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java/org/apache/tomcat/util/bcel/classfile/ConstantClass.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 org.apache.tomcat.util.bcel.Const;
+
+/**
+ * This class is derived from the abstract {@link Constant}
+ * and represents a reference to a (external) class.
+ *
+ * @see     Constant
+ */
+public final class ConstantClass extends Constant {
+
+    private final int name_index; // Identical to ConstantString except for the name
+
+
+    /**
+     * Constructs an instance from file data.
+     *
+     * @param dataInput Input stream
+     * @throws IOException if an I/O error occurs reading from the given {@code dataInput}.
+     */
+    ConstantClass(final DataInput dataInput) throws IOException {
+        super(Const.CONSTANT_Class);
+        this.name_index = dataInput.readUnsignedShort();
+    }
+
+
+    /**
+     * @return Name index in constant pool of class name.
+     */
+    public int getNameIndex() {
+        return name_index;
+    }
+}