serialize: move vector2i impl from header

1 files changed, 47 insertions, 0 deletions

diff --git a/serialize/magnum-vector2i.cpp b/serialize/magnum-vector2i.cpp
index 215253f2..0b52d508 100644
--- a/serialize/magnum-vector2i.cpp
+++ b/serialize/magnum-vector2i.cpp
@@ -1,5 +1,6 @@
 #include "magnum-vector2i.hpp"
 #include "compat/exception.hpp"
+#include <nlohmann/json.hpp>
 
 using namespace floormat;
 
@@ -7,3 +8,49 @@ void floormat::Serialize::throw_failed_to_parse_vector2(const std::string& str)
 {
     fm_throw("failed to parse Vector2 '{}'"_cf, str);
 }
+
+void floormat::Serialize::throw_vector2_overflow(const std::string& str)
+{
+    fm_throw("numeric overflow in Vector2 '{}'"_cf, str);
+}
+
+using namespace nlohmann;
+
+template<typename T>
+requires std::is_integral_v<T>
+void nlohmann::adl_serializer<Magnum::Math::Vector2<T>>::to_json(json& j, const Magnum::Math::Vector2<T>& val)
+{
+    char buf[64];
+    using type = std::conditional_t<std::is_signed_v<T>, intmax_t, uintmax_t>;
+    constexpr auto format_string = std::is_signed_v<T> ? "%jd x %jd" : "%ju x %ju";
+    snprintf(buf, sizeof(buf), format_string, (type)val[0], (type)val[1]);
+    j = buf;
+}
+
+template<typename T>
+requires std::is_integral_v<T>
+void nlohmann::adl_serializer<Magnum::Math::Vector2<T>>::from_json(const json& j, Magnum::Math::Vector2<T>& val)
+{
+    using namespace floormat;
+    std::string str = j;
+    using type = std::conditional_t<std::is_signed_v<T>, intmax_t, uintmax_t>;
+    constexpr auto format_string = std::is_signed_v<T> ? "%jd x %jd%n" : "%ju x %ju%n";
+    type x = 0, y = 0;
+    int n = 0;
+    int ret = std::sscanf(str.data(), format_string, &x, &y, &n);
+    if (ret != 2 || (size_t)n != str.size() || x != (T)x || y != (T)y)
+        floormat::Serialize::throw_failed_to_parse_vector2(str);
+    if constexpr(sizeof(T) < sizeof(type))
+        if (x != (type)(T)x || y != (type)(T)y)
+            floormat::Serialize::throw_vector2_overflow(str);
+    val = { (T)x, (T)y };
+}
+
+template struct nlohmann::adl_serializer<Magnum::Math::Vector2<uint8_t>>;
+template struct nlohmann::adl_serializer<Magnum::Math::Vector2<uint16_t>>;
+template struct nlohmann::adl_serializer<Magnum::Math::Vector2<uint32_t>>;
+template struct nlohmann::adl_serializer<Magnum::Math::Vector2<uint64_t>>;
+template struct nlohmann::adl_serializer<Magnum::Math::Vector2<int8_t>>;
+template struct nlohmann::adl_serializer<Magnum::Math::Vector2<int16_t>>;
+template struct nlohmann::adl_serializer<Magnum::Math::Vector2<int32_t>>;
+template struct nlohmann::adl_serializer<Magnum::Math::Vector2<int64_t>>;