XML:n lukeminen

src/main/kotlin/XMLParser.kt

@@ -7,8 +7,7 @@ import javax.xml.stream.XMLInputFactory
 import javax.xml.stream.events.XMLEvent
 
 
-class Character {
-    var literal: String? = null
+class Character(var literal: String = "") : Comparable<Character> {
     var rmgroups: MutableList<RMGroup> = mutableListOf()
 
     fun print() {
@@ -17,6 +16,14 @@ class Character {
             n.print()
         }
     }
+
+    override fun equals(other: Any?): Boolean {
+        if (other is Character) {
+            return this.literal == other.literal
+        }
+        return super.equals(other)
+    }
+    override fun compareTo(other: Character) = this.literal.compareTo(other.literal)
 }
 
 class RMGroup {