Struct Host 

pub struct Host { /* private fields */ }

An object of the host program: a component being built, a color, a binding. Builders take it by value, so using it moves it out, as in Rust; a second use is an error.

Implementations

impl Host

pub fn take_as<T: 'static>(&self) -> Result<T, String>

Takes the value out as a T: the same type, or one the registry converts to T.

impl Host

pub fn new<T: 'static>(type_name: &'static str, value: T) -> Self

Wraps a host value, known to the interpreter by type_name.

pub fn cloneable<T: Clone + 'static>(type_name: &'static str, value: T) -> Self

Wraps a value that .clone() and reading by reference copy instead of moving.

pub fn type_name(&self) -> &'static str

The name the interpreter knows its type by.

pub fn take<T: 'static>(&self) -> Result<T, String>

Takes the value out, or copies it when it can be copied.

Trait Implementations

impl Clone for Host

fn clone(&self) -> Host

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Host

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.