Working in generics now to reduce code.

generics are a little funky still. sigh.

datamodel/low/reference.go

@@ -6,8 +6,9 @@ type HasNode interface {
 	GetNode() *yaml.Node
 }
 
-type Buildable interface {
+type Buildable[T any] interface {
 	Build(node *yaml.Node) error
+	*T
 }
 
 type NodeReference[T any] struct {
@@ -16,6 +17,16 @@ type NodeReference[T any] struct {
 	KeyNode   *yaml.Node
 }
 
+type KeyReference[T any] struct {
+	Value   T
+	KeyNode *yaml.Node
+}
+
+type ValueReference[T any] struct {
+	Value     T
+	ValueNode *yaml.Node
+}
+
 type ObjectReference struct {
 	Value     interface{}
 	ValueNode *yaml.Node
@@ -25,3 +36,11 @@ type ObjectReference struct {
 func (n NodeReference[T]) IsEmpty() bool {
 	return n.KeyNode == nil && n.ValueNode == nil
 }
+
+func (n NodeReference[T]) IsMapKeyNode() bool {
+	return n.KeyNode != nil && n.ValueNode == nil
+}
+
+func (n NodeReference[T]) IsMapValueNode() bool {
+	return n.KeyNode == nil && n.ValueNode != nil
+}