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[libsolutil] Add new JSON helper functions.
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‎libsolutil/JSON.h‎

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@@ -67,4 +67,67 @@ std::string jsonPrint(Json::Value const& _input, JsonFormat const& _format);
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/// \return \c true if the document was successfully parsed, \c false if an error occurred.
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bool jsonParseStrict(std::string const& _input, Json::Value& _json, std::string* _errs = nullptr);
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namespace detail
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{
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template<typename T>
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struct helper;
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#define DEFINE_HELPER(TYPE, CHECK_TYPE, CONVERT_TYPE) \
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template<> \
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struct helper<TYPE> \
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{ \
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static bool ofType(Json::Value const& _input, std::string const& _name) \
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{ \
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return _input[_name].CHECK_TYPE(); \
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} \
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static TYPE get(Json::Value const& _input, std::string const& _name) \
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{ \
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return _input[_name].CONVERT_TYPE(); \
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} \
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static TYPE getOrDefault(Json::Value const& _input, std::string const& _name, TYPE _default = {}) \
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{ \
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TYPE result = _default; \
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if (helper::ofType(_input, _name)) \
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result = _input[_name].CONVERT_TYPE(); \
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return result; \
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} \
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};
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DEFINE_HELPER(float, isDouble, asFloat)
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DEFINE_HELPER(double, isDouble, asDouble)
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DEFINE_HELPER(std::string, isString, asString)
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DEFINE_HELPER(Json::Int, isInt, asInt)
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DEFINE_HELPER(Json::Int64, isInt64, asInt64)
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DEFINE_HELPER(Json::UInt, isUInt, asUInt)
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DEFINE_HELPER(Json::UInt64, isUInt64, asUInt64)
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} // namespace detail
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template<typename T>
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bool ofType(Json::Value const& _input, std::string const& _name)
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{
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return detail::helper<T>::ofType(_input, _name);
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}
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template<typename T>
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bool ofTypeIfExists(Json::Value const& _input, std::string const& _name)
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{
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if (_input.isMember(_name))
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return ofType<T>(_input, _name);
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return true;
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}
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template<typename T>
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T get(Json::Value const& _input, std::string const& _name)
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{
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return detail::helper<T>::get(_input, _name);
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}
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template<typename T>
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T getOrDefault(Json::Value const& _input, std::string const& _name, T _default = {})
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{
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return detail::helper<T>::getOrDefault(_input, _name, _default);
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}
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} // namespace solidity::util

‎test/libsolutil/JSON.cpp‎

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@@ -184,6 +184,131 @@ BOOST_AUTO_TEST_CASE(parse_json_strict)
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BOOST_CHECK(json[0] == "😊");
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}
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BOOST_AUTO_TEST_CASE(json_ofType)
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{
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Json::Value json;
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json["float"] = 3.1f;
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json["double"] = 3.1;
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json["int"] = 2;
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json["int64"] = Json::Int64{0x4000000000000000};
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json["string"] = "Hello World!";
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BOOST_CHECK(ofType<float>(json, "float"));
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BOOST_CHECK(ofType<double>(json, "double"));
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BOOST_CHECK(ofType<int>(json, "int"));
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BOOST_CHECK(ofType<Json::Int>(json, "int"));
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BOOST_CHECK(ofType<Json::UInt>(json, "int"));
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BOOST_CHECK(ofType<Json::Int64>(json, "int"));
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BOOST_CHECK(ofType<Json::Int64>(json, "int64"));
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BOOST_CHECK(ofType<Json::UInt64>(json, "int64"));
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BOOST_CHECK(ofType<std::string>(json, "string"));
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BOOST_CHECK(!ofType<Json::Int>(json, "int64"));
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BOOST_CHECK(!ofType<int>(json, "double"));
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BOOST_CHECK(!ofType<float>(json, "string"));
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BOOST_CHECK(!ofType<double>(json, "string"));
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BOOST_CHECK(!ofType<Json::Int>(json, "string"));
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BOOST_CHECK(!ofType<Json::Int64>(json, "string"));
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BOOST_CHECK(!ofType<Json::UInt>(json, "string"));
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BOOST_CHECK(!ofType<Json::UInt64>(json, "string"));
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}
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BOOST_AUTO_TEST_CASE(json_ofTypeIfExists)
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{
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Json::Value json;
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json["float"] = 3.1f;
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json["double"] = 3.1;
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json["int"] = 2;
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json["int64"] = Json::Int64{0x4000000000000000};
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json["string"] = "Hello World!";
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BOOST_CHECK(ofTypeIfExists<float>(json, "float"));
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BOOST_CHECK(ofTypeIfExists<double>(json, "double"));
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BOOST_CHECK(ofTypeIfExists<int>(json, "int"));
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BOOST_CHECK(ofTypeIfExists<Json::Int>(json, "int"));
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BOOST_CHECK(ofTypeIfExists<Json::UInt>(json, "int"));
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BOOST_CHECK(ofTypeIfExists<Json::Int64>(json, "int"));
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BOOST_CHECK(ofTypeIfExists<Json::Int64>(json, "int64"));
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BOOST_CHECK(ofTypeIfExists<Json::UInt64>(json, "int64"));
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BOOST_CHECK(ofTypeIfExists<std::string>(json, "string"));
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BOOST_CHECK(!ofTypeIfExists<Json::Int>(json, "int64"));
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BOOST_CHECK(!ofTypeIfExists<int>(json, "double"));
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BOOST_CHECK(!ofTypeIfExists<float>(json, "string"));
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BOOST_CHECK(!ofTypeIfExists<double>(json, "string"));
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BOOST_CHECK(!ofTypeIfExists<Json::Int>(json, "string"));
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BOOST_CHECK(!ofTypeIfExists<Json::Int64>(json, "string"));
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BOOST_CHECK(!ofTypeIfExists<Json::UInt>(json, "string"));
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BOOST_CHECK(!ofTypeIfExists<Json::UInt64>(json, "string"));
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BOOST_CHECK(ofTypeIfExists<Json::UInt64>(json, "NOT_EXISTING"));
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}
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BOOST_AUTO_TEST_CASE(json_getOrDefault)
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{
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Json::Value json;
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json["float"] = 3.1f;
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json["double"] = 3.1;
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json["int"] = 2;
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json["int64"] = Json::Int64{0x4000000000000000};
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json["uint64"] = Json::UInt64{0x5000000000000000};
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json["string"] = "Hello World!";
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BOOST_CHECK(getOrDefault<float>(json, "float") == 3.1f);
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BOOST_CHECK(getOrDefault<float>(json, "float", -1.1f) == 3.1f);
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BOOST_CHECK(getOrDefault<float>(json, "no_float", -1.1f) == -1.1f);
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BOOST_CHECK(getOrDefault<double>(json, "double") == 3.1);
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BOOST_CHECK(getOrDefault<double>(json, "double", -1) == 3.1);
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BOOST_CHECK(getOrDefault<double>(json, "no_double", -1.1) == -1.1);
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BOOST_CHECK(getOrDefault<int>(json, "int") == 2);
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BOOST_CHECK(getOrDefault<int>(json, "int", -1) == 2);
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BOOST_CHECK(getOrDefault<int>(json, "no_int", -1) == -1);
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BOOST_CHECK(getOrDefault<Json::Int>(json, "int") == 2);
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BOOST_CHECK(getOrDefault<Json::Int>(json, "int", -1) == 2);
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BOOST_CHECK(getOrDefault<Json::Int>(json, "no_int", -1) == -1);
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BOOST_CHECK(getOrDefault<Json::UInt>(json, "int") == 2);
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BOOST_CHECK(getOrDefault<Json::UInt>(json, "int", 1) == 2);
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BOOST_CHECK(getOrDefault<Json::UInt>(json, "no_int", 1) == 1);
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BOOST_CHECK(getOrDefault<Json::Int64>(json, "int") == 2);
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BOOST_CHECK(getOrDefault<Json::Int64>(json, "int", -1) == 2);
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BOOST_CHECK(getOrDefault<Json::Int64>(json, "no_int", -1) == -1);
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BOOST_CHECK(getOrDefault<Json::Int64>(json, "int64") == 0x4000000000000000);
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BOOST_CHECK(getOrDefault<Json::Int64>(json, "int64", -1) == 0x4000000000000000);
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BOOST_CHECK(getOrDefault<Json::Int64>(json, "no_int64", -1) == -1);
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BOOST_CHECK(getOrDefault<Json::UInt64>(json, "int64") == 0x4000000000000000);
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BOOST_CHECK(getOrDefault<Json::UInt64>(json, "int64", 1) == 0x4000000000000000);
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BOOST_CHECK(getOrDefault<Json::UInt64>(json, "no_int64", 1) == 1);
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BOOST_CHECK(getOrDefault<Json::UInt64>(json, "uint64") == 0x5000000000000000);
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BOOST_CHECK(getOrDefault<Json::UInt64>(json, "uint64", 1) == 0x5000000000000000);
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BOOST_CHECK(getOrDefault<Json::UInt64>(json, "no_uint64", 1) == 1);
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BOOST_CHECK(getOrDefault<std::string>(json, "string", "ERROR") == "Hello World!");
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BOOST_CHECK(getOrDefault<std::string>(json, "no_string").empty());
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BOOST_CHECK(getOrDefault<std::string>(json, "no_string", "ERROR") == "ERROR");
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}
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BOOST_AUTO_TEST_CASE(json_get)
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{
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Json::Value json;
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json["float"] = 3.1f;
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json["double"] = 3.1;
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json["int"] = 2;
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json["int64"] = Json::Int64{0x4000000000000000};
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json["uint64"] = Json::UInt64{0x5000000000000000};
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json["string"] = "Hello World!";
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BOOST_CHECK(get<float>(json, "float") == 3.1f);
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BOOST_CHECK(get<double>(json, "double") == 3.1);
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BOOST_CHECK(get<int>(json, "int") == 2);
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BOOST_CHECK(get<Json::Int>(json, "int") == 2);
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BOOST_CHECK(get<Json::UInt>(json, "int") == 2);
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BOOST_CHECK(get<Json::Int64>(json, "int") == 2);
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BOOST_CHECK(get<Json::Int64>(json, "int64") == 0x4000000000000000);
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BOOST_CHECK(get<Json::UInt64>(json, "int64") == 0x4000000000000000);
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BOOST_CHECK(get<Json::UInt64>(json, "uint64") == 0x5000000000000000);
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BOOST_CHECK(get<std::string>(json, "string") == "Hello World!");
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}
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BOOST_AUTO_TEST_SUITE_END()
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}

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