chore: SciMLBase.NullParameters -> DiffEqBase.NullParameters

src/adjoint_common.jl

@@ -34,7 +34,7 @@ function adjointdiffcache(g::G, sensealg, discrete, sol, dgdu::DG1, dgdp::DG2, f
  prob = sol.prob
  u0 = state_values(prob)
  p = parameter_values(prob)
- if p === nothing || p isa SciMLBase.NullParameters
+ if p === nothing || p === DiffEqBase.NullParameters()
  tunables, repack = p, identity
  elseif isscimlstructure(p)
  tunables, repack, _ = canonicalize(Tunable(), p)
@@ -367,14 +367,14 @@ function get_paramjac_config(autojacvec::ReverseDiffVJP, p, f, y, _p, _t;
  numindvar = nothing, alg = nothing, isinplace = true,
  isRODE = false, _W = nothing)
  # f = unwrappedf
- if p === nothing || p isa SciMLBase.NullParameters
+ if p === nothing || p === DiffEqBase.NullParameters()
  tunables, repack = p, identity
  else
  tunables, repack, aliases = canonicalize(Tunable(), p)
  end
  if isinplace
  if !isRODE
- __p = p isa SciMLBase.NullParameters ? _p :
+ __p = p === DiffEqBase.NullParameters() ? _p :
  SciMLStructures.replace(Tunable(), p, _p)
  tape = ReverseDiff.GradientTape((y, __p, [_t])) do u, p, t
  du1 = (p !== nothing && p !== DiffEqBase.NullParameters()) ?
@@ -397,7 +397,7 @@ function get_paramjac_config(autojacvec::ReverseDiffVJP, p, f, y, _p, _t;
  # GradientTape doesn't handle NullParameters; hence _p isa zeros(...)
  # Cannot define replace(Tunable(), ::NullParameters, ::Vector)
  # because hasportion(Tunable(), NullParameters) == false
- __p = p isa SciMLBase.NullParameters ? _p :
+ __p = p === DiffEqBase.NullParameters() ? _p :
  SciMLStructures.replace(Tunable(), p, _p)
  tape = ReverseDiff.GradientTape((y, __p, [_t])) do u, p, t
  vec(f(u, p, first(t)))

src/backsolve_adjoint.jl

@@ -138,7 +138,7 @@ end
 
  p = parameter_values(sol.prob)
  u0 = state_values(sol.prob)
- if p === nothing || p isa SciMLBase.NullParameters
+ if p === nothing || p === DiffEqBase.NullParameters()
  tunables, repack = p, identity
  else
  tunables, repack, _ = canonicalize(Tunable(), p)

src/concrete_solve.jl

@@ -46,7 +46,7 @@ function inplace_vjp(prob, u0, p, verbose, repack)
 
  vjp = try
  f = unwrapped_f(prob.f)
- if p === nothing || p isa SciMLBase.NullParameters
+ if p === nothing || p === DiffEqBase.NullParameters()
  ReverseDiff.GradientTape((copy(u0), [prob.tspan[1]])) do u, t
  du1 = similar(u, size(u))
  du1 .= 0
@@ -97,7 +97,7 @@ function automatic_sensealg_choice(
  t = prob.tspan[1]
  λ = zero(prob.u0)
 
- if p === nothing || p isa SciMLBase.NullParameters
+ if p === nothing || p === DiffEqBase.NullParameters()
  _dy, back = Zygote.pullback(y) do u
  vec(f(u, p, t))
  end
@@ -120,7 +120,7 @@ function automatic_sensealg_choice(
 
  if vjp == false
  vjp = try
- if p === nothing || p isa SciMLBase.NullParameters
+ if p === nothing || p === DiffEqBase.NullParameters()
  ReverseDiff.gradient((u) -> sum(prob.f(u, p, prob.tspan[1])), u0)
  else
  ReverseDiff.gradient(
@@ -145,7 +145,7 @@ function automatic_sensealg_choice(
  t = prob.tspan[1]
  λ = zero(prob.u0)
 
- if p === nothing || p isa SciMLBase.NullParameters
+ if p === nothing || p === DiffEqBase.NullParameters()
  _dy, back = Tracker.forward(y) do u
  vec(f(u, p, t))
  end
@@ -247,13 +247,13 @@ function DiffEqBase._concrete_solve_adjoint(
  has_cb = false
  end
 
- if !(p === nothing || p isa SciMLBase.NullParameters)
+ if !(p === nothing || p === DiffEqBase.NullParameters())
  if !isscimlstructure(p) && !isfunctor(p)
  throw(SciMLStructuresCompatibilityError())
  end
  end
 
- if p === nothing || p isa SciMLBase.NullParameters
+ if p === nothing || p === DiffEqBase.NullParameters()
  tunables, repack = p, identity
  elseif isscimlstructure(p)
  tunables, repack, aliases = canonicalize(Tunable(), p)
@@ -280,13 +280,13 @@ function DiffEqBase._concrete_solve_adjoint(
  sensealg::Nothing, u0, p,
  originator::SciMLBase.ADOriginator, args...;
  verbose = true, kwargs...)
- if !(p === nothing || p isa SciMLBase.NullParameters)
+ if !(p === nothing || p === DiffEqBase.NullParameters())
  if !isscimlstructure(p) && !isfunctor(p)
  throw(SciMLStructuresCompatibilityError())
  end
  end
 
- if p === nothing || p isa SciMLBase.NullParameters
+ if p === nothing || p === DiffEqBase.NullParameters()
  tunables, repack = p, identity
  elseif isscimlstructure(p)
  tunables, repack, aliases = canonicalize(Tunable(), p)
@@ -376,7 +376,7 @@ function DiffEqBase._concrete_solve_adjoint(
  throw(AdjointSensitivityParameterCompatibilityError())
  end
 
- if p === nothing || p isa SciMLBase.NullParameters
+ if p === nothing || p === DiffEqBase.NullParameters()
  tunables, repack = p, identity
  elseif isscimlstructure(p)
  tunables, repack, aliases = canonicalize(Tunable(), p)
@@ -1175,13 +1175,13 @@ function DiffEqBase._concrete_solve_adjoint(
  throw(EnzymeTrackedRealError())
  end
 
- if !(p === nothing || p isa SciMLBase.NullParameters)
+ if !(p === nothing || p === DiffEqBase.NullParameters())
  if !isscimlstructure(p)
  throw(SciMLStructuresCompatibilityError())
  end
  end
 
- if p === nothing || p isa SciMLBase.NullParameters
+ if p === nothing || p === DiffEqBase.NullParameters()
  tunables, repack = p, identity
  else
  tunables, repack, _ = canonicalize(Tunable(), p)

src/derivative_wrappers.jl

@@ -440,7 +440,7 @@ function _vecjacobian!(dλ, y, λ, p, t, S::TS, isautojacvec::ReverseDiffVJP, dg
  _p = p
  end
 
- if p === nothing || p isa SciMLBase.NullParameters
+ if p === nothing || p === DiffEqBase.NullParameters()
  tunables, repack = p, identity
  else
  tunables, repack, aliases = canonicalize(Tunable(), p)
@@ -660,7 +660,7 @@ function _vecjacobian!(dλ, y, λ, p, t, S::TS, isautojacvec::EnzymeVJP, dgrad,
 
  prob = getprob(S)
  _p = parameter_values(prob)
- if _p === nothing || _p isa SciMLBase.NullParameters
+ if _p === nothing || _p === DiffEqBase.NullParameters()
  tunables, repack = _p, identity
  else
  tunables, repack, _ = canonicalize(Tunable(), _p)
@@ -898,7 +898,7 @@ function _jacNoise!(λ, y, p, t, S::TS, isnoise::ZygoteVJP, dgrad, dλ,
  prob = getprob(S)
  p_ = parameter_values(prob)
 
- if p_ === nothing || p_ isa SciMLBase.NullParameters
+ if p_ === nothing || p_ === DiffEqBase.NullParameters()
  tunables, repack = p_, identity
  else
  tunables, repack, _ = canonicalize(Tunable(), p_)

src/gauss_adjoint.jl

@@ -452,7 +452,7 @@ function vec_pjac!(out, λ, y, t, S::GaussIntegrand)
  f = sol.prob.f
  isautojacvec = get_jacvec(sensealg)
  # y is aliased
- if p === nothing || p isa SciMLBase.NullParameters
+ if p === nothing || p === DiffEqBase.NullParameters()
  tunables, repack = p, identity
  elseif isscimlstructure(p)
  tunables, repack, _ = canonicalize(Tunable(), p)
@@ -546,7 +546,7 @@ function _adjoint_sensitivities(sol, sensealg::GaussAdjoint, alg; t = nothing,
  throw(SciMLStructuresCompatibilityError())
  end
 
- if p === nothing || p isa SciMLBase.NullParameters
+ if p === nothing || p === DiffEqBase.NullParameters()
  tunables, repack = p, identity
  elseif isscimlstructure(p)
  tunables, repack, _ = canonicalize(Tunable(), p)

src/interpolating_adjoint.jl

@@ -287,7 +287,7 @@ end
  p = parameter_values(sol.prob)
  u0 = state_values(sol.prob)
 
- if p === nothing || p isa SciMLBase.NullParameters
+ if p === nothing || p === DiffEqBase.NullParameters()
  tunables, repack = p, identity
  else
  tunables, repack, _ = canonicalize(Tunable(), p)

src/sensitivity_interface.jl

@@ -359,7 +359,7 @@ function adjoint_sensitivities(sol, args...;
  sensealg = InterpolatingAdjoint(),
  verbose = true, kwargs...)
  p = SymbolicIndexingInterface.parameter_values(sol)
- if !(p === nothing || p isa SciMLBase.NullParameters)
+ if !(p === nothing || p === DiffEqBase.NullParameters())
  if !isscimlstructure(p) && !isfunctor(p)
  throw(SciMLStructuresCompatibilityError())
  end
@@ -449,7 +449,7 @@ function _adjoint_sensitivities(sol, sensealg, alg;
  save_everystep = false, save_start = false, saveat = eltype(state_values(sol, 1))[],
  tstops = tstops, abstol = abstol, reltol = reltol, kwargs...)
 
- if mtkp === nothing || mtkp isa SciMLBase.NullParameters
+ if mtkp === nothing || mtkp === DiffEqBase.NullParameters()
  tunables, repack = mtkp, identity
  else
  tunables, _, _ = canonicalize(Tunable(), mtkp)