f304c04d1d
git-subtree-dir: ruma-events git-subtree-mainline: d59a616e2c363507a89c92f34aa67e86ee2cfb49 git-subtree-split: 00692d532e26f58d48ead9589dc823403c6e59a5
31 lines
808 B
Rust
31 lines
808 B
Rust
use serde::de::DeserializeOwned;
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use serde_json::Value as JsonValue;
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pub fn try_variant_from_value<T, U, E>(value: JsonValue, variant: fn(T) -> U) -> Result<U, E>
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where
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T: DeserializeOwned,
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E: serde::de::Error,
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{
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serde_json::from_value(value)
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.map(variant)
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.map_err(serde_json_error_to_generic_de_error)
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}
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pub fn serde_json_error_to_generic_de_error<E: serde::de::Error>(error: serde_json::Error) -> E {
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E::custom(error.to_string())
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}
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pub fn get_field<T, E>(value: &JsonValue, field: &'static str) -> Result<T, E>
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where
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T: DeserializeOwned,
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E: serde::de::Error,
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{
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serde_json::from_value(
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value
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.get(field)
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.cloned()
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.ok_or_else(|| E::missing_field(field))?,
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)
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.map_err(serde_json_error_to_generic_de_error)
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}
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