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      1 /*
      2  * [The "BSD licence"]
      3  * Copyright (c) 2010 Ben Gruver (JesusFreke)
      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 
     29 package org.jf.baksmali.Adaptors;
     30 
     31 import org.jf.baksmali.baksmaliOptions;
     32 import org.jf.util.IndentingWriter;
     33 
     34 import javax.annotation.Nonnull;
     35 import java.io.IOException;
     36 
     37 public class LabelMethodItem extends MethodItem {
     38     private final baksmaliOptions options;
     39     private final String labelPrefix;
     40     private int labelSequence;
     41 
     42     public LabelMethodItem(@Nonnull baksmaliOptions options, int codeAddress, @Nonnull String labelPrefix) {
     43         super(codeAddress);
     44         this.options = options;
     45         this.labelPrefix = labelPrefix;
     46     }
     47 
     48     public double getSortOrder() {
     49         return 0;
     50     }
     51 
     52     public int compareTo(MethodItem methodItem) {
     53         int result = super.compareTo(methodItem);
     54 
     55         if (result == 0) {
     56             if (methodItem instanceof LabelMethodItem) {
     57                 result = labelPrefix.compareTo(((LabelMethodItem)methodItem).labelPrefix);
     58             }
     59         }
     60         return result;
     61     }
     62 
     63     public int hashCode() {
     64         //force it to call equals when two labels are at the same address
     65         return getCodeAddress();
     66     }
     67 
     68     public boolean equals(Object o) {
     69         if (!(o instanceof LabelMethodItem)) {
     70             return false;
     71         }
     72         return this.compareTo((MethodItem)o) == 0;
     73     }
     74 
     75 
     76     public boolean writeTo(IndentingWriter writer) throws IOException {
     77         writer.write(':');
     78         writer.write(labelPrefix);
     79         if (options.useSequentialLabels) {
     80             writer.printUnsignedLongAsHex(labelSequence);
     81         } else {
     82             writer.printUnsignedLongAsHex(this.getLabelAddress());
     83         }
     84         return true;
     85     }
     86 
     87     public String getLabelPrefix() {
     88         return labelPrefix;
     89     }
     90 
     91     public int getLabelAddress() {
     92         return this.getCodeAddress();
     93     }
     94 
     95     public int getLabelSequence() {
     96         return labelSequence;
     97     }
     98 
     99     public void setLabelSequence(int labelSequence) {
    100         this.labelSequence = labelSequence;
    101     }
    102 }
    103