private PropertyUnit <TSource> UnitAddOp(PropertyUnit <TSource> unit)
{
var operand = unit.Exp;
if (PropertyType == typeof(string))
{
return(new PropertyUnit <TSource>(Parameter, Expression.Add(Exp, operand, MethodUnit.StringConcat), typeof(string)));
}
else
{
return(new PropertyUnit <TSource>(Parameter, Expression.AddChecked(Exp, operand), PropertyType));
}
}
private WhereExp <TSource> CompareOp(Func <Expression, Expression, BinaryExpression> func, PropertyUnit <TSource> unit)
{
var operand = unit.Exp;
var body = func(Exp, operand);
var exp = Expression.Lambda <Func <TSource, bool> >(body, Parameter);
return(new WhereExp <TSource>(exp));
}
private PropertyUnit <TSource> UnitOp(Func <Expression, Expression, BinaryExpression> func, PropertyUnit <TSource> unit)
{
var operand = unit.Exp;
return(new PropertyUnit <TSource>(Parameter, func(Exp, operand), PropertyType));
}