Fix #220

Author: cowtowncoder

release-notes/VERSION

@@ -14,6 +14,10 @@ JSON library.
 === Releases ===
 ------------------------------------------------------------------------
 
+2.6.3 (not yet released)
+
+#220: Problem with `JsonParser.nextFieldName(SerializableString)` for byte-backed parser
+
 2.6.2 (14-Sep-2015)
 
 #213: Parser is sometimes wrong when using CANONICALIZE_FIELD_NAMES

src/main/java/com/fasterxml/jackson/core/json/UTF8StreamJsonParser.java

@@ -934,7 +934,8 @@ public boolean nextFieldName(SerializableString str) throws IOException
                     while (true) {
                         if (ptr == end) { // yes, match!
                             _parsingContext.setCurrentName(str.getValue());
-                            _isNextTokenNameYes(_skipColonFast(ptr+1));
+                            i = _skipColonFast(ptr+1);
+                            _isNextTokenNameYes(i);
                             return true;
                         }
                         if (nameBytes[offset] != _inputBuffer[ptr]) {
@@ -1099,6 +1100,8 @@ private final int _skipColonFast(int ptr) throws IOException
                     }
                 }
             }
+            _inputPtr = ptr-1;
+            return _skipColon2(true);
         }
         _inputPtr = ptr-1;
         return _skipColon2(false);
@@ -2980,7 +2983,7 @@ private final int _skipColon() throws IOException
         }
         return _skipColon2(false);
     }
-    
+
     private final int _skipColon2(boolean gotColon) throws IOException
     {
         while (_inputPtr < _inputEnd || loadMore()) {

src/test/java/com/fasterxml/jackson/core/json/TestNextXxx.java

@@ -21,7 +21,6 @@ public class TestNextXxx
 
     private final JsonFactory JSON_F = new JsonFactory();
 
-    // [JACKSON-653]
     public void testIsNextTokenName() throws Exception
     {
         _testIsNextTokenName1(false);
@@ -32,14 +31,14 @@ public void testIsNextTokenName() throws Exception
         _testIsNextTokenName3(true);
     }
 
-    // [Issue#34]
+    // [jackson-core#34]
     public void testIssue34() throws Exception
     {
         _testIssue34(false);
         _testIssue34(true);
     }
 
-    // [Issue#38] with nextFieldName
+    // [jackson-core#38] with nextFieldName
     public void testIssue38() throws Exception
     {
         _testIssue38(false);
@@ -52,6 +51,13 @@ public void testNextNameWithLongContent() throws Exception
         _testNextNameWithLong(true);
     }
 
+    // for [core#220]: problem with `nextFieldName(str)`, indented content
+    public void testNextNameWithIndentation() throws Exception
+    {
+        _testNextFieldNameIndent(false);
+        _testNextFieldNameIndent(true);
+    }
+    
     public void testNextTextValue() throws Exception
     {
         _textNextText(false);
@@ -194,40 +200,58 @@ private void _testIsNextTokenName2(boolean useStream) throws Exception
     private void _testIsNextTokenName3(boolean useStream) throws Exception
     {
         final String DOC = "{\"name\":123,\"name2\":14,\"x\":\"name\"}";
-        JsonParser jp = useStream ?
+        JsonParser p = useStream ?
                 JSON_F.createParser(new ByteArrayInputStream(DOC.getBytes("UTF-8")))
             : JSON_F.createParser(new StringReader(DOC));
-        assertNull(jp.nextFieldName());
-        assertToken(JsonToken.START_OBJECT, jp.getCurrentToken());
-        assertEquals("name", jp.nextFieldName());
-        assertToken(JsonToken.FIELD_NAME, jp.getCurrentToken());
-        assertEquals("name", jp.getCurrentName());
-        assertEquals("name", jp.getText());
-        assertNull(jp.nextFieldName());
-        assertToken(JsonToken.VALUE_NUMBER_INT, jp.getCurrentToken());
-        assertEquals(123, jp.getIntValue());
+        assertNull(p.nextFieldName());
+        assertToken(JsonToken.START_OBJECT, p.getCurrentToken());
+        assertEquals("name", p.nextFieldName());
+        assertToken(JsonToken.FIELD_NAME, p.getCurrentToken());
+        assertEquals("name", p.getCurrentName());
+        assertEquals("name", p.getText());
+        assertNull(p.nextFieldName());
+        assertToken(JsonToken.VALUE_NUMBER_INT, p.getCurrentToken());
+        assertEquals(123, p.getIntValue());
 
-        assertEquals("name2", jp.nextFieldName());
-        assertToken(JsonToken.FIELD_NAME, jp.getCurrentToken());
-        assertEquals("name2", jp.getCurrentName());
-        assertToken(JsonToken.VALUE_NUMBER_INT, jp.nextToken());
+        assertEquals("name2", p.nextFieldName());
+        assertToken(JsonToken.FIELD_NAME, p.getCurrentToken());
+        assertEquals("name2", p.getCurrentName());
+        assertToken(JsonToken.VALUE_NUMBER_INT, p.nextToken());
 
-        assertEquals("x", jp.nextFieldName());
-        assertToken(JsonToken.FIELD_NAME, jp.getCurrentToken());
-        assertEquals("x", jp.getCurrentName());
+        assertEquals("x", p.nextFieldName());
+        assertToken(JsonToken.FIELD_NAME, p.getCurrentToken());
+        assertEquals("x", p.getCurrentName());
 
-        assertNull(jp.nextFieldName());
-        assertToken(JsonToken.VALUE_STRING, jp.getCurrentToken());
+        assertNull(p.nextFieldName());
+        assertToken(JsonToken.VALUE_STRING, p.getCurrentToken());
 
-        assertNull(jp.nextFieldName());
-        assertToken(JsonToken.END_OBJECT, jp.getCurrentToken());
+        assertNull(p.nextFieldName());
+        assertToken(JsonToken.END_OBJECT, p.getCurrentToken());
 
-        assertNull(jp.nextFieldName());
-        assertNull(jp.getCurrentToken());
+        assertNull(p.nextFieldName());
+        assertNull(p.getCurrentToken());
 
-        jp.close();
+        p.close();
     }
 
+    private void _testNextFieldNameIndent(boolean useStream) throws Exception
+    {
+        final String DOC = "{\n  \"name\" : \n  [\n  ]\n   }";
+        JsonParser p = useStream ?
+                JSON_F.createParser(new ByteArrayInputStream(DOC.getBytes("UTF-8")))
+            : JSON_F.createParser(new StringReader(DOC));
+        assertToken(JsonToken.START_OBJECT, p.nextToken());
+        assertTrue(p.nextFieldName(new SerializedString("name")));
+
+        assertToken(JsonToken.START_ARRAY, p.nextToken());
+        assertToken(JsonToken.END_ARRAY, p.nextToken());
+        assertToken(JsonToken.END_OBJECT, p.nextToken());
+
+        assertNull(p.nextToken());
+
+        p.close();
+    }
+    
     private void _textNextText(boolean useStream) throws Exception
     {
         final String DOC = aposToQuotes("{'a':'123','b':5,'c':[false,'foo']}");

src/test/java/com/fasterxml/jackson/core/sym/SymbolsViaParserTest.java

@@ -1,6 +1,5 @@
 package com.fasterxml.jackson.core.sym;
 
-import java.io.ByteArrayInputStream;
 import java.io.IOException;
 import java.util.HashSet;