Struct boa::object::FunctionBuilder

pub struct FunctionBuilder<'context> { /* fields omitted */ }

Builder for creating native function objects

Implementations

impl<'context> FunctionBuilder<'context>

pub fn native(context: &'context mut Context, function: NativeFunction) -> Self

Create a new FunctionBuilder for creating a native function.

pub fn closure<F>(context: &'context mut Context, function: F) -> Self where
    F: Fn(&JsValue, &[JsValue], &mut Context) -> JsResult<JsValue> + Copy + 'static, 

Create a new FunctionBuilder for creating a closure function.

pub fn closure_with_captures<F, C>(
    context: &'context mut Context,
    function: F,
    captures: C
) -> Self where
    F: Fn(&JsValue, &[JsValue], &mut Context, &mut C) -> JsResult<JsValue> + Copy + 'static,
    C: NativeObject + Clone, 

Create a new closure function with additional captures.

Note

You can only move variables that implement Debug + Any + Trace + Clone. In other words, only NativeObject + Clone objects are movable.

pub fn name<N>(&mut self, name: N) -> &mut Self where
    N: AsRef<str>, 

Specify the name property of object function object.

The default is "" (empty string).

pub fn length(&mut self, length: usize) -> &mut Self

Specify the length property of object function object.

How many arguments this function takes.

The default is 0.

pub fn constructable(&mut self, yes: bool) -> &mut Self

Specify the whether the object function object can be called with new keyword.

The default is false.

pub fn build(&mut self) -> JsObject

Build the function object.

Trait Implementations

impl<'context> Debug for FunctionBuilder<'context>

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

Formats the value using the given formatter.