Add helper methods

src/TrixiGPU.jl

@@ -1,16 +1,18 @@
 module TrixiGPU
 
 # Include other packages that are used in TrixiGPU.jl
+# using Reexport: @reexport
 
 using CUDA: @cuda, CuArray, HostKernel, launch_configuration, threadIdx
 using Trixi: AbstractEquations
 
-# Include other source files
+import Trixi: get_node_vars, get_node_coords, get_surface_node_vars
 
+# Include other source files
 include("function.jl")
 include("auxiliary/auxiliary.jl")
 
 # Export the public APIs
-export configurator_1d, configurator_2d, configurator_3d
+# export configurator_1d, configurator_2d, configurator_3d
 
 end

src/auxiliary/auxiliary.jl

@@ -1 +1,2 @@
-include("configurator.jl")
+include("configurators.jl")
+include("methods.jl")

src/auxiliary/methods.jl

@@ -0,0 +1,16 @@
+# Extend common helper methods from Trixi.jl
+
+@inline function get_node_vars(u, equations, indices...)
+    SVector(ntuple(@inline(v->u[v, indices...]), Val(nvariables(equations))))
+end
+
+@inline function get_node_coords(x, equations, indices...)
+    SVector(ntuple(@inline(idx->x[idx, indices...]), Val(ndims(equations))))
+end
+
+@inline function get_surface_node_vars(u, equations, indices...)
+    u_ll = SVector(ntuple(@inline(v->u[1, v, indices...]), Val(nvariables(equations))))
+    u_rr = SVector(ntuple(@inline(v->u[2, v, indices...]), Val(nvariables(equations))))
+
+    return u_ll, u_rr
+end