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add to_json method for C arrays

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If the array can be converted to basic_json::string_t, the overload
in this commit is not chosen.
This commit is contained in:
Théo DELRIEU 2017-03-16 13:43:53 +01:00
parent 100bf3ef2c
commit dbebf8de47
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GPG Key ID: C64D5E244E08ADC6
3 changed files with 511 additions and 1031 deletions
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1521
src/json.hpp
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7
src/json.hpp.re2c
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@ -800,6 +800,13 @@ void to_json(BasicJsonType& j, const CompatibleObjectType& arr)
external_constructor<value_t::object>::construct(j, arr);
}
template <typename BasicJsonType, typename T, std::size_t N,
enable_if_t<not std::is_constructible<
typename BasicJsonType::string_t, T (&)[N]>::value,
int> = 0>
void to_json(BasicJsonType &j, T (&arr)[N]) {
external_constructor<value_t::array>::construct(j, arr);
}
///////////////
// from_json //

14
test/src/unit-conversions.cpp
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@ -190,6 +190,20 @@ TEST_CASE("value conversion")
#endif
}
SECTION("built-in arrays")
{
const char str[] = "a string";
const int nbs[] = {0, 1, 2};
json j2 = nbs;
json j3 = str;
auto v = j2.get<std::vector<int>>();
auto s = j3.get<std::string>();
CHECK(std::equal(v.begin(), v.end(), std::begin(nbs)));
CHECK(s == str);
}
SECTION("std::deque<json>")
{
std::deque<json> a = j.get<std::deque<json>>();