Update

Author: odow

Project.toml

@@ -28,6 +28,7 @@ CodecZlib = "~0.6, 0.7"
 DataStructures = "0.18"
 ForwardDiff = "0.5, 0.6, 0.7, 0.8, 0.9, 0.10"
 JSON = "~0.21"
+JSON3 = "1"
 JSONSchema = "1"
 LinearAlgebra = "<0.0.1, 1.6"
 MutableArithmetics = "1"

src/FileFormats/MOF/MOF.jl

@@ -7,7 +7,7 @@
 module MOF
 
 import ..FileFormats
-import JSON
+import JSON3
 import MathOptInterface as MOI
 
 """

src/FileFormats/MOF/read.jl

@@ -13,7 +13,7 @@ function Base.read!(io::IO, model::Model)
     if !MOI.is_empty(model)
         error("Cannot read model from file as destination model is not empty.")
     end
-    object = JSON.parse(io; dicttype = Dict{String,Any})
+    object = JSON3.read(io, Dict{String,Any})
     file_version = _parse_mof_version(object["version"]::Dict{String,Any})
     if !(file_version in _SUPPORTED_VERSIONS)
         version = _SUPPORTED_VERSIONS[1]

src/FileFormats/MOF/write.jl

@@ -3,7 +3,6 @@
 #
 # 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.
-using JSON3
 
 """
     Base.write(io::IO, model::FileFormats.MOF.Model)
@@ -30,7 +29,7 @@ function Base.write(io::IO, model::Model)
         objective = objective,
         constraints = constraints,
     )
-    Base.write(io, JSON3.write(object))
+    JSON3.write(io, object)
     return
 end
 

test/FileFormats/MOF/MOF.jl

@@ -8,16 +8,19 @@ module TestMOF
 
 using Test
 
-import JSON
+import JSON3
 import JSONSchema
 import MathOptInterface as MOI
 
 const MOF = MOI.FileFormats.MOF
 
 const TEST_MOF_FILE = "test.mof.json"
 
-const SCHEMA =
-    JSONSchema.Schema(JSON.parsefile(MOI.FileFormats.MOF.SCHEMA_PATH))
+const SCHEMA = JSONSchema.Schema(
+    open(MOI.FileFormats.MOF.SCHEMA_PATH, "r") do io
+        return JSON3.read(io, Dict{String,Any})
+    end,
+)
 
 function runtests()
     for name in names(@__MODULE__, all = true)
@@ -39,7 +42,7 @@ function _validate(filename::String)
         "r",
         MOI.FileFormats.AutomaticCompression(),
     ) do io
-        object = JSON.parse(io)
+        object = JSON3.read(io, Dict{String,Any})
         ret = JSONSchema.validate(SCHEMA, object)
         if ret !== nothing
             error(