BuilderTryBlock.java revision 5ff4ee9a3fc898dbe9a67386e984f14c21338391 
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
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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.ExceptionHandler;
37import org.jf.dexlib2.iface.reference.TypeReference;
38
39import javax.annotation.Nonnull;
40import javax.annotation.Nullable;
41import java.util.List;
42
43class BuilderTryBlock extends BaseTryBlock<ExceptionHandler> {
44    // We only ever have one exception handler per try block. They are later merged as needed in TryListBuilder
45    @Nonnull public final ExceptionHandler exceptionHandler;
46    @Nonnull public final Label start;
47    // The end location is exclusive, it should point to the codeAddress of the instruction immediately after the last
48    // covered instruction.
49    @Nonnull public final Label end;
50
51    public BuilderTryBlock(@Nonnull Label start, @Nonnull Label end, @Nullable String exceptionType,
52                           @Nonnull Label handler) {
53        this.start = start;
54        this.end = end;
55        this.exceptionHandler = BuilderExceptionHandler.newExceptionHandler(exceptionType, handler);
56    }
57
58    public BuilderTryBlock(@Nonnull Label start, @Nonnull Label end, @Nullable TypeReference exceptionType,
59                           @Nonnull Label handler) {
60        this.start = start;
61        this.end = end;
62        this.exceptionHandler = BuilderExceptionHandler.newExceptionHandler(exceptionType, handler);
63    }
64
65    public BuilderTryBlock(@Nonnull Label start, @Nonnull Label end, @Nonnull Label handler) {
66        this.start = start;
67        this.end = end;
68        this.exceptionHandler = BuilderExceptionHandler.newExceptionHandler(handler);
69    }
70
71    @Override public int getStartCodeAddress() {
72        return start.getCodeAddress();
73    }
74
75    @Override public int getCodeUnitCount() {
76        return end.getCodeAddress() - start.getCodeAddress();
77    }
78
79    @Nonnull @Override public List<? extends ExceptionHandler> getExceptionHandlers() {
80        return ImmutableList.of(exceptionHandler);
81    }
82}
83