1 files changed, 40 insertions, 0 deletions
diff --git a/vendor/github.com/hashicorp/terraform/terraform/transform_variable.go b/vendor/github.com/hashicorp/terraform/terraform/transform_variable.go
new file mode 100644
index 00000000..b31e2c76
--- /dev/null
+++ b/vendor/github.com/hashicorp/terraform/terraform/transform_variable.go
@@ -0,0 +1,40 @@
+package terraform
+
+import (
+	"github.com/hashicorp/terraform/config/module"
+)
+
+// RootVariableTransformer is a GraphTransformer that adds all the root
+// variables to the graph.
+//
+// Root variables are currently no-ops but they must be added to the
+// graph since downstream things that depend on them must be able to
+// reach them.
+type RootVariableTransformer struct {
+	Module *module.Tree
+}
+
+func (t *RootVariableTransformer) Transform(g *Graph) error {
+	// If no config, no variables
+	if t.Module == nil {
+		return nil
+	}
+
+	// If we have no vars, we're done!
+	vars := t.Module.Config().Variables
+	if len(vars) == 0 {
+		return nil
+	}
+
+	// Add all variables here
+	for _, v := range vars {
+		node := &NodeRootVariable{
+			Config: v,
+		}
+
+		// Add it!
+		g.Add(node)
+	}
+
+	return nil
+}