1 files changed, 41 insertions, 0 deletions

diff --git a/vendor/github.com/hashicorp/terraform/helper/hilmapstructure/hilmapstructure.go b/vendor/github.com/hashicorp/terraform/helper/hilmapstructure/hilmapstructure.go
new file mode 100644
index 0000000..67be1df
--- /dev/null
+++ b/vendor/github.com/hashicorp/terraform/helper/hilmapstructure/hilmapstructure.go
@@ -0,0 +1,41 @@
+package hilmapstructure
+
+import (
+        "fmt"
+        "reflect"
+
+        "github.com/mitchellh/mapstructure"
+)
+
+var hilMapstructureDecodeHookEmptySlice []interface{}
+var hilMapstructureDecodeHookStringSlice []string
+var hilMapstructureDecodeHookEmptyMap map[string]interface{}
+
+// WeakDecode behaves in the same way as mapstructure.WeakDecode but has a
+// DecodeHook which defeats the backward compatibility mode of mapstructure
+// which WeakDecodes []interface{}{} into an empty map[string]interface{}. This
+// allows us to use WeakDecode (desirable), but not fail on empty lists.
+func WeakDecode(m interface{}, rawVal interface{}) error {
+        config := &mapstructure.DecoderConfig{
+                DecodeHook: func(source reflect.Type, target reflect.Type, val interface{}) (interface{}, error) {
+                        sliceType := reflect.TypeOf(hilMapstructureDecodeHookEmptySlice)
+                        stringSliceType := reflect.TypeOf(hilMapstructureDecodeHookStringSlice)
+                        mapType := reflect.TypeOf(hilMapstructureDecodeHookEmptyMap)
+
+                        if (source == sliceType || source == stringSliceType) && target == mapType {
+                                return nil, fmt.Errorf("Cannot convert a []interface{} into a map[string]interface{}")
+                        }
+
+                        return val, nil
+                },
+                WeaklyTypedInput: true,
+                Result:           rawVal,
+        }
+
+        decoder, err := mapstructure.NewDecoder(config)
+        if err != nil {
+                return err
+        }
+
+        return decoder.Decode(m)
+}