macro_rules! doc_concat {
( $( #[doc = $doc:expr] $( $thing:tt )* )* ) => ( $( #[doc = $doc] $( $thing )* )* );
}
macro_rules! partial_eq_string {
($id:ty $([$( $g:ident ),*])?) => {
partial_eq_string!(@imp $(<$($g),*>)?, $id, str);
partial_eq_string!(@imp $(<$($g),*>)?, $id, &str);
partial_eq_string!(@imp $(<$($g),*>)?, $id, String);
partial_eq_string!(@imp $(<$($g),*>)?, str, $id);
partial_eq_string!(@imp $(<$($g),*>)?, &str, $id);
partial_eq_string!(@imp $(<$($g),*>)?, String, $id);
};
(@imp $(<$( $g:ident ),*>)?, $l:ty, $r:ty) => {
impl $(<$($g),*>)? ::std::cmp::PartialEq<$r> for $l {
fn eq(&self, other: &$r) -> bool {
::std::convert::AsRef::<str>::as_ref(self)
== ::std::convert::AsRef::<str>::as_ref(other)
}
}
}
}
macro_rules! as_str_based_impls {
($id:ty) => {
impl ::std::convert::AsRef<str> for $id {
fn as_ref(&self) -> &str {
self.as_str()
}
}
impl ::std::fmt::Display for $id {
fn fmt(&self, f: &mut ::std::fmt::Formatter<'_>) -> ::std::fmt::Result {
write!(f, "{}", self.as_str())
}
}
impl ::std::cmp::PartialEq for $id {
fn eq(&self, other: &Self) -> bool {
self.as_str() == other.as_str()
}
}
impl ::std::cmp::Eq for $id {}
impl ::std::cmp::PartialOrd for $id {
fn partial_cmp(&self, other: &Self) -> Option<::std::cmp::Ordering> {
::std::cmp::PartialOrd::partial_cmp(self.as_str(), other.as_str())
}
}
impl ::std::cmp::Ord for $id {
fn cmp(&self, other: &Self) -> ::std::cmp::Ordering {
::std::cmp::Ord::cmp(self.as_str(), other.as_str())
}
}
impl ::std::hash::Hash for $id {
fn hash<H: ::std::hash::Hasher>(&self, state: &mut H) {
self.as_str().hash(state);
}
}
#[cfg(feature = "serde")]
impl ::serde::Serialize for $id {
fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where
S: ::serde::Serializer,
{
serializer.serialize_str(self.as_str())
}
}
};
}
macro_rules! common_impls {
($id:ty, $try_from:ident, $desc:literal) => {
impl $id {
doc_concat! {
#[doc = concat!("Creates a string slice from this `", stringify!($id), "`")]
pub fn as_str(&self) -> &str {
&self.full_id
}
}
doc_concat! {
#[doc = concat!("Creates a byte slice from this `", stringify!($id), "`")]
pub fn as_bytes(&self) -> &[u8] {
self.full_id.as_bytes()
}
}
doc_concat! {
#[doc = concat!("Converts this `", stringify!($id), "` into a `String`")]
pub fn into_string(self) -> String {
self.full_id.into()
}
}
doc_concat! {
#[doc = concat!("Converts this `", stringify!($id), "` into a `Vec<u8>`")]
pub fn into_bytes(self) -> Vec<u8> {
Box::<[u8]>::from(self.full_id).into()
}
}
}
impl ::std::convert::From<$id> for ::std::string::String {
fn from(id: $id) -> Self {
id.into_string()
}
}
impl ::std::convert::From<$id> for ::std::vec::Vec<u8> {
fn from(id: $id) -> Self {
id.into_bytes()
}
}
impl ::std::str::FromStr for $id {
type Err = crate::Error;
fn from_str(s: &str) -> Result<Self, Self::Err> {
$try_from(s)
}
}
impl ::std::convert::TryFrom<&str> for $id {
type Error = crate::Error;
fn try_from(s: &str) -> Result<Self, Self::Error> {
$try_from(s)
}
}
impl ::std::convert::TryFrom<String> for $id {
type Error = crate::Error;
fn try_from(s: String) -> Result<Self, Self::Error> {
$try_from(s)
}
}
#[cfg(feature = "serde")]
impl<'de> ::serde::Deserialize<'de> for $id {
fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
where
D: ::serde::Deserializer<'de>,
{
crate::deserialize_id(deserializer, $desc)
}
}
as_str_based_impls!($id);
partial_eq_string!($id);
};
}
macro_rules! opaque_identifier {
(
$( #[doc = $docs:literal] )*
$vis:vis type $id:ident;
) => {
$( #[doc = $docs] )*
#[repr(transparent)]
pub struct $id(str);
::paste::paste! {
doc_concat! {
#[doc = concat!("An owned [", stringify!($id), "].")]
pub type [<$id Box>] = ::std::boxed::Box<$id>;
}
}
impl $id {
#[allow(clippy::transmute_ptr_to_ptr)]
fn from_borrowed(s: &str) -> &Self {
unsafe { ::std::mem::transmute(s) }
}
pub(super) fn from_owned(s: ::std::boxed::Box<str>) -> ::std::boxed::Box<Self> {
unsafe { ::std::mem::transmute(s) }
}
fn into_owned(self: ::std::boxed::Box<Self>) -> ::std::boxed::Box<str> {
unsafe { ::std::mem::transmute(self) }
}
doc_concat! {
#[doc = concat!("Creates a string slice from this `", stringify!($id), "`.")]
pub fn as_str(&self) -> &str {
&self.0
}
}
doc_concat! {
#[doc = concat!("Creates a byte slice from this `", stringify!($id), "`.")]
pub fn as_bytes(&self) -> &[u8] {
self.0.as_bytes()
}
}
}
impl ::std::fmt::Debug for $id {
fn fmt(&self, f: &mut ::std::fmt::Formatter<'_>) -> ::std::fmt::Result {
f.write_str(self.as_ref())
}
}
impl Clone for ::std::boxed::Box<$id> {
fn clone(&self) -> Self {
(**self).to_owned()
}
}
impl ToOwned for $id {
type Owned = ::std::boxed::Box<$id>;
fn to_owned(&self) -> Self::Owned {
Self::from_owned(self.0.to_owned().into_boxed_str())
}
}
impl From<&$id> for ::std::boxed::Box<$id> {
fn from(id: &$id) -> Self {
id.to_owned()
}
}
impl AsRef<str> for ::std::boxed::Box<$id> {
fn as_ref(&self) -> &str {
self.as_str()
}
}
impl<'a> From<&'a str> for &'a $id {
fn from(s: &'a str) -> Self {
$id::from_borrowed(s)
}
}
impl From<&str> for ::std::boxed::Box<$id> {
fn from(s: &str) -> Self {
$id::from_owned(s.into())
}
}
impl From<String> for ::std::boxed::Box<$id> {
fn from(s: String) -> Self {
$id::from_owned(s.into())
}
}
impl From<::std::boxed::Box<$id>> for String {
fn from(id: ::std::boxed::Box<$id>) -> Self {
id.into_owned().into()
}
}
#[cfg(feature = "serde")]
impl<'de> ::serde::Deserialize<'de> for ::std::boxed::Box<$id> {
fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
where
D: ::serde::Deserializer<'de>,
{
::std::boxed::Box::<str>::deserialize(deserializer).map($id::from_owned)
}
}
as_str_based_impls!($id);
partial_eq_string!($id);
partial_eq_string!(::std::boxed::Box<$id>);
};
}