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/**
* Copyright (C) 2013 10gen Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License, version 3,
* as published by the Free Software Foundation.
*
* 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#pragma once
#include "mongo/db/geo/shapes.h"
#include "mongo/db/jsobj.h"
namespace mongo {
// This class parses geographic data.
// It parses a subset of GeoJSON and creates S2 shapes from it.
// See http://geojson.org/geojson-spec.html for the spec.
//
// This class also parses the ad-hoc geo formats that MongoDB introduced.
//
// parse* methods may do some more validation than the is* methods; they return false if they
// encounter invalid geometry and true if the geometry is parsed successfully.
class GeoParser {
public:
static bool isPoint(const BSONObj &obj);
static bool parsePoint(const BSONObj &obj, PointWithCRS *out);
static bool isLine(const BSONObj &obj);
static bool parseLine(const BSONObj &obj, LineWithCRS *out);
static bool isBox(const BSONObj &obj);
static bool parseBox(const BSONObj &obj, BoxWithCRS *out);
static bool isPolygon(const BSONObj &obj);
static bool parsePolygon(const BSONObj &obj, PolygonWithCRS *out);
// AKA $center or $centerSphere
static bool isCap(const BSONObj &obj);
static bool parseCap(const BSONObj &obj, CapWithCRS *out);
static bool isMultiPoint(const BSONObj &obj);
static bool parseMultiPoint(const BSONObj &obj, MultiPointWithCRS *out);
static bool isMultiLine(const BSONObj &obj);
static bool parseMultiLine(const BSONObj &obj, MultiLineWithCRS *out);
static bool isMultiPolygon(const BSONObj &obj);
static bool parseMultiPolygon(const BSONObj &obj, MultiPolygonWithCRS *out);
static bool isGeometryCollection(const BSONObj &obj);
static bool parseGeometryCollection(const BSONObj &obj, GeometryCollection *out);
// Return true if the CRS field is 1. missing, or 2. is well-formed and
// has a datum we accept. Otherwise, return false.
// NOTE(hk): If this is ever used anywhere but internally, consider
// returning states: missing, invalid, unknown, ok, etc. -- whatever
// needed.
static bool crsIsOK(const BSONObj& obj);
};
} // namespace mongo
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