import com.android.dx.io.OpcodeInfo; //导入依赖的package包/类
/**
 * Decodes an instruction from the given input source.
 */
public static DecodedInstruction decode(CodeInput in) throws EOFException {
    int opcodeUnit = in.read();
    int opcode = Opcodes.extractOpcodeFromUnit(opcodeUnit);
    InstructionCodec format = OpcodeInfo.getFormat(opcode);

    return format.decode(opcodeUnit, in);
}
 

import com.android.dx.io.OpcodeInfo; //导入依赖的package包/类
private DecodedInstruction decodeRawInsn(ShortArrayCodeInput in) throws EOFException {
	int opcodeUnit = in.read();
	int opcode = Opcodes.extractOpcodeFromUnit(opcodeUnit);
	OpcodeInfo.Info opcodeInfo;
	try {
		opcodeInfo = OpcodeInfo.get(opcode);
	} catch (IllegalArgumentException e) {
		LOG.warn("Ignore decode error: '{}', replace with NOP instruction", e.getMessage());
		opcodeInfo = OpcodeInfo.NOP;
	}
	return opcodeInfo.getFormat().decode(opcodeUnit, in);
}
 

import com.android.dx.io.OpcodeInfo; //导入依赖的package包/类
/**
 * Gets the opcode name.
 *
 * @return {@code non-null;} the opcode name
 */
public String getName() {
    return OpcodeInfo.getName(opcode);
}