lemmatizer: implement equality for AllomorphPattern/LemmatizationRule

lib/util/lemmatizer/lemmatizer.dart

@@ -1,3 +1,4 @@
+import 'package:collection/collection.dart';
 import 'package:jadb/util/lemmatizer/rules.dart';
 
 enum WordClass {
@@ -10,6 +11,8 @@ enum WordClass {
   adverb,
   particle,
   input,
+
+  // TODO: add toString and fromString so it can be parsed by the cli
 }
 
 enum LemmatizationRuleType { prefix, suffix }
@@ -55,6 +58,27 @@ class LemmatizationRule {
          terminal: terminal,
          wordClass: wordClass,
        );
+
+  @override
+  int get hashCode => Object.hash(
+    name,
+    pattern,
+    wordClass,
+    validChildClasses,
+    terminal,
+    SetEquality().hash(validChildClasses),
+  );
+
+  @override
+  bool operator ==(Object other) {
+    if (identical(this, other)) return true;
+    return other is LemmatizationRule &&
+        other.name == name &&
+        other.pattern == pattern &&
+        other.wordClass == wordClass &&
+        other.terminal == terminal &&
+        SetEquality().equals(validChildClasses, other.validChildClasses);
+  }
 }
 
 /// Represents a set of patterns for matching allomorphs in a word.
@@ -162,6 +186,22 @@ class AllomorphPattern {
     }
     return null;
   }
+
+  @override
+  int get hashCode => Object.hash(
+    type,
+    ListEquality().hash(lookAheadBehind),
+    MapEquality().hash(patterns),
+  );
+
+  @override
+  bool operator ==(Object other) {
+    if (identical(this, other)) return true;
+    return other is AllomorphPattern &&
+        other.type == type &&
+        ListEquality().equals(other.lookAheadBehind, lookAheadBehind) &&
+        MapEquality().equals(other.patterns, patterns);
+  }
 }
 
 class Lemmatized {