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 static CPUTF8 rvaUTF8;
043    private static CPUTF8 riaUTF8;
044
045    private static CPUTF8 rvpaUTF8;
046    private static CPUTF8 ripaUTF8;
047    public static void setRiaAttributeName(final CPUTF8 cpUTF8Value) {
048        riaUTF8 = cpUTF8Value;
049    }
050    public static void setRipaAttributeName(final CPUTF8 cpUTF8Value) {
051        ripaUTF8 = cpUTF8Value;
052    }
053
054    public static void setRvaAttributeName(final CPUTF8 cpUTF8Value) {
055        rvaUTF8 = cpUTF8Value;
056    }
057
058    public static void setRvpaAttributeName(final CPUTF8 cpUTF8Value) {
059        rvpaUTF8 = cpUTF8Value;
060    }
061
062    private final String type;
063
064    private final CpBands cpBands;
065
066    private List<Attribute> attributes;
067
068    public int[] param_NB;
069
070    public int[] anno_N;
071    public CPUTF8[][] type_RS;
072    public int[][] pair_N;
073    public CPUTF8[] name_RU;
074    public int[] T;
075    public CPInteger[] caseI_KI;
076    public CPDouble[] caseD_KD;
077    public CPFloat[] caseF_KF;
078    public CPLong[] caseJ_KJ;
079    public CPUTF8[] casec_RS;
080    public String[] caseet_RS;
081    public String[] caseec_RU;
082    public CPUTF8[] cases_RU;
083    public int[] casearray_N;
084    public CPUTF8[] nesttype_RS;
085    public int[] nestpair_N;
086    public CPUTF8[] nestname_RU;
087    private int caseI_KI_Index;
088
089    private int caseD_KD_Index;
090
091    private int caseF_KF_Index;
092
093    private int caseJ_KJ_Index;
094
095    private int casec_RS_Index;
096
097    private int caseet_RS_Index;
098
099    private int caseec_RU_Index;
100
101    private int cases_RU_Index;
102
103    private int casearray_N_Index;
104
105    private int T_index;
106
107    private int nesttype_RS_Index;
108
109    private int nestpair_N_Index;
110
111    private Iterator<CPUTF8> nestname_RU_Iterator;
112
113    private int anno_N_Index;
114
115    private int pair_N_Index;
116
117    public MetadataBandGroup(final String type, final CpBands cpBands) {
118        this.type = type;
119        this.cpBands = cpBands;
120    }
121
122    private Annotation getAnnotation(final CPUTF8 type, final int pairCount, final Iterator<CPUTF8> namesIterator) {
123        final CPUTF8[] elementNames = new CPUTF8[pairCount];
124        final ElementValue[] elementValues = new ElementValue[pairCount];
125        for (int j = 0; j < elementNames.length; j++) {
126            elementNames[j] = namesIterator.next();
127            final int t = T[T_index++];
128            elementValues[j] = new ElementValue(t, getNextValue(t));
129        }
130        return new Annotation(pairCount, type, elementNames, elementValues);
131    }
132
133    private Attribute getAttribute(final int numAnnotations, final CPUTF8[] types, final int[] pairCounts,
134        final Iterator<CPUTF8> namesIterator) {
135        final Annotation[] annotations = new Annotation[numAnnotations];
136        Arrays.setAll(annotations, i -> getAnnotation(types[i], pairCounts[i], namesIterator));
137        return new RuntimeVisibleorInvisibleAnnotationsAttribute(type.equals("RVA") ? rvaUTF8 : riaUTF8, annotations);
138    }
139
140    public List<Attribute> getAttributes() {
141        // TODO: Optimize iterators!
142        if (attributes == null) {
143            attributes = new ArrayList<>();
144            if (name_RU != null) {
145                final Iterator<CPUTF8> name_RU_Iterator = Arrays.asList(name_RU).iterator();
146                if (!type.equals("AD")) {
147                    T_index = 0;
148                }
149                caseI_KI_Index = 0;
150                caseD_KD_Index = 0;
151                caseF_KF_Index = 0;
152                caseJ_KJ_Index = 0;
153                casec_RS_Index = 0;
154                caseet_RS_Index = 0;
155                caseec_RU_Index = 0;
156                cases_RU_Index = 0;
157                casearray_N_Index = 0;
158                nesttype_RS_Index = 0;
159                nestpair_N_Index = 0;
160                nestname_RU_Iterator = Arrays.asList(nestname_RU).iterator();
161                if (type.equals("RVA") || type.equals("RIA")) {
162                    for (int i = 0; i < anno_N.length; i++) {
163                        attributes.add(getAttribute(anno_N[i], type_RS[i], pair_N[i], name_RU_Iterator));
164                    }
165                } else if (type.equals("RVPA") || type.equals("RIPA")) {
166                    anno_N_Index = 0;
167                    pair_N_Index = 0;
168                    for (final int element : param_NB) {
169                        attributes.add(getParameterAttribute(element, name_RU_Iterator));
170                    }
171                }
172            } else if (type.equals("AD")) {
173                for (final int element : T) {
174                    attributes.add(new AnnotationDefaultAttribute(new ElementValue(element, getNextValue(element))));
175                }
176            }
177        }
178        return attributes;
179    }
180
181    private Object getNextValue(final int t) {
182        switch (t) {
183        case 'B':
184        case 'C':
185        case 'I':
186        case 'S':
187        case 'Z':
188            return caseI_KI[caseI_KI_Index++];
189        case 'D':
190            return caseD_KD[caseD_KD_Index++];
191        case 'F':
192            return caseF_KF[caseF_KF_Index++];
193        case 'J':
194            return caseJ_KJ[caseJ_KJ_Index++];
195        case 'c':
196            return casec_RS[casec_RS_Index++];
197        case 'e':
198            // TODO: check this - it may not work if the first string already
199            // has a colon in it
200            final String enumString = caseet_RS[caseet_RS_Index++] + ":" + caseec_RU[caseec_RU_Index++];
201            return cpBands.cpNameAndTypeValue(enumString);
202        case 's':
203            return cases_RU[cases_RU_Index++];
204        case '[':
205            final int arraySize = casearray_N[casearray_N_Index++];
206            final ElementValue[] nestedArray = new ElementValue[arraySize];
207            for (int i = 0; i < arraySize; i++) {
208                final int nextT = T[T_index++];
209                nestedArray[i] = new ElementValue(nextT, getNextValue(nextT));
210            }
211            return nestedArray;
212        case '@':
213            final CPUTF8 type = nesttype_RS[nesttype_RS_Index++];
214            final int numPairs = nestpair_N[nestpair_N_Index++];
215
216            return getAnnotation(type, numPairs, nestname_RU_Iterator);
217        }
218        return null;
219    }
220
221    private Attribute getParameterAttribute(final int numParameters, final Iterator<CPUTF8> namesIterator) {
222        final ParameterAnnotation[] parameterAnnotations = new ParameterAnnotation[numParameters];
223        for (int i = 0; i < numParameters; i++) {
224            final int numAnnotations = anno_N[anno_N_Index++];
225            final int[] pairCounts = pair_N[pair_N_Index++];
226            final Annotation[] annotations = new Annotation[numAnnotations];
227            Arrays.setAll(annotations, j -> getAnnotation(type_RS[anno_N_Index - 1][j], pairCounts[j], namesIterator));
228            parameterAnnotations[i] = new ParameterAnnotation(annotations);
229        }
230        return new RuntimeVisibleorInvisibleParameterAnnotationsAttribute(type.equals("RVPA") ? rvpaUTF8 : ripaUTF8,
231            parameterAnnotations);
232    }
233
234}