MSM的状态转换表使用mpl::vector。默认最大大小为20。可以通过以下方式更改其大小：
#define BOOST_MPL_CFG_NO_PREPROCESSED_HEADERS
#define BOOST_MPL_LIMIT_VECTOR_SIZE 50
#define BOOST_MPL_LIMIT_MAP_SIZE 50
允许大小达到50。根据文档（https://www.boost.org/doc/libs/1_80_0/libs/msm/doc/HTML/ch05.html），通过添加（例如60）mpl/vector60.hpp和mpl/map60.hpp可以进一步增加大小。
在boost/mpl/vector中，我找到了vector50_c.hpp和vector50.hpp文件。vector50.hpp的内容为：
#ifndef BOOST_MPL_VECTOR_VECTOR50_HPP_INCLUDED
#define BOOST_MPL_VECTOR_VECTOR50_HPP_INCLUDED
// Copyright Aleksey Gurtovoy 2000-2004
//
// 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)
//
// See http://www.boost.org/libs/mpl for documentation.
// $Id$
// $Date$
// $Revision$
#if !defined(BOOST_MPL_PREPROCESSING_MODE)
# include <boost/mpl/vector/vector40.hpp>
#endif
#include <boost/mpl/aux_/config/use_preprocessed.hpp>
#if !defined(BOOST_MPL_CFG_NO_PREPROCESSED_HEADERS) \
&& !defined(BOOST_MPL_PREPROCESSING_MODE)
# define BOOST_MPL_PREPROCESSED_HEADER vector50.hpp
# include <boost/mpl/vector/aux_/include_preprocessed.hpp>
#else
# include <boost/mpl/aux_/config/typeof.hpp>
# include <boost/mpl/aux_/config/ctps.hpp>
# include <boost/preprocessor/iterate.hpp>
namespace boost { namespace mpl {
# define BOOST_PP_ITERATION_PARAMS_1 \
(3,(41, 50, <boost/mpl/vector/aux_/numbered.hpp>))
# include BOOST_PP_ITERATE()
}}
#endif // BOOST_MPL_CFG_NO_PREPROCESSED_HEADERS
#endif // BOOST_MPL_VECTOR_VECTOR50_HPP_INCLUDED
- 我需要添加一个vector60_c.hpp和vector60.hpp文件吗？(这两个文件有什么区别?)
- 我应该把它们放在哪里？在boost/mpl/vector内部吗？
- 我需要如何修改这个文件？
对于编写vector60.hpp的第一个猜测是:
#ifndef BOOST_MPL_VECTOR_VECTOR60_HPP_INCLUDED
#define BOOST_MPL_VECTOR_VECTOR60_HPP_INCLUDED
// Copyright Aleksey Gurtovoy 2000-2004
//
// 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)
//
// See http://www.boost.org/libs/mpl for documentation.
// $Id$
// $Date$
// $Revision$
#if !defined(BOOST_MPL_PREPROCESSING_MODE)
# include <boost/mpl/vector/vector50.hpp>
#endif
#include <boost/mpl/aux_/config/use_preprocessed.hpp>
#if !defined(BOOST_MPL_CFG_NO_PREPROCESSED_HEADERS) \
&& !defined(BOOST_MPL_PREPROCESSING_MODE)
# define BOOST_MPL_PREPROCESSED_HEADER vector60.hpp
# include <boost/mpl/vector/aux_/include_preprocessed.hpp>
#else
# include <boost/mpl/aux_/config/typeof.hpp>
# include <boost/mpl/aux_/config/ctps.hpp>
# include <boost/preprocessor/iterate.hpp>
namespace boost { namespace mpl {
# define BOOST_PP_ITERATION_PARAMS_1 \
(3,(51, 60, <boost/mpl/vector/aux_/numbered.hpp>))
# include BOOST_PP_ITERATE()
}}
#endif // BOOST_MPL_CFG_NO_PREPROCESSED_HEADERS
#endif // BOOST_MPL_VECTOR_VECTOR60_HPP_INCLUDED
编辑： 我正在尝试运行的最小示例
#define BOOST_MPL_CFG_NO_PREPROCESSED_HEADERS
#define BOOST_MPL_LIMIT_VECTOR_SIZE 60
#include <boost/mpl/vector.hpp>
int main() {
typedef boost::mpl::vector<
int,
int,
int,
int,
int,
int,
int,
int,
int,
int,
int,
int,
int,
int,
int,
int,
int,
int,
int,
int,
int,
int,
int,
int,
int,
int,
int,
int,
int,
int,
int,
int,
int,
int,
int,
int,
int,
int,
int,
int,
int,
int,
int,
int,
int,
int,
int,
int,
int,
int,
int
> vector_51;
return 0;
}
目前产生了错误
/usr/include/boost/mpl/vector.hpp:36:1: fatal error: boost/mpl/vector/vector60.hpp: No such file or directory
36 | # include BOOST_PP_STRINGIZE(boost/mpl/vector/AUX778076_VECTOR_HEADER)
我希望的解决方案是在包含文件之前添加一些代码，以便在编译时生成代码。但让我的示例能够与自己编写的文件一起工作将是一个好的第一步。