32 lines
1.3 KiB
C
32 lines
1.3 KiB
C
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#include "jsoncpp.h"
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#pragma once
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namespace JsonEx {
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template <typename T> bool is (const Json::Value &val) { return false; }
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template <typename T> T as (const Json::Value &val);
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template <typename T> T get (const Json::Value &val, const std::string &key, const T &default_) { return default_; }
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#define define_helpers(type, is_func, as_func) \
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template<> inline bool is<type> (const Json::Value &val) { return val.is_func(); } \
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template<> inline type as<type> (const Json::Value &val) { return val.as_func(); } \
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template<> inline type get<type> (const Json::Value &val, const std::string &key, const type &default_) \
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{ Json::Value x = val[key]; return is<type>(x) ? as<type>(x) : default_; }
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define_helpers(bool, isBool, asBool);
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define_helpers(Json::Int, isInt, asInt);
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define_helpers(Json::UInt, isUInt, asUInt);
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define_helpers(Json::Int64, isInt64, asInt64);
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define_helpers(Json::UInt64, isUInt64, asUInt64);
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define_helpers(float, isDouble, asFloat);
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define_helpers(double, isDouble, asDouble);
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define_helpers(std::string, isString, asString);
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#undef define_helpers
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inline std::string toSimpleString (const Json::Value &val)
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{
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Json::FastWriter w;
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return w.write(val);
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}
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}
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