1/*
2 * Copyright 2013, 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.builder;
33
34import com.google.common.collect.ImmutableList;
35import org.jf.dexlib2.base.BaseTryBlock;
36import org.jf.dexlib2.iface.reference.TypeReference;
37
38import javax.annotation.Nonnull;
39import javax.annotation.Nullable;
40import java.util.List;
41
42public class BuilderTryBlock extends BaseTryBlock<BuilderExceptionHandler> {
43    // We only ever have one exception handler per try block. They are later merged as needed in TryListBuilder
44    @Nonnull public final BuilderExceptionHandler exceptionHandler;
45    @Nonnull public final Label start;
46    // The end location is exclusive, it should point to the codeAddress of the instruction immediately after the last
47    // covered instruction.
48    @Nonnull public final Label end;
49
50    public BuilderTryBlock(@Nonnull Label start, @Nonnull Label end, @Nullable String exceptionType,
51                           @Nonnull Label handler) {
52        this.start = start;
53        this.end = end;
54        this.exceptionHandler = BuilderExceptionHandler.newExceptionHandler(exceptionType, handler);
55    }
56
57    public BuilderTryBlock(@Nonnull Label start, @Nonnull Label end, @Nullable TypeReference exceptionType,
58                           @Nonnull Label handler) {
59        this.start = start;
60        this.end = end;
61        this.exceptionHandler = BuilderExceptionHandler.newExceptionHandler(exceptionType, handler);
62    }
63
64    public BuilderTryBlock(@Nonnull Label start, @Nonnull Label end, @Nonnull Label handler) {
65        this.start = start;
66        this.end = end;
67        this.exceptionHandler = BuilderExceptionHandler.newExceptionHandler(handler);
68    }
69
70    @Override public int getStartCodeAddress() {
71        return start.getCodeAddress();
72    }
73
74    @Override public int getCodeUnitCount() {
75        return end.getCodeAddress() - start.getCodeAddress();
76    }
77
78    @Nonnull @Override public List<? extends BuilderExceptionHandler> getExceptionHandlers() {
79        return ImmutableList.of(exceptionHandler);
80    }
81}
82