moved scanner sources to package 'scan'

builtin-base.go

@@ -11,6 +11,7 @@ import (
 	"strings"
 
 	"git.portale-stac.it/go-pkg/expr/kern"
+	"git.portale-stac.it/go-pkg/expr/scan"
 )
 
 const (
@@ -199,7 +200,7 @@ func fractFunc(ctx kern.ExprContext, name string, args map[string]any) (result a
 
 func evalFunc(ctx kern.ExprContext, name string, args map[string]any) (result any, err error) {
 	if source, ok := args[kern.ParamSource].(string); ok {
-		var ast Expr
+		var ast kern.Expr
 
 		parser := NewParser()
 		if ctx == nil {
@@ -207,7 +208,7 @@ func evalFunc(ctx kern.ExprContext, name string, args map[string]any) (result an
 		}
 
 		r := strings.NewReader(source)
-		scanner := NewScanner(r, DefaultTranslations())
+		scanner := scan.NewScanner(r, scan.DefaultTranslations())
 
 		if ast, err = parser.Parse(scanner); err == nil {
 			CtrlEnable(ctx, kern.ControlExportAll)