Replace map_or(false, ..) uses with is_some_and and is_ok_and (#4703)

## Summary

Looks like there isn't a clippy lint for this yet.

crates/requirements-txt/src/lib.rs

@@ -1201,7 +1201,7 @@ fn calculate_row_column(content: &str, position: usize) -> (usize, usize) {
                 // If the next character is a newline, skip it.
                 if chars
                     .peek()
-                    .map_or(false, |&(_, next_char)| next_char == '\n')
+                    .is_some_and(|&(_, next_char)| next_char == '\n')
                 {
                     chars.next();
                 }

crates/uv-client/src/httpcache/control.rs

@@ -216,7 +216,7 @@ impl<'b, B: 'b + ?Sized + AsRef<[u8]>, I: Iterator<Item = &'b B>> CacheControlPa
             )
         }
         let mut end = 0;
-        while self.cur.get(end).copied().map_or(false, is_token_byte) {
+        while self.cur.get(end).copied().is_some_and(is_token_byte) {
             end += 1;
         }
         if end == 0 {
@@ -240,7 +240,7 @@ impl<'b, B: 'b + ?Sized + AsRef<[u8]>, I: Iterator<Item = &'b B>> CacheControlPa
     ///
     /// [RFC 9111 Appendix A]: https://www.rfc-editor.org/rfc/rfc9111.html#name-collected-abnf
     fn maybe_parse_equals(&mut self) -> bool {
-        if self.cur.first().map_or(false, |&byte| byte == b'=') {
+        if self.cur.first().is_some_and(|&byte| byte == b'=') {
             self.cur = &self.cur[1..];
             true
         } else {
@@ -322,7 +322,7 @@ impl<'b, B: 'b + ?Sized + AsRef<[u8]>, I: Iterator<Item = &'b B>> CacheControlPa
     ///
     /// [RFC 9111 Appendix A]: https://www.rfc-editor.org/rfc/rfc9111.html#name-collected-abnf
     fn maybe_parse_directive_delimiter(&mut self) -> bool {
-        if self.cur.first().map_or(false, |&byte| byte == b',') {
+        if self.cur.first().is_some_and(|&byte| byte == b',') {
             self.cur = &self.cur[1..];
             true
         } else {
@@ -336,7 +336,7 @@ impl<'b, B: 'b + ?Sized + AsRef<[u8]>, I: Iterator<Item = &'b B>> CacheControlPa
     ///
     /// [RFC 9111 Appendix A]: https://www.rfc-editor.org/rfc/rfc9111.html#name-collected-abnf
     fn skip_whitespace(&mut self) {
-        while self.cur.first().map_or(false, u8::is_ascii_whitespace) {
+        while self.cur.first().is_some_and(u8::is_ascii_whitespace) {
             self.cur = &self.cur[1..];
         }
     }

crates/uv-fs/src/lib.rs

@@ -201,11 +201,7 @@ pub fn directories(path: impl AsRef<Path>) -> impl Iterator<Item = PathBuf> {
                 None
             }
         })
-        .filter(|entry| {
+        .filter(|entry| entry.file_type().is_ok_and(|file_type| file_type.is_dir()))
-            entry
-                .file_type()
-                .map_or(false, |file_type| file_type.is_dir())
-        })
         .map(|entry| entry.path())
 }
 
@@ -228,7 +224,7 @@ pub fn symlinks(path: impl AsRef<Path>) -> impl Iterator<Item = PathBuf> {
         .filter(|entry| {
             entry
                 .file_type()
-                .map_or(false, |file_type| file_type.is_symlink())
+                .is_ok_and(|file_type| file_type.is_symlink())
         })
         .map(|entry| entry.path())
 }
@@ -249,11 +245,7 @@ pub fn files(path: impl AsRef<Path>) -> impl Iterator<Item = PathBuf> {
                 None
             }
         })
-        .filter(|entry| {
+        .filter(|entry| entry.file_type().is_ok_and(|file_type| file_type.is_file()))
-            entry
-                .file_type()
-                .map_or(false, |file_type| file_type.is_file())
-        })
         .map(|entry| entry.path())
 }
 

crates/uv-installer/src/site_packages.rs

@@ -52,9 +52,10 @@ impl SitePackages {
                         .filter_map(|read_dir| match read_dir {
                             Ok(entry) => match entry.file_type() {
                                 Ok(file_type) => (file_type.is_dir()
-                                    || entry.path().extension().map_or(false, |ext| {
+                                    || entry
-                                        ext == "egg-link" || ext == "egg-info"
+                                        .path()
-                                    }))
+                                        .extension()
+                                        .is_some_and(|ext| ext == "egg-link" || ext == "egg-info"))
                                 .then_some(Ok(entry.path())),
                                 Err(err) => Some(Err(err)),
                             },

crates/uv-toolchain/src/managed.rs

@@ -263,7 +263,7 @@ impl InstalledToolchain {
             ToolchainRequest::ExecutableName(name) => self
                 .executable()
                 .file_name()
-                .map_or(false, |filename| filename.to_string_lossy() == *name),
+                .is_some_and(|filename| filename.to_string_lossy() == *name),
             ToolchainRequest::Implementation(implementation) => {
                 implementation == self.implementation()
             }

crates/uv/src/commands/project/run.rs

@@ -425,7 +425,7 @@ impl From<ExternalCommand> for RunCommand {
         let target_path = PathBuf::from(&target);
         if target_path
             .extension()
-            .map_or(false, |ext| ext.eq_ignore_ascii_case("py"))
+            .is_some_and(|ext| ext.eq_ignore_ascii_case("py"))
             && target_path.exists()
         {
             Self::Python(target_path, args.to_vec())