#include "json/json.h" #pragma once namespace Json { template <typename T> bool is (const Json::Value &val) { return false; } template <typename T> T as (const Json::Value &val); template <typename T> T get (const Json::Value &val, const std::string &key, const T &default_) { return default_; } #define define_helpers(type, is_func, as_func) \ template<> inline bool is<type> (const Json::Value &val) { return val.is_func(); } \ template<> inline type as<type> (const Json::Value &val) { return val.as_func(); } \ template<> inline type get<type> (const Json::Value &val, const std::string &key, const type &default_) \ { const Json::Value &x = val[key]; return is<type>(x) ? as<type>(x) : default_; } define_helpers(bool, isBool, asBool); define_helpers(Json::Int, isInt, asInt); define_helpers(Json::UInt, isUInt, asUInt); define_helpers(Json::Int64, isInt64, asInt64); define_helpers(Json::UInt64, isUInt64, asUInt64); define_helpers(float, isDouble, asFloat); define_helpers(double, isDouble, asDouble); define_helpers(std::string, isString, asString); #undef define_helpers inline std::string toSimpleString (const Json::Value &val) { StreamWriterBuilder builder; builder["commentStyle"] = "None"; builder["indentation"] = "\t"; return writeString(builder, val); } }