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use super::Node;
use crate::{
exec::Executable,
exec::InterpreterState,
gc::{Finalize, Trace},
Context, JsResult, JsValue,
};
use std::fmt;
#[cfg(feature = "deser")]
use serde::{Deserialize, Serialize};
#[cfg(test)]
mod tests;
#[cfg_attr(feature = "deser", derive(Serialize, Deserialize))]
#[derive(Clone, Debug, Trace, Finalize, PartialEq)]
pub struct Break {
label: Option<Box<str>>,
}
impl Break {
pub fn new<OL, L>(label: OL) -> Self
where
L: Into<Box<str>>,
OL: Into<Option<L>>,
{
Self {
label: label.into().map(L::into),
}
}
pub fn label(&self) -> Option<&str> {
self.label.as_ref().map(Box::as_ref)
}
}
impl Executable for Break {
fn run(&self, context: &mut Context) -> JsResult<JsValue> {
context
.executor()
.set_current_state(InterpreterState::Break(self.label().map(Box::from)));
Ok(JsValue::undefined())
}
}
impl fmt::Display for Break {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
write!(
f,
"break{}",
if self.label().is_some() {
format!(" {}", self.label().as_ref().unwrap())
} else {
String::new()
}
)
}
}
impl From<Break> for Node {
fn from(break_smt: Break) -> Node {
Self::Break(break_smt)
}
}