public virtual LambdaExpression CompareValue(ExpressionValue left, ExpressionValue right)
{
if (!right.IsConst)
{
// TODO ..
// throw
}
if (right.ValueInfo.ConstantValue is IList list)
{
var parameter = Expression.Parameter(left.SourceType);
var leftExpression = left.GetLambda(parameter);
var listType = typeof(List <>).MakeGenericType(leftExpression.ReturnType);
var method = GetListContainsMethod(listType);
var data = ConvertListItems(listType, leftExpression.ReturnType, list);
if (data.Count == 0)
{
return(Expression.Lambda(Expression.Constant(false), parameter));
}
return(Expression.Lambda(
Expression.Call(Expression.Constant(data !), method, leftExpression.Body),
parameter));
}
else
{
// TODO ..
// throw
}
throw new NotImplementedException();
}
public LambdaExpression CompareValue(ExpressionValue left, ExpressionValue right)
{
if (left.IsConst && !right.IsConst)
{
var parameter = Expression.Parameter(left.SourceType);
var rightLambda = right.GetLambda(parameter);
// ensure both right and left use the same parameter
var leftLambda = left.GetLambda(parameter, rightLambda.ReturnType);
var expression = CompareValue(leftLambda.Body, rightLambda.Body, rightLambda.ReturnType);
return(Expression.Lambda(typeof(Func <,>).MakeGenericType(left.SourceType, typeof(bool)), expression, parameter));
}
else
{
var parameter = Expression.Parameter(left.SourceType);
var leftLambda = left.GetLambda(parameter);
// ensure both right and left use the same parameter
var rightLambda = right.GetLambda(parameter, leftLambda.ReturnType);
var expression = CompareValue(leftLambda.Body, rightLambda.Body, leftLambda.ReturnType);
return(Expression.Lambda(typeof(Func <,>).MakeGenericType(left.SourceType, typeof(bool)), expression, parameter));
}
}
