Implement a bunch of traits for EquihashSolution
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@ -1,8 +1,11 @@
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//! Equihash Solution and related items.
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// use std::fmt;
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use std::{fmt, io};
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// use hex::ToHex;
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#[cfg(test)]
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use proptest::{arbitrary::Arbitrary, collection::vec, prelude::*};
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use crate::serialization::{SerializationError, ZcashDeserialize, ZcashSerialize};
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/// The size of an Equihash solution in bytes (always 1344).
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const EQUIHASH_SOLUTION_SIZE: usize = 1344;
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@ -15,8 +18,7 @@ const EQUIHASH_SOLUTION_SIZE: usize = 1344;
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///
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/// The size of an Equihash solution in bytes is always 1344 so the
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/// length of this type is fixed.
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#[derive(Clone)]
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pub struct EquihashSolution([u8; EQUIHASH_SOLUTION_SIZE]);
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pub struct EquihashSolution(pub [u8; EQUIHASH_SOLUTION_SIZE]);
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impl Default for EquihashSolution {
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fn default() -> Self {
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@ -24,15 +26,62 @@ impl Default for EquihashSolution {
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}
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}
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// TODO: fix hex crate import conflict with tracing-subscriber
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// impl fmt::Debug for EquihashSolution {
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// fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
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// f.write_str(&self.0.encode_hex::<String>())
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// }
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// }
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impl PartialEq<EquihashSolution> for EquihashSolution {
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fn eq(&self, other: &EquihashSolution) -> bool {
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self.0.as_ref() == other.0.as_ref()
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}
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}
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impl fmt::Debug for EquihashSolution {
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fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
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f.debug_tuple("EquihashSolution")
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.field(&hex::encode(&self.0[..]))
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.finish()
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}
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}
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// These impls all only exist because of array length restrictions.
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impl Copy for EquihashSolution {}
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impl Clone for EquihashSolution {
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fn clone(&self) -> Self {
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let mut bytes = [0; EQUIHASH_SOLUTION_SIZE];
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bytes[..].copy_from_slice(&self.0[..]);
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Self(bytes)
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}
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}
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impl Eq for EquihashSolution {}
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impl ZcashSerialize for EquihashSolution {
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fn zcash_serialize<W: io::Write>(&self, mut writer: W) -> Result<(), SerializationError> {
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writer.write_all(&self.0[..])?;
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Ok(())
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}
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}
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impl ZcashDeserialize for EquihashSolution {
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fn zcash_deserialize<R: io::Read>(mut reader: R) -> Result<Self, SerializationError> {
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let mut bytes = [0; EQUIHASH_SOLUTION_SIZE];
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reader.read_exact(&mut bytes[..])?;
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Ok(Self(bytes))
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}
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}
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#[cfg(test)]
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impl Arbitrary for EquihashSolution {
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type Parameters = ();
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fn arbitrary_with(_args: Self::Parameters) -> Self::Strategy {
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(vec(any::<u8>(), EQUIHASH_SOLUTION_SIZE))
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.prop_map(|v| {
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let mut bytes = [0; EQUIHASH_SOLUTION_SIZE];
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bytes.copy_from_slice(v.as_slice());
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return Self(bytes);
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})
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.boxed()
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}
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type Strategy = BoxedStrategy<Self>;
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}
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