From 106c7c65b4ae64be1b9a54dfef04d9fa267ae8d7 Mon Sep 17 00:00:00 2001
From: Valentin Kaisermayer <valentin.kaisermayer@best-research.eu>
Date: Wed, 26 Oct 2022 19:58:43 +0200
Subject: [PATCH] fixes empty

---
 lib/OptimizationMOI/src/OptimizationMOI.jl | 4 ++--
 lib/OptimizationMOI/src/moi.jl             | 6 +++---
 lib/OptimizationMOI/src/nlp.jl             | 4 ++--
 3 files changed, 7 insertions(+), 7 deletions(-)

diff --git a/lib/OptimizationMOI/src/OptimizationMOI.jl b/lib/OptimizationMOI/src/OptimizationMOI.jl
index 5480848f8..bad06ccca 100644
--- a/lib/OptimizationMOI/src/OptimizationMOI.jl
+++ b/lib/OptimizationMOI/src/OptimizationMOI.jl
@@ -26,6 +26,7 @@ function _create_new_optimizer(model::MOI.OptimizerWithAttributes)
 end
 
 function _create_new_optimizer(model::MOI.AbstractOptimizer)
+    MOI.empty!(model) # important! ensure that the optimizer is empty
     if MOI.supports_incremental_interface(model)
         return model
     end
@@ -36,8 +37,7 @@ function _create_new_optimizer(model::MOI.AbstractOptimizer)
 end
 
 function __map_optimizer_args(cache,
-                              opt::Union{MOI.AbstractOptimizer, MOI.OptimizerWithAttributes
-                                         };
+                              opt::Union{MOI.AbstractOptimizer, MOI.OptimizerWithAttributes};
                               maxiters::Union{Number, Nothing} = nothing,
                               maxtime::Union{Number, Nothing} = nothing,
                               abstol::Union{Number, Nothing} = nothing,
diff --git a/lib/OptimizationMOI/src/moi.jl b/lib/OptimizationMOI/src/moi.jl
index cd75b1dcb..41e73df47 100644
--- a/lib/OptimizationMOI/src/moi.jl
+++ b/lib/OptimizationMOI/src/moi.jl
@@ -35,7 +35,8 @@ function MOIOptimizationCache(prob::OptimizationProblem, opt)
                                 opt)
 end
 
-function reinit!(cache::MOIOptimizationCache; p = nothing)
+SciMLBase.has_reinit(cache::MOIOptimizationCache) = true
+function SciMLBase.reinit!(cache::MOIOptimizationCache; p = nothing)
     if !isnothing(p)
         cache.p = p
     end
@@ -93,7 +94,6 @@ function SciMLBase.solve(cache::MOIOptimizationCache;
                          kwargs...)
     maxiters = Optimization._check_and_convert_maxiters(maxiters)
     maxtime = Optimization._check_and_convert_maxtime(maxtime)
-    MOI.empty!(cache.opt) # important! ensure that the optimizer is empty
     opt_setup = __map_optimizer_args(cache,
                                      cache.opt;
                                      abstol = abstol,
@@ -308,7 +308,7 @@ end
 
 function is_equality(expr::Expr)
     expr.head == :call || throw(MalformedExprException("$expr"))
-    expr.args[1] == :(=)
+    expr.args[1] in [:(==), :(=)]
 end
 
 function is_inequality(expr::Expr)
diff --git a/lib/OptimizationMOI/src/nlp.jl b/lib/OptimizationMOI/src/nlp.jl
index c9fb7c577..843433cb9 100644
--- a/lib/OptimizationMOI/src/nlp.jl
+++ b/lib/OptimizationMOI/src/nlp.jl
@@ -103,7 +103,8 @@ function MOIOptimizationNLPCache(prob::OptimizationProblem, opt)
     return MOIOptimizationNLPCache(evaluator, opt)
 end
 
-function reinit!(cache::MOIOptimizationNLPCache; p = nothing)
+SciMLBase.has_reinit(cache::MOIOptimizationNLPCache) = true
+function SciMLBase.reinit!(cache::MOIOptimizationNLPCache; p = nothing)
     if !isnothing(p)
         cache.evaluator.reinit_cache.p = p
     end
@@ -326,7 +327,6 @@ function SciMLBase.solve(cache::MOIOptimizationNLPCache;
                          kwargs...)
     maxiters = Optimization._check_and_convert_maxiters(maxiters)
     maxtime = Optimization._check_and_convert_maxtime(maxtime)
-    MOI.empty!(cache.opt) # important! ensure that the optimizer is empty
     opt_setup = __map_optimizer_args(cache,
                                      cache.opt;
                                      abstol = abstol,