feat(zcoin): allow ARRR/ZCOIN to compile in wasm (#1805)

This commit refactors ARRR/ZCOIN code to be compiled in WebAssembly (WASM). It paves the way for subsequent implementation of the empty/todo functions related to WASM storage and other functionalities.

---------
Signed-off-by: borngraced <[email protected]>

mm2src/coins/Cargo.toml

@@ -101,6 +101,9 @@ uuid = { version = "1.2.2", features = ["fast-rng", "serde", "v4"] }
 # We don't need the default web3 features at all since we added our own web3 transport using shared HYPER instance.
 web3 = { git = "https://github.com/KomodoPlatform/rust-web3", tag = "v0.19.0", default-features = false }
 zbase32 = "0.1.2"
+zcash_client_backend = { git = "https://github.com/KomodoPlatform/librustzcash.git", tag = "k-1.3.0" }
+zcash_primitives = { features = ["transparent-inputs"], git = "https://github.com/KomodoPlatform/librustzcash.git", tag = "k-1.3.0" }
+zcash_proofs = { git = "https://github.com/KomodoPlatform/librustzcash.git", tag = "k-1.3.0" }
 
 [target.'cfg(all(not(target_os = "ios"), not(target_os = "android"), not(target_arch = "wasm32")))'.dependencies]
 bincode = { version = "1.3.3", default-features = false, optional = true }
@@ -140,10 +143,7 @@ tokio = { version = "1.20" }
 tokio-rustls = { version = "0.23" }
 tonic = { version = "0.7", features = ["tls", "tls-webpki-roots", "compression"] }
 webpki-roots = { version = "0.22" }
-zcash_client_backend = { git = "https://github.com/KomodoPlatform/librustzcash.git", tag = "k-1.3.0" }
 zcash_client_sqlite = { git = "https://github.com/KomodoPlatform/librustzcash.git", tag = "k-1.3.0" }
-zcash_primitives = { features = ["transparent-inputs"], git = "https://github.com/KomodoPlatform/librustzcash.git", tag = "k-1.3.0" }
-zcash_proofs = { git = "https://github.com/KomodoPlatform/librustzcash.git", tag = "k-1.3.0" }
 
 [target.'cfg(windows)'.dependencies]
 winapi = "0.3"

mm2src/coins/lp_coins.rs

@@ -81,6 +81,7 @@ use std::sync::atomic::Ordering as AtomicOrdering;
 use std::sync::Arc;
 use std::time::Duration;
 use utxo_signer::with_key_pair::UtxoSignWithKeyPairError;
+use zcash_primitives::transaction::Transaction as ZTransaction;
 
 cfg_native! {
     use crate::lightning::LightningCoin;
@@ -91,8 +92,6 @@ cfg_native! {
     use lightning_invoice::{Invoice, ParseOrSemanticError};
     use std::io;
     use std::path::PathBuf;
-    use zcash_primitives::transaction::Transaction as ZTransaction;
-    use z_coin::ZcoinProtocolInfo;
 }
 
 cfg_wasm32! {
@@ -287,8 +286,8 @@ use utxo::{BlockchainNetwork, GenerateTxError, UtxoFeeDetails, UtxoTx};
 pub mod nft;
 use nft::nft_errors::GetNftInfoError;
 
-#[cfg(not(target_arch = "wasm32"))] pub mod z_coin;
-#[cfg(not(target_arch = "wasm32"))] use z_coin::ZCoin;
+pub mod z_coin;
+use z_coin::{ZCoin, ZcoinProtocolInfo};
 
 pub type TransactionFut = Box<dyn Future<Item = TransactionEnum, Error = TransactionErr> + Send>;
 pub type BalanceResult<T> = Result<T, MmError<BalanceError>>;
@@ -467,7 +466,6 @@ pub trait Transaction: fmt::Debug + 'static {
 pub enum TransactionEnum {
     UtxoTx(UtxoTx),
     SignedEthTx(SignedEthTx),
-    #[cfg(not(target_arch = "wasm32"))]
     ZTransaction(ZTransaction),
     CosmosTransaction(CosmosTransaction),
     #[cfg(not(target_arch = "wasm32"))]
@@ -476,7 +474,6 @@ pub enum TransactionEnum {
 
 ifrom!(TransactionEnum, UtxoTx);
 ifrom!(TransactionEnum, SignedEthTx);
-#[cfg(not(target_arch = "wasm32"))]
 ifrom!(TransactionEnum, ZTransaction);
 #[cfg(not(target_arch = "wasm32"))]
 ifrom!(TransactionEnum, LightningPayment);
@@ -496,7 +493,6 @@ impl Deref for TransactionEnum {
         match self {
             TransactionEnum::UtxoTx(ref t) => t,
             TransactionEnum::SignedEthTx(ref t) => t,
-            #[cfg(not(target_arch = "wasm32"))]
             TransactionEnum::ZTransaction(ref t) => t,
             TransactionEnum::CosmosTransaction(ref t) => t,
             #[cfg(not(target_arch = "wasm32"))]
@@ -2341,7 +2337,6 @@ pub enum MmCoinEnum {
     QtumCoin(QtumCoin),
     Qrc20Coin(Qrc20Coin),
     EthCoin(EthCoin),
-    #[cfg(not(target_arch = "wasm32"))]
     ZCoin(ZCoin),
     Bch(BchCoin),
     SlpToken(SlpToken),
@@ -2427,7 +2422,6 @@ impl From<LightningCoin> for MmCoinEnum {
     fn from(c: LightningCoin) -> MmCoinEnum { MmCoinEnum::LightningCoin(c) }
 }
 
-#[cfg(not(target_arch = "wasm32"))]
 impl From<ZCoin> for MmCoinEnum {
     fn from(c: ZCoin) -> MmCoinEnum { MmCoinEnum::ZCoin(c) }
 }
@@ -2447,7 +2441,6 @@ impl Deref for MmCoinEnum {
             MmCoinEnum::TendermintToken(ref c) => c,
             #[cfg(not(target_arch = "wasm32"))]
             MmCoinEnum::LightningCoin(ref c) => c,
-            #[cfg(not(target_arch = "wasm32"))]
             MmCoinEnum::ZCoin(ref c) => c,
             MmCoinEnum::Test(ref c) => c,
             #[cfg(all(
@@ -2840,7 +2833,6 @@ pub enum CoinProtocol {
         token_contract_address: String,
         decimals: u8,
     },
-    #[cfg(not(target_arch = "wasm32"))]
     ZHTLC(ZcoinProtocolInfo),
 }
 
@@ -3093,7 +3085,6 @@ pub async fn lp_coininit(ctx: &MmArc, ticker: &str, req: &Json) -> Result<MmCoin
         },
         CoinProtocol::TENDERMINT { .. } => return ERR!("TENDERMINT protocol is not supported by lp_coininit"),
         CoinProtocol::TENDERMINTTOKEN(_) => return ERR!("TENDERMINTTOKEN protocol is not supported by lp_coininit"),
-        #[cfg(not(target_arch = "wasm32"))]
         CoinProtocol::ZHTLC { .. } => return ERR!("ZHTLC protocol is not supported by lp_coininit"),
         #[cfg(not(target_arch = "wasm32"))]
         CoinProtocol::LIGHTNING { .. } => return ERR!("Lightning protocol is not supported by lp_coininit"),
@@ -3686,7 +3677,6 @@ pub fn address_by_coin_conf_and_pubkey_str(
         CoinProtocol::SOLANA | CoinProtocol::SPLTOKEN { .. } => {
             ERR!("Solana pubkey is the public address - you do not need to use this rpc call.")
         },
-        #[cfg(not(target_arch = "wasm32"))]
         CoinProtocol::ZHTLC { .. } => ERR!("address_by_coin_conf_and_pubkey_str is not supported for ZHTLC protocol!"),
     }
 }