56 lines
1.2 KiB
Rust
56 lines
1.2 KiB
Rust
use std::{
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fmt::{self, Display, Formatter},
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sync::Arc,
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};
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use serde::{de::Visitor, Deserialize, Serialize};
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#[derive(Clone, Debug, Hash, Eq, PartialEq, PartialOrd, Ord)]
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pub struct Identifier(Arc<String>);
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impl Identifier {
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pub fn new<T: ToString>(string: T) -> Self {
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Identifier(Arc::new(string.to_string()))
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}
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pub fn as_str(&self) -> &str {
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self.0.as_str()
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}
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}
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impl Display for Identifier {
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fn fmt(&self, f: &mut Formatter) -> fmt::Result {
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write!(f, "{}", self.0)
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}
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}
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impl Serialize for Identifier {
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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
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where
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S: serde::Serializer,
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{
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serializer.serialize_str(self.0.as_str())
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}
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}
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impl<'de> Deserialize<'de> for Identifier {
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fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
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where
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D: serde::Deserializer<'de>,
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{
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Ok(Identifier(Arc::new(
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deserializer.deserialize_string(StringVisitor)?,
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)))
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}
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}
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struct StringVisitor;
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impl<'de> Visitor<'de> for StringVisitor {
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type Value = String;
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fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
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formatter.write_str("a UTF-8 string")
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}
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}
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