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Merge pull request #2251 from nlohmann/fix_2181

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Fix regression from #2181
This commit is contained in:
Niels Lohmann 2020-07-09 07:33:03 +02:00 committed by GitHub
commit 0306525cdb
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4 changed files with 27 additions and 18 deletions
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12
include/nlohmann/json.hpp
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@ -3785,7 +3785,7 @@ class basic_json
template<class ValueType, typename std::enable_if<
std::is_convertible<basic_json_t, ValueType>::value
and not std::is_same<value_t, ValueType>::value, int>::type = 0>
ValueType value(const typename object_t::key_type& key, ValueType && default_value) const
ValueType value(const typename object_t::key_type& key, const ValueType& default_value) const
{
// at only works for objects
if (JSON_HEDLEY_LIKELY(is_object()))
@ -3797,7 +3797,7 @@ class basic_json
return *it;
}
return std::move(default_value);
return default_value;
}
JSON_THROW(type_error::create(306, "cannot use value() with " + std::string(type_name())));
@ -3809,7 +3809,7 @@ class basic_json
*/
string_t value(const typename object_t::key_type& key, const char* default_value) const
{
return value(key, std::move(string_t(default_value)));
return value(key, string_t(default_value));
}
/*!
@ -3857,7 +3857,7 @@ class basic_json
*/
template<class ValueType, typename std::enable_if<
std::is_convertible<basic_json_t, ValueType>::value, int>::type = 0>
ValueType value(const json_pointer& ptr, ValueType && default_value) const
ValueType value(const json_pointer& ptr, const ValueType& default_value) const
{
// at only works for objects
if (JSON_HEDLEY_LIKELY(is_object()))
@ -3869,7 +3869,7 @@ class basic_json
}
JSON_INTERNAL_CATCH (out_of_range&)
{
return std::move(default_value);
return default_value;
}
}
@ -3883,7 +3883,7 @@ class basic_json
JSON_HEDLEY_NON_NULL(3)
string_t value(const json_pointer& ptr, const char* default_value) const
{
return value(ptr, std::move(string_t(default_value)));
return value(ptr, string_t(default_value));
}
/*!

12
single_include/nlohmann/json.hpp
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@ -19715,7 +19715,7 @@ class basic_json
template<class ValueType, typename std::enable_if<
std::is_convertible<basic_json_t, ValueType>::value
and not std::is_same<value_t, ValueType>::value, int>::type = 0>
ValueType value(const typename object_t::key_type& key, ValueType && default_value) const
ValueType value(const typename object_t::key_type& key, const ValueType& default_value) const
{
// at only works for objects
if (JSON_HEDLEY_LIKELY(is_object()))
@ -19727,7 +19727,7 @@ class basic_json
return *it;
}
return std::move(default_value);
return default_value;
}
JSON_THROW(type_error::create(306, "cannot use value() with " + std::string(type_name())));
@ -19739,7 +19739,7 @@ class basic_json
*/
string_t value(const typename object_t::key_type& key, const char* default_value) const
{
return value(key, std::move(string_t(default_value)));
return value(key, string_t(default_value));
}
/*!
@ -19787,7 +19787,7 @@ class basic_json
*/
template<class ValueType, typename std::enable_if<
std::is_convertible<basic_json_t, ValueType>::value, int>::type = 0>
ValueType value(const json_pointer& ptr, ValueType && default_value) const
ValueType value(const json_pointer& ptr, const ValueType& default_value) const
{
// at only works for objects
if (JSON_HEDLEY_LIKELY(is_object()))
@ -19799,7 +19799,7 @@ class basic_json
}
JSON_INTERNAL_CATCH (out_of_range&)
{
return std::move(default_value);
return default_value;
}
}
@ -19813,7 +19813,7 @@ class basic_json
JSON_HEDLEY_NON_NULL(3)
string_t value(const json_pointer& ptr, const char* default_value) const
{
return value(ptr, std::move(string_t(default_value)));
return value(ptr, string_t(default_value));
}
/*!

9
test/src/unit-regression.cpp
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@ -1945,6 +1945,15 @@ TEST_CASE("regression tests")
)
);
}
SECTION("PR #2181 - regression bug with lvalue")
{
// see https://github.com/nlohmann/json/pull/2181#issuecomment-653326060
json j{{"x", "test"}};
std::string defval = "default value";
auto val = j.value("x", defval);
auto val2 = j.value("y", defval);
}
}
#if not defined(JSON_NOEXCEPTION)

12
test/src/unit-udt_macro.cpp
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@ -60,9 +60,9 @@ class person_with_private_data
class person_without_private_data_1
{
public:
std::string name = "";
int age = 0;
json metadata = nullptr;
std::string name = "";
int age = 0;
json metadata = nullptr;
bool operator==(const person_without_private_data_1& rhs) const
{
@ -82,9 +82,9 @@ class person_without_private_data_1
class person_without_private_data_2
{
public:
std::string name = "";
int age = 0;
json metadata = nullptr;
std::string name = "";
int age = 0;
json metadata = nullptr;
bool operator==(const person_without_private_data_2& rhs) const
{