(0.96.29) Add adapt structure for BuoyancyForce (#4543)

* adapt structure for BuoyancyForce

* Update Project.toml

Author: glwagner

Project.toml

@@ -1,7 +1,7 @@
 name = "Oceananigans"
 uuid = "9e8cae18-63c1-5223-a75c-80ca9d6e9a09"
 authors = ["Climate Modeling Alliance and contributors"]
-version = "0.96.28"
+version = "0.96.29"
 
 [deps]
 Adapt = "79e6a3ab-5dfb-504d-930d-738a2a938a0e"

src/BuoyancyFormulations/buoyancy_force.jl

@@ -1,10 +1,15 @@
 using Oceananigans.Grids: NegativeZDirection, validate_unit_vector
+using Adapt
 
 struct BuoyancyForce{M, G}
     formulation :: M
     gravity_unit_vector :: G
 end
 
+Adapt.adapt_structure(to, bf::BuoyancyForce) =
+    BuoyancyForce(adapt(to, bf.formulation),
+                  adapt(to, bf.gravity_unit_vector))
+
 """
     BuoyancyForce(formulation; gravity_unit_vector=NegativeZDirection())
 
@@ -44,7 +49,6 @@ function BuoyancyForce(formulation; gravity_unit_vector=NegativeZDirection())
     return BuoyancyForce(formulation, gravity_unit_vector)
 end
 
-
 @inline ĝ_x(bf) = @inbounds - bf.gravity_unit_vector[1]
 @inline ĝ_y(bf) = @inbounds - bf.gravity_unit_vector[2]
 @inline ĝ_z(bf) = @inbounds - bf.gravity_unit_vector[3]