1 | /*
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2 | * Copyright 2000-2004 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 String Constant Pool Entry. The String info contains an index into the
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24 | * constant pool where a UTF8 string is stored.
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25 | *
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26 | */
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27 | public class StringCPInfo extends ConstantCPInfo {
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28 |
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29 | /** Constructor. */
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30 | public StringCPInfo() {
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31 | super(CONSTANT_STRING, 1);
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32 | }
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33 |
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34 | /**
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35 | * read a constant pool entry from a class stream.
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36 | *
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37 | * @param cpStream the DataInputStream which contains the constant pool
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38 | * entry to be read.
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39 | * @exception IOException if there is a problem reading the entry from
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40 | * the stream.
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41 | */
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42 | public void read(DataInputStream cpStream) throws IOException {
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43 | index = cpStream.readUnsignedShort();
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44 |
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45 | setValue("unresolved");
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46 | }
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47 |
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48 | /**
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49 | * Print a readable version of the constant pool entry.
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50 | *
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51 | * @return the string representation of this constant pool entry.
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52 | */
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53 | public String toString() {
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54 | return "String Constant Pool Entry for "
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55 | + getValue() + "[" + index + "]";
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56 | }
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57 |
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58 | /**
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59 | * Resolve this constant pool entry with respect to its dependents in
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60 | * the constant pool.
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61 | *
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62 | * @param constantPool the constant pool of which this entry is a member
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63 | * and against which this entry is to be resolved.
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64 | */
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65 | public void resolve(ConstantPool constantPool) {
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66 | setValue(((Utf8CPInfo) constantPool.getEntry(index)).getValue());
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67 | super.resolve(constantPool);
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68 | }
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69 |
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70 | /** the index into the constant pool containing the string's content */
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71 | private int index;
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72 | }
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73 |
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