如何在VS2017中的boost spirit x3中制作递归规则

Question

我在boost :: spirit :: x3中编写了以下递归规则,但它似乎只在g ++/clang中编译,而不是VS2017(15.5.3):

#include <iostream>
#include <boost/spirit/home/x3.hpp>

namespace lex3
{
    namespace x3 = boost::spirit::x3;

    x3::rule<struct foo_class> const foo = "foo";
    x3::rule<struct bar_class> const bar = "bar";

    auto bar_def = *((x3::char_ - "/*") - "*/") >> *(foo > *((x3::char_ - "/*") - "*/"));
    auto foo_def = "/*" > bar > "*/";

    BOOST_SPIRIT_DEFINE(foo)
    BOOST_SPIRIT_DEFINE(bar)
}

int main(int argc, char** argv)
{
    std::string input = "/* a /* nested */ comment */";
    auto f = input.begin();
    auto l = input.end();

    if (parse(f, l, lex3::foo) && (f == l))
        std::cout << "Parse success.\n";
    else
        std::cout << "Parse failure (remainder: " << std::string(f, l) << ").\n";

    return 0;
}

Coliru链接,g ++

Coliru link,clang ++

如何在VS2017中完成这项工作(如果可能)？

PS:Platform Toolset设置为v141,ISO标准设置为C++ 17,boost版本为1.66.0

PPS:编译错误如下

error C2039: 'insert': is not a member of 'boost::spirit::x3::unused_type'
note: see declaration of 'boost::spirit::x3::unused_type'
error C2039: 'end': is not a member of 'boost::spirit::x3::unused_type'
note: see declaration of 'boost::spirit::x3::unused_type'
error C2039: 'begin': is not a member of 'boost::spirit::x3::unused_type'
note: see declaration of 'boost::spirit::x3::unused_type'

Answer 1

我检查了GitHub上的Boost.Spirit存储库,因为我的本地版本太旧了,并注意到你的示例使用最新的develop分支编译好,但没有1.66.0版本(也在Clang和GCC上).将提交历史记录分开,发现此错误已修复

ee4943d5891bdae0706fb616b908e3bf528e0dfa

您可以将此提交中的修补程序应用于您的安装,也可以等待下一个版本.