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Add utility for accessing private JSON mappings
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The Artist
2025-12-05 14:52:59 +01:00
parent 50418b02e4
commit e147f7fcba
1 changed files with 21 additions and 6 deletions
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27
art/json/marshaling.hxx
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@@ -26,6 +26,21 @@
namespace art::json namespace art::json
{ {
struct access
{
template<typename T>
using json = T::json;
template<typename T>
static
T
create()
{
return T{};
}
};
class marshaling_context_t class marshaling_context_t
{ {
protected: protected:
@@ -208,7 +223,7 @@ namespace art::json
T T
unmarshal(variant const& v, marshaling_context_t* context) unmarshal(variant const& v, marshaling_context_t* context)
{ {
T instance; auto instance = access::create<T>();
do_unmarshal(instance, v, context); do_unmarshal(instance, v, context);
return instance; return instance;
} }
@@ -222,7 +237,7 @@ namespace art::json
void void
do_marshal(variant& v, T const& instance, marshaling_context_t* context) do_marshal(variant& v, T const& instance, marshaling_context_t* context)
{ {
((Bases::json::do_marshal(v, instance, context)), ...); ((access::json<Bases>::do_marshal(v, instance, context)), ...);
First::marshal(v, instance, context); First::marshal(v, instance, context);
((Members::marshal(v, instance, context)), ...); ((Members::marshal(v, instance, context)), ...);
} }
@@ -240,7 +255,7 @@ namespace art::json
void void
do_unmarshal(T& instance, variant const& v, marshaling_context_t* context) do_unmarshal(T& instance, variant const& v, marshaling_context_t* context)
{ {
((Bases::json::do_unmarshal(instance, v, context)), ...); ((access::json<Bases>::do_unmarshal(instance, v, context)), ...);
First::unmarshal(instance, v, context); First::unmarshal(instance, v, context);
((Members::unmarshal(instance, v, context)), ...); ((Members::unmarshal(instance, v, context)), ...);
@@ -253,7 +268,7 @@ namespace art::json
T T
unmarshal(variant const& v, marshaling_context_t* context) unmarshal(variant const& v, marshaling_context_t* context)
{ {
T instance; auto instance = access::create<T>();
do_unmarshal(instance, v, context); do_unmarshal(instance, v, context);
return instance; return instance;
} }
@@ -309,14 +324,14 @@ namespace art::json
variant variant
marshal(T const& instance, marshaling_context_t* context) marshal(T const& instance, marshaling_context_t* context)
{ {
return T::json::marshal(instance, context); return access::json<T>::marshal(instance, context);
} }
static static
T T
unmarshal(variant const& v, marshaling_context_t* context) unmarshal(variant const& v, marshaling_context_t* context)
{ {
return T::json::unmarshal(v, context); return access::json<T>::unmarshal(v, context);
} }
}; };