use serde_json::Value as JsonValue;use toml::Value as TomlValue;/// Convert a `serde_json::Value` into a semantically equivalent `toml::Value`.pub fn json_to_toml(v: JsonValue) -> TomlValue {    match v {        JsonValue::Null => TomlValue::String(String::new()),        JsonValue::Bool(b) => TomlValue::Boolean(b),        JsonValue::Number(n) => {            if let Some(i) = n.as_i64() {                TomlValue::Integer(i)            } else if let Some(f) = n.as_f64() {                TomlValue::Float(f)            } else {                TomlValue::String(n.to_string())            }        }        JsonValue::String(s) => TomlValue::String(s),        JsonValue::Array(arr) => TomlValue::Array(arr.into_iter().map(json_to_toml).collect()),        JsonValue::Object(map) => {            let tbl = map                .into_iter()                .map(|(k, v)| (k, json_to_toml(v)))                .collect::<toml::value::Table>();            TomlValue::Table(tbl)        }    }}#[cfg(test)]mod tests {    use super::*;    use pretty_assertions::assert_eq;    use serde_json::json;    #[test]    fn json_number_to_toml() {        let json_value = json!(123);        assert_eq!(TomlValue::Integer(123), json_to_toml(json_value));    }    #[test]    fn json_array_to_toml() {        let json_value = json!([true, 1]);        assert_eq!(            TomlValue::Array(vec![TomlValue::Boolean(true), TomlValue::Integer(1)]),            json_to_toml(json_value)        );    }    #[test]    fn json_bool_to_toml() {        let json_value = json!(false);        assert_eq!(TomlValue::Boolean(false), json_to_toml(json_value));    }    #[test]    fn json_float_to_toml() {        let json_value = json!(1.25);        assert_eq!(TomlValue::Float(1.25), json_to_toml(json_value));    }    #[test]    fn json_null_to_toml() {        let json_value = serde_json::Value::Null;        assert_eq!(TomlValue::String(String::new()), json_to_toml(json_value));    }    #[test]    fn json_object_nested() {        let json_value = json!({ "outer": { "inner": 2 } });        let expected = {            let mut inner = toml::value::Table::new();            inner.insert("inner".into(), TomlValue::Integer(2));            let mut outer = toml::value::Table::new();            outer.insert("outer".into(), TomlValue::Table(inner));            TomlValue::Table(outer)        };        assert_eq!(json_to_toml(json_value), expected);    }}