/// <summary>
/// Parses a point tagged text.
/// </summary>
/// <param name="tokens">The list of tokens.</param>
/// <param name="is3D">bool value indicating whether point being parsed has z-coordinate.</param>
/// <param name="isMeasured">bool value indicating whether point beeing parsed has m-value.</param>
/// <returns>A point specified by tokens</returns>
/// <remarks><![CDATA[<empty set> | <left paren> <point> <right paren> ]]></remarks>
private static Point ParsePointText(WktTokensBuffer tokens, bool is3D, bool isMeasured)
{
WktToken t = tokens.Peek(true);
if (t.Type == TokenType.STRING && t.Value.ToUpperInvariant() == "EMPTY")
{
tokens.GetToken(true);
return(new Point());
}
WktReader.Expect(TokenType.LEFT_PARENTHESIS, tokens);
Point result = new Point(WktReader.ParseCoordinate(tokens, is3D, isMeasured));
WktReader.Expect(TokenType.RIGHT_PARENTHESIS, tokens);
return(result);
}
/// <summary>
/// Parses a series of coordinate.
/// </summary>
/// <param name="tokens">The list of tokens.</param>
/// <param name="is3D">bool value indicating whether coordinate being parsed had z-coordinate.</param>
/// <param name="isMeasured">bool value indicating whether coordinate beeing parsed has m-value.</param>
/// <returns>A list of coordinates specified by tokens.</returns>
private static IEnumerable <Coordinate> ParseCoordinates(WktTokensBuffer tokens, bool is3D, bool isMeasured)
{
List <Coordinate> coordinates = new List <Coordinate>();
coordinates.Add(WktReader.ParseCoordinate(tokens, is3D, isMeasured));
WktToken t = tokens.Peek(true);
while (t.Type == TokenType.COMMA)
{
tokens.GetToken(true);
WktReader.Expect(TokenType.WHITESPACE, tokens);
coordinates.Add(WktReader.ParseCoordinate(tokens, is3D, isMeasured));
t = tokens.Peek(true);
}
return(coordinates);
}
