Add CLASS_ANONYMOUS flag

Pointed out by @tpunt

Author: nikic

README.md

@@ -183,6 +183,7 @@ ast\flags\CLASS_ABSTRACT
 ast\flags\CLASS_FINAL
 ast\flags\CLASS_TRAIT
 ast\flags\CLASS_INTERFACE
+ast\flags\CLASS_ANONYMOUS
 
 // Used by ast\AST_PARAM (exclusive)
 ast\flags\PARAM_REF

ast.c

@@ -481,6 +481,7 @@ PHP_MINIT_FUNCTION(ast) {
 	ast_register_flag_constant("CLASS_FINAL", ZEND_ACC_FINAL);
 	ast_register_flag_constant("CLASS_TRAIT", ZEND_ACC_TRAIT);
 	ast_register_flag_constant("CLASS_INTERFACE", ZEND_ACC_INTERFACE);
+	ast_register_flag_constant("CLASS_ANONYMOUS", ZEND_ACC_ANON_CLASS);
 
 	ast_register_flag_constant("PARAM_REF", ZEND_PARAM_REF);
 	ast_register_flag_constant("PARAM_VARIADIC", ZEND_PARAM_VARIADIC);

tests/class_types.phpt

@@ -0,0 +1,59 @@
+--TEST--
+Different class types
+--FILE--
+<?php
+
+require __DIR__ . '/../util.php';
+
+$code = <<<'PHP'
+<?php
+class A {}
+abstract class B {}
+final class C {}
+trait D {}
+interface E {}
+new class {};
+PHP;
+
+echo ast_dump(ast\parse_code($code, $version=20));
+
+?>
+--EXPECT--
+AST_STMT_LIST
+    0: AST_CLASS
+        flags: 0
+        name: A
+        0: null
+        1: null
+        2: AST_STMT_LIST
+    1: AST_CLASS
+        flags: CLASS_ABSTRACT (32)
+        name: B
+        0: null
+        1: null
+        2: AST_STMT_LIST
+    2: AST_CLASS
+        flags: CLASS_FINAL (4)
+        name: C
+        0: null
+        1: null
+        2: AST_STMT_LIST
+    3: AST_CLASS
+        flags: CLASS_TRAIT (128)
+        name: D
+        0: null
+        1: null
+        2: AST_STMT_LIST
+    4: AST_CLASS
+        flags: CLASS_INTERFACE (64)
+        name: E
+        0: null
+        1: null
+        2: AST_STMT_LIST
+    5: AST_NEW
+        0: AST_CLASS
+            flags: CLASS_ANONYMOUS (256)
+            0: null
+            1: null
+            2: AST_STMT_LIST
+        1: AST_ARG_LIST

util.php

@@ -60,6 +60,7 @@ function get_flag_info() : array {
             flags\CLASS_FINAL => 'CLASS_FINAL',
             flags\CLASS_TRAIT => 'CLASS_TRAIT',
             flags\CLASS_INTERFACE => 'CLASS_INTERFACE',
+            flags\CLASS_ANONYMOUS => 'CLASS_ANONYMOUS',
         ],
         ast\AST_PARAM => [
             flags\PARAM_REF => 'PARAM_REF',