code/libcode-json
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Throw on missing non-optional object key

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This commit is contained in:
G.H.O.S.T 2024-12-27 01:38:37 +01:00
parent 67112e3983
commit 4cbc64a7a4
Signed by: G.H.O.S.T
GPG Key ID: 3BD93EABD1407B82
1 changed files with 27 additions and 1 deletions
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28
code/json/marshaling.hxx
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@ -3,6 +3,7 @@
#include <code/json/optional.hxx>
#include <code/json/pointer.hxx>
#include <code/json/traits.hxx>
#include <code/json/variant.hxx>
#include <chrono>
@ -41,11 +42,17 @@ namespace code::json
std::copy_n(str, N, name);
}
operator std::string const() const
std::string const
str() const
{
return name;
}
operator std::string const() const
{
return str();
}
char name[N];
};
@ -67,6 +74,10 @@ namespace code::json
using T = member_traits<decltype(Member)>::class_type;
using M = member_traits<decltype(Member)>::member_type;
static constexpr bool is_optional{
is_optional_v<M>
};
static
void
marshal(variant& v, T const& instance, marshaling_context_t* context)
@ -78,11 +89,22 @@ namespace code::json
void
unmarshal(T& instance, variant const& v, marshaling_context_t* context)
{
if (!v.contains(Name.str())) {
if (is_optional) {
return;
}
throw std::runtime_error{"missing field '" + Name.str() + "'"};
}
instance.*Member = marshaling_traits<M>::unmarshal(v.get(Name), context);
}
struct pointer_t
{
using T = member_traits<decltype(Member)>::class_type;
using M = member_traits<decltype(Member)>::member_type;
static pointer const&
ptr()
{
@ -104,6 +126,10 @@ namespace code::json
auto ptr_v = ptr().read(v);
if (!ptr_v) {
if (is_optional) {
return;
}
throw std::runtime_error{ "missing field '" + to_string(ptr()) + "'" };
}