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ircd::spirit: Add template id to custom_parser; add three specializations per unit for now.

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This commit is contained in:
Jason Volk 2020-09-26 20:02:14 -07:00
parent a73b538349
commit 30e5a0110c
2 changed files with 58 additions and 13 deletions
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58
include/ircd/spirit/parse.h
View file

@ -16,8 +16,11 @@ namespace spirit
__attribute__((visibility("internal")))
{
struct substring_view;
struct custom_parser;
BOOST_SPIRIT_TERMINAL(custom);
template<size_t id> struct custom_parser;
BOOST_SPIRIT_TERMINAL(custom0);
BOOST_SPIRIT_TERMINAL(custom1);
BOOST_SPIRIT_TERMINAL(custom2);
template<class gen,
class... attr>
@ -37,18 +40,35 @@ __attribute__((visibility("internal")))
namespace qi
{
template<class modifiers>
struct make_primitive<ircd::spirit::tag::custom, modifiers>;
struct make_primitive<ircd::spirit::tag::custom0, modifiers>;
template<class modifiers>
struct make_primitive<ircd::spirit::tag::custom1, modifiers>;
template<class modifiers>
struct make_primitive<ircd::spirit::tag::custom2, modifiers>;
}
template<>
struct use_terminal<qi::domain, ircd::spirit::tag::custom>
struct use_terminal<qi::domain, ircd::spirit::tag::custom0>
:mpl::true_
{};
template<>
struct use_terminal<qi::domain, ircd::spirit::tag::custom1>
:mpl::true_
{};
template<>
struct use_terminal<qi::domain, ircd::spirit::tag::custom2>
:mpl::true_
{};
}}
template<size_t id>
struct [[gnu::visibility("internal")]]
ircd::spirit::custom_parser
:qi::primitive_parser<custom_parser>
:qi::primitive_parser<custom_parser<id>>
{
template<class context,
class iterator>
@ -72,9 +92,33 @@ ircd::spirit::custom_parser
template<class modifiers>
struct [[gnu::visibility("internal")]]
boost::spirit::qi::make_primitive<ircd::spirit::tag::custom, modifiers>
boost::spirit::qi::make_primitive<ircd::spirit::tag::custom0, modifiers>
{
using result_type = ircd::spirit::custom_parser;
using result_type = ircd::spirit::custom_parser<0>;
result_type operator()(unused_type, unused_type) const
{
return result_type{};
}
};
template<class modifiers>
struct [[gnu::visibility("internal")]]
boost::spirit::qi::make_primitive<ircd::spirit::tag::custom1, modifiers>
{
using result_type = ircd::spirit::custom_parser<1>;
result_type operator()(unused_type, unused_type) const
{
return result_type{};
}
};
template<class modifiers>
struct [[gnu::visibility("internal")]]
boost::spirit::qi::make_primitive<ircd::spirit::tag::custom2, modifiers>
{
using result_type = ircd::spirit::custom_parser<2>;
result_type operator()(unused_type, unused_type) const
{

13
ircd/json.cc
View file

@ -164,7 +164,7 @@ ircd::json::parser
};
template<class block_t> static u64x2 string_content_block(const block_t, const block_t) noexcept;
const custom_parser string_content{};
const custom_parser<0> string_content{};
const rule<string_view> string
{
//quote >> chars >> (!escape >> quote)
@ -474,16 +474,17 @@ const
/// to the end of whatever the user provided. Returns true if successful and
/// the result string_view is set in the context attribute; the iterator is
/// advanced.
template<>
template<class iterator,
class context,
class skipper,
class attr>
inline bool
ircd::json::custom_parser::parse(iterator &__restrict__ start,
const iterator &__restrict__ stop,
context &g,
const skipper &,
attr &)
ircd::json::custom_parser<0>::parse(iterator &__restrict__ start,
const iterator &__restrict__ stop,
context &g,
const skipper &,
attr &)
const
{
// Clang scales between 128bit and 256bit systems when we use the 256 bit