Fix clippy warnings

libsqlite3-sys/build.rs

@@ -85,10 +85,9 @@ mod build_bundled {
     pub fn main(out_dir: &str, out_path: &Path) {
         let lib_name = super::lib_name();
 
-        if cfg!(feature = "bundled-windows") && !cfg!(feature = "bundled") && !win_target() {
+        // This is just a sanity check, the top level `main` should ensure this.
-            // This is just a sanity check, the top level `main` should ensure this.
+        assert!(!(cfg!(feature = "bundled-windows") && !cfg!(feature = "bundled") && !win_target()),
-            panic!("This module should not be used: we're not on Windows and the bundled feature has not been enabled");
+            "This module should not be used: we're not on Windows and the bundled feature has not been enabled");
-        }
 
         #[cfg(feature = "buildtime_bindgen")]
         {
@@ -159,12 +158,11 @@ mod build_bundled {
                         let lib_dir = lib_dir.unwrap_or_else(|| openssl_dir.join("lib"));
                         let inc_dir = inc_dir.unwrap_or_else(|| openssl_dir.join("include"));
 
-                        if !Path::new(&lib_dir).exists() {
+                        assert!(
-                            panic!(
+                            Path::new(&lib_dir).exists(),
-                                "OpenSSL library directory does not exist: {}",
+                            "OpenSSL library directory does not exist: {}",
-                                lib_dir.to_string_lossy()
+                            lib_dir.to_string_lossy()
-                            );
+                        );
-                        }
 
                         if !Path::new(&inc_dir).exists() {
                             panic!(
@@ -221,7 +219,8 @@ mod build_bundled {
             cfg.flag("-fsanitize=address");
         }
 
-        // If explicitly requested: enable static linking against the Microsoft Visual C++ Runtime to avoid dependencies on vcruntime140.dll and similar libraries.
+        // If explicitly requested: enable static linking against the Microsoft Visual
+        // C++ Runtime to avoid dependencies on vcruntime140.dll and similar libraries.
         if cfg!(target_feature = "crt-static") && is_compiler("msvc") {
             cfg.static_crt(true);
         }

src/inner_connection.rs

@@ -430,15 +430,13 @@ fn ensure_safe_sqlite_threading_mode() -> Result<()> {
             }
 
             unsafe {
-                if ffi::sqlite3_config(ffi::SQLITE_CONFIG_MULTITHREAD) != ffi::SQLITE_OK || ffi::sqlite3_initialize() != ffi::SQLITE_OK {
+                assert!(ffi::sqlite3_config(ffi::SQLITE_CONFIG_MULTITHREAD) == ffi::SQLITE_OK && ffi::sqlite3_initialize() == ffi::SQLITE_OK,
-                    panic!(
                         "Could not ensure safe initialization of SQLite.\n\
                          To fix this, either:\n\
                          * Upgrade SQLite to at least version 3.7.0\n\
                          * Ensure that SQLite has been initialized in Multi-thread or Serialized mode and call\n\
                            rusqlite::bypass_sqlite_initialization() prior to your first connection attempt."
                     );
-                }
             }
         });
         Ok(())

src/lib.rs

@@ -679,7 +679,7 @@ impl Connection {
         stmt.check_no_tail()?;
         let mut rows = stmt.query(params)?;
 
-        rows.get_expected_row().map_err(E::from).and_then(|r| f(r))
+        rows.get_expected_row().map_err(E::from).and_then(f)
     }
 
     /// Prepare a SQL statement for execution.
@@ -1346,9 +1346,11 @@ mod test {
     fn test_execute_select() {
         let db = checked_memory_handle();
         let err = db.execute("SELECT 1 WHERE 1 < ?", [1i32]).unwrap_err();
-        if err != Error::ExecuteReturnedResults {
+        assert!(
-            panic!("Unexpected error: {}", err);
+            err == Error::ExecuteReturnedResults,
-        }
+            "Unexpected error: {}",
+            err
+        );
     }
 
     #[test]

src/row.rs

@@ -156,7 +156,7 @@ where
         self.rows
             .next()
             .transpose()
-            .map(|row_result| row_result.and_then(|row| (map)(row)))
+            .map(|row_result| row_result.and_then(map))
     }
 }
 
@@ -181,7 +181,7 @@ where
         self.rows
             .next()
             .transpose()
-            .map(|row_result| row_result.map_err(E::from).and_then(|row| (map)(row)))
+            .map(|row_result| row_result.map_err(E::from).and_then(map))
     }
 }
 

src/statement.rs

@@ -453,7 +453,7 @@ impl Statement<'_> {
     {
         let mut rows = self.query(params)?;
 
-        rows.get_expected_row().and_then(|r| f(r))
+        rows.get_expected_row().and_then(f)
     }
 
     /// Convenience method to execute a query with named parameter(s) that is

src/vtab/mod.rs

@@ -431,7 +431,7 @@ impl<'a> Iterator for IndexConstraintIter<'a> {
 
     #[inline]
     fn next(&mut self) -> Option<IndexConstraint<'a>> {
-        self.iter.next().map(|raw| IndexConstraint(raw))
+        self.iter.next().map(IndexConstraint)
     }
 
     #[inline]
@@ -492,7 +492,7 @@ impl<'a> Iterator for OrderByIter<'a> {
 
     #[inline]
     fn next(&mut self) -> Option<OrderBy<'a>> {
-        self.iter.next().map(|raw| OrderBy(raw))
+        self.iter.next().map(OrderBy)
     }
 
     #[inline]