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- /* *******************************************************************
- * Copyright (c) 2004, 2013 IBM, VMware
- * All rights reserved.
- * This program and the accompanying materials are made available
- * under the terms of the Eclipse Public License v1.0
- * which accompanies this distribution and is available at
- * http://www.eclipse.org/legal/epl-v10.html
- *
- * Contributors:
- * Andy Clement - initial implementation {date}
- * ******************************************************************/
-
- package org.aspectj.apache.bcel.classfile.annotation;
-
- import java.io.DataInputStream;
- import java.io.DataOutputStream;
- import java.io.IOException;
-
- import org.aspectj.apache.bcel.classfile.ConstantPool;
-
- public abstract class ElementValue {
-
- public static final int STRING = 's';
- public static final int ENUM_CONSTANT = 'e';
- public static final int CLASS = 'c';
- public static final int ANNOTATION = '@';
- public static final int ARRAY = '[';
-
- public static final int PRIMITIVE_INT = 'I';
- public static final int PRIMITIVE_BYTE = 'B';
- public static final int PRIMITIVE_CHAR = 'C';
- public static final int PRIMITIVE_DOUBLE = 'D';
- public static final int PRIMITIVE_FLOAT = 'F';
- public static final int PRIMITIVE_LONG = 'J';
- public static final int PRIMITIVE_SHORT = 'S';
- public static final int PRIMITIVE_BOOLEAN = 'Z';
-
- protected int type;
- protected ConstantPool cpool;
-
- protected ElementValue(int type, ConstantPool cpool) {
- this.type = type;
- this.cpool = cpool;
- }
-
- public int getElementValueType() {
- return type;
- }
-
- public abstract String stringifyValue();
-
- public abstract void dump(DataOutputStream dos) throws IOException;
-
- public static ElementValue readElementValue(DataInputStream dis, ConstantPool cpGen) throws IOException {
- int type = dis.readUnsignedByte();
- switch (type) {
- case 'B': // byte
- return new SimpleElementValue(PRIMITIVE_BYTE, dis.readUnsignedShort(), cpGen);
- case 'C': // char
- return new SimpleElementValue(PRIMITIVE_CHAR, dis.readUnsignedShort(), cpGen);
- case 'D': // double
- return new SimpleElementValue(PRIMITIVE_DOUBLE, dis.readUnsignedShort(), cpGen);
- case 'F': // float
- return new SimpleElementValue(PRIMITIVE_FLOAT, dis.readUnsignedShort(), cpGen);
- case 'I': // int
- return new SimpleElementValue(PRIMITIVE_INT, dis.readUnsignedShort(), cpGen);
- case 'J': // long
- return new SimpleElementValue(PRIMITIVE_LONG, dis.readUnsignedShort(), cpGen);
- case 'S': // short
- return new SimpleElementValue(PRIMITIVE_SHORT, dis.readUnsignedShort(), cpGen);
- case 'Z': // boolean
- return new SimpleElementValue(PRIMITIVE_BOOLEAN, dis.readUnsignedShort(), cpGen);
- case 's': // String
- return new SimpleElementValue(STRING, dis.readUnsignedShort(), cpGen);
-
- case 'e': // Enum constant
- return new EnumElementValue(dis.readUnsignedShort(), dis.readUnsignedShort(), cpGen);
-
- case 'c': // Class
- return new ClassElementValue(dis.readUnsignedShort(), cpGen);
-
- // FIXME should this be true here? or should it be the value for the containing annotation?
- case '@': // Annotation
- return new AnnotationElementValue(ANNOTATION, AnnotationGen.read(dis, cpGen, true), cpGen);
-
- case '[': // Array
- int numArrayVals = dis.readUnsignedShort();
- ElementValue[] evalues = new ElementValue[numArrayVals];
- for (int j = 0; j < numArrayVals; j++) {
- evalues[j] = ElementValue.readElementValue(dis, cpGen);
- }
- return new ArrayElementValue(ARRAY, evalues, cpGen);
-
- default:
- throw new RuntimeException("Unexpected element value kind in annotation: " + type);
- }
- }
-
- protected ConstantPool getConstantPool() {
- return cpool;
- }
-
- /**
- * Creates an (modifiable) ElementValueGen copy of an (immutable) ElementValue - constant pool is assumed correct.
- */
- public static ElementValue copy(ElementValue value, ConstantPool cpool, boolean copyPoolEntries) {
- switch (value.getElementValueType()) {
- case 'B': // byte
- case 'C': // char
- case 'D': // double
- case 'F': // float
- case 'I': // int
- case 'J': // long
- case 'S': // short
- case 'Z': // boolean
- case 's': // String
- return new SimpleElementValue((SimpleElementValue) value, cpool, copyPoolEntries);
-
- case 'e': // Enum constant
- return new EnumElementValue((EnumElementValue) value, cpool, copyPoolEntries);
-
- case '@': // Annotation
- return new AnnotationElementValue((AnnotationElementValue) value, cpool, copyPoolEntries);
-
- case '[': // Array
- return new ArrayElementValue((ArrayElementValue) value, cpool, copyPoolEntries);
-
- case 'c': // Class
- return new ClassElementValue((ClassElementValue) value, cpool, copyPoolEntries);
-
- default:
- throw new RuntimeException("Not implemented yet! (" + value.getElementValueType() + ")");
- }
- }
- }
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