Function last_index_of

aiscript-vm/src/builtins/string.rs:184–199

(
    _mc: &'gc Mutation<'gc>,
    receiver: Value<'gc>,
    args: Vec<Value<'gc>>,
)

}

fn last_index_of<'gc>(
    _mc: &'gc Mutation<'gc>,
    receiver: Value<'gc>,
    args: Vec<Value<'gc>>,
) -> Result<Value<'gc>, VmError> {
    let substr = string_arg!(&args, 0, "last_index_of")?;

    let s = receiver.as_string_value()?;
    let s = s.as_str();
    let substr = substr.to_str().unwrap();

    match s.rfind(substr) {
        Some(pos) => Ok(Value::Number(pos as f64)),
        None => Ok(Value::Number(-1.0)),
    }
}

// Substring and slicing
fn substring<'gc>(