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add tristate_lexicographical_compare

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This commit is contained in:
bolero-MURAKAMI 2012-12-21 23:12:54 +09:00
parent 73cdad232b
commit ddac080ec0
7 changed files with 167 additions and 20 deletions
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47
sprout/string/char_traits.hpp
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@ -7,6 +7,7 @@
#include <sprout/config.hpp>
#include <sprout/functional/bind2nd.hpp>
#include <sprout/iterator/ptr_index_iterator.hpp>
#include <sprout/algorithm/tristate_lexicographical_compare.hpp>
#include HDR_ALGORITHM_SSCRISK_CEL_OR_SPROUT
#include HDR_ITERATOR_SSCRISK_CEL_OR_SPROUT
@ -31,6 +32,12 @@ namespace sprout {
return eq(c1, c2);
}
};
struct lt_ {
public:
SPROUT_CONSTEXPR bool operator()(char_type c1, char_type c2) const SPROUT_NOEXCEPT {
return lt(c1, c2);
}
};
private:
static SPROUT_CONSTEXPR char_type const* find_impl(char_type const* found, char_type const* last) {
return found == last ? nullptr
@ -48,11 +55,11 @@ namespace sprout {
return impl_type::lt(c1, c2);
}
static SPROUT_CONSTEXPR int compare(char_type const* s1, char_type const* s2, std::size_t n) {
return !n ? 0
: lt(*s1, *s2) ? -1
: lt(*s2, *s1) ? 1
: compare(s1 + 1, s2 + 1, n - 1)
;
return sprout::tristate_lexicographical_compare(
sprout::as_iterator(s1), sprout::as_iterator(s1, n),
sprout::as_iterator(s2), sprout::as_iterator(s2, n),
lt_()
);
}
static SPROUT_CONSTEXPR std::size_t length(char_type const* s) {
return !*s ? 0
@ -97,27 +104,27 @@ namespace sprout {
#if SPROUT_USE_INDEX_ITERATOR_IMPLEMENTATION
template<typename ConstIterator>
static SPROUT_CONSTEXPR int compare(char_type const* s1, ConstIterator s2, std::size_t n) {
return !n ? 0
: lt(*s1, *s2) ? -1
: lt(*s2, *s1) ? 1
: compare(s1 + 1, s2 + 1, n - 1)
;
return sprout::tristate_lexicographical_compare(
sprout::as_iterator(s1), sprout::as_iterator(s1, n),
s2, s2 + n,
lt_()
);
}
template<typename ConstIterator>
static SPROUT_CONSTEXPR int compare(ConstIterator s1, char_type const* s2, std::size_t n) {
return !n ? 0
: lt(*s1, *s2) ? -1
: lt(*s2, *s1) ? 1
: compare(s1 + 1, s2 + 1, n - 1)
;
return sprout::tristate_lexicographical_compare(
s1, s1 + n,
sprout::as_iterator(s2), sprout::as_iterator(s2, n),
lt_()
);
}
template<typename ConstIterator1, typename ConstIterator2>
static SPROUT_CONSTEXPR int compare(ConstIterator1 s1, ConstIterator2 s2, std::size_t n) {
return !n ? 0
: lt(*s1, *s2) ? -1
: lt(*s2, *s1) ? 1
: compare(s1 + 1, s2 + 1, n - 1)
;
return sprout::tristate_lexicographical_compare(
s1, s1 + n,
s2, s2 + n,
lt_()
);
}
template<typename ConstIterator>
static SPROUT_CONSTEXPR std::size_t length(ConstIterator s) {