celestia_tendermint/vote/
validator_index.rs

1use core::{
2    convert::{TryFrom, TryInto},
3    fmt::{self, Debug, Display},
4    str::FromStr,
5};
6
7use crate::{error::Error, prelude::*};
8
9/// ValidatorIndex for a particular Vote
10#[derive(Copy, Clone, Eq, Hash, PartialEq, PartialOrd, Ord)]
11pub struct ValidatorIndex(u32);
12
13impl TryFrom<i32> for ValidatorIndex {
14    type Error = Error;
15
16    fn try_from(value: i32) -> Result<Self, Self::Error> {
17        Ok(ValidatorIndex(
18            value.try_into().map_err(Error::negative_validator_index)?,
19        ))
20    }
21}
22
23impl From<ValidatorIndex> for i32 {
24    fn from(value: ValidatorIndex) -> Self {
25        value.value() as i32 // does not overflow. The value is <= i32::MAX
26    }
27}
28
29impl TryFrom<u32> for ValidatorIndex {
30    type Error = Error;
31
32    fn try_from(value: u32) -> Result<Self, Self::Error> {
33        let _val: i32 = value.try_into().map_err(Error::integer_overflow)?;
34        Ok(ValidatorIndex(value))
35    }
36}
37
38impl From<ValidatorIndex> for u32 {
39    fn from(value: ValidatorIndex) -> Self {
40        value.value()
41    }
42}
43
44impl TryFrom<usize> for ValidatorIndex {
45    type Error = Error;
46
47    fn try_from(value: usize) -> Result<Self, Self::Error> {
48        Ok(ValidatorIndex(
49            value.try_into().map_err(Error::integer_overflow)?,
50        ))
51    }
52}
53
54impl From<ValidatorIndex> for usize {
55    fn from(value: ValidatorIndex) -> Self {
56        value
57            .value()
58            .try_into()
59            .expect("Integer overflow: system usize maximum smaller than i32 maximum")
60    }
61}
62
63impl ValidatorIndex {
64    /// Get inner integer value. Alternative to `.0` or `.into()`
65    pub fn value(&self) -> u32 {
66        self.0
67    }
68}
69
70impl Debug for ValidatorIndex {
71    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
72        write!(f, "vote::ValidatorIndex({})", self.0)
73    }
74}
75
76impl Display for ValidatorIndex {
77    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
78        write!(f, "{}", self.0)
79    }
80}
81
82impl FromStr for ValidatorIndex {
83    type Err = Error;
84
85    fn from_str(s: &str) -> Result<Self, Error> {
86        ValidatorIndex::try_from(
87            s.parse::<u32>()
88                .map_err(|e| Error::parse_int("validator index decode".to_string(), e))?,
89        )
90    }
91}
celestia_tendermint/vote/validator_index.rs

celestia_tendermint/vote/
validator_index.rs
