MirrorHub/construct
0
0
Fork 0
mirror of https://github.com/matrix-construct/construct synced 2024-06-02 10:08:56 +02:00
Code Issues Releases Wiki Activity

ircd::fmt: Optimize static expression grammars.

Browse source
This commit is contained in:
Jason Volk 2022-06-11 14:14:50 -07:00
parent ba06a52368
commit 4d501569bc
1 changed files with 8 additions and 9 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

17
ircd/fmt.cc
View file

@ -15,7 +15,6 @@ __attribute__((visibility("internal")))
struct spec;
struct specifier;
struct parser extern const parser;
struct bool_specifier extern const bool_specifier;
struct char_specifier extern const char_specifier;
struct signed_specifier extern const signed_specifier;
@ -68,25 +67,26 @@ BOOST_FUSION_ADAPT_STRUCT
)
#pragma GCC visibility pop
#pragma GCC visibility push(internal)
/// The format string parser grammar.
struct ircd::fmt::parser
namespace ircd::fmt::parser
{
template<class R = unused_type>
using rule = qi::rule<const char *, R>;
const rule<> specsym
const expr specsym
{
lit(SPECIFIER)
,"format specifier"
};
const rule<> specterm
const expr specterm
{
lit(SPECIFIER_TERMINATOR)
,"specifier termination"
};
const rule<string_view> name
const expr name
{
raw[repeat(1,14)[char_("A-Za-z")]]
,"specifier name"
@ -104,7 +104,7 @@ struct ircd::fmt::parser
"specifier"
};
}
const ircd::fmt::parser;
#pragma GCC visibility pop
/// A format specifier handler module. This allows a new "%foo" to be defined
/// with custom handling by overriding. This abstraction is inserted into a
@ -393,9 +393,8 @@ ircd::fmt::snprintf::argument(const arg &val)
// waiting to be parsed now.
fmt::spec spec;
auto &start(begin(this->fmt));
const auto stop(end(this->fmt));
const auto &grammar(parser.spec);
if(ircd::parse<invalid_format>(start, stop, grammar.alias(), spec))
const auto &stop(end(this->fmt));
if(ircd::parse<invalid_format>(start, stop, parser::spec, spec))
handle_specifier(this->out, idx++, spec, val);
string_view fmt