add AbstractOptimizationSolver type

Author: dpo

src/solver.jl

@@ -3,6 +3,8 @@ export AbstractSolver, solve!
 "Abstract type from which JSO solvers derive."
 abstract type AbstractSolver end
 
+abstract type AbstractOptimizationSolver <: AbstractSolver end
+
 """
     solve!(solver, model; kwargs...)
     solve!(solver, model, stats; kwargs...)
@@ -11,7 +13,7 @@ Apply `solver` to `model`.
 
 # Arguments
 
-- `solver::AbstractSolver`: solver structure to hold all storage necessary for a solve
+- `solver::AbstractOptimizationSolver`: solver structure to hold all storage necessary for a solve
 - `model::AbstractNLPModel`: the model solved, see `NLPModels.jl`
 - `stats::GenericExecutionStats`: stats structure to hold solution information.
 
@@ -20,9 +22,14 @@ The second one fills out a preallocated stats structure and allows for efficient
 
 The `kwargs` are passed to the solver.
 """
-function solve!(solver::AbstractSolver, model::AbstractNLPModel; kwargs...)
+function solve!(solver::AbstractOptimizationSolver, model::AbstractNLPModel; kwargs...)
   stats = GenericExecutionStats(:unknown, model)
   solve!(solver, model, stats; kwargs...)
 end
 
-function solve!(::AbstractSolver, ::AbstractNLPModel, ::GenericExecutionStats; kwargs...) end
+function solve!(
+  ::AbstractOptimizationSolver,
+  ::AbstractNLPModel,
+  ::GenericExecutionStats;
+  kwargs...,
+) end