Function deserialize

pub fn deserialize<'de, D>(
    deserializer: D,
) -> Result<Option<Timestamp>, D::Error>
where
    D: Deserializer<'de>,

Deserialize Option<Timestamp> from timestampValue or nullValue.

Examples

use serde_firestore_value::google::firestore::v1::{value::ValueType, MapValue, Value};
use serde_firestore_value::{from_value, with::option_timestamp};

#[derive(Debug, Eq, PartialEq, serde::Deserialize)]
struct S(#[serde(deserialize_with = "option_timestamp::deserialize")] Option<prost_types::Timestamp>);

// some
{
    let o = S(Some(prost_types::Timestamp {
        seconds: 1_i64,
        nanos: 2_i32,
    }));
    let v = Value {
        value_type: Some(ValueType::TimestampValue(prost_types::Timestamp {
            seconds: 1_i64,
            nanos: 2_i32,
        })),
    };
    let d = from_value::<'_, S>(&v)?;
    assert_eq!(d, o);
}

// none
{
    let o = S(None);
    let v = Value {
        value_type: Some(ValueType::NullValue(0_i32)),
    };
    let d = from_value::<'_, S>(&v)?;
    assert_eq!(d, o);
}