Merge pull request #949 from SciML/ChrisRackauckas-patch-6

Prepare deprecation path for DiffEqBase.Stats -> SciMLBase.DEStats

Author: ChrisRackauckas

src/stats.jl

@@ -1,58 +1,62 @@
-"""
-$(TYPEDEF)
-
-Statistics from the differential equation solver about the solution process.
-
-## Fields
-
-- nf: Number of function evaluations. If the differential equation is a split function,
-  such as a `SplitFunction` for implicit-explicit (IMEX) integration, then `nf` is the
-  number of function evaluations for the first function (the implicit function)
-- nf2: If the differential equation is a split function, such as a `SplitFunction`
-  for implicit-explicit (IMEX) integration, then `nf2` is the number of function
-  evaluations for the second function, i.e. the function treated explicitly. Otherwise
-  it is zero.
-- nw: The number of W=I-gamma*J (or W=I/gamma-J) matrices constructed during the solving
-  process.
-- nsolve: The number of linear solves `W\b` required for the integration.
-- njacs: Number of Jacobians calculated during the integration.
-- nnonliniter: Total number of iterations for the nonlinear solvers.
-- nnonlinconvfail: Number of nonlinear solver convergence failures.
-- ncondition: Number of calls to the condition function for callbacks.
-- naccept: Number of accepted steps.
-- nreject: Number of rejected steps.
-- maxeig: Maximum eigenvalue over the solution. This is only computed if the
-  method is an auto-switching algorithm.
-"""
-mutable struct Stats
-    nf::Int
-    nf2::Int
-    nw::Int
-    nsolve::Int
-    njacs::Int
-    nnonliniter::Int
-    nnonlinconvfail::Int
-    ncondition::Int
-    naccept::Int
-    nreject::Int
-    maxeig::Float64
-end
-
-Base.@deprecate_binding DEStats Stats false
-
-Stats(x::Int = -1) = Stats(x, x, x, x, x, x, x, x, x, x, 0.0)
-
-function Base.show(io::IO, s::Stats)
-    println(io, summary(s))
-    @printf io "%-50s %-d\n" "Number of function 1 evaluations:" s.nf
-    @printf io "%-50s %-d\n" "Number of function 2 evaluations:" s.nf2
-    @printf io "%-50s %-d\n" "Number of W matrix evaluations:" s.nw
-    @printf io "%-50s %-d\n" "Number of linear solves:" s.nsolve
-    @printf io "%-50s %-d\n" "Number of Jacobians created:" s.njacs
-    @printf io "%-50s %-d\n" "Number of nonlinear solver iterations:" s.nnonliniter
-    @printf io "%-50s %-d\n" "Number of nonlinear solver convergence failures:" s.nnonlinconvfail
-    @printf io "%-50s %-d\n" "Number of rootfind condition calls:" s.ncondition
-    @printf io "%-50s %-d\n" "Number of accepted steps:" s.naccept
-    @printf io "%-50s %-d" "Number of rejected steps:" s.nreject
-    iszero(s.maxeig) || @printf io "\n%-50s %-d" "Maximum eigenvalue recorded:" s.maxeig
+@static if isdefined(SciMLBase, :DEStats)
+  const Stats = SciMLBase.DEStats
+else
+  """
+  $(TYPEDEF)
+  
+  Statistics from the differential equation solver about the solution process.
+  
+  ## Fields
+  
+  - nf: Number of function evaluations. If the differential equation is a split function,
+    such as a `SplitFunction` for implicit-explicit (IMEX) integration, then `nf` is the
+    number of function evaluations for the first function (the implicit function)
+  - nf2: If the differential equation is a split function, such as a `SplitFunction`
+    for implicit-explicit (IMEX) integration, then `nf2` is the number of function
+    evaluations for the second function, i.e. the function treated explicitly. Otherwise
+    it is zero.
+  - nw: The number of W=I-gamma*J (or W=I/gamma-J) matrices constructed during the solving
+    process.
+  - nsolve: The number of linear solves `W\b` required for the integration.
+  - njacs: Number of Jacobians calculated during the integration.
+  - nnonliniter: Total number of iterations for the nonlinear solvers.
+  - nnonlinconvfail: Number of nonlinear solver convergence failures.
+  - ncondition: Number of calls to the condition function for callbacks.
+  - naccept: Number of accepted steps.
+  - nreject: Number of rejected steps.
+  - maxeig: Maximum eigenvalue over the solution. This is only computed if the
+    method is an auto-switching algorithm.
+  """
+  mutable struct Stats
+      nf::Int
+      nf2::Int
+      nw::Int
+      nsolve::Int
+      njacs::Int
+      nnonliniter::Int
+      nnonlinconvfail::Int
+      ncondition::Int
+      naccept::Int
+      nreject::Int
+      maxeig::Float64
+  end
+  
+  Base.@deprecate_binding DEStats Stats false
+  
+  Stats(x::Int = -1) = Stats(x, x, x, x, x, x, x, x, x, x, 0.0)
+  
+  function Base.show(io::IO, s::Stats)
+      println(io, summary(s))
+      @printf io "%-50s %-d\n" "Number of function 1 evaluations:" s.nf
+      @printf io "%-50s %-d\n" "Number of function 2 evaluations:" s.nf2
+      @printf io "%-50s %-d\n" "Number of W matrix evaluations:" s.nw
+      @printf io "%-50s %-d\n" "Number of linear solves:" s.nsolve
+      @printf io "%-50s %-d\n" "Number of Jacobians created:" s.njacs
+      @printf io "%-50s %-d\n" "Number of nonlinear solver iterations:" s.nnonliniter
+      @printf io "%-50s %-d\n" "Number of nonlinear solver convergence failures:" s.nnonlinconvfail
+      @printf io "%-50s %-d\n" "Number of rootfind condition calls:" s.ncondition
+      @printf io "%-50s %-d\n" "Number of accepted steps:" s.naccept
+      @printf io "%-50s %-d" "Number of rejected steps:" s.nreject
+      iszero(s.maxeig) || @printf io "\n%-50s %-d" "Maximum eigenvalue recorded:" s.maxeig
+  end
 end