import org.jf.dexlib2.analysis.RegisterType; //导入依赖的package包/类
private void addMergeRegs(BitSet registers, int registerCount) {
    if (analyzedInstruction.getPredecessorCount() <= 1) {
        //in the common case of an instruction that only has a single predecessor which is the previous
        //instruction, the pre-instruction registers will always match the previous instruction's
        //post-instruction registers
        return;
    }

    for (int registerNum=0; registerNum<registerCount; registerNum++) {
        RegisterType mergedRegisterType = analyzedInstruction.getPreInstructionRegisterType(registerNum);

        for (AnalyzedInstruction predecessor: analyzedInstruction.getPredecessors()) {
            RegisterType predecessorRegisterType = predecessor.getPostInstructionRegisterType(registerNum);
            if (predecessorRegisterType.category != RegisterType.UNKNOWN &&
                    !predecessorRegisterType.equals(mergedRegisterType)) {
                registers.set(registerNum);
            }
        }
    }
}
 

import org.jf.dexlib2.analysis.RegisterType; //导入依赖的package包/类
private boolean writeRegisterInfo(IndentingWriter writer, BitSet registers) throws IOException {
    int registerNum = registers.nextSetBit(0);
    if (registerNum < 0) {
        return false;
    }

    writer.write('#');
    for (; registerNum >= 0; registerNum = registers.nextSetBit(registerNum + 1)) {
        RegisterType registerType = analyzedInstruction.getPostInstructionRegisterType(registerNum);

        registerFormatter.writeTo(writer, registerNum);
        writer.write('=');
        registerType.writeTo(writer);
        writer.write(';');
    }
    return true;
}
 

import org.jf.dexlib2.analysis.RegisterType; //导入依赖的package包/类
private void writeFullMerge(IndentingWriter writer, int registerNum) throws IOException {
    registerFormatter.writeTo(writer, registerNum);
    writer.write('=');
    analyzedInstruction.getPreInstructionRegisterType(registerNum).writeTo(writer);
    writer.write(":merge{");

    boolean first = true;

    for (AnalyzedInstruction predecessor: analyzedInstruction.getPredecessors()) {
        RegisterType predecessorRegisterType = predecessor.getPostInstructionRegisterType(registerNum);

        if (!first) {
            writer.write(',');
        }

        if (predecessor.getInstructionIndex() == -1) {
            //the fake "StartOfMethod" instruction
            writer.write("Start:");
        } else {
            writer.write("0x");
            writer.printUnsignedLongAsHex(methodAnalyzer.getInstructionAddress(predecessor));
            writer.write(':');
        }
        predecessorRegisterType.writeTo(writer);

        first = false;
    }
    writer.write('}');
}
 

import org.jf.dexlib2.analysis.RegisterType; //导入依赖的package包/类
private boolean writeRegisterInfo(IndentingWriter writer, BitSet registers,
                                  BitSet fullMergeRegisters) throws IOException {
    boolean firstRegister = true;
    boolean previousWasFullMerge = false;
    int registerNum = registers.nextSetBit(0);
    if (registerNum < 0) {
        return false;
    }

    writer.write('#');
    for (; registerNum >= 0; registerNum = registers.nextSetBit(registerNum + 1)) {
        boolean fullMerge = fullMergeRegisters!=null && fullMergeRegisters.get(registerNum);
        if (fullMerge) {
            if (!firstRegister) {
                writer.write('\n');
                writer.write('#');
            }
            writeFullMerge(writer, registerNum);
            previousWasFullMerge = true;
        } else {
            if (previousWasFullMerge) {
                writer.write('\n');
                writer.write('#');
                previousWasFullMerge = false;
            }

            RegisterType registerType = analyzedInstruction.getPreInstructionRegisterType(registerNum);

            registerFormatter.writeTo(writer, registerNum);
            writer.write('=');

            registerType.writeTo(writer);
            writer.write(';');
        }

        firstRegister = false;
    }
    return true;
}