added: pretty-print estim.direct for all StateEstimators

Author: franckgaga

src/estimator/mhe.jl

@@ -11,7 +11,7 @@ function print_details(io::IO, estim::MovingHorizonEstimator)
     println(io, "├ arrival covariance: $(nameof(typeof(estim.covestim))) ")
 end
 
-"Print the differentiation backends for `SimModel`."
+"Print the differentiation backends of `MovingHorizonEstimator` for `SimModel`."
 function print_backends(io::IO, estim::MovingHorizonEstimator, ::SimModel)
     println(io, "├ gradient: $(backend_str(estim.gradient))")
     println(io, "├ jacobian: $(backend_str(estim.jacobian))")

src/state_estim.jl

@@ -37,6 +37,7 @@ function Base.show(io::IO, estim::StateEstimator)
     println(io, "$(nameof(typeof(estim))) estimator with a sample time Ts = $(model.Ts) s:")
     println(io, "├ model: $(nameof(typeof(estim.model)))")
     print_details(io, estim)
+    println(io, "├ direct: $(estim.direct) ")
     println(io, "└ dimensions:")
     print_estim_dim(io, estim, n)
 end