Source : Free On-Line Dictionary of Computing

codewalker
     
         A program component that traverses other
        programs for a living.  {Compilers} have codewalkers in their
        front ends; so do {cross-reference generators} and some
        database front ends.  Other utility programs that try to do
        too much with source code may turn into codewalkers.  As in
        "This new 'vgrind' feature would require a codewalker to
        implement."
     
        [{Jargon File}]
     
        (1994-12-23)