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#ifndef SQL_GIS_WKB_VISITOR_H_INCLUDED
#define SQL_GIS_WKB_VISITOR_H_INCLUDED
// Copyright (c) 2018, 2025, Oracle and/or its affiliates.
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License, version 2.0,
// as published by the Free Software Foundation.
//
// This program is designed to work with certain software (including
// but not limited to OpenSSL) that is licensed under separate terms,
// as designated in a particular file or component or in included license
// documentation. The authors of MySQL hereby grant you an additional
// permission to link the program and your derivative works with the
// separately licensed software that they have either included with
// the program or referenced in the documentation.
//
// 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, version 2.0, for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
#include "sql/dd/types/spatial_reference_system.h" // dd::Spatial_reference_system
#include "sql/gis/geometry_visitor.h"
namespace gis {
/// A visitor that serializes the geometry to little-endian WKB and appends it
/// to a string.
class Wkb_visitor : public Nop_visitor {
private:
/// Spatial reference system of the geometry.
const dd::Spatial_reference_system *m_srs;
/// The WKB string.
const char *m_wkb;
/// Size of the buffer allocated for the WKB string.
const size_t m_wkb_size;
/// The position of the next character to be added to the string.
char *m_wkb_current_position;
public:
/// Construct a new WKB visitor.
///
/// @param[in] srs The spatial reference system of the geometry.
/// @param[in] wkb The string to write the WKB to.
/// @param[in] wkb_size The length of the WKB string buffer.
Wkb_visitor(const dd::Spatial_reference_system *srs, char *wkb,
size_t wkb_size)
: m_srs(srs),
m_wkb(wkb),
m_wkb_size(wkb_size),
m_wkb_current_position(wkb) {}
using Nop_visitor::visit_enter;
bool visit_enter(Geometry *) override {
/* purecov: begin deadcode */
assert(false);
return true;
/* purecov: end */
}
bool visit_enter(Linestring *ls) override;
bool visit_enter(Polygon *py) override;
bool visit_enter(Geometrycollection *gc) override;
using Nop_visitor::visit;
bool visit(Point *pt) override;
};
} // namespace gis
#endif // SQL_GIS_WKB_VISITOR_H_INCLUDED
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