internal static Filter Convert(ScriptNode Conditions, Variables Variables, string Name)
{
if (Conditions is null)
{
return(null);
}
if (Conditions is BinaryOperator Bin)
{
ScriptNode LO = Reduce(Bin.LeftOperand, Name);
ScriptNode RO = Reduce(Bin.RightOperand, Name);
Operators.Logical.And And = Conditions as Operators.Logical.And;
Operators.Dual.And And2 = And is null ? Conditions as Operators.Dual.And : null;
if (And != null || And2 != null)
{
Filter L = Convert(LO, Variables, Name);
Filter R = Convert(RO, Variables, Name);
if (L is null && R is null)
{
return(null);
}
else if (L is null)
{
return(R);
}
else if (R is null)
{
return(L);
}
else
{
List <Filter> Filters = new List <Filter>();
if (L is FilterAnd L2)
{
Filters.AddRange(L2.ChildFilters);
}
else
{
Filters.Add(L);
}
if (R is FilterAnd R2)
{
Filters.AddRange(R2.ChildFilters);
}
else
{
Filters.Add(R);
}
return(new FilterAnd(Filters.ToArray()));
}
}
Operators.Logical.Or Or = Conditions as Operators.Logical.Or;
Operators.Dual.Or Or2 = Or is null ? Conditions as Operators.Dual.Or : null;
if (Or != null || Or2 != null)
{
Filter L = Convert(LO, Variables, Name);
Filter R = Convert(RO, Variables, Name);
if (L is null || R is null)
{
return(null);
}
else
{
List <Filter> Filters = new List <Filter>();
if (L is FilterOr L2)
{
Filters.AddRange(L2.ChildFilters);
}
else
{
Filters.Add(L);
}
if (R is FilterOr R2)
{
Filters.AddRange(R2.ChildFilters);
}
else
{
Filters.Add(R);
}
return(new FilterOr(Filters.ToArray()));
}
}
internal static Filter Convert(ScriptNode Conditions, Variables Variables)
{
if (Conditions == null)
{
return(null);
}
Operators.Logical.And And = Conditions as Operators.Logical.And;
Operators.Dual.And And2 = And == null ? Conditions as Operators.Dual.And : null;
if (And != null || And2 != null)
{
Filter L = Convert(And != null ? And.LeftOperand : And2.LeftOperand, Variables);
Filter R = Convert(And != null ? And.RightOperand : And2.RightOperand, Variables);
if (L == null && R == null)
{
return(null);
}
else if (L == null)
{
return(R);
}
else if (R == null)
{
return(L);
}
else
{
List <Filter> Filters = new List <Filter>();
if (L is FilterAnd L2)
{
Filters.AddRange(L2.ChildFilters);
}
else
{
Filters.Add(L);
}
if (R is FilterAnd R2)
{
Filters.AddRange(R2.ChildFilters);
}
else
{
Filters.Add(R);
}
return(new FilterAnd(Filters.ToArray()));
}
}
Operators.Logical.Or Or = Conditions as Operators.Logical.Or;
Operators.Dual.Or Or2 = Or == null ? Conditions as Operators.Dual.Or : null;
if (Or != null || Or2 != null)
{
Filter L = Convert(Or != null ? Or.LeftOperand : Or2.LeftOperand, Variables);
Filter R = Convert(Or != null ? Or.RightOperand : Or2.RightOperand, Variables);
if (L == null || R == null)
{
return(null);
}
else
{
List <Filter> Filters = new List <Filter>();
if (L is FilterOr L2)
{
Filters.AddRange(L2.ChildFilters);
}
else
{
Filters.Add(L);
}
if (R is FilterOr R2)
{
Filters.AddRange(R2.ChildFilters);
}
else
{
Filters.Add(R);
}
return(new FilterOr(Filters.ToArray()));
}
}
if (Conditions is Operators.Logical.Not Not)
{
Filter F = Convert(Not.Operand, Variables);
if (F == null)
{
return(null);
}
else
{
return(new FilterNot(F));
}
}
else if (Conditions is BinaryOperator Bin && Bin.LeftOperand is VariableReference Var)
{
string FieldName = Var.VariableName;
object Value = Bin.RightOperand.Evaluate(Variables)?.AssociatedObjectValue ?? null;
if (Conditions is Operators.Comparisons.EqualTo ||
Conditions is Operators.Comparisons.EqualToElementWise ||
Conditions is Operators.Comparisons.IdenticalTo ||
Conditions is Operators.Comparisons.IdenticalToElementWise)
{
return(new FilterFieldEqualTo(FieldName, Value));
}
else if (Conditions is Operators.Comparisons.NotEqualTo ||
Conditions is Operators.Comparisons.NotEqualToElementWise)
{
return(new FilterFieldNotEqualTo(FieldName, Value));
}
else if (Conditions is Operators.Comparisons.GreaterThan)
{
return(new FilterFieldGreaterThan(FieldName, Value));
}
else if (Conditions is Operators.Comparisons.GreaterThanOrEqualTo)
{
return(new FilterFieldGreaterOrEqualTo(FieldName, Value));
}
else if (Conditions is Operators.Comparisons.LesserThan)
{
return(new FilterFieldLesserThan(FieldName, Value));
}
else if (Conditions is Operators.Comparisons.LesserThanOrEqualTo)
{
return(new FilterFieldLesserOrEqualTo(FieldName, Value));
}
else if (Conditions is Operators.Comparisons.Like Like)
{
string RegEx = WildcardToRegex(Value is string s ? s : Expression.ToString(Value), "%");
Like.TransformExpression += (Expression) => WildcardToRegex(Expression, "%");
return(new FilterFieldLikeRegEx(FieldName, RegEx));
}
else if (Conditions is Operators.Comparisons.NotLike NotLike)
{
string RegEx = WildcardToRegex(Value is string s ? s : Expression.ToString(Value), "%");
NotLike.TransformExpression += (Expression) => WildcardToRegex(Expression, "%");
return(new FilterNot(new FilterFieldLikeRegEx(FieldName, RegEx)));
}
}
return(null);
}
