# -*- coding: utf-8 -*-

import re
from pygments.lexer import RegexLexer, bygroups
from pygments.token import *

__all__ = ['LexLexer']

class LexLexer(RegexLexer):

    name = 'lex'
    aliases = ['flex']
    filenames = ['*.l']

    tokens = {
        'root': [
            (r'\%\{', Generic.Inserted, 'c_precode'),
            (r'^(\w+)(\s+)(.*)$', bygroups(Name.Variable, Text, String.Backtick)),
            (r'(\%x)(\s*)(.*)$', bygroups(Generic.Strong, Text, Keyword)),
            (r'\%\%', Generic.Inserted, 'actions'),
        ],
        
        'c_precode': [
            (r'\%\}', Generic.Inserted, 'root'),
 ],
    
        'actions': [
            (r'\%\%', Generic.Heading, 'epilogue'),
            (r'^\{\w+\}', Keyword),
 ],
    
        'epilogue': [
 ],
    }