Merge branch 'tiago/fix-ethbridge-vp' (#1855)

* origin/tiago/fix-ethbridge-vp:
  Changelog for #1855
  Allow an arbitrary nr of accounts to transfer to the Eth bridge addr
  Refactor the Ethereum bridge native VP
  Introduce `has_eth_addr_segment()` storage key predicate

.changelog/unreleased/bug-fixes/1855-fix-ethbridge-vp.md

@@ -0,0 +1,2 @@
+- Fix the Ethereum Bridge VP
+  ([\#1855](https://github.com/anoma/namada/pull/1855))

core/src/ledger/eth_bridge/storage/mod.rs

@@ -7,7 +7,7 @@ use super::ADDRESS;
 use crate::ledger::parameters::storage::*;
 use crate::ledger::parameters::ADDRESS as PARAM_ADDRESS;
 use crate::types::address::Address;
-use crate::types::storage::{Key, KeySeg};
+use crate::types::storage::{DbKeySeg, Key, KeySeg};
 use crate::types::token::balance_key;
 
 /// Key prefix for the storage subspace
@@ -26,6 +26,15 @@ pub fn escrow_key(nam_addr: &Address) -> Key {
     balance_key(nam_addr, &ADDRESS)
 }
 
+/// Check if the given `key` contains an Ethereum
+/// bridge address segment.
+#[inline]
+pub fn has_eth_addr_segment(key: &Key) -> bool {
+    key.segments
+        .iter()
+        .any(|s| matches!(s, DbKeySeg::AddressSeg(ADDRESS)))
+}
+
 /// Returns whether a key belongs to this account or not
 pub fn is_eth_bridge_key(nam_addr: &Address, key: &Key) -> bool {
     key == &escrow_key(nam_addr)