microfmt::register_selected_field< State, Value, Selector, Registers > Struct Template Reference

Compile-time field trait with state-dependent member selection. More...

#include <register_context.hpp>

Public Types
using	state_type = State
using	value_type = Value

Static Public Member Functions
static constexpr bool	matches (uint32_t index) noexcept
static constexpr const value_type *	get (const state_type &state, uint32_t index) noexcept
static constexpr auto	get (state_type &state, uint32_t index) noexcept -> decltype(Selector{}(state, index))

Detailed Description

template<typename State, typename Value, typename Selector, uint32_t... Registers>
struct microfmt::register_selected_field< State, Value, Selector, Registers >

Compile-time field trait with state-dependent member selection.

The selectors can inspect the complete source register set before returning the member that represents the requested register. This supports banked registers and ABI choices such as ARM frame pointer selection from CPSR.T.

Template Parameters

State	Bound register structure.
Value	Selected register value type.
Selector	Stateless function object returning a pointer into the state. A templated call operator can preserve the state's constness without separate const and mutable selector overloads. Returning only const value_type * makes the field read-only.
Registers	Register indexes handled by the selectors.

Member Typedef Documentation

state_type

template<typename State , typename Value , typename Selector , uint32_t... Registers>

using microfmt::register_selected_field< State, Value, Selector, Registers >::state_type = State

value_type

template<typename State , typename Value , typename Selector , uint32_t... Registers>

using microfmt::register_selected_field< State, Value, Selector, Registers >::value_type = Value

Member Function Documentation

get() [1/2]

template<typename State , typename Value , typename Selector , uint32_t... Registers>

static constexpr const value_type * microfmt::register_selected_field< State, Value, Selector, Registers >::get ( const state_type &  state, uint32_t  index  )

inlinestaticconstexprnoexcept

get() [2/2]

template<typename State , typename Value , typename Selector , uint32_t... Registers>

static constexpr auto microfmt::register_selected_field< State, Value, Selector, Registers >::get ( state_type &  state, uint32_t  index  ) -> decltype(Selector{}(state, index))

inlinestaticconstexprnoexcept

matches()

template<typename State , typename Value , typename Selector , uint32_t... Registers>

static constexpr bool microfmt::register_selected_field< State, Value, Selector, Registers >::matches ( uint32_t  index )

inlinestaticconstexprnoexcept

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

• include/microfmt/inspector/register_context.hpp