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      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 
     32 package org.jf.dexlib2.immutable.instruction;
     33 
     34 import org.jf.dexlib2.Format;
     35 import org.jf.dexlib2.Opcode;
     36 import org.jf.dexlib2.iface.instruction.formats.Instruction35ms;
     37 import org.jf.dexlib2.util.Preconditions;
     38 
     39 import javax.annotation.Nonnull;
     40 
     41 public class ImmutableInstruction35ms extends ImmutableInstruction implements Instruction35ms {
     42     public static final Format FORMAT = Format.Format35ms;
     43 
     44     protected final int registerCount;
     45     protected final int registerC;
     46     protected final int registerD;
     47     protected final int registerE;
     48     protected final int registerF;
     49     protected final int registerG;
     50     protected final int vtableIndex;
     51 
     52     public ImmutableInstruction35ms(@Nonnull Opcode opcode,
     53                                     int registerCount,
     54                                     int registerC,
     55                                     int registerD,
     56                                     int registerE,
     57                                     int registerF,
     58                                     int registerG,
     59                                     int vtableIndex) {
     60         super(opcode);
     61         this.registerCount = Preconditions.check35cRegisterCount(registerCount);
     62         this.registerC = (registerCount>0) ? Preconditions.checkNibbleRegister(registerC) : 0;
     63         this.registerD = (registerCount>1) ? Preconditions.checkNibbleRegister(registerD) : 0;
     64         this.registerE = (registerCount>2) ? Preconditions.checkNibbleRegister(registerE) : 0;
     65         this.registerF = (registerCount>3) ? Preconditions.checkNibbleRegister(registerF) : 0;
     66         this.registerG = (registerCount>4) ? Preconditions.checkNibbleRegister(registerG) : 0;
     67         this.vtableIndex = Preconditions.checkVtableIndex(vtableIndex);
     68     }
     69 
     70     public static ImmutableInstruction35ms of(Instruction35ms instruction) {
     71         if (instruction instanceof ImmutableInstruction35ms) {
     72             return (ImmutableInstruction35ms)instruction;
     73         }
     74         return new ImmutableInstruction35ms(
     75                 instruction.getOpcode(),
     76                 instruction.getRegisterCount(),
     77                 instruction.getRegisterC(),
     78                 instruction.getRegisterD(),
     79                 instruction.getRegisterE(),
     80                 instruction.getRegisterF(),
     81                 instruction.getRegisterG(),
     82                 instruction.getVtableIndex());
     83     }
     84 
     85     @Override public int getRegisterCount() { return registerCount; }
     86     @Override public int getRegisterC() { return registerC; }
     87     @Override public int getRegisterD() { return registerD; }
     88     @Override public int getRegisterE() { return registerE; }
     89     @Override public int getRegisterF() { return registerF; }
     90     @Override public int getRegisterG() { return registerG; }
     91     @Override public int getVtableIndex() { return vtableIndex; }
     92 
     93     @Override public Format getFormat() { return FORMAT; }
     94 }
     95