155 lines
4 KiB
C++
155 lines
4 KiB
C++
#ifndef RFL_YAML_WRITER_HPP_
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#define RFL_YAML_WRITER_HPP_
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#include <exception>
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#include <map>
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#include <sstream>
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#include <stdexcept>
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#include <string>
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#include <string_view>
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#include <type_traits>
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#include <vector>
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#include <yaml-cpp/yaml.h>
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#include "../Ref.hpp"
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#include "../Result.hpp"
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#include "../always_false.hpp"
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namespace rfl {
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namespace yaml {
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class Writer {
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public:
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struct YAMLArray {};
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struct YAMLObject {};
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struct YAMLVar {};
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using OutputArrayType = YAMLArray;
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using OutputObjectType = YAMLObject;
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using OutputVarType = YAMLVar;
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Writer(const Ref<YAML::Emitter>& _out) : out_(_out) {}
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~Writer() = default;
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OutputArrayType array_as_root(const size_t _size) const noexcept {
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return new_array();
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}
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OutputObjectType object_as_root(const size_t _size) const noexcept {
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return new_object();
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}
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OutputVarType null_as_root() const noexcept {
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return insert_value(YAML::Null);
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}
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template <class T>
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OutputVarType value_as_root(const T& _var) const noexcept {
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return insert_value(_var);
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}
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OutputArrayType add_array_to_array(
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const size_t _size,
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OutputArrayType* _parent) const noexcept {
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return new_array();
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}
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OutputArrayType add_array_to_object(
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const std::string_view& _name,
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const size_t _size,
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OutputObjectType* _parent) const noexcept {
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return new_array(_name);
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}
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OutputObjectType add_object_to_array(
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const size_t _size,
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OutputArrayType* _parent) const noexcept {
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return new_object();
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}
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OutputObjectType add_object_to_object(
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const std::string_view& _name,
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const size_t _size,
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OutputObjectType* _parent) const noexcept {
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return new_object(_name);
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}
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template <class T>
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OutputVarType add_value_to_array(const T& _var, OutputArrayType* _parent)
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const noexcept {
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return insert_value(_var);
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}
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template <class T>
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OutputVarType add_value_to_object(
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const std::string_view& _name,
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const T& _var,
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OutputObjectType* _parent) const noexcept {
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return insert_value(_name, _var);
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}
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OutputVarType add_null_to_array(OutputArrayType* _parent) const noexcept {
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return insert_value(YAML::Null);
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}
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OutputVarType add_null_to_object(
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const std::string_view& _name,
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OutputObjectType* _parent) const noexcept {
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return insert_value(_name, YAML::Null);
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}
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void end_array(OutputArrayType* _arr) const noexcept {
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(*out_) << YAML::EndSeq;
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}
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void end_object(OutputObjectType* _obj) const noexcept {
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(*out_) << YAML::EndMap;
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}
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private:
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template <class T>
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OutputVarType insert_value(const std::string_view& _name,
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const T& _var) const noexcept {
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(*out_) << YAML::Key << _name.data() << YAML::Value << _var;
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return OutputVarType {};
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}
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template <class T>
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OutputVarType insert_value(const T& _var) const noexcept {
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(*out_) << _var;
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return OutputVarType {};
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}
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OutputArrayType new_array(const std::string_view& _name) const noexcept {
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(*out_) << YAML::Key << _name.data() << YAML::Value << YAML::BeginSeq;
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return OutputArrayType {};
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}
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OutputArrayType new_array() const noexcept {
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(*out_) << YAML::BeginSeq;
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return OutputArrayType {};
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}
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OutputObjectType new_object(
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const std::string_view& _name) const noexcept {
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(*out_) << YAML::Key << _name.data() << YAML::Value << YAML::BeginMap;
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return OutputObjectType {};
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}
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OutputObjectType new_object() const noexcept {
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(*out_) << YAML::BeginMap;
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return OutputObjectType {};
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}
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public:
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const Ref<YAML::Emitter> out_;
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};
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} // namespace yaml
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} // namespace rfl
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#endif // JSON_PARSER_HPP_
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