public LexerToken(LexerTokenKindEnum kind, BoostVariant value) : this()
{
Kind = kind;
if (value != null && !value.IsEmpty)
{
Value.SetValue(value);
}
}
public LexerToken(LexerTokenKindEnum kind) : this(kind, BoostVariant.Empty)
{
}
private void DetermineWhen(ref LexerToken tok, ref DateSpecifier specifier)
{
Date today = TimesCommon.Current.CurrentDate;
specifier = specifier ?? new DateSpecifier();
switch (tok.Kind)
{
case LexerTokenKindEnum.TOK_DATE:
specifier = tok.Value.GetValue <DateSpecifier>();
break;
case LexerTokenKindEnum.TOK_INT:
{
int amount = tok.Value.GetValue <int>();
int adjust = 0;
tok = Lexer.PeekToken();
LexerTokenKindEnum kind = tok.Kind;
switch (kind)
{
case LexerTokenKindEnum.TOK_YEAR:
case LexerTokenKindEnum.TOK_YEARS:
case LexerTokenKindEnum.TOK_QUARTER:
case LexerTokenKindEnum.TOK_QUARTERS:
case LexerTokenKindEnum.TOK_MONTH:
case LexerTokenKindEnum.TOK_MONTHS:
case LexerTokenKindEnum.TOK_WEEK:
case LexerTokenKindEnum.TOK_WEEKS:
case LexerTokenKindEnum.TOK_DAY:
case LexerTokenKindEnum.TOK_DAYS:
Lexer.NextToken();
tok = Lexer.NextToken();
switch (tok.Kind)
{
case LexerTokenKindEnum.TOK_AGO:
adjust = -1;
break;
case LexerTokenKindEnum.TOK_HENCE:
adjust = 1;
break;
default:
tok.Unexpected();
break;
}
break;
default:
break;
}
Date when = today;
switch (kind)
{
case LexerTokenKindEnum.TOK_YEAR:
case LexerTokenKindEnum.TOK_YEARS:
when = when.AddYears(amount * adjust);
break;
case LexerTokenKindEnum.TOK_QUARTER:
case LexerTokenKindEnum.TOK_QUARTERS:
when = when.AddMonths(amount * 3 * adjust);
break;
case LexerTokenKindEnum.TOK_MONTH:
case LexerTokenKindEnum.TOK_MONTHS:
when = when.AddMonths(amount * adjust);
break;
case LexerTokenKindEnum.TOK_WEEK:
case LexerTokenKindEnum.TOK_WEEKS:
when = when.AddDays(amount * 7 * adjust);
break;
case LexerTokenKindEnum.TOK_DAY:
case LexerTokenKindEnum.TOK_DAYS:
when = when.AddDays(amount * adjust);
break;
default:
if (amount > 31)
{
specifier.Year = amount;
}
else
{
specifier.Day = amount;
}
break;
}
if (adjust != 0)
{
specifier = new DateSpecifier(when);
}
break;
}
case LexerTokenKindEnum.TOK_THIS:
case LexerTokenKindEnum.TOK_NEXT:
case LexerTokenKindEnum.TOK_LAST:
{
int adjust = 0;
if (tok.Kind == LexerTokenKindEnum.TOK_NEXT)
{
adjust = 1;
}
else if (tok.Kind == LexerTokenKindEnum.TOK_LAST)
{
adjust = -1;
}
tok = Lexer.NextToken();
switch (tok.Kind)
{
case LexerTokenKindEnum.TOK_A_MONTH:
{
Date temp = new Date(today.Year, tok.Value.GetValue <int>(), 1);
temp = temp.AddYears(adjust);
specifier = new DateSpecifier(temp.Year, (MonthEnum)temp.Month);
break;
}
case LexerTokenKindEnum.TOK_A_WDAY:
{
Date temp = DateDuration.FindNearest(today, SkipQuantumEnum.WEEKS);
while (temp.DayOfWeek != tok.Value.GetValue <DayOfWeek>())
{
temp = temp.AddDays(1);
}
temp = temp.AddDays(7 * adjust);
specifier = new DateSpecifier(temp);
break;
}
case LexerTokenKindEnum.TOK_YEAR:
{
Date temp = today;
temp = temp.AddYears(adjust);
specifier = new DateSpecifier(temp.Year);
break;
}
case LexerTokenKindEnum.TOK_QUARTER:
{
Date baseDate = DateDuration.FindNearest(today, SkipQuantumEnum.QUARTERS);
Date temp = default(Date);
if (adjust < 0)
{
temp = baseDate.AddMonths(3 * adjust);
}
else if (adjust == 0)
{
temp = baseDate.AddMonths(3);
}
else if (adjust > 0)
{
baseDate = baseDate.AddMonths(3 * adjust);
temp = baseDate.AddMonths(3 * adjust);
}
specifier = new DateSpecifier(adjust < 0 ? temp : baseDate);
break;
}
case LexerTokenKindEnum.TOK_WEEK:
{
Date baseDate = DateDuration.FindNearest(today, SkipQuantumEnum.WEEKS);
Date temp = default(Date);
if (adjust < 0)
{
temp = baseDate.AddDays(7 * adjust);
}
else if (adjust == 0)
{
temp = baseDate.AddDays(7);
}
else if (adjust > 0)
{
baseDate = baseDate.AddDays(7 * adjust);
temp = baseDate.AddDays(7 * adjust);
}
specifier = new DateSpecifier(adjust < 0 ? temp : baseDate);
break;
}
case LexerTokenKindEnum.TOK_DAY:
{
Date temp = today;
temp = temp.AddDays(adjust);
specifier = new DateSpecifier(temp);
break;
}
case LexerTokenKindEnum.TOK_MONTH:
default:
{
Date temp = today;
temp = temp.AddMonths(adjust);
specifier = new DateSpecifier(temp.Year, (MonthEnum)temp.Month);
break;
}
}
break;
}
case LexerTokenKindEnum.TOK_A_MONTH:
specifier.Month = tok.Value.GetValue <MonthEnum>();
tok = Lexer.PeekToken();
switch (tok.Kind)
{
case LexerTokenKindEnum.TOK_INT:
specifier.Year = tok.Value.GetValue <int>();
break;
case LexerTokenKindEnum.END_REACHED:
break;
default:
break;
}
break;
case LexerTokenKindEnum.TOK_A_WDAY:
specifier.WDay = tok.Value.GetValue <DayOfWeek>();
break;
case LexerTokenKindEnum.TOK_TODAY:
specifier = new DateSpecifier(today);
break;
case LexerTokenKindEnum.TOK_TOMORROW:
specifier = new DateSpecifier(today.AddDays(1));
break;
case LexerTokenKindEnum.TOK_YESTERDAY:
specifier = new DateSpecifier(today.AddDays(-1));
break;
default:
tok.Unexpected();
break;
}
}
