| /* |
| * Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved. |
| */ |
| /* |
| * 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 com.sun.org.apache.bcel.internal.generic; |
| |
| import java.io.DataInput; |
| import java.io.DataOutputStream; |
| import java.io.IOException; |
| |
| import com.sun.org.apache.bcel.internal.classfile.AnnotationElementValue; |
| import com.sun.org.apache.bcel.internal.classfile.AnnotationEntry; |
| import com.sun.org.apache.bcel.internal.classfile.ArrayElementValue; |
| import com.sun.org.apache.bcel.internal.classfile.ClassElementValue; |
| import com.sun.org.apache.bcel.internal.classfile.ElementValue; |
| import com.sun.org.apache.bcel.internal.classfile.EnumElementValue; |
| import com.sun.org.apache.bcel.internal.classfile.SimpleElementValue; |
| |
| /** |
| * @since 6.0 |
| */ |
| public abstract class ElementValueGen |
| { |
| private final int type; |
| private final ConstantPoolGen cpGen; |
| |
| protected ElementValueGen(final int type, final ConstantPoolGen cpGen) |
| { |
| this.type = type; |
| this.cpGen = cpGen; |
| } |
| |
| /** |
| * Subtypes return an immutable variant of the ElementValueGen |
| */ |
| public abstract ElementValue getElementValue(); |
| |
| public int getElementValueType() |
| { |
| return type; |
| } |
| |
| public abstract String stringifyValue(); |
| |
| public abstract void dump(DataOutputStream dos) throws IOException; |
| |
| 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'; |
| |
| public static ElementValueGen readElementValue(final DataInput dis, |
| final ConstantPoolGen cpGen) throws IOException |
| { |
| final int type = dis.readUnsignedByte(); |
| switch (type) |
| { |
| case 'B': // byte |
| return new SimpleElementValueGen(PRIMITIVE_BYTE, dis |
| .readUnsignedShort(), cpGen); |
| case 'C': // char |
| return new SimpleElementValueGen(PRIMITIVE_CHAR, dis |
| .readUnsignedShort(), cpGen); |
| case 'D': // double |
| return new SimpleElementValueGen(PRIMITIVE_DOUBLE, dis |
| .readUnsignedShort(), cpGen); |
| case 'F': // float |
| return new SimpleElementValueGen(PRIMITIVE_FLOAT, dis |
| .readUnsignedShort(), cpGen); |
| case 'I': // int |
| return new SimpleElementValueGen(PRIMITIVE_INT, dis |
| .readUnsignedShort(), cpGen); |
| case 'J': // long |
| return new SimpleElementValueGen(PRIMITIVE_LONG, dis |
| .readUnsignedShort(), cpGen); |
| case 'S': // short |
| return new SimpleElementValueGen(PRIMITIVE_SHORT, dis |
| .readUnsignedShort(), cpGen); |
| case 'Z': // boolean |
| return new SimpleElementValueGen(PRIMITIVE_BOOLEAN, dis |
| .readUnsignedShort(), cpGen); |
| case 's': // String |
| return new SimpleElementValueGen(STRING, dis.readUnsignedShort(), |
| cpGen); |
| case 'e': // Enum constant |
| return new EnumElementValueGen(dis.readUnsignedShort(), dis |
| .readUnsignedShort(), cpGen); |
| case 'c': // Class |
| return new ClassElementValueGen(dis.readUnsignedShort(), cpGen); |
| case '@': // Annotation |
| // TODO: isRuntimeVisible ?????????? |
| // FIXME |
| return new AnnotationElementValueGen(ANNOTATION, |
| new AnnotationEntryGen(AnnotationEntry.read(dis, cpGen |
| .getConstantPool(), true), cpGen, false), cpGen); |
| case '[': // Array |
| final int numArrayVals = dis.readUnsignedShort(); |
| final ElementValue[] evalues = new ElementValue[numArrayVals]; |
| for (int j = 0; j < numArrayVals; j++) |
| { |
| evalues[j] = ElementValue.readElementValue(dis, cpGen |
| .getConstantPool()); |
| } |
| return new ArrayElementValueGen(ARRAY, evalues, cpGen); |
| default: |
| throw new RuntimeException("Unexpected element value kind in annotation: " + type); |
| } |
| } |
| |
| protected ConstantPoolGen getConstantPool() |
| { |
| return cpGen; |
| } |
| |
| /** |
| * Creates an (modifiable) ElementValueGen copy of an (immutable) |
| * ElementValue - constant pool is assumed correct. |
| */ |
| public static ElementValueGen copy(final ElementValue value, |
| final ConstantPoolGen cpool, final 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 SimpleElementValueGen((SimpleElementValue) value, cpool, |
| copyPoolEntries); |
| case 'e': // Enum constant |
| return new EnumElementValueGen((EnumElementValue) value, cpool, |
| copyPoolEntries); |
| case '@': // Annotation |
| return new AnnotationElementValueGen( |
| (AnnotationElementValue) value, cpool, copyPoolEntries); |
| case '[': // Array |
| return new ArrayElementValueGen((ArrayElementValue) value, cpool, |
| copyPoolEntries); |
| case 'c': // Class |
| return new ClassElementValueGen((ClassElementValue) value, cpool, |
| copyPoolEntries); |
| default: |
| throw new RuntimeException("Not implemented yet! (" + value.getElementValueType() + ")"); |
| } |
| } |
| } |