herald Namespace Reference

Acts as a non-global memory arena for arbitrary classes. More...

Namespaces
	datatype
	Contains all low-level Herald datatype implementations.
	engine
	Engine classes provide for task scheduling, including complex inter-dependent tasks.
	zephyrinternal
	Internal zephyr namespace DO NOT USE - API MAY CHANGE WITHOUT WARNING.

Classes
struct	Context
	Compile-time Context class, customisable via template traits. Provides generic access to OS system features. More...
struct	DefaultPlatformType
class	DefaultSensorDelegate
	Default implementation that provides implementations for each delegate callback. More...
class	Device
	Generic abstraction of a particular local proximate device type. More...
class	SensorArray
	Manages all Sensors and sensor delegates for Herald. More...
struct	TypeT
class	SensorDelegateSet
	A set of variant typed Sensor Delegate instances. Delegate callbacks can be invoked on the whole set, if supported by each. More...
class	ZephyrContextProvider
	Holds generic state across our application for any Zephyr RTOS device. More...

Typedefs
template<typename T , typename... Args>
using	HasSensorFunctionT = decltype(hasSensorFunction(std::declval< T >(), std::declval< Args >()...))

Functions
template<typename F , typename... Args, typename = decltype(std::declval<F>()(std::declval<Args&&>()...))>
std::true_type	isValidImpl (void *)
template<typename F , typename... Args>
std::false_type	isValidImpl (...)
template<typename T >
T	valueT (TypeT< T >)

Variables
constexpr auto	isValid
template<typename T >
constexpr auto	type = TypeT<T>{}
constexpr auto	hasSensorFunction
template<typename T , typename... Args>
constexpr auto	HasSensorFunctionV = HasSensorFunctionT<T,Args...>::value

Detailed Description

Acts as a non-global memory arena for arbitrary classes.

Main Herald library include for C++ Native platforms.

We may not use C++20 or similar ranges - we need to be super memory efficient in our implementation for embedded devices, and we cannot use compiler features not yet present in gcc-arm.

The main Herald Proximity namespace in C++

Variable Documentation

hasSensorFunction

constexpr auto herald::hasSensorFunction

constexpr

Initial value:

= isValid(
  [](auto&& s,auto&& sensor,auto&& didRead,auto&& fromTarget) ->
    decltype(((decltype(s))s).get().sensor(sensor,didRead,fromTarget)) {}
)

isValid

constexpr auto herald::isValid

inlineconstexpr

Initial value:

= [] (auto f) {
  return [](auto&&... args) {
    return decltype(isValidImpl<decltype(f),decltype(args)&&...>(nullptr)){};
  };
}