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construct/include/ircd/json/array_iterator.h

108 lines
2.8 KiB
C++

// The Construct
//
// Copyright (C) The Construct Developers, Authors & Contributors
// Copyright (C) 2016-2018 Jason Volk <jason@zemos.net>
//
// Permission to use, copy, modify, and/or distribute this software for any
// purpose with or without fee is hereby granted, provided that the above
// copyright notice and this permission notice is present in all copies. The
// full license for this software is available in the LICENSE file.
#pragma once
#define HAVE_IRCD_JSON_ARRAY_ITERATOR_H
namespace ircd::json
{
bool operator==(const array::const_iterator &, const array::const_iterator &);
bool operator!=(const array::const_iterator &, const array::const_iterator &);
bool operator<=(const array::const_iterator &, const array::const_iterator &);
bool operator>=(const array::const_iterator &, const array::const_iterator &);
bool operator<(const array::const_iterator &, const array::const_iterator &);
bool operator>(const array::const_iterator &, const array::const_iterator &);
}
struct ircd::json::array::const_iterator
{
friend class array;
using value_type = const string_view;
using pointer = value_type *;
using reference = value_type &;
using iterator = const_iterator;
using size_type = size_t;
using difference_type = ptrdiff_t;
using iterator_category = std::forward_iterator_tag;
const char *start {nullptr};
const char *stop {nullptr};
string_view state;
const_iterator(const char *const &start, const char *const &stop)
:start{start}
,stop{stop}
{}
public:
value_type *operator->() const;
value_type &operator*() const;
const_iterator &operator++();
const_iterator() = default;
};
inline ircd::json::array::const_iterator::value_type &
ircd::json::array::const_iterator::operator*()
const
{
return *operator->();
}
inline ircd::json::array::const_iterator::value_type *
ircd::json::array::const_iterator::operator->()
const
{
return &state;
}
inline bool
ircd::json::operator==(const array::const_iterator &a,
const array::const_iterator &b)
{
return a.start == b.start;
}
inline bool
ircd::json::operator!=(const array::const_iterator &a,
const array::const_iterator &b)
{
return a.start != b.start;
}
inline bool
ircd::json::operator<=(const array::const_iterator &a,
const array::const_iterator &b)
{
return a.start <= b.start;
}
inline bool
ircd::json::operator>=(const array::const_iterator &a,
const array::const_iterator &b)
{
return a.start >= b.start;
}
inline bool
ircd::json::operator<(const array::const_iterator &a,
const array::const_iterator &b)
{
return a.start < b.start;
}
inline bool
ircd::json::operator>(const array::const_iterator &a,
const array::const_iterator &b)
{
return a.start > b.start;
}