Support not in and is not compound operators

CHANGELOG.md

@@ -7,6 +7,10 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 
 ## [Unreleased]
 
+### Added
+
+- Added support for `not in` and `is not` compound operators.
+
 ## [0.7.0] - 2025-11-11
 
 ### Added

core/CHANGELOG.md

@@ -7,6 +7,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## Unreleased
 
+### Added
+
+- Added support for `not in` and `is not` compound operators.
+
 ## 0.7.0 - 2025-11-11
 
 ### Added

core/datatests/generators/optimising_line_formatter.rs

@@ -361,6 +361,7 @@ mod comments {
         child_lines::generate(root_dir);
         conditional_directives::generate(root_dir);
         individual_block::generate(root_dir);
+        compound_operators::generate(root_dir);
     }
 
     mod midline_line {
@@ -680,6 +681,44 @@ mod comments {
             );
         }
     }
+
+    mod compound_operators {
+        use super::*;
+
+        pub fn generate(root_dir: &Path) {
+            generate_test_cases!(
+                root_dir,
+                not_in = "
+                    AA := AAA {} not {} in {} BBB;
+                    AAA :=
+                        AAA {} not {} in {} BBB;
+                    AAA :=
+                        AAAAA {}
+                            not {} in {} BBBB;
+                    AAA :=
+                        AAAAA {}
+                            not {} in {} BBBBBBBBB;
+                    AAA :=
+                        AAAAA
+                            {}
+                            not
+                            {} in
+                            {} BBBBBBBBB;
+                    AAA :=
+                        AAAAA
+                            {
+                            }
+                            not
+                            {
+                            }
+                            in
+                            {
+                            }
+                            BBBBBBBBB;
+                ",
+            );
+        }
+    }
 }
 
 mod anonymous {
@@ -4312,6 +4351,51 @@ mod expressions {
                             and DDDDDDD;
 
                 ",
+                compound = "
+                    A := AAAAAAAA not in BBBBBBBB;
+                    A :=
+                        AAAAAAAA not in BBBBBBBBB;
+                    A :=
+                        AAAAAAAAA
+                            not in BBBBBBBBB;
+                    A :=
+                        AAAAAAAAA
+                            not in BBBBBBBBBBBBBBB;
+                    A :=
+                        AAAAAA + BBBBBB + CCCCCCCC
+                            not in DDDDDDDDDDDDDD;
+                    A :=
+                        AAAAAA + BBBBBB + CCCCCCCC
+                            not in DDDDD + EEEEEE;
+                    A :=
+                        AAAAAAA
+                                + BBBBBBB
+                                + CCCCCCC
+                            not in DDDDDDDDDDDDDD;
+                    A :=
+                        AAAAAA + BBBBBB + CCCCCCCC
+                            not in DDDDDD
+                                + EEEEEE;
+                    A := AAAAAAAA is not BBBBBBBB;
+                    A :=
+                        AAAAAAAA is not BBBBBBBBB;
+                    A :=
+                        AAAAAAAAA
+                            is not BBBBBBBBB;
+                    A :=
+                        AAAAAAAAA
+                            is not BBBBBBBBBBBBBBB;
+                    A := (AAA not in [DDD + EEE]);
+                    A :=
+                        (AAAA not in [DDD + EEE]);
+                    A :=
+                        (AAAAA
+                            not in [DDD + EEE]);
+                    A :=
+                        (AAAAA
+                            not in [
+                                DDDDD + EEEE]);
+                ",
             );
         }
     }