Merge pull request #771 from jClugstor/solution_strip_error

use custom exception for lazy interpolation

Author: ChrisRackauckas

src/solutions/ode_solutions.jl

@@ -605,10 +605,15 @@ function sensitivity_solution(sol::ODESolution, u, t)
     return @set sol.interp = interp
 end
 
+struct LazyInterpolationException <: Exception 
+    var::Symbol
+end
+
+Base.showerror(io::IO, e::LazyInterpolationException) = print(io, "The algorithm", e.var, " uses lazy interpolation, which is incompatible with `strip_solution`.")
+
 function strip_solution(sol::ODESolution)
     if has_lazy_interpolation(sol.alg)
-        error("The algorithm $(sol.alg) uses lazy interpolation, which is incompatible with
-        solution stripping.")
+        throw(LazyInterpolationException(nameof(typeof(sol.alg))))
     end
 
     interp = strip_interpolation(sol.interp)