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libcarla/include/system/boost/beast/http/impl/serializer.hpp
LiXiaoqi 220ecf68c6 init
2024-10-18 13:19:59 +08:00

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//
// Copyright (c) 2016-2019 Vinnie Falco (vinnie dot falco at gmail dot com)
//
// 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)
//
// Official repository: https://github.com/boostorg/beast
//
#ifndef BOOST_BEAST_HTTP_IMPL_SERIALIZER_HPP
#define BOOST_BEAST_HTTP_IMPL_SERIALIZER_HPP
#include <boost/beast/core/buffer_traits.hpp>
#include <boost/beast/core/detail/buffers_ref.hpp>
#include <boost/beast/http/error.hpp>
#include <boost/beast/http/status.hpp>
#include <boost/beast/core/detail/config.hpp>
#include <boost/assert.hpp>
#include <ostream>
namespace boost {
namespace beast {
namespace http {
template<
bool isRequest, class Body, class Fields>
void
serializer<isRequest, Body, Fields>::
fwrinit(std::true_type)
{
fwr_.emplace(m_, m_.version(), m_.method());
}
template<
bool isRequest, class Body, class Fields>
void
serializer<isRequest, Body, Fields>::
fwrinit(std::false_type)
{
fwr_.emplace(m_, m_.version(), m_.result_int());
}
template<
bool isRequest, class Body, class Fields>
template<std::size_t I, class Visit>
inline
void
serializer<isRequest, Body, Fields>::
do_visit(error_code& ec, Visit& visit)
{
pv_.template emplace<I>(limit_, v_.template get<I>());
visit(ec, beast::detail::make_buffers_ref(
pv_.template get<I>()));
}
//------------------------------------------------------------------------------
template<
bool isRequest, class Body, class Fields>
serializer<isRequest, Body, Fields>::
serializer(value_type& m)
: m_(m)
, wr_(m_.base(), m_.body())
{
}
template<
bool isRequest, class Body, class Fields>
template<class Visit>
void
serializer<isRequest, Body, Fields>::
next(error_code& ec, Visit&& visit)
{
switch(s_)
{
case do_construct:
{
fwrinit(std::integral_constant<bool,
isRequest>{});
if(m_.chunked())
goto go_init_c;
s_ = do_init;
BOOST_FALLTHROUGH;
}
case do_init:
{
wr_.init(ec);
if(ec)
return;
if(split_)
goto go_header_only;
auto result = wr_.get(ec);
if(ec == error::need_more)
goto go_header_only;
if(ec)
return;
if(! result)
goto go_header_only;
more_ = result->second;
v_.template emplace<2>(
boost::in_place_init,
fwr_->get(),
result->first);
s_ = do_header;
BOOST_FALLTHROUGH;
}
case do_header:
do_visit<2>(ec, visit);
break;
go_header_only:
v_.template emplace<1>(fwr_->get());
s_ = do_header_only;
BOOST_FALLTHROUGH;
case do_header_only:
do_visit<1>(ec, visit);
break;
case do_body:
s_ = do_body + 1;
BOOST_FALLTHROUGH;
case do_body + 1:
{
auto result = wr_.get(ec);
if(ec)
return;
if(! result)
goto go_complete;
more_ = result->second;
v_.template emplace<3>(result->first);
s_ = do_body + 2;
BOOST_FALLTHROUGH;
}
case do_body + 2:
do_visit<3>(ec, visit);
break;
//----------------------------------------------------------------------
go_init_c:
s_ = do_init_c;
BOOST_FALLTHROUGH;
case do_init_c:
{
wr_.init(ec);
if(ec)
return;
if(split_)
goto go_header_only_c;
auto result = wr_.get(ec);
if(ec == error::need_more)
goto go_header_only_c;
if(ec)
return;
if(! result)
goto go_header_only_c;
more_ = result->second;
if(! more_)
{
// do it all in one buffer
v_.template emplace<7>(
boost::in_place_init,
fwr_->get(),
buffer_bytes(result->first),
net::const_buffer{nullptr, 0},
chunk_crlf{},
result->first,
chunk_crlf{},
detail::chunk_last(),
net::const_buffer{nullptr, 0},
chunk_crlf{});
goto go_all_c;
}
v_.template emplace<4>(
boost::in_place_init,
fwr_->get(),
buffer_bytes(result->first),
net::const_buffer{nullptr, 0},
chunk_crlf{},
result->first,
chunk_crlf{});
s_ = do_header_c;
BOOST_FALLTHROUGH;
}
case do_header_c:
do_visit<4>(ec, visit);
break;
go_header_only_c:
v_.template emplace<1>(fwr_->get());
s_ = do_header_only_c;
BOOST_FALLTHROUGH;
case do_header_only_c:
do_visit<1>(ec, visit);
break;
case do_body_c:
s_ = do_body_c + 1;
BOOST_FALLTHROUGH;
case do_body_c + 1:
{
auto result = wr_.get(ec);
if(ec)
return;
if(! result)
goto go_final_c;
more_ = result->second;
if(! more_)
{
// do it all in one buffer
v_.template emplace<6>(
boost::in_place_init,
buffer_bytes(result->first),
net::const_buffer{nullptr, 0},
chunk_crlf{},
result->first,
chunk_crlf{},
detail::chunk_last(),
net::const_buffer{nullptr, 0},
chunk_crlf{});
goto go_body_final_c;
}
v_.template emplace<5>(
boost::in_place_init,
buffer_bytes(result->first),
net::const_buffer{nullptr, 0},
chunk_crlf{},
result->first,
chunk_crlf{});
s_ = do_body_c + 2;
BOOST_FALLTHROUGH;
}
case do_body_c + 2:
do_visit<5>(ec, visit);
break;
go_body_final_c:
s_ = do_body_final_c;
BOOST_FALLTHROUGH;
case do_body_final_c:
do_visit<6>(ec, visit);
break;
go_all_c:
s_ = do_all_c;
BOOST_FALLTHROUGH;
case do_all_c:
do_visit<7>(ec, visit);
break;
go_final_c:
case do_final_c:
v_.template emplace<8>(
boost::in_place_init,
detail::chunk_last(),
net::const_buffer{nullptr, 0},
chunk_crlf{});
s_ = do_final_c + 1;
BOOST_FALLTHROUGH;
case do_final_c + 1:
do_visit<8>(ec, visit);
break;
//----------------------------------------------------------------------
default:
case do_complete:
BOOST_ASSERT(false);
break;
go_complete:
s_ = do_complete;
break;
}
}
template<
bool isRequest, class Body, class Fields>
void
serializer<isRequest, Body, Fields>::
consume(std::size_t n)
{
switch(s_)
{
case do_header:
BOOST_ASSERT(
n <= buffer_bytes(v_.template get<2>()));
v_.template get<2>().consume(n);
if(buffer_bytes(v_.template get<2>()) > 0)
break;
header_done_ = true;
v_.reset();
if(! more_)
goto go_complete;
s_ = do_body + 1;
break;
case do_header_only:
BOOST_ASSERT(
n <= buffer_bytes(v_.template get<1>()));
v_.template get<1>().consume(n);
if(buffer_bytes(v_.template get<1>()) > 0)
break;
fwr_ = boost::none;
header_done_ = true;
if(! split_)
goto go_complete;
s_ = do_body;
break;
case do_body + 2:
{
BOOST_ASSERT(
n <= buffer_bytes(v_.template get<3>()));
v_.template get<3>().consume(n);
if(buffer_bytes(v_.template get<3>()) > 0)
break;
v_.reset();
if(! more_)
goto go_complete;
s_ = do_body + 1;
break;
}
//----------------------------------------------------------------------
case do_header_c:
BOOST_ASSERT(
n <= buffer_bytes(v_.template get<4>()));
v_.template get<4>().consume(n);
if(buffer_bytes(v_.template get<4>()) > 0)
break;
header_done_ = true;
v_.reset();
if(more_)
s_ = do_body_c + 1;
else
s_ = do_final_c;
break;
case do_header_only_c:
{
BOOST_ASSERT(
n <= buffer_bytes(v_.template get<1>()));
v_.template get<1>().consume(n);
if(buffer_bytes(v_.template get<1>()) > 0)
break;
fwr_ = boost::none;
header_done_ = true;
if(! split_)
{
s_ = do_final_c;
break;
}
s_ = do_body_c;
break;
}
case do_body_c + 2:
BOOST_ASSERT(
n <= buffer_bytes(v_.template get<5>()));
v_.template get<5>().consume(n);
if(buffer_bytes(v_.template get<5>()) > 0)
break;
v_.reset();
if(more_)
s_ = do_body_c + 1;
else
s_ = do_final_c;
break;
case do_body_final_c:
{
BOOST_ASSERT(
n <= buffer_bytes(v_.template get<6>()));
v_.template get<6>().consume(n);
if(buffer_bytes(v_.template get<6>()) > 0)
break;
v_.reset();
s_ = do_complete;
break;
}
case do_all_c:
{
BOOST_ASSERT(
n <= buffer_bytes(v_.template get<7>()));
v_.template get<7>().consume(n);
if(buffer_bytes(v_.template get<7>()) > 0)
break;
header_done_ = true;
v_.reset();
s_ = do_complete;
break;
}
case do_final_c + 1:
BOOST_ASSERT(buffer_bytes(v_.template get<8>()));
v_.template get<8>().consume(n);
if(buffer_bytes(v_.template get<8>()) > 0)
break;
v_.reset();
goto go_complete;
//----------------------------------------------------------------------
default:
BOOST_ASSERT(false);
case do_complete:
break;
go_complete:
s_ = do_complete;
break;
}
}
} // http
} // beast
} // boost
#endif
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