In to_json(), maintain the "type" of empty maps and vectors

- fix issue #399.
- make to_json() with an empty Map, Vector or Dynamic_Object return a
  similar/compatible type (JSON object or array), rather than "null".
- include the fix for #381 (to_json() support for null values), so
  that can also be unit tested.
This commit is contained in:
Glen Fraser 2018-01-11 19:37:24 +01:00
parent 136539867c
commit 783b8b7361

View File

@ -80,7 +80,7 @@ namespace chaiscript
try {
const std::map<std::string, Boxed_Value> m = chaiscript::boxed_cast<const std::map<std::string, Boxed_Value> &>(t_bv);
json::JSON obj;
json::JSON obj(json::JSON::Class::Object);
for (const auto &o : m)
{
obj[o.first] = to_json_object(o.second);
@ -93,7 +93,7 @@ namespace chaiscript
try {
const std::vector<Boxed_Value> v = chaiscript::boxed_cast<const std::vector<Boxed_Value> &>(t_bv);
json::JSON obj;
json::JSON obj(json::JSON::Class::Array);
for (size_t i = 0; i < v.size(); ++i)
{
obj[i] = to_json_object(v[i]);
@ -132,7 +132,7 @@ namespace chaiscript
try {
const chaiscript::dispatch::Dynamic_Object &o = boxed_cast<const dispatch::Dynamic_Object &>(t_bv);
json::JSON obj;
json::JSON obj(json::JSON::Class::Object);
for (const auto &attr : o.get_attrs())
{
obj[attr.first] = to_json_object(attr.second);
@ -142,6 +142,8 @@ namespace chaiscript
// not a dynamic object
}
if (t_bv.is_null()) return json::JSON(); // a null value
throw std::runtime_error("Unknown object type to convert to JSON");
}