001/*
002 *  Licensed to the Apache Software Foundation (ASF) under one or more
003 *  contributor license agreements.  See the NOTICE file distributed with
004 *  this work for additional information regarding copyright ownership.
005 *  The ASF licenses this file to You under the Apache License, Version 2.0
006 *  (the "License"); you may not use this file except in compliance with
007 *  the License.  You may obtain a copy of the License at
008 *
009 *     http://www.apache.org/licenses/LICENSE-2.0
010 *
011 *  Unless required by applicable law or agreed to in writing, software
012 *  distributed under the License is distributed on an "AS IS" BASIS,
013 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 *  See the License for the specific language governing permissions and
015 *  limitations under the License.
016 */
017package org.apache.commons.compress.harmony.unpack200;
018
019import java.util.ArrayList;
020import java.util.Arrays;
021import java.util.Iterator;
022import java.util.List;
023
024import org.apache.commons.compress.harmony.unpack200.bytecode.AnnotationDefaultAttribute;
025import org.apache.commons.compress.harmony.unpack200.bytecode.AnnotationsAttribute.Annotation;
026import org.apache.commons.compress.harmony.unpack200.bytecode.AnnotationsAttribute.ElementValue;
027import org.apache.commons.compress.harmony.unpack200.bytecode.Attribute;
028import org.apache.commons.compress.harmony.unpack200.bytecode.CPDouble;
029import org.apache.commons.compress.harmony.unpack200.bytecode.CPFloat;
030import org.apache.commons.compress.harmony.unpack200.bytecode.CPInteger;
031import org.apache.commons.compress.harmony.unpack200.bytecode.CPLong;
032import org.apache.commons.compress.harmony.unpack200.bytecode.CPUTF8;
033import org.apache.commons.compress.harmony.unpack200.bytecode.RuntimeVisibleorInvisibleAnnotationsAttribute;
034import org.apache.commons.compress.harmony.unpack200.bytecode.RuntimeVisibleorInvisibleParameterAnnotationsAttribute;
035import org.apache.commons.compress.harmony.unpack200.bytecode.RuntimeVisibleorInvisibleParameterAnnotationsAttribute.ParameterAnnotation;
036
037/**
038 * A group of metadata bands, such as class_RVA_bands, method_AD_bands etc.
039 */
040public class MetadataBandGroup {
041
042    private final String type;
043    private final CpBands cpBands;
044
045    private static CPUTF8 rvaUTF8;
046    private static CPUTF8 riaUTF8;
047    private static CPUTF8 rvpaUTF8;
048    private static CPUTF8 ripaUTF8;
049
050    public static void setRvaAttributeName(final CPUTF8 cpUTF8Value) {
051        rvaUTF8 = cpUTF8Value;
052    }
053
054    public static void setRiaAttributeName(final CPUTF8 cpUTF8Value) {
055        riaUTF8 = cpUTF8Value;
056    }
057
058    public static void setRvpaAttributeName(final CPUTF8 cpUTF8Value) {
059        rvpaUTF8 = cpUTF8Value;
060    }
061
062    public static void setRipaAttributeName(final CPUTF8 cpUTF8Value) {
063        ripaUTF8 = cpUTF8Value;
064    }
065
066    public MetadataBandGroup(final String type, final CpBands cpBands) {
067        this.type = type;
068        this.cpBands = cpBands;
069    }
070
071    private List attributes;
072
073    public int[] param_NB;
074    public int[] anno_N;
075    public CPUTF8[][] type_RS;
076    public int[][] pair_N;
077    public CPUTF8[] name_RU;
078    public int[] T;
079    public CPInteger[] caseI_KI;
080    public CPDouble[] caseD_KD;
081    public CPFloat[] caseF_KF;
082    public CPLong[] caseJ_KJ;
083    public CPUTF8[] casec_RS;
084    public String[] caseet_RS;
085    public String[] caseec_RU;
086    public CPUTF8[] cases_RU;
087    public int[] casearray_N;
088    public CPUTF8[] nesttype_RS;
089    public int[] nestpair_N;
090    public CPUTF8[] nestname_RU;
091
092    private int caseI_KI_Index;
093
094    private int caseD_KD_Index;
095
096    private int caseF_KF_Index;
097
098    private int caseJ_KJ_Index;
099
100    private int casec_RS_Index;
101
102    private int caseet_RS_Index;
103
104    private int caseec_RU_Index;
105
106    private int cases_RU_Index;
107
108    private int casearray_N_Index;
109
110    private int T_index;
111
112    private int nesttype_RS_Index;
113
114    private int nestpair_N_Index;
115
116    private Iterator nestname_RU_Iterator;
117
118    private int anno_N_Index;
119
120    private int pair_N_Index;
121
122    public List getAttributes() {
123        // TODO: Optimize iterators!
124        if (attributes == null) {
125            attributes = new ArrayList();
126            if (name_RU != null) {
127                final Iterator name_RU_Iterator = Arrays.asList(name_RU).iterator();
128                if (!type.equals("AD")) {
129                    T_index = 0;
130                }
131                caseI_KI_Index = 0;
132                caseD_KD_Index = 0;
133                caseF_KF_Index = 0;
134                caseJ_KJ_Index = 0;
135                casec_RS_Index = 0;
136                caseet_RS_Index = 0;
137                caseec_RU_Index = 0;
138                cases_RU_Index = 0;
139                casearray_N_Index = 0;
140                nesttype_RS_Index = 0;
141                nestpair_N_Index = 0;
142                nestname_RU_Iterator = Arrays.asList(nestname_RU).iterator();
143                if (type.equals("RVA") || type.equals("RIA")) {
144                    for (int i = 0; i < anno_N.length; i++) {
145                        attributes.add(getAttribute(anno_N[i], type_RS[i], pair_N[i], name_RU_Iterator));
146                    }
147                } else if (type.equals("RVPA") || type.equals("RIPA")) {
148                    anno_N_Index = 0;
149                    pair_N_Index = 0;
150                    for (int i = 0; i < param_NB.length; i++) {
151                        attributes.add(getParameterAttribute(param_NB[i], name_RU_Iterator));
152                    }
153                }
154            } else if (type.equals("AD")) {
155                for (int i = 0; i < T.length; i++) {
156                    attributes.add(new AnnotationDefaultAttribute(new ElementValue(T[i], getNextValue(T[i]))));
157                }
158            }
159        }
160        return attributes;
161    }
162
163    private Attribute getAttribute(final int numAnnotations, final CPUTF8[] types, final int[] pairCounts,
164        final Iterator namesIterator) {
165        final Annotation[] annotations = new Annotation[numAnnotations];
166        for (int i = 0; i < numAnnotations; i++) {
167            annotations[i] = getAnnotation(types[i], pairCounts[i], namesIterator);
168        }
169        return new RuntimeVisibleorInvisibleAnnotationsAttribute(type.equals("RVA") ? rvaUTF8 : riaUTF8, annotations);
170    }
171
172    private Attribute getParameterAttribute(final int numParameters, final Iterator namesIterator) {
173        final ParameterAnnotation[] parameter_annotations = new ParameterAnnotation[numParameters];
174        for (int i = 0; i < numParameters; i++) {
175            final int numAnnotations = anno_N[anno_N_Index++];
176            final int[] pairCounts = pair_N[pair_N_Index++];
177            final Annotation[] annotations = new Annotation[numAnnotations];
178            for (int j = 0; j < annotations.length; j++) {
179                annotations[j] = getAnnotation(type_RS[anno_N_Index - 1][j], pairCounts[j], namesIterator);
180            }
181            parameter_annotations[i] = new ParameterAnnotation(annotations);
182        }
183        return new RuntimeVisibleorInvisibleParameterAnnotationsAttribute(type.equals("RVPA") ? rvpaUTF8 : ripaUTF8,
184            parameter_annotations);
185    }
186
187    private Annotation getAnnotation(final CPUTF8 type, final int pairCount, final Iterator namesIterator) {
188        final CPUTF8[] elementNames = new CPUTF8[pairCount];
189        final ElementValue[] elementValues = new ElementValue[pairCount];
190        for (int j = 0; j < elementNames.length; j++) {
191            elementNames[j] = (CPUTF8) namesIterator.next();
192            final int t = T[T_index++];
193            elementValues[j] = new ElementValue(t, getNextValue(t));
194        }
195        return new Annotation(pairCount, type, elementNames, elementValues);
196    }
197
198    private Object getNextValue(final int t) {
199        switch (t) {
200        case 'B':
201        case 'C':
202        case 'I':
203        case 'S':
204        case 'Z':
205            return caseI_KI[caseI_KI_Index++];
206        case 'D':
207            return caseD_KD[caseD_KD_Index++];
208        case 'F':
209            return caseF_KF[caseF_KF_Index++];
210        case 'J':
211            return caseJ_KJ[caseJ_KJ_Index++];
212        case 'c':
213            return casec_RS[casec_RS_Index++];
214        case 'e':
215            // TODO: check this - it may not work if the first string already
216            // has a colon in it
217            final String enumString = caseet_RS[caseet_RS_Index++] + ":" + caseec_RU[caseec_RU_Index++];
218            return cpBands.cpNameAndTypeValue(enumString);
219        case 's':
220            return cases_RU[cases_RU_Index++];
221        case '[':
222            final int arraySize = casearray_N[casearray_N_Index++];
223            final ElementValue[] nestedArray = new ElementValue[arraySize];
224            for (int i = 0; i < arraySize; i++) {
225                final int nextT = T[T_index++];
226                nestedArray[i] = new ElementValue(nextT, getNextValue(nextT));
227            }
228            return nestedArray;
229        case '@':
230            final CPUTF8 type = nesttype_RS[nesttype_RS_Index++];
231            final int numPairs = nestpair_N[nestpair_N_Index++];
232
233            return getAnnotation(type, numPairs, nestname_RU_Iterator);
234        }
235        return null;
236    }
237
238}