使用带有 boost::optional" 参数与 boost::spirit 绑定成员函数
Binding member functions with 'boost::optional' argument with boost::spirit
我有以下语法
template <typename Iterator>
struct Grammar : boost::spirit::qi::grammar<Iterator, void(), boost::spirit::ascii::space_type>
{
VariableMap variables;
bool ret;
Grammar(const VariableMap &variables) : Grammar::base_type(start), variables(variables), ret(true)
{
using boost::spirit::qi::lit;
using boost::spirit::qi::lexeme;
using boost::spirit::qi::char_;
using boost::spirit::ascii::alnum;
using boost::spirit::ascii::string;
using namespace boost::spirit::qi::labels;
using boost::spirit::qi::_1;
using boost::spirit::qi::_2;
using boost::phoenix::bind;
key %= char_("a-zA-Z_") >> *char_("a-zA-Z_0-9");
value %= +char_("a-zA-Z_0-9");
pair = (key >> -("=" >> value)) [ bind(&Grammar<Iterator>::check, this, _1, _2) ];
start = pair % ',';
}
void check(const std::string &key, const boost::optional<std::string> &value)
{
// ...
}
boost::spirit::qi::rule<Iterator, std::string(), boost::spirit::ascii::space_type> key, value;
boost::spirit::qi::rule<Iterator, void(), boost::spirit::ascii::space_type> pair;
boost::spirit::qi::rule<Iterator, void(), boost::spirit::ascii::space_type> start;
};
当'" =">>值'零件不是可选的时,'check'的签名只是'void(const std :: string&amp&amp; const std :: string&amp;)'它编译。但是,使该部分可选,并相应地调整签名,这些错误消息出现:
In instantiation of ‘py::com::personal::builder::Grammar<Iterator>::Grammar(const VariableMap&) [with Iterator = const char*; py::com::personal::builder::VariableMap = std::map<std::basic_string<char>, std::basic_string<char> >]’:
../../../../py.com.personal/builder/TaskLoader.cpp:537:47: required from here
../../../../py.com.personal/builder/TaskLoader.cpp:511:13: error: call of overloaded ‘bind(void (py::com::personal::builder::Grammar<const char*>::*)(const string&, const boost::optional<std::basic_string<char> >&), py::com::personal::builder::Grammar<const char*>* const, const _1_type&, const _2_type&)’ is ambiguous
../../../../py.com.personal/builder/TaskLoader.cpp:511:13: note: candidates are:
In file included from /home/gimenero/applib/boost/include/1.55/boost/preprocessor/iteration/detail/iter/forward1.hpp:57:0,
from /home/gimenero/applib/boost/include/1.55/boost/spirit/home/phoenix/bind/detail/bind_member_function.hpp:20,
from /home/gimenero/applib/boost/include/1.55/boost/spirit/home/phoenix/bind/bind_member_function.hpp:74,
from ../../../../py.com.personal/builder/TaskLoader.cpp:18:
/home/gimenero/applib/boost/include/1.55/boost/spirit/home/phoenix/bind/detail/bind_member_function.hpp:45:5: note: boost::phoenix::actor<typename boost::phoenix::as_composite<boost::phoenix::detail::function_eval<3>, boost::phoenix::detail::member_function_ptr<2, RT, RT (ClassT::*)(T0, T1)>, ClassA, A0, A1>::type> boost::phoenix::bind(RT (ClassT::*)(T0, T1), const ClassA&, const A0&, const A1&) [with RT = void; ClassT = py::com::personal::builder::Grammar<const char*>; T0 = const std::basic_string<char>&; T1 = const boost::optional<std::basic_string<char> >&; ClassA = py::com::personal::builder::Grammar<const char*>*; A0 = boost::phoenix::actor<boost::spirit::argument<0> >; A1 = boost::phoenix::actor<boost::spirit::argument<1> >; typename boost::phoenix::as_composite<boost::phoenix::detail::function_eval<3>, boost::phoenix::detail::member_function_ptr<2, RT, RT (ClassT::*)(T0, T1)>, ClassA, A0, A1>::type = boost::phoenix::composite<boost::phoenix::detail::function_eval<3>, boost::fusion::vector<boost::phoenix::value<boost::phoenix::detail::member_function_ptr<2, void, void (py::com::personal::builder::Grammar<const char*>::*)(const std::basic_string<char>&, const boost::optional<std::basic_string<char> >&)> >, boost::phoenix::value<py::com::personal::builder::Grammar<const char*>*>, boost::spirit::argument<0>, boost::spirit::argument<1>, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_> >]
In file included from /home/gimenero/applib/boost/include/1.55/boost/bind/bind.hpp:1595:0,
from /home/gimenero/applib/boost/include/1.55/boost/bind.hpp:22,
from ../../../../py.com.personal/builder/TaskLoader.cpp:24:
/home/gimenero/applib/boost/include/1.55/boost/bind/bind_mf_cc.hpp:67:5: note: boost::_bi::bind_t<R, boost::_mfi::mf2<R, T, B1, B2>, typename boost::_bi::list_av_3<A1, A2, A3>::type> boost::bind(R (T::*)(B1, B2), A1, A2, A3) [with R = void; T = py::com::personal::builder::Grammar<const char*>; B1 = const std::basic_string<char>&; B2 = const boost::optional<std::basic_string<char> >&; A1 = py::com::personal::builder::Grammar<const char*>*; A2 = boost::phoenix::actor<boost::spirit::argument<0> >; A3 = boost::phoenix::actor<boost::spirit::argument<1> >; typename boost::_bi::list_av_3<A1, A2, A3>::type = boost::_bi::list3<boost::_bi::value<py::com::personal::builder::Grammar<const char*>*>, boost::_bi::value<boost::phoenix::actor<boost::spirit::argument<0> > >, boost::_bi::value<boost::phoenix::actor<boost::spirit::argument<1> > > >]
In file included from /home/gimenero/applib/boost/include/1.55/boost/bind.hpp:22:0,
from ../../../../py.com.personal/builder/TaskLoader.cpp:24:
/home/gimenero/applib/boost/include/1.55/boost/bind/bind.hpp:1488:5: note: boost::_bi::bind_t<boost::_bi::unspecified, F, typename boost::_bi::list_av_3<A1, A2, A3>::type> boost::bind(F, A1, A2, A3) [with F = void (py::com::personal::builder::Grammar<const char*>::*)(const std::basic_string<char>&, const boost::optional<std::basic_string<char> >&); A1 = py::com::personal::builder::Grammar<const char*>*; A2 = boost::phoenix::actor<boost::spirit::argument<0> >; A3 = boost::phoenix::actor<boost::spirit::argument<1> >; typename boost::_bi::list_av_3<A1, A2, A3>::type = boost::_bi::list3<boost::_bi::value<py::com::personal::builder::Grammar<const char*>*>, boost::_bi::value<boost::phoenix::actor<boost::spirit::argument<0> > >, boost::_bi::value<boost::phoenix::actor<boost::spirit::argument<1> > > >]
gmake[2]: *** [build/Debug/GNU-Linux-x86/_ext/652184350/TaskLoader.o] Error 1
IM使用GCC 4.7.2。
这是一个依赖地址的lookup问题(boost :: phoenix :: bind vs boost :: bind),如'cv_and_he'指出(他不想让你让你做回答)。忽略了错误的速度。
相关文章:
- Boost Spirit,获取迭代器内部语义动作
- boost::spirit::karma 替代生成器,带有 boost::variant 由字符串和字符串别名组成
- boost::spirit::x3 中的通用解析器生成器
- Boost.Spirit将表达转换为AST
- 使用 Boost.Spirit 解析具有混合数据类型的 OBJ 文件?
- 如何处理Boost Spirit X3导致Visual Studio 2019 "static initialization order fiasco"?
- Boost Spirit X3:将(一些)空格解析为枚举
- Boost Spirit x3 条件(三元)运算符解析器
- 你如何从 Boost Spirit X3 词法解析器中获取字符串?
- 将 Boost.Spirit.X3 解析器拆分为多个 TU
- boost::spirit::x3 中的简单字符串解析器不起作用
- boost::spirit指针属性是用nullptr初始化的吗?
- Boost.Spirit Alternative Parser parallelization
- 如何在 boost::spirit::qi 中将某些语义操作排除在 AST 之外
- 自定义预期失败的完整错误消息(boost::spirit::x3)
- boost::spirit--试图编译大多数简单代码的编译器错误
- Boost.Spirit.Qi 语法,用于 Boost.Fusion 自适应结构中的默认值
- 使用 Boost.Spirit 解析嵌套列表
- (如何)我可以在不安装完整的提升库的情况下使用 boost::spirit X3 吗?
- n-ary布尔语法从中缀到前缀的Boost::Spirit转换?