1 files changed, 30 insertions, 0 deletions

diff --git a/vendor/github.com/hashicorp/hil/ast/unknown.go b/vendor/github.com/hashicorp/hil/ast/unknown.go
new file mode 100644
index 0000000..d6ddaec
--- /dev/null
+++ b/vendor/github.com/hashicorp/hil/ast/unknown.go
@@ -0,0 +1,30 @@
+package ast
+
+// IsUnknown reports whether a variable is unknown or contains any value
+// that is unknown. This will recurse into lists and maps and so on.
+func IsUnknown(v Variable) bool {
+        // If it is unknown itself, return true
+        if v.Type == TypeUnknown {
+                return true
+        }
+
+        // If it is a container type, check the values
+        switch v.Type {
+        case TypeList:
+                for _, el := range v.Value.([]Variable) {
+                        if IsUnknown(el) {
+                                return true
+                        }
+                }
+        case TypeMap:
+                for _, el := range v.Value.(map[string]Variable) {
+                        if IsUnknown(el) {
+                                return true
+                        }
+                }
+        default:
+        }
+
+        // Not a container type or survive the above checks
+        return false
+}