Use growNoCopy in some places (#12951)

lucene/analysis/kuromoji/src/java/org/apache/lucene/analysis/ja/dict/TokenInfoDictionaryBuilder.java

@@ -116,7 +116,7 @@ class TokenInfoDictionaryBuilder {
         // new word to add to fst
         ord++;
         lastValue = token;
-        scratch.grow(token.length());
+        scratch.growNoCopy(token.length());
         scratch.setLength(token.length());
         for (int i = 0; i < token.length(); i++) {
           scratch.setIntAt(i, token.charAt(i));

lucene/analysis/kuromoji/src/java/org/apache/lucene/analysis/ja/dict/UserDictionary.java

@@ -138,7 +138,7 @@ public final class UserDictionary implements Dictionary<UserMorphData> {
       }
       // add mapping to FST
       String token = values[0];
-      scratch.grow(token.length());
+      scratch.growNoCopy(token.length());
       scratch.setLength(token.length());
       for (int i = 0; i < token.length(); i++) {
         scratch.setIntAt(i, (int) token.charAt(i));

lucene/analysis/nori/src/java/org/apache/lucene/analysis/ko/dict/TokenInfoDictionaryBuilder.java

@@ -112,7 +112,7 @@ class TokenInfoDictionaryBuilder {
         // new word to add to fst
         ord++;
         lastValue = surfaceForm;
-        scratch.grow(surfaceForm.length());
+        scratch.growNoCopy(surfaceForm.length());
         scratch.setLength(surfaceForm.length());
         for (int i = 0; i < surfaceForm.length(); i++) {
           scratch.setIntAt(i, surfaceForm.charAt(i));

lucene/analysis/nori/src/java/org/apache/lucene/analysis/ko/dict/UserDictionary.java

@@ -121,7 +121,7 @@ public final class UserDictionary implements Dictionary<UserMorphData> {
       }
 
       // add mapping to FST
-      scratch.grow(token.length());
+      scratch.growNoCopy(token.length());
       scratch.setLength(token.length());
       for (int i = 0; i < token.length(); i++) {
         scratch.setIntAt(i, token.charAt(i));

lucene/codecs/src/java/org/apache/lucene/codecs/simpletext/SimpleTextDocValuesReader.java

@@ -330,7 +330,7 @@ class SimpleTextDocValuesReader extends DocValuesProducer {
               } catch (ParseException pe) {
                 throw new CorruptIndexException("failed to parse int length", in, pe);
               }
-              termByteArray.grow(len);
+              termByteArray.growNoCopy(len);
               termByteArray.setLength(len);
               in.readBytes(termByteArray.bytes(), 0, len);
               term.copyBytes(SimpleTextUtil.fromBytesRefString(termByteArray.get().utf8ToString()));
@@ -571,7 +571,7 @@ class SimpleTextDocValuesReader extends DocValuesProducer {
         } catch (ParseException pe) {
           throw new CorruptIndexException("failed to parse int length", in, pe);
         }
-        term.grow(len);
+        term.growNoCopy(len);
         term.setLength(len);
         in.readBytes(term.bytes(), 0, len);
         return term.get();
@@ -758,7 +758,7 @@ class SimpleTextDocValuesReader extends DocValuesProducer {
         } catch (ParseException pe) {
           throw new CorruptIndexException("failed to parse int length", in, pe);
         }
-        term.grow(len);
+        term.growNoCopy(len);
         term.setLength(len);
         in.readBytes(term.bytes(), 0, len);
         return term.get();

lucene/codecs/src/java/org/apache/lucene/codecs/simpletext/SimpleTextFieldsReader.java

@@ -600,7 +600,7 @@ class SimpleTextFieldsReader extends FieldsProducer {
       SimpleTextUtil.readLine(in, scratch);
       if (StringHelper.startsWith(scratch.get(), PAYLOAD)) {
         final int len = scratch.length() - PAYLOAD.length;
-        scratch2.grow(len);
+        scratch2.growNoCopy(len);
         System.arraycopy(scratch.bytes(), PAYLOAD.length, scratch2.bytes(), 0, len);
         scratch2.setLength(len);
         payload = scratch2.get();
@@ -727,7 +727,7 @@ class SimpleTextFieldsReader extends FieldsProducer {
           }
           lastDocsStart = in.getFilePointer();
           final int len = scratch.length() - TERM.length;
-          lastTerm.grow(len);
+          lastTerm.growNoCopy(len);
           System.arraycopy(scratch.bytes(), TERM.length, lastTerm.bytes(), 0, len);
           lastTerm.setLength(len);
           docFreq = 0;

lucene/codecs/src/java/org/apache/lucene/codecs/simpletext/SimpleTextTermVectorsReader.java

@@ -150,7 +150,7 @@ public class SimpleTextTermVectorsReader extends TermVectorsReader {
         readLine();
         assert StringHelper.startsWith(scratch.get(), TERMTEXT);
         int termLength = scratch.length() - TERMTEXT.length;
-        term.grow(termLength);
+        term.growNoCopy(termLength);
         term.setLength(termLength);
         System.arraycopy(scratch.bytes(), TERMTEXT.length, term.bytes(), 0, termLength);
 

lucene/core/src/java/org/apache/lucene/codecs/TermVectorsWriter.java

@@ -143,7 +143,7 @@ public abstract class TermVectorsWriter implements Closeable, Accountable {
           if (payload == null) {
             payload = new BytesRefBuilder();
           }
-          payload.grow(payloadLength);
+          payload.growNoCopy(payloadLength);
 
           positions.readBytes(payload.bytes(), 0, payloadLength);
           payload.setLength(payloadLength);

lucene/core/src/java/org/apache/lucene/index/FreqProxFields.java

@@ -505,7 +505,7 @@ class FreqProxFields extends Fields {
         hasPayload = true;
         // has a payload
         payload.setLength(posReader.readVInt());
-        payload.grow(payload.length());
+        payload.growNoCopy(payload.length());
         posReader.readBytes(payload.bytes(), 0, payload.length());
       } else {
         hasPayload = false;

lucene/core/src/java/org/apache/lucene/util/ByteBlockPool.java

@@ -216,7 +216,7 @@ public final class ByteBlockPool implements Accountable {
       result.offset = pos;
     } else {
       // Uncommon case: The slice spans at least 2 blocks, so we must copy the bytes.
-      builder.grow(length);
+      builder.growNoCopy(length);
       result.bytes = builder.get().bytes;
       result.offset = 0;
       readBytes(offset, result.bytes, 0, length);

lucene/core/src/java/org/apache/lucene/util/BytesRefArray.java

@@ -94,7 +94,7 @@ public final class BytesRefArray implements SortableBytesRefArray {
     Objects.checkIndex(index, lastElement);
     int offset = offsets[index];
     int length = index == lastElement - 1 ? currentOffset - offset : offsets[index + 1] - offset;
-    spare.grow(length);
+    spare.growNoCopy(length);
     spare.setLength(length);
     pool.readBytes(offset, spare.bytes(), 0, spare.length());
     return spare.get();

lucene/core/src/java/org/apache/lucene/util/BytesRefBuilder.java

@@ -60,6 +60,13 @@ public class BytesRefBuilder {
     ref.bytes = ArrayUtil.grow(ref.bytes, capacity);
   }
 
+  /**
+   * Used to grow the builder without copying bytes. see {@link ArrayUtil#growNoCopy(byte[], int)}.
+   */
+  public void growNoCopy(int capacity) {
+    ref.bytes = ArrayUtil.growNoCopy(ref.bytes, capacity);
+  }
+
   /** Append a single byte to this builder. */
   public void append(byte b) {
     grow(ref.length + 1);

lucene/core/src/java/org/apache/lucene/util/IntsRefBuilder.java

@@ -77,9 +77,14 @@ public class IntsRefBuilder {
     ref.ints = ArrayUtil.grow(ref.ints, newLength);
   }
 
+  /** Grow the reference array without copying the origin data to the new array. */
+  public void growNoCopy(int newLength) {
+    ref.ints = ArrayUtil.growNoCopy(ref.ints, newLength);
+  }
+
   /** Copies the given array into this instance. */
   public void copyInts(int[] otherInts, int otherOffset, int otherLength) {
-    grow(otherLength);
+    growNoCopy(otherLength);
     System.arraycopy(otherInts, otherOffset, ref.ints, 0, otherLength);
     ref.length = otherLength;
   }
@@ -94,7 +99,7 @@ public class IntsRefBuilder {
    * UTF-8 to UTF-32 and then copied into this builder.
    */
   public void copyUTF8Bytes(BytesRef bytes) {
-    grow(bytes.length);
+    growNoCopy(bytes.length);
     ref.length = UnicodeUtil.UTF8toUTF32(bytes, ref.ints);
   }
 

lucene/core/src/java/org/apache/lucene/util/OfflineSorter.java

@@ -593,7 +593,7 @@ public class OfflineSorter {
       }
 
       short length = in.readShort();
-      ref.grow(length);
+      ref.growNoCopy(length);
       ref.setLength(length);
       in.readBytes(ref.bytes(), 0, length);
       return ref.get();

lucene/core/src/java/org/apache/lucene/util/fst/Util.java

@@ -738,7 +738,7 @@ public final class Util {
   public static IntsRef toUTF16(CharSequence s, IntsRefBuilder scratch) {
     final int charLimit = s.length();
     scratch.setLength(charLimit);
-    scratch.grow(charLimit);
+    scratch.growNoCopy(charLimit);
     for (int idx = 0; idx < charLimit; idx++) {
       scratch.setIntAt(idx, s.charAt(idx));
     }
@@ -794,7 +794,7 @@ public final class Util {
 
   /** Just converts IntsRef to BytesRef; you must ensure the int values fit into a byte. */
   public static BytesRef toBytesRef(IntsRef input, BytesRefBuilder scratch) {
-    scratch.grow(input.length);
+    scratch.growNoCopy(input.length);
     for (int i = 0; i < input.length; i++) {
       int value = input.ints[i + input.offset];
       // NOTE: we allow -128 to 255

lucene/suggest/src/java/org/apache/lucene/search/suggest/analyzing/AnalyzingSuggester.java

@@ -452,7 +452,7 @@ public class AnalyzingSuggester extends Lookup {
             payload = null;
           }
 
-          buffer = ArrayUtil.grow(buffer, requiredLength);
+          buffer = ArrayUtil.growNoCopy(buffer, requiredLength);
 
           output.reset(buffer);
 
@@ -522,7 +522,7 @@ public class AnalyzingSuggester extends Lookup {
         }
         input.reset(bytes.bytes, bytes.offset, bytes.length);
         short analyzedLength = input.readShort();
-        analyzed.grow(analyzedLength + 2);
+        analyzed.growNoCopy(analyzedLength + 2);
         input.readBytes(analyzed.bytes(), 0, analyzedLength);
         analyzed.setLength(analyzedLength);
 

lucene/suggest/src/java/org/apache/lucene/search/suggest/document/CompletionFieldsConsumer.java

@@ -223,7 +223,7 @@ final class CompletionFieldsConsumer extends FieldsConsumer {
           ByteArrayDataInput input =
               new ByteArrayDataInput(payload.bytes, payload.offset, payload.length);
           int len = input.readVInt();
-          scratch.grow(len);
+          scratch.growNoCopy(len);
           scratch.setLength(len);
           input.readBytes(scratch.bytes(), 0, scratch.length());
           long weight = input.readVInt() - 1;

lucene/suggest/src/java/org/apache/lucene/search/suggest/fst/FSTCompletionBuilder.java

@@ -176,7 +176,7 @@ public class FSTCompletionBuilder {
           "Bucket outside of the allowed range [0, " + buckets + "): " + bucket);
     }
 
-    scratch.grow(utf8.length + 10);
+    scratch.growNoCopy(utf8.length + 10);
     scratch.clear();
     scratch.append((byte) bucket);
     scratch.append(utf8);

lucene/suggest/src/java/org/apache/lucene/search/suggest/fst/FSTCompletionLookup.java

@@ -180,7 +180,7 @@ public class FSTCompletionLookup extends Lookup {
       int inputLineCount = 0;
       while ((spare = iterator.next()) != null) {
         if (spare.length + 4 >= buffer.length) {
-          buffer = ArrayUtil.grow(buffer, spare.length + 4);
+          buffer = ArrayUtil.growNoCopy(buffer, spare.length + 4);
         }
 
         output.reset(buffer);

lucene/test-framework/src/java/org/apache/lucene/tests/util/fst/FSTTester.java

@@ -155,7 +155,7 @@ public class FSTTester<T> {
   }
 
   static IntsRef toIntsRef(BytesRef br, IntsRefBuilder ir) {
-    ir.grow(br.length);
+    ir.growNoCopy(br.length);
     ir.clear();
     for (int i = 0; i < br.length; i++) {
       ir.append(br.bytes[br.offset + i] & 0xFF);