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stringlengths 30
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doc/examples/basic_json__size_type_basic_json.cpp/main
int main()
{
// create an array by creating copies of a JSON value
json value = "Hello";
json array_0 = json(0, value);
json array_1 = json(1, value);
json array_5 = json(5, value);
// serialize the JSON arrays
std::cout << array_0 << '\n';
std::cout << array_1 << '\n';
std::cout << array_5 << '\n';
}
|
negative_train_query0_00198
|
|
doc/examples/insert.cpp/main
int main()
{
// create a JSON array
json v = {1, 2, 3, 4};
// insert number 10 before number 3
auto new_pos = v.insert(v.begin() + 2, 10);
// output new array and result of insert call
std::cout << *new_pos << '\n';
std::cout << v << '\n';
}
|
negative_train_query0_00199
|
|
doc/examples/get_to.cpp/main
int main()
{
// create a JSON value with different types
json json_types =
{
{"boolean", true},
{
"number", {
{"integer", 42},
{"floating-point", 17.23}
}
},
{"string", "Hello, world!"},
{"array", {1, 2, 3, 4, 5}},
{"null", nullptr}
};
bool v1;
int v2;
short v3;
float v4;
int v5;
std::string v6;
std::vector<short> v7;
std::unordered_map<std::string, json> v8;
// use explicit conversions
json_types["boolean"].get_to(v1);
json_types["number"]["integer"].get_to(v2);
json_types["number"]["integer"].get_to(v3);
json_types["number"]["floating-point"].get_to(v4);
json_types["number"]["floating-point"].get_to(v5);
json_types["string"].get_to(v6);
json_types["array"].get_to(v7);
json_types.get_to(v8);
// print the conversion results
std::cout << v1 << '\n';
std::cout << v2 << ' ' << v3 << '\n';
std::cout << v4 << ' ' << v5 << '\n';
std::cout << v6 << '\n';
for (auto i : v7)
{
std::cout << i << ' ';
}
std::cout << "\n\n";
for (auto i : v8)
{
std::cout << i.first << ": " << i.second << '\n';
}
}
|
negative_train_query0_00200
|
|
doc/examples/is_discarded.cpp/main
int main()
{
// create JSON values
json j_null;
json j_boolean = true;
json j_number_integer = 17;
json j_number_unsigned_integer = 12345678987654321u;
json j_number_float = 23.42;
json j_object = {{"one", 1}, {"two", 2}};
json j_array = {1, 2, 4, 8, 16};
json j_string = "Hello, world";
// call is_discarded()
std::cout << std::boolalpha;
std::cout << j_null.is_discarded() << '\n';
std::cout << j_boolean.is_discarded() << '\n';
std::cout << j_number_integer.is_discarded() << '\n';
std::cout << j_number_unsigned_integer.is_discarded() << '\n';
std::cout << j_number_float.is_discarded() << '\n';
std::cout << j_object.is_discarded() << '\n';
std::cout << j_array.is_discarded() << '\n';
std::cout << j_string.is_discarded() << '\n';
}
|
negative_train_query0_00201
|
|
doc/examples/push_back.cpp/main
int main()
{
// create JSON values
json array = {1, 2, 3, 4, 5};
json null;
// print values
std::cout << array << '\n';
std::cout << null << '\n';
// add values
array.push_back(6);
array += 7;
null += "first";
null += "second";
// print values
std::cout << array << '\n';
std::cout << null << '\n';
}
|
negative_train_query0_00202
|
|
doc/examples/back.cpp/main
int main()
{
// create JSON values
json j_boolean = true;
json j_number_integer = 17;
json j_number_float = 23.42;
json j_object = {{"one", 1}, {"two", 2}};
json j_object_empty(json::value_t::object);
json j_array = {1, 2, 4, 8, 16};
json j_array_empty(json::value_t::array);
json j_string = "Hello, world";
// call back()
std::cout << j_boolean.back() << '\n';
std::cout << j_number_integer.back() << '\n';
std::cout << j_number_float.back() << '\n';
std::cout << j_object.back() << '\n';
//std::cout << j_object_empty.back() << '\n'; // undefined behavior
std::cout << j_array.back() << '\n';
//std::cout << j_array_empty.back() << '\n'; // undefined behavior
std::cout << j_string.back() << '\n';
// back() called on a null value
try
{
json j_null;
j_null.back();
}
catch (json::invalid_iterator& e)
{
std::cout << e.what() << '\n';
}
}
|
negative_train_query0_00203
|
|
doc/examples/count.cpp/main
int main()
{
// create a JSON object
json j_object = {{"one", 1}, {"two", 2}};
// call count()
auto count_two = j_object.count("two");
auto count_three = j_object.count("three");
// print values
std::cout << "number of elements with key \"two\": " << count_two << '\n';
std::cout << "number of elements with key \"three\": " << count_three << '\n';
}
|
negative_train_query0_00204
|
|
doc/examples/object.cpp/main
int main()
{
// create JSON objects
json j_no_init_list = json::object();
json j_empty_init_list = json::object({});
json j_list_of_pairs = json::object({ {"one", 1}, {"two", 2} });
// serialize the JSON objects
std::cout << j_no_init_list << '\n';
std::cout << j_empty_init_list << '\n';
std::cout << j_list_of_pairs << '\n';
// example for an exception
try
{
// can only create an object from a list of pairs
json j_invalid_object = json::object({{ "one", 1, 2 }});
}
catch (json::type_error& e)
{
std::cout << e.what() << '\n';
}
}
|
negative_train_query0_00205
|
|
doc/examples/is_number_integer.cpp/main
int main()
{
// create JSON values
json j_null;
json j_boolean = true;
json j_number_integer = 17;
json j_number_unsigned_integer = 12345678987654321u;
json j_number_float = 23.42;
json j_object = {{"one", 1}, {"two", 2}};
json j_array = {1, 2, 4, 8, 16};
json j_string = "Hello, world";
// call is_number_integer()
std::cout << std::boolalpha;
std::cout << j_null.is_number_integer() << '\n';
std::cout << j_boolean.is_number_integer() << '\n';
std::cout << j_number_integer.is_number_integer() << '\n';
std::cout << j_number_unsigned_integer.is_number_integer() << '\n';
std::cout << j_number_float.is_number_integer() << '\n';
std::cout << j_object.is_number_integer() << '\n';
std::cout << j_array.is_number_integer() << '\n';
std::cout << j_string.is_number_integer() << '\n';
}
|
negative_train_query0_00206
|
|
doc/examples/to_ubjson.cpp/print_byte
void print_byte(uint8_t byte)
{
if (32 < byte and byte < 128)
{
std::cout << (char)byte;
}
else
{
std::cout << (int)byte;
}
}
|
negative_train_query0_00207
|
|
doc/examples/to_ubjson.cpp/main
int main()
{
// create a JSON value
json j = R"({"compact": true, "schema": false})"_json;
// serialize it to UBJSON
std::vector<uint8_t> v = json::to_ubjson(j);
// print the vector content
for (auto& byte : v)
{
print_byte(byte);
}
std::cout << std::endl;
// create an array of numbers
json array = {1, 2, 3, 4, 5, 6, 7, 8};
// serialize it to UBJSON using default representation
std::vector<uint8_t> v_array = json::to_ubjson(array);
// serialize it to UBJSON using size optimization
std::vector<uint8_t> v_array_size = json::to_ubjson(array, true);
// serialize it to UBJSON using type optimization
std::vector<uint8_t> v_array_size_and_type = json::to_ubjson(array, true, true);
// print the vector contents
for (auto& byte : v_array)
{
print_byte(byte);
}
std::cout << std::endl;
for (auto& byte : v_array_size)
{
print_byte(byte);
}
std::cout << std::endl;
for (auto& byte : v_array_size_and_type)
{
print_byte(byte);
}
std::cout << std::endl;
}
|
negative_train_query0_00208
|
|
doc/examples/invalid_iterator.cpp/main
int main()
{
try
{
// calling iterator::key() on non-object iterator
json j = "string";
json::iterator it = j.begin();
auto k = it.key();
}
catch (json::invalid_iterator& e)
{
// output exception information
std::cout << "message: " << e.what() << '\n'
<< "exception id: " << e.id << std::endl;
}
}
|
negative_train_query0_00209
|
|
doc/examples/basic_json__nullptr_t.cpp/main
int main()
{
// implicitly create a JSON null value
json j1;
// explicitly create a JSON null value
json j2(nullptr);
// serialize the JSON null value
std::cout << j1 << '\n' << j2 << '\n';
}
|
negative_train_query0_00210
|
|
doc/examples/parse__array__parser_callback_t.cpp/main
int main()
{
// a JSON text
char text[] = R"(
{
"Image": {
"Width": 800,
"Height": 600,
"Title": "View from 15th Floor",
"Thumbnail": {
"Url": "http://www.example.com/image/481989943",
"Height": 125,
"Width": 100
},
"Animated" : false,
"IDs": [116, 943, 234, 38793]
}
}
)";
// parse and serialize JSON
json j_complete = json::parse(text);
std::cout << std::setw(4) << j_complete << "\n\n";
}
|
negative_train_query0_00211
|
|
doc/examples/operatorarray__key_type_const.cpp/main
int main()
{
// create a JSON object
const json object =
{
{"one", 1}, {"two", 2}, {"three", 2.9}
};
// output element with key "two"
std::cout << object["two"] << '\n';
}
|
negative_train_query0_00212
|
|
doc/examples/crend.cpp/main
int main()
{
// create an array value
json array = {1, 2, 3, 4, 5};
// get an iterator to the reverse-end
json::const_reverse_iterator it = array.crend();
// increment the iterator to point to the first element
--it;
// serialize the element that the iterator points to
std::cout << *it << '\n';
}
|
negative_train_query0_00213
|
|
doc/examples/operator__less.cpp/main
int main()
{
// create several JSON values
json array_1 = {1, 2, 3};
json array_2 = {1, 2, 4};
json object_1 = {{"A", "a"}, {"B", "b"}};
json object_2 = {{"B", "b"}, {"A", "a"}};
json number_1 = 17;
json number_2 = 17.0000000000001L;
json string_1 = "foo";
json string_2 = "bar";
// output values and comparisons
std::cout << std::boolalpha;
std::cout << array_1 << " == " << array_2 << " " << (array_1 < array_2) << '\n';
std::cout << object_1 << " == " << object_2 << " " << (object_1 < object_2) << '\n';
std::cout << number_1 << " == " << number_2 << " " << (number_1 < number_2) << '\n';
std::cout << string_1 << " == " << string_2 << " " << (string_1 < string_2) << '\n';
}
|
negative_train_query0_00214
|
|
doc/examples/operator_deserialize.cpp/main
int main()
{
// create stream with serialized JSON
std::stringstream ss;
ss << R"({
"number": 23,
"string": "Hello, world!",
"array": [1, 2, 3, 4, 5],
"boolean": false,
"null": null
})";
// create JSON value and read the serialization from the stream
json j;
ss >> j;
// serialize JSON
std::cout << std::setw(2) << j << '\n';
}
|
negative_train_query0_00215
|
|
doc/examples/README.cpp/main
int main()
{
// create a JSON object
json j =
{
{"pi", 3.141},
{"happy", true},
{"name", "Niels"},
{"nothing", nullptr},
{
"answer", {
{"everything", 42}
}
},
{"list", {1, 0, 2}},
{
"object", {
{"currency", "USD"},
{"value", 42.99}
}
}
};
// add new values
j["new"]["key"]["value"] = {"another", "list"};
// count elements
auto s = j.size();
j["size"] = s;
// pretty print with indent of 4 spaces
std::cout << std::setw(4) << j << '\n';
}
|
negative_train_query0_00216
|
|
doc/examples/is_primitive.cpp/main
int main()
{
// create JSON values
json j_null;
json j_boolean = true;
json j_number_integer = 17;
json j_number_float = 23.42;
json j_number_unsigned_integer = 12345678987654321u;
json j_object = {{"one", 1}, {"two", 2}};
json j_array = {1, 2, 4, 8, 16};
json j_string = "Hello, world";
// call is_primitive()
std::cout << std::boolalpha;
std::cout << j_null.is_primitive() << '\n';
std::cout << j_boolean.is_primitive() << '\n';
std::cout << j_number_integer.is_primitive() << '\n';
std::cout << j_number_unsigned_integer.is_primitive() << '\n';
std::cout << j_number_float.is_primitive() << '\n';
std::cout << j_object.is_primitive() << '\n';
std::cout << j_array.is_primitive() << '\n';
std::cout << j_string.is_primitive() << '\n';
}
|
negative_train_query0_00217
|
|
doc/examples/operator__notequal.cpp/main
int main()
{
// create several JSON values
json array_1 = {1, 2, 3};
json array_2 = {1, 2, 4};
json object_1 = {{"A", "a"}, {"B", "b"}};
json object_2 = {{"B", "b"}, {"A", "a"}};
json number_1 = 17;
json number_2 = 17.000000000000001L;
json string_1 = "foo";
json string_2 = "bar";
// output values and comparisons
std::cout << std::boolalpha;
std::cout << array_1 << " != " << array_2 << " " << (array_1 != array_2) << '\n';
std::cout << object_1 << " != " << object_2 << " " << (object_1 != object_2) << '\n';
std::cout << number_1 << " != " << number_2 << " " << (number_1 != number_2) << '\n';
std::cout << string_1 << " != " << string_2 << " " << (string_1 != string_2) << '\n';
}
|
negative_train_query0_00218
|
|
doc/examples/from_cbor.cpp/main
int main()
{
// create byte vector
std::vector<uint8_t> v = {0xa2, 0x67, 0x63, 0x6f, 0x6d, 0x70, 0x61, 0x63,
0x74, 0xf5, 0x66, 0x73, 0x63, 0x68, 0x65, 0x6d,
0x61, 0x00
};
// deserialize it with CBOR
json j = json::from_cbor(v);
// print the deserialized JSON value
std::cout << std::setw(2) << j << std::endl;
}
|
negative_train_query0_00219
|
|
doc/examples/is_string.cpp/main
int main()
{
// create JSON values
json j_null;
json j_boolean = true;
json j_number_integer = 17;
json j_number_float = 23.42;
json j_number_unsigned_integer = 12345678987654321u;
json j_object = {{"one", 1}, {"two", 2}};
json j_array = {1, 2, 4, 8, 16};
json j_string = "Hello, world";
// call is_string()
std::cout << std::boolalpha;
std::cout << j_null.is_string() << '\n';
std::cout << j_boolean.is_string() << '\n';
std::cout << j_number_integer.is_string() << '\n';
std::cout << j_number_unsigned_integer.is_string() << '\n';
std::cout << j_number_float.is_string() << '\n';
std::cout << j_object.is_string() << '\n';
std::cout << j_array.is_string() << '\n';
std::cout << j_string.is_string() << '\n';
}
|
negative_train_query0_00220
|
|
doc/examples/from_ubjson.cpp/main
int main()
{
// create byte vector
std::vector<uint8_t> v = {0x7B, 0x69, 0x07, 0x63, 0x6F, 0x6D, 0x70, 0x61,
0x63, 0x74, 0x54, 0x69, 0x06, 0x73, 0x63, 0x68,
0x65, 0x6D, 0x61, 0x69, 0x00, 0x7D
};
// deserialize it with UBJSON
json j = json::from_ubjson(v);
// print the deserialized JSON value
std::cout << std::setw(2) << j << std::endl;
}
|
negative_train_query0_00221
|
|
doc/examples/swap__string_t.cpp/main
int main()
{
// create a JSON value
json value = { "the good", "the bad", "the ugly" };
// create string_t
json::string_t string = "the fast";
// swap the object stored in the JSON value
value[1].swap(string);
// output the values
std::cout << "value = " << value << '\n';
std::cout << "string = " << string << '\n';
}
|
negative_train_query0_00222
|
|
doc/examples/type.cpp/main
int main()
{
// create JSON values
json j_null;
json j_boolean = true;
json j_number_integer = -17;
json j_number_unsigned = 42u;
json j_number_float = 23.42;
json j_object = {{"one", 1}, {"two", 2}};
json j_array = {1, 2, 4, 8, 16};
json j_string = "Hello, world";
// call type()
std::cout << std::boolalpha;
std::cout << (j_null.type() == json::value_t::null) << '\n';
std::cout << (j_boolean.type() == json::value_t::boolean) << '\n';
std::cout << (j_number_integer.type() == json::value_t::number_integer) << '\n';
std::cout << (j_number_unsigned.type() == json::value_t::number_unsigned) << '\n';
std::cout << (j_number_float.type() == json::value_t::number_float) << '\n';
std::cout << (j_object.type() == json::value_t::object) << '\n';
std::cout << (j_array.type() == json::value_t::array) << '\n';
std::cout << (j_string.type() == json::value_t::string) << '\n';
}
|
negative_train_query0_00223
|
|
doc/examples/json_pointer__back.cpp/main
int main()
{
// different JSON Pointers
json::json_pointer ptr1("/foo");
json::json_pointer ptr2("/foo/0");
// call empty()
std::cout << "last reference token of " << ptr1 << " is " << ptr1.back() << '\n'
<< "last reference token of " << ptr2 << " is " << ptr2.back() << std::endl;
}
|
negative_train_query0_00224
|
|
doc/examples/operatorjson_pointer.cpp/main
int main()
{
// create a JSON value
json j =
{
{"number", 1}, {"string", "foo"}, {"array", {1, 2}}
};
// read-only access
// output element with JSON pointer "/number"
std::cout << j["/number"_json_pointer] << '\n';
// output element with JSON pointer "/string"
std::cout << j["/string"_json_pointer] << '\n';
// output element with JSON pointer "/array"
std::cout << j["/array"_json_pointer] << '\n';
// output element with JSON pointer "/array/1"
std::cout << j["/array/1"_json_pointer] << '\n';
// writing access
// change the string
j["/string"_json_pointer] = "bar";
// output the changed string
std::cout << j["string"] << '\n';
// "change" a nonexisting object entry
j["/boolean"_json_pointer] = true;
// output the changed object
std::cout << j << '\n';
// change an array element
j["/array/1"_json_pointer] = 21;
// "change" an array element with nonexisting index
j["/array/4"_json_pointer] = 44;
// output the changed array
std::cout << j["array"] << '\n';
// "change" the array element past the end
j["/array/-"_json_pointer] = 55;
// output the changed array
std::cout << j["array"] << '\n';
}
|
negative_train_query0_00225
|
|
doc/examples/update__range.cpp/main
int main()
{
// create two JSON objects
json o1 = R"( {"color": "red", "price": 17.99} )"_json;
json o2 = R"( {"color": "blue", "speed": 100} )"_json;
// add all keys from o2 to o1 (updating "color")
o1.update(o2.begin(), o2.end());
// output updated object o1
std::cout << std::setw(2) << o1 << '\n';
}
|
negative_train_query0_00226
|
|
doc/examples/is_number_unsigned.cpp/main
int main()
{
// create JSON values
json j_null;
json j_boolean = true;
json j_number_integer = 17;
json j_number_unsigned_integer = 12345678987654321u;
json j_number_float = 23.42;
json j_object = {{"one", 1}, {"two", 2}};
json j_array = {1, 2, 4, 8, 16};
json j_string = "Hello, world";
// call is_number_unsigned()
std::cout << std::boolalpha;
std::cout << j_null.is_number_unsigned() << '\n';
std::cout << j_boolean.is_number_unsigned() << '\n';
std::cout << j_number_integer.is_number_unsigned() << '\n';
std::cout << j_number_unsigned_integer.is_number_unsigned() << '\n';
std::cout << j_number_float.is_number_unsigned() << '\n';
std::cout << j_object.is_number_unsigned() << '\n';
std::cout << j_array.is_number_unsigned() << '\n';
std::cout << j_string.is_number_unsigned() << '\n';
}
|
negative_train_query0_00227
|
|
doc/examples/at_json_pointer.cpp/main
int main()
{
// create a JSON value
json j =
{
{"number", 1}, {"string", "foo"}, {"array", {1, 2}}
};
// read-only access
// output element with JSON pointer "/number"
std::cout << j.at("/number"_json_pointer) << '\n';
// output element with JSON pointer "/string"
std::cout << j.at("/string"_json_pointer) << '\n';
// output element with JSON pointer "/array"
std::cout << j.at("/array"_json_pointer) << '\n';
// output element with JSON pointer "/array/1"
std::cout << j.at("/array/1"_json_pointer) << '\n';
// writing access
// change the string
j.at("/string"_json_pointer) = "bar";
// output the changed string
std::cout << j["string"] << '\n';
// change an array element
j.at("/array/1"_json_pointer) = 21;
// output the changed array
std::cout << j["array"] << '\n';
// out_of_range.106
try
{
// try to use an array index with leading '0'
json::reference ref = j.at("/array/01"_json_pointer);
}
catch (json::parse_error& e)
{
std::cout << e.what() << '\n';
}
// out_of_range.109
try
{
// try to use an array index that is not a number
json::reference ref = j.at("/array/one"_json_pointer);
}
catch (json::parse_error& e)
{
std::cout << e.what() << '\n';
}
// out_of_range.401
try
{
// try to use a an invalid array index
json::reference ref = j.at("/array/4"_json_pointer);
}
catch (json::out_of_range& e)
{
std::cout << e.what() << '\n';
}
// out_of_range.402
try
{
// try to use the array index '-'
json::reference ref = j.at("/array/-"_json_pointer);
}
catch (json::out_of_range& e)
{
std::cout << e.what() << '\n';
}
// out_of_range.403
try
{
// try to use a JSON pointer to an nonexistent object key
json::const_reference ref = j.at("/foo"_json_pointer);
}
catch (json::out_of_range& e)
{
std::cout << e.what() << '\n';
}
// out_of_range.404
try
{
// try to use a JSON pointer that cannot be resolved
json::reference ref = j.at("/number/foo"_json_pointer);
}
catch (json::out_of_range& e)
{
std::cout << e.what() << '\n';
}
}
|
negative_train_query0_00228
|
|
doc/examples/emplace_back.cpp/main
int main()
{
// create JSON values
json array = {1, 2, 3, 4, 5};
json null;
// print values
std::cout << array << '\n';
std::cout << null << '\n';
// add values
array.emplace_back(6);
null.emplace_back("first");
null.emplace_back(3, "second");
// print values
std::cout << array << '\n';
std::cout << null << '\n';
}
|
negative_train_query0_00229
|
|
doc/examples/basic_json__value_ptr.cpp/main
int main()
{
// create a JSON object with different entry types
json j =
{
{"integer", 1},
{"floating", 42.23},
{"string", "hello world"},
{"boolean", true},
{"object", {{"key1", 1}, {"key2", 2}}},
{"array", {1, 2, 3}}
};
// access existing values
int v_integer = j.value("/integer"_json_pointer, 0);
double v_floating = j.value("/floating"_json_pointer, 47.11);
// access nonexisting values and rely on default value
std::string v_string = j.value("/nonexisting"_json_pointer, "oops");
bool v_boolean = j.value("/nonexisting"_json_pointer, false);
// output values
std::cout << std::boolalpha << v_integer << " " << v_floating
<< " " << v_string << " " << v_boolean << "\n";
}
|
negative_train_query0_00230
|
|
doc/examples/basic_json__CompatibleType.cpp/main
int main()
{
// ============
// object types
// ============
// create an object from an object_t value
json::object_t object_value = { {"one", 1}, {"two", 2} };
json j_object_t(object_value);
// create an object from std::map
std::map<std::string, int> c_map
{
{"one", 1}, {"two", 2}, {"three", 3}
};
json j_map(c_map);
// create an object from std::unordered_map
std::unordered_map<const char*, double> c_umap
{
{"one", 1.2}, {"two", 2.3}, {"three", 3.4}
};
json j_umap(c_umap);
// create an object from std::multimap
std::multimap<std::string, bool> c_mmap
{
{"one", true}, {"two", true}, {"three", false}, {"three", true}
};
json j_mmap(c_mmap); // only one entry for key "three" is used
// create an object from std::unordered_multimap
std::unordered_multimap<std::string, bool> c_ummap
{
{"one", true}, {"two", true}, {"three", false}, {"three", true}
};
json j_ummap(c_ummap); // only one entry for key "three" is used
// serialize the JSON objects
std::cout << j_object_t << '\n';
std::cout << j_map << '\n';
std::cout << j_umap << '\n';
std::cout << j_mmap << '\n';
std::cout << j_ummap << "\n\n";
// ===========
// array types
// ===========
// create an array from an array_t value
json::array_t array_value = {"one", "two", 3, 4.5, false};
json j_array_t(array_value);
// create an array from std::vector
std::vector<int> c_vector {1, 2, 3, 4};
json j_vec(c_vector);
// create an array from std::valarray
std::valarray<short> c_valarray {10, 9, 8, 7};
json j_valarray(c_valarray);
// create an array from std::deque
std::deque<double> c_deque {1.2, 2.3, 3.4, 5.6};
json j_deque(c_deque);
// create an array from std::list
std::list<bool> c_list {true, true, false, true};
json j_list(c_list);
// create an array from std::forward_list
std::forward_list<int64_t> c_flist {12345678909876, 23456789098765, 34567890987654, 45678909876543};
json j_flist(c_flist);
// create an array from std::array
std::array<unsigned long, 4> c_array {{1, 2, 3, 4}};
json j_array(c_array);
// create an array from std::set
std::set<std::string> c_set {"one", "two", "three", "four", "one"};
json j_set(c_set); // only one entry for "one" is used
// create an array from std::unordered_set
std::unordered_set<std::string> c_uset {"one", "two", "three", "four", "one"};
json j_uset(c_uset); // only one entry for "one" is used
// create an array from std::multiset
std::multiset<std::string> c_mset {"one", "two", "one", "four"};
json j_mset(c_mset); // both entries for "one" are used
// create an array from std::unordered_multiset
std::unordered_multiset<std::string> c_umset {"one", "two", "one", "four"};
json j_umset(c_umset); // both entries for "one" are used
// serialize the JSON arrays
std::cout << j_array_t << '\n';
std::cout << j_vec << '\n';
std::cout << j_valarray << '\n';
std::cout << j_deque << '\n';
std::cout << j_list << '\n';
std::cout << j_flist << '\n';
std::cout << j_array << '\n';
std::cout << j_set << '\n';
std::cout << j_uset << '\n';
std::cout << j_mset << '\n';
std::cout << j_umset << "\n\n";
// ============
// string types
// ============
// create string from a string_t value
json::string_t string_value = "The quick brown fox jumps over the lazy dog.";
json j_string_t(string_value);
// create a JSON string directly from a string literal
json j_string_literal("The quick brown fox jumps over the lazy dog.");
// create string from std::string
std::string s_stdstring = "The quick brown fox jumps over the lazy dog.";
json j_stdstring(s_stdstring);
// serialize the JSON strings
std::cout << j_string_t << '\n';
std::cout << j_string_literal << '\n';
std::cout << j_stdstring << "\n\n";
// ============
// number types
// ============
// create a JSON number from number_integer_t
json::number_integer_t value_integer_t = -42;
json j_integer_t(value_integer_t);
// create a JSON number from number_unsigned_t
json::number_integer_t value_unsigned_t = 17;
json j_unsigned_t(value_unsigned_t);
// create a JSON number from an anonymous enum
enum { enum_value = 17 };
json j_enum(enum_value);
// create values of different integer types
short n_short = 42;
int n_int = -23;
long n_long = 1024;
int_least32_t n_int_least32_t = -17;
uint8_t n_uint8_t = 8;
// create (integer) JSON numbers
json j_short(n_short);
json j_int(n_int);
json j_long(n_long);
json j_int_least32_t(n_int_least32_t);
json j_uint8_t(n_uint8_t);
// create values of different floating-point types
json::number_float_t v_ok = 3.141592653589793;
json::number_float_t v_nan = NAN;
json::number_float_t v_infinity = INFINITY;
// create values of different floating-point types
float n_float = 42.23;
float n_float_nan = 1.0f / 0.0f;
double n_double = 23.42;
// create (floating point) JSON numbers
json j_ok(v_ok);
json j_nan(v_nan);
json j_infinity(v_infinity);
json j_float(n_float);
json j_float_nan(n_float_nan);
json j_double(n_double);
// serialize the JSON numbers
std::cout << j_integer_t << '\n';
std::cout << j_unsigned_t << '\n';
std::cout << j_enum << '\n';
std::cout << j_short << '\n';
std::cout << j_int << '\n';
std::cout << j_long << '\n';
std::cout << j_int_least32_t << '\n';
std::cout << j_uint8_t << '\n';
std::cout << j_ok << '\n';
std::cout << j_nan << '\n';
std::cout << j_infinity << '\n';
std::cout << j_float << '\n';
std::cout << j_float_nan << '\n';
std::cout << j_double << "\n\n";
// =============
// boolean types
// =============
// create boolean values
json j_truth = true;
json j_falsity = false;
// serialize the JSON booleans
std::cout << j_truth << '\n';
std::cout << j_falsity << '\n';
}
|
negative_train_query0_00231
|
|
doc/examples/swap__reference.cpp/main
int main()
{
// create two JSON values
json j1 = {1, 2, 3, 4, 5};
json j2 = {{"pi", 3.141592653589793}, {"e", 2.718281828459045}};
// swap the values
j1.swap(j2);
// output the values
std::cout << "j1 = " << j1 << '\n';
std::cout << "j2 = " << j2 << '\n';
}
|
negative_train_query0_00232
|
|
doc/examples/from_msgpack.cpp/main
int main()
{
// create byte vector
std::vector<uint8_t> v = {0x82, 0xa7, 0x63, 0x6f, 0x6d, 0x70, 0x61, 0x63,
0x74, 0xc3, 0xa6, 0x73, 0x63, 0x68, 0x65, 0x6d,
0x61, 0x00
};
// deserialize it with MessagePack
json j = json::from_msgpack(v);
// print the deserialized JSON value
std::cout << std::setw(2) << j << std::endl;
}
|
negative_train_query0_00233
|
|
doc/examples/cbegin.cpp/main
int main()
{
// create an array value
const json array = {1, 2, 3, 4, 5};
// get an iterator to the first element
json::const_iterator it = array.cbegin();
// serialize the element that the iterator points to
std::cout << *it << '\n';
}
|
negative_train_query0_00234
|
|
doc/examples/basic_json__copyassignment.cpp/main
int main()
{
// create JSON values
json a = 23;
json b = 42;
// copy-assign a to b
b = a;
// serialize the JSON arrays
std::cout << a << '\n';
std::cout << b << '\n';
}
|
negative_train_query0_00235
|
|
doc/examples/from_bson.cpp/main
int main()
{
// create byte vector
std::vector<uint8_t> v = {0x1b, 0x00, 0x00, 0x00, 0x08, 0x63, 0x6f, 0x6d,
0x70, 0x61, 0x63, 0x74, 0x00, 0x01, 0x10, 0x73,
0x63, 0x68, 0x65, 0x6d, 0x61, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00
};
// deserialize it with BSON
json j = json::from_bson(v);
// print the deserialized JSON value
std::cout << std::setw(2) << j << std::endl;
}
|
negative_train_query0_00236
|
|
doc/examples/at__object_t_key_type_const.cpp/main
int main()
{
// create JSON object
const json object =
{
{"the good", "il buono"},
{"the bad", "il cattivo"},
{"the ugly", "il brutto"}
};
// output element with key "the ugly"
std::cout << object.at("the ugly") << '\n';
// exception type_error.304
try
{
// use at() on a non-object type
const json str = "I am a string";
std::cout << str.at("the good") << '\n';
}
catch (json::type_error& e)
{
std::cout << e.what() << '\n';
}
// exception out_of_range.401
try
{
// try to read from a nonexisting key
std::cout << object.at("the fast") << '\n';
}
catch (json::out_of_range)
{
std::cout << "out of range" << '\n';
}
}
|
negative_train_query0_00237
|
|
doc/examples/operator__ValueType.cpp/main
int main()
{
// create a JSON value with different types
json json_types =
{
{"boolean", true},
{
"number", {
{"integer", 42},
{"floating-point", 17.23}
}
},
{"string", "Hello, world!"},
{"array", {1, 2, 3, 4, 5}},
{"null", nullptr}
};
// use implicit conversions
bool v1 = json_types["boolean"];
int v2 = json_types["number"]["integer"];
short v3 = json_types["number"]["integer"];
float v4 = json_types["number"]["floating-point"];
int v5 = json_types["number"]["floating-point"];
std::string v6 = json_types["string"];
std::vector<short> v7 = json_types["array"];
std::unordered_map<std::string, json> v8 = json_types;
// print the conversion results
std::cout << v1 << '\n';
std::cout << v2 << ' ' << v3 << '\n';
std::cout << v4 << ' ' << v5 << '\n';
std::cout << v6 << '\n';
for (auto i : v7)
{
std::cout << i << ' ';
}
std::cout << "\n\n";
for (auto i : v8)
{
std::cout << i.first << ": " << i.second << '\n';
}
// example for an exception
try
{
bool v1 = json_types["string"];
}
catch (json::type_error& e)
{
std::cout << e.what() << '\n';
}
}
|
negative_train_query0_00238
|
|
doc/examples/json_pointer__to_string.cpp/main
int main()
{
// different JSON Pointers
json::json_pointer ptr1("");
json::json_pointer ptr2("/foo");
json::json_pointer ptr3("/foo/0");
json::json_pointer ptr4("/");
json::json_pointer ptr5("/a~1b");
json::json_pointer ptr6("/c%d");
json::json_pointer ptr7("/e^f");
json::json_pointer ptr8("/g|h");
json::json_pointer ptr9("/i\\j");
json::json_pointer ptr10("/k\"l");
json::json_pointer ptr11("/ ");
json::json_pointer ptr12("/m~0n");
std::cout << ptr1.to_string() << '\n'
<< ptr2.to_string() << '\n'
<< ptr3.to_string() << '\n'
<< ptr4.to_string() << '\n'
<< ptr5.to_string() << '\n'
<< ptr6.to_string() << '\n'
<< ptr7.to_string() << '\n'
<< ptr8.to_string() << '\n'
<< ptr9.to_string() << '\n'
<< ptr10.to_string() << '\n'
<< ptr11.to_string() << '\n'
<< ptr12.to_string() << std::endl;
}
|
negative_train_query0_00239
|
|
doc/examples/at__size_type_const.cpp/main
int main()
{
// create JSON array
const json array = {"first", "2nd", "third", "fourth"};
// output element at index 2 (third element)
std::cout << array.at(2) << '\n';
// exception type_error.304
try
{
// use at() on a non-array type
const json str = "I am a string";
std::cout << str.at(0) << '\n';
}
catch (json::type_error& e)
{
std::cout << e.what() << '\n';
}
// exception out_of_range.401
try
{
// try to read beyond the array limit
std::cout << array.at(5) << '\n';
}
catch (json::out_of_range& e)
{
std::cout << e.what() << '\n';
}
}
|
negative_train_query0_00240
|
|
doc/examples/get_ptr.cpp/main
int main()
{
// create a JSON number
json value = 17;
// explicitly getting pointers
auto p1 = value.get_ptr<const json::number_integer_t*>();
auto p2 = value.get_ptr<json::number_integer_t*>();
auto p3 = value.get_ptr<json::number_integer_t* const>();
auto p4 = value.get_ptr<const json::number_integer_t* const>();
auto p5 = value.get_ptr<json::number_float_t*>();
// print the pointees
std::cout << *p1 << ' ' << *p2 << ' ' << *p3 << ' ' << *p4 << '\n';
std::cout << std::boolalpha << (p5 == nullptr) << '\n';
}
|
negative_train_query0_00241
|
|
doc/examples/is_null.cpp/main
int main()
{
// create JSON values
json j_null;
json j_boolean = true;
json j_number_integer = 17;
json j_number_unsigned_integer = 12345678987654321u;
json j_number_float = 23.42;
json j_object = {{"one", 1}, {"two", 2}};
json j_array = {1, 2, 4, 8, 16};
json j_string = "Hello, world";
// call is_null()
std::cout << std::boolalpha;
std::cout << j_null.is_null() << '\n';
std::cout << j_boolean.is_null() << '\n';
std::cout << j_number_integer.is_null() << '\n';
std::cout << j_number_unsigned_integer.is_null() << '\n';
std::cout << j_number_float.is_null() << '\n';
std::cout << j_object.is_null() << '\n';
std::cout << j_array.is_null() << '\n';
std::cout << j_string.is_null() << '\n';
}
|
negative_train_query0_00242
|
|
doc/examples/cend.cpp/main
int main()
{
// create an array value
json array = {1, 2, 3, 4, 5};
// get an iterator to one past the last element
json::const_iterator it = array.cend();
// decrement the iterator to point to the last element
--it;
// serialize the element that the iterator points to
std::cout << *it << '\n';
}
|
negative_train_query0_00243
|
|
doc/examples/basic_json__basic_json.cpp/main
int main()
{
// create a JSON array
json j1 = {"one", "two", 3, 4.5, false};
// create a copy
json j2(j1);
// serialize the JSON array
std::cout << j1 << " = " << j2 << '\n';
std::cout << std::boolalpha << (j1 == j2) << '\n';
}
|
negative_train_query0_00244
|
|
doc/examples/is_structured.cpp/main
int main()
{
// create JSON values
json j_null;
json j_boolean = true;
json j_number_integer = 17;
json j_number_float = 23.42;
json j_number_unsigned_integer = 12345678987654321u;
json j_object = {{"one", 1}, {"two", 2}};
json j_array = {1, 2, 4, 8, 16};
json j_string = "Hello, world";
// call is_structured()
std::cout << std::boolalpha;
std::cout << j_null.is_structured() << '\n';
std::cout << j_boolean.is_structured() << '\n';
std::cout << j_number_integer.is_structured() << '\n';
std::cout << j_number_unsigned_integer.is_structured() << '\n';
std::cout << j_number_float.is_structured() << '\n';
std::cout << j_object.is_structured() << '\n';
std::cout << j_array.is_structured() << '\n';
std::cout << j_string.is_structured() << '\n';
}
|
negative_train_query0_00245
|
|
doc/examples/array.cpp/main
int main()
{
// create JSON arrays
json j_no_init_list = json::array();
json j_empty_init_list = json::array({});
json j_nonempty_init_list = json::array({1, 2, 3, 4});
json j_list_of_pairs = json::array({ {"one", 1}, {"two", 2} });
// serialize the JSON arrays
std::cout << j_no_init_list << '\n';
std::cout << j_empty_init_list << '\n';
std::cout << j_nonempty_init_list << '\n';
std::cout << j_list_of_pairs << '\n';
}
|
negative_train_query0_00246
|
|
doc/examples/at__size_type.cpp/main
int main()
{
// create JSON array
json array = {"first", "2nd", "third", "fourth"};
// output element at index 2 (third element)
std::cout << array.at(2) << '\n';
// change element at index 1 (second element) to "second"
array.at(1) = "second";
// output changed array
std::cout << array << '\n';
// exception type_error.304
try
{
// use at() on a non-array type
json str = "I am a string";
str.at(0) = "Another string";
}
catch (json::type_error& e)
{
std::cout << e.what() << '\n';
}
// exception out_of_range.401
try
{
// try to write beyond the array limit
array.at(5) = "sixth";
}
catch (json::out_of_range& e)
{
std::cout << e.what() << '\n';
}
}
|
negative_train_query0_00247
|
|
doc/examples/erase__IteratorType_IteratorType.cpp/main
int main()
{
// create JSON values
json j_boolean = true;
json j_number_integer = 17;
json j_number_float = 23.42;
json j_object = {{"one", 1}, {"two", 2}};
json j_array = {1, 2, 4, 8, 16};
json j_string = "Hello, world";
// call erase()
j_boolean.erase(j_boolean.begin(), j_boolean.end());
j_number_integer.erase(j_number_integer.begin(), j_number_integer.end());
j_number_float.erase(j_number_float.begin(), j_number_float.end());
j_object.erase(j_object.find("two"), j_object.end());
j_array.erase(j_array.begin() + 1, j_array.begin() + 3);
j_string.erase(j_string.begin(), j_string.end());
// print values
std::cout << j_boolean << '\n';
std::cout << j_number_integer << '\n';
std::cout << j_number_float << '\n';
std::cout << j_object << '\n';
std::cout << j_array << '\n';
std::cout << j_string << '\n';
}
|
negative_train_query0_00248
|
|
doc/examples/is_number_float.cpp/main
int main()
{
// create JSON values
json j_null;
json j_boolean = true;
json j_number_integer = 17;
json j_number_unsigned_integer = 12345678987654321u;
json j_number_float = 23.42;
json j_object = {{"one", 1}, {"two", 2}};
json j_array = {1, 2, 4, 8, 16};
json j_string = "Hello, world";
// call is_number_float()
std::cout << std::boolalpha;
std::cout << j_null.is_number_float() << '\n';
std::cout << j_boolean.is_number_float() << '\n';
std::cout << j_number_integer.is_number_float() << '\n';
std::cout << j_number_unsigned_integer.is_number_float() << '\n';
std::cout << j_number_float.is_number_float() << '\n';
std::cout << j_object.is_number_float() << '\n';
std::cout << j_array.is_number_float() << '\n';
std::cout << j_string.is_number_float() << '\n';
}
|
negative_train_query0_00249
|
|
doc/examples/operator__value_t.cpp/main
int main()
{
// create JSON values
json j_null;
json j_boolean = true;
json j_number_integer = -17;
json j_number_unsigned = 42u;
json j_number_float = 23.42;
json j_object = {{"one", 1}, {"two", 2}};
json j_array = {1, 2, 4, 8, 16};
json j_string = "Hello, world";
// call operator value_t()
json::value_t t_null = j_null;
json::value_t t_boolean = j_boolean;
json::value_t t_number_integer = j_number_integer;
json::value_t t_number_unsigned = j_number_unsigned;
json::value_t t_number_float = j_number_float;
json::value_t t_object = j_object;
json::value_t t_array = j_array;
json::value_t t_string = j_string;
// print types
std::cout << std::boolalpha;
std::cout << (t_null == json::value_t::null) << '\n';
std::cout << (t_boolean == json::value_t::boolean) << '\n';
std::cout << (t_number_integer == json::value_t::number_integer) << '\n';
std::cout << (t_number_unsigned == json::value_t::number_unsigned) << '\n';
std::cout << (t_number_float == json::value_t::number_float) << '\n';
std::cout << (t_object == json::value_t::object) << '\n';
std::cout << (t_array == json::value_t::array) << '\n';
std::cout << (t_string == json::value_t::string) << '\n';
}
|
negative_train_query0_00250
|
|
doc/examples/out_of_range.cpp/main
int main()
{
try
{
// calling at() for an invalid index
json j = {1, 2, 3, 4};
j.at(4) = 10;
}
catch (json::out_of_range& e)
{
// output exception information
std::cout << "message: " << e.what() << '\n'
<< "exception id: " << e.id << std::endl;
}
}
|
negative_train_query0_00251
|
|
doc/examples/crbegin.cpp/main
int main()
{
// create an array value
json array = {1, 2, 3, 4, 5};
// get an iterator to the reverse-beginning
json::const_reverse_iterator it = array.crbegin();
// serialize the element that the iterator points to
std::cout << *it << '\n';
}
|
negative_train_query0_00252
|
|
doc/examples/json_pointer__parent_pointer.cpp/main
int main()
{
// different JSON Pointers
json::json_pointer ptr1("");
json::json_pointer ptr2("/foo");
json::json_pointer ptr3("/foo/0");
// call parent_pointer()
std::cout << std::boolalpha
<< "parent of " << ptr1 << " is " << ptr1.parent_pointer() << '\n'
<< "parent of " << ptr2 << " is " << ptr2.parent_pointer() << '\n'
<< "parent of " << ptr3 << " is " << ptr3.parent_pointer() << std::endl;
}
|
negative_train_query0_00253
|
|
doc/examples/push_back__initializer_list.cpp/main
int main()
{
// create JSON values
json object = {{"one", 1}, {"two", 2}};
json null;
// print values
std::cout << object << '\n';
std::cout << null << '\n';
// add values:
object.push_back({"three", 3}); // object is extended
object += {"four", 4}; // object is extended
null.push_back({"five", 5}); // null is converted to array
// print values
std::cout << object << '\n';
std::cout << null << '\n';
// would throw:
//object.push_back({1, 2, 3});
}
|
negative_train_query0_00254
|
|
doc/examples/json_pointer.cpp/main
int main()
{
// correct JSON pointers
json::json_pointer p1;
json::json_pointer p2("");
json::json_pointer p3("/");
json::json_pointer p4("//");
json::json_pointer p5("/foo/bar");
json::json_pointer p6("/foo/bar/-");
json::json_pointer p7("/foo/~0");
json::json_pointer p8("/foo/~1");
// error: JSON pointer does not begin with a slash
try
{
json::json_pointer p9("foo");
}
catch (json::parse_error& e)
{
std::cout << e.what() << '\n';
}
// error: JSON pointer uses escape symbol ~ not followed by 0 or 1
try
{
json::json_pointer p10("/foo/~");
}
catch (json::parse_error& e)
{
std::cout << e.what() << '\n';
}
// error: JSON pointer uses escape symbol ~ not followed by 0 or 1
try
{
json::json_pointer p11("/foo/~3");
}
catch (json::parse_error& e)
{
std::cout << e.what() << '\n';
}
}
|
negative_train_query0_00255
|
|
doc/examples/find__key_type.cpp/main
int main()
{
// create a JSON object
json j_object = {{"one", 1}, {"two", 2}};
// call find
auto it_two = j_object.find("two");
auto it_three = j_object.find("three");
// print values
std::cout << std::boolalpha;
std::cout << "\"two\" was found: " << (it_two != j_object.end()) << '\n';
std::cout << "value at key \"two\": " << *it_two << '\n';
std::cout << "\"three\" was found: " << (it_three != j_object.end()) << '\n';
}
|
negative_train_query0_00256
|
|
single_include/nlohmann/json.hpp/get_arithmetic_value
void get_arithmetic_value(const BasicJsonType& j, ArithmeticType& val)
{
switch (static_cast<value_t>(j))
{
case value_t::number_unsigned:
{
val = static_cast<ArithmeticType>(*j.template get_ptr<const typename BasicJsonType::number_unsigned_t*>());
break;
}
case value_t::number_integer:
{
val = static_cast<ArithmeticType>(*j.template get_ptr<const typename BasicJsonType::number_integer_t*>());
break;
}
case value_t::number_float:
{
val = static_cast<ArithmeticType>(*j.template get_ptr<const typename BasicJsonType::number_float_t*>());
break;
}
default:
JSON_THROW(type_error::create(302, "type must be number, but is " + std::string(j.type_name())));
}
}
|
negative_train_query0_00257
|
|
single_include/nlohmann/json.hpp/from_json
void from_json(const BasicJsonType& j, ConstructibleObjectType& obj)
{
if (JSON_HEDLEY_UNLIKELY(not j.is_object()))
{
JSON_THROW(type_error::create(302, "type must be object, but is " + std::string(j.type_name())));
}
ConstructibleObjectType ret;
auto inner_object = j.template get_ptr<const typename BasicJsonType::object_t*>();
using value_type = typename ConstructibleObjectType::value_type;
std::transform(
inner_object->begin(), inner_object->end(),
std::inserter(ret, ret.begin()),
[](typename BasicJsonType::object_t::value_type const & p)
{
return value_type(p.first, p.second.template get<typename ConstructibleObjectType::mapped_type>());
});
obj = std::move(ret);
}
|
negative_train_query0_00258
|
|
single_include/nlohmann/json.hpp/split
static std::vector<std::string> split(const std::string& reference_string)
{
std::vector<std::string> result;
// special case: empty reference string -> no reference tokens
if (reference_string.empty())
{
return result;
}
// check if nonempty reference string begins with slash
if (JSON_HEDLEY_UNLIKELY(reference_string[0] != '/'))
{
JSON_THROW(detail::parse_error::create(107, 1,
"JSON pointer must be empty or begin with '/' - was: '" +
reference_string + "'"));
}
// extract the reference tokens:
// - slash: position of the last read slash (or end of string)
// - start: position after the previous slash
for (
// search for the first slash after the first character
std::size_t slash = reference_string.find_first_of('/', 1),
// set the beginning of the first reference token
start = 1;
// we can stop if start == 0 (if slash == std::string::npos)
start != 0;
// set the beginning of the next reference token
// (will eventually be 0 if slash == std::string::npos)
start = (slash == std::string::npos) ? 0 : slash + 1,
// find next slash
slash = reference_string.find_first_of('/', start))
{
// use the text between the beginning of the reference token
// (start) and the last slash (slash).
auto reference_token = reference_string.substr(start, slash - start);
// check reference tokens are properly escaped
for (std::size_t pos = reference_token.find_first_of('~');
pos != std::string::npos;
pos = reference_token.find_first_of('~', pos + 1))
{
assert(reference_token[pos] == '~');
// ~ must be followed by 0 or 1
if (JSON_HEDLEY_UNLIKELY(pos == reference_token.size() - 1 or
(reference_token[pos + 1] != '0' and
reference_token[pos + 1] != '1')))
{
JSON_THROW(detail::parse_error::create(108, 0, "escape character '~' must be followed with '0' or '1'"));
}
}
// finally, store the reference token
unescape(reference_token);
result.push_back(reference_token);
}
return result;
}
|
negative_train_query0_00259
|
|
single_include/nlohmann/json.hpp/begin
const_iterator begin() const noexcept
{
return cbegin();
}
|
negative_train_query0_00260
|
|
single_include/nlohmann/json.hpp/insert
iterator insert(const_iterator pos, initializer_list_t ilist)
{
// insert only works for arrays
if (JSON_HEDLEY_UNLIKELY(not is_array()))
{
JSON_THROW(type_error::create(309, "cannot use insert() with " + std::string(type_name())));
}
// check if iterator pos fits to this JSON value
if (JSON_HEDLEY_UNLIKELY(pos.m_object != this))
{
JSON_THROW(invalid_iterator::create(202, "iterator does not fit current value"));
}
// insert to array and return iterator
return insert_iterator(pos, ilist.begin(), ilist.end());
}
|
negative_train_query0_00261
|
|
single_include/nlohmann/json.hpp/swap
void swap(string_t& other)
{
// swap only works for strings
if (JSON_HEDLEY_LIKELY(is_string()))
{
std::swap(*(m_value.string), other);
}
else
{
JSON_THROW(type_error::create(310, "cannot use swap() with " + std::string(type_name())));
}
}
|
negative_train_query0_00262
|
|
single_include/nlohmann/json.hpp/to_ubjson
static void to_ubjson(const basic_json& j, detail::output_adapter<char> o,
const bool use_size = false, const bool use_type = false)
{
binary_writer<char>(o).write_ubjson(j, use_size, use_type);
}
|
negative_train_query0_00263
|
|
single_include/nlohmann/json.hpp/JSON_INTERNAL_CATCH
ValueType value(const json_pointer& ptr, const ValueType& default_value) const
{
// at only works for objects
if (JSON_HEDLEY_LIKELY(is_object()))
{
// if pointer resolves a value, return it or use default value
JSON_TRY
{
return ptr.get_checked(this);
}
JSON_INTERNAL_CATCH (out_of_range&)
{
return default_value;
}
}
|
negative_train_query0_00264
|
|
single_include/nlohmann/json.hpp/get
auto get(const nlohmann::detail::iteration_proxy_value<IteratorType>& i) -> decltype(i.key())
{
return i.key();
}
|
negative_train_query0_00265
|
|
single_include/nlohmann/json.hpp/basic_json
basic_json(CompatibleType && val) noexcept(noexcept(
JSONSerializer<U>::to_json(std::declval<basic_json_t&>(),
std::forward<CompatibleType>(val))))
{
JSONSerializer<U>::to_json(*this, std::forward<CompatibleType>(val));
assert_invariant();
}
|
negative_train_query0_00266
|
|
single_include/nlohmann/json.hpp/update
void update(const_reference j)
{
// implicitly convert null value to an empty object
if (is_null())
{
m_type = value_t::object;
m_value.object = create<object_t>();
assert_invariant();
}
if (JSON_HEDLEY_UNLIKELY(not is_object()))
{
JSON_THROW(type_error::create(312, "cannot use update() with " + std::string(type_name())));
}
if (JSON_HEDLEY_UNLIKELY(not j.is_object()))
{
JSON_THROW(type_error::create(312, "cannot use update() with " + std::string(j.type_name())));
}
for (auto it = j.cbegin(); it != j.cend(); ++it)
{
m_value.object->operator[](it.key()) = it.value();
}
}
|
negative_train_query0_00267
|
|
single_include/nlohmann/json.hpp/object
JSON_HEDLEY_WARN_UNUSED_RESULT
static basic_json object(initializer_list_t init = {})
{
return basic_json(init, false, value_t::object);
}
|
negative_train_query0_00268
|
|
single_include/nlohmann/json.hpp/front
const_reference front() const
{
return *cbegin();
}
|
negative_train_query0_00269
|
|
single_include/nlohmann/json.hpp/erase
void erase(const size_type idx)
{
// this erase only works for arrays
if (JSON_HEDLEY_LIKELY(is_array()))
{
if (JSON_HEDLEY_UNLIKELY(idx >= size()))
{
JSON_THROW(out_of_range::create(401, "array index " + std::to_string(idx) + " is out of range"));
}
m_value.array->erase(m_value.array->begin() + static_cast<difference_type>(idx));
}
else
{
JSON_THROW(type_error::create(307, "cannot use erase() with " + std::string(type_name())));
}
}
|
negative_train_query0_00270
|
|
single_include/nlohmann/json.hpp/push_back
void push_back(const typename object_t::value_type& val)
{
// push_back only works for null objects or objects
if (JSON_HEDLEY_UNLIKELY(not(is_null() or is_object())))
{
JSON_THROW(type_error::create(308, "cannot use push_back() with " + std::string(type_name())));
}
// transform null object into an object
if (is_null())
{
m_type = value_t::object;
m_value = value_t::object;
assert_invariant();
}
// add element to array
m_value.object->insert(val);
}
|
negative_train_query0_00271
|
|
single_include/nlohmann/json.hpp/accept
static bool accept(detail::input_adapter&& i)
{
return parser(i).accept(true);
}
|
negative_train_query0_00272
|
|
single_include/nlohmann/json.hpp/from_json_array_impl
void from_json_array_impl(const BasicJsonType& j, ConstructibleArrayType& arr,
priority_tag<0> /*unused*/)
{
using std::end;
ConstructibleArrayType ret;
std::transform(
j.begin(), j.end(), std::inserter(ret, end(ret)),
[](const BasicJsonType & i)
{
// get<BasicJsonType>() returns *this, this won't call a from_json
// method when value_type is BasicJsonType
return i.template get<typename ConstructibleArrayType::value_type>();
});
arr = std::move(ret);
}
|
negative_train_query0_00273
|
|
single_include/nlohmann/json.hpp/construct
static void construct(BasicJsonType& j, typename BasicJsonType::boolean_t b) noexcept
{
j.m_type = value_t::boolean;
j.m_value = b;
j.assert_invariant();
}
|
negative_train_query0_00274
|
|
single_include/nlohmann/json.hpp/to_json
void to_json(BasicJsonType& j, const std::valarray<T>& arr)
{
external_constructor<value_t::array>::construct(j, std::move(arr));
}
|
negative_train_query0_00275
|
|
single_include/nlohmann/json.hpp/unflatten
basic_json unflatten() const
{
return json_pointer::unflatten(*this);
}
|
negative_train_query0_00276
|
|
single_include/nlohmann/json.hpp/is_null
constexpr bool is_null() const noexcept
{
return m_type == value_t::null;
}
|
negative_train_query0_00277
|
|
single_include/nlohmann/json.hpp/from_ubjson
JSON_HEDLEY_WARN_UNUSED_RESULT
static basic_json from_ubjson(A1 && a1, A2 && a2,
const bool strict = true,
const bool allow_exceptions = true)
{
basic_json result;
detail::json_sax_dom_parser<basic_json> sdp(result, allow_exceptions);
const bool res = binary_reader(detail::input_adapter(std::forward<A1>(a1), std::forward<A2>(a2))).sax_parse(input_format_t::ubjson, &sdp, strict);
return res ? result : basic_json(value_t::discarded);
}
|
negative_train_query0_00278
|
|
single_include/nlohmann/json.hpp/flatten
basic_json flatten() const
{
basic_json result(value_t::object);
json_pointer::flatten("", *this, result);
return result;
}
|
negative_train_query0_00279
|
|
single_include/nlohmann/json.hpp/is_discarded
constexpr bool is_discarded() const noexcept
{
return m_type == value_t::discarded;
}
|
negative_train_query0_00280
|
|
single_include/nlohmann/json.hpp/back
const_reference back() const
{
auto tmp = cend();
--tmp;
return *tmp;
}
|
negative_train_query0_00281
|
|
single_include/nlohmann/json.hpp/is_string
constexpr bool is_string() const noexcept
{
return m_type == value_t::string;
}
|
negative_train_query0_00282
|
|
single_include/nlohmann/json.hpp/JSON_CATCH
JSON_CATCH (std::out_of_range&)
{
// create better exception explanation
JSON_THROW(out_of_range::create(403, "key '" + key + "' not found"));
}
|
negative_train_query0_00283
|
|
single_include/nlohmann/json.hpp/to_msgpack
static void to_msgpack(const basic_json& j, detail::output_adapter<uint8_t> o)
{
binary_writer<uint8_t>(o).write_msgpack(j);
}
|
negative_train_query0_00284
|
|
single_include/nlohmann/json.hpp/replace_substring
static void replace_substring(std::string& s, const std::string& f,
const std::string& t)
{
assert(not f.empty());
for (auto pos = s.find(f); // find first occurrence of f
pos != std::string::npos; // make sure f was found
s.replace(pos, f.size(), t), // replace with t, and
pos = s.find(f, pos + t.size())) // find next occurrence of f
{}
}
|
negative_train_query0_00285
|
|
single_include/nlohmann/json.hpp/parse
static basic_json parse(IteratorType first, IteratorType last,
const parser_callback_t cb = nullptr,
const bool allow_exceptions = true)
{
basic_json result;
parser(detail::input_adapter(first, last), cb, allow_exceptions).parse(true, result);
return result;
}
|
negative_train_query0_00286
|
|
single_include/nlohmann/json.hpp/compute_boundaries
boundaries compute_boundaries(FloatType value)
{
assert(std::isfinite(value));
assert(value > 0);
// Convert the IEEE representation into a diyfp.
//
// If v is denormal:
// value = 0.F * 2^(1 - bias) = ( F) * 2^(1 - bias - (p-1))
// If v is normalized:
// value = 1.F * 2^(E - bias) = (2^(p-1) + F) * 2^(E - bias - (p-1))
static_assert(std::numeric_limits<FloatType>::is_iec559,
"internal error: dtoa_short requires an IEEE-754 floating-point implementation");
constexpr int kPrecision = std::numeric_limits<FloatType>::digits; // = p (includes the hidden bit)
constexpr int kBias = std::numeric_limits<FloatType>::max_exponent - 1 + (kPrecision - 1);
constexpr int kMinExp = 1 - kBias;
constexpr std::uint64_t kHiddenBit = std::uint64_t{1} << (kPrecision - 1); // = 2^(p-1)
using bits_type = typename std::conditional<kPrecision == 24, std::uint32_t, std::uint64_t >::type;
const std::uint64_t bits = reinterpret_bits<bits_type>(value);
const std::uint64_t E = bits >> (kPrecision - 1);
const std::uint64_t F = bits & (kHiddenBit - 1);
const bool is_denormal = E == 0;
const diyfp v = is_denormal
? diyfp(F, kMinExp)
: diyfp(F + kHiddenBit, static_cast<int>(E) - kBias);
// Compute the boundaries m- and m+ of the floating-point value
// v = f * 2^e.
//
// Determine v- and v+, the floating-point predecessor and successor if v,
// respectively.
//
// v- = v - 2^e if f != 2^(p-1) or e == e_min (A)
// = v - 2^(e-1) if f == 2^(p-1) and e > e_min (B)
//
// v+ = v + 2^e
//
// Let m- = (v- + v) / 2 and m+ = (v + v+) / 2. All real numbers _strictly_
// between m- and m+ round to v, regardless of how the input rounding
// algorithm breaks ties.
//
// ---+-------------+-------------+-------------+-------------+--- (A)
// v- m- v m+ v+
//
// -----------------+------+------+-------------+-------------+--- (B)
// v- m- v m+ v+
const bool lower_boundary_is_closer = F == 0 and E > 1;
const diyfp m_plus = diyfp(2 * v.f + 1, v.e - 1);
const diyfp m_minus = lower_boundary_is_closer
? diyfp(4 * v.f - 1, v.e - 2) // (B)
: diyfp(2 * v.f - 1, v.e - 1); // (A)
// Determine the normalized w+ = m+.
const diyfp w_plus = diyfp::normalize(m_plus);
// Determine w- = m- such that e_(w-) = e_(w+).
const diyfp w_minus = diyfp::normalize_to(m_minus, w_plus.e);
return {diyfp::normalize(v), w_minus, w_plus};
}
|
negative_train_query0_00287
|
|
single_include/nlohmann/json.hpp/patch
basic_json patch(const basic_json& json_patch) const
{
// make a working copy to apply the patch to
basic_json result = *this;
// the valid JSON Patch operations
enum class patch_operations {add, remove, replace, move, copy, test, invalid};
const auto get_op = [](const std::string & op)
{
if (op == "add")
{
return patch_operations::add;
}
if (op == "remove")
{
return patch_operations::remove;
}
if (op == "replace")
{
return patch_operations::replace;
}
if (op == "move")
{
return patch_operations::move;
}
if (op == "copy")
{
return patch_operations::copy;
}
if (op == "test")
{
return patch_operations::test;
}
return patch_operations::invalid;
};
// wrapper for "add" operation; add value at ptr
const auto operation_add = [&result](json_pointer & ptr, basic_json val)
{
// adding to the root of the target document means replacing it
if (ptr.empty())
{
result = val;
return;
}
// make sure the top element of the pointer exists
json_pointer top_pointer = ptr.top();
if (top_pointer != ptr)
{
result.at(top_pointer);
}
// get reference to parent of JSON pointer ptr
const auto last_path = ptr.back();
ptr.pop_back();
basic_json& parent = result[ptr];
switch (parent.m_type)
{
case value_t::null:
case value_t::object:
{
// use operator[] to add value
parent[last_path] = val;
break;
}
case value_t::array:
{
if (last_path == "-")
{
// special case: append to back
parent.push_back(val);
}
else
{
const auto idx = json_pointer::array_index(last_path);
if (JSON_HEDLEY_UNLIKELY(static_cast<size_type>(idx) > parent.size()))
{
// avoid undefined behavior
JSON_THROW(out_of_range::create(401, "array index " + std::to_string(idx) + " is out of range"));
}
// default case: insert add offset
parent.insert(parent.begin() + static_cast<difference_type>(idx), val);
}
break;
}
// if there exists a parent it cannot be primitive
default: // LCOV_EXCL_LINE
assert(false); // LCOV_EXCL_LINE
}
};
// wrapper for "remove" operation; remove value at ptr
const auto operation_remove = [&result](json_pointer & ptr)
{
// get reference to parent of JSON pointer ptr
const auto last_path = ptr.back();
ptr.pop_back();
basic_json& parent = result.at(ptr);
// remove child
if (parent.is_object())
{
// perform range check
auto it = parent.find(last_path);
if (JSON_HEDLEY_LIKELY(it != parent.end()))
{
parent.erase(it);
}
else
{
JSON_THROW(out_of_range::create(403, "key '" + last_path + "' not found"));
}
}
else if (parent.is_array())
{
// note erase performs range check
parent.erase(static_cast<size_type>(json_pointer::array_index(last_path)));
}
};
// type check: top level value must be an array
if (JSON_HEDLEY_UNLIKELY(not json_patch.is_array()))
{
JSON_THROW(parse_error::create(104, 0, "JSON patch must be an array of objects"));
}
// iterate and apply the operations
for (const auto& val : json_patch)
{
// wrapper to get a value for an operation
const auto get_value = [&val](const std::string & op,
const std::string & member,
bool string_type) -> basic_json &
{
// find value
auto it = val.m_value.object->find(member);
// context-sensitive error message
const auto error_msg = (op == "op") ? "operation" : "operation '" + op + "'";
// check if desired value is present
if (JSON_HEDLEY_UNLIKELY(it == val.m_value.object->end()))
{
JSON_THROW(parse_error::create(105, 0, error_msg + " must have member '" + member + "'"));
}
// check if result is of type string
if (JSON_HEDLEY_UNLIKELY(string_type and not it->second.is_string()))
{
JSON_THROW(parse_error::create(105, 0, error_msg + " must have string member '" + member + "'"));
}
// no error: return value
return it->second;
};
// type check: every element of the array must be an object
if (JSON_HEDLEY_UNLIKELY(not val.is_object()))
{
JSON_THROW(parse_error::create(104, 0, "JSON patch must be an array of objects"));
}
// collect mandatory members
const std::string op = get_value("op", "op", true);
const std::string path = get_value(op, "path", true);
json_pointer ptr(path);
switch (get_op(op))
{
case patch_operations::add:
{
operation_add(ptr, get_value("add", "value", false));
break;
}
case patch_operations::remove:
{
operation_remove(ptr);
break;
}
case patch_operations::replace:
{
// the "path" location must exist - use at()
result.at(ptr) = get_value("replace", "value", false);
break;
}
case patch_operations::move:
{
const std::string from_path = get_value("move", "from", true);
json_pointer from_ptr(from_path);
// the "from" location must exist - use at()
basic_json v = result.at(from_ptr);
// The move operation is functionally identical to a
// "remove" operation on the "from" location, followed
// immediately by an "add" operation at the target
// location with the value that was just removed.
operation_remove(from_ptr);
operation_add(ptr, v);
break;
}
case patch_operations::copy:
{
const std::string from_path = get_value("copy", "from", true);
const json_pointer from_ptr(from_path);
// the "from" location must exist - use at()
basic_json v = result.at(from_ptr);
// The copy is functionally identical to an "add"
// operation at the target location using the value
// specified in the "from" member.
operation_add(ptr, v);
break;
}
case patch_operations::test:
{
bool success = false;
JSON_TRY
{
// check if "value" matches the one at "path"
// the "path" location must exist - use at()
success = (result.at(ptr) == get_value("test", "value", false));
}
JSON_INTERNAL_CATCH (out_of_range&)
{
// ignore out of range errors: success remains false
}
// throw an exception if test fails
if (JSON_HEDLEY_UNLIKELY(not success))
{
JSON_THROW(other_error::create(501, "unsuccessful: " + val.dump()));
}
break;
}
default:
{
// op must be "add", "remove", "replace", "move", "copy", or
// "test"
JSON_THROW(parse_error::create(105, 0, "operation value '" + op + "' is invalid"));
}
}
}
|
negative_train_query0_00288
|
|
single_include/nlohmann/json.hpp/crend
const_reverse_iterator crend() const noexcept
{
return const_reverse_iterator(cbegin());
}
|
negative_train_query0_00289
|
|
single_include/nlohmann/json.hpp/emplace_back
reference emplace_back(Args&& ... args)
{
// emplace_back only works for null objects or arrays
if (JSON_HEDLEY_UNLIKELY(not(is_null() or is_array())))
{
JSON_THROW(type_error::create(311, "cannot use emplace_back() with " + std::string(type_name())));
}
// transform null object into an array
if (is_null())
{
m_type = value_t::array;
m_value = value_t::array;
assert_invariant();
}
// add element to array (perfect forwarding)
#ifdef JSON_HAS_CPP_17
return m_value.array->emplace_back(std::forward<Args>(args)...);
#else
m_value.array->emplace_back(std::forward<Args>(args)...);
return m_value.array->back();
#endif
}
|
negative_train_query0_00290
|
|
single_include/nlohmann/json.hpp/to_bson
static void to_bson(const basic_json& j, detail::output_adapter<uint8_t> o)
{
binary_writer<uint8_t>(o).write_bson(j);
}
|
negative_train_query0_00291
|
|
single_include/nlohmann/json.hpp/at
reference at(const json_pointer& ptr)
{
return ptr.get_checked(this);
}
|
negative_train_query0_00292
|
|
single_include/nlohmann/json.hpp/value
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()))
{
// if key is found, return value and given default value otherwise
const auto it = find(key);
if (it != end())
{
return *it;
}
return default_value;
}
JSON_THROW(type_error::create(306, "cannot use value() with " + std::string(type_name())));
}
|
negative_train_query0_00293
|
|
single_include/nlohmann/json.hpp/from_msgpack
JSON_HEDLEY_WARN_UNUSED_RESULT
static basic_json from_msgpack(detail::input_adapter&& i,
const bool strict = true,
const bool allow_exceptions = true)
{
basic_json result;
detail::json_sax_dom_parser<basic_json> sdp(result, allow_exceptions);
const bool res = binary_reader(detail::input_adapter(i)).sax_parse(input_format_t::msgpack, &sdp, strict);
return res ? result : basic_json(value_t::discarded);
}
|
negative_train_query0_00294
|
|
single_include/nlohmann/json.hpp/from_bson
JSON_HEDLEY_WARN_UNUSED_RESULT
static basic_json from_bson(A1 && a1, A2 && a2,
const bool strict = true,
const bool allow_exceptions = true)
{
basic_json result;
detail::json_sax_dom_parser<basic_json> sdp(result, allow_exceptions);
const bool res = binary_reader(detail::input_adapter(std::forward<A1>(a1), std::forward<A2>(a2))).sax_parse(input_format_t::bson, &sdp, strict);
return res ? result : basic_json(value_t::discarded);
}
|
negative_train_query0_00295
|
|
single_include/nlohmann/json.hpp/is_number_float
constexpr bool is_number_float() const noexcept
{
return m_type == value_t::number_float;
}
|
negative_train_query0_00296
|
|
single_include/nlohmann/json.hpp/reinterpret_bits
Target reinterpret_bits(const Source source)
{
static_assert(sizeof(Target) == sizeof(Source), "size mismatch");
Target target;
std::memcpy(&target, &source, sizeof(Source));
return target;
}
|
negative_train_query0_00297
|
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