1 files changed, 24 insertions, 0 deletions
diff --git a/internal/resource/embed/embed.go b/internal/resource/embed/embed.go
new file mode 100644
index 0000000..49fe3eb
--- /dev/null
+++ b/internal/resource/embed/embed.go
@@ -0,0 +1,24 @@
+package embed
+
+// DependsOn is embedded into concrete resource types to give them the ability
+// to accumulate dependency IDs supplied via the DependsOn option.
+type DependsOn struct {
+	IDs []string
+}
+
+// AddDependency records a single resource ID this resource depends on. It uses
+// a pointer receiver so the mutation is visible to the embedding value.
+func (d *DependsOn) AddDependency(id string) {
+	d.IDs = append(d.IDs, id)
+}
+
+// Absence is embedded into concrete resource types that can be marked for
+// removal via the IsAbsent option. It promotes an Absent field and a
+// SetAbsent method to the embedding type.
+type Absence struct {
+	Absent bool
+}
+
+// SetAbsent implements opt.Absentable, marking the resource for removal. It
+// uses a pointer receiver so the mutation is visible to the embedding value.
+func (a *Absence) SetAbsent() { a.Absent = true }