update: mark group mirror as constexpr

2 months ago · 8e416cc314
2 changed files with 4 additions and 4 deletions
--- a/src/core/group/group.h
+++ b/src/core/group/group.h
@ -188,9 +188,9 @@ public:

    // TODO: add `is_xxx_mirror` interface

-    [[nodiscard]] Group to_vertical_mirror() const;
+    [[nodiscard]] constexpr Group to_vertical_mirror() const;

-    [[nodiscard]] Group to_horizontal_mirror() const;
+    [[nodiscard]] constexpr Group to_horizontal_mirror() const;

 private:
    uint32_t type_id_;
--- a/src/core/group/internal/group.inl
+++ b/src/core/group/internal/group.inl
@ -24,11 +24,11 @@ constexpr uint32_t Group::flat_id() const {

 // ----------------------------------------------------------------------------------------- //

-Group Group::to_vertical_mirror() const {
+constexpr Group Group::to_vertical_mirror() const {
    return Group::unsafe_create(type_id_, GROUP_MIRROR_V[flat_id()]);
 }

-Group Group::to_horizontal_mirror() const {
+constexpr Group Group::to_horizontal_mirror() const {
    return Group::unsafe_create(type_id_, GROUP_MIRROR_H[flat_id()]);
 }