diff options
Diffstat (limited to 'third_party/rust/serde_json/src/value/mod.rs')
| -rw-r--r-- | third_party/rust/serde_json/src/value/mod.rs | 30 |
1 files changed, 26 insertions, 4 deletions
diff --git a/third_party/rust/serde_json/src/value/mod.rs b/third_party/rust/serde_json/src/value/mod.rs index 470b6b24da..b3f51ea0db 100644 --- a/third_party/rust/serde_json/src/value/mod.rs +++ b/third_party/rust/serde_json/src/value/mod.rs @@ -106,6 +106,7 @@ pub use crate::map::Map; pub use crate::number::Number; #[cfg(feature = "raw_value")] +#[cfg_attr(docsrs, doc(cfg(feature = "raw_value")))] pub use crate::raw::{to_raw_value, RawValue}; /// Represents any valid JSON value. @@ -182,11 +183,11 @@ impl Debug for Value { Value::Number(number) => Debug::fmt(number, formatter), Value::String(string) => write!(formatter, "String({:?})", string), Value::Array(vec) => { - formatter.write_str("Array ")?; + tri!(formatter.write_str("Array ")); Debug::fmt(vec, formatter) } Value::Object(map) => { - formatter.write_str("Object ")?; + tri!(formatter.write_str("Object ")); Debug::fmt(map, formatter) } } @@ -514,6 +515,28 @@ impl Value { } } + /// If the `Value` is a Number, returns the associated [`Number`]. Returns + /// None otherwise. + /// + /// ``` + /// # use serde_json::{json, Number}; + /// # + /// let v = json!({ "a": 1, "b": 2.2, "c": -3, "d": "4" }); + /// + /// assert_eq!(v["a"].as_number(), Some(&Number::from(1u64))); + /// assert_eq!(v["b"].as_number(), Some(&Number::from_f64(2.2).unwrap())); + /// assert_eq!(v["c"].as_number(), Some(&Number::from(-3i64))); + /// + /// // The string `"4"` is not a number. + /// assert_eq!(v["d"].as_number(), None); + /// ``` + pub fn as_number(&self) -> Option<&Number> { + match self { + Value::Number(number) => Some(number), + _ => None, + } + } + /// Returns true if the `Value` is an integer between `i64::MIN` and /// `i64::MAX`. /// @@ -889,7 +912,6 @@ mod ser; /// ``` /// use serde::Serialize; /// use serde_json::json; -/// /// use std::error::Error; /// /// #[derive(Serialize)] @@ -898,7 +920,7 @@ mod ser; /// location: String, /// } /// -/// fn compare_json_values() -> Result<(), Box<Error>> { +/// fn compare_json_values() -> Result<(), Box<dyn Error>> { /// let u = User { /// fingerprint: "0xF9BA143B95FF6D82".to_owned(), /// location: "Menlo Park, CA".to_owned(), |