1 files changed, 51 insertions, 0 deletions
diff --git a/protocols/Telegram/tdlib/td/example/android/AddIntDef.php b/protocols/Telegram/tdlib/td/example/android/AddIntDef.php
new file mode 100644
index 0000000000..d4ae4a65bd
--- /dev/null
+++ b/protocols/Telegram/tdlib/td/example/android/AddIntDef.php
@@ -0,0 +1,51 @@
+<?php
+    if ($argc !== 2) {
+        exit();
+    }
+    $file = file_get_contents($argv[1]);
+
+    if (strpos($file, 'androidx.annotation.IntDef') !== false) {
+        exit();
+    }
+
+    $file = str_replace('import androidx.annotation.Nullable;', 'import androidx.annotation.IntDef;'.PHP_EOL.
+                                                                'import androidx.annotation.Nullable;'.PHP_EOL.
+                                                                PHP_EOL.
+                                                                'import java.lang.annotation.Retention;'.PHP_EOL.
+                                                                'import java.lang.annotation.RetentionPolicy;'.PHP_EOL, $file);
+
+    preg_match_all('/public static class ([A-Za-z0-9]+) extends ([A-Za-z0-9]+)/', $file, $matches, PREG_SET_ORDER);
+    $children = [];
+    foreach ($matches as $val) {
+        if ($val[2] === 'Object') {
+            continue;
+        }
+
+        $children[$val[2]][] = '            '.$val[1].'.CONSTRUCTOR';
+    }
+
+    $file = preg_replace_callback('/public abstract static class ([A-Za-z0-9]+)(<R extends Object>)? extends Object [{]/',
+        function ($val) use ($children) {
+            $values = implode(','.PHP_EOL, $children[$val[1]]);
+            return $val[0].<<<EOL
+
+        /**
+         * Describes possible values returned by getConstructor().
+         */
+        @Retention(RetentionPolicy.SOURCE)
+        @IntDef({
+$values
+        })
+        public @interface Constructors {}
+
+        /**
+         * @return identifier uniquely determining type of the object.
+         */
+        @Constructors
+        @Override
+        public abstract int getConstructor();
+EOL;
+        },
+        $file);
+
+    file_put_contents($argv[1], $file);