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1 /*=============================================================================
2 Boost.Wave: A Standard compliant C++ preprocessor library
3 Explicit instantiation of the lex_functor generation function
4
5 http://www.boost.org/
6
7 Copyright (c) 2001-2012 Hartmut Kaiser. Distributed under the Boost
8 Software License, Version 1.0. (See accompanying file
9 LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
10 =============================================================================*/
11
12 #define BOOST_WAVE_SOURCE 1
13
14 // disable stupid compiler warnings
15 #include <boost/config/warning_disable.hpp>
16 #include <boost/wave/wave_config.hpp> // configuration data
17
18 #if BOOST_WAVE_SEPARATE_LEXER_INSTANTIATION != 0
19
20 #include <string>
21
22 #include <boost/wave/token_ids.hpp>
23 #include <boost/wave/cpplexer/cpp_lex_token.hpp>
24 #include <boost/wave/cpplexer/cpp_lex_iterator.hpp>
25
26 ///////////////////////////////////////////////////////////////////////////////
27 // The following file needs to be included only once throughout the whole
28 // program.
29 #include <boost/wave/cpplexer/re2clex/cpp_re2c_lexer.hpp>
30
31 // this must occur after all of the includes and before any code appears
32 #ifdef BOOST_HAS_ABI_HEADERS
33 #include BOOST_ABI_PREFIX
34 #endif
35
36 ///////////////////////////////////////////////////////////////////////////////
37 //
38 // This instantiates the correct 'new_lexer' function, which generates the
39 // C++ lexer used in this sample. You will have to instantiate the
40 // new_lexer_gen<> template with the same iterator type, as you have used for
41 // instantiating the boost::wave::context<> object.
42 //
43 // This is moved into a separate compilation unit to decouple the compilation
44 // of the C++ lexer from the compilation of the other modules, which helps to
45 // reduce compilation time.
46 //
47 // The template parameter(s) supplied should be identical to the first
48 // parameter supplied while instantiating the boost::wave::context<> template
49 // (see the file cpp.cpp).
50 //
51 ///////////////////////////////////////////////////////////////////////////////
52
53 // if you want to use another iterator type for the underlying input stream
54 // a corresponding explicit template instantiation needs to be added below
55 template struct BOOST_SYMBOL_VISIBLE boost::wave::cpplexer::new_lexer_gen<
56 BOOST_WAVE_STRINGTYPE::iterator>;
57 template struct BOOST_SYMBOL_VISIBLE boost::wave::cpplexer::new_lexer_gen<
58 BOOST_WAVE_STRINGTYPE::const_iterator>;
59
60 // the suffix header occurs after all of the code
61 #ifdef BOOST_HAS_ABI_HEADERS
62 #include BOOST_ABI_SUFFIX
63 #endif
64
65 #endif // BOOST_WAVE_SEPARATE_LEXER_INSTANTIATION != 0