Struct Registry 

pub struct Registry { /* private fields */ }

Everything of the host program an interpreted program can reach.

Implementations

impl Registry

pub fn new() -> Self

An empty registry.

pub fn function( &mut self, ty: &str, name: &str, f: impl Fn(Vec<Value>) -> Result<Value, String> + 'static, )

Type::name(..), taking the arguments as they are.

pub fn method( &mut self, ty: &str, name: &str, f: impl Fn(Vec<Value>) -> Result<Value, String> + 'static, )

value.name(..) on a host value of ty; the receiver comes first.

pub fn method_for<T: 'static>( &mut self, ty: &str, name: &str, f: impl Fn(Vec<Value>) -> Result<Value, String> + 'static, )

value.name(..) on a host value holding a T, for types that share a name, such as the forms of a generic component.

pub fn constant( &mut self, ty: &str, name: &str, make: impl Fn() -> Value + 'static, )

Type::NAME, made each time it is read.

pub fn free_function( &mut self, name: &str, f: impl Fn(Vec<Value>) -> Result<Value, String> + 'static, )

A function called by its name alone, such as a helper the samples share.

pub fn field( &mut self, ty: &str, name: &str, get: impl Fn(&Value) -> Result<Value, String> + 'static, )

How value.name reads a field of a host struct of ty.

pub fn set_field( &mut self, ty: &str, name: &str, set: impl Fn(&Value, Value) -> Result<(), String> + 'static, )

How value.name = .. changes a field of a host struct of ty.

pub fn record( &mut self, ty: &str, build: impl Fn(Vec<(String, Value)>, Option<Value>) -> Result<Value, String> + 'static, )

How Ty { a: .., b: .., ..base } builds a host struct.

pub fn name_type<T: 'static>(&mut self, name: &'static str)

Remembers which name a Rust type goes by, for conversions.

pub fn conversion<From: 'static, To: 'static>( &mut self, name: &'static str, convert: fn(From) -> To, )

How a host value of type From becomes a To when a function asks for a To, as a Button becomes an AnyView.

pub fn alias(&mut self, alias: &str, ty: &str)

Lets alias name the type registered as ty, as a crate re-exports Stack as ChartStack.

Trait Implementations

impl Debug for Registry

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

Formats the value using the given formatter.

impl Default for Registry

fn default() -> Registry

Returns the “default value” for a type.