From 4e8199b572f2035b7749cba276ece3a26630d23e Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Wed, 17 Apr 2024 14:18:21 +0200
Subject: Adding upstream version 1.67.1+dfsg1.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 vendor/icu_locid/src/serde.rs | 135 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 135 insertions(+)
 create mode 100644 vendor/icu_locid/src/serde.rs

(limited to 'vendor/icu_locid/src/serde.rs')

diff --git a/vendor/icu_locid/src/serde.rs b/vendor/icu_locid/src/serde.rs
new file mode 100644
index 000000000..3bfe30388
--- /dev/null
+++ b/vendor/icu_locid/src/serde.rs
@@ -0,0 +1,135 @@
+// This file is part of ICU4X. For terms of use, please see the file
+// called LICENSE at the top level of the ICU4X source tree
+// (online at: https://github.com/unicode-org/icu4x/blob/main/LICENSE ).
+
+use crate::LanguageIdentifier;
+use alloc::string::ToString;
+use serde::{Deserialize, Deserializer, Serialize, Serializer};
+
+impl Serialize for LanguageIdentifier {
+    fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
+    where
+        S: Serializer,
+    {
+        serializer.serialize_str(&self.to_string())
+    }
+}
+
+impl<'de> Deserialize<'de> for LanguageIdentifier {
+    fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
+    where
+        D: Deserializer<'de>,
+    {
+        struct LanguageIdentifierVisitor;
+
+        impl<'de> serde::de::Visitor<'de> for LanguageIdentifierVisitor {
+            type Value = LanguageIdentifier;
+
+            fn expecting(&self, formatter: &mut core::fmt::Formatter<'_>) -> core::fmt::Result {
+                write!(formatter, "a valid Unicode Language Identifier")
+            }
+
+            fn visit_str<E>(self, s: &str) -> Result<Self::Value, E>
+            where
+                E: serde::de::Error,
+            {
+                s.parse::<LanguageIdentifier>()
+                    .map_err(serde::de::Error::custom)
+            }
+        }
+
+        deserializer.deserialize_string(LanguageIdentifierVisitor)
+    }
+}
+
+#[test]
+fn json() {
+    use crate::langid;
+    use crate::subtags::{Language, Region, Script};
+
+    assert_eq!(
+        serde_json::to_string(&langid!("en-US")).unwrap(),
+        r#""en-US""#
+    );
+    assert_eq!(
+        serde_json::from_str::<LanguageIdentifier>(r#""en-US""#).unwrap(),
+        langid!("en-US")
+    );
+    assert!(serde_json::from_str::<LanguageIdentifier>(r#""2Xs""#).is_err());
+
+    assert_eq!(
+        serde_json::to_string(&"fr".parse::<Language>().unwrap()).unwrap(),
+        r#""fr""#
+    );
+    assert_eq!(
+        serde_json::from_str::<Language>(r#""fr""#).unwrap(),
+        "fr".parse::<Language>().unwrap()
+    );
+    assert!(serde_json::from_str::<Language>(r#""2Xs""#).is_err());
+
+    assert_eq!(
+        serde_json::to_string(&"Latn".parse::<Script>().unwrap()).unwrap(),
+        r#""Latn""#
+    );
+    assert_eq!(
+        serde_json::from_str::<Script>(r#""Latn""#).unwrap(),
+        "Latn".parse::<Script>().unwrap()
+    );
+    assert!(serde_json::from_str::<Script>(r#""2Xs""#).is_err());
+
+    assert_eq!(
+        serde_json::to_string(&"US".parse::<Region>().unwrap()).unwrap(),
+        r#""US""#
+    );
+    assert_eq!(
+        serde_json::from_str::<Region>(r#""US""#).unwrap(),
+        "US".parse::<Region>().unwrap()
+    );
+    assert!(serde_json::from_str::<Region>(r#""2Xs""#).is_err());
+}
+
+#[test]
+fn postcard() {
+    use crate::langid;
+    use crate::subtags::{Language, Region, Script};
+
+    assert_eq!(
+        postcard::to_stdvec(&langid!("en-US")).unwrap(),
+        &[5, b'e', b'n', b'-', b'U', b'S']
+    );
+    assert_eq!(
+        postcard::from_bytes::<LanguageIdentifier>(&[5, b'e', b'n', b'-', b'U', b'S']).unwrap(),
+        langid!("en-US")
+    );
+    assert!(postcard::from_bytes::<LanguageIdentifier>(&[3, b'2', b'X', b's']).is_err());
+
+    assert_eq!(
+        postcard::to_stdvec(&"fr".parse::<Language>().unwrap()).unwrap(),
+        b"fr\0"
+    );
+    assert_eq!(
+        postcard::from_bytes::<Language>(b"fr\0").unwrap(),
+        "fr".parse::<Language>().unwrap()
+    );
+    assert!(postcard::from_bytes::<Language>(b"2Xs").is_err());
+
+    assert_eq!(
+        postcard::to_stdvec(&"Latn".parse::<Script>().unwrap()).unwrap(),
+        b"Latn"
+    );
+    assert_eq!(
+        postcard::from_bytes::<Script>(b"Latn").unwrap(),
+        "Latn".parse::<Script>().unwrap()
+    );
+    assert!(postcard::from_bytes::<Script>(b"2Xss").is_err());
+
+    assert_eq!(
+        postcard::to_stdvec(&"US".parse::<Region>().unwrap()).unwrap(),
+        b"US\0"
+    );
+    assert_eq!(
+        postcard::from_bytes::<Region>(b"US\0").unwrap(),
+        "US".parse::<Region>().unwrap()
+    );
+    assert!(postcard::from_bytes::<Region>(b"2Xs").is_err());
+}
-- 
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