--- /dev/null
+package org.apache.lucene.index;
+
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import java.io.IOException;
+
+import org.apache.lucene.util.ArrayUtil;
+import org.apache.lucene.util.RamUsageEstimator;
+
+/**
+ * @lucene.experimental
+ */
+
+abstract class FormatPostingsTermsConsumer {
+
+ /** Adds a new term in this field; term ends with U+FFFF
+ * char */
+ abstract FormatPostingsDocsConsumer addTerm(char[] text, int start) throws IOException;
+
+ char[] termBuffer;
+ FormatPostingsDocsConsumer addTerm(String text) throws IOException {
+ final int len = text.length();
+ if (termBuffer == null || termBuffer.length < 1+len)
+ termBuffer = new char[ArrayUtil.oversize(1+len, RamUsageEstimator.NUM_BYTES_CHAR)];
+ text.getChars(0, len, termBuffer, 0);
+ termBuffer[len] = 0xffff;
+ return addTerm(termBuffer, 0);
+ }
+
+ /** Called when we are done adding terms to this field */
+ abstract void finish() throws IOException;
+}