ceph/src/boost/tools/inspect/minmax_check.cpp

   1 //  minmax_check implementation  --------------------------------------------//
   2
   3 //  Copyright Beman Dawes   2002.
   4 //  Copyright Gennaro Prota 2006.
   5 //
   6 //  Distributed under the Boost Software License, Version 1.0.
   7 //  (See accompanying file LICENSE_1_0.txt or copy at
   8 //  http://www.boost.org/LICENSE_1_0.txt)
   9
  10
  11 #include <algorithm>
  12
  13 #include "minmax_check.hpp"
  14 #include "boost/regex.hpp"
  15 #include "boost/lexical_cast.hpp"
  16
  17 namespace
  18 {
  19   boost::regex minmax_regex(
  20     "("
  21     "^\\s*#\\s*undef\\s*" // # undef
  22     "\\b(min|max)\\b"     // followed by min or max, whole word
  23     ")"
  24     "|"                   // or (ignored)
  25     "("
  26     "//[^\\n]*"           // single line comments (//)
  27     "|"
  28     "/\\*.*?\\*/"         // multi line comments (/**/)
  29     "|"
  30     "\"(?:\\\\\\\\|\\\\\"|[^\"])*\"" // string literals
  31     ")"
  32     "|"                   // or
  33     "("
  34     "\\b(min|max)\\b" // min or max, whole word
  35     "\\s*\\("         // followed by 0 or more spaces and an opening paren
  36     ")"
  37     , boost::regex::normal);
  38
  39 } // unnamed namespace
  40
  41 namespace boost
  42 {
  43   namespace inspect
  44   {
  45
  46     //  minmax_check constructor  -------------------------------------------//
  47
  48     minmax_check::minmax_check()
  49       : m_errors(0)
  50     {
  51       // C/C++ source code...
  52       register_signature( ".c" );
  53       register_signature( ".cpp" );
  54       register_signature( ".cxx" );
  55       register_signature( ".h" );
  56       register_signature( ".hpp" );
  57       register_signature( ".hxx" );
  58       register_signature( ".inc" );
  59       register_signature( ".ipp" );
  60     }
  61
  62     //  inspect ( C++ source files )  ---------------------------------------//
  63
  64     void minmax_check::inspect(
  65       const string & library_name,
  66       const path & full_path,      // example: c:/foo/boost/filesystem/path.hpp
  67       const string & contents)     // contents of file to be inspected
  68     {
  69       if (contents.find( "boostinspect:" "nominmax" ) != string::npos) return;
  70
  71       boost::sregex_iterator cur(contents.begin(), contents.end(), minmax_regex), end;
  72
  73       for( ; cur != end; ++cur /*, ++m_errors*/ )
  74       {
  75
  76         if(!(*cur)[3].matched)
  77         {
  78           string::const_iterator it = contents.begin();
  79           string::const_iterator match_it = (*cur)[0].first;
  80
  81           string::const_iterator line_start = it;
  82
  83           string::size_type line_number = 1;
  84           for ( ; it != match_it; ++it) {
  85               if (string::traits_type::eq(*it, '\n')) {
  86                   ++line_number;
  87                   line_start = it + 1; // could be end()
  88               }
  89           }
  90
  91           ++m_errors;
  92           error( library_name, full_path, string(name())
  93               + " violation of Boost min/max guidelines on line "
  94               + boost::lexical_cast<string>( line_number ) );
  95         }
  96
  97       }
  98     }
  99
 100   } // namespace inspect
 101 } // namespace boost
 102