From 0a1895d0bebf8f7f888cd9dc5073087ae45a4476 Mon Sep 17 00:00:00 2001
From: Green Sky <green@g-s.xyz>
Date: Fri, 19 Mar 2021 16:28:40 +0100
Subject: [PATCH] scalar_range json serialization

---
 framework/std_utils/CMakeLists.txt            | 13 ++++++
 .../src/mm/serialize/json_scalar_range2.hpp   | 26 +++++++++++
 framework/std_utils/test/CMakeLists.txt       |  2 +
 .../test/scalar_range2_json_test.cpp          | 43 +++++++++++++++++++
 4 files changed, 84 insertions(+)
 create mode 100644 framework/std_utils/src/mm/serialize/json_scalar_range2.hpp
 create mode 100644 framework/std_utils/test/scalar_range2_json_test.cpp

diff --git a/framework/std_utils/CMakeLists.txt b/framework/std_utils/CMakeLists.txt
index 06fd6fd..fa09f46 100644
--- a/framework/std_utils/CMakeLists.txt
+++ b/framework/std_utils/CMakeLists.txt
@@ -5,6 +5,19 @@ add_library(std_utils INTERFACE)
 
 target_include_directories(std_utils INTERFACE "${CMAKE_CURRENT_SOURCE_DIR}/src")
 
+##############################
+
+# curr only scalar_range
+add_library(std_utils_serialize INTERFACE)
+
+target_include_directories(std_utils_serialize INTERFACE "${CMAKE_CURRENT_SOURCE_DIR}/src")
+
+target_link_libraries(std_utils_serialize INTERFACE
+	nlohmann_json::nlohmann_json
+)
+
+##############################
+
 if (BUILD_TESTING)
 	add_subdirectory(test)
 endif()
diff --git a/framework/std_utils/src/mm/serialize/json_scalar_range2.hpp b/framework/std_utils/src/mm/serialize/json_scalar_range2.hpp
new file mode 100644
index 0000000..d294210
--- /dev/null
+++ b/framework/std_utils/src/mm/serialize/json_scalar_range2.hpp
@@ -0,0 +1,26 @@
+#pragma once
+
+#include <nlohmann/json.hpp>
+
+#include "../scalar_range2.hpp"
+
+namespace MM {
+
+template<typename T>
+void to_json(nlohmann::json& j, const ScalarRange2<T>& r) {
+	j = nlohmann::json{
+		{"min", r.min()},
+		{"max", r.max()}
+	};
+}
+
+template<typename T>
+void from_json(const nlohmann::json& j, ScalarRange2<T>& r) {
+	j.at("min").get_to(r.min());
+	j.at("max").get_to(r.max());
+
+	r.sanitize();
+}
+
+} // MM
+
diff --git a/framework/std_utils/test/CMakeLists.txt b/framework/std_utils/test/CMakeLists.txt
index b02a101..263e4fa 100644
--- a/framework/std_utils/test/CMakeLists.txt
+++ b/framework/std_utils/test/CMakeLists.txt
@@ -1,5 +1,6 @@
 add_executable(std_utils_test
 	scalar_range2_test.cpp
+	scalar_range2_json_test.cpp
 )
 
 target_include_directories(std_utils_test PRIVATE ".")
@@ -9,6 +10,7 @@ target_link_libraries(std_utils_test
 	gmock
 
 	std_utils
+	std_utils_serialize
 )
 
 add_test(NAME std_utils_test COMMAND std_utils_test)
diff --git a/framework/std_utils/test/scalar_range2_json_test.cpp b/framework/std_utils/test/scalar_range2_json_test.cpp
new file mode 100644
index 0000000..2d3bfbb
--- /dev/null
+++ b/framework/std_utils/test/scalar_range2_json_test.cpp
@@ -0,0 +1,43 @@
+#include <gtest/gtest.h>
+
+#include <mm/scalar_range2.hpp>
+#include <mm/serialize/json_scalar_range2.hpp>
+
+#include <cstdint>
+
+TEST(std_utils_scalar_range2_json, signed_integer) {
+	MM::ScalarRange2<int8_t> r8 {-4, 100};
+
+	nlohmann::json j = r8;
+	ASSERT_EQ(j["min"], -4);
+	ASSERT_EQ(j["max"], 100);
+
+	MM::ScalarRange2<int8_t> r8_2 = j;
+	ASSERT_EQ(r8_2.min(), -4);
+	ASSERT_EQ(r8_2.max(), 100);
+}
+
+TEST(std_utils_scalar_range2_json, unsigned_integer) {
+	MM::ScalarRange2<uint8_t> r8 {4, 100};
+
+	nlohmann::json j = r8;
+	ASSERT_EQ(j["min"], 4);
+	ASSERT_EQ(j["max"], 100);
+
+	MM::ScalarRange2<uint8_t> r8_2 = j;
+	ASSERT_EQ(r8_2.min(), 4);
+	ASSERT_EQ(r8_2.max(), 100);
+}
+
+TEST(std_utils_scalar_range2_json, floating) {
+	MM::ScalarRange2<float> r {-4.3f, 100.f};
+
+	nlohmann::json j = r;
+	ASSERT_EQ(j["min"], -4.3f);
+	ASSERT_EQ(j["max"], 100.f);
+
+	MM::ScalarRange2<float> r_2 = j;
+	ASSERT_EQ(r_2.min(), -4.3f);
+	ASSERT_EQ(r_2.max(), 100.f);
+}
+