ns-ext/src/NSExt/Extensions/GenericExtensions.cs

namespace NSExt.Extensions;

public static class GenericExtensions
{
    /// <summary>
    ///     从指定的对象拷贝属性
    /// </summary>
    /// <typeparam name="T">对象类型</typeparam>
    /// <param name="me">拷贝目标</param>
    /// <param name="copyObj">拷贝来源</param>
    /// <param name="propNameList">需要处理的属性名</param>
    /// <param name="isIncludeOrExclude">True包含，false排除</param>
    public static void CopyFrom<T>(this T        me,
                                   T             copyObj,
                                   IList<string> propNameList       = null,
                                   bool          isIncludeOrExclude = false)
    {
        foreach (var p in me.GetType().GetProperties()) {
            if (!p.CanWrite) continue;
            bool isSet;
            if (isIncludeOrExclude)
                isSet = propNameList?.Contains(p.Name) ?? false;
            else
                isSet = !propNameList?.Contains(p.Name) ?? true;

            if (isSet) p.SetValue(me, copyObj.GetType().GetProperty(p.Name)?.GetValue(copyObj, null), null);
        }
    }


    /// <summary>
    ///     判断是否与某对象相等
    /// </summary>
    /// <typeparam name="T"></typeparam>
    /// <param name="me"></param>
    /// <param name="compare"></param>
    /// <param name="ret"></param>
    /// <returns></returns>
    public static T Is<T>(this T me, T compare, T ret) where T : struct
    {
        return me.Equals(compare) ? ret : me;
    }
}