From b41bd1a0ac4b55653940390e794953f0a016dca5 Mon Sep 17 00:00:00 2001
From: DerManoMann <mano@radebatz.net>
Date: Tue, 18 Aug 2020 15:01:29 +1200
Subject: [PATCH] Add support for new PHP8 T_NAME_xxx token

PHP8 related changes to namespace parsing.
---
 src/StaticAnalyser.php | 19 +++++++++++++------
 src/functions.php      |  8 ++++++++
 2 files changed, 21 insertions(+), 6 deletions(-)

diff --git a/src/StaticAnalyser.php b/src/StaticAnalyser.php
index adcaad382..30d8b064c 100644
--- a/src/StaticAnalyser.php
+++ b/src/StaticAnalyser.php
@@ -450,7 +450,7 @@ private function parseNamespace(&$tokens, &$token, $parseContext)
         $namespace = '';
         while ($token !== false) {
             $token = $this->nextToken($tokens, $parseContext);
-            if ($token[0] !== T_STRING && $token[0] !== T_NS_SEPARATOR) {
+            if (!in_array($token[0], [T_STRING, T_NS_SEPARATOR, T_NAME_QUALIFIED, T_NAME_FULLY_QUALIFIED])) {
                 break;
             }
             $namespace .= $token[1];
@@ -480,13 +480,20 @@ private function parseNamespaceList(&$tokens, &$token, $parseContext)
      */
     private function parseUseStatement(&$tokens, &$token, $parseContext)
     {
+        $normalizeAlias = function ($alias) {
+            $alias = ltrim($alias, '\\');
+            $elements = explode('\\', $alias);
+
+            return array_pop($elements);
+        };
+
         $class = '';
         $alias = '';
         $statements = [];
         $explicitAlias = false;
         while ($token !== false) {
             $token = $this->nextToken($tokens, $parseContext);
-            $isNameToken = $token[0] === T_STRING || $token[0] === T_NS_SEPARATOR;
+            $isNameToken = in_array($token[0], [T_STRING, T_NS_SEPARATOR, T_NAME_QUALIFIED, T_NAME_FULLY_QUALIFIED]);
             if (!$explicitAlias && $isNameToken) {
                 $class .= $token[1];
                 $alias = $token[1];
@@ -496,12 +503,12 @@ private function parseUseStatement(&$tokens, &$token, $parseContext)
                 $explicitAlias = true;
                 $alias = '';
             } elseif ($token === ',') {
-                $statements[$alias] = $class;
+                $statements[$normalizeAlias($alias)] = $class;
                 $class = '';
                 $alias = '';
                 $explicitAlias = false;
             } elseif ($token === ';') {
-                $statements[$alias] = $class;
+                $statements[$normalizeAlias($alias)] = $class;
                 break;
             } else {
                 break;
@@ -530,8 +537,8 @@ private function parseTypeAndNextToken(array &$tokens, Context $parseContext): a
         }
 
         // drill down namespace segments to basename property type declaration
-        while (in_array($token[0], [T_NS_SEPARATOR, T_STRING, T_ARRAY])) {
-            if ($token[0] === T_STRING) {
+        while (in_array($token[0], [T_NS_SEPARATOR, T_STRING, T_NAME_QUALIFIED, T_NAME_FULLY_QUALIFIED, T_ARRAY])) {
+            if (in_array($token[0], [T_STRING, T_NAME_QUALIFIED, T_NAME_FULLY_QUALIFIED])) {
                 $type = $token[1];
             }
             $token = $this->nextToken($tokens, $parseContext);
diff --git a/src/functions.php b/src/functions.php
index 6ebc86c55..c9004d7ad 100644
--- a/src/functions.php
+++ b/src/functions.php
@@ -18,6 +18,14 @@
     define('OpenApi\Processors\UNDEFINED', UNDEFINED);
 }
 
+if (false === defined('T_NAME_QUALIFIED')) {
+    /*
+     * PHP8 only token.
+     */
+    define('T_NAME_QUALIFIED', -1);
+    define('T_NAME_FULLY_QUALIFIED', -1);
+}
+
 if (function_exists('OpenApi\scan') === false) {
     /**
      * Scan the filesystem for OpenAPI annotations and build openapi-documentation.