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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:02:58 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:02:58 +0000 |
commit | 698f8c2f01ea549d77d7dc3338a12e04c11057b9 (patch) | |
tree | 173a775858bd501c378080a10dca74132f05bc50 /vendor/serde_json/tests/regression/issue845.rs | |
parent | Initial commit. (diff) | |
download | rustc-698f8c2f01ea549d77d7dc3338a12e04c11057b9.tar.xz rustc-698f8c2f01ea549d77d7dc3338a12e04c11057b9.zip |
Adding upstream version 1.64.0+dfsg1.upstream/1.64.0+dfsg1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | vendor/serde_json/tests/regression/issue845.rs | 74 |
1 files changed, 74 insertions, 0 deletions
diff --git a/vendor/serde_json/tests/regression/issue845.rs b/vendor/serde_json/tests/regression/issue845.rs new file mode 100644 index 000000000..56037ae66 --- /dev/null +++ b/vendor/serde_json/tests/regression/issue845.rs @@ -0,0 +1,74 @@ +#![allow(clippy::trait_duplication_in_bounds)] // https://github.com/rust-lang/rust-clippy/issues/8757 + +use serde::{Deserialize, Deserializer}; +use std::convert::TryFrom; +use std::fmt::{self, Display}; +use std::marker::PhantomData; +use std::str::FromStr; + +pub struct NumberVisitor<T> { + marker: PhantomData<T>, +} + +impl<'de, T> serde::de::Visitor<'de> for NumberVisitor<T> +where + T: TryFrom<u64> + TryFrom<i64> + FromStr, + <T as TryFrom<u64>>::Error: Display, + <T as TryFrom<i64>>::Error: Display, + <T as FromStr>::Err: Display, +{ + type Value = T; + + fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result { + formatter.write_str("an integer or string") + } + + fn visit_u64<E>(self, v: u64) -> Result<Self::Value, E> + where + E: serde::de::Error, + { + T::try_from(v).map_err(serde::de::Error::custom) + } + + fn visit_i64<E>(self, v: i64) -> Result<Self::Value, E> + where + E: serde::de::Error, + { + T::try_from(v).map_err(serde::de::Error::custom) + } + + fn visit_str<E>(self, v: &str) -> Result<Self::Value, E> + where + E: serde::de::Error, + { + v.parse().map_err(serde::de::Error::custom) + } +} + +fn deserialize_integer_or_string<'de, D, T>(deserializer: D) -> Result<T, D::Error> +where + D: Deserializer<'de>, + T: TryFrom<u64> + TryFrom<i64> + FromStr, + <T as TryFrom<u64>>::Error: Display, + <T as TryFrom<i64>>::Error: Display, + <T as FromStr>::Err: Display, +{ + deserializer.deserialize_any(NumberVisitor { + marker: PhantomData, + }) +} + +#[derive(Deserialize, Debug)] +pub struct Struct { + #[serde(deserialize_with = "deserialize_integer_or_string")] + pub i: i64, +} + +#[test] +fn test() { + let j = r#" {"i":100} "#; + println!("{:?}", serde_json::from_str::<Struct>(j).unwrap()); + + let j = r#" {"i":"100"} "#; + println!("{:?}", serde_json::from_str::<Struct>(j).unwrap()); +} |