private int parseDeltaAmount(Tokenizer tokenizer) throws ParseException { expectKeyword(POSITIVE_DELTA, NEGATIVE_DELTA); boolean subtract = NEGATIVE_DELTA.equals(tokenizer.getToken()); tokenizer.nextToken(); expectNumber(); int amount = Integer.parseInt(tokenizer.getToken()); if (subtract) { amount *= -1; } return amount; }
private Calendar parseDate(Tokenizer tokenizer) throws ParseException { expectNumber(); int firstNumber = Integer.parseInt(tokenizer.getToken()); tokenizer.nextToken(); if (!GERMAN_DATE_SEPARATOR.equals(tokenizer.getToken()) && !ENGLISH_DATE_SEPARATOR.equals(tokenizer.getToken())) { return parseYMExpression(firstNumber); } expectKeyword(GERMAN_DATE_SEPARATOR, ENGLISH_DATE_SEPARATOR); if (GERMAN_DATE_SEPARATOR.equals(tokenizer.getToken())) { return parseGermanDate(firstNumber); } else { return parseEnglishDate(firstNumber); } }
private void applyDelta(Calendar fixPoint, int amount) throws ParseException { expectKeyword(join(seconds(), minutes(), hours(), days(), weeks(), months(), years())); if (in(seconds())) { fixPoint.add(Calendar.SECOND, amount); return; } if (in(minutes())) { fixPoint.add(Calendar.MINUTE, amount); return; } if (in(hours())) { fixPoint.add(Calendar.HOUR, amount); return; } if (in(days())) { fixPoint.add(Calendar.DAY_OF_MONTH, amount); return; } if (in(weeks())) { fixPoint.add(Calendar.WEEK_OF_YEAR, amount); return; } if (in(months())) { fixPoint.add(Calendar.MONTH, amount); return; } if (in(years())) { fixPoint.add(Calendar.YEAR, amount); } }
private Calendar parseFixPoint() throws ParseException { if (tokenizer.getType() == Tokenizer.NUMBER) { return parseDate(tokenizer); } if (tokenizer.getType() == Tokenizer.SPECIAL) { return now(); } if (tokenizer.getType() == Tokenizer.END_OF_INPUT) { return now(); } if (in(calendarWeek())) { tokenizer.nextToken(); expectNumber(); Calendar result = now(); result.set(Calendar.WEEK_OF_YEAR, Integer.parseInt(tokenizer.getToken())); forceConversion(result); tokenizer.nextToken(); return result; } expectKeyword(nowToken()); tokenizer.nextToken(); return now(); }
private void parseStartModifier() throws ParseException { tokenizer.nextToken(); expectKeyword(join(of(), day(), week(), month(), year())); if (in(of())) { tokenizer.nextToken(); expectKeyword(join(day(), week(), month(), year())); } if (in(day())) { startOfDay = true; } if (in(week())) { startOfWeek = true; } if (in(month())) { startOfMonth = true; } if (in(year())) { startOfYear = true; } }
private void parseEndModifier() throws ParseException { tokenizer.nextToken(); expectKeyword(join(of(), day(), week(), month(), year())); if (in(of())) { tokenizer.nextToken(); expectKeyword(join(day(), week(), month(), year())); } if (in(day())) { endOfDay = true; } if (in(week())) { endOfWeek = true; } if (in(month())) { endOfMonth = true; } if (in(year())) { endOfYear = true; } }