tree 56fa8922af26ff8b33f3923ee0d24691fec3f139
parent 911944cc8d8e976705c290a7310022d1eb5e7433
author Ben Clayton <bclayton@google.com> 1645221953 +0000
committer Tint LUCI CQ <tint-scoped@luci-project-accounts.iam.gserviceaccount.com> 1645221953 +0000

Simplify traits, add CastableCommonBase & IsCastable

Use `static constexpr bool` instead of `std::integral_constant` for `IsTypeOrDerived`. This is often cleaner to use.

Add `IsCastable`, a helper for determining if all the template types derive from `CastableBase`.

Add `CastableCommonBase`, some template magic for determinine the most derived, common base type for all castable types.

Change-Id: Ia3d33548424750f8260f518ecd63d39949e4a826
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/81105
Kokoro: Kokoro <noreply+kokoro@google.com>
Auto-Submit: Ben Clayton <bclayton@google.com>
Reviewed-by: Antonio Maiorano <amaiorano@google.com>
Commit-Queue: Antonio Maiorano <amaiorano@google.com>