command.h

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#pragma once
 
#include <span>
 
#include "BashSpark/shell/shell_session.h"
 
namespace bs {
    class shell;
 
    class command {
        friend class shell;
 
    public:
        explicit command(std::string sName)
            : m_sName(std::move(sName)) {
        }
 
    public:
        virtual ~command() = default;
 
    public:
        [[nodiscard]] virtual shell_status run(
            const std::span<const std::string> &vArgs,
            shell_session &oSession
        ) const = 0;
 
    public:
        [[nodiscard]] std::string get_name() const {
            return this->m_sName;
        }
 
        [[nodiscard]] const std::string &get_name_ref() const noexcept {
            return this->m_sName;
        }
 
    private:
        std::string m_sName;
    };
 
    class command_echo : public command {
    public:
        command_echo()
            : command("echo") {
        }
 
    public:
        [[nodiscard]] shell_status run(
            const std::span<const std::string> &vArgs,
            shell_session &oSession
        ) const override;
    };
 
    class command_eval : public command {
    public:
        explicit command_eval()
            : command("eval") {
        }
 
    public:
        [[nodiscard]] shell_status run(
            const std::span<const std::string> &vArgs,
            shell_session &oSession
        ) const override;
 
    protected:
        virtual void msg_error_max_depth_reached(std::ostream &oStdErr) const;
    };
}