[core] Make iteratorRange/iteratorRole copyable

Author: teo

core/workflow/iteratorrange.go

@@ -33,6 +33,7 @@ import (
 )
 
 type iteratorRange interface {
+	copyable
 	GetRange(varStack map[string]string) (ran []string, err error)
 	GetVar() string
 }
@@ -42,6 +43,14 @@ type iteratorRangeExpr struct {
 	Var         string                  `yaml:"var"`
 }
 
+func (f *iteratorRangeExpr) copy() copyable {
+	itrCopy := iteratorRangeExpr{
+		Range: f.Range,
+		Var:   f.Var,
+	}
+	return &itrCopy
+}
+
 func (f *iteratorRangeExpr) GetRange(varStack map[string]string) (ran []string, err error) {
 	rangeObj := make([]string, 0)
 
@@ -69,6 +78,15 @@ type iteratorRangeFor struct {
 	Var         string                  `yaml:"var"`
 }
 
+func (f *iteratorRangeFor) copy() copyable {
+	itrCopy := iteratorRangeFor{
+		Begin: f.Begin,
+		End:   f.End,
+		Var:   f.Var,
+	}
+	return &itrCopy
+}
+
 func (f *iteratorRangeFor) GetRange(varStack map[string]string) (ran []string, err error) {
 	ran = make([]string, 0)
 

core/workflow/iteratorrole.go

@@ -196,6 +196,15 @@ func (i *iteratorRole) expandTemplate() (err error) {
 	return
 }
 
+func (i *iteratorRole) copy() copyable {
+	iCopy := iteratorRole{
+		aggregator: *i.aggregator.copy().(*aggregator),
+		For:        i.For.copy().(iteratorRange),
+		template:   i.template, // no copy because the template stays the same
+	}
+	return &iCopy
+}
+
 func (i *iteratorRole) GetParent() Updatable {
 	if i == nil || i.template == nil {
 		return nil