--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/eric7/QScintilla/Lexers/LexerContainer.py	Thu Jul 07 11:23:56 2022 +0200
@@ -0,0 +1,78 @@
+# -*- coding: utf-8 -*-
+
+# Copyright (c) 2008 - 2022 Detlev Offenbach <detlev@die-offenbachs.de>
+#
+
+"""
+Module implementing a base class for custom lexers.
+"""
+
+from PyQt6.Qsci import QsciLexer
+
+from .Lexer import Lexer
+
+
+class LexerContainer(Lexer, QsciLexer):
+    """
+    Subclass as a base for the implementation of custom lexers.
+    """
+    def __init__(self, parent=None):
+        """
+        Constructor
+        
+        @param parent parent widget of this lexer
+        """
+        QsciLexer.__init__(self, parent)
+        Lexer.__init__(self)
+        
+        self.editor = parent
+    
+    def language(self):
+        """
+        Public method returning the language of the lexer.
+        
+        @return language of the lexer (string)
+        """
+        return "Container"
+    
+    def lexer(self):
+        """
+        Public method returning the type of the lexer.
+        
+        @return type of the lexer (string)
+        """
+        if hasattr(self, 'lexerId'):
+            return None
+        else:
+            return "container"
+    
+    def description(self, style):
+        """
+        Public method returning the descriptions of the styles supported
+        by the lexer.
+        
+        <b>Note</b>: This methods needs to be overridden by the lexer class.
+        
+        @param style style number (integer)
+        @return description for the given style (string)
+        """
+        return ""
+    
+    def styleText(self, start, end):
+        """
+        Public method to perform the styling.
+        
+        @param start position of first character to be styled (integer)
+        @param end position of last character to be styled (integer)
+        """
+        self.editor.startStyling(start, 0x1f)
+        self.editor.setStyling(end - start + 1, 0)
+    
+    def keywords(self, kwSet):
+        """
+        Public method to get the keywords.
+        
+        @param kwSet number of the keyword set (integer)
+        @return string giving the keywords (string) or None
+        """
+        return Lexer.keywords(self, kwSet)