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

   1 //  Copyright (c) 2001-2010 Hartmut Kaiser
   2 //  Copyright (c) 2010 Sergey "GooRoo" Olendarenko
   3 //
   4 //  Distributed under the Boost Software License, Version 1.0. (See accompanying
   5 //  file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
   6
   7 #include <cstdlib>
   8 #include <iostream>
   9 #include <locale>
  10 #include <string>
  11
  12 #include <boost/spirit/include/lex_lexertl.hpp>
  13 #include <boost/phoenix/function.hpp>
  14 #include <boost/phoenix/operator.hpp>
  15
  16 #include <boost/core/lightweight_test.hpp>
  17
  18 namespace lex = boost::spirit::lex;
  19 namespace phoenix = boost::phoenix;
  20
  21 typedef std::basic_string<wchar_t> wstring_type;
  22
  23 ///////////////////////////////////////////////////////////////////////////////
  24 enum tokenids
  25 {
  26     ID_IDENT = 1,
  27     ID_CONSTANT,
  28     ID_OPERATION,
  29     ID_BRACKET
  30 };
  31
  32 ///////////////////////////////////////////////////////////////////////////////
  33 struct test_data
  34 {
  35     tokenids     tokenid;
  36     wstring_type value;
  37 };
  38
  39 // alpha+x1*(2.836-x2[i])
  40 test_data data[] =
  41 {
  42     { ID_IDENT, L"alpha" },
  43     { ID_OPERATION, L"+" },
  44     { ID_IDENT, L"x1" },
  45     { ID_OPERATION, L"*" },
  46     { ID_BRACKET, L"(" },
  47     { ID_CONSTANT, L"2.836" },
  48     { ID_OPERATION, L"-" },
  49     { ID_IDENT, L"x2" },
  50     { ID_BRACKET, L"[" },
  51     { ID_IDENT, L"i" },
  52     { ID_BRACKET, L"]" },
  53     { ID_BRACKET, L")" }
  54 };
  55
  56 ///////////////////////////////////////////////////////////////////////////////
  57 struct test_impl
  58 {
  59     typedef void result_type;
  60     template <typename TokenId, typename Value>
  61     struct result { typedef void type; };
  62
  63     template <typename TokenId, typename Value>
  64     void operator()(TokenId const& tokenid, Value const& val) const
  65     {
  66         BOOST_TEST(sequence_counter < sizeof(data)/sizeof(data[0]));
  67         BOOST_TEST(data[sequence_counter].tokenid == tokenids(tokenid));
  68         BOOST_TEST(0 == val.which());
  69
  70         typedef boost::iterator_range<wstring_type::iterator> iterator_range;
  71         iterator_range r = boost::get<iterator_range>(val);
  72         BOOST_TEST(data[sequence_counter].value ==
  73             wstring_type(r.begin(), r.end()));
  74
  75         ++sequence_counter;
  76     }
  77
  78     static std::size_t sequence_counter;
  79 };
  80 std::size_t test_impl::sequence_counter = 0;
  81
  82 phoenix::function<test_impl> const test = test_impl();
  83
  84 ///////////////////////////////////////////////////////////////////////////////
  85 template <typename Lexer>
  86 struct mega_tokens : lex::lexer<Lexer>
  87 {
  88     mega_tokens()
  89         : identifier(L"[a-zA-Z_][a-zA-Z0-9_]*", ID_IDENT)
  90         , constant  (L"[0-9]+(\\.[0-9]+)?", ID_CONSTANT)
  91         , operation (L"[\\+\\-\\*/]", ID_OPERATION)
  92         , bracket   (L"[\\(\\)\\[\\]]", ID_BRACKET)
  93     {
  94         using lex::_tokenid;
  95         using lex::_val;
  96
  97         this->self
  98             = operation  [ test(_tokenid, _val) ]
  99             | identifier [ test(_tokenid, _val) ]
 100             | constant   [ test(_tokenid, _val) ]
 101             | bracket    [ test(_tokenid, _val) ]
 102         ;
 103     }
 104
 105     lex::token_def<wstring_type, wchar_t, tokenids> identifier;
 106     lex::token_def<double, wchar_t, tokenids> constant;
 107     lex::token_def<wchar_t, wchar_t, tokenids> operation;
 108     lex::token_def<wchar_t, wchar_t, tokenids> bracket;
 109 };
 110
 111 ///////////////////////////////////////////////////////////////////////////////
 112 int main()
 113 {
 114     typedef wstring_type::iterator base_iterator;
 115     typedef lex::lexertl::token<
 116         base_iterator, boost::mpl::vector<wchar_t, wstring_type, double>
 117       , boost::mpl::true_, tokenids
 118     > token_type;
 119     typedef lex::lexertl::actor_lexer<token_type> lexer_type;
 120
 121     mega_tokens<lexer_type> mega_lexer;
 122
 123     wstring_type exampleStr = L"alpha+x1*(2.836-x2[i])";
 124     base_iterator first = exampleStr.begin();
 125
 126     BOOST_TEST(lex::tokenize(first, exampleStr.end(), mega_lexer));
 127     BOOST_TEST(test_impl::sequence_counter == sizeof(data)/sizeof(data[0]));
 128
 129     return boost::report_errors();
 130 }