CatchMethodItem.java revision 16a911620ccf7b530b873fb71cf13e8dcb88ad28 
1/*
2 * [The "BSD licence"]
3 * Copyright (c) 2009 Ben Gruver
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 *    notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 *    notice, this list of conditions and the following disclaimer in the
13 *    documentation and/or other materials provided with the distribution.
14 * 3. The name of the author may not be used to endorse or promote products
15 *    derived from this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29package org.jf.baksmali.Adaptors;
30
31import org.jf.dexlib.TypeIdItem;
32import org.jf.baksmali.Adaptors.Reference.TypeReference;
33import org.antlr.stringtemplate.StringTemplateGroup;
34import org.antlr.stringtemplate.StringTemplate;
35
36public class CatchMethodItem extends MethodItem {
37    private final StringTemplateGroup stg;
38    private final TypeIdItem exceptionType;
39
40    private final LabelMethodItem tryStartLabel;
41    private final LabelMethodItem tryEndLabel;
42    private final LabelMethodItem handlerLabel;
43
44    public CatchMethodItem(MethodDefinition.LabelCache labelCache, int codeAddress, StringTemplateGroup stg,
45                           TypeIdItem exceptionType, int startAddress, int endAddress, int handlerAddress) {
46        super(codeAddress);
47        this.stg = stg;
48        this.exceptionType = exceptionType;
49
50        tryStartLabel = labelCache.internLabel(new LabelMethodItem(startAddress, stg, "try_start_"));
51        tryStartLabel.setUncommented();
52        //use the address from the last covered instruction, but make the label
53        //name refer to the address of the next instruction
54        tryEndLabel = labelCache.internLabel(new EndTryLabelMethodItem(codeAddress, stg, endAddress));
55        tryEndLabel.setUncommented();
56
57        if (exceptionType == null) {
58            handlerLabel = labelCache.internLabel(new LabelMethodItem(handlerAddress, stg, "catchall_"));
59        } else {
60            handlerLabel = labelCache.internLabel(new LabelMethodItem(handlerAddress, stg, "catch_"));
61        }
62        handlerLabel.setUncommented();
63    }
64
65    public LabelMethodItem getTryStartLabel() {
66        return tryStartLabel;
67    }
68
69    public LabelMethodItem getTryEndLabel() {
70        return tryEndLabel;
71    }
72
73    public LabelMethodItem getHandlerLabel() {
74        return handlerLabel;
75    }
76
77    public int getSortOrder() {
78        //sort after instruction and end_try label
79        return 102;
80    }
81
82    protected String getTemplateName() {
83        return "Catch";
84    }
85
86    @Override
87    public String toString() {
88        StringTemplate template = stg.getInstanceOf(getTemplateName());
89        if (exceptionType != null) {
90            template.setAttribute("ExceptionType", TypeReference.createTemplate(stg, exceptionType));
91        }
92        template.setAttribute("StartLabel", tryStartLabel);
93        template.setAttribute("EndLabel", tryEndLabel);
94        template.setAttribute("HandlerLabel", handlerLabel);
95        return template.toString();
96    }
97}
98