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skips

v1
Brett 2024-09-29 23:04:36 -04:00
parent 5f61e2be4c
commit 2b375fc8f3
2 changed files with 48 additions and 4 deletions
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2
CMakeLists.txt
View File

@ -1,6 +1,6 @@
cmake_minimum_required(VERSION 3.20)
include(cmake/color.cmake)
set(BLT_VERSION 1.0.4)
set(BLT_VERSION 1.0.5)
set(BLT_TARGET BLT)

50
include/blt/iterator/zip.h
View File

@ -72,7 +72,7 @@ namespace blt
return tmp;
}
auto base()
auto raw_tuple()
{
return iter;
}
@ -205,10 +205,12 @@ namespace blt
}
};
BLT_META_MAKE_FUNCTION_CHECK(base);
template<typename Iter>
auto get_base(Iter iter)
{
if constexpr (meta::is_reverse_iterator_v<Iter>)
if constexpr (has_func_base_v<Iter>)
{
return std::move(iter).base();
} else
@ -252,7 +254,7 @@ namespace blt
if constexpr (check)
{
return Derived{get_base(begin),
get_base(begin + std::min(n, static_cast<blt::size_t>(std::distance(begin, end))))};
get_base(begin + std::min(static_cast<blt::size_t>(n), std::distance(begin, end)))};
} else
{
return Derived{get_base(begin), get_base(begin + n)};
@ -267,6 +269,48 @@ namespace blt
auto take_or(blt::size_t n)
{ return take_base<true>(n); }
};
template<typename Derived>
class skip_impl
{
private:
template<bool check>
auto skip_base(blt::size_t n)
{
auto* d = static_cast<Derived*>(this);
auto begin = d->begin();
auto end = d->end();
if constexpr (std::is_same_v<typename Derived::iterator_category, std::random_access_iterator_tag>)
{
if constexpr (check)
{
return Derived{begin + std::min(static_cast<blt::size_t>(n), std::distance(begin, end))};
} else
{
return Derived{begin + n, end};
}
} else
{
for (blt::size_t i = 0; i < n; i++)
{
if constexpr (check){
if (begin == end)
break;
}
++begin;
}
return Derived{begin, end};
}
}
public:
void skip(blt::size_t n)
{ return skip_base<false>(n); }
void skip_or(blt::size_t n)
{ return skip_base<true>(n); }
};
}
template<typename Iter>