1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140

use bolt_proto_derive::*;

pub(crate) const MARKER: u8 = 0xB4;
pub(crate) const SIGNATURE: u8 = 0x45;

#[derive(Debug, Clone, Hash, Eq, PartialEq, Signature, Marker, Serialize, Deserialize)]
pub struct Duration {
    pub(crate) months: i64,
    pub(crate) days: i64,
    pub(crate) seconds: i64,
    pub(crate) nanos: i32,
}

impl Duration {
    pub fn new(months: i64, days: i64, seconds: i64, nanos: i32) -> Self {
        Self {
            months,
            days,
            seconds,
            nanos,
        }
    }

    pub fn months(&self) -> i64 {
        self.months
    }

    pub fn days(&self) -> i64 {
        self.days
    }

    pub fn seconds(&self) -> i64 {
        self.seconds
    }

    pub fn nanos(&self) -> i32 {
        self.nanos
    }
}

impl From<std::time::Duration> for Duration {
    fn from(duration: std::time::Duration) -> Self {
        // This fits in an i64 because u64::MAX / (3600 * 24) < i64::MAX
        let days = (duration.as_secs() / (3600 * 24)) as i64;
        // This fits in an i64 since it will be less than 3600 * 24
        let seconds = (duration.as_secs() % (3600 * 24)) as i64;
        // This fits in an i32 because 0 <= nanos < 1e9 which is less than i32::MAX
        let nanos = duration.subsec_nanos() as i32;

        // Months are not well-defined in terms of seconds so let's not use them here
        Self {
            months: 0,
            days,
            seconds,
            nanos,
        }
    }
}

#[cfg(test)]
mod tests {
    use std::convert::TryFrom;
    use std::sync::{Arc, Mutex};

    use bytes::Bytes;

    use crate::serialization::*;
    use crate::value::integer::{MARKER_INT_16, MARKER_INT_32, MARKER_INT_64};

    use super::*;

    fn get_duration() -> Duration {
        Duration::new(7, 123_456_543, 54_213_945_693_251, 19287)
    }

    #[test]
    fn get_marker() {
        let duration = get_duration();
        assert_eq!(duration.get_marker().unwrap(), MARKER);
    }

    #[test]
    fn try_into_bytes() {
        let duration = get_duration();
        assert_eq!(
            duration.try_into_bytes().unwrap(),
            Bytes::from_static(&[
                MARKER,
                SIGNATURE,
                0x07,
                MARKER_INT_32,
                0x07,
                0x5B,
                0xCC,
                0x1F,
                MARKER_INT_64,
                0x00,
                0x00,
                0x31,
                0x4E,
                0xAA,
                0xF9,
                0x94,
                0x43,
                MARKER_INT_16,
                0x4B,
                0x57,
            ])
        );
    }

    #[test]
    fn try_from_bytes() {
        let duration = get_duration();
        let duration_bytes = &[
            0x07,
            MARKER_INT_32,
            0x07,
            0x5B,
            0xCC,
            0x1F,
            MARKER_INT_64,
            0x00,
            0x00,
            0x31,
            0x4E,
            0xAA,
            0xF9,
            0x94,
            0x43,
            MARKER_INT_16,
            0x4B,
            0x57,
        ];
        assert_eq!(
            Duration::try_from(Arc::new(Mutex::new(Bytes::from_static(duration_bytes)))).unwrap(),
            duration
        );
    }
}