flatbuffers-schema-parser/classes.erb at master · basdl/flatbuffers-schema-parser · GitHub

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namespace <%= namespace[:name] %>;

class ISerializable
{
public:
    virtual bool hasChanged() = 0;
    virtual bool hasChanged(const std::string& field) = 0;
    virtual boost::any getField(const std::string& field) = 0;
    virtual void setField(const std::string& field, boost::any value) = 0;
    virtual void serialize(flatbuffers::FlatbufferBuilder& fbb) = 0;
};

<% tables.each do |clazz| %>
    class <%= clazz[:fullname].gsub(".","::") %> {
    public:
        enum class Fields {
            <%= clazz[:fields].collect{|i| i[:name].to_s.upcase}.join(",") %>
        };

        static const std::vector<std::string> FieldNames{<%= clazz[:fields].collect{|i| "\"#{i[:name].to_s}\""}.join(",") %>};

        void serialize(flatbuffers::FlatbufferBuilder& fbb)
        {
            <%= clazz[:name] %>Builder builder;
            <% clazz[:fields].each_with_index do |field,i| %>
                if(hasChanged(<%= i %>))
                {
                    builder.add_<%= field[:name] %>(<%= field[:name] %>());
                }
            <% end %>
            fbb.Finish(builder.Finish());
        }

        <% clazz[:fields].each_with_index do |field,i| %>
            <% typeName = (field[:dtype] == :array) ? "std::vector<#{field[:type][:array]}>" : field[:type] %>
            <%= typeName %> <%= field[:name] %>()
            {
                return <%= field[:name] %>_;
            }

            void <%= field[:name] %>(const <%= typeName %>& value)
            {
                <%= field[:name] %>_ = value;
                changed_[<%=i%>] = true;
            }

            <% if field[:dtype] == :array %>
            <%= field[:type][:array] %> <%= field[:name] %>(size_t index)
            {
                return <%= field[:name] %>_[index];
            }

            void <%= field[:name] %>(size_t index, const <%= field[:type][:array] %>& value)
            {
                <%= field[:name] %>_[index] = value;
                changed_[<%=i%>] = true;
            }
            <% end %>
        <% end %>

        void hasChanged(unsigned int field)
        {
            return changed_[field];
        }

        void hasChanged()
        {
            return changed_.any();
        }

        void clearChanges()
        {
            changed_.clear();
        }

        const std::vector<std::string>& fields() const
        {
            return std::ref(FieldNames);
        }

        boost::any getField(const std::string& field)
        {
            <% clazz[:fields].each_with_index do |field,i| %>
                if(field == "<%=field[:name]%>")
                    return <%=field[:name]%>_;
            <% end %>
        }

        boost::any getField(unsigned int field)
        {
            <% clazz[:fields].each_with_index do |field,i| %>
                if(field == i)
                    return <%= field[:name] %>_;
            <% end %>
        }

        void setField(const std::string& field, boost::any value)
        {
            <% clazz[:fields].each_with_index do |field,i| %>
                if(field == "<%=field[:name]%>")
                    <%=field[:name]%>_ = value;
            <% end %>
        }

        void iterateChanges(const std::function<void(const std::string& field, boost::any& value)>& handler)
        {
            for(unsigned int i = 0; i < bitset_.size(); ++i)
            {
                if(changed_[i])
                {
                    handler("TODO", getField(i));
                }
            }
        }

    private:
        std::bitset<<%= clazz[:fields].count %>> changed_;
        <% clazz[:fields].each_with_index do |field,i| %>
            <% if field[:dtype] == :array %>
                std::vector<<%= field[:type][:array] %>> <%= field[:name] %>_;
            <% else %>
                <%= field[:type] %> <%= field[:name] %>_;
            <% end %>
        <% end %>
    }
<% end %>

Structs:
<% structs.each do |clazz| %>
    <%= clazz[:name] %>
<% end %>