/// <summary>
/// 处理
/// where(x=>x.name==null)
/// where(x=>x.name.contains(""))
/// where(x=>(x.age/20)>9)
/// order(x=>x.xx)
/// select(x=>x.name)
/// select(x=>new {x.name,x.age})
/// </summary>
/// <param name="expr"></param>
/// <param name="func"></param>
/// <returns></returns>
public static string Transform(Expression expr, ISqlDialect db, ref ExpressionParsedResult model)
{
switch (expr.NodeType)
{
case ExpressionType.Add:
case ExpressionType.AddChecked:
case ExpressionType.And:
case ExpressionType.AndAlso:
case ExpressionType.ArrayIndex:
case ExpressionType.Assign:
case ExpressionType.Coalesce:
case ExpressionType.Divide:
case ExpressionType.Equal:
case ExpressionType.ExclusiveOr:
case ExpressionType.GreaterThan:
case ExpressionType.GreaterThanOrEqual:
case ExpressionType.LeftShift:
case ExpressionType.LessThan:
case ExpressionType.LessThanOrEqual:
case ExpressionType.Modulo:
case ExpressionType.Multiply:
case ExpressionType.MultiplyChecked:
case ExpressionType.NotEqual:
case ExpressionType.Or:
case ExpressionType.OrElse:
case ExpressionType.Power:
case ExpressionType.RightShift:
case ExpressionType.Subtract:
case ExpressionType.SubtractChecked:
case ExpressionType.AddAssign:
case ExpressionType.AndAssign:
case ExpressionType.DivideAssign:
case ExpressionType.ExclusiveOrAssign:
case ExpressionType.LeftShiftAssign:
case ExpressionType.ModuloAssign:
case ExpressionType.MultiplyAssign:
case ExpressionType.OrAssign:
case ExpressionType.PowerAssign:
case ExpressionType.RightShiftAssign:
case ExpressionType.SubtractAssign:
case ExpressionType.AddAssignChecked:
case ExpressionType.MultiplyAssignChecked:
case ExpressionType.SubtractAssignChecked: return(TransformX((BinaryExpression)expr, db, ref model));
case ExpressionType.Convert:
case ExpressionType.ConvertChecked:
case ExpressionType.Negate:
case ExpressionType.NegateChecked:
case ExpressionType.Not:
case ExpressionType.Quote:
case ExpressionType.TypeAs:
case ExpressionType.UnaryPlus:
case ExpressionType.Decrement:
case ExpressionType.Increment:
case ExpressionType.IsFalse:
case ExpressionType.IsTrue:
case ExpressionType.Throw:
case ExpressionType.Unbox:
case ExpressionType.OnesComplement: return(TransformX((UnaryExpression)expr, db, ref model));
case ExpressionType.Call: return(TransformX((MethodCallExpression)expr, db, ref model));
case ExpressionType.Lambda: return(TransformX((LambdaExpression)expr, db, ref model));
case ExpressionType.ListInit: return(TransformX((ListInitExpression)expr, db, ref model));
case ExpressionType.MemberAccess: return(TransformX((MemberExpression)expr, db, ref model));
case ExpressionType.MemberInit: return(TransformX((MemberInitExpression)expr, db, ref model));
case ExpressionType.New: return(TransformX((NewExpression)expr, db, ref model));
case ExpressionType.NewArrayBounds: return(TransformX((NewArrayExpression)expr, db, ref model));
case ExpressionType.NewArrayInit: return(TransformX((NewArrayExpression)expr, db, ref model));
case ExpressionType.TypeEqual:
case ExpressionType.ArrayLength:
case ExpressionType.PreIncrementAssign:
case ExpressionType.PreDecrementAssign:
case ExpressionType.PostIncrementAssign:
case ExpressionType.PostDecrementAssign:
case ExpressionType.Conditional:
case ExpressionType.Invoke:
case ExpressionType.TypeIs:
case ExpressionType.Block:
case ExpressionType.DebugInfo:
case ExpressionType.Default:
case ExpressionType.Constant:
case ExpressionType.Parameter:
case ExpressionType.Dynamic:
case ExpressionType.Goto:
case ExpressionType.Index:
case ExpressionType.Label:
case ExpressionType.RuntimeVariables:
case ExpressionType.Loop:
case ExpressionType.Switch:
case ExpressionType.Try:
case ExpressionType.Extension:
break;
}
throw new NotSupportedException($"不支持的表达式类型：{expr.NodeType}");
}
static string TransformX(Expression e, ISqlDialect db, ref ExpressionParsedResult nn)
{
throw new NotImplementedException();
}
