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Commit d1626e96 authored by Victor Zverovich's avatar Victor Zverovich
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Remove unused overloads

parent 160bcb72
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src/text/boost/text/grapheme_break.hpp
View file @ d1626e96
......@@ -4,8 +4,6 @@
#include <boost/text/algorithm.hpp>
#include <boost/text/utility.hpp>
#include <boost/assert.hpp>
#include <array>
#include <unordered_map>
......@@ -158,123 +156,6 @@ constexpr std::array<std::array<bool, 15>, 15> grapheme_breaks = {{
}
}
#ifdef BOOST_TEXT_DOXYGEN
/** Finds the nearest grapheme break at or before before `it`. If `it ==
first`, that is returned. Otherwise, the first code point of the
grapheme that `it` is within is returned (even if `it` is already at
the first code point of a grapheme).
This function only participates in overload resolution if `CPIter`
models the CPIter concept. */
template<typename CPIter, typename Sentinel>
CPIter prev_grapheme_break(CPIter first, CPIter it, Sentinel last) noexcept;
/** Finds the next word break after `first`. This will be the first code
point after the current word, or `last` if no next word exists.
This function only participates in overload resolution if `CPIter`
models the CPIter concept.
\pre `first` is at the beginning of a word. */
template<typename CPIter, typename Sentinel>
CPIter next_grapheme_break(CPIter first, Sentinel last) noexcept;
/** Finds the nearest grapheme break at or before before `it`. If `it ==
range.begin()`, that is returned. Otherwise, the first code point of
the grapheme that `it` is within is returned (even if `it` is already
at the first code point of a grapheme).
This function only participates in overload resolution if `CPRange`
models the CPRange concept. */
template<typename CPRange, typename CPIter>
detail::undefined prev_grapheme_break(CPRange & range, CPIter it) noexcept;
/** Finds the next grapheme break after `it`. This will be the first code
point after the current grapheme, or `range.end()` if no next grapheme
exists.
This function only participates in overload resolution if `CPRange`
models the CPRange concept.
\pre `it` is at the beginning of a grapheme. */
template<typename CPRange, typename CPIter>
detail::undefined next_grapheme_break(CPRange & range, CPIter it) noexcept;
#else
template<typename CPIter, typename Sentinel>
auto prev_grapheme_break(CPIter first, CPIter it, Sentinel last) noexcept
-> detail::cp_iter_ret_t<CPIter, CPIter>
{
if (it == first)
return it;
if (it == last && --it == first)
return it;
detail::grapheme_break_state<CPIter> state;
state.it = it;
state.prop = grapheme_prop(*state.it);
state.prev_prop = grapheme_prop(*std::prev(state.it));
state.emoji_state = detail::grapheme_break_emoji_state_t::none;
for (; state.it != first; state = prev(state)) {
state.prev_prop = grapheme_prop(*std::prev(state.it));
// When we see an RI, back up to the first RI so we can see what
// emoji state we're supposed to be in here.
if (state.emoji_state ==
detail::grapheme_break_emoji_state_t::none &&
state.prop == grapheme_property::Regional_Indicator) {
int ris_before = 0;
find_if_not_backward(
first, state.it, [&ris_before](uint32_t cp) {
bool const ri = grapheme_prop(cp) ==
grapheme_property::Regional_Indicator;
if (ri)
++ris_before;
return ri;
});
state.emoji_state =
(ris_before % 2 == 0)
? detail::grapheme_break_emoji_state_t::first_emoji
: detail::grapheme_break_emoji_state_t::second_emoji;
}
// GB11
if (state.prev_prop == grapheme_property::ZWJ &&
state.prop == grapheme_property::ExtPict &&
detail::gb11_prefix(first, std::prev(state.it))) {
continue;
}
if (state.emoji_state ==
detail::grapheme_break_emoji_state_t::first_emoji) {
if (state.prev_prop == grapheme_property::Regional_Indicator) {
state.emoji_state =
detail::grapheme_break_emoji_state_t::second_emoji;
return state.it;
} else {
state.emoji_state =
detail::grapheme_break_emoji_state_t::none;
}
} else if (
state.emoji_state ==
detail::grapheme_break_emoji_state_t::second_emoji &&
state.prev_prop == grapheme_property::Regional_Indicator) {
state.emoji_state =
detail::grapheme_break_emoji_state_t::first_emoji;
continue;
}
if (detail::table_grapheme_break(state.prev_prop, state.prop))
return state.it;
}
return first;
}
template<typename CPIter, typename Sentinel>
auto next_grapheme_break(CPIter first, Sentinel last) noexcept
-> detail::cp_iter_ret_t<CPIter, CPIter>
......@@ -328,43 +209,6 @@ constexpr std::array<std::array<bool, 15>, 15> grapheme_breaks = {{
return state.it;
}
template<typename CPRange, typename CPIter>
auto prev_grapheme_break(CPRange & range, CPIter it) noexcept
-> detail::cp_rng_alg_ret_t<detail::iterator_t<CPRange>, CPRange>
{
return prev_grapheme_break(std::begin(range), it, std::end(range));
}
template<typename CPRange, typename CPIter>
auto next_grapheme_break(CPRange & range, CPIter it) noexcept
-> detail::cp_rng_alg_ret_t<detail::iterator_t<CPRange>, CPRange>
{
return next_grapheme_break(it, std::end(range));
}
#endif
namespace detail {
template<typename CPIter, typename Sentinel>
struct next_grapheme_callable
{
CPIter operator()(CPIter it, Sentinel last) const noexcept
{
return next_grapheme_break(it, last);
}
};
template<typename CPIter>
struct prev_grapheme_callable
{
CPIter operator()(CPIter first, CPIter it, CPIter last) const
noexcept
{
return prev_grapheme_break(first, it, last);
}
};
}
}}
#endif
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