/// <summary>
/// Parses a multipolygon text.
/// </summary>
/// <param name="tokens">The list of tokens.</param>
/// <param name="is3D">bool value indicating whether multipolygon being parsed has z-coordinate.</param>
/// <param name="isMeasured">bool value indicating whether multipolygon being parsed has m-value.</param>
/// <returns>A multipolygon specified by tokens.</returns>
/// <remarks><![CDATA[<multipolygon text> ::= <empty set> | <left paren> <polygon text> {<comma> <polygon text>}* <right paren>]]></remarks>
private static MultiPolygon ParseMultiPolygonText(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 MultiPolygon());
}
WktReader.Expect(TokenType.LEFT_PARENTHESIS, tokens);
MultiPolygon result = new MultiPolygon(WktReader.ParsePolygons(tokens, is3D, isMeasured));
WktReader.Expect(TokenType.RIGHT_PARENTHESIS, tokens);
return(result);
}