Add multi block scanning

rust-lightclient/src/address.rs

@@ -0,0 +1,56 @@
+//! Structs for handling supported address types.
+
+use pairing::bls12_381::Bls12;
+use sapling_crypto::primitives::PaymentAddress;
+use zcash_client_backend::encoding::{decode_payment_address, decode_transparent_address};
+use zcash_primitives::legacy::TransparentAddress;
+
+use zcash_client_backend::constants::testnet::{
+    B58_PUBKEY_ADDRESS_PREFIX, B58_SCRIPT_ADDRESS_PREFIX, HRP_SAPLING_PAYMENT_ADDRESS,
+};
+
+/// An address that funds can be sent to.
+pub enum RecipientAddress {
+    Shielded(PaymentAddress<Bls12>),
+    Transparent(TransparentAddress),
+}
+
+impl From<PaymentAddress<Bls12>> for RecipientAddress {
+    fn from(addr: PaymentAddress<Bls12>) -> Self {
+        RecipientAddress::Shielded(addr)
+    }
+}
+
+impl From<TransparentAddress> for RecipientAddress {
+    fn from(addr: TransparentAddress) -> Self {
+        RecipientAddress::Transparent(addr)
+    }
+}
+
+impl RecipientAddress {
+    pub fn from_str(s: &str) -> Option<Self> {
+        if let Some(pa) = match decode_payment_address(HRP_SAPLING_PAYMENT_ADDRESS, s) {
+            Ok(ret) => ret,
+            Err(e) => {
+                eprintln!("{}", e);
+                return None;
+            }
+        } {
+            Some(RecipientAddress::Shielded(pa))
+        } else if let Some(addr) = match decode_transparent_address(
+            &B58_PUBKEY_ADDRESS_PREFIX,
+            &B58_SCRIPT_ADDRESS_PREFIX,
+            s,
+        ) {
+            Ok(ret) => ret,
+            Err(e) => {
+                eprintln!("{}", e);
+                return None;
+            }
+        } {
+            Some(RecipientAddress::Transparent(addr))
+        } else {
+            None
+        }
+    }
+}