Bump clippy msrv to 1.64

the msrv was bumped in in the Cargo.toml #847 but not in clippy.toml,
clippy was complaining at startup and defaulting to 1.57

.clippy.toml

@@ -1,2 +1,2 @@
 # Specify the minimum supported Rust version
-msrv = "1.57.0"
+msrv = "1.64.0"

src/bindgen/config.rs

@@ -61,8 +61,10 @@ impl Language {
 /// Controls what type of line endings are used in the generated code.
 #[derive(Debug, Clone, Copy)]
 #[allow(clippy::upper_case_acronyms)]
+#[derive(Default)]
 pub enum LineEndingStyle {
  /// Use Unix-style linefeed characters
+ #[default]
  LF,
  /// Use classic Mac-style carriage-return characters
  CR,
@@ -72,11 +74,7 @@ pub enum LineEndingStyle {
  Native,
 }
 
-impl Default for LineEndingStyle {
- fn default() -> Self {
- LineEndingStyle::LF
- }
-}
+
 
 impl LineEndingStyle {
  pub fn as_str(&self) -> &'static str {
@@ -214,7 +212,9 @@ deserialize_enum_str!(DocumentationLength);
 
 /// A style of Style to use when generating structs and enums.
 #[derive(Debug, Copy, Clone, PartialEq, Eq)]
+#[derive(Default)]
 pub enum Style {
+ #[default]
  Both,
  Tag,
  Type,
@@ -245,11 +245,7 @@ impl Style {
  }
 }
 
-impl Default for Style {
- fn default() -> Self {
- Style::Both
- }
-}
+
 
 impl FromStr for Style {
  type Err = String;

src/bindgen/ir/repr.rs

@@ -7,17 +7,15 @@ use syn::ext::IdentExt;
 use crate::bindgen::ir::ty::{IntKind, PrimitiveType};
 
 #[derive(Debug, Copy, Clone, PartialEq, Eq)]
+#[derive(Default)]
 pub enum ReprStyle {
+ #[default]
  Rust,
  C,
  Transparent,
 }
 
-impl Default for ReprStyle {
- fn default() -> Self {
- ReprStyle::Rust
- }
-}
+
 
 #[derive(Debug, Copy, Clone, PartialEq, Eq)]
 pub struct ReprType {

src/bindgen/rename.rs

@@ -29,8 +29,10 @@ impl<'a> IdentifierType<'a> {
 
 /// A rule to apply to an identifier when generating bindings.
 #[derive(Debug, Clone, Copy)]
+#[derive(Default)]
 pub enum RenameRule {
  /// Do not apply any renaming. The default.
+ #[default]
  None,
  /// Converts the identifier to PascalCase and adds a context dependent prefix
  GeckoCase,
@@ -93,11 +95,7 @@ impl RenameRule {
  }
 }
 
-impl Default for RenameRule {
- fn default() -> RenameRule {
- RenameRule::None
- }
-}
+
 
 impl FromStr for RenameRule {
  type Err = String;

tests/depfile.rs

@@ -93,7 +93,7 @@ fn test_project(project_path: &str) {
  );
 
  std::fs::remove_dir_all(build_dir).expect("Failed to remove old build directory");
- ()
+
 }
 
 macro_rules! test_file {

tests/tests.rs

@@ -251,7 +251,7 @@ fn run_compile_test(
  );
  if generate_depfile {
  let depfile = depfile_contents.expect("No depfile generated");
- assert!(depfile.len() > 0);
+ assert!(!depfile.is_empty());
  let mut rules = depfile.split(':');
  let target = rules.next().expect("No target found");
  assert_eq!(target, generated_file.as_os_str().to_str().unwrap());