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// Copyright 2018 Peter Dimov.
//
// Distributed under the Boost Software License, Version 1.0.
//
// See accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt
#include <boost/wave.hpp>
#include <boost/wave/cpplexer/cpp_lex_token.hpp>
#include <boost/wave/cpplexer/cpp_lex_iterator.hpp>
#include <iostream>
int main()
{
std::string input(
"#if 0\n"
"6.28\n"
"#else\n"
"3.14\n"
"#endif\n"
);
try
{
typedef boost::wave::cpplexer::lex_token<> token_type;
typedef boost::wave::cpplexer::lex_iterator<token_type> lex_iterator_type;
typedef boost::wave::context<std::string::iterator, lex_iterator_type> context_type;
context_type ctx( input.begin(), input.end(), "input.cpp" );
for( context_type::iterator_type first = ctx.begin(), last = ctx.end(); first != last; ++first )
{
std::cout << first->get_value();
}
return 0;
}
catch( boost::wave::cpp_exception const & x )
{
std::cerr << x.file_name() << "(" << x.line_no() << "): " << x.description() << std::endl;
return 1;
}
catch( std::exception const & x )
{
std::cerr << "Exception: " << x.what() << std::endl;
return 2;
}
}
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