本文整理汇总了C#中ParseContext.Advance方法的典型用法代码示例。如果您正苦于以下问题：C# ParseContext.Advance方法的具体用法？C# ParseContext.Advance怎么用？C# ParseContext.Advance使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类ParseContext的用法示例。
在下文中一共展示了ParseContext.Advance方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C#代码示例。
示例1: ParseDateTime
protected bool ParseDateTime(string s, DateTimePart part)
{
ParseContext context = new ParseContext(s);
bool bDatePart = ( part & DateTimePart.Date ) != 0;
bool bTimePart = ( part & DateTimePart.Time ) != 0;
int year = 0, month = 0, day = 0;
int hour = 0, minute = 0;
double second = 0;
eTZ = ETZ.Missing;
offsetTZ = 0;
if ( bDatePart )
{
// parse date
bool bNegative = context.CheckAndAdvance( '-' );
if ( (part & DateTimePart.Year ) != 0 )
{
int digits = 0;
int temp = 0;
while ( context.ReadDigitAndAdvance( ref temp, 1, 9 ) )
{
year = year * 10 + temp;
digits += 1;
temp = 0;
if (digits >= 8) // overflow
return false;
}
if ( digits < 4 ) // invalid.
return false;
if ( digits > 4 && year < 10000 )
return false;
if (bNegative)
year = -year;
}
if ( (part & ( DateTimePart.Month | DateTimePart.Day )) != 0 )
{
if ( !context.CheckAndAdvance( '-' ) ) return false;
if ( ( part & DateTimePart.Month ) != 0 )
{
if ( !context.ReadDigitAndAdvance( ref month, 10, 1 ) ) return false;
if ( !context.ReadDigitAndAdvance( ref month, 1, month < 10 ? 9 : 2 ) ) return false;
if ( month == 0 ) return false;
}
if ( ( part & DateTimePart.Day ) != 0 )
{
if ( !context.CheckAndAdvance( '-') ) return false;
int maxFirstDigit = month != 2 ? 3 : 2;
// complicate things by making them complicated.
if ( !context.ReadDigitAndAdvance( ref day, 10, maxFirstDigit ) ) return false;
if ( !context.ReadDigitAndAdvance( ref day, 1, 9 ) ) return false;
if ( day == 0 || day > 31 ) return false;
if ( ( part & DateTimePart.Month ) != 0 )
{
bool b1 = month <= 7;
bool b2 = ( month & 1 ) == 0;
// month 1, 3, 5, 7, 8, 10, 12
if ( b1 == b2 && day > 30 )
return false;
// february.
if ( month == 2 && day > 29 )
return false;
// leap years.
if ( month == 2 && ( part & DateTimePart.Year ) != 0 &&
( year % 4 != 0 || year % 100 == 0 ) && year % 400 != 0 &&
day > 28 )
return false;
}
}
}
if ( bTimePart )
{
// a 'T' must follow
if ( !context.CheckAndAdvance( 'T') ) return false;
}
}
if ( bTimePart )
{
// check format here
// hour from 0 to 2
if ( !context.ReadDigitAndAdvance( ref hour, 10, 2 ) ) return false;
if ( !context.ReadDigitAndAdvance( ref hour, 1, hour < 20 ? 9 : 4 ) ) return false;
if ( !context.CheckAndAdvance( ':' ) ) return false;
int maxFirstDigit = hour == 24 ? 0 : 5;
int maxSecondDigit = hour == 24 ? 0 : 9;
//.........这里部分代码省略.........