#[cfg(test)]
mod tests;
use crate::{
builtins::BuiltIn,
context::StandardObjects,
object::{internal_methods::get_prototype_from_constructor, ConstructorBuilder, ObjectData},
property::Attribute,
BoaProfiler, Context, JsResult, JsValue,
};
#[derive(Debug, Clone, Copy)]
pub(crate) struct Boolean;
impl BuiltIn for Boolean {
const NAME: &'static str = "Boolean";
fn attribute() -> Attribute {
Attribute::WRITABLE | Attribute::NON_ENUMERABLE | Attribute::CONFIGURABLE
}
fn init(context: &mut Context) -> (&'static str, JsValue, Attribute) {
let _timer = BoaProfiler::global().start_event(Self::NAME, "init");
let boolean_object = ConstructorBuilder::with_standard_object(
context,
Self::constructor,
context.standard_objects().boolean_object().clone(),
)
.name(Self::NAME)
.length(Self::LENGTH)
.method(Self::to_string, "toString", 0)
.method(Self::value_of, "valueOf", 0)
.build();
(Self::NAME, boolean_object.into(), Self::attribute())
}
}
impl Boolean {
pub(crate) const LENGTH: usize = 1;
pub(crate) fn constructor(
new_target: &JsValue,
args: &[JsValue],
context: &mut Context,
) -> JsResult<JsValue> {
let data = args.get(0).map(|x| x.to_boolean()).unwrap_or(false);
if new_target.is_undefined() {
return Ok(JsValue::new(data));
}
let prototype =
get_prototype_from_constructor(new_target, StandardObjects::boolean_object, context)?;
let boolean = JsValue::new_object(context);
boolean
.as_object()
.expect("this should be an object")
.set_prototype_instance(prototype.into());
boolean.set_data(ObjectData::boolean(data));
Ok(boolean)
}
fn this_boolean_value(value: &JsValue, context: &mut Context) -> JsResult<bool> {
match value {
JsValue::Boolean(boolean) => return Ok(*boolean),
JsValue::Object(ref object) => {
let object = object.borrow();
if let Some(boolean) = object.as_boolean() {
return Ok(boolean);
}
}
_ => {}
}
Err(context.construct_type_error("'this' is not a boolean"))
}
#[allow(clippy::wrong_self_convention)]
pub(crate) fn to_string(
this: &JsValue,
_: &[JsValue],
context: &mut Context,
) -> JsResult<JsValue> {
let boolean = Self::this_boolean_value(this, context)?;
Ok(JsValue::new(boolean.to_string()))
}
#[inline]
pub(crate) fn value_of(
this: &JsValue,
_: &[JsValue],
context: &mut Context,
) -> JsResult<JsValue> {
Ok(JsValue::new(Self::this_boolean_value(this, context)?))
}
}