refactored data-types to reduce plugin sizes

operator-groupby.go

@@ -11,6 +11,9 @@ import (
 
 	"git.portale-stac.it/go-pkg/expr/kern"
 	"git.portale-stac.it/go-pkg/expr/scan"
+	"git.portale-stac.it/go-pkg/expr/types/array"
+	"git.portale-stac.it/go-pkg/expr/types/dict"
+	"git.portale-stac.it/go-pkg/expr/types/str"
 )
 
 //-------- group by term
@@ -52,13 +55,13 @@ func evalGroupBy(ctx kern.ExprContext, opTerm *scan.Term) (v any, err error) {
 		keyByIndex = true
 	} else if rightValue, err = opTerm.Children[1].Compute(ctx); err != nil {
 		return
-	} else if kern.IsString(rightValue) {
+	} else if str.IsString(rightValue) {
 		sKey = rightValue.(string)
 	} else {
 		return nil, fmt.Errorf("right operand of GROUPBY must be a string or identifier '__'; got %s", kern.TypeName(rightValue))
 	}
 
-	values := kern.MakeDict()
+	values := dict.MakeDict()
 	for item, err = it.Next(); err == nil; item, err = it.Next() {
 		ctx.SetVar("_", item)
 		ctx.SetVar("__", it.Index())
@@ -66,7 +69,7 @@ func evalGroupBy(ctx kern.ExprContext, opTerm *scan.Term) (v any, err error) {
 
 		var sItemKey string
 
-		if d, ok := item.(*kern.DictType); ok {
+		if d, ok := item.(*dict.DictType); ok {
 			if keyByIndex || len(sKey) == 0 {
 				sItemKey = strconv.Itoa(int(it.Index()))
 			} else if d.HasKey(sKey) {
@@ -86,12 +89,12 @@ func evalGroupBy(ctx kern.ExprContext, opTerm *scan.Term) (v any, err error) {
 			sItemKey = strconv.Itoa(int(it.Index()))
 		}
 
-		var ls *kern.ListType
+		var ls *array.ListType
 		if lsAny, exists := values.GetItem(sItemKey); exists && lsAny != nil {
-			ls = lsAny.(*kern.ListType)
+			ls = lsAny.(*array.ListType)
 		}
 		if ls == nil {
-			ls = kern.NewListA()
+			ls = array.NewListA()
 		}
 		ls.AppendItem(item)
 		values.SetItem(sItemKey, ls)