From c330fda0cfe72cc3b900b386ff68da62b45bff7a Mon Sep 17 00:00:00 2001
From: Pavel Shevaev <pacha.shevaev@gmail.com>
Date: Mon, 20 Jan 2025 20:12:19 +0300
Subject: [PATCH] Adding initial support for services only events

---
 metagen.inc.php | 16 ++++++++++++++--
 parser2.inc.php | 36 ++++++++++++++++++++++++++++++++++++
 2 files changed, 50 insertions(+), 2 deletions(-)

diff --git a/metagen.inc.php b/metagen.inc.php
index 0c57110..4724cde 100644
--- a/metagen.inc.php
+++ b/metagen.inc.php
@@ -586,6 +586,7 @@ class mtgMetaService extends mtgMetaUnit implements mtgScope
   private $name;
   private $parent_scope;
   private $rpcs = array();
+  private $events = array();
   private $user_types = array();
 
   function __construct($name, mtgScope $parent_scope, array $tokens = array())
@@ -615,7 +616,7 @@ class mtgMetaService extends mtgMetaUnit implements mtgScope
     return $this->parent_scope->findSymbol($name);
   }
 
-  function getRPCs()
+  function getRPCs() : array
   {
     return $this->rpcs;
   }
@@ -646,7 +647,7 @@ class mtgMetaService extends mtgMetaUnit implements mtgScope
     return $this->rpcs[$name];
   }
 
-  function getUserTypes()
+  function getUserTypes() : array
   {
     return $this->user_types;
   }
@@ -671,6 +672,17 @@ class mtgMetaService extends mtgMetaUnit implements mtgScope
     return $this->user_types[$name];
   }
 
+  function addEvent(mtgMetaStruct $evt)
+  {
+    $this->events[] = $evt;
+    $this->addUserStruct($evt);
+  }
+
+  function getEvents() : array
+  {
+    return $this->events;
+  }
+
   function getClassId()
   {
     if($this->hasToken('class_id'))
diff --git a/parser2.inc.php b/parser2.inc.php
index 25e1ac0..5635d14 100644
--- a/parser2.inc.php
+++ b/parser2.inc.php
@@ -31,6 +31,7 @@ class mtgMetaInfoParser2 implements mtgIMetaInfoParser
   const T_bool               = 1030;
   const T_blob               = 1031;
   const T_Service            = 1032;
+  const T_Event              = 1033;
   const T_MaxType            = 1034; //built-in types end mark
 
   private array $config = array();
@@ -95,6 +96,7 @@ class mtgMetaInfoParser2 implements mtgIMetaInfoParser
       "extends" => self::T_Extends,
       "implements" => self::T_Implements,
       "func" => self::T_Func,
+      "event" => self::T_Event,
     ];
 
     $this->T2descr = array_flip($this->symbol2T);
@@ -113,6 +115,7 @@ class mtgMetaInfoParser2 implements mtgIMetaInfoParser
     $this->T2descr[self::T_Extends] = '<extends>';
     $this->T2descr[self::T_Implements] = '<implements>';
     $this->T2descr[self::T_Func] = '<func>';
+    $this->T2descr[self::T_Event] = '<Event>';
   }
 
   private static function _addDefaultTokens(array &$config)
@@ -574,6 +577,37 @@ class mtgMetaInfoParser2 implements mtgIMetaInfoParser
     $this->_addUnit(new mtgMetaInfoUnit($this->module, $fn));
   }
 
+  private function _parseEvent() : mtgMetaStruct 
+  {
+    $this->_nextT();
+    $struct_origin = new mtgOrigin($this->file, $this->line);
+    $name = $this->_parseDotName();
+
+    $this->_checkThenNext(ord('{'));
+
+    $s = new mtgMetaStruct($name, array(), null, array(), array());
+    $s->setOrigin($struct_origin);
+
+    $tokens = $this->shared_tokens;
+    if($this->T == self::T_Prop)
+      $tokens = array_merge($tokens, $this->_parsePropTokens());
+    $s->setTokens($tokens);
+
+    $flds = $this->_parseFields(
+      function()
+      { 
+        if($this->_nextIf(ord('}')))
+          return true;
+        if($this->_nextIf(self::T_Func)) 
+          $this->_error("Events don't support functions");
+      }
+    );
+    foreach($flds as $fld)
+      $s->addField($fld);
+
+    return $s;
+  }
+
   private function _parseStruct()
   {
     $this->_nextT();
@@ -719,6 +753,8 @@ class mtgMetaInfoParser2 implements mtgIMetaInfoParser
         $service->addRPC($this->_parseRPC(false));
       else if($this->T == self::T_Enum)
         $service->addUserType($this->_parseEnum(false));
+      else if($this->T == self::T_Event)
+        $service->addUserType($this->_parseEvent());
       else
         $this->_error("Unsupported type");
     }