[14627] | 1 | /*
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| 2 | * Copyright 2000-2002,2004 The Apache Software Foundation
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| 3 | *
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| 4 | * Licensed under the Apache License, Version 2.0 (the "License");
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| 5 | * you may not use this file except in compliance with the License.
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| 6 | * You may obtain a copy of the License at
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| 7 | *
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| 8 | * http://www.apache.org/licenses/LICENSE-2.0
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| 9 | *
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| 10 | * Unless required by applicable law or agreed to in writing, software
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| 11 | * distributed under the License is distributed on an "AS IS" BASIS,
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| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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| 13 | * See the License for the specific language governing permissions and
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| 14 | * limitations under the License.
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| 15 | *
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| 16 | */
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| 17 | package org.apache.tools.ant.taskdefs.optional.depend.constantpool;
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| 18 |
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| 19 | import java.io.DataInputStream;
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| 20 | import java.io.IOException;
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| 21 |
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| 22 | /**
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| 23 | * The constant pool entry which stores class information.
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| 24 | *
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| 25 | */
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| 26 | public class ClassCPInfo extends ConstantPoolEntry {
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| 27 |
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| 28 | /**
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| 29 | * The class' name. This will be only valid if the entry has been
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| 30 | * resolved against the constant pool.
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| 31 | */
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| 32 | private String className;
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| 33 |
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| 34 | /**
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| 35 | * The index into the constant pool where this class' name is stored. If
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| 36 | * the class name is changed, this entry is invalid until this entry is
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| 37 | * connected to a constant pool.
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| 38 | */
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| 39 | private int index;
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| 40 |
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| 41 | /**
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| 42 | * Constructor. Sets the tag value for this entry to type Class
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| 43 | */
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| 44 | public ClassCPInfo() {
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| 45 | super(CONSTANT_CLASS, 1);
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| 46 | }
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| 47 |
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| 48 | /**
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| 49 | * Read the entry from a stream.
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| 50 | *
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| 51 | * @param cpStream the stream containing the constant pool entry to be
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| 52 | * read.
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| 53 | * @exception IOException thrown if there is a problem reading the entry
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| 54 | * from the stream.
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| 55 | */
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| 56 | public void read(DataInputStream cpStream) throws IOException {
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| 57 | index = cpStream.readUnsignedShort();
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| 58 | className = "unresolved";
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| 59 | }
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| 60 |
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| 61 | /**
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| 62 | * Generate a string readable version of this entry
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| 63 | *
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| 64 | * @return string representation of this constant pool entry
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| 65 | */
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| 66 | public String toString() {
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| 67 | return "Class Constant Pool Entry for " + className + "[" + index + "]";
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| 68 | }
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| 69 |
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| 70 | /**
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| 71 | * Resolve this class info against the given constant pool.
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| 72 | *
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| 73 | * @param constantPool the constant pool with which to resolve the
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| 74 | * class.
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| 75 | */
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| 76 | public void resolve(ConstantPool constantPool) {
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| 77 | className = ((Utf8CPInfo) constantPool.getEntry(index)).getValue();
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| 78 |
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| 79 | super.resolve(constantPool);
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| 80 | }
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| 81 |
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| 82 | /**
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| 83 | * Get the class name of this entry.
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| 84 | *
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| 85 | * @return the class' name.
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| 86 | */
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| 87 | public String getClassName() {
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| 88 | return className;
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| 89 | }
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| 90 |
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| 91 | }
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| 92 |
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