utils/formats/json/writer.hpp

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#ifndef GENESIS_UTILS_FORMATS_JSON_WRITER_H_
#define GENESIS_UTILS_FORMATS_JSON_WRITER_H_
 
/*
    Genesis - A toolkit for working with phylogenetic data.
    Copyright (C) 2014-2020 Lucas Czech
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.
 
    This program 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 General Public License for more details.
 
    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
    Contact:
    Lucas Czech <lucas.czech@h-its.org>
    Exelixis Lab, Heidelberg Institute for Theoretical Studies
    Schloss-Wolfsbrunnenweg 35, D-69118 Heidelberg, Germany
*/
 
#include "genesis/utils/io/output_target.hpp"
 
#include <iosfwd>
#include <string>
 
namespace genesis {
namespace utils {
 
// =================================================================================================
//     Forward declarations
// =================================================================================================
 
class JsonDocument;
 
// =================================================================================================
//     Json Writer
// =================================================================================================
 
class JsonWriter
{
public:
 
    // ---------------------------------------------------------------------
    //     Constructor and Rule of Five
    // ---------------------------------------------------------------------
 
    JsonWriter()  = default;
    ~JsonWriter() = default;
 
    JsonWriter( JsonWriter const& ) = default;
    JsonWriter( JsonWriter&& )      = default;
 
    JsonWriter& operator= ( JsonWriter const& ) = default;
    JsonWriter& operator= ( JsonWriter&& )      = default;
 
    // ---------------------------------------------------------------------
    //     Writing
    // ---------------------------------------------------------------------
 
public:
 
    void write( JsonDocument const& document, std::shared_ptr<utils::BaseOutputTarget> target ) const;
 
    std::string to_string ( JsonDocument const& document) const;
 
    // ---------------------------------------------------------------------
    //     Printing
    // ---------------------------------------------------------------------
 
private:
 
    void print_value  ( JsonDocument const& value, std::ostream& out) const;
 
    void print_array  ( JsonDocument const& value, std::ostream& out, int indent_level) const;
 
    void print_object ( JsonDocument const& value, std::ostream& out, int indent_level) const;
 
    // ---------------------------------------------------------------------
    //     Settings
    // ---------------------------------------------------------------------
 
public:
 
    size_t precision() const
    {
        return precision_;
    }
 
    JsonWriter& precision( size_t value )
    {
        precision_ = value;
        return *this;
    }
 
    size_t indent() const
    {
        return indent_;
    }
 
    JsonWriter& indent( size_t value )
    {
        indent_ = value;
        return *this;
    }
 
    // ---------------------------------------------------------------------
    //     Data Members
    // ---------------------------------------------------------------------
 
private:
 
    size_t precision_ = 6;
    size_t indent_    = 4;
 
};
 
} // namespace utils
} // namespace genesis
 
#endif // include guard