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 * Copyright 2013, Google Inc.
 * All rights reserved.
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 * modification, are permitted provided that the following conditions are
 * met:
 *
 *     * Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
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 * copyright notice, this list of conditions and the following disclaimer
 * in the documentation and/or other materials provided with the
 * distribution.
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 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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package org.jf.dexlib2.dexbacked.instruction;

import org.jf.dexlib2.Opcode;
import org.jf.dexlib2.dexbacked.DexBackedDexFile;
import org.jf.dexlib2.iface.instruction.formats.Instruction35ms;
import org.jf.util.NibbleUtils;

import javax.annotation.Nonnull;

public class DexBackedInstruction35ms extends DexBackedInstruction implements Instruction35ms {
    public DexBackedInstruction35ms(@Nonnull DexBackedDexFile dexFile,
                                    @Nonnull Opcode opcode,
                                    int instructionStart) {
        super(dexFile, opcode, instructionStart);
    }

    @Override public int getRegisterCount() {
        return NibbleUtils.extractHighUnsignedNibble(dexFile.readUbyte(instructionStart + 1));
    }

    @Override
    public int getRegisterC() {
        return NibbleUtils.extractLowUnsignedNibble(dexFile.readUbyte(instructionStart + 4));
    }

    @Override
    public int getRegisterD() {
        return NibbleUtils.extractHighUnsignedNibble(dexFile.readUbyte(instructionStart + 4));
    }

    @Override
    public int getRegisterE() {
        return NibbleUtils.extractLowUnsignedNibble(dexFile.readUbyte(instructionStart + 5));
    }

    @Override
    public int getRegisterF() {
        return NibbleUtils.extractHighUnsignedNibble(dexFile.readUbyte(instructionStart + 5));
    }

    @Override
    public int getRegisterG() {
        return NibbleUtils.extractLowUnsignedNibble(dexFile.readUbyte(instructionStart + 1));
    }

    @Override
    public int getVtableIndex() {
        return dexFile.readUshort(instructionStart + 2);
    }
}