amorfo77/json
1
0
Fork 0
mirror of https://github.com/nlohmann/json.git synced 2026-04-19 14:29:29 +00:00
Code Issues Packages Projects Releases Wiki Activity

🔨 cleanup + some noexcept

Browse Source
This commit is contained in:
Niels Lohmann
2018-01-16 20:41:04 +01:00
parent b182308eff
commit afe4571309
4 changed files with 28 additions and 35 deletions
Download Patch File Download Diff File Expand all files Collapse all files

38
develop/detail/iterators/primitive_iterator.hpp
View File

@@ -1,9 +1,7 @@
#pragma once
#include <ciso646> // not
#include <cstddef> // ptrdiff_t
#include <limits> // numeric_limits
#include <ostream> // ostream
namespace nlohmann
{
@@ -20,9 +18,15 @@ end_value (`1`) models past the end.
*/
class primitive_iterator_t
{
public:
private:
using difference_type = std::ptrdiff_t;
static constexpr difference_type begin_value = 0;
static constexpr difference_type end_value = begin_value + 1;
/// iterator as signed integer type
difference_type m_it = (std::numeric_limits<std::ptrdiff_t>::min)();
public:
constexpr difference_type get_value() const noexcept
{
return m_it;
@@ -62,10 +66,10 @@ class primitive_iterator_t
return lhs.m_it < rhs.m_it;
}
primitive_iterator_t operator+(difference_type i)
primitive_iterator_t operator+(difference_type n) noexcept
{
auto result = *this;
result += i;
result += n;
return result;
}
@@ -74,55 +78,43 @@ class primitive_iterator_t
return lhs.m_it - rhs.m_it;
}
friend std::ostream& operator<<(std::ostream& os, primitive_iterator_t it)
{
return os << it.m_it;
}
primitive_iterator_t& operator++()
primitive_iterator_t& operator++() noexcept
{
++m_it;
return *this;
}
primitive_iterator_t const operator++(int)
primitive_iterator_t const operator++(int) noexcept
{
auto result = *this;
m_it++;
return result;
}
primitive_iterator_t& operator--()
primitive_iterator_t& operator--() noexcept
{
--m_it;
return *this;
}
primitive_iterator_t const operator--(int)
primitive_iterator_t const operator--(int) noexcept
{
auto result = *this;
m_it--;
return result;
}
primitive_iterator_t& operator+=(difference_type n)
primitive_iterator_t& operator+=(difference_type n) noexcept
{
m_it += n;
return *this;
}
primitive_iterator_t& operator-=(difference_type n)
primitive_iterator_t& operator-=(difference_type n) noexcept
{
m_it -= n;
return *this;
}
private:
static constexpr difference_type begin_value = 0;
static constexpr difference_type end_value = begin_value + 1;
/// iterator as signed integer type
difference_type m_it = (std::numeric_limits<std::ptrdiff_t>::min)();
};
}
}