6]]; }
-    | T_WHILE parentheses_expr while_statement              { $$ = Stmt\While_[$2, $3]; }
-    | T_DO statement T_WHILE parentheses_expr ';'           { $$ = Stmt\Do_   [$4, toArray($2)]; }
-    | T_FOR '(' for_expr ';'  for_expr ';' for_expr ')' for_statement
-          { $$ = Stmt\For_[['init' => $3, 'cond' => $5, 'loop' => $7, 'stmts' => $9]]; }
-    | T_SWITCH parentheses_expr switch_case_list            { $$ = Stmt\Switch_[$2, $3]; }
-    | T_BREAK ';'                                           { $$ = Stmt\Break_[null]; }
-    | T_BREAK expr ';'                                      { $$ = Stmt\Break_[$2]; }
-    | T_CONTINUE ';'                                        { $$ = Stmt\Continue_[null]; }
-    | T_CONTINUE expr ';'                                   { $$ = Stmt\Continue_[$2]; }
-    | T_RETURN ';'                                          { $$ = Stmt\Return_[null]; }
-    | T_RETURN expr ';'                                     { $$ = Stmt\Return_[$2]; }
-    | T_GLOBAL global_var_list ';'                          { $$ = Stmt\Global_[$2]; }
-    | T_STATIC static_var_list ';'                          { $$ = Stmt\Static_[$2]; }
-    | T_ECHO expr_list ';'                                  { $$ = Stmt\Echo_[$2]; }
-    | T_INLINE_HTML                                         { $$ = Stmt\InlineHTML[$1]; }
-    | yield_expr ';'                                        { $$ = Stmt\Expression[$1]; }
-    | expr ';'                                              { $$ = Stmt\Expression[$1]; }
-    | T_UNSET '(' variables_list ')' ';'                    { $$ = Stmt\Unset_[$3]; }
-    | T_FOREACH '(' expr T_AS foreach_variable ')' foreach_statement
-          { $$ = Stmt\Foreach_[$3, $5[0], ['keyVar' => null, 'byRef' => $5[1], 'stmts' => $7]]; }
-    | T_FOREACH '(' expr T_AS variable T_DOUBLE_ARROW foreach_variable ')' foreach_statement
-          { $$ = Stmt\Foreach_[$3, $7[0], ['keyVar' => $5, 'byRef' => $7[1], 'stmts' => $9]]; }
-    | T_DECLARE '(' declare_list ')' declare_statement      { $$ = Stmt\Declare_[$3, $5]; }
-    | T_TRY '{' inner_statement_list '}' catches optional_finally
-          { $$ = Stmt\TryCatch[$3, $5, $6]; $this->checkTryCatch($$); }
-    | T_THROW expr ';'                                      { $$ = Stmt\Throw_[$2]; }
-    | T_GOTO identifier ';'                                 { $$ = Stmt\Goto_[$2]; }
-    | identifier ':'                                        { $$ = Stmt\Label[$1]; }
-    | expr error                                            { $$ = Stmt\Expression[$1]; }
-    | error                                                 { $$ = array(); /* means: no statement */ }
-;
-
-statement:
-      non_empty_statement                                   { $$ = $1; }
-    | ';'
-          { makeNop($$, $this->startAttributeStack[#1], $this->endAttributes);
-            if ($$ === null) $$ = array(); /* means: no statement */ }
-;
-
-catches:
-      /* empty */                                           { init(); }
-    | catches catch                                         { push($1, $2); }
-;
-
-catch:
-    T_CATCH '(' name plain_variable ')' '{' inner_statement_list '}'
-        { $$ = Stmt\Catch_[array($3), $4, $7]; }
-;
-
-optional_finally:
-      /* empty */                                           { $$ = null; }
-    | T_FINALLY '{' inner_statement_list '}'                { $$ = Stmt\Finally_[$3]; }
-;
-
-variables_list:
-      variable                                              { init($1); }
-    | variables_list ',' variable                           { push($1, $3); }
-;
-
-optional_ref:
-      /* empty */                                           { $$ = false; }
-    | ampersand                                             { $$ = true; }
-;
-
-optional_arg_ref:
-      /* empty */                                           { $$ = false; }
-    | T_AMPERSAND_FOLLOWED_BY_VAR_OR_VARARG                 { $$ = true; }
-;
-
-optional_ellipsis:
-      /* empty */                                           { $$ = false; }
-    | T_ELLIPSIS                                            { $$ = true; }
-;
-
-function_declaration_statement:
-    T_FUNCTION optional_ref identifier '(' parameter_list ')' optional_return_type '{' inner_statement_list '}'
-        { $$ = Stmt\Function_[$3, ['byRef' => $2, 'params' => $5, 'returnType' => $7, 'stmts' => $9]]; }
-;
-
-class_declaration_statement:
-      class_entry_type identifier extends_from implements_list '{' class_statement_list '}'
-          { $$ = Stmt\Class_[$2, ['type' => $1, 'extends' => $3, 'implements' => $4, 'stmts' => $6]];
-            $this->checkClass($$, #2); }
-    | T_INTERFACE identifier interface_extends_list '{' class_statement_list '}'
-          { $$ = Stmt\Interface_[$2, ['extends' => $3, 'stmts' => $5]];
-            $this->checkInterface($$, #2); }
-    | T_TRAIT identifier '{' class_statement_list '}'
-          { $$ = Stmt\Trait_[$2, ['stmts' => $4]]; }
-;
-
-class_entry_type:
-      T_CLASS                                               { $$ = 0; }
-    | T_ABSTRACT T_CLASS                                    { $$ = Stmt\Class_::MODIFIER_ABSTRACT; }
-    | T_FINAL T_CLASS                                       { $$ = Stmt\Class_::MODIFIER_FINAL; }
-;
-
-extends_from:
-      /* empty */                                           { $$ = null; }
-    | T_EXTENDS class_name                                  { $$ = $2; }
-;
-
-interface_extends_list:
-      /* empty */                                           { $$ = array(); }
-    | T_EXTENDS class_name_list                             { $$ = $2; }
-;
-
-implements_list:
-      /* empty */                                           { $$ = array(); }
-    | T_IMPLEMENTS class_name_list                          { $$ = $2; }
-;
-
-class_name_list:
-      class_name                                            { init($1); }
-    | class_name_list ',' class_name                        { push($1, $3); }
-;
-
-for_statement:
-      statement                                             { $$ = toArray($1); }
-    | ':' inner_statement_list T_ENDFOR ';'                 { $$ = $2; }
-;
-
-foreach_statement:
-      statement                                             { $$ = toArray($1); }
-    | ':' inner_statement_list T_ENDFOREACH ';'             { $$ = $2; }
-;
-
-declare_statement:
-      non_empty_statement                                   { $$ = toArray($1); }
-    | ';'                                                   { $$ = null; }
-    | ':' inner_statement_list T_ENDDECLARE ';'             { $$ = $2; }
-;
-
-declare_list:
-      declare_list_element                                  { init($1); }
-    | declare_list ',' declare_list_element                 { push($1, $3); }
-;
-
-declare_list_element:
-      identifier '=' static_scalar                          { $$ = Stmt\DeclareDeclare[$1, $3]; }
-;
-
-switch_case_list:
-      '{' case_list '}'                                     { $$ = $2; }
-    | '{' ';' case_list '}'                                 { $$ = $3; }
-    | ':' case_list T_ENDSWITCH ';'                         { $$ = $2; }
-    | ':' ';' case_list T_ENDSWITCH ';'                     { $$ = $3; }
-;
-
-case_list:
-      /* empty */                                           { init(); }
-    | case_list case                                        { push($1, $2); }
-;
-
-case:
-      T_CASE expr case_separator inner_statement_list_ex    { $$ = Stmt\Case_[$2, $4]; }
-    | T_DEFAULT case_separator inner_statement_list_ex      { $$ = Stmt\Case_[null, $3]; }
-;
-
-case_separator:
-      ':'
-    | ';'
-;
-
-while_statement:
-      statement                                             { $$ = toArray($1); }
-    | ':' inner_statement_list T_ENDWHILE ';'               { $$ = $2; }
-;
-
-elseif_list:
-      /* empty */                                           { init(); }
-    | elseif_list elseif                                    { push($1, $2); }
-;
-
-elseif:
-      T_ELSEIF parentheses_expr statement                   { $$ = Stmt\ElseIf_[$2, toArray($3)]; }
-;
-
-new_elseif_list:
-      /* empty */                                           { init(); }
-    | new_elseif_list new_elseif                            { push($1, $2); }
-;
-
-new_elseif:
-     T_ELSEIF parentheses_expr ':' inner_statement_list     { $$ = Stmt\ElseIf_[$2, $4]; }
-;
-
-else_single:
-      /* empty */                                           { $$ = null; }
-    | T_ELSE statement                                      { $$ = Stmt\Else_[toArray($2)]; }
-;
-
-new_else_single:
-      /* empty */                                           { $$ = null; }
-    | T_ELSE ':' inner_statement_list                       { $$ = Stmt\Else_[$3]; }
-;
-
-foreach_variable:
-      variable                                              { $$ = array($1, false); }
-    | ampersand variable                                    { $$ = array($2, true); }
-    | list_expr                                             { $$ = array($1, false); }
-;
-
-parameter_list:
-      non_empty_parameter_list                              { $$ = $1; }
-    | /* empty */                                           { $$ = array(); }
-;
-
-non_empty_parameter_list:
-      parameter                                             { init($1); }
-    | non_empty_parameter_list ',' parameter                { push($1, $3); }
-;
-
-parameter:
-      optional_param_type optional_arg_ref optional_ellipsis plain_variable
-          { $$ = Node\Param[$4, null, $1, $2, $3]; $this->checkParam($$); }
-    | optional_param_type optional_arg_ref optional_ellipsis plain_variable '=' static_scalar
-          { $$ = Node\Param[$4, $6, $1, $2, $3]; $this->checkParam($$); }
-;
-
-type:
-      name                                                  { $$ = $1; }
-    | T_ARRAY                                               { $$ = Node\Identifier['array']; }
-    | T_CALLABLE                                            { $$ = Node\Identifier['callable']; }
-;
-
-optional_param_type:
-      /* empty */                                           { $$ = null; }
-    | type                                                  { $$ = $1; }
-;
-
-optional_return_type:
-      /* empty */                                           { $$ = null; }
-    | ':' type                                              { $$ = $2; }
-;
-
-argument_list:
-      '(' ')'                                               { $$ = array(); }
-    | '(' non_empty_argument_list ')'                       { $$ = $2; }
-    | '(' yield_expr ')'                                    { $$ = array(Node\Arg[$2, false, false]); }
-;
-
-non_empty_argument_list:
-      argument                                              { init($1); }
-    | non_empty_argument_list ',' argument                  { push($1, $3); }
-;
-
-argument:
-      expr                                                  { $$ = Node\Arg[$1, false, false]; }
-    | ampersand variable                                    { $$ = Node\Arg[$2, true, false]; }
-    | T_ELLIPSIS expr                                       { $$ = Node\Arg[$2, false, true]; }
-;
-
-global_var_list:
-      global_var_list ',' global_var                        { push($1, $3); }
-    | global_var                                            { init($1); }
-;
-
-global_var:
-      plain_variable                                        { $$ = $1; }
-    | '$' variable                                          { $$ = Expr\Variable[$2]; }
-    | '$' '{' expr '}'                                      { $$ = Expr\Variable[$3]; }
-;
-
-static_var_list:
-      static_var_list ',' static_var                        { push($1, $3); }
-    | static_var                                            { init($1); }
-;
-
-static_var:
-      plain_variable                                        { $$ = Stmt\StaticVar[$1, null]; }
-    | plain_variable '=' static_scalar                      { $$ = Stmt\StaticVar[$1, $3]; }
-;
-
-class_statement_list_ex:
-      class_statement_list_ex class_statement               { if ($2 !== null) { push($1, $2); } }
-    | /* empty */                                           { init(); }
-;
-
-class_statement_list:
-      class_statement_list_ex
-          { makeZeroLengthNop($nop, $this->lookaheadStartAttributes);
-            if ($nop !== null) { $1[] = $nop; } $$ = $1; }
-;
-
-class_statement:
-      variable_modifiers property_declaration_list ';'
-          { $$ = Stmt\Property[$1, $2]; $this->checkProperty($$, #1); }
-    | T_CONST class_const_list ';'                          { $$ = Stmt\ClassConst[$2, 0]; }
-    | method_modifiers T_FUNCTION optional_ref identifier_ex '(' parameter_list ')' optional_return_type method_body
-          { $$ = Stmt\ClassMethod[$4, ['type' => $1, 'byRef' => $3, 'params' => $6, 'returnType' => $8, 'stmts' => $9]];
-            $this->checkClassMethod($$, #1); }
-    | T_USE class_name_list trait_adaptations               { $$ = Stmt\TraitUse[$2, $3]; }
-;
-
-trait_adaptations:
-      ';'                                                   { $$ = array(); }
-    | '{' trait_adaptation_list '}'                         { $$ = $2; }
-;
-
-trait_adaptation_list:
-      /* empty */                                           { init(); }
-    | trait_adaptation_list trait_adaptation                { push($1, $2); }
-;
-
-trait_adaptation:
-      trait_method_reference_fully_qualified T_INSTEADOF class_name_list ';'
-          { $$ = Stmt\TraitUseAdaptation\Precedence[$1[0], $1[1], $3]; }
-    | trait_method_reference T_AS member_modifier identifier_ex ';'
-          { $$ = Stmt\TraitUseAdaptation\Alias[$1[0], $1[1], $3, $4]; }
-    | trait_method_reference T_AS member_modifier ';'
-          { $$ = Stmt\TraitUseAdaptation\Alias[$1[0], $1[1], $3, null]; }
-    | trait_method_reference T_AS identifier ';'
-          { $$ = Stmt\TraitUseAdaptation\Alias[$1[0], $1[1], null, $3]; }
-    | trait_method_reference T_AS reserved_non_modifiers_identifier ';'
-          { $$ = Stmt\TraitUseAdaptation\Alias[$1[0], $1[1], null, $3]; }
-;
-
-trait_method_reference_fully_qualified:
-      name T_PAAMAYIM_NEKUDOTAYIM identifier_ex             { $$ = array($1, $3); }
-;
-trait_method_reference:
-      trait_method_reference_fully_qualified                { $$ = $1; }
-    | identifier_ex                                         { $$ = array(null, $1); }
-;
-
-method_body:
-      ';' /* abstract method */                             { $$ = null; }
-    | '{' inner_statement_list '}'                          { $$ = $2; }
-;
-
-variable_modifiers:
-      non_empty_member_modifiers                            { $$ = $1; }
-    | T_VAR                                                 { $$ = 0; }
-;
-
-method_modifiers:
-      /* empty */                                           { $$ = 0; }
-    | non_empty_member_modifiers                            { $$ = $1; }
-;
-
-non_empty_member_modifiers:
-      member_modifier                                       { $$ = $1; }
-    | non_empty_member_modifiers member_modifier            { $this->checkModifier($1, $2, #2); $$ = $1 | $2; }
-;
-
-member_modifier:
-      T_PUBLIC                                              { $$ = Stmt\Class_::MODIFIER_PUBLIC; }
-    | T_PROTECTED                                           { $$ = Stmt\Class_::MODIFIER_PROTECTED; }
-    | T_PRIVATE                                             { $$ = Stmt\Class_::MODIFIER_PRIVATE; }
-    | T_STATIC                                              { $$ = Stmt\Class_::MODIFIER_STATIC; }
-    | T_ABSTRACT                                            { $$ = Stmt\Class_::MODIFIER_ABSTRACT; }
-    | T_FINAL                                               { $$ = Stmt\Class_::MODIFIER_FINAL; }
-;
-
-property_declaration_list:
-      property_declaration                                  { init($1); }
-    | property_declaration_list ',' property_declaration    { push($1, $3); }
-;
-
-property_decl_name:
-      T_VARIABLE                                            { $$ = Node\VarLikeIdentifier[parseVar($1)]; }
-;
-
-property_declaration:
-      property_decl_name                                    { $$ = Stmt\PropertyProperty[$1, null]; }
-    | property_decl_name '=' static_scalar                  { $$ = Stmt\PropertyProperty[$1, $3]; }
-;
-
-expr_list:
-      expr_list ',' expr                                    { push($1, $3); }
-    | expr                                                  { init($1); }
-;
-
-for_expr:
-      /* empty */                                           { $$ = array(); }
-    | expr_list                                             { $$ = $1; }
-;
-
-expr:
-      variable                                              { $$ = $1; }
-    | list_expr '=' expr                                    { $$ = Expr\Assign[$1, $3]; }
-    | variable '=' expr                                     { $$ = Expr\Assign[$1, $3]; }
-    | variable '=' ampersand variable                       { $$ = Expr\AssignRef[$1, $4]; }
-    | variable '=' ampersand new_expr                       { $$ = Expr\AssignRef[$1, $4]; }
-    | new_expr                                              { $$ = $1; }
-    | T_CLONE expr                                          { $$ = Expr\Clone_[$2]; }
-    | variable T_PLUS_EQUAL expr                            { $$ = Expr\AssignOp\Plus      [$1, $3]; }
-    | variable T_MINUS_EQUAL expr                           { $$ = Expr\AssignOp\Minus     [$1, $3]; }
-    | variable T_MUL_EQUAL expr                             { $$ = Expr\AssignOp\Mul       [$1, $3]; }
-    | variable T_DIV_EQUAL expr                             { $$ = Expr\AssignOp\Div       [$1, $3]; }
-    | variable T_CONCAT_EQUAL expr                          { $$ = Expr\AssignOp\Concat    [$1, $3]; }
-    | variable T_MOD_EQUAL expr                             { $$ = Expr\AssignOp\Mod       [$1, $3]; }
-    | variable T_AND_EQUAL expr                             { $$ = Expr\AssignOp\BitwiseAnd[$1, $3]; }
-    | variable T_OR_EQUAL expr                              { $$ = Expr\AssignOp\BitwiseOr [$1, $3]; }
-    | variable T_XOR_EQUAL expr                             { $$ = Expr\AssignOp\BitwiseXor[$1, $3]; }
-    | variable T_SL_EQUAL expr                              { $$ = Expr\AssignOp\ShiftLeft [$1, $3]; }
-    | variable T_SR_EQUAL expr                              { $$ = Expr\AssignOp\ShiftRight[$1, $3]; }
-    | variable T_POW_EQUAL expr                             { $$ = Expr\AssignOp\Pow       [$1, $3]; }
-    | variable T_COALESCE_EQUAL expr                        { $$ = Expr\AssignOp\Coalesce  [$1, $3]; }
-    | variable T_INC                                        { $$ = Expr\PostInc[$1]; }
-    | T_INC variable                                        { $$ = Expr\PreInc [$2]; }
-    | variable T_DEC                                        { $$ = Expr\PostDec[$1]; }
-    | T_DEC variable                                        { $$ = Expr\PreDec [$2]; }
-    | expr T_BOOLEAN_OR expr                                { $$ = Expr\BinaryOp\BooleanOr [$1, $3]; }
-    | expr T_BOOLEAN_AND expr                               { $$ = Expr\BinaryOp\BooleanAnd[$1, $3]; }
-    | expr T_LOGICAL_OR expr                                { $$ = Expr\BinaryOp\LogicalOr [$1, $3]; }
-    | expr T_LOGICAL_AND expr                               { $$ = Expr\BinaryOp\LogicalAnd[$1, $3]; }
-    | expr T_LOGICAL_XOR expr                               { $$ = Expr\BinaryOp\LogicalXor[$1, $3]; }
-    | expr '|' expr                                         { $$ = Expr\BinaryOp\BitwiseOr [$1, $3]; }
-    | expr T_AMPERSAND_NOT_FOLLOWED_BY_VAR_OR_VARARG expr   { $$ = Expr\BinaryOp\BitwiseAnd[$1, $3]; }
-    | expr T_AMPERSAND_FOLLOWED_BY_VAR_OR_VARARG expr       { $$ = Expr\BinaryOp\BitwiseAnd[$1, $3]; }
-    | expr '^' expr                                         { $$ = Expr\BinaryOp\BitwiseXor[$1, $3]; }
-    | expr '.' expr                                         { $$ = Expr\BinaryOp\Concat    [$1, $3]; }
-    | expr '+' expr                                         { $$ = Expr\BinaryOp\Plus      [$1, $3]; }
-    | expr '-' expr                                         { $$ = Expr\BinaryOp\Minus     [$1, $3]; }
-    | expr '*' expr                                         { $$ = Expr\BinaryOp\Mul       [$1, $3]; }
-    | expr '/' expr                                         { $$ = Expr\BinaryOp\Div       [$1, $3]; }
-    | expr '%' expr                                         { $$ = Expr\BinaryOp\Mod       [$1, $3]; }
-    | expr T_SL expr                                        { $$ = Expr\BinaryOp\ShiftLeft [$1, $3]; }
-    | expr T_SR expr                                        { $$ = Expr\BinaryOp\ShiftRight[$1, $3]; }
-    | expr T_POW expr                                       { $$ = Expr\BinaryOp\Pow       [$1, $3]; }
-    | '+' expr %prec T_INC                                  { $$ = Expr\UnaryPlus [$2]; }
-    | '-' expr %prec T_INC                                  { $$ = Expr\UnaryMinus[$2]; }
-    | '!' expr                                              { $$ = Expr\BooleanNot[$2]; }
-    | '~' expr                                              { $$ = Expr\BitwiseNot[$2]; }
-    | expr T_IS_IDENTICAL expr                              { $$ = Expr\BinaryOp\Identical     [$1, $3]; }
-    | expr T_IS_NOT_IDENTICAL expr                          { $$ = Expr\BinaryOp\NotIdentical  [$1, $3]; }
-    | expr T_IS_EQUAL expr                                  { $$ = Expr\BinaryOp\Equal         [$1, $3]; }
-    | expr T_IS_NOT_EQUAL expr                              { $$ = Expr\BinaryOp\NotEqual      [$1, $3]; }
-    | expr T_SPACESHIP expr                                 { $$ = Expr\BinaryOp\Spaceship     [$1, $3]; }
-    | expr '<' expr                                         { $$ = Expr\BinaryOp\Smaller       [$1, $3]; }
-    | expr T_IS_SMALLER_OR_EQUAL expr                       { $$ = Expr\BinaryOp\SmallerOrEqual[$1, $3]; }
-    | expr '>' expr                                         { $$ = Expr\BinaryOp\Greater       [$1, $3]; }
-    | expr T_IS_GREATER_OR_EQUAL expr                       { $$ = Expr\BinaryOp\GreaterOrEqual[$1, $3]; }
-    | expr T_INSTANCEOF class_name_reference                { $$ = Expr\Instanceof_[$1, $3]; }
-    | parentheses_expr                                      { $$ = $1; }
-    /* we need a separate '(' new_expr ')' rule to avoid problems caused by a s/r conflict */
-    | '(' new_expr ')'                                      { $$ = $2; }
-    | expr '?' expr ':' expr                                { $$ = Expr\Ternary[$1, $3,   $5]; }
-    | expr '?' ':' expr                                     { $$ = Expr\Ternary[$1, null, $4]; }
-    | expr T_COALESCE expr                                  { $$ = Expr\BinaryOp\Coalesce[$1, $3]; }
-    | T_ISSET '(' variables_list ')'                        { $$ = Expr\Isset_[$3]; }
-    | T_EMPTY '(' expr ')'                                  { $$ = Expr\Empty_[$3]; }
-    | T_INCLUDE expr                                        { $$ = Expr\Include_[$2, Expr\Include_::TYPE_INCLUDE]; }
-    | T_INCLUDE_ONCE expr                                   { $$ = Expr\Include_[$2, Expr\Include_::TYPE_INCLUDE_ONCE]; }
-    | T_EVAL parentheses_expr                               { $$ = Expr\Eval_[$2]; }
-    | T_REQUIRE expr                                        { $$ = Expr\Include_[$2, Expr\Include_::TYPE_REQUIRE]; }
-    | T_REQUIRE_ONCE expr                                   { $$ = Expr\Include_[$2, Expr\Include_::TYPE_REQUIRE_ONCE]; }
-    | T_INT_CAST expr                                       { $$ = Expr\Cast\Int_    [$2]; }
-    | T_DOUBLE_CAST expr
-          { $attrs = attributes();
-            $attrs['kind'] = $this->getFloatCastKind($1);
-            $$ = new Expr\Cast\Double($2, $attrs); }
-    | T_STRING_CAST expr                                    { $$ = Expr\Cast\String_ [$2]; }
-    | T_ARRAY_CAST expr                                     { $$ = Expr\Cast\Array_  [$2]; }
-    | T_OBJECT_CAST expr                                    { $$ = Expr\Cast\Object_ [$2]; }
-    | T_BOOL_CAST expr                                      { $$ = Expr\Cast\Bool_   [$2]; }
-    | T_UNSET_CAST expr                                     { $$ = Expr\Cast\Unset_  [$2]; }
-    | T_EXIT exit_expr
-          { $attrs = attributes();
-            $attrs['kind'] = strtolower($1) === 'exit' ? Expr\Exit_::KIND_EXIT : Expr\Exit_::KIND_DIE;
-            $$ = new Expr\Exit_($2, $attrs); }
-    | '@' expr                                              { $$ = Expr\ErrorSuppress[$2]; }
-    | scalar                                                { $$ = $1; }
-    | array_expr                                            { $$ = $1; }
-    | scalar_dereference                                    { $$ = $1; }
-    | '`' backticks_expr '`'                                { $$ = Expr\ShellExec[$2]; }
-    | T_PRINT expr                                          { $$ = Expr\Print_[$2]; }
-    | T_YIELD                                               { $$ = Expr\Yield_[null, null]; }
-    | T_YIELD_FROM expr                                     { $$ = Expr\YieldFrom[$2]; }
-    | T_FUNCTION optional_ref '(' parameter_list ')' lexical_vars optional_return_type
-      '{' inner_statement_list '}'
-          { $$ = Expr\Closure[['static' => false, 'byRef' => $2, 'params' => $4, 'uses' => $6, 'returnType' => $7, 'stmts' => $9]]; }
-    | T_STATIC T_FUNCTION optional_ref '(' parameter_list ')' lexical_vars optional_return_type
-      '{' inner_statement_list '}'
-          { $$ = Expr\Closure[['static' => true, 'byRef' => $3, 'params' => $5, 'uses' => $7, 'returnType' => $8, 'stmts' => $10]]; }
-;
-
-parentheses_expr:
-      '(' expr ')'                                          { $$ = $2; }
-    | '(' yield_expr ')'                                    { $$ = $2; }
-;
-
-yield_expr:
-      T_YIELD expr                                          { $$ = Expr\Yield_[$2, null]; }
-    | T_YIELD expr T_DOUBLE_ARROW expr                      { $$ = Expr\Yield_[$4, $2]; }
-;
-
-array_expr:
-      T_ARRAY '(' array_pair_list ')'
-          { $attrs = attributes(); $attrs['kind'] = Expr\Array_::KIND_LONG;
-            $$ = new Expr\Array_($3, $attrs); }
-    | '[' array_pair_list ']'
-          { $attrs = attributes(); $attrs['kind'] = Expr\Array_::KIND_SHORT;
-            $$ = new Expr\Array_($2, $attrs); }
-;
-
-scalar_dereference:
-      array_expr '[' dim_offset ']'                         { $$ = Expr\ArrayDimFetch[$1, $3]; }
-    | T_CONSTANT_ENCAPSED_STRING '[' dim_offset ']'         { $$ = Expr\ArrayDimFetch[Scalar\String_::fromString($1, attributes()), $3]; }
-    | constant '[' dim_offset ']'                           { $$ = Expr\ArrayDimFetch[$1, $3]; }
-    | scalar_dereference '[' dim_offset ']'                 { $$ = Expr\ArrayDimFetch[$1, $3]; }
-    /* alternative array syntax missing intentionally */
-;
-
-anonymous_class:
-      T_CLASS ctor_arguments extends_from implements_list '{' class_statement_list '}'
-          { $$ = array(Stmt\Class_[null, ['type' => 0, 'extends' => $3, 'implements' => $4, 'stmts' => $6]], $2);
-            $this->checkClass($$[0], -1); }
-;
-
-new_expr:
-      T_NEW class_name_reference ctor_arguments             { $$ = Expr\New_[$2, $3]; }
-    | T_NEW anonymous_class
-          { list($class, $ctorArgs) = $2; $$ = Expr\New_[$class, $ctorArgs]; }
-;
-
-lexical_vars:
-      /* empty */                                           { $$ = array(); }
-    | T_USE '(' lexical_var_list ')'                        { $$ = $3; }
-;
-
-lexical_var_list:
-      lexical_var                                           { init($1); }
-    | lexical_var_list ',' lexical_var                      { push($1, $3); }
-;
-
-lexical_var:
-      optional_ref plain_variable                           { $$ = Expr\ClosureUse[$2, $1]; }
-;
-
-function_call:
-      name argument_list                                    { $$ = Expr\FuncCall[$1, $2]; }
-    | class_name_or_var T_PAAMAYIM_NEKUDOTAYIM identifier_ex argument_list
-          { $$ = Expr\StaticCall[$1, $3, $4]; }
-    | class_name_or_var T_PAAMAYIM_NEKUDOTAYIM '{' expr '}' argument_list
-          { $$ = Expr\StaticCall[$1, $4, $6]; }
-    | static_property argument_list
-          { $$ = $this->fixupPhp5StaticPropCall($1, $2, attributes()); }
-    | variable_without_objects argument_list
-          { $$ = Expr\FuncCall[$1, $2]; }
-    | function_call '[' dim_offset ']'                      { $$ = Expr\ArrayDimFetch[$1, $3]; }
-      /* alternative array syntax missing intentionally */
-;
-
-class_name:
-      T_STATIC                                              { $$ = Name[$1]; }
-    | name                                                  { $$ = $1; }
-;
-
-name:
-      T_STRING                                              { $$ = Name[$1]; }
-    | T_NAME_QUALIFIED                                      { $$ = Name[$1]; }
-    | T_NAME_FULLY_QUALIFIED                                { $$ = Name\FullyQualified[substr($1, 1)]; }
-    | T_NAME_RELATIVE                                       { $$ = Name\Relative[substr($1, 10)]; }
-;
-
-class_name_reference:
-      class_name                                            { $$ = $1; }
-    | dynamic_class_name_reference                          { $$ = $1; }
-;
-
-dynamic_class_name_reference:
-      object_access_for_dcnr                                { $$ = $1; }
-    | base_variable                                         { $$ = $1; }
-;
-
-class_name_or_var:
-      class_name                                            { $$ = $1; }
-    | reference_variable                                    { $$ = $1; }
-;
-
-object_access_for_dcnr:
-      base_variable T_OBJECT_OPERATOR object_property
-          { $$ = Expr\PropertyFetch[$1, $3]; }
-    | object_access_for_dcnr T_OBJECT_OPERATOR object_property
-          { $$ = Expr\PropertyFetch[$1, $3]; }
-    | object_access_for_dcnr '[' dim_offset ']'             { $$ = Expr\ArrayDimFetch[$1, $3]; }
-    | object_access_for_dcnr '{' expr '}'                   { $$ = Expr\ArrayDimFetch[$1, $3]; }
-;
-
-exit_expr:
-      /* empty */                                           { $$ = null; }
-    | '(' ')'                                               { $$ = null; }
-    | parentheses_expr                                      { $$ = $1; }
-;
-
-backticks_expr:
-      /* empty */                                           { $$ = array(); }
-    | T_ENCAPSED_AND_WHITESPACE
-          { $$ = array(Scalar\EncapsedStringPart[Scalar\String_::parseEscapeSequences($1, '`', false)]); }
-    | encaps_list                                           { parseEncapsed($1, '`', false); $$ = $1; }
-;
-
-ctor_arguments:
-      /* empty */                                           { $$ = array(); }
-    | argument_list                                         { $$ = $1; }
-;
-
-common_scalar:
-      T_LNUMBER                                             { $$ = $this->parseLNumber($1, attributes(), true); }
-    | T_DNUMBER                                             { $$ = Scalar\DNumber::fromString($1, attributes()); }
-    | T_CONSTANT_ENCAPSED_STRING                            { $$ = Scalar\String_::fromString($1, attributes(), false); }
-    | T_LINE                                                { $$ = Scalar\MagicConst\Line[]; }
-    | T_FILE                                                { $$ = Scalar\MagicConst\File[]; }
-    | T_DIR                                                 { $$ = Scalar\MagicConst\Dir[]; }
-    | T_CLASS_C                                             { $$ = Scalar\MagicConst\Class_[]; }
-    | T_TRAIT_C                                             { $$ = Scalar\MagicConst\Trait_[]; }
-    | T_METHOD_C                                            { $$ = Scalar\MagicConst\Method[]; }
-    | T_FUNC_C                                              { $$ = Scalar\MagicConst\Function_[]; }
-    | T_NS_C                                                { $$ = Scalar\MagicConst\Namespace_[]; }
-    | T_START_HEREDOC T_ENCAPSED_AND_WHITESPACE T_END_HEREDOC
-          { $$ = $this->parseDocString($1, $2, $3, attributes(), stackAttributes(#3), false); }
-    | T_START_HEREDOC T_END_HEREDOC
-          { $$ = $this->parseDocString($1, '', $2, attributes(), stackAttributes(#2), false); }
-;
-
-static_scalar:
-      common_scalar                                         { $$ = $1; }
-    | class_name T_PAAMAYIM_NEKUDOTAYIM identifier_ex       { $$ = Expr\ClassConstFetch[$1, $3]; }
-    | name                                                  { $$ = Expr\ConstFetch[$1]; }
-    | T_ARRAY '(' static_array_pair_list ')'                { $$ = Expr\Array_[$3]; }
-    | '[' static_array_pair_list ']'                        { $$ = Expr\Array_[$2]; }
-    | static_operation                                      { $$ = $1; }
-;
-
-static_operation:
-      static_scalar T_BOOLEAN_OR static_scalar              { $$ = Expr\BinaryOp\BooleanOr [$1, $3]; }
-    | static_scalar T_BOOLEAN_AND static_scalar             { $$ = Expr\BinaryOp\BooleanAnd[$1, $3]; }
-    | static_scalar T_LOGICAL_OR static_scalar              { $$ = Expr\BinaryOp\LogicalOr [$1, $3]; }
-    | static_scalar T_LOGICAL_AND static_scalar             { $$ = Expr\BinaryOp\LogicalAnd[$1, $3]; }
-    | static_scalar T_LOGICAL_XOR static_scalar             { $$ = Expr\BinaryOp\LogicalXor[$1, $3]; }
-    | static_scalar '|' static_scalar                       { $$ = Expr\BinaryOp\BitwiseOr [$1, $3]; }
-    | static_scalar T_AMPERSAND_NOT_FOLLOWED_BY_VAR_OR_VARARG static_scalar
-          { $$ = Expr\BinaryOp\BitwiseAnd[$1, $3]; }
-    | static_scalar T_AMPERSAND_FOLLOWED_BY_VAR_OR_VARARG static_scalar
-          { $$ = Expr\BinaryOp\BitwiseAnd[$1, $3]; }
-    | static_scalar '^' static_scalar                       { $$ = Expr\BinaryOp\BitwiseXor[$1, $3]; }
-    | static_scalar '.' static_scalar                       { $$ = Expr\BinaryOp\Concat    [$1, $3]; }
-    | static_scalar '+' static_scalar                       { $$ = Expr\BinaryOp\Plus      [$1, $3]; }
-    | static_scalar '-' static_scalar                       { $$ = Expr\BinaryOp\Minus     [$1, $3]; }
-    | static_scalar '*' static_scalar                       { $$ = Expr\BinaryOp\Mul       [$1, $3]; }
-    | static_scalar '/' static_scalar                       { $$ = Expr\BinaryOp\Div       [$1, $3]; }
-    | static_scalar '%' static_scalar                       { $$ = Expr\BinaryOp\Mod       [$1, $3]; }
-    | static_scalar T_SL static_scalar                      { $$ = Expr\BinaryOp\ShiftLeft [$1, $3]; }
-    | static_scalar T_SR static_scalar                      { $$ = Expr\BinaryOp\ShiftRight[$1, $3]; }
-    | static_scalar T_POW static_scalar                     { $$ = Expr\BinaryOp\Pow       [$1, $3]; }
-    | '+' static_scalar %prec T_INC                         { $$ = Expr\UnaryPlus [$2]; }
-    | '-' static_scalar %prec T_INC                         { $$ = Expr\UnaryMinus[$2]; }
-    | '!' static_scalar                                     { $$ = Expr\BooleanNot[$2]; }
-    | '~' static_scalar                                     { $$ = Expr\BitwiseNot[$2]; }
-    | static_scalar T_IS_IDENTICAL static_scalar            { $$ = Expr\BinaryOp\Identical     [$1, $3]; }
-    | static_scalar T_IS_NOT_IDENTICAL static_scalar        { $$ = Expr\BinaryOp\NotIdentical  [$1, $3]; }
-    | static_scalar T_IS_EQUAL static_scalar                { $$ = Expr\BinaryOp\Equal         [$1, $3]; }
-    | static_scalar T_IS_NOT_EQUAL static_scalar            { $$ = Expr\BinaryOp\NotEqual      [$1, $3]; }
-    | static_scalar '<' static_scalar                       { $$ = Expr\BinaryOp\Smaller       [$1, $3]; }
-    | static_scalar T_IS_SMALLER_OR_EQUAL static_scalar     { $$ = Expr\BinaryOp\SmallerOrEqual[$1, $3]; }
-    | static_scalar '>' static_scalar                       { $$ = Expr\BinaryOp\Greater       [$1, $3]; }
-    | static_scalar T_IS_GREATER_OR_EQUAL static_scalar     { $$ = Expr\BinaryOp\GreaterOrEqual[$1, $3]; }
-    | static_scalar '?' static_scalar ':' static_scalar     { $$ = Expr\Ternary[$1, $3,   $5]; }
-    | static_scalar '?' ':' static_scalar                   { $$ = Expr\Ternary[$1, null, $4]; }
-    | static_scalar '[' static_scalar ']'                   { $$ = Expr\ArrayDimFetch[$1, $3]; }
-    | '(' static_scalar ')'                                 { $$ = $2; }
-;
-
-constant:
-      name                                                  { $$ = Expr\ConstFetch[$1]; }
-    | class_name_or_var T_PAAMAYIM_NEKUDOTAYIM identifier_ex
-          { $$ = Expr\ClassConstFetch[$1, $3]; }
-;
-
-scalar:
-      common_scalar                                         { $$ = $1; }
-    | constant                                              { $$ = $1; }
-    | '"' encaps_list '"'
-          { $attrs = attributes(); $attrs['kind'] = Scalar\String_::KIND_DOUBLE_QUOTED;
-            parseEncapsed($2, '"', true); $$ = new Scalar\Encapsed($2, $attrs); }
-    | T_START_HEREDOC encaps_list T_END_HEREDOC
-          { $$ = $this->parseDocString($1, $2, $3, attributes(), stackAttributes(#3), true); }
-;
-
-static_array_pair_list:
-      /* empty */                                           { $$ = array(); }
-    | non_empty_static_array_pair_list optional_comma       { $$ = $1; }
-;
-
-optional_comma:
-      /* empty */
-    | ','
-;
-
-non_empty_static_array_pair_list:
-      non_empty_static_array_pair_list ',' static_array_pair { push($1, $3); }
-    | static_array_pair                                      { init($1); }
-;
-
-static_array_pair:
-      static_scalar T_DOUBLE_ARROW static_scalar            { $$ = Expr\ArrayItem[$3, $1,   false]; }
-    | static_scalar                                         { $$ = Expr\ArrayItem[$1, null, false]; }
-;
-
-variable:
-      object_access                                         { $$ = $1; }
-    | base_variable                                         { $$ = $1; }
-    | function_call                                         { $$ = $1; }
-    | new_expr_array_deref                                  { $$ = $1; }
-;
-
-new_expr_array_deref:
-      '(' new_expr ')' '[' dim_offset ']'                   { $$ = Expr\ArrayDimFetch[$2, $5]; }
-    | new_expr_array_deref '[' dim_offset ']'               { $$ = Expr\ArrayDimFetch[$1, $3]; }
-      /* alternative array syntax missing intentionally */
-;
-
-object_access:
-      variable_or_new_expr T_OBJECT_OPERATOR object_property
-          { $$ = Expr\PropertyFetch[$1, $3]; }
-    | variable_or_new_expr T_OBJECT_OPERATOR object_property argument_list
-          { $$ = Expr\MethodCall[$1, $3, $4]; }
-    | object_access argument_list                           { $$ = Expr\FuncCall[$1, $2]; }
-    | object_access '[' dim_offset ']'                      { $$ = Expr\ArrayDimFetch[$1, $3]; }
-    | object_access '{' expr '}'                            { $$ = Expr\ArrayDimFetch[$1, $3]; }
-;
-
-variable_or_new_expr:
-      variable                                              { $$ = $1; }
-    | '(' new_expr ')'                                      { $$ = $2; }
-;
-
-variable_without_objects:
-      reference_variable                                    { $$ = $1; }
-    | '$' variable_without_objects                          { $$ = Expr\Variable[$2]; }
-;
-
-base_variable:
-      variable_without_objects                              { $$ = $1; }
-    | static_property                                       { $$ = $1; }
-;
-
-static_property:
-      class_name_or_var T_PAAMAYIM_NEKUDOTAYIM '$' reference_variable
-          { $$ = Expr\StaticPropertyFetch[$1, $4]; }
-    | static_property_with_arrays                           { $$ = $1; }
-;
-
-static_property_simple_name:
-      T_VARIABLE
-          { $var = parseVar($1); $$ = \is_string($var) ? Node\VarLikeIdentifier[$var] : $var; }
-;
-
-static_property_with_arrays:
-      class_name_or_var T_PAAMAYIM_NEKUDOTAYIM static_property_simple_name
-          { $$ = Expr\StaticPropertyFetch[$1, $3]; }
-    | class_name_or_var T_PAAMAYIM_NEKUDOTAYIM '$' '{' expr '}'
-          { $$ = Expr\StaticPropertyFetch[$1, $5]; }
-    | static_property_with_arrays '[' dim_offset ']'        { $$ = Expr\ArrayDimFetch[$1, $3]; }
-    | static_property_with_arrays '{' expr '}'              { $$ = Expr\ArrayDimFetch[$1, $3]; }
-;
-
-reference_variable:
-      reference_variable '[' dim_offset ']'                 { $$ = Expr\ArrayDimFetch[$1, $3]; }
-    | reference_variable '{' expr '}'                       { $$ = Expr\ArrayDimFetch[$1, $3]; }
-    | plain_variable                                        { $$ = $1; }
-    | '$' '{' expr '}'                                      { $$ = Expr\Variable[$3]; }
-;
-
-dim_offset:
-      /* empty */                                           { $$ = null; }
-    | expr                                                  { $$ = $1; }
-;
-
-object_property:
-      identifier                                            { $$ = $1; }
-    | '{' expr '}'                                          { $$ = $2; }
-    | variable_without_objects                              { $$ = $1; }
-    | error                                                 { $$ = Expr\Error[]; $this->errorState = 2; }
-;
-
-list_expr:
-      T_LIST '(' list_expr_elements ')'                     { $$ = Expr\List_[$3]; }
-;
-
-list_expr_elements:
-      list_expr_elements ',' list_expr_element              { push($1, $3); }
-    | list_expr_element                                     { init($1); }
-;
-
-list_expr_element:
-      variable                                              { $$ = Expr\ArrayItem[$1, null, false]; }
-    | list_expr                                             { $$ = Expr\ArrayItem[$1, null, false]; }
-    | /* empty */                                           { $$ = null; }
-;
-
-array_pair_list:
-      /* empty */                                           { $$ = array(); }
-    | non_empty_array_pair_list optional_comma              { $$ = $1; }
-;
-
-non_empty_array_pair_list:
-      non_empty_array_pair_list ',' array_pair              { push($1, $3); }
-    | array_pair                                            { init($1); }
-;
-
-array_pair:
-      expr T_DOUBLE_ARROW expr                              { $$ = Expr\ArrayItem[$3, $1,   false]; }
-    | expr                                                  { $$ = Expr\ArrayItem[$1, null, false]; }
-    | expr T_DOUBLE_ARROW ampersand variable                { $$ = Expr\ArrayItem[$4, $1,   true]; }
-    | ampersand variable                                    { $$ = Expr\ArrayItem[$2, null, true]; }
-    | T_ELLIPSIS expr                                       { $$ = Expr\ArrayItem[$2, null, false, attributes(), true]; }
-;
-
-encaps_list:
-      encaps_list encaps_var                                { push($1, $2); }
-    | encaps_list encaps_string_part                        { push($1, $2); }
-    | encaps_var                                            { init($1); }
-    | encaps_string_part encaps_var                         { init($1, $2); }
-;
-
-encaps_string_part:
-      T_ENCAPSED_AND_WHITESPACE                             { $$ = Scalar\EncapsedStringPart[$1]; }
-;
-
-encaps_str_varname:
-      T_STRING_VARNAME                                      { $$ = Expr\Variable[$1]; }
-;
-
-encaps_var:
-      plain_variable                                        { $$ = $1; }
-    | plain_variable '[' encaps_var_offset ']'              { $$ = Expr\ArrayDimFetch[$1, $3]; }
-    | plain_variable T_OBJECT_OPERATOR identifier           { $$ = Expr\PropertyFetch[$1, $3]; }
-    | T_DOLLAR_OPEN_CURLY_BRACES expr '}'                   { $$ = Expr\Variable[$2]; }
-    | T_DOLLAR_OPEN_CURLY_BRACES T_STRING_VARNAME '}'       { $$ = Expr\Variable[$2]; }
-    | T_DOLLAR_OPEN_CURLY_BRACES encaps_str_varname '[' expr ']' '}'
-          { $$ = Expr\ArrayDimFetch[$2, $4]; }
-    | T_CURLY_OPEN variable '}'                             { $$ = $2; }
-;
-
-encaps_var_offset:
-      T_STRING                                              { $$ = Scalar\String_[$1]; }
-    | T_NUM_STRING                                          { $$ = $this->parseNumString($1, attributes()); }
-    | plain_variable                                        { $$ = $1; }
-;
-
-%%
diff --git a/vendor/nikic/php-parser/grammar/php7.y b/vendor/nikic/php-parser/grammar/php7.y
deleted file mode 100644
index 087bc7392..000000000
--- a/vendor/nikic/php-parser/grammar/php7.y
+++ /dev/null
@@ -1,1204 +0,0 @@
-%pure_parser
-%expect 2
-
-%tokens
-
-%%
-
-start:
-    top_statement_list                                      { $$ = $this->handleNamespaces($1); }
-;
-
-top_statement_list_ex:
-      top_statement_list_ex top_statement                   { pushNormalizing($1, $2); }
-    | /* empty */                                           { init(); }
-;
-
-top_statement_list:
-      top_statement_list_ex
-          { makeZeroLengthNop($nop, $this->lookaheadStartAttributes);
-            if ($nop !== null) { $1[] = $nop; } $$ = $1; }
-;
-
-ampersand:
-      T_AMPERSAND_FOLLOWED_BY_VAR_OR_VARARG
-    | T_AMPERSAND_NOT_FOLLOWED_BY_VAR_OR_VARARG
-;
-
-reserved_non_modifiers:
-      T_INCLUDE | T_INCLUDE_ONCE | T_EVAL | T_REQUIRE | T_REQUIRE_ONCE | T_LOGICAL_OR | T_LOGICAL_XOR | T_LOGICAL_AND
-    | T_INSTANCEOF | T_NEW | T_CLONE | T_EXIT | T_IF | T_ELSEIF | T_ELSE | T_ENDIF | T_ECHO | T_DO | T_WHILE
-    | T_ENDWHILE | T_FOR | T_ENDFOR | T_FOREACH | T_ENDFOREACH | T_DECLARE | T_ENDDECLARE | T_AS | T_TRY | T_CATCH
-    | T_FINALLY | T_THROW | T_USE | T_INSTEADOF | T_GLOBAL | T_VAR | T_UNSET | T_ISSET | T_EMPTY | T_CONTINUE | T_GOTO
-    | T_FUNCTION | T_CONST | T_RETURN | T_PRINT | T_YIELD | T_LIST | T_SWITCH | T_ENDSWITCH | T_CASE | T_DEFAULT
-    | T_BREAK | T_ARRAY | T_CALLABLE | T_EXTENDS | T_IMPLEMENTS | T_NAMESPACE | T_TRAIT | T_INTERFACE | T_CLASS
-    | T_CLASS_C | T_TRAIT_C | T_FUNC_C | T_METHOD_C | T_LINE | T_FILE | T_DIR | T_NS_C | T_HALT_COMPILER | T_FN
-    | T_MATCH | T_ENUM
-;
-
-semi_reserved:
-      reserved_non_modifiers
-    | T_STATIC | T_ABSTRACT | T_FINAL | T_PRIVATE | T_PROTECTED | T_PUBLIC | T_READONLY
-;
-
-identifier_maybe_reserved:
-      T_STRING                                              { $$ = Node\Identifier[$1]; }
-    | semi_reserved                                         { $$ = Node\Identifier[$1]; }
-;
-
-identifier_not_reserved:
-      T_STRING                                              { $$ = Node\Identifier[$1]; }
-;
-
-reserved_non_modifiers_identifier:
-      reserved_non_modifiers                                { $$ = Node\Identifier[$1]; }
-;
-
-namespace_declaration_name:
-      T_STRING                                              { $$ = Name[$1]; }
-    | semi_reserved                                         { $$ = Name[$1]; }
-    | T_NAME_QUALIFIED                                      { $$ = Name[$1]; }
-;
-
-namespace_name:
-      T_STRING                                              { $$ = Name[$1]; }
-    | T_NAME_QUALIFIED                                      { $$ = Name[$1]; }
-;
-
-legacy_namespace_name:
-      namespace_name                                        { $$ = $1; }
-    | T_NAME_FULLY_QUALIFIED                                { $$ = Name[substr($1, 1)]; }
-;
-
-plain_variable:
-      T_VARIABLE                                            { $$ = Expr\Variable[parseVar($1)]; }
-;
-
-semi:
-      ';'                                                   { /* nothing */ }
-    | error                                                 { /* nothing */ }
-;
-
-no_comma:
-      /* empty */ { /* nothing */ }
-    | ',' { $this->emitError(new Error('A trailing comma is not allowed here', attributes())); }
-;
-
-optional_comma:
-      /* empty */
-    | ','
-;
-
-attribute_decl:
-      class_name                                            { $$ = Node\Attribute[$1, []]; }
-    | class_name argument_list                              { $$ = Node\Attribute[$1, $2]; }
-;
-
-attribute_group:
-      attribute_decl                                        { init($1); }
-    | attribute_group ',' attribute_decl                    { push($1, $3); }
-;
-
-attribute:
-      T_ATTRIBUTE attribute_group optional_comma ']'        { $$ = Node\AttributeGroup[$2]; }
-;
-
-attributes:
-      attribute                                             { init($1); }
-    | attributes attribute                                  { push($1, $2); }
-;
-
-optional_attributes:
-      /* empty */                                           { $$ = []; }
-    | attributes                                            { $$ = $1; }
-;
-
-top_statement:
-      statement                                             { $$ = $1; }
-    | function_declaration_statement                        { $$ = $1; }
-    | class_declaration_statement                           { $$ = $1; }
-    | T_HALT_COMPILER
-          { $$ = Stmt\HaltCompiler[$this->lexer->handleHaltCompiler()]; }
-    | T_NAMESPACE namespace_declaration_name semi
-          { $$ = Stmt\Namespace_[$2, null];
-            $$->setAttribute('kind', Stmt\Namespace_::KIND_SEMICOLON);
-            $this->checkNamespace($$); }
-    | T_NAMESPACE namespace_declaration_name '{' top_statement_list '}'
-          { $$ = Stmt\Namespace_[$2, $4];
-            $$->setAttribute('kind', Stmt\Namespace_::KIND_BRACED);
-            $this->checkNamespace($$); }
-    | T_NAMESPACE '{' top_statement_list '}'
-          { $$ = Stmt\Namespace_[null, $3];
-            $$->setAttribute('kind', Stmt\Namespace_::KIND_BRACED);
-            $this->checkNamespace($$); }
-    | T_USE use_declarations semi                           { $$ = Stmt\Use_[$2, Stmt\Use_::TYPE_NORMAL]; }
-    | T_USE use_type use_declarations semi                  { $$ = Stmt\Use_[$3, $2]; }
-    | group_use_declaration semi                            { $$ = $1; }
-    | T_CONST constant_declaration_list semi                { $$ = Stmt\Const_[$2]; }
-;
-
-use_type:
-      T_FUNCTION                                            { $$ = Stmt\Use_::TYPE_FUNCTION; }
-    | T_CONST                                               { $$ = Stmt\Use_::TYPE_CONSTANT; }
-;
-
-group_use_declaration:
-      T_USE use_type legacy_namespace_name T_NS_SEPARATOR '{' unprefixed_use_declarations '}'
-          { $$ = Stmt\GroupUse[$3, $6, $2]; }
-    | T_USE legacy_namespace_name T_NS_SEPARATOR '{' inline_use_declarations '}'
-          { $$ = Stmt\GroupUse[$2, $5, Stmt\Use_::TYPE_UNKNOWN]; }
-;
-
-unprefixed_use_declarations:
-      non_empty_unprefixed_use_declarations optional_comma  { $$ = $1; }
-;
-
-non_empty_unprefixed_use_declarations:
-      non_empty_unprefixed_use_declarations ',' unprefixed_use_declaration
-          { push($1, $3); }
-    | unprefixed_use_declaration                            { init($1); }
-;
-
-use_declarations:
-      non_empty_use_declarations no_comma                   { $$ = $1; }
-;
-
-non_empty_use_declarations:
-      non_empty_use_declarations ',' use_declaration        { push($1, $3); }
-    | use_declaration                                       { init($1); }
-;
-
-inline_use_declarations:
-      non_empty_inline_use_declarations optional_comma      { $$ = $1; }
-;
-
-non_empty_inline_use_declarations:
-      non_empty_inline_use_declarations ',' inline_use_declaration
-          { push($1, $3); }
-    | inline_use_declaration                                { init($1); }
-;
-
-unprefixed_use_declaration:
-      namespace_name
-          { $$ = Stmt\UseUse[$1, null, Stmt\Use_::TYPE_UNKNOWN]; $this->checkUseUse($$, #1); }
-    | namespace_name T_AS identifier_not_reserved
-          { $$ = Stmt\UseUse[$1, $3, Stmt\Use_::TYPE_UNKNOWN]; $this->checkUseUse($$, #3); }
-;
-
-use_declaration:
-      legacy_namespace_name
-          { $$ = Stmt\UseUse[$1, null, Stmt\Use_::TYPE_UNKNOWN]; $this->checkUseUse($$, #1); }
-    | legacy_namespace_name T_AS identifier_not_reserved
-          { $$ = Stmt\UseUse[$1, $3, Stmt\Use_::TYPE_UNKNOWN]; $this->checkUseUse($$, #3); }
-;
-
-inline_use_declaration:
-      unprefixed_use_declaration                            { $$ = $1; $$->type = Stmt\Use_::TYPE_NORMAL; }
-    | use_type unprefixed_use_declaration                   { $$ = $2; $$->type = $1; }
-;
-
-constant_declaration_list:
-      non_empty_constant_declaration_list no_comma          { $$ = $1; }
-;
-
-non_empty_constant_declaration_list:
-      non_empty_constant_declaration_list ',' constant_declaration
-          { push($1, $3); }
-    | constant_declaration                                  { init($1); }
-;
-
-constant_declaration:
-    identifier_not_reserved '=' expr                        { $$ = Node\Const_[$1, $3]; }
-;
-
-class_const_list:
-      non_empty_class_const_list no_comma                   { $$ = $1; }
-;
-
-non_empty_class_const_list:
-      non_empty_class_const_list ',' class_const            { push($1, $3); }
-    | class_const                                           { init($1); }
-;
-
-class_const:
-    identifier_maybe_reserved '=' expr                      { $$ = Node\Const_[$1, $3]; }
-;
-
-inner_statement_list_ex:
-      inner_statement_list_ex inner_statement               { pushNormalizing($1, $2); }
-    | /* empty */                                           { init(); }
-;
-
-inner_statement_list:
-      inner_statement_list_ex
-          { makeZeroLengthNop($nop, $this->lookaheadStartAttributes);
-            if ($nop !== null) { $1[] = $nop; } $$ = $1; }
-;
-
-inner_statement:
-      statement                                             { $$ = $1; }
-    | function_declaration_statement                        { $$ = $1; }
-    | class_declaration_statement                           { $$ = $1; }
-    | T_HALT_COMPILER
-          { throw new Error('__HALT_COMPILER() can only be used from the outermost scope', attributes()); }
-;
-
-non_empty_statement:
-      '{' inner_statement_list '}'
-    {
-        if ($2) {
-            $$ = $2; prependLeadingComments($$);
-        } else {
-            makeNop($$, $this->startAttributeStack[#1], $this->endAttributes);
-            if (null === $$) { $$ = array(); }
-        }
-    }
-    | T_IF '(' expr ')' statement elseif_list else_single
-          { $$ = Stmt\If_[$3, ['stmts' => toArray($5), 'elseifs' => $6, 'else' => $7]]; }
-    | T_IF '(' expr ')' ':' inner_statement_list new_elseif_list new_else_single T_ENDIF ';'
-          { $$ = Stmt\If_[$3, ['stmts' => $6, 'elseifs' => $7, 'else' => $8]]; }
-    | T_WHILE '(' expr ')' while_statement                  { $$ = Stmt\While_[$3, $5]; }
-    | T_DO statement T_WHILE '(' expr ')' ';'               { $$ = Stmt\Do_   [$5, toArray($2)]; }
-    | T_FOR '(' for_expr ';'  for_expr ';' for_expr ')' for_statement
-          { $$ = Stmt\For_[['init' => $3, 'cond' => $5, 'loop' => $7, 'stmts' => $9]]; }
-    | T_SWITCH '(' expr ')' switch_case_list                { $$ = Stmt\Switch_[$3, $5]; }
-    | T_BREAK optional_expr semi                            { $$ = Stmt\Break_[$2]; }
-    | T_CONTINUE optional_expr semi                         { $$ = Stmt\Continue_[$2]; }
-    | T_RETURN optional_expr semi                           { $$ = Stmt\Return_[$2]; }
-    | T_GLOBAL global_var_list semi                         { $$ = Stmt\Global_[$2]; }
-    | T_STATIC static_var_list semi                         { $$ = Stmt\Static_[$2]; }
-    | T_ECHO expr_list_forbid_comma semi                    { $$ = Stmt\Echo_[$2]; }
-    | T_INLINE_HTML                                         { $$ = Stmt\InlineHTML[$1]; }
-    | expr semi {
-        $e = $1;
-        if ($e instanceof Expr\Throw_) {
-            // For backwards-compatibility reasons, convert throw in statement position into
-            // Stmt\Throw_ rather than Stmt\Expression(Expr\Throw_).
-            $$ = Stmt\Throw_[$e->expr];
-        } else {
-            $$ = Stmt\Expression[$e];
-        }
-    }
-    | T_UNSET '(' variables_list ')' semi                   { $$ = Stmt\Unset_[$3]; }
-    | T_FOREACH '(' expr T_AS foreach_variable ')' foreach_statement
-          { $$ = Stmt\Foreach_[$3, $5[0], ['keyVar' => null, 'byRef' => $5[1], 'stmts' => $7]]; }
-    | T_FOREACH '(' expr T_AS variable T_DOUBLE_ARROW foreach_variable ')' foreach_statement
-          { $$ = Stmt\Foreach_[$3, $7[0], ['keyVar' => $5, 'byRef' => $7[1], 'stmts' => $9]]; }
-    | T_FOREACH '(' expr error ')' foreach_statement
-          { $$ = Stmt\Foreach_[$3, new Expr\Error(stackAttributes(#4)), ['stmts' => $6]]; }
-    | T_DECLARE '(' declare_list ')' declare_statement      { $$ = Stmt\Declare_[$3, $5]; }
-    | T_TRY '{' inner_statement_list '}' catches optional_finally
-          { $$ = Stmt\TryCatch[$3, $5, $6]; $this->checkTryCatch($$); }
-    | T_GOTO identifier_not_reserved semi                   { $$ = Stmt\Goto_[$2]; }
-    | identifier_not_reserved ':'                           { $$ = Stmt\Label[$1]; }
-    | error                                                 { $$ = array(); /* means: no statement */ }
-;
-
-statement:
-      non_empty_statement                                   { $$ = $1; }
-    | ';'
-          { makeNop($$, $this->startAttributeStack[#1], $this->endAttributes);
-            if ($$ === null) $$ = array(); /* means: no statement */ }
-;
-
-catches:
-      /* empty */                                           { init(); }
-    | catches catch                                         { push($1, $2); }
-;
-
-name_union:
-      name                                                  { init($1); }
-    | name_union '|' name                                   { push($1, $3); }
-;
-
-catch:
-    T_CATCH '(' name_union optional_plain_variable ')' '{' inner_statement_list '}'
-        { $$ = Stmt\Catch_[$3, $4, $7]; }
-;
-
-optional_finally:
-      /* empty */                                           { $$ = null; }
-    | T_FINALLY '{' inner_statement_list '}'                { $$ = Stmt\Finally_[$3]; }
-;
-
-variables_list:
-      non_empty_variables_list optional_comma               { $$ = $1; }
-;
-
-non_empty_variables_list:
-      variable                                              { init($1); }
-    | non_empty_variables_list ',' variable                 { push($1, $3); }
-;
-
-optional_ref:
-      /* empty */                                           { $$ = false; }
-    | ampersand                                             { $$ = true; }
-;
-
-optional_arg_ref:
-      /* empty */                                           { $$ = false; }
-    | T_AMPERSAND_FOLLOWED_BY_VAR_OR_VARARG                 { $$ = true; }
-;
-
-optional_ellipsis:
-      /* empty */                                           { $$ = false; }
-    | T_ELLIPSIS                                            { $$ = true; }
-;
-
-block_or_error:
-      '{' inner_statement_list '}'                          { $$ = $2; }
-    | error                                                 { $$ = []; }
-;
-
-function_declaration_statement:
-      T_FUNCTION optional_ref identifier_not_reserved '(' parameter_list ')' optional_return_type block_or_error
-          { $$ = Stmt\Function_[$3, ['byRef' => $2, 'params' => $5, 'returnType' => $7, 'stmts' => $8, 'attrGroups' => []]]; }
-    | attributes T_FUNCTION optional_ref identifier_not_reserved '(' parameter_list ')' optional_return_type block_or_error
-          { $$ = Stmt\Function_[$4, ['byRef' => $3, 'params' => $6, 'returnType' => $8, 'stmts' => $9, 'attrGroups' => $1]]; }
-;
-
-class_declaration_statement:
-      optional_attributes class_entry_type identifier_not_reserved extends_from implements_list '{' class_statement_list '}'
-          { $$ = Stmt\Class_[$3, ['type' => $2, 'extends' => $4, 'implements' => $5, 'stmts' => $7, 'attrGroups' => $1]];
-            $this->checkClass($$, #3); }
-    | optional_attributes T_INTERFACE identifier_not_reserved interface_extends_list '{' class_statement_list '}'
-          { $$ = Stmt\Interface_[$3, ['extends' => $4, 'stmts' => $6, 'attrGroups' => $1]];
-            $this->checkInterface($$, #3); }
-    | optional_attributes T_TRAIT identifier_not_reserved '{' class_statement_list '}'
-          { $$ = Stmt\Trait_[$3, ['stmts' => $5, 'attrGroups' => $1]]; }
-    | optional_attributes T_ENUM identifier_not_reserved enum_scalar_type implements_list '{' class_statement_list '}'
-          { $$ = Stmt\Enum_[$3, ['scalarType' => $4, 'implements' => $5, 'stmts' => $7, 'attrGroups' => $1]];
-            $this->checkEnum($$, #3); }
-;
-
-enum_scalar_type:
-      /* empty */                                           { $$ = null; }
-    | ':' type                                              { $$ = $2; }
-
-enum_case_expr:
-      /* empty */                                           { $$ = null; }
-    | '=' expr                                              { $$ = $2; }
-;
-
-class_entry_type:
-      T_CLASS                                               { $$ = 0; }
-    | class_modifiers T_CLASS                               { $$ = $1; }
-;
-
-class_modifiers:
-      class_modifier                                        { $$ = $1; }
-    | class_modifiers class_modifier                        { $this->checkClassModifier($1, $2, #2); $$ = $1 | $2; }
-;
-
-class_modifier:
-      T_ABSTRACT                                            { $$ = Stmt\Class_::MODIFIER_ABSTRACT; }
-    | T_FINAL                                               { $$ = Stmt\Class_::MODIFIER_FINAL; }
-    | T_READONLY                                            { $$ = Stmt\Class_::MODIFIER_READONLY; }
-;
-
-extends_from:
-      /* empty */                                           { $$ = null; }
-    | T_EXTENDS class_name                                  { $$ = $2; }
-;
-
-interface_extends_list:
-      /* empty */                                           { $$ = array(); }
-    | T_EXTENDS class_name_list                             { $$ = $2; }
-;
-
-implements_list:
-      /* empty */                                           { $$ = array(); }
-    | T_IMPLEMENTS class_name_list                          { $$ = $2; }
-;
-
-class_name_list:
-      non_empty_class_name_list no_comma                    { $$ = $1; }
-;
-
-non_empty_class_name_list:
-      class_name                                            { init($1); }
-    | non_empty_class_name_list ',' class_name              { push($1, $3); }
-;
-
-for_statement:
-      statement                                             { $$ = toArray($1); }
-    | ':' inner_statement_list T_ENDFOR ';'                 { $$ = $2; }
-;
-
-foreach_statement:
-      statement                                             { $$ = toArray($1); }
-    | ':' inner_statement_list T_ENDFOREACH ';'             { $$ = $2; }
-;
-
-declare_statement:
-      non_empty_statement                                   { $$ = toArray($1); }
-    | ';'                                                   { $$ = null; }
-    | ':' inner_statement_list T_ENDDECLARE ';'             { $$ = $2; }
-;
-
-declare_list:
-      non_empty_declare_list no_comma                       { $$ = $1; }
-;
-
-non_empty_declare_list:
-      declare_list_element                                  { init($1); }
-    | non_empty_declare_list ',' declare_list_element       { push($1, $3); }
-;
-
-declare_list_element:
-      identifier_not_reserved '=' expr                      { $$ = Stmt\DeclareDeclare[$1, $3]; }
-;
-
-switch_case_list:
-      '{' case_list '}'                                     { $$ = $2; }
-    | '{' ';' case_list '}'                                 { $$ = $3; }
-    | ':' case_list T_ENDSWITCH ';'                         { $$ = $2; }
-    | ':' ';' case_list T_ENDSWITCH ';'                     { $$ = $3; }
-;
-
-case_list:
-      /* empty */                                           { init(); }
-    | case_list case                                        { push($1, $2); }
-;
-
-case:
-      T_CASE expr case_separator inner_statement_list_ex    { $$ = Stmt\Case_[$2, $4]; }
-    | T_DEFAULT case_separator inner_statement_list_ex      { $$ = Stmt\Case_[null, $3]; }
-;
-
-case_separator:
-      ':'
-    | ';'
-;
-
-match:
-      T_MATCH '(' expr ')' '{' match_arm_list '}'           { $$ = Expr\Match_[$3, $6]; }
-;
-
-match_arm_list:
-      /* empty */                                           { $$ = []; }
-    | non_empty_match_arm_list optional_comma               { $$ = $1; }
-;
-
-non_empty_match_arm_list:
-      match_arm                                             { init($1); }
-    | non_empty_match_arm_list ',' match_arm                { push($1, $3); }
-;
-
-match_arm:
-      expr_list_allow_comma T_DOUBLE_ARROW expr             { $$ = Node\MatchArm[$1, $3]; }
-    | T_DEFAULT optional_comma T_DOUBLE_ARROW expr          { $$ = Node\MatchArm[null, $4]; }
-;
-
-while_statement:
-      statement                                             { $$ = toArray($1); }
-    | ':' inner_statement_list T_ENDWHILE ';'               { $$ = $2; }
-;
-
-elseif_list:
-      /* empty */                                           { init(); }
-    | elseif_list elseif                                    { push($1, $2); }
-;
-
-elseif:
-      T_ELSEIF '(' expr ')' statement                       { $$ = Stmt\ElseIf_[$3, toArray($5)]; }
-;
-
-new_elseif_list:
-      /* empty */                                           { init(); }
-    | new_elseif_list new_elseif                            { push($1, $2); }
-;
-
-new_elseif:
-     T_ELSEIF '(' expr ')' ':' inner_statement_list         { $$ = Stmt\ElseIf_[$3, $6]; }
-;
-
-else_single:
-      /* empty */                                           { $$ = null; }
-    | T_ELSE statement                                      { $$ = Stmt\Else_[toArray($2)]; }
-;
-
-new_else_single:
-      /* empty */                                           { $$ = null; }
-    | T_ELSE ':' inner_statement_list                       { $$ = Stmt\Else_[$3]; }
-;
-
-foreach_variable:
-      variable                                              { $$ = array($1, false); }
-    | ampersand variable                                    { $$ = array($2, true); }
-    | list_expr                                             { $$ = array($1, false); }
-    | array_short_syntax                                    { $$ = array($1, false); }
-;
-
-parameter_list:
-      non_empty_parameter_list optional_comma               { $$ = $1; }
-    | /* empty */                                           { $$ = array(); }
-;
-
-non_empty_parameter_list:
-      parameter                                             { init($1); }
-    | non_empty_parameter_list ',' parameter                { push($1, $3); }
-;
-
-optional_property_modifiers:
-      /* empty */               { $$ = 0; }
-    | optional_property_modifiers property_modifier
-          { $this->checkModifier($1, $2, #2); $$ = $1 | $2; }
-;
-
-property_modifier:
-      T_PUBLIC                  { $$ = Stmt\Class_::MODIFIER_PUBLIC; }
-    | T_PROTECTED               { $$ = Stmt\Class_::MODIFIER_PROTECTED; }
-    | T_PRIVATE                 { $$ = Stmt\Class_::MODIFIER_PRIVATE; }
-    | T_READONLY                { $$ = Stmt\Class_::MODIFIER_READONLY; }
-;
-
-parameter:
-      optional_attributes optional_property_modifiers optional_type_without_static
-      optional_arg_ref optional_ellipsis plain_variable
-          { $$ = new Node\Param($6, null, $3, $4, $5, attributes(), $2, $1);
-            $this->checkParam($$); }
-    | optional_attributes optional_property_modifiers optional_type_without_static
-      optional_arg_ref optional_ellipsis plain_variable '=' expr
-          { $$ = new Node\Param($6, $8, $3, $4, $5, attributes(), $2, $1);
-            $this->checkParam($$); }
-    | optional_attributes optional_property_modifiers optional_type_without_static
-      optional_arg_ref optional_ellipsis error
-          { $$ = new Node\Param(Expr\Error[], null, $3, $4, $5, attributes(), $2, $1); }
-;
-
-type_expr:
-      type                                                  { $$ = $1; }
-    | '?' type                                              { $$ = Node\NullableType[$2]; }
-    | union_type                                            { $$ = Node\UnionType[$1]; }
-    | intersection_type                                     { $$ = Node\IntersectionType[$1]; }
-;
-
-type:
-      type_without_static                                   { $$ = $1; }
-    | T_STATIC                                              { $$ = Node\Name['static']; }
-;
-
-type_without_static:
-      name                                                  { $$ = $this->handleBuiltinTypes($1); }
-    | T_ARRAY                                               { $$ = Node\Identifier['array']; }
-    | T_CALLABLE                                            { $$ = Node\Identifier['callable']; }
-;
-
-union_type:
-      type '|' type                                         { init($1, $3); }
-    | union_type '|' type                                   { push($1, $3); }
-;
-
-union_type_without_static:
-      type_without_static '|' type_without_static           { init($1, $3); }
-    | union_type_without_static '|' type_without_static     { push($1, $3); }
-;
-
-intersection_type:
-      type T_AMPERSAND_NOT_FOLLOWED_BY_VAR_OR_VARARG type   { init($1, $3); }
-    | intersection_type T_AMPERSAND_NOT_FOLLOWED_BY_VAR_OR_VARARG type
-          { push($1, $3); }
-;
-
-intersection_type_without_static:
-      type_without_static T_AMPERSAND_NOT_FOLLOWED_BY_VAR_OR_VARARG type_without_static
-          { init($1, $3); }
-    | intersection_type_without_static T_AMPERSAND_NOT_FOLLOWED_BY_VAR_OR_VARARG type_without_static
-          { push($1, $3); }
-;
-
-type_expr_without_static:
-      type_without_static                                   { $$ = $1; }
-    | '?' type_without_static                               { $$ = Node\NullableType[$2]; }
-    | union_type_without_static                             { $$ = Node\UnionType[$1]; }
-    | intersection_type_without_static                      { $$ = Node\IntersectionType[$1]; }
-;
-
-optional_type_without_static:
-      /* empty */                                           { $$ = null; }
-    | type_expr_without_static                              { $$ = $1; }
-;
-
-optional_return_type:
-      /* empty */                                           { $$ = null; }
-    | ':' type_expr                                         { $$ = $2; }
-    | ':' error                                             { $$ = null; }
-;
-
-argument_list:
-      '(' ')'                                               { $$ = array(); }
-    | '(' non_empty_argument_list optional_comma ')'        { $$ = $2; }
-    | '(' variadic_placeholder ')'                          { init($2); }
-;
-
-variadic_placeholder:
-      T_ELLIPSIS                                            { $$ = Node\VariadicPlaceholder[]; }
-;
-
-non_empty_argument_list:
-      argument                                              { init($1); }
-    | non_empty_argument_list ',' argument                  { push($1, $3); }
-;
-
-argument:
-      expr                                                  { $$ = Node\Arg[$1, false, false]; }
-    | ampersand variable                                    { $$ = Node\Arg[$2, true, false]; }
-    | T_ELLIPSIS expr                                       { $$ = Node\Arg[$2, false, true]; }
-    | identifier_maybe_reserved ':' expr
-          { $$ = new Node\Arg($3, false, false, attributes(), $1); }
-;
-
-global_var_list:
-      non_empty_global_var_list no_comma                    { $$ = $1; }
-;
-
-non_empty_global_var_list:
-      non_empty_global_var_list ',' global_var              { push($1, $3); }
-    | global_var                                            { init($1); }
-;
-
-global_var:
-      simple_variable                                       { $$ = $1; }
-;
-
-static_var_list:
-      non_empty_static_var_list no_comma                    { $$ = $1; }
-;
-
-non_empty_static_var_list:
-      non_empty_static_var_list ',' static_var              { push($1, $3); }
-    | static_var                                            { init($1); }
-;
-
-static_var:
-      plain_variable                                        { $$ = Stmt\StaticVar[$1, null]; }
-    | plain_variable '=' expr                               { $$ = Stmt\StaticVar[$1, $3]; }
-;
-
-class_statement_list_ex:
-      class_statement_list_ex class_statement               { if ($2 !== null) { push($1, $2); } }
-    | /* empty */                                           { init(); }
-;
-
-class_statement_list:
-      class_statement_list_ex
-          { makeZeroLengthNop($nop, $this->lookaheadStartAttributes);
-            if ($nop !== null) { $1[] = $nop; } $$ = $1; }
-;
-
-class_statement:
-      optional_attributes variable_modifiers optional_type_without_static property_declaration_list semi
-          { $$ = new Stmt\Property($2, $4, attributes(), $3, $1);
-            $this->checkProperty($$, #2); }
-    | optional_attributes method_modifiers T_CONST class_const_list semi
-          { $$ = new Stmt\ClassConst($4, $2, attributes(), $1);
-            $this->checkClassConst($$, #2); }
-    | optional_attributes method_modifiers T_FUNCTION optional_ref identifier_maybe_reserved '(' parameter_list ')'
-      optional_return_type method_body
-          { $$ = Stmt\ClassMethod[$5, ['type' => $2, 'byRef' => $4, 'params' => $7, 'returnType' => $9, 'stmts' => $10, 'attrGroups' => $1]];
-            $this->checkClassMethod($$, #2); }
-    | T_USE class_name_list trait_adaptations               { $$ = Stmt\TraitUse[$2, $3]; }
-    | optional_attributes T_CASE identifier_maybe_reserved enum_case_expr semi
-         { $$ = Stmt\EnumCase[$3, $4, $1]; }
-    | error                                                 { $$ = null; /* will be skipped */ }
-;
-
-trait_adaptations:
-      ';'                                                   { $$ = array(); }
-    | '{' trait_adaptation_list '}'                         { $$ = $2; }
-;
-
-trait_adaptation_list:
-      /* empty */                                           { init(); }
-    | trait_adaptation_list trait_adaptation                { push($1, $2); }
-;
-
-trait_adaptation:
-      trait_method_reference_fully_qualified T_INSTEADOF class_name_list ';'
-          { $$ = Stmt\TraitUseAdaptation\Precedence[$1[0], $1[1], $3]; }
-    | trait_method_reference T_AS member_modifier identifier_maybe_reserved ';'
-          { $$ = Stmt\TraitUseAdaptation\Alias[$1[0], $1[1], $3, $4]; }
-    | trait_method_reference T_AS member_modifier ';'
-          { $$ = Stmt\TraitUseAdaptation\Alias[$1[0], $1[1], $3, null]; }
-    | trait_method_reference T_AS identifier_not_reserved ';'
-          { $$ = Stmt\TraitUseAdaptation\Alias[$1[0], $1[1], null, $3]; }
-    | trait_method_reference T_AS reserved_non_modifiers_identifier ';'
-          { $$ = Stmt\TraitUseAdaptation\Alias[$1[0], $1[1], null, $3]; }
-;
-
-trait_method_reference_fully_qualified:
-      name T_PAAMAYIM_NEKUDOTAYIM identifier_maybe_reserved { $$ = array($1, $3); }
-;
-trait_method_reference:
-      trait_method_reference_fully_qualified                { $$ = $1; }
-    | identifier_maybe_reserved                             { $$ = array(null, $1); }
-;
-
-method_body:
-      ';' /* abstract method */                             { $$ = null; }
-    | block_or_error                                        { $$ = $1; }
-;
-
-variable_modifiers:
-      non_empty_member_modifiers                            { $$ = $1; }
-    | T_VAR                                                 { $$ = 0; }
-;
-
-method_modifiers:
-      /* empty */                                           { $$ = 0; }
-    | non_empty_member_modifiers                            { $$ = $1; }
-;
-
-non_empty_member_modifiers:
-      member_modifier                                       { $$ = $1; }
-    | non_empty_member_modifiers member_modifier            { $this->checkModifier($1, $2, #2); $$ = $1 | $2; }
-;
-
-member_modifier:
-      T_PUBLIC                                              { $$ = Stmt\Class_::MODIFIER_PUBLIC; }
-    | T_PROTECTED                                           { $$ = Stmt\Class_::MODIFIER_PROTECTED; }
-    | T_PRIVATE                                             { $$ = Stmt\Class_::MODIFIER_PRIVATE; }
-    | T_STATIC                                              { $$ = Stmt\Class_::MODIFIER_STATIC; }
-    | T_ABSTRACT                                            { $$ = Stmt\Class_::MODIFIER_ABSTRACT; }
-    | T_FINAL                                               { $$ = Stmt\Class_::MODIFIER_FINAL; }
-    | T_READONLY                                            { $$ = Stmt\Class_::MODIFIER_READONLY; }
-;
-
-property_declaration_list:
-      non_empty_property_declaration_list no_comma          { $$ = $1; }
-;
-
-non_empty_property_declaration_list:
-      property_declaration                                  { init($1); }
-    | non_empty_property_declaration_list ',' property_declaration
-          { push($1, $3); }
-;
-
-property_decl_name:
-      T_VARIABLE                                            { $$ = Node\VarLikeIdentifier[parseVar($1)]; }
-;
-
-property_declaration:
-      property_decl_name                                    { $$ = Stmt\PropertyProperty[$1, null]; }
-    | property_decl_name '=' expr                           { $$ = Stmt\PropertyProperty[$1, $3]; }
-;
-
-expr_list_forbid_comma:
-      non_empty_expr_list no_comma                          { $$ = $1; }
-;
-
-expr_list_allow_comma:
-      non_empty_expr_list optional_comma                    { $$ = $1; }
-;
-
-non_empty_expr_list:
-      non_empty_expr_list ',' expr                          { push($1, $3); }
-    | expr                                                  { init($1); }
-;
-
-for_expr:
-      /* empty */                                           { $$ = array(); }
-    | expr_list_forbid_comma                                { $$ = $1; }
-;
-
-expr:
-      variable                                              { $$ = $1; }
-    | list_expr '=' expr                                    { $$ = Expr\Assign[$1, $3]; }
-    | array_short_syntax '=' expr                           { $$ = Expr\Assign[$1, $3]; }
-    | variable '=' expr                                     { $$ = Expr\Assign[$1, $3]; }
-    | variable '=' ampersand variable                       { $$ = Expr\AssignRef[$1, $4]; }
-    | new_expr                                              { $$ = $1; }
-    | match                                                 { $$ = $1; }
-    | T_CLONE expr                                          { $$ = Expr\Clone_[$2]; }
-    | variable T_PLUS_EQUAL expr                            { $$ = Expr\AssignOp\Plus      [$1, $3]; }
-    | variable T_MINUS_EQUAL expr                           { $$ = Expr\AssignOp\Minus     [$1, $3]; }
-    | variable T_MUL_EQUAL expr                             { $$ = Expr\AssignOp\Mul       [$1, $3]; }
-    | variable T_DIV_EQUAL expr                             { $$ = Expr\AssignOp\Div       [$1, $3]; }
-    | variable T_CONCAT_EQUAL expr                          { $$ = Expr\AssignOp\Concat    [$1, $3]; }
-    | variable T_MOD_EQUAL expr                             { $$ = Expr\AssignOp\Mod       [$1, $3]; }
-    | variable T_AND_EQUAL expr                             { $$ = Expr\AssignOp\BitwiseAnd[$1, $3]; }
-    | variable T_OR_EQUAL expr                              { $$ = Expr\AssignOp\BitwiseOr [$1, $3]; }
-    | variable T_XOR_EQUAL expr                             { $$ = Expr\AssignOp\BitwiseXor[$1, $3]; }
-    | variable T_SL_EQUAL expr                              { $$ = Expr\AssignOp\ShiftLeft [$1, $3]; }
-    | variable T_SR_EQUAL expr                              { $$ = Expr\AssignOp\ShiftRight[$1, $3]; }
-    | variable T_POW_EQUAL expr                             { $$ = Expr\AssignOp\Pow       [$1, $3]; }
-    | variable T_COALESCE_EQUAL expr                        { $$ = Expr\AssignOp\Coalesce  [$1, $3]; }
-    | variable T_INC                                        { $$ = Expr\PostInc[$1]; }
-    | T_INC variable                                        { $$ = Expr\PreInc [$2]; }
-    | variable T_DEC                                        { $$ = Expr\PostDec[$1]; }
-    | T_DEC variable                                        { $$ = Expr\PreDec [$2]; }
-    | expr T_BOOLEAN_OR expr                                { $$ = Expr\BinaryOp\BooleanOr [$1, $3]; }
-    | expr T_BOOLEAN_AND expr                               { $$ = Expr\BinaryOp\BooleanAnd[$1, $3]; }
-    | expr T_LOGICAL_OR expr                                { $$ = Expr\BinaryOp\LogicalOr [$1, $3]; }
-    | expr T_LOGICAL_AND expr                               { $$ = Expr\BinaryOp\LogicalAnd[$1, $3]; }
-    | expr T_LOGICAL_XOR expr                               { $$ = Expr\BinaryOp\LogicalXor[$1, $3]; }
-    | expr '|' expr                                         { $$ = Expr\BinaryOp\BitwiseOr [$1, $3]; }
-    | expr T_AMPERSAND_NOT_FOLLOWED_BY_VAR_OR_VARARG expr   { $$ = Expr\BinaryOp\BitwiseAnd[$1, $3]; }
-    | expr T_AMPERSAND_FOLLOWED_BY_VAR_OR_VARARG expr       { $$ = Expr\BinaryOp\BitwiseAnd[$1, $3]; }
-    | expr '^' expr                                         { $$ = Expr\BinaryOp\BitwiseXor[$1, $3]; }
-    | expr '.' expr                                         { $$ = Expr\BinaryOp\Concat    [$1, $3]; }
-    | expr '+' expr                                         { $$ = Expr\BinaryOp\Plus      [$1, $3]; }
-    | expr '-' expr                                         { $$ = Expr\BinaryOp\Minus     [$1, $3]; }
-    | expr '*' expr                                         { $$ = Expr\BinaryOp\Mul       [$1, $3]; }
-    | expr '/' expr                                         { $$ = Expr\BinaryOp\Div       [$1, $3]; }
-    | expr '%' expr                                         { $$ = Expr\BinaryOp\Mod       [$1, $3]; }
-    | expr T_SL expr                                        { $$ = Expr\BinaryOp\ShiftLeft [$1, $3]; }
-    | expr T_SR expr                                        { $$ = Expr\BinaryOp\ShiftRight[$1, $3]; }
-    | expr T_POW expr                                       { $$ = Expr\BinaryOp\Pow       [$1, $3]; }
-    | '+' expr %prec T_INC                                  { $$ = Expr\UnaryPlus [$2]; }
-    | '-' expr %prec T_INC                                  { $$ = Expr\UnaryMinus[$2]; }
-    | '!' expr                                              { $$ = Expr\BooleanNot[$2]; }
-    | '~' expr                                              { $$ = Expr\BitwiseNot[$2]; }
-    | expr T_IS_IDENTICAL expr                              { $$ = Expr\BinaryOp\Identical     [$1, $3]; }
-    | expr T_IS_NOT_IDENTICAL expr                          { $$ = Expr\BinaryOp\NotIdentical  [$1, $3]; }
-    | expr T_IS_EQUAL expr                                  { $$ = Expr\BinaryOp\Equal         [$1, $3]; }
-    | expr T_IS_NOT_EQUAL expr                              { $$ = Expr\BinaryOp\NotEqual      [$1, $3]; }
-    | expr T_SPACESHIP expr                                 { $$ = Expr\BinaryOp\Spaceship     [$1, $3]; }
-    | expr '<' expr                                         { $$ = Expr\BinaryOp\Smaller       [$1, $3]; }
-    | expr T_IS_SMALLER_OR_EQUAL expr                       { $$ = Expr\BinaryOp\SmallerOrEqual[$1, $3]; }
-    | expr '>' expr                                         { $$ = Expr\BinaryOp\Greater       [$1, $3]; }
-    | expr T_IS_GREATER_OR_EQUAL expr                       { $$ = Expr\BinaryOp\GreaterOrEqual[$1, $3]; }
-    | expr T_INSTANCEOF class_name_reference                { $$ = Expr\Instanceof_[$1, $3]; }
-    | '(' expr ')'                                          { $$ = $2; }
-    | expr '?' expr ':' expr                                { $$ = Expr\Ternary[$1, $3,   $5]; }
-    | expr '?' ':' expr                                     { $$ = Expr\Ternary[$1, null, $4]; }
-    | expr T_COALESCE expr                                  { $$ = Expr\BinaryOp\Coalesce[$1, $3]; }
-    | T_ISSET '(' expr_list_allow_comma ')'                 { $$ = Expr\Isset_[$3]; }
-    | T_EMPTY '(' expr ')'                                  { $$ = Expr\Empty_[$3]; }
-    | T_INCLUDE expr                                        { $$ = Expr\Include_[$2, Expr\Include_::TYPE_INCLUDE]; }
-    | T_INCLUDE_ONCE expr                                   { $$ = Expr\Include_[$2, Expr\Include_::TYPE_INCLUDE_ONCE]; }
-    | T_EVAL '(' expr ')'                                   { $$ = Expr\Eval_[$3]; }
-    | T_REQUIRE expr                                        { $$ = Expr\Include_[$2, Expr\Include_::TYPE_REQUIRE]; }
-    | T_REQUIRE_ONCE expr                                   { $$ = Expr\Include_[$2, Expr\Include_::TYPE_REQUIRE_ONCE]; }
-    | T_INT_CAST expr                                       { $$ = Expr\Cast\Int_    [$2]; }
-    | T_DOUBLE_CAST expr
-          { $attrs = attributes();
-            $attrs['kind'] = $this->getFloatCastKind($1);
-            $$ = new Expr\Cast\Double($2, $attrs); }
-    | T_STRING_CAST expr                                    { $$ = Expr\Cast\String_ [$2]; }
-    | T_ARRAY_CAST expr                                     { $$ = Expr\Cast\Array_  [$2]; }
-    | T_OBJECT_CAST expr                                    { $$ = Expr\Cast\Object_ [$2]; }
-    | T_BOOL_CAST expr                                      { $$ = Expr\Cast\Bool_   [$2]; }
-    | T_UNSET_CAST expr                                     { $$ = Expr\Cast\Unset_  [$2]; }
-    | T_EXIT exit_expr
-          { $attrs = attributes();
-            $attrs['kind'] = strtolower($1) === 'exit' ? Expr\Exit_::KIND_EXIT : Expr\Exit_::KIND_DIE;
-            $$ = new Expr\Exit_($2, $attrs); }
-    | '@' expr                                              { $$ = Expr\ErrorSuppress[$2]; }
-    | scalar                                                { $$ = $1; }
-    | '`' backticks_expr '`'                                { $$ = Expr\ShellExec[$2]; }
-    | T_PRINT expr                                          { $$ = Expr\Print_[$2]; }
-    | T_YIELD                                               { $$ = Expr\Yield_[null, null]; }
-    | T_YIELD expr                                          { $$ = Expr\Yield_[$2, null]; }
-    | T_YIELD expr T_DOUBLE_ARROW expr                      { $$ = Expr\Yield_[$4, $2]; }
-    | T_YIELD_FROM expr                                     { $$ = Expr\YieldFrom[$2]; }
-    | T_THROW expr                                          { $$ = Expr\Throw_[$2]; }
-
-    | T_FN optional_ref '(' parameter_list ')' optional_return_type T_DOUBLE_ARROW expr %prec T_THROW
-          { $$ = Expr\ArrowFunction[['static' => false, 'byRef' => $2, 'params' => $4, 'returnType' => $6, 'expr' => $8, 'attrGroups' => []]]; }
-    | T_STATIC T_FN optional_ref '(' parameter_list ')' optional_return_type T_DOUBLE_ARROW expr %prec T_THROW
-          { $$ = Expr\ArrowFunction[['static' => true, 'byRef' => $3, 'params' => $5, 'returnType' => $7, 'expr' => $9, 'attrGroups' => []]]; }
-    | T_FUNCTION optional_ref '(' parameter_list ')' lexical_vars optional_return_type block_or_error
-          { $$ = Expr\Closure[['static' => false, 'byRef' => $2, 'params' => $4, 'uses' => $6, 'returnType' => $7, 'stmts' => $8, 'attrGroups' => []]]; }
-    | T_STATIC T_FUNCTION optional_ref '(' parameter_list ')' lexical_vars optional_return_type       block_or_error
-          { $$ = Expr\Closure[['static' => true, 'byRef' => $3, 'params' => $5, 'uses' => $7, 'returnType' => $8, 'stmts' => $9, 'attrGroups' => []]]; }
-
-    | attributes T_FN optional_ref '(' parameter_list ')' optional_return_type T_DOUBLE_ARROW expr %prec T_THROW
-          { $$ = Expr\ArrowFunction[['static' => false, 'byRef' => $3, 'params' => $5, 'returnType' => $7, 'expr' => $9, 'attrGroups' => $1]]; }
-    | attributes T_STATIC T_FN optional_ref '(' parameter_list ')' optional_return_type T_DOUBLE_ARROW expr %prec T_THROW
-          { $$ = Expr\ArrowFunction[['static' => true, 'byRef' => $4, 'params' => $6, 'returnType' => $8, 'expr' => $10, 'attrGroups' => $1]]; }
-    | attributes T_FUNCTION optional_ref '(' parameter_list ')' lexical_vars optional_return_type block_or_error
-          { $$ = Expr\Closure[['static' => false, 'byRef' => $3, 'params' => $5, 'uses' => $7, 'returnType' => $8, 'stmts' => $9, 'attrGroups' => $1]]; }
-    | attributes T_STATIC T_FUNCTION optional_ref '(' parameter_list ')' lexical_vars optional_return_type       block_or_error
-          { $$ = Expr\Closure[['static' => true, 'byRef' => $4, 'params' => $6, 'uses' => $8, 'returnType' => $9, 'stmts' => $10, 'attrGroups' => $1]]; }
-;
-
-anonymous_class:
-      optional_attributes T_CLASS ctor_arguments extends_from implements_list '{' class_statement_list '}'
-          { $$ = array(Stmt\Class_[null, ['type' => 0, 'extends' => $4, 'implements' => $5, 'stmts' => $7, 'attrGroups' => $1]], $3);
-            $this->checkClass($$[0], -1); }
-;
-
-new_expr:
-      T_NEW class_name_reference ctor_arguments             { $$ = Expr\New_[$2, $3]; }
-    | T_NEW anonymous_class
-          { list($class, $ctorArgs) = $2; $$ = Expr\New_[$class, $ctorArgs]; }
-;
-
-lexical_vars:
-      /* empty */                                           { $$ = array(); }
-    | T_USE '(' lexical_var_list ')'                        { $$ = $3; }
-;
-
-lexical_var_list:
-      non_empty_lexical_var_list optional_comma             { $$ = $1; }
-;
-
-non_empty_lexical_var_list:
-      lexical_var                                           { init($1); }
-    | non_empty_lexical_var_list ',' lexical_var            { push($1, $3); }
-;
-
-lexical_var:
-      optional_ref plain_variable                           { $$ = Expr\ClosureUse[$2, $1]; }
-;
-
-function_call:
-      name argument_list                                    { $$ = Expr\FuncCall[$1, $2]; }
-    | callable_expr argument_list                           { $$ = Expr\FuncCall[$1, $2]; }
-    | class_name_or_var T_PAAMAYIM_NEKUDOTAYIM member_name argument_list
-          { $$ = Expr\StaticCall[$1, $3, $4]; }
-;
-
-class_name:
-      T_STATIC                                              { $$ = Name[$1]; }
-    | name                                                  { $$ = $1; }
-;
-
-name:
-      T_STRING                                              { $$ = Name[$1]; }
-    | T_NAME_QUALIFIED                                      { $$ = Name[$1]; }
-    | T_NAME_FULLY_QUALIFIED                                { $$ = Name\FullyQualified[substr($1, 1)]; }
-    | T_NAME_RELATIVE                                       { $$ = Name\Relative[substr($1, 10)]; }
-;
-
-class_name_reference:
-      class_name                                            { $$ = $1; }
-    | new_variable                                          { $$ = $1; }
-    | '(' expr ')'                                          { $$ = $2; }
-    | error                                                 { $$ = Expr\Error[]; $this->errorState = 2; }
-;
-
-class_name_or_var:
-      class_name                                            { $$ = $1; }
-    | fully_dereferencable                                  { $$ = $1; }
-;
-
-exit_expr:
-      /* empty */                                           { $$ = null; }
-    | '(' optional_expr ')'                                 { $$ = $2; }
-;
-
-backticks_expr:
-      /* empty */                                           { $$ = array(); }
-    | T_ENCAPSED_AND_WHITESPACE
-          { $$ = array(Scalar\EncapsedStringPart[Scalar\String_::parseEscapeSequences($1, '`')]); }
-    | encaps_list                                           { parseEncapsed($1, '`', true); $$ = $1; }
-;
-
-ctor_arguments:
-      /* empty */                                           { $$ = array(); }
-    | argument_list                                         { $$ = $1; }
-;
-
-constant:
-      name                                                  { $$ = Expr\ConstFetch[$1]; }
-    | T_LINE                                                { $$ = Scalar\MagicConst\Line[]; }
-    | T_FILE                                                { $$ = Scalar\MagicConst\File[]; }
-    | T_DIR                                                 { $$ = Scalar\MagicConst\Dir[]; }
-    | T_CLASS_C                                             { $$ = Scalar\MagicConst\Class_[]; }
-    | T_TRAIT_C                                             { $$ = Scalar\MagicConst\Trait_[]; }
-    | T_METHOD_C                                            { $$ = Scalar\MagicConst\Method[]; }
-    | T_FUNC_C                                              { $$ = Scalar\MagicConst\Function_[]; }
-    | T_NS_C                                                { $$ = Scalar\MagicConst\Namespace_[]; }
-;
-
-class_constant:
-      class_name_or_var T_PAAMAYIM_NEKUDOTAYIM identifier_maybe_reserved
-          { $$ = Expr\ClassConstFetch[$1, $3]; }
-    /* We interpret an isolated FOO:: as an unfinished class constant fetch. It could also be
-       an unfinished static property fetch or unfinished scoped call. */
-    | class_name_or_var T_PAAMAYIM_NEKUDOTAYIM error
-          { $$ = Expr\ClassConstFetch[$1, new Expr\Error(stackAttributes(#3))]; $this->errorState = 2; }
-;
-
-array_short_syntax:
-      '[' array_pair_list ']'
-          { $attrs = attributes(); $attrs['kind'] = Expr\Array_::KIND_SHORT;
-            $$ = new Expr\Array_($2, $attrs); }
-;
-
-dereferencable_scalar:
-      T_ARRAY '(' array_pair_list ')'
-          { $attrs = attributes(); $attrs['kind'] = Expr\Array_::KIND_LONG;
-            $$ = new Expr\Array_($3, $attrs); }
-    | array_short_syntax                                    { $$ = $1; }
-    | T_CONSTANT_ENCAPSED_STRING                            { $$ = Scalar\String_::fromString($1, attributes()); }
-    | '"' encaps_list '"'
-          { $attrs = attributes(); $attrs['kind'] = Scalar\String_::KIND_DOUBLE_QUOTED;
-            parseEncapsed($2, '"', true); $$ = new Scalar\Encapsed($2, $attrs); }
-;
-
-scalar:
-      T_LNUMBER                                             { $$ = $this->parseLNumber($1, attributes()); }
-    | T_DNUMBER                                             { $$ = Scalar\DNumber::fromString($1, attributes()); }
-    | dereferencable_scalar                                 { $$ = $1; }
-    | constant                                              { $$ = $1; }
-    | class_constant                                        { $$ = $1; }
-    | T_START_HEREDOC T_ENCAPSED_AND_WHITESPACE T_END_HEREDOC
-          { $$ = $this->parseDocString($1, $2, $3, attributes(), stackAttributes(#3), true); }
-    | T_START_HEREDOC T_END_HEREDOC
-          { $$ = $this->parseDocString($1, '', $2, attributes(), stackAttributes(#2), true); }
-    | T_START_HEREDOC encaps_list T_END_HEREDOC
-          { $$ = $this->parseDocString($1, $2, $3, attributes(), stackAttributes(#3), true); }
-;
-
-optional_expr:
-      /* empty */                                           { $$ = null; }
-    | expr                                                  { $$ = $1; }
-;
-
-fully_dereferencable:
-      variable                                              { $$ = $1; }
-    | '(' expr ')'                                          { $$ = $2; }
-    | dereferencable_scalar                                 { $$ = $1; }
-    | class_constant                                        { $$ = $1; }
-;
-
-array_object_dereferencable:
-      fully_dereferencable                                  { $$ = $1; }
-    | constant                                              { $$ = $1; }
-;
-
-callable_expr:
-      callable_variable                                     { $$ = $1; }
-    | '(' expr ')'                                          { $$ = $2; }
-    | dereferencable_scalar                                 { $$ = $1; }
-;
-
-callable_variable:
-      simple_variable                                       { $$ = $1; }
-    | array_object_dereferencable '[' optional_expr ']'     { $$ = Expr\ArrayDimFetch[$1, $3]; }
-    | array_object_dereferencable '{' expr '}'              { $$ = Expr\ArrayDimFetch[$1, $3]; }
-    | function_call                                         { $$ = $1; }
-    | array_object_dereferencable T_OBJECT_OPERATOR property_name argument_list
-          { $$ = Expr\MethodCall[$1, $3, $4]; }
-    | array_object_dereferencable T_NULLSAFE_OBJECT_OPERATOR property_name argument_list
-          { $$ = Expr\NullsafeMethodCall[$1, $3, $4]; }
-;
-
-optional_plain_variable:
-      /* empty */                                           { $$ = null; }
-    | plain_variable                                        { $$ = $1; }
-;
-
-variable:
-      callable_variable                                     { $$ = $1; }
-    | static_member                                         { $$ = $1; }
-    | array_object_dereferencable T_OBJECT_OPERATOR property_name
-          { $$ = Expr\PropertyFetch[$1, $3]; }
-    | array_object_dereferencable T_NULLSAFE_OBJECT_OPERATOR property_name
-          { $$ = Expr\NullsafePropertyFetch[$1, $3]; }
-;
-
-simple_variable:
-      plain_variable                                        { $$ = $1; }
-    | '$' '{' expr '}'                                      { $$ = Expr\Variable[$3]; }
-    | '$' simple_variable                                   { $$ = Expr\Variable[$2]; }
-    | '$' error                                             { $$ = Expr\Variable[Expr\Error[]]; $this->errorState = 2; }
-;
-
-static_member_prop_name:
-      simple_variable
-          { $var = $1->name; $$ = \is_string($var) ? Node\VarLikeIdentifier[$var] : $var; }
-;
-
-static_member:
-      class_name_or_var T_PAAMAYIM_NEKUDOTAYIM static_member_prop_name
-          { $$ = Expr\StaticPropertyFetch[$1, $3]; }
-;
-
-new_variable:
-      simple_variable                                       { $$ = $1; }
-    | new_variable '[' optional_expr ']'                    { $$ = Expr\ArrayDimFetch[$1, $3]; }
-    | new_variable '{' expr '}'                             { $$ = Expr\ArrayDimFetch[$1, $3]; }
-    | new_variable T_OBJECT_OPERATOR property_name          { $$ = Expr\PropertyFetch[$1, $3]; }
-    | new_variable T_NULLSAFE_OBJECT_OPERATOR property_name { $$ = Expr\NullsafePropertyFetch[$1, $3]; }
-    | class_name T_PAAMAYIM_NEKUDOTAYIM static_member_prop_name
-          { $$ = Expr\StaticPropertyFetch[$1, $3]; }
-    | new_variable T_PAAMAYIM_NEKUDOTAYIM static_member_prop_name
-          { $$ = Expr\StaticPropertyFetch[$1, $3]; }
-;
-
-member_name:
-      identifier_maybe_reserved                             { $$ = $1; }
-    | '{' expr '}'                                          { $$ = $2; }
-    | simple_variable                                       { $$ = $1; }
-;
-
-property_name:
-      identifier_not_reserved                               { $$ = $1; }
-    | '{' expr '}'                                          { $$ = $2; }
-    | simple_variable                                       { $$ = $1; }
-    | error                                                 { $$ = Expr\Error[]; $this->errorState = 2; }
-;
-
-list_expr:
-      T_LIST '(' inner_array_pair_list ')'                  { $$ = Expr\List_[$3]; }
-;
-
-array_pair_list:
-      inner_array_pair_list
-          { $$ = $1; $end = count($$)-1; if ($$[$end] === null) array_pop($$); }
-;
-
-comma_or_error:
-      ','
-    | error
-          { /* do nothing -- prevent default action of $$=$1. See #551. */ }
-;
-
-inner_array_pair_list:
-      inner_array_pair_list comma_or_error array_pair       { push($1, $3); }
-    | array_pair                                            { init($1); }
-;
-
-array_pair:
-      expr                                                  { $$ = Expr\ArrayItem[$1, null, false]; }
-    | ampersand variable                                    { $$ = Expr\ArrayItem[$2, null, true]; }
-    | list_expr                                             { $$ = Expr\ArrayItem[$1, null, false]; }
-    | expr T_DOUBLE_ARROW expr                              { $$ = Expr\ArrayItem[$3, $1,   false]; }
-    | expr T_DOUBLE_ARROW ampersand variable                { $$ = Expr\ArrayItem[$4, $1,   true]; }
-    | expr T_DOUBLE_ARROW list_expr                         { $$ = Expr\ArrayItem[$3, $1,   false]; }
-    | T_ELLIPSIS expr                                       { $$ = Expr\ArrayItem[$2, null, false, attributes(), true]; }
-    | /* empty */                                           { $$ = null; }
-;
-
-encaps_list:
-      encaps_list encaps_var                                { push($1, $2); }
-    | encaps_list encaps_string_part                        { push($1, $2); }
-    | encaps_var                                            { init($1); }
-    | encaps_string_part encaps_var                         { init($1, $2); }
-;
-
-encaps_string_part:
-      T_ENCAPSED_AND_WHITESPACE                             { $$ = Scalar\EncapsedStringPart[$1]; }
-;
-
-encaps_str_varname:
-      T_STRING_VARNAME                                      { $$ = Expr\Variable[$1]; }
-;
-
-encaps_var:
-      plain_variable                                        { $$ = $1; }
-    | plain_variable '[' encaps_var_offset ']'              { $$ = Expr\ArrayDimFetch[$1, $3]; }
-    | plain_variable T_OBJECT_OPERATOR identifier_not_reserved
-          { $$ = Expr\PropertyFetch[$1, $3]; }
-    | plain_variable T_NULLSAFE_OBJECT_OPERATOR identifier_not_reserved
-          { $$ = Expr\NullsafePropertyFetch[$1, $3]; }
-    | T_DOLLAR_OPEN_CURLY_BRACES expr '}'                   { $$ = Expr\Variable[$2]; }
-    | T_DOLLAR_OPEN_CURLY_BRACES T_STRING_VARNAME '}'       { $$ = Expr\Variable[$2]; }
-    | T_DOLLAR_OPEN_CURLY_BRACES encaps_str_varname '[' expr ']' '}'
-          { $$ = Expr\ArrayDimFetch[$2, $4]; }
-    | T_CURLY_OPEN variable '}'                             { $$ = $2; }
-;
-
-encaps_var_offset:
-      T_STRING                                              { $$ = Scalar\String_[$1]; }
-    | T_NUM_STRING                                          { $$ = $this->parseNumString($1, attributes()); }
-    | '-' T_NUM_STRING                                      { $$ = $this->parseNumString('-' . $2, attributes()); }
-    | plain_variable                                        { $$ = $1; }
-;
-
-%%
diff --git a/vendor/nikic/php-parser/grammar/phpyLang.php b/vendor/nikic/php-parser/grammar/phpyLang.php
deleted file mode 100644
index 663c2a144..000000000
--- a/vendor/nikic/php-parser/grammar/phpyLang.php
+++ /dev/null
@@ -1,184 +0,0 @@
-<?php
-
-///////////////////////////////
-/// Utility regex constants ///
-///////////////////////////////
-
-const LIB = '(?(DEFINE)
-    (?<singleQuotedString>\'[^\\\\\']*+(?:\\\\.[^\\\\\']*+)*+\')
-    (?<doubleQuotedString>"[^\\\\"]*+(?:\\\\.[^\\\\"]*+)*+")
-    (?<string>(?&singleQuotedString)|(?&doubleQuotedString))
-    (?<comment>/\*[^*]*+(?:\*(?!/)[^*]*+)*+\*/)
-    (?<code>\{[^\'"/{}]*+(?:(?:(?&string)|(?&comment)|(?&code)|/)[^\'"/{}]*+)*+})
-)';
-
-const PARAMS = '\[(?<params>[^[\]]*+(?:\[(?&params)\][^[\]]*+)*+)\]';
-const ARGS   = '\((?<args>[^()]*+(?:\((?&args)\)[^()]*+)*+)\)';
-
-///////////////////////////////
-/// Preprocessing functions ///
-///////////////////////////////
-
-function preprocessGrammar($code) {
-    $code = resolveNodes($code);
-    $code = resolveMacros($code);
-    $code = resolveStackAccess($code);
-
-    return $code;
-}
-
-function resolveNodes($code) {
-    return preg_replace_callback(
-        '~\b(?<name>[A-Z][a-zA-Z_\\\\]++)\s*' . PARAMS . '~',
-        function($matches) {
-            // recurse
-            $matches['params'] = resolveNodes($matches['params']);
-
-            $params = magicSplit(
-                '(?:' . PARAMS . '|' . ARGS . ')(*SKIP)(*FAIL)|,',
-                $matches['params']
-            );
-
-            $paramCode = '';
-            foreach ($params as $param) {
-                $paramCode .= $param . ', ';
-            }
-
-            return 'new ' . $matches['name'] . '(' . $paramCode . 'attributes())';
-        },
-        $code
-    );
-}
-
-function resolveMacros($code) {
-    return preg_replace_callback(
-        '~\b(?<!::|->)(?!array\()(?<name>[a-z][A-Za-z]++)' . ARGS . '~',
-        function($matches) {
-            // recurse
-            $matches['args'] = resolveMacros($matches['args']);
-
-            $name = $matches['name'];
-            $args = magicSplit(
-                '(?:' . PARAMS . '|' . ARGS . ')(*SKIP)(*FAIL)|,',
-                $matches['args']
-            );
-
-            if ('attributes' === $name) {
-                assertArgs(0, $args, $name);
-                return '$this->startAttributeStack[#1] + $this->endAttributes';
-            }
-
-            if ('stackAttributes' === $name) {
-                assertArgs(1, $args, $name);
-                return '$this->startAttributeStack[' . $args[0] . ']'
-                       . ' + $this->endAttributeStack[' . $args[0] . ']';
-            }
-
-            if ('init' === $name) {
-                return '$$ = array(' . implode(', ', $args) . ')';
-            }
-
-            if ('push' === $name) {
-                assertArgs(2, $args, $name);
-
-                return $args[0] . '[] = ' . $args[1] . '; $$ = ' . $args[0];
-            }
-
-            if ('pushNormalizing' === $name) {
-                assertArgs(2, $args, $name);
-
-                return 'if (is_array(' . $args[1] . ')) { $$ = array_merge(' . $args[0] . ', ' . $args[1] . '); }'
-                       . ' else { ' . $args[0] . '[] = ' . $args[1] . '; $$ = ' . $args[0] . '; }';
-            }
-
-            if ('toArray' == $name) {
-                assertArgs(1, $args, $name);
-
-                return 'is_array(' . $args[0] . ') ? ' . $args[0] . ' : array(' . $args[0] . ')';
-            }
-
-            if ('parseVar' === $name) {
-                assertArgs(1, $args, $name);
-
-                return 'substr(' . $args[0] . ', 1)';
-            }
-
-            if ('parseEncapsed' === $name) {
-                assertArgs(3, $args, $name);
-
-                return 'foreach (' . $args[0] . ' as $s) { if ($s instanceof Node\Scalar\EncapsedStringPart) {'
-                       . ' $s->value = Node\Scalar\String_::parseEscapeSequences($s->value, ' . $args[1] . ', ' . $args[2] . '); } }';
-            }
-
-            if ('makeNop' === $name) {
-                assertArgs(3, $args, $name);
-
-                return '$startAttributes = ' . $args[1] . ';'
-                       . ' if (isset($startAttributes[\'comments\']))'
-                       . ' { ' . $args[0] . ' = new Stmt\Nop($startAttributes + ' . $args[2] . '); }'
-                       . ' else { ' . $args[0] . ' = null; }';
-            }
-
-            if ('makeZeroLengthNop' == $name) {
-                assertArgs(2, $args, $name);
-
-                return '$startAttributes = ' . $args[1] . ';'
-                       . ' if (isset($startAttributes[\'comments\']))'
-                       . ' { ' . $args[0] . ' = new Stmt\Nop($this->createCommentNopAttributes($startAttributes[\'comments\'])); }'
-                       . ' else { ' . $args[0] . ' = null; }';
-            }
-
-            if ('prependLeadingComments' === $name) {
-                assertArgs(1, $args, $name);
-
-                return '$attrs = $this->startAttributeStack[#1]; $stmts = ' . $args[0] . '; '
-                       . 'if (!empty($attrs[\'comments\'])) {'
-                       . '$stmts[0]->setAttribute(\'comments\', '
-                       . 'array_merge($attrs[\'comments\'], $stmts[0]->getAttribute(\'comments\', []))); }';
-            }
-
-            return $matches[0];
-        },
-        $code
-    );
-}
-
-function assertArgs($num, $args, $name) {
-    if ($num != count($args)) {
-        die('Wrong argument count for ' . $name . '().');
-    }
-}
-
-function resolveStackAccess($code) {
-    $code = preg_replace('/\$\d+/', '$this->semStack[$0]', $code);
-    $code = preg_replace('/#(\d+)/', '$$1', $code);
-    return $code;
-}
-
-function removeTrailingWhitespace($code) {
-    $lines = explode("\n", $code);
-    $lines = array_map('rtrim', $lines);
-    return implode("\n", $lines);
-}
-
-//////////////////////////////
-/// Regex helper functions ///
-//////////////////////////////
-
-function regex($regex) {
-    return '~' . LIB . '(?:' . str_replace('~', '\~', $regex) . ')~';
-}
-
-function magicSplit($regex, $string) {
-    $pieces = preg_split(regex('(?:(?&string)|(?&comment)|(?&code))(*SKIP)(*FAIL)|' . $regex), $string);
-
-    foreach ($pieces as &$piece) {
-        $piece = trim($piece);
-    }
-
-    if ($pieces === ['']) {
-        return [];
-    }
-
-    return $pieces;
-}
diff --git a/vendor/nikic/php-parser/grammar/rebuildParsers.php b/vendor/nikic/php-parser/grammar/rebuildParsers.php
deleted file mode 100644
index 2d0c6b14d..000000000
--- a/vendor/nikic/php-parser/grammar/rebuildParsers.php
+++ /dev/null
@@ -1,81 +0,0 @@
-<?php
-
-require __DIR__ . '/phpyLang.php';
-
-$grammarFileToName = [
-    __DIR__ . '/php5.y' => 'Php5',
-    __DIR__ . '/php7.y' => 'Php7',
-];
-
-$tokensFile     = __DIR__ . '/tokens.y';
-$tokensTemplate = __DIR__ . '/tokens.template';
-$skeletonFile   = __DIR__ . '/parser.template';
-$tmpGrammarFile = __DIR__ . '/tmp_parser.phpy';
-$tmpResultFile  = __DIR__ . '/tmp_parser.php';
-$resultDir = __DIR__ . '/../lib/PhpParser/Parser';
-$tokensResultsFile = $resultDir . '/Tokens.php';
-
-$kmyacc = getenv('KMYACC');
-if (!$kmyacc) {
-    // Use phpyacc from dev dependencies by default.
-    $kmyacc = __DIR__ . '/../vendor/bin/phpyacc';
-}
-
-$options = array_flip($argv);
-$optionDebug = isset($options['--debug']);
-$optionKeepTmpGrammar = isset($options['--keep-tmp-grammar']);
-
-///////////////////
-/// Main script ///
-///////////////////
-
-$tokens = file_get_contents($tokensFile);
-
-foreach ($grammarFileToName as $grammarFile => $name) {
-    echo "Building temporary $name grammar file.\n";
-
-    $grammarCode = file_get_contents($grammarFile);
-    $grammarCode = str_replace('%tokens', $tokens, $grammarCode);
-    $grammarCode = preprocessGrammar($grammarCode);
-
-    file_put_contents($tmpGrammarFile, $grammarCode);
-
-    $additionalArgs = $optionDebug ? '-t -v' : '';
-
-    echo "Building $name parser.\n";
-    $output = execCmd("$kmyacc $additionalArgs -m $skeletonFile -p $name $tmpGrammarFile");
-
-    $resultCode = file_get_contents($tmpResultFile);
-    $resultCode = removeTrailingWhitespace($resultCode);
-
-    ensureDirExists($resultDir);
-    file_put_contents("$resultDir/$name.php", $resultCode);
-    unlink($tmpResultFile);
-
-    echo "Building token definition.\n";
-    $output = execCmd("$kmyacc -m $tokensTemplate $tmpGrammarFile");
-    rename($tmpResultFile, $tokensResultsFile);
-
-    if (!$optionKeepTmpGrammar) {
-        unlink($tmpGrammarFile);
-    }
-}
-
-////////////////////////////////
-/// Utility helper functions ///
-////////////////////////////////
-
-function ensureDirExists($dir) {
-    if (!is_dir($dir)) {
-        mkdir($dir, 0777, true);
-    }
-}
-
-function execCmd($cmd) {
-    $output = trim(shell_exec("$cmd 2>&1"));
-    if ($output !== "") {
-        echo "> " . $cmd . "\n";
-        echo $output;
-    }
-    return $output;
-}
diff --git a/vendor/nikic/php-parser/grammar/tokens.template b/vendor/nikic/php-parser/grammar/tokens.template
deleted file mode 100644
index ba4e4901c..000000000
--- a/vendor/nikic/php-parser/grammar/tokens.template
+++ /dev/null
@@ -1,17 +0,0 @@
-<?php
-$meta #
-#semval($) $this->semValue
-#semval($,%t) $this->semValue
-#semval(%n) $this->stackPos-(%l-%n)
-#semval(%n,%t) $this->stackPos-(%l-%n)
-
-namespace PhpParser\Parser;
-#include;
-
-/* GENERATED file based on grammar/tokens.y */
-final class Tokens
-{
-#tokenval
-    const %s = %n;
-#endtokenval
-}
diff --git a/vendor/nikic/php-parser/grammar/tokens.y b/vendor/nikic/php-parser/grammar/tokens.y
deleted file mode 100644
index 8f0b21725..000000000
--- a/vendor/nikic/php-parser/grammar/tokens.y
+++ /dev/null
@@ -1,115 +0,0 @@
-/* We currently rely on the token ID mapping to be the same between PHP 5 and PHP 7 - so the same lexer can be used for
- * both. This is enforced by sharing this token file. */
-
-%right T_THROW
-%left T_INCLUDE T_INCLUDE_ONCE T_EVAL T_REQUIRE T_REQUIRE_ONCE
-%left ','
-%left T_LOGICAL_OR
-%left T_LOGICAL_XOR
-%left T_LOGICAL_AND
-%right T_PRINT
-%right T_YIELD
-%right T_DOUBLE_ARROW
-%right T_YIELD_FROM
-%left '=' 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_POW_EQUAL T_COALESCE_EQUAL
-%left '?' ':'
-%right T_COALESCE
-%left T_BOOLEAN_OR
-%left T_BOOLEAN_AND
-%left '|'
-%left '^'
-%left T_AMPERSAND_NOT_FOLLOWED_BY_VAR_OR_VARARG T_AMPERSAND_FOLLOWED_BY_VAR_OR_VARARG
-%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 '*' '/' '%'
-%right '!'
-%nonassoc T_INSTANCEOF
-%right '~' T_INC T_DEC T_INT_CAST T_DOUBLE_CAST T_STRING_CAST T_ARRAY_CAST T_OBJECT_CAST T_BOOL_CAST T_UNSET_CAST '@'
-%right T_POW
-%right '['
-%nonassoc T_NEW T_CLONE
-%token T_EXIT
-%token T_IF
-%left T_ELSEIF
-%left T_ELSE
-%left T_ENDIF
-%token T_LNUMBER
-%token T_DNUMBER
-%token T_STRING
-%token T_STRING_VARNAME
-%token T_VARIABLE
-%token T_NUM_STRING
-%token T_INLINE_HTML
-%token T_ENCAPSED_AND_WHITESPACE
-%token T_CONSTANT_ENCAPSED_STRING
-%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_MATCH
-%token T_ENDSWITCH
-%token T_CASE
-%token T_DEFAULT
-%token T_BREAK
-%token T_CONTINUE
-%token T_GOTO
-%token T_FUNCTION
-%token T_FN
-%token T_CONST
-%token T_RETURN
-%token T_TRY
-%token T_CATCH
-%token T_FINALLY
-%token T_THROW
-%token T_USE
-%token T_INSTEADOF
-%token T_GLOBAL
-%right T_STATIC T_ABSTRACT T_FINAL T_PRIVATE T_PROTECTED T_PUBLIC T_READONLY
-%token T_VAR
-%token T_UNSET
-%token T_ISSET
-%token T_EMPTY
-%token T_HALT_COMPILER
-%token T_CLASS
-%token T_TRAIT
-%token T_INTERFACE
-%token T_ENUM
-%token T_EXTENDS
-%token T_IMPLEMENTS
-%token T_OBJECT_OPERATOR
-%token T_NULLSAFE_OBJECT_OPERATOR
-%token T_DOUBLE_ARROW
-%token T_LIST
-%token T_ARRAY
-%token T_CALLABLE
-%token T_CLASS_C
-%token T_TRAIT_C
-%token T_METHOD_C
-%token T_FUNC_C
-%token T_LINE
-%token T_FILE
-%token T_START_HEREDOC
-%token T_END_HEREDOC
-%token T_DOLLAR_OPEN_CURLY_BRACES
-%token T_CURLY_OPEN
-%token T_PAAMAYIM_NEKUDOTAYIM
-%token T_NAMESPACE
-%token T_NS_C
-%token T_DIR
-%token T_NS_SEPARATOR
-%token T_ELLIPSIS
-%token T_NAME_FULLY_QUALIFIED
-%token T_NAME_QUALIFIED
-%token T_NAME_RELATIVE
-%token T_ATTRIBUTE
-%token T_ENUM