diff options
author | Valentin Popov <valentin@popov.link> | 2024-01-08 00:21:28 +0300 |
---|---|---|
committer | Valentin Popov <valentin@popov.link> | 2024-01-08 00:21:28 +0300 |
commit | 1b6a04ca5504955c571d1c97504fb45ea0befee4 (patch) | |
tree | 7579f518b23313e8a9748a88ab6173d5e030b227 /vendor/serde_json/tests/regression/issue845.rs | |
parent | 5ecd8cf2cba827454317368b68571df0d13d7842 (diff) | |
download | fparkan-1b6a04ca5504955c571d1c97504fb45ea0befee4.tar.xz fparkan-1b6a04ca5504955c571d1c97504fb45ea0befee4.zip |
Initial vendor packages
Signed-off-by: Valentin Popov <valentin@popov.link>
Diffstat (limited to 'vendor/serde_json/tests/regression/issue845.rs')
-rw-r--r-- | vendor/serde_json/tests/regression/issue845.rs | 73 |
1 files changed, 73 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 0000000..e8b0c0f --- /dev/null +++ b/vendor/serde_json/tests/regression/issue845.rs @@ -0,0 +1,73 @@ +#![allow(clippy::trait_duplication_in_bounds)] // https://github.com/rust-lang/rust-clippy/issues/8757 + +use serde::{Deserialize, Deserializer}; +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()); +} |