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// SPDX-License-Identifier: GPL-2.0
//! Errors for the [`Vec`] type.
use core::fmt::{self, Debug, Formatter};
use kernel::prelude::*;
/// Error type for [`Vec::push_within_capacity`].
pub struct PushError<T>(pub T);
impl<T> Debug for PushError<T> {
fn fmt(&self, f: &mut Formatter<'_>) -> fmt::Result {
write!(f, "Not enough capacity")
}
}
impl<T> From<PushError<T>> for Error {
fn from(_: PushError<T>) -> Error {
// Returning ENOMEM isn't appropriate because the system is not out of memory. The vector
// is just full and we are refusing to resize it.
EINVAL
}
}
/// Error type for [`Vec::remove`].
pub struct RemoveError;
impl Debug for RemoveError {
fn fmt(&self, f: &mut Formatter<'_>) -> fmt::Result {
write!(f, "Index out of bounds")
}
}
impl From<RemoveError> for Error {
fn from(_: RemoveError) -> Error {
EINVAL
}
}
/// Error type for [`Vec::insert_within_capacity`].
pub enum InsertError<T> {
/// The value could not be inserted because the index is out of bounds.
IndexOutOfBounds(T),
/// The value could not be inserted because the vector is out of capacity.
OutOfCapacity(T),
}
impl<T> Debug for InsertError<T> {
fn fmt(&self, f: &mut Formatter<'_>) -> fmt::Result {
match self {
InsertError::IndexOutOfBounds(_) => write!(f, "Index out of bounds"),
InsertError::OutOfCapacity(_) => write!(f, "Not enough capacity"),
}
}
}
impl<T> From<InsertError<T>> for Error {
fn from(_: InsertError<T>) -> Error {
EINVAL
}
}
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