casper_types/account/
weight.rs

1use alloc::vec::Vec;
2
3#[cfg(feature = "datasize")]
4use datasize::DataSize;
5use serde::{Deserialize, Serialize};
6
7use crate::{
8    bytesrepr::{self, Error, FromBytes, ToBytes, U8_SERIALIZED_LENGTH},
9    CLType, CLTyped,
10};
11
12/// The number of bytes in a serialized [`Weight`].
13pub const WEIGHT_SERIALIZED_LENGTH: usize = U8_SERIALIZED_LENGTH;
14
15/// The weight attributed to a given [`AccountHash`](super::AccountHash) in an account's associated
16/// keys.
17#[derive(PartialOrd, Ord, PartialEq, Eq, Clone, Copy, Debug, Serialize, Deserialize)]
18#[cfg_attr(feature = "datasize", derive(DataSize))]
19pub struct Weight(u8);
20
21impl Weight {
22    /// Maximum possible weight.
23    pub const MAX: Weight = Weight(u8::MAX);
24
25    /// Constructs a new `Weight`.
26    pub const fn new(weight: u8) -> Weight {
27        Weight(weight)
28    }
29
30    /// Returns the value of `self` as a `u8`.
31    pub fn value(self) -> u8 {
32        self.0
33    }
34}
35
36impl ToBytes for Weight {
37    fn to_bytes(&self) -> Result<Vec<u8>, Error> {
38        self.0.to_bytes()
39    }
40
41    fn serialized_length(&self) -> usize {
42        WEIGHT_SERIALIZED_LENGTH
43    }
44
45    fn write_bytes(&self, writer: &mut Vec<u8>) -> Result<(), bytesrepr::Error> {
46        writer.push(self.0);
47        Ok(())
48    }
49}
50
51impl FromBytes for Weight {
52    fn from_bytes(bytes: &[u8]) -> Result<(Self, &[u8]), Error> {
53        let (byte, rem) = u8::from_bytes(bytes)?;
54        Ok((Weight::new(byte), rem))
55    }
56}
57
58impl CLTyped for Weight {
59    fn cl_type() -> CLType {
60        CLType::U8
61    }
62}
casper_types/account/weight.rs

casper_types/account/
weight.rs
