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use crate::{
builtins::{
function::NativeFunctionData,
object::{ObjectKind, PROTOTYPE},
value::{to_value, ResultValue, Value, ValueData},
},
exec::Interpreter,
};
use gc::Gc;
pub fn make_error(this: &Value, args: &[Value], _: &mut Interpreter) -> ResultValue {
if !args.is_empty() {
this.set_field_slice(
"message",
to_value(
args.get(0)
.expect("failed getting error message")
.to_string(),
),
);
}
this.set_kind(ObjectKind::Error);
Ok(Gc::new(ValueData::Undefined))
}
pub fn to_string(this: &Value, _: &[Value], _: &mut Interpreter) -> ResultValue {
let name = this.get_field_slice("name");
let message = this.get_field_slice("message");
Ok(to_value(format!("{}: {}", name, message)))
}
pub fn _create(global: &Value) -> Value {
let prototype = ValueData::new_obj(Some(global));
prototype.set_field_slice("message", to_value(""));
prototype.set_field_slice("name", to_value("Error"));
make_builtin_fn!(to_string, named "toString", of prototype);
let error = to_value(make_error as NativeFunctionData);
error.set_field_slice(PROTOTYPE, prototype);
error
}
pub fn init(global: &Value) {
global.set_field_slice("Error", _create(global));
}