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java/org/apache/tomcat/util/bcel/classfile/AnnotationEntry.java

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+/*
+ *  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.
+ *
+ */
+package org.apache.tomcat.util.bcel.classfile;
+
+import java.io.DataInput;
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.List;
+
+import org.apache.tomcat.util.bcel.Const;
+
+/**
+ * represents one annotation in the annotation table
+ */
+public class AnnotationEntry {
+
+    private final int type_index;
+    private final ConstantPool constant_pool;
+
+    private final List<ElementValuePair> element_value_pairs;
+
+    /*
+     * Creates an AnnotationEntry from a DataInputStream
+     *
+     * @param input
+     * @param constant_pool
+     * @throws IOException
+     */
+    AnnotationEntry(final DataInput input, final ConstantPool constant_pool) throws IOException {
+
+        this.constant_pool = constant_pool;
+
+        type_index = input.readUnsignedShort();
+        final int num_element_value_pairs = input.readUnsignedShort();
+
+        element_value_pairs = new ArrayList<>(num_element_value_pairs);
+        for (int i = 0; i < num_element_value_pairs; i++) {
+            element_value_pairs.add(new ElementValuePair(input, constant_pool));
+        }
+    }
+
+    /**
+     * @return the annotation type name
+     */
+    public String getAnnotationType() {
+        final ConstantUtf8 c = (ConstantUtf8) constant_pool.getConstant(type_index, Const.CONSTANT_Utf8);
+        return c.getBytes();
+    }
+
+    /**
+     * @return the element value pairs in this annotation entry
+     */
+    public List<ElementValuePair> getElementValuePairs() {
+        return element_value_pairs;
+    }
+}