100 lines
3.6 KiB
Java
100 lines
3.6 KiB
Java
/*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The ASF licenses this file to You under the Apache License, Version 2.0
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* (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.apache.tomcat.util.bcel.classfile;
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import java.io.DataInput;
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import java.io.IOException;
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public abstract class ElementValue
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{
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private final int type;
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private final ConstantPool cpool;
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ElementValue(final int type, final ConstantPool cpool) {
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this.type = type;
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this.cpool = cpool;
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}
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public abstract String stringifyValue();
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public static final byte STRING = 's';
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public static final byte ENUM_CONSTANT = 'e';
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public static final byte CLASS = 'c';
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public static final byte ANNOTATION = '@';
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public static final byte ARRAY = '[';
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public static final byte PRIMITIVE_INT = 'I';
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public static final byte PRIMITIVE_BYTE = 'B';
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public static final byte PRIMITIVE_CHAR = 'C';
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public static final byte PRIMITIVE_DOUBLE = 'D';
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public static final byte PRIMITIVE_FLOAT = 'F';
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public static final byte PRIMITIVE_LONG = 'J';
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public static final byte PRIMITIVE_SHORT = 'S';
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public static final byte PRIMITIVE_BOOLEAN = 'Z';
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public static ElementValue readElementValue(final DataInput input, final ConstantPool cpool) throws IOException
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{
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final byte type = input.readByte();
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switch (type)
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{
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case PRIMITIVE_BYTE:
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case PRIMITIVE_CHAR:
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case PRIMITIVE_DOUBLE:
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case PRIMITIVE_FLOAT:
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case PRIMITIVE_INT:
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case PRIMITIVE_LONG:
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case PRIMITIVE_SHORT:
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case PRIMITIVE_BOOLEAN:
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case STRING:
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return new SimpleElementValue(type, input.readUnsignedShort(), cpool);
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case ENUM_CONSTANT:
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input.readUnsignedShort(); // Unused type_index
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return new EnumElementValue(ENUM_CONSTANT, input.readUnsignedShort(), cpool);
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case CLASS:
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return new ClassElementValue(CLASS, input.readUnsignedShort(), cpool);
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case ANNOTATION:
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// TODO isRuntimeVisible
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return new AnnotationElementValue(ANNOTATION, new AnnotationEntry(input, cpool), cpool);
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case ARRAY:
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final int numArrayVals = input.readUnsignedShort();
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final ElementValue[] evalues = new ElementValue[numArrayVals];
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for (int j = 0; j < numArrayVals; j++)
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{
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evalues[j] = ElementValue.readElementValue(input, cpool);
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}
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return new ArrayElementValue(ARRAY, evalues, cpool);
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default:
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throw new ClassFormatException(
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"Unexpected element value kind in annotation: " + type);
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}
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}
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final ConstantPool getConstantPool() {
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return cpool;
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}
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final int getType() {
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return type;
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}
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}
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