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java/org/apache/tomcat/util/bcel/classfile/SimpleElementValue.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 org.apache.tomcat.util.bcel.Const;
+
+public class SimpleElementValue extends ElementValue
+{
+    private final int index;
+
+    SimpleElementValue(final int type, final int index, final ConstantPool cpool) {
+        super(type, cpool);
+        this.index = index;
+    }
+
+    /**
+     * @return Value entry index in the cpool
+     */
+    public int getIndex()
+    {
+        return index;
+    }
+
+
+    // Whatever kind of value it is, return it as a string
+    @Override
+    public String stringifyValue()
+    {
+        final ConstantPool cpool = super.getConstantPool();
+        final int _type = super.getType();
+        switch (_type)
+        {
+        case PRIMITIVE_INT:
+            final ConstantInteger c = (ConstantInteger) cpool.getConstant(getIndex(),
+                    Const.CONSTANT_Integer);
+            return Integer.toString(c.getBytes());
+        case PRIMITIVE_LONG:
+            final ConstantLong j = (ConstantLong) cpool.getConstant(getIndex(),
+                    Const.CONSTANT_Long);
+            return Long.toString(j.getBytes());
+        case PRIMITIVE_DOUBLE:
+            final ConstantDouble d = (ConstantDouble) cpool.getConstant(getIndex(),
+                    Const.CONSTANT_Double);
+            return Double.toString(d.getBytes());
+        case PRIMITIVE_FLOAT:
+            final ConstantFloat f = (ConstantFloat) cpool.getConstant(getIndex(),
+                    Const.CONSTANT_Float);
+            return Float.toString(f.getBytes());
+        case PRIMITIVE_SHORT:
+            final ConstantInteger s = (ConstantInteger) cpool.getConstant(getIndex(),
+                    Const.CONSTANT_Integer);
+            return Integer.toString(s.getBytes());
+        case PRIMITIVE_BYTE:
+            final ConstantInteger b = (ConstantInteger) cpool.getConstant(getIndex(),
+                    Const.CONSTANT_Integer);
+            return Integer.toString(b.getBytes());
+        case PRIMITIVE_CHAR:
+            final ConstantInteger ch = (ConstantInteger) cpool.getConstant(
+                    getIndex(), Const.CONSTANT_Integer);
+            return String.valueOf((char)ch.getBytes());
+        case PRIMITIVE_BOOLEAN:
+            final ConstantInteger bo = (ConstantInteger) cpool.getConstant(
+                    getIndex(), Const.CONSTANT_Integer);
+            if (bo.getBytes() == 0) {
+                return "false";
+            }
+            return "true";
+        case STRING:
+            final ConstantUtf8 cu8 = (ConstantUtf8) cpool.getConstant(getIndex(),
+                    Const.CONSTANT_Utf8);
+            return cu8.getBytes();
+        default:
+            throw new RuntimeException("SimpleElementValue class does not know how to stringify type " + _type);
+        }
+    }
+}