Merge pull request #761 from jClugstor/solution_stripping

Lazy interpolation trait, stripping interpolation

src/alg_traits.jl

@@ -74,6 +74,14 @@ Defaults to false.
 """
 isdiscrete(alg::AbstractDEAlgorithm) = false
 
+"""
+    has_lazy_interpolation(alg::AbstractDEAlgorithm)
+
+Trait declaration for whether an algorithm computes the solution interpolation lazily.
+
+Defaults to false.
+"""
+has_lazy_interpolation(alg::AbstractDEAlgorithm) = false
 """
     allowsbounds(opt)
 

src/interpolation.jl

@@ -608,3 +608,14 @@ Constant Interpolation
         @. out = 0
     end
 end
+
+"""
+        strip_interpolation(id::AbstractDiffEqInterpolation)
+
+Returns a copy of the interpolation stripped of its function, to accommodate serialization.
+If the interpolation object has no function, returns the interpolation object as is.
+"""
+strip_interpolation(id::AbstractDiffEqInterpolation) = id
+strip_interpolation(id::HermiteInterpolation) = id 
+strip_interpolation(id::LinearInterpolation) = id
+strip_interpolation(id::ConstantInterpolation) = id

src/utils.jl

@@ -537,3 +537,4 @@ the arity of a function is computed with `numargs`
 See also: `prepare_initial_state`.
 """
 prepare_function(f) = f
+