fhicl::hex_parser Struct Reference

#include "tokens.h"

Inheritance diagram for fhicl::hex_parser:

Classes
struct	attribute

Public Member Functions
template<typename Iterator , typename Context , typename Skipper , typename Attribute >
bool	parse (Iterator &first, Iterator const &last, Context &, Skipper const &skipper, Attribute &attr) const
template<typename Context >
boost::spirit::info	what (Context &) const

Detailed Description

Definition at line 208 of file tokens.h.

Member Function Documentation

template<typename Iterator , typename Context , typename Skipper , typename Attribute >

bool fhicl::hex_parser::parse ( Iterator &  first, Iterator const &  last, Context &  , Skipper const &  skipper, Attribute &  attr  ) const

inline

Definition at line 221 of file tokens.h.

References fhicl::maximally_munched_number().

    {
      boost::spirit::qi::skip_over(first, last, skipper);

      static std::string const allowed{"0123456789abcdefABCDEF"};
      Iterator it = first;

      if (it == last || *it != '0')
        return false;

      ++it;

      if (it == last || toupper(*it) != 'X')
        return false;

      ++it;

      while (it != last && allowed.find(*it) != std::string::npos)
        ++it;

      if (it != last && !maximally_munched_number(*it))
        return false;

      Attribute raw(first, it);
      if (raw.empty() || raw.size() == 2)
        return false;

      Attribute result;
      if (!cet::canonical_number(raw, result))
        return false;

      first = it;
      boost::spirit::traits::assign_to(result, attr);
      return true;
    }

template<typename Context >

boost::spirit::info fhicl::hex_parser::what ( Context &  ) const

inline

Definition at line 264 of file tokens.h.

    {
      return boost::spirit::info{"fhicl::hex"};
    }

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The documentation for this struct was generated from the following file:

• fhiclcpp/tokens.h