mirror of
https://github.com/mutouyun/cpp-ipc.git
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93 lines
2.2 KiB
C++
93 lines
2.2 KiB
C++
#pragma once
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#include <cstddef>
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#include <tuple>
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#include <vector>
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#include <type_traits>
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#include "export.h"
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#include "def.h"
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namespace ipc {
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class IPC_EXPORT buffer {
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public:
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using destructor_t = void (*)(void*, std::size_t);
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buffer();
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buffer(void* p, std::size_t s, destructor_t d);
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buffer(void* p, std::size_t s);
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template <std::size_t N>
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explicit buffer(byte_t const (& data)[N])
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: buffer(data, sizeof(data)) {
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}
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explicit buffer(char const & c);
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buffer(buffer&& rhs);
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~buffer();
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void swap(buffer& rhs);
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buffer& operator=(buffer rhs);
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bool empty() const noexcept;
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void * data() noexcept;
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void const * data() const noexcept;
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# if __cplusplus >= 201703L
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template <typename T>
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auto data() noexcept -> std::enable_if_t<!std::is_const_v<T>, T*> {
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return static_cast<T*>(data());
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}
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template <typename T>
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auto data() const noexcept -> std::enable_if_t<std::is_const_v<T>, T*> {
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return static_cast<T*>(data());
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}
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# else /*__cplusplus < 201703L*/
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template <typename T>
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auto data() noexcept -> std::enable_if_t<!std::is_const<T>::value, T*> {
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return static_cast<T*>(data());
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}
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template <typename T>
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auto data() const noexcept -> std::enable_if_t<std::is_const<T>::value, T*> {
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return static_cast<T*>(data());
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}
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# endif/*__cplusplus < 201703L*/
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std::size_t size() const noexcept;
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std::tuple<void*, std::size_t> to_tuple() {
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return std::make_tuple(data(), size());
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}
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std::tuple<void const *, std::size_t> to_tuple() const {
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return std::make_tuple(data(), size());
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}
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std::vector<byte_t> to_vector() const {
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# if __cplusplus >= 201703L
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auto [d, s] = to_tuple();
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# else /*__cplusplus < 201703L*/
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auto tp = to_tuple();
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auto d = std::get<0>(tp);
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auto s = std::get<1>(tp);
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# endif/*__cplusplus < 201703L*/
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return {
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static_cast<byte_t const *>(d),
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static_cast<byte_t const *>(d) + s
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};
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}
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friend IPC_EXPORT bool operator==(buffer const & b1, buffer const & b2);
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private:
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class buffer_;
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buffer_* p_;
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};
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} // namespace ipc
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