ceph/src/boost/libs/spirit/test/lex/lexertl2.cpp

   1 //  Copyright (c) 2001-2011 Hartmut Kaiser
   2 //
   3 //  Distributed under the Boost Software License, Version 1.0. (See accompanying
   4 //  file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
   5
   6 #include <boost/spirit/include/lex_lexertl.hpp>
   7 #include <string>
   8
   9 #include "test.hpp"
  10
  11 ///////////////////////////////////////////////////////////////////////////////
  12 // a simple lexer class
  13 template <typename Lexer>
  14 struct lexertl_test
  15   : boost::spirit::lex::lexer<Lexer>
  16 {
  17     typedef boost::spirit::lex::token_def<std::string> token_def;
  18
  19     static std::size_t const CCOMMENT = 1;
  20     static std::size_t const CPPCOMMENT = 2;
  21
  22     lexertl_test()
  23       : c_comment("\\/\\*[^*]*\\*+([^/*][^*]*\\*+)*\\/", CCOMMENT)
  24       , cpp_comment("\\/\\/[^\\n\\r]*(\\n|\\r|\\r\\n)", CPPCOMMENT)
  25     {
  26         this->self = c_comment;
  27         this->self += cpp_comment;
  28     }
  29
  30     token_def c_comment, cpp_comment;
  31 };
  32
  33 template <typename Lexer>
  34 struct wlexertl_test
  35   : boost::spirit::lex::lexer<Lexer>
  36 {
  37     typedef boost::spirit::lex::token_def<std::basic_string<wchar_t>, wchar_t>
  38         token_def;
  39
  40     static std::size_t const CCOMMENT = 1;
  41     static std::size_t const CPPCOMMENT = 2;
  42
  43     wlexertl_test()
  44       : c_comment(L"\\/\\*[^*]*\\*+([^/*][^*]*\\*+)*\\/", CCOMMENT)
  45       , cpp_comment(L"\\/\\/[^\\n\\r]*(\\n|\\r|\\r\\n)", CPPCOMMENT)
  46     {
  47         this->self = c_comment;
  48         this->self += cpp_comment;
  49     }
  50
  51     token_def c_comment, cpp_comment;
  52 };
  53
  54 ///////////////////////////////////////////////////////////////////////////////
  55 int main()
  56 {
  57     using namespace boost::spirit;
  58     using namespace spirit_test;
  59
  60     // the following test aims at the low level lexer_ and token_ objects,
  61     // normally not visible/used by the user
  62     {
  63         // initialize lexer
  64         typedef std::string::iterator base_iterator_type;
  65         typedef lex::lexertl::token<base_iterator_type> token_type;
  66         typedef lex::lexertl::lexer<token_type> lexer_type;
  67         typedef lexertl_test<lexer_type> lexer_def;
  68
  69         // test lexer for two different input strings
  70         lexer_def lex;
  71         BOOST_TEST(test (lex, "/* this is a comment */", lexer_def::CCOMMENT));
  72         BOOST_TEST(test (lex, "// this is a comment as well\n", lexer_def::CPPCOMMENT));
  73     }
  74
  75     {
  76         // initialize lexer
  77         typedef std::basic_string<wchar_t>::iterator base_iterator_type;
  78         typedef lex::lexertl::token<base_iterator_type> token_type;
  79         typedef lex::lexertl::lexer<token_type> lexer_type;
  80         typedef wlexertl_test<lexer_type> lexer_def;
  81
  82         // test lexer for two different input strings
  83         lexer_def lex;
  84         BOOST_TEST(test (lex, L"/* this is a comment */", lexer_def::CCOMMENT));
  85         BOOST_TEST(test (lex, L"// this is a comment as well\n", lexer_def::CPPCOMMENT));
  86     }
  87
  88     return boost::report_errors();
  89 }
  90