行为型/访问者模式/Sample2.cs

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namespace DesignModeConsole.行为型.访问者模式;

/// <summary>
/// 资源文件  违反开闭原则，增加功能了需要修改每个资源类
/// </summary>
public abstract class ResourceFile2
{
    public readonly string _filePath;

    public ResourceFile2(string filePath)
    {
        _filePath = filePath;
    }

    /// <summary>
    /// 提起文本
    /// </summary>
    /// <param name="extractor"></param>
    public abstract void Accept(Extractor extractor);

    /// <summary>
    /// 压缩
    /// </summary>
    /// <param name="compressor"></param>
    public abstract void Accept(CompressorService compressor);
}

public class PptFile2 : ResourceFile2
{
    public PptFile2(string filePath) : base(filePath)
    {
    }

    public override void Accept(Extractor extractor)
    {
        extractor.Extract2txt(this);
    }

    public override void Accept(CompressorService compressor)
    {
        compressor.Compressor(this);
    }
}

public class PdfFile2 : ResourceFile2
{
    public PdfFile2(string filePath) : base(filePath)
    {
    }

    public override void Accept(Extractor extractor)
    {
        extractor.Extract2txt(this);
    }

    public override void Accept(CompressorService compressor)
    {
        compressor.Compressor(this);
    }
}