| 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 | * A NameAndType CP Info
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| 24 | *
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| 25 | */
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| 26 | public class NameAndTypeCPInfo extends ConstantPoolEntry {
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| 27 |
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| 28 | /** Constructor. */
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| 29 | public NameAndTypeCPInfo() {
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| 30 | super(CONSTANT_NAMEANDTYPE, 1);
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| 31 | }
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| 32 |
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| 33 | /**
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| 34 | * read a constant pool entry from a class stream.
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| 35 | *
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| 36 | * @param cpStream the DataInputStream which contains the constant pool
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| 37 | * entry to be read.
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| 38 | * @exception IOException if there is a problem reading the entry from
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| 39 | * the stream.
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| 40 | */
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| 41 | public void read(DataInputStream cpStream) throws IOException {
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| 42 | nameIndex = cpStream.readUnsignedShort();
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| 43 | descriptorIndex = cpStream.readUnsignedShort();
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| 44 | }
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| 45 |
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| 46 | /**
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| 47 | * Print a readable version of the constant pool entry.
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| 48 | *
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| 49 | * @return the string representation of this constant pool entry.
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| 50 | */
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| 51 | public String toString() {
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| 52 | String value;
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| 53 |
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| 54 | if (isResolved()) {
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| 55 | value = "Name = " + name + ", type = " + type;
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| 56 | } else {
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| 57 | value = "Name index = " + nameIndex
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| 58 | + ", descriptor index = " + descriptorIndex;
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| 59 | }
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| 60 |
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| 61 | return value;
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| 62 | }
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| 63 |
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| 64 | /**
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| 65 | * Resolve this constant pool entry with respect to its dependents in
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| 66 | * the constant pool.
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| 67 | *
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| 68 | * @param constantPool the constant pool of which this entry is a member
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| 69 | * and against which this entry is to be resolved.
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| 70 | */
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| 71 | public void resolve(ConstantPool constantPool) {
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| 72 | name = ((Utf8CPInfo) constantPool.getEntry(nameIndex)).getValue();
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| 73 | type = ((Utf8CPInfo) constantPool.getEntry(descriptorIndex)).getValue();
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| 74 |
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| 75 | super.resolve(constantPool);
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| 76 | }
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| 77 |
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| 78 | /**
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| 79 | * Get the name component of this entry
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| 80 | *
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| 81 | * @return the name of this name and type entry
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| 82 | */
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| 83 | public String getName() {
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| 84 | return name;
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| 85 | }
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| 86 |
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| 87 | /**
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| 88 | * Get the type signature of this entry
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| 89 | *
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| 90 | * @return the type signature of this entry
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| 91 | */
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| 92 | public String getType() {
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| 93 | return type;
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| 94 | }
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| 95 |
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| 96 | /** the name component of this entry */
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| 97 | private String name;
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| 98 | /** the type component of this entry */
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| 99 | private String type;
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| 100 | /**
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| 101 | * the index into the constant pool at which the name component's string
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| 102 | * value is stored
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| 103 | */
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| 104 | private int nameIndex;
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| 105 | /**
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| 106 | * the index into the constant pool where the type descriptor string is
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| 107 | * stored.
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| 108 | */
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| 109 | private int descriptorIndex;
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| 110 | }
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| 111 |
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