clippy::single_match_else

libsqlite3-sys/build.rs

@@ -429,19 +429,17 @@ mod build_linked {
         }
 
         // See if pkg-config can do everything for us.
-        match pkg_config::Config::new()
+        if let Ok(mut lib) = pkg_config::Config::new()
             .print_system_libs(false)
             .probe(link_lib)
         {
-            Ok(mut lib) => {
             if let Some(mut header) = lib.include_paths.pop() {
                 header.push("sqlite3.h");
                 HeaderLocation::FromPath(header.to_string_lossy().into())
             } else {
                 HeaderLocation::Wrapper
             }
-            }
+        } else {
-            Err(_) => {
             // No env var set and pkg-config couldn't help; just output the link-lib
             // request and hope that the library exists on the system paths. We used to
             // output /usr/lib explicitly, but that can introduce other linking problems;
@@ -450,7 +448,6 @@ mod build_linked {
             HeaderLocation::Wrapper
         }
     }
-    }
 
     fn try_vcpkg() -> Option<HeaderLocation> {
         if cfg!(feature = "vcpkg") && is_compiler("msvc") {

src/functions.rs

@@ -84,21 +84,18 @@ unsafe fn report_error(ctx: *mut sqlite3_context, err: &Error) {
         ffi::SQLITE_CONSTRAINT
     }
 
-    match *err {
+    if let Error::SqliteFailure(ref err, ref s) = *err {
-        Error::SqliteFailure(ref err, ref s) => {
         ffi::sqlite3_result_error_code(ctx, err.extended_code);
         if let Some(Ok(cstr)) = s.as_ref().map(|s| str_to_cstring(s)) {
             ffi::sqlite3_result_error(ctx, cstr.as_ptr(), -1);
         }
-        }
+    } else {
-        _ => {
         ffi::sqlite3_result_error_code(ctx, constraint_error_code());
         if let Ok(cstr) = str_to_cstring(&err.to_string()) {
             ffi::sqlite3_result_error(ctx, cstr.as_ptr(), -1);
         }
     }
 }
-}
 
 unsafe extern "C" fn free_boxed_value<T>(p: *mut c_void) {
     drop(Box::from_raw(p as *mut T));
@@ -203,7 +200,7 @@ impl Context<'_> {
                 arg,
                 raw as *mut _,
                 Some(free_boxed_value::<AuxInner>),
-            )
+            );
         };
         Ok(orig)
     }
@@ -620,12 +617,11 @@ unsafe extern "C" fn call_boxed_step<A, D, T>(
     D: Aggregate<A, T>,
     T: ToSql,
 {
-    let pac = match aggregate_context(ctx, ::std::mem::size_of::<*mut A>()) {
+    let pac = if let Some(pac) = aggregate_context(ctx, ::std::mem::size_of::<*mut A>()) {
-        Some(pac) => pac,
+        pac
-        None => {
+    } else {
         ffi::sqlite3_result_error_nomem(ctx);
         return;
-        }
     };
 
     let r = catch_unwind(|| {
@@ -668,12 +664,11 @@ unsafe extern "C" fn call_boxed_inverse<A, W, T>(
     W: WindowAggregate<A, T>,
     T: ToSql,
 {
-    let pac = match aggregate_context(ctx, ::std::mem::size_of::<*mut A>()) {
+    let pac = if let Some(pac) = aggregate_context(ctx, ::std::mem::size_of::<*mut A>()) {
-        Some(pac) => pac,
+        pac
-        None => {
+    } else {
         ffi::sqlite3_result_error_nomem(ctx);
         return;
-        }
     };
 
     let r = catch_unwind(|| {

src/hooks.rs

@@ -577,8 +577,7 @@ impl InnerConnection {
             }
         }
 
-        match handler {
+        if let Some(handler) = handler {
-            Some(handler) => {
             let boxed_handler = Box::new(handler);
             unsafe {
                 ffi::sqlite3_progress_handler(
@@ -586,14 +585,12 @@ impl InnerConnection {
                     num_ops,
                     Some(call_boxed_closure::<F>),
                     &*boxed_handler as *const F as *mut _,
-                    )
+                );
             }
             self.progress_handler = Some(boxed_handler);
-            }
+        } else {
-            _ => {
             unsafe { ffi::sqlite3_progress_handler(self.db(), num_ops, None, ptr::null_mut()) }
             self.progress_handler = None;
-            }
         };
     }
 

src/row.rs

@@ -210,8 +210,8 @@ impl<'stmt> FallibleStreamingIterator for Rows<'stmt> {
 
     #[inline]
     fn advance(&mut self) -> Result<()> {
-        match self.stmt {
+        if let Some(stmt) = self.stmt {
-            Some(stmt) => match stmt.step() {
+            match stmt.step() {
                 Ok(true) => {
                     self.row = Some(Row { stmt });
                     Ok(())
@@ -226,13 +226,12 @@ impl<'stmt> FallibleStreamingIterator for Rows<'stmt> {
                     self.row = None;
                     Err(e)
                 }
-            },
+            }
-            None => {
+        } else {
             self.row = None;
             Ok(())
         }
     }
-    }
 
     #[inline]
     fn get(&self) -> Option<&Row<'stmt>> {

src/trace.rs

@@ -34,16 +34,15 @@ pub unsafe fn config_log(callback: Option<fn(c_int, &str)>) -> Result<()> {
         drop(catch_unwind(|| callback(err, &s)));
     }
 
-    let rc = match callback {
+    let rc = if let Some(f) = callback {
-        Some(f) => ffi::sqlite3_config(
+        ffi::sqlite3_config(
             ffi::SQLITE_CONFIG_LOG,
             log_callback as extern "C" fn(_, _, _),
             f as *mut c_void,
-        ),
+        )
-        None => {
+    } else {
         let nullptr: *mut c_void = ptr::null_mut();
         ffi::sqlite3_config(ffi::SQLITE_CONFIG_LOG, nullptr, nullptr)
-        }
     };
 
     if rc == ffi::SQLITE_OK {