haraldwolff
/
json
mirror of https://github.com/nlohmann/json.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

🔀 merge branch 'develop' into feature/exceptions_3.0.0

pull/508/head
Niels Lohmann 2017-03-12 20:22:30 +01:00
parent 28dbe4e651 8feaf8dc94
commit 855cdcf05c
No known key found for this signature in database
GPG Key ID: 7F3CEA63AE251B69
8 changed files with 229 additions and 90 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

86
src/json.hpp
View File

@ -468,16 +468,8 @@ struct external_constructor<value_t::number_float>
template<typename BasicJsonType>
static void construct(BasicJsonType& j, typename BasicJsonType::number_float_t val) noexcept
{
// replace infinity and NAN by null
if (not std::isfinite(val))
{
j = BasicJsonType{};
}
else
{
j.m_type = value_t::number_float;
j.m_value = val;
}
j.m_type = value_t::number_float;
j.m_value = val;
j.assert_invariant();
}
};
@ -904,22 +896,15 @@ void from_json(const BasicJsonType& j, typename BasicJsonType::array_t& arr)
}
// forward_list doesn't have an insert method
template<typename BasicJsonType, typename T, typename Allocator>
template<typename BasicJsonType, typename T, typename Allocator,
enable_if_t<std::is_convertible<BasicJsonType, T>::value, int> = 0>
void from_json(const BasicJsonType& j, std::forward_list<T, Allocator>& l)
{
// do not perform the check when user wants to retrieve jsons
// (except when it's null.. ?)
if (j.is_null())
if (not j.is_array())
{
JSON_THROW(type_error(302, "type must be array, but is " + j.type_name()));
}
if (not std::is_same<T, BasicJsonType>::value)
{
if (not j.is_array())
{
JSON_THROW(type_error(302, "type must be array, but is " + j.type_name()));
}
}
for (auto it = j.rbegin(), end = j.rend(); it != end; ++it)
{
l.push_front(it->template get<T>());
@ -951,8 +936,8 @@ auto from_json_array_impl(const BasicJsonType& j, CompatibleArrayType& arr, prio
using std::end;
arr.reserve(j.size());
std::transform(
j.begin(), j.end(), std::inserter(arr, end(arr)), [](const BasicJsonType & i)
std::transform(j.begin(), j.end(),
std::inserter(arr, end(arr)), [](const BasicJsonType & i)
{
// get<BasicJsonType>() returns *this, this won't call a from_json
// method when value_type is BasicJsonType
@ -962,22 +947,15 @@ auto from_json_array_impl(const BasicJsonType& j, CompatibleArrayType& arr, prio
template<typename BasicJsonType, typename CompatibleArrayType,
enable_if_t<is_compatible_array_type<BasicJsonType, CompatibleArrayType>::value and
std::is_convertible<BasicJsonType, typename CompatibleArrayType::value_type>::value and
not std::is_same<typename BasicJsonType::array_t, CompatibleArrayType>::value, int> = 0>
void from_json(const BasicJsonType& j, CompatibleArrayType& arr)
{
if (j.is_null())
if (not j.is_array())
{
JSON_THROW(type_error(302, "type must be array, but is " + j.type_name()));
}
// when T == BasicJsonType, do not check if value_t is correct
if (not std::is_same<typename CompatibleArrayType::value_type, BasicJsonType>::value)
{
if (not j.is_array())
{
JSON_THROW(type_error(302, "type must be array, but is " + j.type_name()));
}
}
from_json_array_impl(j, arr, priority_tag<1> {});
}
@ -6916,6 +6894,13 @@ class basic_json
*/
void dump_float(number_float_t x)
{
// NaN / inf
if (not std::isfinite(x) or std::isnan(x))
{
o.write("null", 4);
return;
}
// special case for 0.0 and -0.0
if (x == 0)
{
@ -8020,6 +8005,35 @@ class basic_json
}
}
/*!
@brief check if the next byte belongs to a string
While parsing a map, the keys must be strings. This function checks if the
current byte is one of the start bytes for a string in MessagePack:
- 0xa0 - 0xbf: fixstr
- 0xd9: str 8
- 0xda: str 16
- 0xdb: str 32
@param[in] v MessagePack serialization
@param[in] idx byte index in @a v to check for a string
@throw std::invalid_argument if `v[idx]` does not belong to a string
*/
static void msgpack_expect_string(const std::vector<uint8_t>& v, size_t idx)
{
check_length(v.size(), 1, idx);
const auto byte = v[idx];
if ((byte >= 0xa0 and byte <= 0xbf) or (byte >= 0xd9 and byte <= 0xdb))
{
return;
}
JSON_THROW(std::invalid_argument("error parsing a msgpack string @ " + std::to_string(idx) + ": " + std::to_string(static_cast<int>(v[idx]))));
}
/*!
@brief create a JSON value from a given MessagePack vector
@ -8054,6 +8068,7 @@ class basic_json
const size_t len = v[current_idx] & 0x0f;
for (size_t i = 0; i < len; ++i)
{
msgpack_expect_string(v, idx);
std::string key = from_msgpack_internal(v, idx);
result[key] = from_msgpack_internal(v, idx);
}
@ -8233,6 +8248,7 @@ class basic_json
idx += 2; // skip 2 size bytes
for (size_t i = 0; i < len; ++i)
{
msgpack_expect_string(v, idx);
std::string key = from_msgpack_internal(v, idx);
result[key] = from_msgpack_internal(v, idx);
}
@ -8246,6 +8262,7 @@ class basic_json
idx += 4; // skip 4 size bytes
for (size_t i = 0; i < len; ++i)
{
msgpack_expect_string(v, idx);
std::string key = from_msgpack_internal(v, idx);
result[key] = from_msgpack_internal(v, idx);
}
@ -11697,11 +11714,10 @@ basic_json_parser_74:
result.m_type = value_t::number_float;
result.m_value = val;
// replace infinity and NAN by null
// throw in case of infinity or NAN
if (not std::isfinite(result.m_value.number_float))
{
result.m_type = value_t::null;
result.m_value = basic_json::json_value();
JSON_THROW(std::out_of_range("number overflow: " + get_token_string()));
}
return true;

86
src/json.hpp.re2c
View File

@ -468,16 +468,8 @@ struct external_constructor<value_t::number_float>
template<typename BasicJsonType>
static void construct(BasicJsonType& j, typename BasicJsonType::number_float_t val) noexcept
{
// replace infinity and NAN by null
if (not std::isfinite(val))
{
j = BasicJsonType{};
}
else
{
j.m_type = value_t::number_float;
j.m_value = val;
}
j.m_type = value_t::number_float;
j.m_value = val;
j.assert_invariant();
}
};
@ -904,22 +896,15 @@ void from_json(const BasicJsonType& j, typename BasicJsonType::array_t& arr)
}
// forward_list doesn't have an insert method
template<typename BasicJsonType, typename T, typename Allocator>
template<typename BasicJsonType, typename T, typename Allocator,
enable_if_t<std::is_convertible<BasicJsonType, T>::value, int> = 0>
void from_json(const BasicJsonType& j, std::forward_list<T, Allocator>& l)
{
// do not perform the check when user wants to retrieve jsons
// (except when it's null.. ?)
if (j.is_null())
if (not j.is_array())
{
JSON_THROW(type_error(302, "type must be array, but is " + j.type_name()));
}
if (not std::is_same<T, BasicJsonType>::value)
{
if (not j.is_array())
{
JSON_THROW(type_error(302, "type must be array, but is " + j.type_name()));
}
}
for (auto it = j.rbegin(), end = j.rend(); it != end; ++it)
{
l.push_front(it->template get<T>());
@ -951,8 +936,8 @@ auto from_json_array_impl(const BasicJsonType& j, CompatibleArrayType& arr, prio
using std::end;
arr.reserve(j.size());
std::transform(
j.begin(), j.end(), std::inserter(arr, end(arr)), [](const BasicJsonType & i)
std::transform(j.begin(), j.end(),
std::inserter(arr, end(arr)), [](const BasicJsonType & i)
{
// get<BasicJsonType>() returns *this, this won't call a from_json
// method when value_type is BasicJsonType
@ -962,22 +947,15 @@ auto from_json_array_impl(const BasicJsonType& j, CompatibleArrayType& arr, prio
template<typename BasicJsonType, typename CompatibleArrayType,
enable_if_t<is_compatible_array_type<BasicJsonType, CompatibleArrayType>::value and
std::is_convertible<BasicJsonType, typename CompatibleArrayType::value_type>::value and
not std::is_same<typename BasicJsonType::array_t, CompatibleArrayType>::value, int> = 0>
void from_json(const BasicJsonType& j, CompatibleArrayType& arr)
{
if (j.is_null())
if (not j.is_array())
{
JSON_THROW(type_error(302, "type must be array, but is " + j.type_name()));
}
// when T == BasicJsonType, do not check if value_t is correct
if (not std::is_same<typename CompatibleArrayType::value_type, BasicJsonType>::value)
{
if (not j.is_array())
{
JSON_THROW(type_error(302, "type must be array, but is " + j.type_name()));
}
}
from_json_array_impl(j, arr, priority_tag<1> {});
}
@ -6916,6 +6894,13 @@ class basic_json
*/
void dump_float(number_float_t x)
{
// NaN / inf
if (not std::isfinite(x) or std::isnan(x))
{
o.write("null", 4);
return;
}
// special case for 0.0 and -0.0
if (x == 0)
{
@ -8020,6 +8005,35 @@ class basic_json
}
}
/*!
@brief check if the next byte belongs to a string
While parsing a map, the keys must be strings. This function checks if the
current byte is one of the start bytes for a string in MessagePack:
- 0xa0 - 0xbf: fixstr
- 0xd9: str 8
- 0xda: str 16
- 0xdb: str 32
@param[in] v MessagePack serialization
@param[in] idx byte index in @a v to check for a string
@throw std::invalid_argument if `v[idx]` does not belong to a string
*/
static void msgpack_expect_string(const std::vector<uint8_t>& v, size_t idx)
{
check_length(v.size(), 1, idx);
const auto byte = v[idx];
if ((byte >= 0xa0 and byte <= 0xbf) or (byte >= 0xd9 and byte <= 0xdb))
{
return;
}
JSON_THROW(std::invalid_argument("error parsing a msgpack string @ " + std::to_string(idx) + ": " + std::to_string(static_cast<int>(v[idx]))));
}
/*!
@brief create a JSON value from a given MessagePack vector
@ -8054,6 +8068,7 @@ class basic_json
const size_t len = v[current_idx] & 0x0f;
for (size_t i = 0; i < len; ++i)
{
msgpack_expect_string(v, idx);
std::string key = from_msgpack_internal(v, idx);
result[key] = from_msgpack_internal(v, idx);
}
@ -8233,6 +8248,7 @@ class basic_json
idx += 2; // skip 2 size bytes
for (size_t i = 0; i < len; ++i)
{
msgpack_expect_string(v, idx);
std::string key = from_msgpack_internal(v, idx);
result[key] = from_msgpack_internal(v, idx);
}
@ -8246,6 +8262,7 @@ class basic_json
idx += 4; // skip 4 size bytes
for (size_t i = 0; i < len; ++i)
{
msgpack_expect_string(v, idx);
std::string key = from_msgpack_internal(v, idx);
result[key] = from_msgpack_internal(v, idx);
}
@ -10730,11 +10747,10 @@ class basic_json
result.m_type = value_t::number_float;
result.m_value = val;
// replace infinity and NAN by null
// throw in case of infinity or NAN
if (not std::isfinite(result.m_value.number_float))
{
result.m_type = value_t::null;
result.m_value = basic_json::json_value();
JSON_THROW(std::out_of_range("number overflow: " + get_token_string()));
}
return true;

14
test/src/unit-cbor.cpp
View File

@ -744,13 +744,17 @@ TEST_CASE("CBOR")
SECTION("infinity")
{
json j = json::from_cbor(std::vector<uint8_t>({0xf9, 0x7c, 0x00}));
CHECK(j == nullptr);
json::number_float_t d = j;
CHECK(not std::isfinite(d));
CHECK(j.dump() == "null");
}
SECTION("NaN")
{
json j = json::from_cbor(std::vector<uint8_t>({0xf9, 0x7c, 0x01}));
CHECK(j == nullptr);
json::number_float_t d = j;
CHECK(std::isnan(d));
CHECK(j.dump() == "null");
}
}
}
@ -1430,7 +1434,7 @@ TEST_CASE("CBOR roundtrips", "[hide]")
"test/data/nst_json_testsuite/test_parsing/y_number_after_space.json",
"test/data/nst_json_testsuite/test_parsing/y_number_double_close_to_zero.json",
"test/data/nst_json_testsuite/test_parsing/y_number_double_huge_neg_exp.json",
"test/data/nst_json_testsuite/test_parsing/y_number_huge_exp.json",
//"test/data/nst_json_testsuite/test_parsing/y_number_huge_exp.json",
"test/data/nst_json_testsuite/test_parsing/y_number_int_with_exp.json",
"test/data/nst_json_testsuite/test_parsing/y_number_minus_zero.json",
"test/data/nst_json_testsuite/test_parsing/y_number_negative_int.json",
@ -1442,9 +1446,9 @@ TEST_CASE("CBOR roundtrips", "[hide]")
"test/data/nst_json_testsuite/test_parsing/y_number_real_exponent.json",
"test/data/nst_json_testsuite/test_parsing/y_number_real_fraction_exponent.json",
"test/data/nst_json_testsuite/test_parsing/y_number_real_neg_exp.json",
"test/data/nst_json_testsuite/test_parsing/y_number_real_neg_overflow.json",
//"test/data/nst_json_testsuite/test_parsing/y_number_real_neg_overflow.json",
"test/data/nst_json_testsuite/test_parsing/y_number_real_pos_exponent.json",
"test/data/nst_json_testsuite/test_parsing/y_number_real_pos_overflow.json",
//"test/data/nst_json_testsuite/test_parsing/y_number_real_pos_overflow.json",
"test/data/nst_json_testsuite/test_parsing/y_number_real_underflow.json",
"test/data/nst_json_testsuite/test_parsing/y_number_simple_int.json",
"test/data/nst_json_testsuite/test_parsing/y_number_simple_real.json",

4
test/src/unit-class_parser.cpp
View File

@ -276,7 +276,9 @@ TEST_CASE("parser class")
SECTION("overflow")
{
CHECK(json::parser("1.18973e+4932").parse() == json());
// overflows during parsing yield an exception
CHECK_THROWS_AS(json::parser("1.18973e+4932").parse() == json(), std::out_of_range);
CHECK_THROWS_WITH(json::parser("1.18973e+4932").parse() == json(), "number overflow: 1.18973e+4932");
}
SECTION("invalid numbers")

12
test/src/unit-constructor1.cpp
View File

@ -702,11 +702,17 @@ TEST_CASE("constructors")
SECTION("infinity")
{
// infinity is stored as null
// should change in the future: https://github.com/nlohmann/json/issues/388
// infinity is stored properly, but serialized to null
json::number_float_t n(std::numeric_limits<json::number_float_t>::infinity());
json j(n);
CHECK(j.type() == json::value_t::null);
CHECK(j.type() == json::value_t::number_float);
// check round trip of infinity
json::number_float_t d = j;
CHECK(d == n);
// check that inf is serialized to null
CHECK(j.dump() == "null");
}
}

6
test/src/unit-msgpack.cpp
View File

@ -1200,7 +1200,7 @@ TEST_CASE("MessagePack roundtrips", "[hide]")
"test/data/nst_json_testsuite/test_parsing/y_number_after_space.json",
"test/data/nst_json_testsuite/test_parsing/y_number_double_close_to_zero.json",
"test/data/nst_json_testsuite/test_parsing/y_number_double_huge_neg_exp.json",
"test/data/nst_json_testsuite/test_parsing/y_number_huge_exp.json",
//"test/data/nst_json_testsuite/test_parsing/y_number_huge_exp.json",
"test/data/nst_json_testsuite/test_parsing/y_number_int_with_exp.json",
"test/data/nst_json_testsuite/test_parsing/y_number_minus_zero.json",
"test/data/nst_json_testsuite/test_parsing/y_number_negative_int.json",
@ -1212,9 +1212,9 @@ TEST_CASE("MessagePack roundtrips", "[hide]")
"test/data/nst_json_testsuite/test_parsing/y_number_real_exponent.json",
"test/data/nst_json_testsuite/test_parsing/y_number_real_fraction_exponent.json",
"test/data/nst_json_testsuite/test_parsing/y_number_real_neg_exp.json",
"test/data/nst_json_testsuite/test_parsing/y_number_real_neg_overflow.json",
//"test/data/nst_json_testsuite/test_parsing/y_number_real_neg_overflow.json",
"test/data/nst_json_testsuite/test_parsing/y_number_real_pos_exponent.json",
"test/data/nst_json_testsuite/test_parsing/y_number_real_pos_overflow.json",
//"test/data/nst_json_testsuite/test_parsing/y_number_real_pos_overflow.json",
"test/data/nst_json_testsuite/test_parsing/y_number_real_underflow.json",
"test/data/nst_json_testsuite/test_parsing/y_number_simple_int.json",
"test/data/nst_json_testsuite/test_parsing/y_number_simple_real.json",

85
test/src/unit-regression.cpp
View File

@ -32,6 +32,7 @@ SOFTWARE.
using nlohmann::json;
#include <fstream>
#include <list>
TEST_CASE("regression tests")
{
@ -48,6 +49,7 @@ TEST_CASE("regression tests")
SECTION("issue #70 - Handle infinity and NaN cases")
{
/*
SECTION("NAN value")
{
CHECK(json(NAN) == json());
@ -59,6 +61,36 @@ TEST_CASE("regression tests")
CHECK(json(INFINITY) == json());
CHECK(json(json::number_float_t(INFINITY)) == json());
}
*/
// With 3.0.0, the semantics of this changed: NAN and infinity are
// stored properly inside the JSON value (no exception or conversion
// to null), but are serialized as null.
SECTION("NAN value")
{
json j1 = NAN;
CHECK(j1.is_number_float());
json::number_float_t f1 = j1;
CHECK(std::isnan(f1));
json j2 = json::number_float_t(NAN);
CHECK(j2.is_number_float());
json::number_float_t f2 = j2;
CHECK(std::isnan(f2));
}
SECTION("infinity")
{
json j1 = INFINITY;
CHECK(j1.is_number_float());
json::number_float_t f1 = j1;
CHECK(not std::isfinite(f1));
json j2 = json::number_float_t(INFINITY);
CHECK(j2.is_number_float());
json::number_float_t f2 = j2;
CHECK(not std::isfinite(f2));
}
}
SECTION("pull request #71 - handle enum type")
@ -558,8 +590,8 @@ TEST_CASE("regression tests")
SECTION("issue #329 - serialized value not always can be parsed")
{
json j = json::parse("22e2222");
CHECK(j == json());
CHECK_THROWS_AS(json::parse("22e2222"), std::out_of_range);
CHECK_THROWS_WITH(json::parse("22e2222"), "number overflow: 22e2222");
}
SECTION("issue #366 - json::parse on failed stream gets stuck")
@ -834,6 +866,55 @@ TEST_CASE("regression tests")
CHECK(s1 == s2);
}
SECTION("issue #473 - inconsistent behavior in conversion to array type")
{
json j_array = {1, 2, 3, 4};
json j_number = 42;
json j_null = nullptr;
SECTION("std::vector")
{
auto create = [](const json & j)
{
std::vector<int> v = j;
};
CHECK_NOTHROW(create(j_array));
CHECK_THROWS_AS(create(j_number), json::type_error);
CHECK_THROWS_WITH(create(j_number), "[json.exception.type_error.302] type must be array, but is number");
CHECK_THROWS_AS(create(j_null), json::type_error);
CHECK_THROWS_WITH(create(j_null), "[json.exception.type_error.302] type must be array, but is null");
}
SECTION("std::list")
{
auto create = [](const json & j)
{
std::list<int> v = j;
};
CHECK_NOTHROW(create(j_array));
CHECK_THROWS_AS(create(j_number), json::type_error);
CHECK_THROWS_WITH(create(j_number), "[json.exception.type_error.302] type must be array, but is number");
CHECK_THROWS_AS(create(j_null), json::type_error);
CHECK_THROWS_WITH(create(j_null), "[json.exception.type_error.302] type must be array, but is null");
}
SECTION("std::forward_list")
{
auto create = [](const json & j)
{
std::forward_list<int> v = j;
};
CHECK_NOTHROW(create(j_array));
CHECK_THROWS_AS(create(j_number), json::type_error);
CHECK_THROWS_WITH(create(j_number), "[json.exception.type_error.302] type must be array, but is number");
CHECK_THROWS_AS(create(j_null), json::type_error);
CHECK_THROWS_WITH(create(j_null), "[json.exception.type_error.302] type must be array, but is null");
}
}
SECTION("issue #486 - json::value_t can't be a map's key type in VC++ 2015")
{
// the code below must compile with MSVC

26
test/src/unit-testsuites.cpp
View File

@ -460,7 +460,6 @@ TEST_CASE("nst's JSONTestSuite")
"test/data/nst_json_testsuite/test_parsing/y_number_after_space.json",
"test/data/nst_json_testsuite/test_parsing/y_number_double_close_to_zero.json",
"test/data/nst_json_testsuite/test_parsing/y_number_double_huge_neg_exp.json",
"test/data/nst_json_testsuite/test_parsing/y_number_huge_exp.json",
"test/data/nst_json_testsuite/test_parsing/y_number_int_with_exp.json",
"test/data/nst_json_testsuite/test_parsing/y_number_minus_zero.json",
"test/data/nst_json_testsuite/test_parsing/y_number_negative_int.json",
@ -472,9 +471,7 @@ TEST_CASE("nst's JSONTestSuite")
"test/data/nst_json_testsuite/test_parsing/y_number_real_exponent.json",
"test/data/nst_json_testsuite/test_parsing/y_number_real_fraction_exponent.json",
"test/data/nst_json_testsuite/test_parsing/y_number_real_neg_exp.json",
"test/data/nst_json_testsuite/test_parsing/y_number_real_neg_overflow.json",
"test/data/nst_json_testsuite/test_parsing/y_number_real_pos_exponent.json",
"test/data/nst_json_testsuite/test_parsing/y_number_real_pos_overflow.json",
"test/data/nst_json_testsuite/test_parsing/y_number_real_underflow.json",
"test/data/nst_json_testsuite/test_parsing/y_number_simple_int.json",
"test/data/nst_json_testsuite/test_parsing/y_number_simple_real.json",
@ -765,9 +762,6 @@ TEST_CASE("nst's JSONTestSuite")
{
for (auto filename :
{
// we currently do not limit exponents
"test/data/nst_json_testsuite/test_parsing/i_number_neg_int_huge_exp.json",
"test/data/nst_json_testsuite/test_parsing/i_number_pos_double_huge_exp.json",
// we do not pose a limit on nesting
"test/data/nst_json_testsuite/test_parsing/i_structure_500_nested_arrays.json",
// we silently ignore BOMs
@ -787,6 +781,26 @@ TEST_CASE("nst's JSONTestSuite")
}
}
// numbers that overflow during parsing
SECTION("i/y -> n (out of range)")
{
for (auto filename :
{
"test/data/nst_json_testsuite/test_parsing/i_number_neg_int_huge_exp.json",
"test/data/nst_json_testsuite/test_parsing/i_number_pos_double_huge_exp.json",
"test/data/nst_json_testsuite/test_parsing/y_number_huge_exp.json",
"test/data/nst_json_testsuite/test_parsing/y_number_real_neg_overflow.json",
"test/data/nst_json_testsuite/test_parsing/y_number_real_pos_overflow.json"
}
)
{
CAPTURE(filename);
std::ifstream f(filename);
json j;
CHECK_THROWS_AS(j << f, std::out_of_range);
}
}
SECTION("i -> n")
{
for (auto filename :