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// Copyright 2018 Daniel Parker
// Distributed under the Boost license, Version 1.0.
// (See accompanying file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
// See https://github.com/danielaparker/jsoncons for latest version
#ifndef JSONCONS_TYPED_ARRAY_VIEW_HPP
#define JSONCONS_TYPED_ARRAY_VIEW_HPP
#include <memory> // std::allocator
#include <string>
#include <stdexcept>
#include <system_error>
#include <ios>
#include <type_traits> // std::enable_if
#include <array> // std::array
#include <functional> // std::function
#include <jsoncons/json_exception.hpp>
#include <jsoncons/json_visitor.hpp>
#include <jsoncons/bigint.hpp>
#include <jsoncons/json_parser.hpp>
#include <jsoncons/ser_context.hpp>
#include <jsoncons/sink.hpp>
#include <jsoncons/detail/write_number.hpp>
#include <jsoncons/json_type_traits.hpp>
#include <jsoncons/converter.hpp>
namespace jsoncons {
struct uint8_array_arg_t {explicit uint8_array_arg_t() = default; };
constexpr uint8_array_arg_t uint8_array_arg = uint8_array_arg_t();
struct uint16_array_arg_t {explicit uint16_array_arg_t() = default; };
struct uint32_array_arg_t {explicit uint32_array_arg_t() = default; };
constexpr uint32_array_arg_t uint32_array_arg = uint32_array_arg_t();
struct uint64_array_arg_t {explicit uint64_array_arg_t() = default; };
constexpr uint64_array_arg_t uint64_array_arg = uint64_array_arg_t();
struct int8_array_arg_t {explicit int8_array_arg_t() = default; };
constexpr int8_array_arg_t int8_array_arg = int8_array_arg_t();
struct int16_array_arg_t {explicit int16_array_arg_t() = default; };
constexpr int16_array_arg_t int16_array_arg = int16_array_arg_t();
struct int32_array_arg_t {explicit int32_array_arg_t() = default; };
constexpr int32_array_arg_t int32_array_arg = int32_array_arg_t();
struct int64_array_arg_t {explicit int64_array_arg_t() = default; };
constexpr int64_array_arg_t int64_array_arg = int64_array_arg_t();
constexpr uint16_array_arg_t uint16_array_arg = uint16_array_arg_t();
struct half_array_arg_t {explicit half_array_arg_t() = default; };
constexpr half_array_arg_t half_array_arg = half_array_arg_t();
struct float_array_arg_t {explicit float_array_arg_t() = default; };
constexpr float_array_arg_t float_array_arg = float_array_arg_t();
struct double_array_arg_t {explicit double_array_arg_t() = default; };
constexpr double_array_arg_t double_array_arg = double_array_arg_t();
struct float128_array_arg_t {explicit float128_array_arg_t() = default; };
constexpr float128_array_arg_t float128_array_arg = float128_array_arg_t();
enum class typed_array_type{uint8_value=1,uint16_value,uint32_value,uint64_value,
int8_value,int16_value,int32_value,int64_value,
half_value, float_value,double_value};
class typed_array_view
{
typed_array_type type_;
union
{
const uint8_t* uint8_data_;
const uint16_t* uint16_data_;
const uint32_t* uint32_data_;
const uint64_t* uint64_data_;
const int8_t* int8_data_;
const int16_t* int16_data_;
const int32_t* int32_data_;
const int64_t* int64_data_;
const float* float_data_;
const double* double_data_;
} data_;
std::size_t size_;
public:
typed_array_view()
: type_(), data_(), size_(0)
{
}
typed_array_view(const typed_array_view& other)
: type_(other.type_), data_(other.data_), size_(other.size())
{
}
typed_array_view(typed_array_view&& other) noexcept
{
swap(*this,other);
}
typed_array_view(const uint8_t* data, std::size_t size)
: type_(typed_array_type::uint8_value), size_(size)
{
data_.uint8_data_ = data;
}
typed_array_view(const uint16_t* data, std::size_t size)
: type_(typed_array_type::uint16_value), size_(size)
{
data_.uint16_data_ = data;
}
typed_array_view(const uint32_t* data, std::size_t size)
: type_(typed_array_type::uint32_value), size_(size)
{
data_.uint32_data_ = data;
}
typed_array_view(const uint64_t* data, std::size_t size)
: type_(typed_array_type::uint64_value), size_(size)
{
data_.uint64_data_ = data;
}
typed_array_view(const int8_t* data, std::size_t size)
: type_(typed_array_type::int8_value), size_(size)
{
data_.int8_data_ = data;
}
typed_array_view(const int16_t* data, std::size_t size)
: type_(typed_array_type::int16_value), size_(size)
{
data_.int16_data_ = data;
}
typed_array_view(const int32_t* data, std::size_t size)
: type_(typed_array_type::int32_value), size_(size)
{
data_.int32_data_ = data;
}
typed_array_view(const int64_t* data, std::size_t size)
: type_(typed_array_type::int64_value), size_(size)
{
data_.int64_data_ = data;
}
typed_array_view(half_array_arg_t, const uint16_t* data, std::size_t size)
: type_(typed_array_type::half_value), size_(size)
{
data_.uint16_data_ = data;
}
typed_array_view(const float* data, std::size_t size)
: type_(typed_array_type::float_value), size_(size)
{
data_.float_data_ = data;
}
typed_array_view(const double* data, std::size_t size)
: type_(typed_array_type::double_value), size_(size)
{
data_.double_data_ = data;
}
typed_array_view& operator=(const typed_array_view& other)
{
typed_array_view temp(other);
swap(*this,temp);
return *this;
}
typed_array_type type() const {return type_;}
std::size_t size() const
{
return size_;
}
jsoncons::span<const uint8_t> data(uint8_array_arg_t) const
{
JSONCONS_ASSERT(type_ == typed_array_type::uint8_value);
return jsoncons::span<const uint8_t>(data_.uint8_data_, size_);
}
jsoncons::span<const uint16_t> data(uint16_array_arg_t) const
{
JSONCONS_ASSERT(type_ == typed_array_type::uint16_value);
return jsoncons::span<const uint16_t>(data_.uint16_data_, size_);
}
jsoncons::span<const uint32_t> data(uint32_array_arg_t) const
{
JSONCONS_ASSERT(type_ == typed_array_type::uint32_value);
return jsoncons::span<const uint32_t>(data_.uint32_data_, size_);
}
jsoncons::span<const uint64_t> data(uint64_array_arg_t) const
{
JSONCONS_ASSERT(type_ == typed_array_type::uint64_value);
return jsoncons::span<const uint64_t>(data_.uint64_data_, size_);
}
jsoncons::span<const int8_t> data(int8_array_arg_t) const
{
JSONCONS_ASSERT(type_ == typed_array_type::int8_value);
return jsoncons::span<const int8_t>(data_.int8_data_, size_);
}
jsoncons::span<const int16_t> data(int16_array_arg_t) const
{
JSONCONS_ASSERT(type_ == typed_array_type::int16_value);
return jsoncons::span<const int16_t>(data_.int16_data_, size_);
}
jsoncons::span<const int32_t> data(int32_array_arg_t) const
{
JSONCONS_ASSERT(type_ == typed_array_type::int32_value);
return jsoncons::span<const int32_t>(data_.int32_data_, size_);
}
jsoncons::span<const int64_t> data(int64_array_arg_t) const
{
JSONCONS_ASSERT(type_ == typed_array_type::int64_value);
return jsoncons::span<const int64_t>(data_.int64_data_, size_);
}
jsoncons::span<const uint16_t> data(half_array_arg_t) const
{
JSONCONS_ASSERT(type_ == typed_array_type::half_value);
return jsoncons::span<const uint16_t>(data_.uint16_data_, size_);
}
jsoncons::span<const float> data(float_array_arg_t) const
{
JSONCONS_ASSERT(type_ == typed_array_type::float_value);
return jsoncons::span<const float>(data_.float_data_, size_);
}
jsoncons::span<const double> data(double_array_arg_t) const
{
JSONCONS_ASSERT(type_ == typed_array_type::double_value);
return jsoncons::span<const double>(data_.double_data_, size_);
}
friend void swap(typed_array_view& a, typed_array_view& b) noexcept
{
std::swap(a.data_,b.data_);
std::swap(a.type_,b.type_);
std::swap(a.size_,b.size_);
}
};
} // namespace jsoncons
#endif
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