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