FieldList.h

/*
╔══════════════════════════════════════════════════════════════════════════════╗
║                       SIMPLY POWERFUL TOOLKIT (SPTK)                         ║
╟──────────────────────────────────────────────────────────────────────────────╢
║  copyright            © 1999-2022 Alexey Parshin. All rights reserved.       ║
║  email                alexeyp@gmail.com                                      ║
╚══════════════════════════════════════════════════════════════════════════════╝
┌──────────────────────────────────────────────────────────────────────────────┐
│   This library is free software; you can redistribute it and/or modify it    │
│   under the terms of the GNU Library General Public License as published by  │
│   the Free Software Foundation; either version 2 of the License, or (at your │
│   option) any later version.                                                 │
│                                                                              │
│   This library is distributed in the hope that it will be useful, but        │
│   WITHOUT ANY WARRANTY; without even the implied warranty of                 │
│   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library   │
│   General Public License for more details.                                   │
│                                                                              │
│   You should have received a copy of the GNU Library General Public License  │
│   along with this library; if not, write to the Free Software Foundation,    │
│   Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.               │
│                                                                              │
│   Please report all bugs and problems to alexeyp@gmail.com.                  │
└──────────────────────────────────────────────────────────────────────────────┘
*/
 
#pragma once
 
#include <map>
#include <sptk5/CaseInsensitiveCompare.h>
#include <sptk5/Field.h>
#include <sptk5/xdoc/Node.h>
#include <vector>
 
namespace sptk {
 
class SP_EXPORT FieldList
{
public:
    using iterator = std::vector<SField>::iterator;
 
    using const_iterator = std::vector<SField>::const_iterator;
 
 
    explicit FieldList(bool indexed);
 
    FieldList(const FieldList& other) = delete;
 
    FieldList(FieldList&& other) noexcept = default;
 
    FieldList& operator=(const FieldList& other) = delete;
 
    FieldList& operator=(FieldList&& other) noexcept = default;
 
    void clear();
 
    size_t size() const
    {
        return m_list.size();
    }
 
    iterator begin()
    {
        return m_list.begin();
    }
 
    const_iterator begin() const
    {
        return m_list.begin();
    }
 
    iterator end()
    {
        return m_list.end();
    }
 
    const_iterator end() const
    {
        return m_list.end();
    }
 
    Field& push_back(const String& fname, bool checkDuplicates);
 
    Field& push_back(const SField& fld);
 
    SField findField(const String& fname) const;
 
    SField fieldByName(const String& fname) const
    {
        auto field = findField(fname);
        if (!field)
        {
            throw Exception("Field name '" + String(fname) + "' not found");
        }
        return field;
    }
 
    Field& operator[](int index)
    {
        return *m_list[index];
    }
 
    const Field& operator[](int index) const
    {
        return *m_list[index];
    }
 
    Field& operator[](const String& fname)
    {
        return *fieldByName(fname);
    }
 
    const Field& operator[](const String& fname) const
    {
        return *fieldByName(fname.c_str());
    }
 
    void exportTo(const xdoc::SNode& node, bool compactMode, bool nullLargeData = false) const;
 
private:
    using Vector = std::vector<SField>;
 
    using Map = std::map<String, SField, CaseInsensitiveCompare>;
 
    Vector m_list;                
    std::shared_ptr<Map> m_index; 
 
    void assign(const FieldList& other);
};
 
} // namespace sptk