A few minor clippy lints

* Fix `unnested_or_patterns`
* Do a few `match_same_arms`, but keep the lint disabled

Author: nyurik

Diff for: Cargo.toml

@@ -65,6 +65,7 @@ ignored_unit_patterns = "allow"
 implicit_hasher = "allow"
 inconsistent_struct_constructor = "allow"
 items_after_statements = "allow"
+match_same_arms = "allow"
 maybe_infinite_iter = "allow"
 missing_errors_doc = "allow"
 missing_panics_doc = "allow"
@@ -73,19 +74,16 @@ must_use_candidate = "allow"
 ptr_as_ptr = "allow"
 redundant_closure_for_method_calls = "allow"
 return_self_not_must_use = "allow"
-#should_panic_without_expect = "allow"
 similar_names = "allow"
 struct_excessive_bools = "allow"
 struct_field_names = "allow"
 unnecessary_wraps = "allow"
-unnested_or_patterns = "allow"
 unreadable_literal = "allow"
 used_underscore_binding = "allow"
 wildcard_imports = "allow"
 
 # TODO
 borrow_as_ptr = "allow"
-match_same_arms = "allow"
 trivially_copy_pass_by_ref = "allow"
 needless_pass_by_value = "allow"
 unused_self = "allow"

Diff for: bindgen-tests/build.rs

@@ -1,6 +1,5 @@
 use std::char;
 use std::env;
-use std::ffi::OsStr;
 use std::fs::{self, File};
 use std::io::Write;
 use std::path::{Path, PathBuf};
@@ -23,23 +22,19 @@ pub fn main() {
     println!("cargo:rerun-if-changed=tests/headers");
 
     for entry in entries {
-        match entry.path().extension().and_then(OsStr::to_str) {
-            Some("h") | Some("hpp") => {
-                let func = entry
-                    .file_name()
-                    .to_str()
-                    .unwrap()
-                    .replace(|c| !char::is_alphanumeric(c), "_")
-                    .replace("__", "_")
-                    .to_lowercase();
-                writeln!(
-                    dst,
-                    "test_header!(header_{func}, {:?});",
-                    entry.path(),
-                )
+        // TODO: file_is_cpp() in bindgen/lib.rs checks for hpp,hxx,hh, and h++ - should this be consistent?
+        if entry.path().extension().map_or(false, |ext| {
+            ext.eq_ignore_ascii_case("h") || ext.eq_ignore_ascii_case("hpp")
+        }) {
+            let func = entry
+                .file_name()
+                .to_str()
+                .unwrap()
+                .replace(|c| !char::is_alphanumeric(c), "_")
+                .replace("__", "_")
+                .to_lowercase();
+            writeln!(dst, "test_header!(header_{func}, {:?});", entry.path())
                 .unwrap();
-            }
-            _ => {}
         }
     }
 

Diff for: bindgen/codegen/mod.rs

@@ -3003,7 +3003,7 @@ impl Method {
             let cc = &ctx.options().codegen_config;
             match self.kind() {
                 MethodKind::Constructor => cc.constructors(),
-                MethodKind::Destructor => cc.destructors(),
+                MethodKind::Destructor |
                 MethodKind::VirtualDestructor { .. } => cc.destructors(),
                 MethodKind::Static |
                 MethodKind::Normal |

Diff for: bindgen/ir/analysis/derive.rs

@@ -524,7 +524,7 @@ impl DeriveTrait {
 
     fn can_derive_fnptr(&self, f: &FunctionSig) -> CanDerive {
         match (self, f.function_pointers_can_derive()) {
-            (DeriveTrait::Copy, _) | (DeriveTrait::Default, _) | (_, true) => {
+            (DeriveTrait::Copy | DeriveTrait::Default, _) | (_, true) => {
                 trace!("    function pointer can derive {self}");
                 CanDerive::Yes
             }
@@ -565,14 +565,17 @@ impl DeriveTrait {
     fn can_derive_simple(&self, kind: &TypeKind) -> CanDerive {
         match (self, kind) {
             // === Default ===
-            (DeriveTrait::Default, TypeKind::Void) |
-            (DeriveTrait::Default, TypeKind::NullPtr) |
-            (DeriveTrait::Default, TypeKind::Enum(..)) |
-            (DeriveTrait::Default, TypeKind::Reference(..)) |
-            (DeriveTrait::Default, TypeKind::TypeParam) |
-            (DeriveTrait::Default, TypeKind::ObjCInterface(..)) |
-            (DeriveTrait::Default, TypeKind::ObjCId) |
-            (DeriveTrait::Default, TypeKind::ObjCSel) => {
+            (
+                DeriveTrait::Default,
+                TypeKind::Void |
+                TypeKind::NullPtr |
+                TypeKind::Enum(..) |
+                TypeKind::Reference(..) |
+                TypeKind::TypeParam |
+                TypeKind::ObjCInterface(..) |
+                TypeKind::ObjCId |
+                TypeKind::ObjCSel,
+            ) => {
                 trace!("    types that always cannot derive Default");
                 CanDerive::No
             }
@@ -582,8 +585,10 @@ impl DeriveTrait {
                 )
             }
             // === Hash ===
-            (DeriveTrait::Hash, TypeKind::Float(..)) |
-            (DeriveTrait::Hash, TypeKind::Complex(..)) => {
+            (
+                DeriveTrait::Hash,
+                TypeKind::Float(..) | TypeKind::Complex(..),
+            ) => {
                 trace!("    float cannot derive Hash");
                 CanDerive::No
             }

Diff for: bindgen/ir/analysis/has_float.rs

@@ -56,7 +56,7 @@ impl HasFloat<'_> {
             EdgeKind::FunctionParameter |
             EdgeKind::InnerType |
             EdgeKind::InnerVar |
-            EdgeKind::Method => false,
+            EdgeKind::Method |
             EdgeKind::Generic => false,
         }
     }

Diff for: bindgen/ir/analysis/has_type_param_in_array.rs

@@ -58,7 +58,7 @@ impl HasTypeParameterInArray<'_> {
             EdgeKind::FunctionParameter |
             EdgeKind::InnerType |
             EdgeKind::InnerVar |
-            EdgeKind::Method => false,
+            EdgeKind::Method |
             EdgeKind::Generic => false,
         }
     }

Diff for: bindgen/ir/function.rs

@@ -290,15 +290,15 @@ pub(crate) struct FunctionSig {
 fn get_abi(cc: CXCallingConv) -> ClangAbi {
     use clang_sys::*;
     match cc {
-        CXCallingConv_Default => ClangAbi::Known(Abi::C),
-        CXCallingConv_C => ClangAbi::Known(Abi::C),
+        CXCallingConv_Default | CXCallingConv_C => ClangAbi::Known(Abi::C),
         CXCallingConv_X86StdCall => ClangAbi::Known(Abi::Stdcall),
         CXCallingConv_X86FastCall => ClangAbi::Known(Abi::Fastcall),
         CXCallingConv_X86ThisCall => ClangAbi::Known(Abi::ThisCall),
-        CXCallingConv_X86VectorCall => ClangAbi::Known(Abi::Vectorcall),
+        CXCallingConv_X86VectorCall | CXCallingConv_AArch64VectorCall => {
+            ClangAbi::Known(Abi::Vectorcall)
+        }
         CXCallingConv_AAPCS => ClangAbi::Known(Abi::Aapcs),
         CXCallingConv_X86_64Win64 => ClangAbi::Known(Abi::Win64),
-        CXCallingConv_AArch64VectorCall => ClangAbi::Known(Abi::Vectorcall),
         other => ClangAbi::Unknown(other),
     }
 }

Diff for: bindgen/ir/int.rs

@@ -99,9 +99,7 @@ impl IntKind {
             SChar | Short | Int | Long | LongLong | I8 | I16 | I32 | I64 |
             I128 => true,
 
-            Char { is_signed } => is_signed,
-
-            Custom { is_signed, .. } => is_signed,
+            Char { is_signed } | Custom { is_signed, .. } => is_signed,
         }
     }
 

Diff for: bindgen/ir/item.rs

@@ -1012,15 +1012,15 @@ impl Item {
                 FunctionKind::Method(MethodKind::Constructor) => {
                     cc.constructors()
                 }
-                FunctionKind::Method(MethodKind::Destructor) |
-                FunctionKind::Method(MethodKind::VirtualDestructor {
-                    ..
-                }) => cc.destructors(),
-                FunctionKind::Method(MethodKind::Static) |
-                FunctionKind::Method(MethodKind::Normal) |
-                FunctionKind::Method(MethodKind::Virtual { .. }) => {
-                    cc.methods()
-                }
+                FunctionKind::Method(
+                    MethodKind::Destructor |
+                    MethodKind::VirtualDestructor { .. },
+                ) => cc.destructors(),
+                FunctionKind::Method(
+                    MethodKind::Static |
+                    MethodKind::Normal |
+                    MethodKind::Virtual { .. },
+                ) => cc.methods(),
             },
         }
     }
@@ -1415,7 +1415,7 @@ impl Item {
             CXCursor_UsingDirective |
             CXCursor_StaticAssert |
             CXCursor_FunctionTemplate => {
-                debug!("Unhandled cursor kind {:?}: {cursor:?}", cursor.kind(),);
+                debug!("Unhandled cursor kind {:?}: {cursor:?}", cursor.kind());
                 Err(ParseError::Continue)
             }