ppkarwasz commented on code in PR #747:
URL: https://github.com/apache/commons-compress/pull/747#discussion_r2532259511


##########
src/main/java/org/apache/commons/compress/harmony/internal/AttributeLayoutParser.java:
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@@ -0,0 +1,422 @@
+/*
+ * 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
+ *
+ *   https://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.
+ */
+package org.apache.commons.compress.harmony.internal;
+
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+
+import org.apache.commons.compress.harmony.pack200.Pack200Exception;
+import org.apache.commons.lang3.Range;
+
+/**
+ * Encapsulates parsing of attribute layout definitions.
+ *
+ * <p>Previously the parsing logic was duplicated in {@link 
org.apache.commons.compress.harmony.pack200.NewAttributeBands} and
+ * {@link org.apache.commons.compress.harmony.unpack200.NewAttributeBands}.</p>
+ *
+ * @param <LAYOUT_ELEMENT>           the type corresponding to the {@code 
layout_element} production
+ * @param <ATTRIBUTE_LAYOUT_ELEMENT> the type corresponding to the elements of 
the {@code attribute_layout} production: either {@code layout_element} or
+ *                                   {@code callable}
+ */
+public final class AttributeLayoutParser<ATTRIBUTE_LAYOUT_ELEMENT, 
LAYOUT_ELEMENT extends ATTRIBUTE_LAYOUT_ELEMENT> {

Review Comment:
   Regarding `@since`: because these classes live in an internal package that 
is not exported to other modules, they are not part of the public API surface. 
External code cannot use them, so a `@since` tag would not be useful: the class 
is simply present in this release or it isn’t.
   
   On the generic parameter names: the original version uses different 
interfaces for top-level elements and nested elements. In the naming of the 
parameters I tried to follow the name of those interfaces. However, as of 
6ccaf88216fcbf45416a22d0e48e20e0de945eaf the hierarchy has been flattened and a 
single type parameter is now used.



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