From d8f728febf1ca43a3fa06926f2a5290daa3048a8 Mon Sep 17 00:00:00 2001
From: lwx916518 <lizhenhua12@huawei.com>
Date: Tue, 19 May 2020 19:26:39 +0800
Subject: [PATCH] Add function operator= for class ParserCallback

---
 ext_libs/muparser/muParserCallback.cpp | 16 ++++++++++++++++
 ext_libs/muparser/muParserCallback.h   |  1 +
 2 files changed, 17 insertions(+)

diff --git a/ext_libs/muparser/muParserCallback.cpp b/ext_libs/muparser/muParserCallback.cpp
index 2044fe1..27c5b08 100755
--- a/ext_libs/muparser/muParserCallback.cpp
+++ b/ext_libs/muparser/muParserCallback.cpp
@@ -386,6 +386,22 @@ namespace mu
     m_eOprtAsct  = ref.m_eOprtAsct;
   }
 
+  ParserCallback& ParserCallback::operator=(const ParserCallback& cb)
+  {
+    if (this != &cb)
+    {
+      m_pFun       = cb.m_pFun;
+      m_iArgc      = cb.m_iArgc;
+      m_bAllowOpti = cb.m_bAllowOpti;
+      m_iCode      = cb.m_iCode;
+      m_iType      = cb.m_iType;
+      m_iPri       = cb.m_iPri;
+      m_eOprtAsct  = cb.m_eOprtAsct;
+    }
+
+    return *this;
+  }
+
   //---------------------------------------------------------------------------
   /** \brief Clone this instance and return a pointer to the new instance. */
   ParserCallback* ParserCallback::Clone() const
diff --git a/ext_libs/muparser/muParserCallback.h b/ext_libs/muparser/muParserCallback.h
index ef32b49..e8e274d 100755
--- a/ext_libs/muparser/muParserCallback.h
+++ b/ext_libs/muparser/muParserCallback.h
@@ -81,6 +81,7 @@ public:
     ParserCallback(strfun_type3 a_pFun, bool a_bAllowOpti);
     ParserCallback();
     ParserCallback(const ParserCallback &a_Fun);
+    ParserCallback& operator=(const ParserCallback& cb);
     
     ParserCallback* Clone() const;
 
-- 
2.23.0