public static TzDbZoneContinuation Parse(Queue <Token> unProcessedTokens, String timeZoneName)
        {
            try
            {
                TimeSpan gmtOff = TimeSpanExpression.Parse(unProcessedTokens);
                string   rules  = unProcessedTokens.Dequeue().Value;
                TimeZoneAbbreviationFormat format =
                    TimeZoneAbbreviationFormatExpression.Parse(unProcessedTokens);
                // until is optional
                TzDbAbstractDateTime until;
                TzDbDateTimeExpression.TryParse(unProcessedTokens, out until);

                Token endLineToken = unProcessedTokens.Dequeue();
                // guard end of line token was present
                if (endLineToken.TokenType != TokenType.EndLine)
                {
                    string msg = String.Format(
                        "received unexpected token type:{0} when token type should have been {1}",
                        endLineToken.TokenType, TokenType.EndLine);
                    throw new Exception(msg);
                }

                return(new TzDbZoneContinuation(gmtOff, rules, format, until));
            }
            catch (Exception e)
            {
                throw new Exception("Error occured while parsing zone continuation expression", e);
            }
        }
示例#2
0
        public static bool TryParse(Queue <Token> unProcessedTokens, out TzDbZone?tzDbZone)
        {
            // the value of the first token of every link entry is Link
            const String linkRegex = "Zone";

            if (Regex.IsMatch(unProcessedTokens.Peek().Value, linkRegex))
            {
                try
                {
                    // dequeue Zone token and discard
                    unProcessedTokens.Dequeue();

                    string   ianaId = unProcessedTokens.Dequeue().Value;
                    TimeSpan gmtOff = TimeSpanExpression.Parse(unProcessedTokens);
                    string   rules  = unProcessedTokens.Dequeue().Value;
                    TimeZoneAbbreviationFormat format = TimeZoneAbbreviationFormatExpression.Parse(unProcessedTokens);
                    // until is optional
                    TzDbAbstractDateTime until;
                    TzDbDateTimeExpression.TryParse(unProcessedTokens, out until);

                    tzDbZone = new TzDbZone(gmtOff, rules, format, ianaId, until);

                    Token endLineToken = unProcessedTokens.Dequeue();
                    // guard end of line token was present
                    if (endLineToken.TokenType != TokenType.EndLine)
                    {
                        string msg = String.Format(
                            "received unexpected token type:{0} when token type should have been {1}",
                            endLineToken.TokenType, TokenType.EndLine);
                        throw new Exception(msg);
                    }

                    return(true);
                }
                catch (Exception e)
                {
                    throw new Exception("Error occured while parsing zone expression", e);
                }
            }

            tzDbZone = null;
            return(false);
        }