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// Copyright 2024 Jeff Trull.
//
// 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
// There are some tricky corner cases that occur when Wave handles large inputs.
// Tokens at, near, or crossing the boundary at which a "fill" occurs can
// interact in unexpected ways. This test is intended to increase code
// coverage for such situations.
#include <boost/wave/cpplexer/re2clex/cpp_re.hpp> // for BOOST_WAVE_BSIZE
#include <boost/wave.hpp>
#include <boost/wave/token_ids.hpp>
#include <boost/wave/cpplexer/cpp_lex_token.hpp>
#include <boost/wave/cpplexer/cpp_lex_iterator.hpp>
#include <string>
using token_t = boost::wave::cpplexer::lex_token<>;
using lex_iter_t = boost::wave::cpplexer::lex_iterator<token_t>;
using ctx_t = boost::wave::context<
std::string::iterator, lex_iter_t,
boost::wave::iteration_context_policies::load_file_to_string,
boost::wave::context_policies::default_preprocessing_hooks>;
int main() {
using namespace boost::wave;
// construct input with a trigraph in a tricky spot
constexpr std::size_t space_count = BOOST_WAVE_BSIZE - 18;
auto inp_txt = std::string(space_count, ' ') + ";";
// add in pound trigraph one character at a time
// otherwise, the string literal may get translated by the compiler
inp_txt.push_back('?');
inp_txt.push_back('?');
inp_txt.push_back('=');
inp_txt += " auto foo = bar;\n";
ctx_t ctx( inp_txt.begin(), inp_txt.end(), "longfile.cpp" );
auto it = ctx.begin();
if (token_id(*it) != T_SPACE)
return 1;
if (it->get_value().size() != space_count)
return 2;
++it;
if (token_id(*it) != T_SEMICOLON)
return 3;
++it;
if (token_id(*it) != T_POUND_TRIGRAPH)
return 4;
++it;
if (token_id(*it) != T_SPACE)
return 5;
++it;
if (token_id(*it) != T_AUTO)
return 6;
return 0;
}
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