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use std::fmt;
/// A plist `uid` value. These are found exclusively in plists created by `NSKeyedArchiver`.
#[derive(Clone, Copy, Eq, Hash, PartialEq)]
pub struct Uid {
value: u64,
}
impl Uid {
/// Creates a new `Uid` containing the given value.
pub fn new(value: u64) -> Uid {
Uid { value }
}
/// Returns the value as a `u64`.
pub fn get(self) -> u64 {
self.value
}
}
impl fmt::Debug for Uid {
fn fmt(&self, f: &mut fmt::Formatter) -> Result<(), fmt::Error> {
self.value.fmt(f)
}
}
#[cfg(feature = "serde")]
pub mod serde_impls {
use serde::{
de::{Deserialize, Deserializer, Error, Visitor},
ser::{Serialize, Serializer},
};
use std::fmt;
use crate::Uid;
pub const UID_NEWTYPE_STRUCT_NAME: &str = "PLIST-UID";
impl Serialize for Uid {
fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where
S: Serializer,
{
serializer.serialize_newtype_struct(UID_NEWTYPE_STRUCT_NAME, &self.get())
}
}
struct UidNewtypeVisitor;
impl<'de> Visitor<'de> for UidNewtypeVisitor {
type Value = Uid;
fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
formatter.write_str("a plist uid")
}
fn visit_u64<E>(self, v: u64) -> Result<Self::Value, E>
where
E: Error,
{
UidU64Visitor.visit_u64(v)
}
fn visit_newtype_struct<D>(self, deserializer: D) -> Result<Self::Value, D::Error>
where
D: Deserializer<'de>,
{
deserializer.deserialize_u64(UidU64Visitor)
}
}
struct UidU64Visitor;
impl<'de> Visitor<'de> for UidU64Visitor {
type Value = Uid;
fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
formatter.write_str("a plist uid")
}
fn visit_u64<E>(self, v: u64) -> Result<Self::Value, E>
where
E: Error,
{
Ok(Uid::new(v))
}
}
impl<'de> Deserialize<'de> for Uid {
fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
where
D: Deserializer<'de>,
{
deserializer.deserialize_newtype_struct(UID_NEWTYPE_STRUCT_NAME, UidNewtypeVisitor)
}
}
}
|
