Struct Registrar 

pub struct Registrar { /* private fields */ }

What a plugin registers into, handed to RuntimePlugin::register.

Implementations

impl Registrar

pub fn host(&self) -> Host

The host, for a plugin that starts a thread while it registers.

A plugin that watches a file, polls a device, or waits on a socket starts doing so here, and the handle it needs to deliver what it finds is this one. It stays valid for the process.

pub fn script_fn(&mut self, f: PluginFn) -> &mut Self

Offer a function. Registration order is the order the app’s script hosts bind it in, and a later function of the same namespace and name shadows an earlier one.

pub fn prelude(&mut self, lang: &str, ns: &str, source: &str) -> &mut Self

Ship source in lang that the host of that language compiles ahead of the app’s own program, wrapping the functions registered under ns.

This is how a plugin offers sugar over what it registered: a struct and an impl block in that language, so a script calls Gpio::read(pin) rather than the free function.

Trait Implementations

impl Default for Registrar

fn default() -> Self

Returns the “default value” for a type.