Robin Davies
1078 lines
31 KiB
C++
1078 lines
31 KiB
C++
// Copyright (c) 2022 Robin Davies
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy of
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// this software and associated documentation files (the "Software"), to deal in
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// the Software without restriction, including without limitation the rights to
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// use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
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// the Software, and to permit persons to whom the Software is furnished to do so,
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// subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in all
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// copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
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// FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
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// COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
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// IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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// CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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#pragma once
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#include <iostream>
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#include <cstdint>
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#include <boost/utility/string_view.hpp>
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#include <boost/format.hpp>
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#include <iomanip>
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#include <type_traits>
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#include <sstream>
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#include "HtmlHelper.hpp"
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#include <cctype>
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#include <cmath>
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#include "PiPedalException.hpp"
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#include <map>
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#include <variant>
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#include <concepts>
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#include <limits>
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#define DECLARE_JSON_MAP(CLASSNAME) \
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static json_map::storage_type<CLASSNAME> jmap
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#define JSON_MAP_BEGIN(CLASSNAME) \
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json_map::storage_type<CLASSNAME> CLASSNAME::jmap \
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{ \
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{
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#define JSON_MAP_REFERENCE(class, name) \
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json_map::reference(#name, &class ::name##_),
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#define JSON_MAP_REFERENCE_CONDITIONAL(class, name, conditionFn) \
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json_map::conditional_reference(#name, &class ::name##_, conditionFn),
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#define JSON_MAP_END() \
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} \
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} \
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;
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namespace pipedal
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{
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// a function pointer of type bool (*)(const CLASS*,const MEMBER_TYPE&value) (because pre-C++ 20 templated function pointers are *hard*)
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template <typename CLASS, typename MEMBER_TYPE>
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class JsonConditionFunction
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{
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public:
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using Pointer = bool (*)(const CLASS *self, const MEMBER_TYPE &value);
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};
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//----------------------------------------------------------------------------------
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class json_reader;
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class json_writer;
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class JsonSerializable
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{
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public:
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virtual void write_json(json_writer &writer) const = 0;
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virtual void read_json(json_reader &reader) = 0;
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};
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template <typename T>
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concept IsJsonSerializable = std::derived_from<T,JsonSerializable>;
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class JsonMemberWritable
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{
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public:
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virtual void write_members(json_writer &writer) const = 0;
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};
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template <typename CLASS>
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class json_member_reference_base
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{
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private:
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const char *name_;
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protected:
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json_member_reference_base(const char *name)
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: name_(name)
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{
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}
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public:
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virtual ~json_member_reference_base() {}
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const char *name() { return this->name_; }
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virtual bool canWrite(const CLASS *self) { return true; }
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virtual void read_value(json_reader &reader, CLASS *self) = 0;
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virtual void write_value(json_writer &writer, const CLASS *self) = 0;
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};
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template <typename CLASS, typename MEMBER_TYPE>
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class json_member_reference : public json_member_reference_base<CLASS>
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{
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public:
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virtual ~json_member_reference() {}
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json_member_reference(const char *name, MEMBER_TYPE CLASS::*member_pointer)
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: json_member_reference_base<CLASS>(name), member_pointer(member_pointer)
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{
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}
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MEMBER_TYPE CLASS::*member_pointer;
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void read_value(json_reader &reader, CLASS *self);
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void write_value(json_writer &writer, const CLASS *self);
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};
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template <typename CLASS, typename MEMBER_TYPE>
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class json_conditional_member_reference : public json_member_reference_base<CLASS>
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{
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public:
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virtual ~json_conditional_member_reference() {}
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json_conditional_member_reference(const char *name, MEMBER_TYPE CLASS::*member_pointer, typename JsonConditionFunction<CLASS, MEMBER_TYPE>::Pointer condition)
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: json_member_reference_base<CLASS>(name), member_pointer(member_pointer), condition_(condition)
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{
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}
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MEMBER_TYPE CLASS::*member_pointer;
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typename JsonConditionFunction<CLASS, MEMBER_TYPE>::Pointer condition_;
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virtual bool canWrite(const CLASS *self);
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void read_value(json_reader &reader, CLASS *self);
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void write_value(json_writer &writer, const CLASS *self);
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};
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template <typename CLASS>
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class json_enum_converter
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{
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public:
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virtual CLASS fromString(const std::string &value) const = 0;
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virtual const std::string &toString(CLASS value) const = 0;
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};
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template <typename CLASS, typename MEMBER_TYPE>
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class json_enum_member_reference : public json_member_reference_base<CLASS>
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{
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public:
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json_enum_member_reference(const char *name, MEMBER_TYPE CLASS::*member_pointer, const json_enum_converter<MEMBER_TYPE> *converter)
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: json_member_reference_base<CLASS>(name), member_pointer(member_pointer), converter_(converter)
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{
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}
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MEMBER_TYPE CLASS::*member_pointer;
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const json_enum_converter<MEMBER_TYPE> *converter_;
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void read_value(json_reader &reader, CLASS *self);
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void write_value(json_writer &writer, const CLASS *self);
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};
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//----------------------------------------------------------------------------------
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class json_map_base
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{
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};
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template <typename CLASS>
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class json_map_impl : public json_map_base
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{
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private:
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std::vector<json_member_reference_base<CLASS> *> members_;
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json_map_impl(const json_map_impl &) {} // disable copy constructor.
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public:
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using members_t = std::vector<json_member_reference_base<CLASS> *>;
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json_map_impl(const members_t &members)
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: members_(members)
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{
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}
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json_map_impl(members_t &&members)
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: members_(std::forward<members_t>(members))
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{
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}
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virtual ~json_map_impl()
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{
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for (auto member : members_)
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{
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delete member;
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}
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members_.resize(0);
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}
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void read_property(json_reader *reader, const char *memberName, CLASS *pObject);
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void write_members(json_writer *writer, const CLASS *pObject);
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};
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class json_map
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{
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public:
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template <typename CLASS>
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class storage_type : public json_map_impl<CLASS>
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{
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public:
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using members_t = std::vector<json_member_reference_base<CLASS> *>;
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storage_type(const members_t &members)
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: json_map_impl<CLASS>(members)
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{
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}
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storage_type(members_t &&members)
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: json_map_impl<CLASS>(std::forward<members_t>(members))
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{
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}
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};
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template <typename CLASS, typename MEMBER_TYPE>
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static json_member_reference<CLASS, MEMBER_TYPE> *
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reference(const char *name, MEMBER_TYPE CLASS::*member_pointer)
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{
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return new json_member_reference<CLASS, MEMBER_TYPE>(name, member_pointer);
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};
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template <typename CLASS, typename MEMBER_TYPE, typename ENUM_CONVERTER>
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static json_enum_member_reference<CLASS, MEMBER_TYPE> *
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enum_reference(
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const char *name,
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MEMBER_TYPE CLASS::*member_pointer,
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const ENUM_CONVERTER *converter)
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{
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return new json_enum_member_reference<CLASS, MEMBER_TYPE>(name, member_pointer, converter);
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};
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template <typename CLASS, typename MEMBER_TYPE>
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static json_conditional_member_reference<CLASS, MEMBER_TYPE> *
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conditional_reference(const char *name, MEMBER_TYPE CLASS::*member_pointer, typename JsonConditionFunction<CLASS, MEMBER_TYPE>::Pointer condition)
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{
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return new json_conditional_member_reference<CLASS, MEMBER_TYPE>(name, member_pointer, condition);
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};
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};
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//----------------------------------------------------------------------------------
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template <typename T>
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class HasJsonPropertyMap
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{
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template <class TYPE>
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static std::true_type test(decltype(TYPE::jmap) *) { return std::true_type(); };
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template <class TYPE>
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static std::false_type test(...);
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public:
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static constexpr bool value = decltype(test<T>(nullptr))::value;
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};
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template <typename T>
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class HasExplicitJsonWrite
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{
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template <class TYPE>
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static std::true_type test() { return std::true_type(); };
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template <class TYPE>
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static std::false_type test(...);
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public:
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static constexpr bool value = decltype(test<T>(nullptr))::value;
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};
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//----------------------------------------------------------------------------------
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class json_writer;
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class json_writer
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{
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public:
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const char *CRLF;
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private:
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bool allowNaN_ = false;
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std::ostream &os;
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int indent_level;
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bool compressed;
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const int TAB_SIZE = 2;
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const uint16_t UTF16_SURROGATE_1_BASE = 0xD800U;
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const uint16_t UTF16_SURROGATE_2_BASE = 0xDC00U;
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const uint16_t UTF16_SURROGATE_MASK = 0x3FFFU;
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static const uint32_t UTF8_ONE_BYTE_MASK = 0x80;
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static const uint32_t UTF8_ONE_BYTE_BITS = 0;
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static const uint32_t UTF8_TWO_BYTES_MASK = 0xE0;
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static const uint32_t UTF8_TWO_BYTES_BITS = 0xC0;
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static const uint32_t UTF8_THREE_BYTES_MASK = 0xF0;
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static const uint32_t UTF8_THREE_BYTES_BITS = 0xE0;
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static const uint32_t UTF8_FOUR_BYTES_MASK = 0xF8;
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static const uint32_t UTF8_FOUR_BYTES_BITS = 0xF0;
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static const uint32_t UTF8_CONTINUATION_MASK = 0xC0;
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static const uint32_t UTF8_CONTINUATION_BITS = 0x80;
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public:
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static std::string encode_string(const std::string &text)
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{
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std::stringstream s;
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json_writer writer(s);
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writer.write(text);
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return s.str();
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}
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void write_raw(const char *text)
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{
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os << text;
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}
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using string_view = boost::string_view;
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json_writer(std::ostream &os, bool compressed = true, bool allowNaN = false)
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: os(os), compressed(compressed), allowNaN_(allowNaN), indent_level(0)
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{
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this->CRLF = compressed ? "" : "\r\n";
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}
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bool allowNaN() const { return allowNaN_; }
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void allowNaN(bool allow) { allowNaN_ = allow; }
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void write(long long value)
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{
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os << value;
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}
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void write(unsigned long long value)
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{
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os << value;
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}
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void write(long value)
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{
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os << value;
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}
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void write(unsigned long value)
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{
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os << value;
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}
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void write(int value)
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{
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os << value;
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}
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void write(unsigned int value)
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{
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os << value;
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}
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private:
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static void throw_encoding_error();
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static uint32_t continuation_byte(std::string_view::iterator &p, std::string_view::const_iterator end);
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void write_utf16_char(uint16_t uc);
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public:
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void indent();
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std::ostream &output_stream() { return os; }
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void write(bool value)
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{
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os << (value ? "true" : "false");
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}
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void write(
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string_view v,
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bool enforceValidUtf8 // throw errors for illegal (non-minimal) UTF-8 sequences.
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);
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void write(string_view v)
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{
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write(v, true);
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}
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void write(const char *p)
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{
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write(string_view(p));
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}
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void write(const std::string &s)
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{
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write(string_view(s.c_str()));
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}
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void write(float f)
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{
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if ((std::isnan(f) || std::isinf(f)))
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{
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if (allowNaN_)
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{
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os << "NaN";
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} else {
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os << std::numeric_limits<float>::max();
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}
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}
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else
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{
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os << std::setprecision(std::numeric_limits<float>::max_digits10) << f; // round-trip format
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}
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}
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void write(double f)
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{
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if ((std::isnan(f) || std::isinf(f)))
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{
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if (allowNaN_)
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{
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os << "NaN";
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} else {
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os << std::numeric_limits<float>::max();
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}
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}
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else
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{
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os << std::setprecision(std::numeric_limits<double>::max_digits10) << f; // round-trip format
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}
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}
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template <typename T>
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void write(const std::vector<T> &value)
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{
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if (std::is_fundamental<T>() || std::is_assignable<T, const char *>() || value.size() == 0)
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{
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// simple types: all on same line.
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os << "[ ";
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if (value.size() >= 1)
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{
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write(value[0]);
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}
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for (size_t i = 1; i < value.size(); ++i)
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{
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os << ",";
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write(value[i]);
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}
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os << "]";
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}
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else
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{
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// complex types: one line per entry.
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os << "[" << CRLF;
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indent_level += TAB_SIZE;
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bool first = true;
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for (size_t i = 0; i < value.size(); ++i)
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{
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if (!first)
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{
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os << ',' << CRLF;
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}
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first = false;
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indent();
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write(value[i]);
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}
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indent_level -= TAB_SIZE;
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os << CRLF;
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indent();
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os << "]";
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}
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}
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void write(const std::vector<float> &value)
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{
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// simple types: all on same line.
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os << "[ ";
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if (value.size() >= 1)
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{
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write(value[0]);
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}
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for (size_t i = 1; i < value.size(); ++i)
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{
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os << ",";
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write(value[i]);
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}
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os << "]";
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}
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template <
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class Category,
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class T,
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class Distance = std::ptrdiff_t,
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class Pointer = T *,
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class Reference = T &>
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void write(std::iterator<Category, T, Distance, Pointer, Reference> &it)
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{
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start_array();
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bool first = true;
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for (Reference ref : it)
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{
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if (!first)
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{
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os << ", ";
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os << CRLF;
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}
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indent();
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os << ref;
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}
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end_array();
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}
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void write_json_member(const char *name, const char *json_text)
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{
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write(name);
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os << ": ";
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os << json_text;
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}
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template <typename T>
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void write_member(const char *name, const T &value)
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{
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write(name);
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os << ": ";
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write(value);
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}
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void start_object();
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void end_object();
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void start_array();
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void end_array();
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/*
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void write(const json_writable *obj)
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{
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if (obj == nullptr)
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{
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os << "null";
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} else {
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start_object();
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obj->write(*this);
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end_object();
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}
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}
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void write(const json_writable &obj)
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{
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start_object();
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obj.write(*this);
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end_object();
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}
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*/
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private:
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template <typename T>
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json_map::storage_type<T> &get_object_map()
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{
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// static_assert(HasJsonPropertyMap<T>::value,"Type does not have a Json propery map name jmap.");
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// Type T must have public static propery jmap.
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return T::jmap;
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}
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|
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public:
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void write(const JsonSerializable *pWritable)
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{
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pWritable->write_json(*this);
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}
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void write(const JsonSerializable &writable)
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{
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writable.write_json(*this);
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}
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void writeRawWritable(const JsonSerializable &writable)
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|
{
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writable.write_json(*this);
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}
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void write(const JsonMemberWritable *pWritable)
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{
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start_object();
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pWritable->write_members(*this);
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end_object();
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}
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template <typename T>
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void write(const std::shared_ptr<T> &obj)
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{
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write(obj.get());
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}
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template <typename T>
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|
void write(const std::weak_ptr<T> &obj)
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{
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auto p = obj.lock();
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write(p.get());
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|
}
|
|
template <typename T>
|
|
void write(const std::unique_ptr<T> &obj)
|
|
{
|
|
write(obj.get());
|
|
}
|
|
|
|
template <typename T>
|
|
void write(const T *obj)
|
|
{
|
|
static_assert(HasJsonPropertyMap<T>::value, "Json serialization type not supported. (Json object classes must have a Json property map named jmap).");
|
|
if (obj == nullptr)
|
|
{
|
|
write_raw("null");
|
|
}
|
|
else
|
|
{
|
|
write(*obj);
|
|
}
|
|
}
|
|
|
|
template<typename T>
|
|
requires IsJsonSerializable<T>
|
|
void write(T*obj)
|
|
{
|
|
writeRawWritable(*obj);
|
|
}
|
|
|
|
|
|
template <typename T>
|
|
void write(T *obj)
|
|
{
|
|
static_assert(HasJsonPropertyMap<T>::value, "Json serialization type not supported. (Json object classes must have a Json property map named jmap).");
|
|
if (obj == nullptr)
|
|
{
|
|
write_raw("null");
|
|
}
|
|
else
|
|
{
|
|
write(*obj);
|
|
}
|
|
}
|
|
|
|
template<typename T>
|
|
requires IsJsonSerializable<T>
|
|
void write(T&obj)
|
|
{
|
|
writeRawWritable(obj);
|
|
}
|
|
|
|
template<typename T>
|
|
requires IsJsonSerializable<T>
|
|
void write(const T&obj)
|
|
{
|
|
writeRawWritable(obj);
|
|
}
|
|
|
|
template <typename T>
|
|
void write(const T &obj)
|
|
{
|
|
static_assert(HasJsonPropertyMap<T>::value, "Json serialization type not supported. (Json object classes must have a Json property map named jmap).");
|
|
|
|
auto &map = get_object_map<T>();
|
|
start_object();
|
|
|
|
map.write_members(this, &obj);
|
|
|
|
end_object();
|
|
}
|
|
template <typename U>
|
|
void write(const std::map<std::string, U> &map)
|
|
{
|
|
start_object();
|
|
|
|
bool firstTime = true;
|
|
for (const auto &v : map)
|
|
{
|
|
if (!firstTime)
|
|
{
|
|
write_raw(",");
|
|
write_raw(CRLF);
|
|
}
|
|
indent();
|
|
firstTime = false;
|
|
write_member(v.first.c_str(), v.second);
|
|
}
|
|
end_object();
|
|
}
|
|
};
|
|
|
|
class json_reader
|
|
{
|
|
private:
|
|
std::istream &is_;
|
|
|
|
const uint16_t UTF16_SURROGATE_1_BASE = 0xD800U;
|
|
const uint16_t UTF16_SURROGATE_2_BASE = 0xDC00U;
|
|
const uint16_t UTF16_SURROGATE_MASK = 0x3FFU;
|
|
bool allowNaN_ = true;
|
|
|
|
public:
|
|
json_reader(std::istream &input, bool allowNaN = true)
|
|
: is_(input)
|
|
{
|
|
this->allowNaN_ = allowNaN;
|
|
}
|
|
|
|
bool allowNaN() const { return allowNaN_; }
|
|
void allowNaN(bool allow) { allowNaN_ = allow; }
|
|
|
|
private:
|
|
void throw_format_error(const char *error);
|
|
|
|
void throw_format_error()
|
|
{
|
|
throw_format_error("Invalid file format");
|
|
}
|
|
|
|
inline bool is_whitespace(char c)
|
|
{
|
|
switch (c)
|
|
{
|
|
case 0x20:
|
|
case 0x0A:
|
|
case 0x0D:
|
|
case 0x09:
|
|
return true;
|
|
default:
|
|
return false;
|
|
}
|
|
}
|
|
char get()
|
|
{
|
|
int ic = is_.get();
|
|
if (ic == -1)
|
|
throw_format_error("Unexpected end of file");
|
|
return (char)ic;
|
|
}
|
|
|
|
void skip_whitespace();
|
|
|
|
void read_object_start();
|
|
uint16_t read_hex();
|
|
uint16_t read_u_escape();
|
|
|
|
template <typename T>
|
|
json_map::storage_type<T> &get_object_map()
|
|
{
|
|
// Type T must have public static propery map.
|
|
return T::jmap;
|
|
}
|
|
|
|
public:
|
|
void start_object() { consume('{');}
|
|
void end_object() { consume('}');}
|
|
void consume(char expected);
|
|
void consumeToken(const char *expectedToken, const char *errorMessage);
|
|
int peek()
|
|
{
|
|
skip_whitespace();
|
|
return is_.peek();
|
|
}
|
|
template<typename U>
|
|
void read_member(const std::string&name,U *value)
|
|
{
|
|
std::string v;
|
|
read(&v);
|
|
if (v != name) throw std::logic_error("Expecting property '" + name + "'");
|
|
consume(':');
|
|
read(value);
|
|
|
|
}
|
|
public:
|
|
std::string read_string();
|
|
|
|
public:
|
|
bool is_complete();
|
|
|
|
template <typename T>
|
|
requires IsJsonSerializable<T>
|
|
void read(T*pObject)
|
|
{
|
|
dynamic_cast<JsonSerializable*>(pObject)->read_json(*this);
|
|
}
|
|
template <typename T>
|
|
void read(T *pObject)
|
|
{
|
|
char c;
|
|
consume('{');
|
|
|
|
auto &map = get_object_map<T>();
|
|
while (true)
|
|
{
|
|
c = peek();
|
|
if (c == '}')
|
|
{
|
|
c = get();
|
|
break;
|
|
}
|
|
std::string memberName = read_string();
|
|
|
|
consume(':');
|
|
skip_whitespace();
|
|
|
|
map.read_property(this, memberName.c_str(), pObject);
|
|
|
|
skip_whitespace();
|
|
if (is_.peek() == ',')
|
|
{
|
|
c = get();
|
|
}
|
|
}
|
|
}
|
|
template <typename T>
|
|
void read(T **pObject)
|
|
{
|
|
int c = peek();
|
|
if (c != '{')
|
|
{
|
|
if (c == 'n')
|
|
{
|
|
consumeToken("null", "Expecting '{' or 'null'.");
|
|
*pObject = nullptr;
|
|
return;
|
|
}
|
|
}
|
|
*pObject = new T();
|
|
read(*pObject);
|
|
}
|
|
|
|
template <typename U>
|
|
void read(std::map<std::string, U> *pMap)
|
|
{
|
|
char c;
|
|
consume('{');
|
|
|
|
while (true)
|
|
{
|
|
c = peek();
|
|
if (c == '}')
|
|
{
|
|
c = get();
|
|
break;
|
|
}
|
|
std::string key = read_string();
|
|
|
|
consume(':');
|
|
skip_whitespace();
|
|
|
|
U u;
|
|
this->read(&u);
|
|
(*pMap)[key] = std::move(u);
|
|
skip_whitespace();
|
|
|
|
if (peek() == ',')
|
|
{
|
|
c = get();
|
|
}
|
|
}
|
|
}
|
|
|
|
template <typename T>
|
|
void read(std::unique_ptr<T> *pUniquePtr)
|
|
{
|
|
std::unique_ptr<T> p = std::make_unique<T>();
|
|
|
|
read(p.get());
|
|
*pUniquePtr = std::move(p);
|
|
}
|
|
template <typename T>
|
|
void read(std::shared_ptr<T> *pUniquePtr)
|
|
{
|
|
std::shared_ptr<T> p = std::make_shared<T>();
|
|
|
|
read(p.get());
|
|
(*pUniquePtr) = std::move(p);
|
|
}
|
|
template <typename T>
|
|
void read(std::weak_ptr<T> *pUniquePtr)
|
|
{
|
|
throw std::domain_error("Can't read std::weak_ptr");
|
|
}
|
|
|
|
private:
|
|
void skip_string();
|
|
void skip_number();
|
|
void skip_array();
|
|
void skip_object();
|
|
std::string readToken();
|
|
bool read_boolean();
|
|
void skip_token();
|
|
public:
|
|
void read_null();
|
|
public:
|
|
void skip_property();
|
|
|
|
void read(std::string *value)
|
|
{
|
|
skip_whitespace();
|
|
*value = read_string();
|
|
}
|
|
|
|
void read(bool *value)
|
|
{
|
|
skip_whitespace();
|
|
*value = read_boolean();
|
|
}
|
|
void read(int *value)
|
|
{
|
|
skip_whitespace();
|
|
is_ >> *value;
|
|
if (is_.fail())
|
|
throw PiPedalException("Invalid format.");
|
|
}
|
|
void read(long *value)
|
|
{
|
|
is_ >> *value;
|
|
if (is_.fail())
|
|
throw PiPedalException("Invalid format.");
|
|
}
|
|
void read(long long *value)
|
|
{
|
|
skip_whitespace();
|
|
is_ >> *value;
|
|
if (is_.fail())
|
|
throw PiPedalException("Invalid format.");
|
|
}
|
|
void read(unsigned int *value)
|
|
{
|
|
is_ >> *value;
|
|
if (is_.fail())
|
|
throw PiPedalException("Invalid format.");
|
|
}
|
|
void read(unsigned long *value)
|
|
{
|
|
is_ >> *value;
|
|
if (is_.fail())
|
|
throw PiPedalException("Invalid format.");
|
|
}
|
|
void read(unsigned long long *value)
|
|
{
|
|
skip_whitespace();
|
|
is_ >> *value;
|
|
if (is_.fail())
|
|
throw PiPedalException("Invalid format.");
|
|
}
|
|
|
|
void read(float *value)
|
|
{
|
|
skip_whitespace();
|
|
if (allowNaN_)
|
|
{
|
|
if (peek() == 'N')
|
|
{
|
|
consumeToken("NaN", "Expecting a number.");
|
|
*value = std::nanf("");
|
|
return;
|
|
}
|
|
}
|
|
is_ >> *value;
|
|
if (is_.fail())
|
|
throw PiPedalException("Invalid format.");
|
|
}
|
|
void read(double *value)
|
|
{
|
|
skip_whitespace();
|
|
if (allowNaN_)
|
|
{
|
|
if (peek() == 'N')
|
|
{
|
|
consumeToken("NaN", "Expecting a number.");
|
|
|
|
*value = std::nan("");
|
|
return;
|
|
}
|
|
}
|
|
|
|
is_ >> *value;
|
|
if (is_.fail())
|
|
throw PiPedalException("Invalid format.");
|
|
}
|
|
template <typename T>
|
|
void read(std::vector<T> *value)
|
|
{
|
|
char c;
|
|
std::vector<T> result;
|
|
|
|
consume('[');
|
|
while (true)
|
|
{
|
|
if (peek() == ']')
|
|
{
|
|
c = get();
|
|
break;
|
|
}
|
|
T item;
|
|
read(&item);
|
|
result.push_back(std::move(item));
|
|
if (peek() == ',')
|
|
{
|
|
c = get();
|
|
}
|
|
}
|
|
*value = std::move(result);
|
|
}
|
|
};
|
|
|
|
template <typename T>
|
|
class HasJsonRead
|
|
{
|
|
|
|
template <typename TYPE, typename ARG>
|
|
static std::true_type test(decltype(json_reader(std::cin).read((ARG *)nullptr)) *v) { return std::true_type(); };
|
|
|
|
template <typename TYPE, typename ARG>
|
|
static std::false_type test(...);
|
|
|
|
public:
|
|
static constexpr bool value = decltype(test<json_reader, T>(nullptr))::value;
|
|
};
|
|
|
|
template <typename CLASS, typename MEMBER_TYPE>
|
|
void json_member_reference<CLASS, MEMBER_TYPE>::read_value(json_reader &reader, CLASS *self)
|
|
{
|
|
static_assert(HasJsonRead<MEMBER_TYPE>::value, "Type not supported for Json serialization.");
|
|
MEMBER_TYPE *ref = &((*self).*member_pointer);
|
|
reader.read(ref);
|
|
}
|
|
template <typename CLASS, typename MEMBER_TYPE>
|
|
void json_member_reference<CLASS, MEMBER_TYPE>::write_value(json_writer &writer, const CLASS *self)
|
|
{
|
|
const MEMBER_TYPE &ref = (*self).*member_pointer;
|
|
writer.write_member(this->name(), ref);
|
|
}
|
|
|
|
template <typename CLASS, typename MEMBER_TYPE>
|
|
void json_enum_member_reference<CLASS, MEMBER_TYPE>::read_value(json_reader &reader, CLASS *self)
|
|
{
|
|
MEMBER_TYPE *ref = &((*self).*member_pointer);
|
|
std::string val = reader.read_string();
|
|
*ref = converter_->fromString(val);
|
|
}
|
|
|
|
template <typename CLASS, typename MEMBER_TYPE>
|
|
void json_enum_member_reference<CLASS, MEMBER_TYPE>::write_value(json_writer &writer, const CLASS *self)
|
|
{
|
|
const MEMBER_TYPE &ref = (*self).*member_pointer;
|
|
std::string val = converter_->toString(ref);
|
|
writer.write_member(this->name(), val);
|
|
}
|
|
|
|
template <typename CLASS>
|
|
void json_map_impl<CLASS>::read_property(json_reader *reader, const char *memberName, CLASS *pObject)
|
|
{
|
|
for (json_member_reference_base<CLASS> *member : members_)
|
|
{
|
|
if (strcmp(member->name(), memberName) == 0)
|
|
{
|
|
member->read_value(*reader, pObject);
|
|
return;
|
|
}
|
|
}
|
|
reader->skip_property();
|
|
}
|
|
|
|
template <typename CLASS, typename MEMBER_TYPE>
|
|
void json_conditional_member_reference<CLASS, MEMBER_TYPE>::read_value(json_reader &reader, CLASS *self)
|
|
{
|
|
static_assert(HasJsonRead<MEMBER_TYPE>::value, "Type not supported for Json serialization.");
|
|
MEMBER_TYPE *ref = &((*self).*member_pointer);
|
|
reader.read(ref);
|
|
}
|
|
|
|
template <typename CLASS, typename MEMBER_TYPE>
|
|
bool json_conditional_member_reference<CLASS, MEMBER_TYPE>::canWrite(const CLASS *self)
|
|
{
|
|
const MEMBER_TYPE &ref = (*self).*member_pointer;
|
|
return this->condition_(self, ref);
|
|
}
|
|
|
|
template <typename CLASS, typename MEMBER_TYPE>
|
|
void json_conditional_member_reference<CLASS, MEMBER_TYPE>::write_value(json_writer &writer, const CLASS *self)
|
|
{
|
|
const MEMBER_TYPE &ref = (*self).*member_pointer;
|
|
writer.write_member(this->name(), ref);
|
|
}
|
|
|
|
template <typename CLASS>
|
|
void json_map_impl<CLASS>::write_members(json_writer *writer, const CLASS *pObject)
|
|
{
|
|
bool first = true;
|
|
for (json_member_reference_base<CLASS> *member : members_)
|
|
{
|
|
if (member->canWrite(pObject))
|
|
{
|
|
if (!first)
|
|
{
|
|
writer->output_stream() << ',';
|
|
writer->output_stream() << writer->CRLF;
|
|
}
|
|
first = false;
|
|
writer->indent();
|
|
member->write_value(*writer, pObject);
|
|
}
|
|
}
|
|
}
|
|
|
|
} // namespace pipedal
|