Implement JsonStructureParser.currentEvent() (#134)

Co-authored-by: Jorge Bescos Gascon <[email protected]>

Author: marschall

impl/src/main/java/org/eclipse/parsson/JsonStructureParser.java

@@ -97,6 +97,11 @@ public boolean hasNext() {
         return !((state == Event.END_OBJECT || state == Event.END_ARRAY) && scopeStack.isEmpty());
     }
 
+    @Override
+    public Event currentEvent() {
+        return state;
+    }
+
     @Override
     public Event next() {
         if (!hasNext()) {
@@ -121,6 +126,7 @@ private void transition() {
                     state = Event.END_ARRAY;
                 }
             } else {
+
                 // ObjectScope
                 if (state == Event.KEY_NAME) {
                     nextStateAndEndOfTheObjectOrArray();

impl/src/test/java/org/eclipse/parsson/tests/JsonParserTest.java

@@ -180,10 +180,12 @@ static void testEmptyArrayIterator(JsonParser parser) {
 		Assertions.assertTrue(parser.hasNext());
 		Assertions.assertTrue(parser.hasNext());
         Assertions.assertEquals(Event.START_ARRAY, parser.next());
+        Assertions.assertEquals(Event.START_ARRAY, parser.currentEvent());
 
 		Assertions.assertTrue(parser.hasNext());
 		Assertions.assertTrue(parser.hasNext());
         Assertions.assertEquals(Event.END_ARRAY, parser.next());
+        Assertions.assertEquals(Event.END_ARRAY, parser.currentEvent());
 
 		Assertions.assertFalse(parser.hasNext());
 		Assertions.assertFalse(parser.hasNext());
@@ -212,7 +214,9 @@ void testEmptyArrayIterator2Structure() {
 
     static void testEmptyArrayIterator2(JsonParser parser) {
         Assertions.assertEquals(Event.START_ARRAY, parser.next());
+        Assertions.assertEquals(Event.START_ARRAY, parser.currentEvent());
         Assertions.assertEquals(Event.END_ARRAY, parser.next());
+        Assertions.assertEquals(Event.END_ARRAY, parser.currentEvent());
         try {
             parser.next();
             Assertions.fail("Should have thrown a NoSuchElementException");
@@ -237,7 +241,9 @@ void testEmptyArrayIterator3Structure() {
 
     static void testEmptyArrayIterator3(JsonParser parser) {
         Assertions.assertEquals(Event.START_ARRAY, parser.next());
+        Assertions.assertEquals(Event.START_ARRAY, parser.currentEvent());
         Assertions.assertEquals(Event.END_ARRAY, parser.next());
+        Assertions.assertEquals(Event.END_ARRAY, parser.currentEvent());
 		Assertions.assertFalse(parser.hasNext());
         try {
             parser.next();
@@ -521,13 +527,21 @@ void testNestedArrayStructure() {
 
     static void testNestedArray(JsonParser parser) {
         Assertions.assertEquals(Event.START_ARRAY, parser.next());
+        Assertions.assertEquals(Event.START_ARRAY, parser.currentEvent());
         Assertions.assertEquals(Event.START_ARRAY, parser.next());
+        Assertions.assertEquals(Event.START_ARRAY, parser.currentEvent());
         Assertions.assertEquals(Event.END_ARRAY, parser.next());
+        Assertions.assertEquals(Event.END_ARRAY, parser.currentEvent());
         Assertions.assertEquals(Event.START_ARRAY, parser.next());
+        Assertions.assertEquals(Event.START_ARRAY, parser.currentEvent());
         Assertions.assertEquals(Event.START_ARRAY, parser.next());
+        Assertions.assertEquals(Event.START_ARRAY, parser.currentEvent());
         Assertions.assertEquals(Event.END_ARRAY, parser.next());
+        Assertions.assertEquals(Event.END_ARRAY, parser.currentEvent());
         Assertions.assertEquals(Event.END_ARRAY, parser.next());
+        Assertions.assertEquals(Event.END_ARRAY, parser.currentEvent());
         Assertions.assertEquals(Event.END_ARRAY, parser.next());
+        Assertions.assertEquals(Event.END_ARRAY, parser.currentEvent());
 		Assertions.assertFalse(parser.hasNext());
 		Assertions.assertFalse(parser.hasNext());
     }