From ccdbde57264be45a6a05137b59bb5bcb81b6f7b3 Mon Sep 17 00:00:00 2001
From: Dai MIKURUBE <dmikurube@acm.org>
Date: Thu, 21 Sep 2023 17:48:38 +0900
Subject: [PATCH 1/2] Test callbacks for TokenFilter from
 FilteringParserDelegate

---
 .../core/filter/BasicParserFilteringTest.java | 84 +++++++++++++++++++
 1 file changed, 84 insertions(+)

diff --git a/src/test/java/com/fasterxml/jackson/core/filter/BasicParserFilteringTest.java b/src/test/java/com/fasterxml/jackson/core/filter/BasicParserFilteringTest.java
index f0c074258f..a006a4b46f 100644
--- a/src/test/java/com/fasterxml/jackson/core/filter/BasicParserFilteringTest.java
+++ b/src/test/java/com/fasterxml/jackson/core/filter/BasicParserFilteringTest.java
@@ -95,6 +95,73 @@ public TokenFilter filterStartObject() {
         }
     }
 
+    static class LoggingFilter extends TokenFilter
+    {
+        final TokenFilter _parent;
+        final ArrayList<String> _log;
+
+        LoggingFilter(final TokenFilter parent) {
+            _parent = parent;
+            _log = new ArrayList<>();
+        }
+
+        LoggingFilter(final TokenFilter parent, final ArrayList<String> log) {
+            _parent = parent;
+            _log = log;
+        }
+
+        TokenFilter rewrap(final TokenFilter filter) {
+            if (filter == null) {
+                return null;
+            } else if (filter == TokenFilter.INCLUDE_ALL) {
+                return TokenFilter.INCLUDE_ALL;
+            }
+            return new LoggingFilter(filter, _log);
+        }
+
+        @Override
+        public TokenFilter includeElement(final int index) {
+            _log.add("includeElement: " + index);
+            return rewrap(_parent.includeElement(index));
+        }
+
+        @Override
+        public TokenFilter includeProperty(final String name) {
+            _log.add("includeProperty: " + name);
+            return rewrap(_parent.includeProperty(name));
+        }
+
+        @Override
+        public TokenFilter filterStartObject() {
+            _log.add("filterStartObject");
+            return rewrap(_parent.filterStartObject());
+        }
+
+        @Override
+        public TokenFilter filterStartArray() {
+            _log.add("filterStartArray");
+            return rewrap(_parent.filterStartArray());
+        }
+
+        @Override
+        public void filterFinishObject() {
+            _log.add("filterFinishObject");
+            _parent.filterFinishObject();
+        }
+
+        @Override
+        public void filterFinishArray() {
+            _log.add("filterFinishArray");
+            _parent.filterFinishArray();
+        }
+
+        @Override
+        protected boolean _includeScalar() {
+            _log.add("_includeScalar");
+            return _parent._includeScalar();
+        }
+    }
+
     static final TokenFilter INCLUDE_EMPTY_IF_NOT_FILTERED = new TokenFilter() {
         @Override
         public boolean includeEmptyArray(boolean contentsFiltered) {
@@ -763,4 +830,21 @@ public void testExcludeLastArrayInsideArray() throws Exception {
         );
         assertEquals(a2q("[[]]"), readAndWrite(JSON_F, p));
     }
+
+    public void testCallbacksFromFilteringParserDelegate1() throws Exception {
+        LoggingFilter loggingFilter = new LoggingFilter(new JsonPointerBasedFilter("/parent"));
+
+        JsonParser p0 = JSON_F.createParser(a2q(
+                "{'parent':{'child':1}}"));
+        JsonParser p = new FilteringParserDelegate(p0,
+                loggingFilter,
+                Inclusion.ONLY_INCLUDE_ALL,
+                true
+        );
+        assertEquals(a2q("{'child':1}"), readAndWrite(JSON_F, p));
+
+        assertEquals(
+                Arrays.asList("filterStartObject", "includeProperty: parent", "filterFinishObject"),
+                loggingFilter._log);
+    }
 }

From 3100fea20d128ad46bd1e1029720a3d8f200e635 Mon Sep 17 00:00:00 2001
From: Dai MIKURUBE <dmikurube@acm.org>
Date: Thu, 21 Sep 2023 17:50:44 +0900
Subject: [PATCH 2/2] Call the right filterFinishArray/Object from
 FilteringParserDelegate

---
 .../jackson/core/filter/FilteringParserDelegate.java        | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/main/java/com/fasterxml/jackson/core/filter/FilteringParserDelegate.java b/src/main/java/com/fasterxml/jackson/core/filter/FilteringParserDelegate.java
index 130e57a264..64276c5fd8 100644
--- a/src/main/java/com/fasterxml/jackson/core/filter/FilteringParserDelegate.java
+++ b/src/main/java/com/fasterxml/jackson/core/filter/FilteringParserDelegate.java
@@ -403,7 +403,11 @@ public JsonToken nextToken() throws IOException
                 boolean returnEnd = _headContext.isStartHandled();
                 f = _headContext.getFilter();
                 if ((f != null) && (f != TokenFilter.INCLUDE_ALL)) {
-                    f.filterFinishArray();
+                    if (t.id() == JsonTokenId.ID_END_ARRAY) {
+                        f.filterFinishArray();
+                    } else {
+                        f.filterFinishObject();
+                    }
                 }
                 _headContext = _headContext.getParent();
                 _itemFilter = _headContext.getFilter();