fix update codegen

Signed-off-by: Hector Fernandez <hector@chainguard.dev>

third_party/VENDOR-LICENSE/github.com/hashicorp/hcl/decoder.go

@@ -505,7 +505,7 @@ func expandObject(node ast.Node, result reflect.Value) ast.Node {
 	// we need to un-flatten the ast enough to decode
 	newNode := &ast.ObjectItem{
 		Keys: []*ast.ObjectKey{
-			{
+			&ast.ObjectKey{
 				Token: keyToken,
 			},
 		},
@@ -628,24 +628,6 @@ func (d *decoder) decodeStruct(name string, node ast.Node, result reflect.Value)
 	decodedFields := make([]string, 0, len(fields))
 	decodedFieldsVal := make([]reflect.Value, 0)
 	unusedKeysVal := make([]reflect.Value, 0)
-
-	// fill unusedNodeKeys with keys from the AST
-	// a slice because we have to do equals case fold to match Filter
-	unusedNodeKeys := make(map[string][]token.Pos, 0)
-	for i, item := range list.Items {
-		for _, k := range item.Keys {
-			// isNestedJSON returns true for e.g. bar in
-			// { "foo": { "bar": {...} } }
-			// This isn't an unused node key, so we want to skip it
-			isNestedJSON := i > 0 && len(item.Keys) > 1
-			if !isNestedJSON && (k.Token.JSON || k.Token.Type == token.IDENT) {
-				fn := k.Token.Value().(string)
-				sl := unusedNodeKeys[fn]
-				unusedNodeKeys[fn] = append(sl, k.Token.Pos)
-			}
-		}
-	}
-
 	for _, f := range fields {
 		field, fieldValue := f.field, f.val
 		if !fieldValue.IsValid() {
@@ -679,7 +661,7 @@ func (d *decoder) decodeStruct(name string, node ast.Node, result reflect.Value)
 
 				fieldValue.SetString(item.Keys[0].Token.Value().(string))
 				continue
-			case "unusedKeyPositions":
+			case "unusedKeys":
 				unusedKeysVal = append(unusedKeysVal, fieldValue)
 				continue
 			}
@@ -700,9 +682,8 @@ func (d *decoder) decodeStruct(name string, node ast.Node, result reflect.Value)
 			continue
 		}
 
-		// Track the used keys
+		// Track the used key
 		usedKeys[fieldName] = struct{}{}
-		unusedNodeKeys = removeCaseFold(unusedNodeKeys, fieldName)
 
 		// Create the field name and decode. We range over the elements
 		// because we actually want the value.
@@ -735,13 +716,6 @@ func (d *decoder) decodeStruct(name string, node ast.Node, result reflect.Value)
 		}
 	}
 
-	if len(unusedNodeKeys) > 0 {
-		// like decodedFields, populated the unusedKeys field(s)
-		for _, v := range unusedKeysVal {
-			v.Set(reflect.ValueOf(unusedNodeKeys))
-		}
-	}
-
 	return nil
 }
 
@@ -753,17 +727,3 @@ func findNodeType() reflect.Type {
 	value := reflect.ValueOf(nodeContainer).FieldByName("Node")
 	return value.Type()
 }
-
-func removeCaseFold(xs map[string][]token.Pos, y string) map[string][]token.Pos {
-	var toDel []string
-
-	for i := range xs {
-		if strings.EqualFold(i, y) {
-			toDel = append(toDel, i)
-		}
-	}
-	for _, i := range toDel {
-		delete(xs, i)
-	}
-	return xs
-}