ImmutableDebugItem.java revision 9c60ef2a1034e9f8d111907e4fceb3a4ca2e7e69 
1/*
2 * Copyright 2012, Google Inc.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are
7 * met:
8 *
9 *     * Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 *     * Redistributions in binary form must reproduce the above
12 * copyright notice, this list of conditions and the following disclaimer
13 * in the documentation and/or other materials provided with the
14 * distribution.
15 *     * Neither the name of Google Inc. nor the names of its
16 * contributors may be used to endorse or promote products derived from
17 * this software without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
20 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
21 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
22 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
23 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
24 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
25 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 */
31
32package org.jf.dexlib2.immutable.debug;
33
34import com.google.common.collect.ImmutableList;
35import org.jf.dexlib2.DebugItemType;
36import org.jf.dexlib2.iface.debug.*;
37import org.jf.dexlib2.iface.instruction.Instruction;
38import org.jf.util.ExceptionWithContext;
39import org.jf.util.ImmutableListConverter;
40
41import javax.annotation.Nonnull;
42import javax.annotation.Nullable;
43import java.util.List;
44
45public abstract class ImmutableDebugItem implements DebugItem {
46    public final int codeAddress;
47
48    public ImmutableDebugItem(int codeAddress) {
49        this.codeAddress = codeAddress;
50    }
51
52    @Nonnull
53    public static ImmutableDebugItem of(DebugItem debugItem) {
54        if (debugItem instanceof ImmutableDebugItem) {
55            return (ImmutableDebugItem)debugItem;
56        }
57        switch (debugItem.getDebugItemType()) {
58            case DebugItemType.START_LOCAL:
59                return ImmutableStartLocal.of((StartLocal)debugItem);
60            case DebugItemType.END_LOCAL:
61                return ImmutableEndLocal.of((EndLocal)debugItem);
62            case DebugItemType.RESTART_LOCAL:
63                return ImmutableRestartLocal.of((RestartLocal)debugItem);
64            case DebugItemType.PROLOGUE_END:
65                return ImmutablePrologueEnd.of((PrologueEnd)debugItem);
66            case DebugItemType.EPILOGUE_BEGIN:
67                return ImmutableEpilogueBegin.of((EpilogueBegin)debugItem);
68            case DebugItemType.SET_SOURCE_FILE:
69                return ImmutableSetSourceFile.of((SetSourceFile)debugItem);
70            case DebugItemType.LINE_NUMBER:
71                return ImmutableLineNumber.of((LineNumber)debugItem);
72            default:
73                throw new ExceptionWithContext("Invalid debug item type: %d", debugItem.getDebugItemType());
74        }
75    }
76
77    @Override public int getCodeAddress() { return codeAddress; }
78
79    @Nonnull
80    public static ImmutableList<ImmutableDebugItem> immutableListOf(@Nullable List<? extends DebugItem> list) {
81        return CONVERTER.convert(list);
82    }
83
84    private static final ImmutableListConverter<ImmutableDebugItem, DebugItem> CONVERTER =
85            new ImmutableListConverter<ImmutableDebugItem, DebugItem>() {
86                @Override
87                protected boolean isImmutable(DebugItem item) {
88                    return item instanceof ImmutableDebugItem;
89                }
90
91                @Nonnull
92                @Override
93                protected ImmutableDebugItem makeImmutable(DebugItem item) {
94                    return ImmutableDebugItem.of(item);
95                }
96            };
97}
98