refactor!: require systems to be completed before creating an `XPro…

…blemExpr`

src/systems/diffeqs/abstractodesystem.jl

@@ -1200,6 +1200,9 @@ struct ODEProblemExpr{iip} end
 function ODEProblemExpr{iip}(sys::AbstractODESystem, u0map, tspan,
         parammap = DiffEqBase.NullParameters(); check_length = true,
         kwargs...) where {iip}
+    if !iscomplete(sys)
+        error("A completed system is required. Call `complete` or `structural_simplify` on the system before creating a `ODEProblemExpr`")
+    end
     f, u0, p = process_DEProblem(ODEFunctionExpr{iip}, sys, u0map, parammap; check_length,
         kwargs...)
     linenumbers = get(kwargs, :linenumbers, true)
@@ -1242,6 +1245,9 @@ struct DAEProblemExpr{iip} end
 function DAEProblemExpr{iip}(sys::AbstractODESystem, du0map, u0map, tspan,
         parammap = DiffEqBase.NullParameters(); check_length = true,
         kwargs...) where {iip}
+    if !iscomplete(sys)
+        error("A completed system is required. Call `complete` or `structural_simplify` on the system before creating a `DAEProblemExpr`")
+    end
     f, du0, u0, p = process_DEProblem(DAEFunctionExpr{iip}, sys, u0map, parammap;
         implicit_dae = true, du0map = du0map, check_length,
         kwargs...)
@@ -1322,6 +1328,9 @@ function SteadyStateProblemExpr{iip}(sys::AbstractODESystem, u0map,
         parammap = SciMLBase.NullParameters();
         check_length = true,
         kwargs...) where {iip}
+    if !iscomplete(sys)
+        error("A completed system is required. Call `complete` or `structural_simplify` on the system before creating a `SteadyStateProblemExpr`")
+    end
     f, u0, p = process_DEProblem(ODEFunctionExpr{iip}, sys, u0map, parammap;
         steady_state = true,
         check_length, kwargs...)

src/systems/diffeqs/sdesystem.jl

@@ -635,6 +635,9 @@ function SDEProblemExpr{iip}(sys::SDESystem, u0map, tspan,
         parammap = DiffEqBase.NullParameters();
         sparsenoise = nothing, check_length = true,
         kwargs...) where {iip}
+    if !iscomplete(sys)
+        error("A completed `SDESystem` is required. Call `complete` or `structural_simplify` on the system before creating an `SDEProblemExpr`")
+    end
     f, u0, p = process_DEProblem(SDEFunctionExpr{iip}, sys, u0map, parammap; check_length,
         kwargs...)
     linenumbers = get(kwargs, :linenumbers, true)

src/systems/discrete_system/discrete_system.jl

@@ -452,6 +452,9 @@ function DiscreteProblemExpr{iip}(sys::DiscreteSystem, u0map, tspan,
         parammap = DiffEqBase.NullParameters();
         check_length = true,
         kwargs...) where {iip}
+    if !iscomplete(sys)
+        error("A completed `DiscreteSystem` is required. Call `complete` or `structural_simplify` on the system before creating a `DiscreteProblemExpr`")
+    end
     f, u0, p = process_DiscreteProblem(DiscreteFunctionExpr{iip}, sys, u0map, parammap;
         check_length, kwargs...)
     linenumbers = get(kwargs, :linenumbers, true)

src/systems/jumps/jumpsystem.jl

@@ -356,6 +356,9 @@ function DiscreteProblemExpr{iip}(sys::JumpSystem, u0map, tspan::Union{Tuple, No
         parammap = DiffEqBase.NullParameters();
         use_union = false,
         kwargs...) where {iip}
+    if !iscomplete(sys)
+        error("A completed `JumpSystem` is required. Call `complete` or `structural_simplify` on the system before creating a `DiscreteProblemExpr`")
+    end
     dvs = states(sys)
     ps = parameters(sys)
     defs = defaults(sys)

src/systems/nonlinear/nonlinearsystem.jl

@@ -399,6 +399,9 @@ function NonlinearProblemExpr{iip}(sys::NonlinearSystem, u0map,
         parammap = DiffEqBase.NullParameters();
         check_length = true,
         kwargs...) where {iip}
+    if !iscomplete(sys)
+        error("A completed `NonlinearSystem` is required. Call `complete` or `structural_simplify` on the system before creating a `NonlinearProblemExpr`")
+    end
     f, u0, p = process_NonlinearProblem(NonlinearFunctionExpr{iip}, sys, u0map, parammap;
         check_length, kwargs...)
     linenumbers = get(kwargs, :linenumbers, true)

src/systems/optimization/optimizationsystem.jl

@@ -422,6 +422,9 @@ function OptimizationProblemExpr{iip}(sys::OptimizationSystem, u0map,
         linenumbers = false, parallel = SerialForm(),
         use_union = false,
         kwargs...) where {iip}
+    if !iscomplete(sys)
+        error("A completed `OptimizationSystem` is required. Call `complete` or `structural_simplify` on the system before creating a `OptimizationProblemExpr`")
+    end
     if haskey(kwargs, :lcons) || haskey(kwargs, :ucons)
         Base.depwarn("`lcons` and `ucons` are deprecated. Specify constraints directly instead.",
             :OptimizationProblem, force = true)