chore: fix clippy (#2059)

ethers-contract/ethers-contract-abigen/src/filter.rs

@@ -4,9 +4,10 @@ use regex::Regex;
 use std::collections::HashSet;
 
 /// Used to filter contracts that should be _included_ in the abigen generation.
-#[derive(Debug, Clone)]
+#[derive(Debug, Default, Clone)]
 pub enum ContractFilter {
     /// Include all contracts
+    #[default]
     All,
     /// Only include contracts that match the filter
     Select(SelectContracts),
@@ -27,12 +28,6 @@ impl ContractFilter {
     }
 }
 
-impl Default for ContractFilter {
-    fn default() -> Self {
-        ContractFilter::All
-    }
-}
-
 impl From<SelectContracts> for ContractFilter {
     fn from(f: SelectContracts) -> Self {
         ContractFilter::Select(f)

ethers-contract/ethers-contract-abigen/src/lib.rs

@@ -152,7 +152,6 @@ impl Abigen {
         self
     }
 
-    #[must_use]
     #[deprecated = "Use format instead"]
     #[doc(hidden)]
     pub fn rustfmt(mut self, rustfmt: bool) -> Self {

ethers-contract/src/multicall/mod.rs

@@ -282,7 +282,7 @@ impl<M> Clone for Multicall<M> {
             contract: self.contract.clone(),
             version: self.version,
             legacy: self.legacy,
-            block: self.block.clone(),
+            block: self.block,
             calls: self.calls.clone(),
         }
     }

ethers-etherscan/src/account.rs

@@ -355,10 +355,11 @@ pub struct MinedBlock {
 }
 
 /// The pre-defined block parameter for balance API endpoints
-#[derive(Clone, Copy, Debug)]
+#[derive(Clone, Copy, Debug, Default)]
 pub enum Tag {
     Earliest,
     Pending,
+    #[default]
     Latest,
 }
 
@@ -372,12 +373,6 @@ impl Display for Tag {
     }
 }
 
-impl Default for Tag {
-    fn default() -> Self {
-        Tag::Latest
-    }
-}
-
 /// The list sorting preference
 #[derive(Clone, Copy, Debug)]
 pub enum Sort {
@@ -466,8 +461,9 @@ impl TokenQueryOption {
 }
 
 /// The pre-defined block type for retrieving mined blocks
-#[derive(Copy, Clone, Debug)]
+#[derive(Copy, Clone, Debug, Default)]
 pub enum BlockType {
+    #[default]
     CanonicalBlocks,
     Uncles,
 }
@@ -481,12 +477,6 @@ impl Display for BlockType {
     }
 }
 
-impl Default for BlockType {
-    fn default() -> Self {
-        BlockType::CanonicalBlocks
-    }
-}
-
 impl Client {
     /// Returns the Ether balance of a given address.
     ///

ethers-providers/src/transports/quorum.rs

@@ -214,12 +214,13 @@ impl<T: JsonRpcClientWrapper> QuorumProvider<T> {
 }
 
 /// Determines when the provider reached a quorum
-#[derive(Debug, Copy, Clone)]
+#[derive(Debug, Default, Copy, Clone)]
 pub enum Quorum {
     ///  The quorum is reached when all providers return the exact value
     All,
     /// The quorum is reached when the majority of the providers have returned a
     /// matching value, taking into account their weight.
+    #[default]
     Majority,
     /// The quorum is reached when the cumulative weight of a matching return
     /// exceeds the given percentage of the total weight.
@@ -257,12 +258,6 @@ impl Quorum {
     }
 }
 
-impl Default for Quorum {
-    fn default() -> Self {
-        Quorum::Majority
-    }
-}
-
 // A future that returns the provider's response and it's index within the
 // `QuorumProvider` provider set
 #[cfg(target_arch = "wasm32")]

ethers-solc/src/artifacts/mod.rs

@@ -677,7 +677,7 @@ pub struct YulDetails {
     pub optimizer_steps: Option<String>,
 }
 
-#[derive(Copy, Clone, Debug, PartialEq, Eq, PartialOrd, Ord, Serialize, Deserialize)]
+#[derive(Copy, Clone, Debug, Default, PartialEq, Eq, PartialOrd, Ord, Serialize, Deserialize)]
 pub enum EvmVersion {
     Homestead,
     TangerineWhistle,
@@ -687,15 +687,10 @@ pub enum EvmVersion {
     Petersburg,
     Istanbul,
     Berlin,
+    #[default]
     London,
 }
 
-impl Default for EvmVersion {
-    fn default() -> Self {
-        Self::London
-    }
-}
-
 impl EvmVersion {
     /// Checks against the given solidity `semver::Version`
     pub fn normalize_version(self, version: &Version) -> Option<EvmVersion> {
@@ -786,9 +781,10 @@ pub struct DebuggingSettings {
 }
 
 /// How to treat revert (and require) reason strings.
-#[derive(Copy, Clone, Debug, PartialEq, Eq, PartialOrd, Ord, Serialize, Deserialize)]
+#[derive(Copy, Clone, Debug, Default, PartialEq, Eq, PartialOrd, Ord, Serialize, Deserialize)]
 pub enum RevertStrings {
     /// "default" does not inject compiler-generated revert strings and keeps user-supplied ones.
+    #[default]
     Default,
     /// "strip" removes all revert strings (if possible, i.e. if literals are used) keeping
     /// side-effects
@@ -827,12 +823,6 @@ impl FromStr for RevertStrings {
     }
 }
 
-impl Default for RevertStrings {
-    fn default() -> Self {
-        RevertStrings::Default
-    }
-}
-
 #[derive(Clone, Debug, PartialEq, Eq, Serialize, Deserialize)]
 pub struct SettingsMetadata {
     /// Use only literal content and not URLs (false by default)
@@ -868,19 +858,14 @@ impl From<BytecodeHash> for SettingsMetadata {
 /// Determines the hash method for the metadata hash that is appended to the bytecode.
 ///
 /// Solc's default is `Ipfs`, see <https://docs.soliditylang.org/en/latest/using-the-compiler.html#compiler-api>.
-#[derive(Clone, Debug, Copy, PartialEq, Eq, Serialize, Deserialize)]
+#[derive(Clone, Debug, Default, Copy, PartialEq, Eq, Serialize, Deserialize)]
 pub enum BytecodeHash {
+    #[default]
     Ipfs,
     None,
     Bzzr1,
 }
 
-impl Default for BytecodeHash {
-    fn default() -> Self {
-        BytecodeHash::Ipfs
-    }
-}
-
 impl FromStr for BytecodeHash {
     type Err = String;
 
@@ -1036,8 +1021,9 @@ pub struct ModelCheckerSettings {
 }
 
 /// Which model checker engine to run.
-#[derive(Clone, Debug, PartialEq, Eq, Serialize, Deserialize)]
+#[derive(Clone, Debug, Default, PartialEq, Eq, Serialize, Deserialize)]
 pub enum ModelCheckerEngine {
+    #[default]
     Default,
     All,
     BMC,
@@ -1070,12 +1056,6 @@ impl FromStr for ModelCheckerEngine {
     }
 }
 
-impl Default for ModelCheckerEngine {
-    fn default() -> Self {
-        ModelCheckerEngine::Default
-    }
-}
-
 /// Which model checker targets to check.
 #[derive(Clone, Debug, PartialEq, Eq, Serialize, Deserialize)]
 #[serde(rename_all = "camelCase")]

ethers-solc/src/filter.rs

@@ -53,11 +53,13 @@ impl FileFilter for TestFileFilter {
 
 /// A type that can apply a filter to a set of preprocessed [FilteredSources] in order to set sparse
 /// output for specific files
+#[derive(Default)]
 pub enum SparseOutputFilter {
     /// Sets the configured [OutputSelection] for dirty files only.
     ///
     /// In other words, we request the output of solc only for files that have been detected as
     /// _dirty_.
+    #[default]
     AllDirty,
     /// Apply an additional filter to [FilteredSources] to
     Custom(Box<dyn FileFilter>),
@@ -176,12 +178,6 @@ impl From<Box<dyn FileFilter>> for SparseOutputFilter {
     }
 }
 
-impl Default for SparseOutputFilter {
-    fn default() -> Self {
-        SparseOutputFilter::AllDirty
-    }
-}
-
 impl fmt::Debug for SparseOutputFilter {
     fn fmt(&self, f: &mut Formatter<'_>) -> fmt::Result {
         match self {

ethers-solc/src/resolver/tree.rs

@@ -1,23 +1,14 @@
 use crate::Graph;
 use std::{collections::HashSet, io, io::Write, str::FromStr};
 
-#[derive(Debug, Clone, Copy, Eq, PartialEq)]
+#[derive(Debug, Default, Clone, Copy, Eq, PartialEq)]
 pub enum Charset {
-    Utf8,
-    Ascii,
-}
-
-impl Default for Charset {
-    fn default() -> Self {
     // when operating in a console on windows non-UTF-8 byte sequences are not supported on
     // stdout, See also [`StdoutLock`]
-        #[cfg(target_os = "windows")]
+    #[cfg_attr(target_os = "windows", default)]
-        {
+    Utf8,
-            Charset::Ascii
+    #[cfg_attr(not(target_os = "windows"), default)]
-        }
+    Ascii,
-        #[cfg(not(target_os = "windows"))]
-        Charset::Utf8
-    }
 }
 
 impl FromStr for Charset {