vbvx::HeaderView< H > Class Template Reference

A lightweight view over a header inside a packet buffer. More...

#include <header_view.hxx>

Public Member Functions
constexpr	HeaderView () noexcept=default
constexpr	HeaderView (const header_t *p) noexcept
constexpr	HeaderView (const uint8_t *p) noexcept
constexpr	operator bool () const noexcept
constexpr auto	get () const noexcept -> const header_t *
constexpr auto	operator-> () const noexcept -> const header_t *
constexpr auto	operator* () const noexcept -> const header_t &
constexpr auto	copy () const noexcept -> header_t

Detailed Description

template<WireHeader H>
class vbvx::HeaderView< H >

A lightweight view over a header inside a packet buffer.

• Zero-copy: wraps a pointer into the packet data.
• Bounds are checked by BufferView before construction.
• Convenient: acts like a pointer and can be copied out when needed.

Warning

The byte-pointer constructor creates a const H* over arbitrary packet bytes. This is a deliberate GCC/Clang-oriented zero-copy extension used with [[gnu::packed]] wire structs; it relies on those compilers' practical handling of packed object views over byte storage. It is not a fully portable ISO C++ object-lifetime/effective-type pattern. Use copy() when a portable local value is needed.

Constructor & Destructor Documentation

HeaderView() [1/3]

template<WireHeader H>

vbvx::HeaderView< H >::HeaderView ( )

constexprdefaultnoexcept

HeaderView() [2/3]

template<WireHeader H>

vbvx::HeaderView< H >::HeaderView ( const header_t * p )

inlineexplicitconstexprnoexcept

HeaderView() [3/3]

template<WireHeader H>

vbvx::HeaderView< H >::HeaderView ( const uint8_t * p )

inlineexplicitconstexprnoexcept

Member Function Documentation

copy()

template<WireHeader H>

auto vbvx::HeaderView< H >::copy ( ) const -> header_t

inlineconstexprnoexcept

get()

template<WireHeader H>

auto vbvx::HeaderView< H >::get ( ) const -> const header_t *

inlineconstexprnoexcept

operator bool()

template<WireHeader H>

vbvx::HeaderView< H >::operator bool ( ) const

inlineexplicitconstexprnoexcept

operator*()

template<WireHeader H>

auto vbvx::HeaderView< H >::operator* ( ) const -> const header_t &

inlineconstexprnoexcept

operator->()

template<WireHeader H>

auto vbvx::HeaderView< H >::operator-> ( ) const -> const header_t *

inlineconstexprnoexcept

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The documentation for this class was generated from the following file:

• vbvx/header_view.hxx