refactored data-types to reduce plugin sizes

operator-sign.go

@@ -7,6 +7,8 @@ package expr
 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"
+	"git.portale-stac.it/go-pkg/expr/types/float"
 )
 
 //-------- plus sign term
@@ -38,14 +40,14 @@ func evalSign(ctx kern.ExprContext, opTerm *scan.Term) (v any, err error) {
 		return
 	}
 
-	if kern.IsFloat(rightValue) {
+	if float.IsFloat(rightValue) {
 		if opTerm.Tk.Sym == scan.SymChangeSign {
 			f, _ := rightValue.(float64)
 			v = -f
 		} else {
 			v = rightValue
 		}
-	} else if kern.IsInteger(rightValue) {
+	} else if types.IsInteger(rightValue) {
 		if opTerm.Tk.Sym == scan.SymChangeSign {
 			i, _ := rightValue.(int64)
 			v = -i