From 844c85253d1347634014db3d39a3894ac19b091d Mon Sep 17 00:00:00 2001
From: odow <o.dowson@gmail.com>
Date: Mon, 5 Feb 2024 16:18:35 +1300
Subject: [PATCH] WIP: add FileFormats.Optimizer

---
 src/FileFormats/FileFormats.jl |  2 ++
 src/FileFormats/Optimizer.jl   | 60 ++++++++++++++++++++++++++++++++++
 2 files changed, 62 insertions(+)
 create mode 100644 src/FileFormats/Optimizer.jl

diff --git a/src/FileFormats/FileFormats.jl b/src/FileFormats/FileFormats.jl
index 1607bb76f0..bd9ff83ffe 100644
--- a/src/FileFormats/FileFormats.jl
+++ b/src/FileFormats/FileFormats.jl
@@ -20,6 +20,8 @@ include("MPS/MPS.jl")
 include("NL/NL.jl")
 include("SDPA/SDPA.jl")
 
+include("Optimizer.jl")
+
 """
     FileFormat
 
diff --git a/src/FileFormats/Optimizer.jl b/src/FileFormats/Optimizer.jl
new file mode 100644
index 0000000000..d733c1cc8a
--- /dev/null
+++ b/src/FileFormats/Optimizer.jl
@@ -0,0 +1,60 @@
+# Copyright (c) 2017: Miles Lubin and contributors
+# Copyright (c) 2017: Google Inc.
+#
+# Use of this source code is governed by an MIT-style license that can be found
+# in the LICENSE.md file or at https://opensource.org/licenses/MIT.
+
+struct Optimizer{M<:MOI.ModelLike} <: MOI.AbstractOptimizer
+    inner::M
+end
+
+function Optimizer(; kwargs...)
+    model = Model(; kwargs...)
+    return Optimizer{typeof(model)}(model)
+end
+
+MOI.is_empty(model::Optimizer) = MOI.is_empty(model.inner)
+
+MOI.empty!(model::Optimizer) = MOI.empty!(model.inner)
+
+MOI.add_variable(model::Optimizer) = MOI.add_variable(model.inner)
+
+function MOI.supports(model::Optimizer, attr::MOI.AbstractModelAttribute)
+    return MOI.supports(model.inner, attr)
+end
+
+function MOI.get(model::Optimizer, attr::MOI.AbstractModelAttribute)
+    return MOI.get(model.inner, attr)
+end
+
+function MOI.set(model::Optimizer, attr::MOI.AbstractModelAttribute, value)
+    return MOI.set(model.inner, attr, value)
+end
+
+function MOI.get(model::Optimizer, attr::MOI.AbstractOptimizerAttribute)
+    return MOI.get(model.inner, attr)
+end
+
+function MOI.get(model::Optimizer, ::MOI.SolverName)
+    return "FileFormats.Optimizer"
+end
+
+function MOI.supports_constraint(
+    model::Optimizer,
+    ::Type{F},
+    ::Type{S},
+) where {F<:MOI.AbstractFunction,S<:MOI.AbstractSet}
+    return MOI.supports_constraint(model.inner, F, S)
+end
+
+function MOI.add_constraint(
+    model::Optimizer,
+    f::MOI.AbstractFunction,
+    s::MOI.AbstractSet,
+)
+    return MOI.add_constraint(model.inner, f, s)
+end
+
+function MOI.write_to_file(model::Optimizer, filename::String)
+    return MOI.write_to_file(model.inner, filename)
+end