Rename FinalDelegate to SafeValDelegate

app/src/androidTest/java/org/bspeice/minimalbible/test/SafeValDelegateTest.java

@@ -1,19 +1,19 @@
 package org.bspeice.minimalbible.test;
 
-import org.bspeice.minimalbible.FinalDelegate;
 import org.bspeice.minimalbible.MBTestCase;
+import org.bspeice.minimalbible.SafeValDelegate;
 
 import kotlin.PropertyMetadataImpl;
 
 /**
  * Test that the FinalDelegate actually obeys its contract
  */
-public class FinalDelegateTest extends MBTestCase {
+public class SafeValDelegateTest extends MBTestCase {
 
-    FinalDelegate<String> delegate;
+    SafeValDelegate<String> delegate;
 
     public void setUp() {
-        delegate = new FinalDelegate<String>();
+        delegate = new SafeValDelegate<String>();
     }
 
     public void testDelegateNullSafety() {

app/src/main/kotlin/org/bspeice/minimalbible/SafeValDelegate.kt

@@ -1,20 +1,22 @@
 package org.bspeice.minimalbible
 
+import kotlin.properties.ReadWriteProperty
+
 /**
  * The purpose of this delegate is to guarantee null-safety, while
  * also ensuring a pseudo-val type. If you try to read before use, error.
  * If you try to set multiple times, error.
  */
 
-public class FinalDelegate<T : Any>() {
+public class SafeValDelegate<T : Any>() : ReadWriteProperty<Any?, T> {
     private var value: T? = null
     private var didAssign: Boolean = false
 
-    public fun get(thisRef: Any?, desc: PropertyMetadata): T {
+    public override fun get(thisRef: Any?, desc: PropertyMetadata): T {
         return value ?: throw IllegalStateException("Property ${desc.name} should be initialized before get")
     }
 
-    public fun set(thisRef: Any?, desc: PropertyMetadata, value: T) {
+    public override fun set(thisRef: Any?, desc: PropertyMetadata, value: T) {
         if (!didAssign) {
             this.value = value
             this.didAssign = true

app/src/main/kotlin/org/bspeice/minimalbible/service/format/osisparser/OsisParser.kt

@@ -5,7 +5,7 @@ import org.crosswire.jsword.passage.Verse
 import java.util.ArrayDeque
 import org.xml.sax.Attributes
 import org.crosswire.jsword.book.OSISUtil
-import org.bspeice.minimalbible.FinalDelegate
+import org.bspeice.minimalbible.SafeValDelegate
 
 /**
  * Created by bspeice on 9/10/14.
@@ -15,7 +15,7 @@ class OsisParser() : DefaultHandler() {
 
     // Don't pass a verse as part of the constructor, but still guarantee
     // that it will exist
-    public var verse: Verse by FinalDelegate()
+    public var verse: Verse by SafeValDelegate()
     val verseContent: VerseContent
         get() = VerseContent(verse)