Function pop

aiscript-vm/src/builtins/array.rs:142–174

Remove the item at the given position and return it

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

// Remove the item at the given position and return it
fn pop<'gc>(
    mc: &'gc Mutation<'gc>,
    receiver: Value<'gc>,
    args: Vec<Value<'gc>>,
) -> Result<Value<'gc>, VmError> {
    let list = receiver.as_array()?;
    let mut list_mut = list.borrow_mut(mc);

    // If list is empty, return an error
    if list_mut.data.is_empty() {
        return Err(VmError::RuntimeError(
            "pop: cannot pop from empty list".into(),
        ));
    }

    let index = if args.is_empty() {
        // Default to the last element if no index is provided
        list_mut.data.len() - 1
    } else {
        float_arg!(&args, 0, "pop")? as usize
    };

    // Check if index is valid
    if index >= list_mut.data.len() {
        return Err(VmError::RuntimeError(format!(
            "pop: index {} out of range",
            index
        )));
    }

    // Remove and return the value at the specified position
    Ok(list_mut.data.remove(index))
}

// Remove all items from the list
fn clear<'gc>(