ConditionalCommand.h

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// Copyright Epic Games, Inc. All Rights Reserved.
 
#pragma once
 
#include "dnacalib/Command.h"
 
namespace dnac {
 
class DNACalibDNAReader;
 
template<class TCommand, class TCondition>
class ConditionalCommand : public Command {
    private:
        using CommandType = TCommand;
        using ConditionType = TCondition;
 
    public:
        ConditionalCommand() :
            command{nullptr},
            condition{} {
        }
 
        ConditionalCommand(CommandType* command_, ConditionType condition_) :
            command{command_},
            condition{condition_} {
        }
 
        ~ConditionalCommand() = default;
 
        ConditionalCommand(const ConditionalCommand&) = delete;
        ConditionalCommand& operator=(const ConditionalCommand&) = delete;
 
        ConditionalCommand(ConditionalCommand&&) = default;
        ConditionalCommand& operator=(ConditionalCommand&&) = default;
 
        void setCommand(Command* command_) {
            command = command_;
        }
 
        void setCondition(ConditionType condition_) {
            condition = condition_;
        }
 
        void run(DNACalibDNAReader* output) override {
            if (command && condition(command, output)) {
                command->run(output);
            }
        }
 
    private:
        CommandType* command;
        ConditionType condition;
 
};
 
template<class TCommand, class TCondition>
ConditionalCommand<TCommand, TCondition> makeConditional(TCommand* command, TCondition condition) {
    return ConditionalCommand<TCommand, TCondition>{command, condition};
}
 
}  // namespace dnac