chain: move serde_helpers into serialization.

zebra-chain/src/commitments/sapling.rs

@@ -14,8 +14,9 @@ use rand_core::{CryptoRng, RngCore};
 
 use crate::{
     keys::sapling::{find_group_hash, Diversifier, TransmissionKey},
-    serde_helpers,
-    serialization::{ReadZcashExt, SerializationError, ZcashDeserialize, ZcashSerialize},
+    serialization::{
+        serde_helpers, ReadZcashExt, SerializationError, ZcashDeserialize, ZcashSerialize,
+    },
     types::amount::{Amount, NonNegative},
 };
 

zebra-chain/src/equihash_solution.rs

@@ -1,10 +1,8 @@
 //! Equihash Solution and related items.
 
-use crate::{
-    serde_helpers,
-    serialization::{
-        ReadZcashExt, SerializationError, WriteZcashExt, ZcashDeserialize, ZcashSerialize,
-    },
+use crate::serialization::{
+    serde_helpers, ReadZcashExt, SerializationError, WriteZcashExt, ZcashDeserialize,
+    ZcashSerialize,
 };
 use std::{fmt, io};
 

zebra-chain/src/keys/sapling.rs

@@ -31,8 +31,9 @@ use proptest_derive::Arbitrary;
 
 use crate::{
     redjubjub::{self, SpendAuth},
-    serde_helpers,
-    serialization::{ReadZcashExt, SerializationError, ZcashDeserialize, ZcashSerialize},
+    serialization::{
+        serde_helpers, ReadZcashExt, SerializationError, ZcashDeserialize, ZcashSerialize,
+    },
     Network,
 };
 

zebra-chain/src/lib.rs

@@ -12,7 +12,6 @@
 extern crate serde;
 
 mod merkle_tree;
-mod serde_helpers;
 
 pub mod addresses;
 pub mod block;

zebra-chain/src/notes/sapling/ciphertexts.rs

@@ -3,10 +3,7 @@ use std::{fmt, io};
 #[cfg(test)]
 use proptest::{arbitrary::any, prelude::*};
 
-use crate::{
-    serde_helpers,
-    serialization::{SerializationError, ZcashDeserialize, ZcashSerialize},
-};
+use crate::serialization::{serde_helpers, SerializationError, ZcashDeserialize, ZcashSerialize};
 
 /// A ciphertext component for encrypted output notes.
 #[derive(Deserialize, Serialize)]

zebra-chain/src/notes/sprout/ciphertexts.rs

@@ -5,10 +5,7 @@ use proptest::{arbitrary::any, prelude::*};
 
 use serde::{Deserialize, Serialize};
 
-use crate::{
-    serde_helpers,
-    serialization::{SerializationError, ZcashDeserialize, ZcashSerialize},
-};
+use crate::serialization::{serde_helpers, SerializationError, ZcashDeserialize, ZcashSerialize};
 
 /// A ciphertext component for encrypted output notes.
 #[derive(Serialize, Deserialize)]

zebra-chain/src/proofs/bctv14.rs

@@ -2,8 +2,7 @@ use std::{fmt, io};
 
 use serde::{Deserialize, Serialize};
 
-use crate::serde_helpers;
-use crate::serialization::{SerializationError, ZcashDeserialize, ZcashSerialize};
+use crate::serialization::{serde_helpers, SerializationError, ZcashDeserialize, ZcashSerialize};
 
 /// An encoding of a BCTV14 proof, as used in Zcash.
 #[derive(Serialize, Deserialize)]

zebra-chain/src/proofs/groth16.rs

@@ -1,8 +1,7 @@
 use serde::{Deserialize, Serialize};
 use std::{fmt, io};
 
-use crate::serde_helpers;
-use crate::serialization::{SerializationError, ZcashDeserialize, ZcashSerialize};
+use crate::serialization::{serde_helpers, SerializationError, ZcashDeserialize, ZcashSerialize};
 
 /// An encoding of a Groth16 proof, as used in Zcash.
 #[derive(Serialize, Deserialize)]

zebra-chain/src/serialization.rs

@@ -12,6 +12,8 @@ mod write_zcash;
 mod zcash_deserialize;
 mod zcash_serialize;
 
+pub(crate) mod serde_helpers;
+
 pub mod sha256d;
 
 pub use error::SerializationError;

zebra-chain/src/serialization/serde_helpers.rs

@@ -1,18 +1,18 @@
-use super::equihash_solution::EQUIHASH_SOLUTION_SIZE;
 use serde_big_array::big_array;
 
 big_array! {
     BigArray;
-    +EQUIHASH_SOLUTION_SIZE,
+    + 1344, // `EquihashSolution`
     80,   // `sapling::OutCiphertext`
     580,  // `sapling::EncryptedCiphertext`
     601,  // `sprout::EncryptedCiphertext`
-    296, // `bctv14::Bctv14Proof`
+    296,  // `Bctv14Proof`
+    196,  // `Groth16Proof`
 }
 
 #[derive(Deserialize, Serialize)]
 #[serde(remote = "jubjub::AffinePoint")]
-pub(crate) struct AffinePoint {
+pub struct AffinePoint {
     #[serde(getter = "jubjub::AffinePoint::to_bytes")]
     bytes: [u8; 32],
 }
@@ -25,7 +25,7 @@ impl From<AffinePoint> for jubjub::AffinePoint {
 
 #[derive(Deserialize, Serialize)]
 #[serde(remote = "jubjub::Fq")]
-pub(crate) struct Fq {
+pub struct Fq {
     #[serde(getter = "jubjub::Fq::to_bytes")]
     bytes: [u8; 32],
 }
@@ -38,7 +38,7 @@ impl From<Fq> for jubjub::Fq {
 
 #[derive(Deserialize, Serialize)]
 #[serde(remote = "futures::future::Either")]
-pub(crate) enum Either<A, B> {
+pub enum Either<A, B> {
     Left(A),
     Right(B),
 }

zebra-chain/src/transaction/shielded_data.rs

@@ -2,7 +2,7 @@ use crate::{
     commitments, keys, notes,
     proofs::Groth16Proof,
     redjubjub::{self, Binding, SpendAuth},
-    serde_helpers,
+    serialization::serde_helpers,
     treestate::note_commitment_tree::SaplingNoteTreeRootHash,
 };
 use futures::future::Either;