dexlib2/src/main/java/org/jf/dexlib2/dexbacked/instruction/DexBackedInstruction22c.java

/*
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 * modification, are permitted provided that the following conditions are
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 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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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.dexbacked.reference.DexBackedReference;
import org.jf.dexlib2.iface.instruction.formats.Instruction22c;
import org.jf.dexlib2.iface.reference.Reference;
import org.jf.util.NibbleUtils;

import javax.annotation.Nonnull;

public class DexBackedInstruction22c extends DexBackedInstruction implements Instruction22c {
    public DexBackedInstruction22c(@Nonnull DexBackedDexFile dexFile,
                                   @Nonnull Opcode opcode,
                                   int instructionStart) {
        super(dexFile, opcode, instructionStart);
    }

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

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

    @Nonnull
    @Override
    public Reference getReference() {
        return DexBackedReference.makeReference(dexFile, opcode.referenceType, dexFile.readUshort(instructionStart + 2));
    }

    @Override
    public int getReferenceType() {
        return opcode.referenceType;
    }
}