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ircd::spirit: Add convenience templates for semantic context access.

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This commit is contained in:
Jason Volk 2020-05-20 19:21:35 -07:00
parent 4d5c006003
commit a57469fbd6
1 changed files with 27 additions and 1 deletions
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28
include/ircd/spirit.h
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@ -125,7 +125,6 @@ __attribute__((visibility("hidden")))
using qi::bin_double;
using qi::big_bin_double;
using qi::little_bin_double;
using spirit::repository::qi::seek;
using karma::lit;
@ -138,10 +137,21 @@ __attribute__((visibility("hidden")))
using karma::maxwidth;
using karma::buffer;
using karma::skip;
template<size_t idx,
class semantic_context>
auto &
attr_at(semantic_context&&);
template<size_t idx,
class semantic_context>
auto &
local_at(semantic_context&&);
}}
namespace ircd::spirit::local
{
using qi::_0;
using qi::_1;
using qi::_2;
using qi::_3;
@ -226,4 +236,20 @@ catch(const spirit::qi::expectation_failure<it> &e)
throw spirit::expectation_failure<parent_error>(e);
}
template<size_t idx,
class semantic_context>
auto &
ircd::spirit::local_at(semantic_context&& c)
{
return boost::fusion::at_c<idx>(c.locals);
}
template<size_t idx,
class semantic_context>
auto &
ircd::spirit::attr_at(semantic_context&& c)
{
return boost::fusion::at_c<idx>(c.attributes);
}
#endif // HAVE_IRCD_SPIRIT_H