diff --git a/CommonCheck.cpp b/CommonCheck.cpp
index d90eb1ba0..17a12be30 100644
--- a/CommonCheck.cpp
+++ b/CommonCheck.cpp
@@ -19,3 +19,16 @@ void ReportErr(const std::string errmsg)
 }
 //---------------------------------------------------------------------------
 
+bool IsName(const char str[])
+{
+    return (str[0]=='_' || std::isalpha(str[0]));
+}
+//---------------------------------------------------------------------------
+
+bool IsNumber(const char str[])
+{
+    return std::isdigit(str[0]);
+}
+//---------------------------------------------------------------------------
+
+
diff --git a/CommonCheck.h b/CommonCheck.h
index 112eae154..a6ae635cf 100644
--- a/CommonCheck.h
+++ b/CommonCheck.h
@@ -11,5 +11,9 @@ std::string FileLine(TOKEN *tok);
 
 void ReportErr(const std::string errmsg);
 
+
+bool IsName(const char str[]);
+bool IsNumber(const char str[]);
+
 //---------------------------------------------------------------------------
 #endif