chore: Apply Clippy lints single_match and redundant_pattern_matching

stackslib/src/burnchains/bitcoin/indexer.rs

@@ -264,41 +264,32 @@
         match net::TcpStream::connect((self.config.peer_host.as_str(), self.config.peer_port)) {
             Ok(s) => {
                 // Disable Nagle algorithm
-                s.set_nodelay(true).map_err(|_e| {
-                    test_debug!("Failed to set TCP_NODELAY: {:?}", &_e);
+                s.set_nodelay(true).map_err(|e| {
+                    test_debug!("Failed to set TCP_NODELAY: {e:?}");
                     btc_error::ConnectionError
                 })?;
 
                 // set timeout
                 s.set_read_timeout(Some(Duration::from_secs(self.runtime.timeout)))
-                    .map_err(|_e| {
-                        test_debug!("Failed to set TCP read timeout: {:?}", &_e);
+                    .map_err(|e| {
+                        test_debug!("Failed to set TCP read timeout: {e:?}");
                         btc_error::ConnectionError
                     })?;
 
                 s.set_write_timeout(Some(Duration::from_secs(self.runtime.timeout)))
-                    .map_err(|_e| {
-                        test_debug!("Failed to set TCP write timeout: {:?}", &_e);
+                    .map_err(|e| {
+                        test_debug!("Failed to set TCP write timeout: {e:?}");
                         btc_error::ConnectionError
                     })?;
 
-                match self.runtime.sock.take() {
-                    Some(s) => {
-                        let _ = s.shutdown(Shutdown::Both);
-                    }
-                    None => {}
+                if let Some(s_old) = self.runtime.sock.replace(s) {
+                    let _ = s_old.shutdown(Shutdown::Both);
                 }
-
-                self.runtime.sock = Some(s);
                 Ok(())
             }
             Err(_e) => {
-                let s = self.runtime.sock.take();
-                match s {
-                    Some(s) => {
-                        let _ = s.shutdown(Shutdown::Both);
-                    }
-                    None => {}
+                if let Some(s) = self.runtime.sock.take() {
+                    let _ = s.shutdown(Shutdown::Both);
                 }
                 Err(btc_error::ConnectionError)
             }
@@ -932,11 +923,8 @@
 
 impl Drop for BitcoinIndexer {
     fn drop(&mut self) {
-        match self.runtime.sock {
-            Some(ref mut s) => {
-                let _ = s.shutdown(Shutdown::Both);
-            }
-            None => {}
+        if let Some(ref mut s) = self.runtime.sock {
+            let _ = s.shutdown(Shutdown::Both);
         }
     }
 }

stackslib/src/burnchains/db.rs

@@ -1193,9 +1193,10 @@ impl BurnchainDB {
         let ops: Vec<BlockstackOperationType> =
             query_rows(&self.conn, qry, args).expect("FATAL: burnchain DB query error");
         for op in ops {
-            if let Some(_) = indexer
+            if indexer
                 .find_burnchain_header_height(&op.burn_header_hash())
                 .expect("FATAL: burnchain DB query error")
+                .is_some()
             {
                 // this is the op on the canonical fork
                 return Some(op);

stackslib/src/burnchains/tests/mod.rs

@@ -579,13 +579,10 @@ impl TestBurnchainBlock {
     pub fn patch_from_chain_tip(&mut self, parent_snapshot: &BlockSnapshot) {
         assert_eq!(parent_snapshot.block_height + 1, self.block_height);
 
-        for i in 0..self.txs.len() {
-            match self.txs[i] {
-                BlockstackOperationType::LeaderKeyRegister(ref mut data) => {
-                    assert_eq!(data.block_height, self.block_height);
-                    data.consensus_hash = parent_snapshot.consensus_hash.clone();
-                }
-                _ => {}
+        for tx in self.txs.iter_mut() {
+            if let BlockstackOperationType::LeaderKeyRegister(ref mut data) = tx {
+                assert_eq!(data.block_height, self.block_height);
+                data.consensus_hash = parent_snapshot.consensus_hash.clone();
             }
         }
     }

stackslib/src/chainstate/nakamoto/mod.rs

@@ -2476,7 +2476,7 @@ impl NakamotoChainState {
     ) -> Result<bool, ChainstateError> {
         test_debug!("Consider Nakamoto block {}", &block.block_id());
         // do nothing if we already have this block
-        if let Some(_) = Self::get_block_header(headers_conn, &block.header.block_id())? {
+        if Self::get_block_header(headers_conn, &block.header.block_id())?.is_some() {
             debug!("Already have block {}", &block.header.block_id());
             return Ok(false);
         }

stackslib/src/chainstate/stacks/block.rs

@@ -353,16 +353,13 @@ impl StacksMessageCodec for StacksBlock {
         // must be only one coinbase
         let mut coinbase_count = 0;
         for tx in txs.iter() {
-            match tx.payload {
-                TransactionPayload::Coinbase(..) => {
-                    coinbase_count += 1;
-                    if coinbase_count > 1 {
-                        return Err(codec_error::DeserializeError(
-                            "Invalid block: multiple coinbases found".to_string(),
-                        ));
-                    }
+            if let TransactionPayload::Coinbase(..) = tx.payload {
+                coinbase_count += 1;
+                if coinbase_count > 1 {
+                    return Err(codec_error::DeserializeError(
+                        "Invalid block: multiple coinbases found".to_string(),
+                    ));
                 }
-                _ => {}
             }
         }
 
@@ -515,26 +512,23 @@ impl StacksBlock {
         let mut found_coinbase = false;
         let mut coinbase_index = 0;
         for (i, tx) in txs.iter().enumerate() {
-            match tx.payload {
-                TransactionPayload::Coinbase(..) => {
-                    if !check_present {
-                        warn!("Found unexpected coinbase tx {}", tx.txid());
-                        return false;
-                    }
-
-                    if found_coinbase {
-                        warn!("Found duplicate coinbase tx {}", tx.txid());
-                        return false;
-                    }
-
-                    if tx.anchor_mode != TransactionAnchorMode::OnChainOnly {
-                        warn!("Invalid coinbase tx {}: not on-chain only", tx.txid());
-                        return false;
-                    }
-                    found_coinbase = true;
-                    coinbase_index = i;
+            if let TransactionPayload::Coinbase(..) = tx.payload {
+                if !check_present {
+                    warn!("Found unexpected coinbase tx {}", tx.txid());
+                    return false;
+                }
+
+                if found_coinbase {
+                    warn!("Found duplicate coinbase tx {}", tx.txid());
+                    return false;
                 }
-                _ => {}
+
+                if tx.anchor_mode != TransactionAnchorMode::OnChainOnly {
+                    warn!("Invalid coinbase tx {}: not on-chain only", tx.txid());
+                    return false;
+                }
+                found_coinbase = true;
+                coinbase_index = i;
             }
         }
 
@@ -1141,11 +1135,8 @@ mod test {
         let mut txs_anchored = vec![];
 
         for tx in all_txs.iter() {
-            match tx.payload {
-                TransactionPayload::Coinbase(..) => {
-                    continue;
-                }
-                _ => {}
+            if let TransactionPayload::Coinbase(..) = tx.payload {
+                continue;
             }
             txs_anchored.push(tx);
         }

stackslib/src/chainstate/stacks/boot/contract_tests.rs

@@ -486,7 +486,7 @@ impl BurnStateDB for TestSimBurnStateDB {
         height: u32,
         sortition_id: &SortitionId,
     ) -> Option<(Vec<TupleData>, u128)> {
-        if let Some(_) = self.get_burn_header_hash(height, sortition_id) {
+        if self.get_burn_header_hash(height, sortition_id).is_some() {
             let first_block = self.get_burn_start_height();
             let prepare_len = self.get_pox_prepare_length();
             let rc_len = self.get_pox_reward_cycle_length();

stackslib/src/chainstate/stacks/boot/pox_2_tests.rs

@@ -1371,23 +1371,20 @@ fn test_simple_pox_2_auto_unlock(alice_first: bool) {
                 coinbase_txs.push(r);
                 continue;
             }
-            match r.transaction {
-                TransactionOrigin::Stacks(ref t) => {
-                    let addr = t.auth.origin().address_testnet();
-                    eprintln!("TX addr: {}", addr);
-                    if addr == alice_address {
-                        alice_txs.insert(t.auth.get_origin_nonce(), r);
-                    } else if addr == bob_address {
-                        bob_txs.insert(t.auth.get_origin_nonce(), r);
-                    } else if addr == charlie_address {
-                        assert!(
-                            r.execution_cost != ExecutionCost::ZERO,
-                            "Execution cost is not zero!"
-                        );
-                        charlie_txs.insert(t.auth.get_origin_nonce(), r);
-                    }
+            if let TransactionOrigin::Stacks(ref t) = r.transaction {
+                let addr = t.auth.origin().address_testnet();
+                eprintln!("TX addr: {}", addr);
+                if addr == alice_address {
+                    alice_txs.insert(t.auth.get_origin_nonce(), r);
+                } else if addr == bob_address {
+                    bob_txs.insert(t.auth.get_origin_nonce(), r);
+                } else if addr == charlie_address {
+                    assert!(
+                        r.execution_cost != ExecutionCost::ZERO,
+                        "Execution cost is not zero!"
+                    );
+                    charlie_txs.insert(t.auth.get_origin_nonce(), r);
                 }
-                _ => {}
             }
         }
     }

stackslib/src/chainstate/stacks/boot/pox_3_tests.rs

@@ -930,16 +930,13 @@ fn pox_auto_unlock(alice_first: bool) {
                 coinbase_txs.push(r);
                 continue;
             }
-            match r.transaction {
-                TransactionOrigin::Stacks(ref t) => {
-                    let addr = t.auth.origin().address_testnet();
-                    if addr == alice_address {
-                        alice_txs.insert(t.auth.get_origin_nonce(), r);
-                    } else if addr == bob_address {
-                        bob_txs.insert(t.auth.get_origin_nonce(), r);
-                    }
+            if let TransactionOrigin::Stacks(ref t) = r.transaction {
+                let addr = t.auth.origin().address_testnet();
+                if addr == alice_address {
+                    alice_txs.insert(t.auth.get_origin_nonce(), r);
+                } else if addr == bob_address {
+                    bob_txs.insert(t.auth.get_origin_nonce(), r);
                 }
-                _ => {}
             }
         }
     }

stackslib/src/chainstate/stacks/boot/pox_4_tests.rs

@@ -9566,16 +9566,13 @@ fn missed_slots_no_unlock() {
                 coinbase_txs.push(r);
                 continue;
             }
-            match r.transaction {
-                TransactionOrigin::Stacks(ref t) => {
-                    let addr = t.auth.origin().address_testnet();
-                    if addr == alice_address {
-                        alice_txs.insert(t.auth.get_origin_nonce(), r);
-                    } else if addr == bob_address {
-                        bob_txs.insert(t.auth.get_origin_nonce(), r);
-                    }
+            if let TransactionOrigin::Stacks(ref t) = r.transaction {
+                let addr = t.auth.origin().address_testnet();
+                if addr == alice_address {
+                    alice_txs.insert(t.auth.get_origin_nonce(), r);
+                } else if addr == bob_address {
+                    bob_txs.insert(t.auth.get_origin_nonce(), r);
                 }
-                _ => {}
             }
         }
     }

stackslib/src/chainstate/stacks/db/blocks.rs

@@ -5142,7 +5142,7 @@ impl StacksChainState {
         ) {
             Ok(miner_rewards_opt) => miner_rewards_opt,
             Err(e) => {
-                if let Some(_) = miner_id_opt {
+                if miner_id_opt.is_some() {
                     return Err(e);
                 } else {
                     let msg = format!("Failed to load miner rewards: {:?}", &e);
@@ -11201,15 +11201,12 @@ pub mod test {
 
             let (_, burn_header_hash, consensus_hash) = peer.next_burnchain_block(burn_ops.clone());
 
-            match (stacks_block_opt, microblocks_opt) {
-                (Some(stacks_block), Some(microblocks)) => {
-                    peer.process_stacks_epoch_at_tip(&stacks_block, &microblocks);
-                    last_block_id = StacksBlockHeader::make_index_block_hash(
-                        &consensus_hash,
-                        &stacks_block.block_hash(),
-                    );
-                }
-                _ => {}
+            if let (Some(stacks_block), Some(microblocks)) = (stacks_block_opt, microblocks_opt) {
+                peer.process_stacks_epoch_at_tip(&stacks_block, &microblocks);
+                last_block_id = StacksBlockHeader::make_index_block_hash(
+                    &consensus_hash,
+                    &stacks_block.block_hash(),
+                );
             }
 
             let tip =
@@ -11884,15 +11881,12 @@ pub mod test {
 
             let (_, burn_header_hash, consensus_hash) = peer.next_burnchain_block(burn_ops.clone());
 
-            match (stacks_block_opt, microblocks_opt) {
-                (Some(stacks_block), Some(microblocks)) => {
-                    peer.process_stacks_epoch_at_tip(&stacks_block, &microblocks);
-                    last_block_id = StacksBlockHeader::make_index_block_hash(
-                        &consensus_hash,
-                        &stacks_block.block_hash(),
-                    );
-                }
-                _ => {}
+            if let (Some(stacks_block), Some(microblocks)) = (stacks_block_opt, microblocks_opt) {
+                peer.process_stacks_epoch_at_tip(&stacks_block, &microblocks);
+                last_block_id = StacksBlockHeader::make_index_block_hash(
+                    &consensus_hash,
+                    &stacks_block.block_hash(),
+                );
             }
 
             let tip =

stackslib/src/chainstate/stacks/db/mod.rs

@@ -1844,10 +1844,7 @@ impl StacksChainState {
         let nakamoto_staging_blocks_conn =
             StacksChainState::open_nakamoto_staging_blocks(&nakamoto_staging_blocks_path, true)?;
 
-        let init_required = match fs::metadata(&clarity_state_index_marf) {
-            Ok(_) => false,
-            Err(_) => true,
-        };
+        let init_required = fs::metadata(&clarity_state_index_marf).is_err();
 
         let state_index = StacksChainState::open_db(mainnet, chain_id, &header_index_root)?;
 
@@ -2754,11 +2751,8 @@ pub mod test {
         balances: Vec<(StacksAddress, u64)>,
     ) -> StacksChainState {
         let path = chainstate_path(test_name);
-        match fs::metadata(&path) {
-            Ok(_) => {
-                fs::remove_dir_all(&path).unwrap();
-            }
-            Err(_) => {}
+        if fs::metadata(&path).is_ok() {
+            fs::remove_dir_all(&path).unwrap();
         };
 
         let initial_balances = balances
@@ -2874,11 +2868,8 @@ pub mod test {
         };
 
         let path = chainstate_path(function_name!());
-        match fs::metadata(&path) {
-            Ok(_) => {
-                fs::remove_dir_all(&path).unwrap();
-            }
-            Err(_) => {}
+        if fs::metadata(&path).is_ok() {
+            fs::remove_dir_all(&path).unwrap();
         };
 
         let mut chainstate =
@@ -2964,11 +2955,8 @@ pub mod test {
         };
 
         let path = chainstate_path(function_name!());
-        match fs::metadata(&path) {
-            Ok(_) => {
-                fs::remove_dir_all(&path).unwrap();
-            }
-            Err(_) => {}
+        if fs::metadata(&path).is_ok() {
+            fs::remove_dir_all(&path).unwrap();
         };
 
         let mut chainstate =