| static private IsSingleton ( String set ) : bool | ||
| set | String | |
| return | bool | |
internal RegexNode ReduceSet()
{
if (RegexCharClass.IsEmpty(this._str))
{
this._type = 0x16;
this._str = null;
}
else if (RegexCharClass.IsSingleton(this._str))
{
this._ch = RegexCharClass.SingletonChar(this._str);
this._str = null;
this._type += -2;
}
else if (RegexCharClass.IsSingletonInverse(this._str))
{
this._ch = RegexCharClass.SingletonChar(this._str);
this._str = null;
this._type += -1;
}
return(this);
}
/*
* ReduceSet:
*
* Simple optimization. If a set is a singleton, an inverse singleton,
* or empty, it's transformed accordingly.
*/
internal RegexNode ReduceSet()
{
// Extract empty-set, one and not-one case as special
if (RegexCharClass.IsEmpty(_str))
{
_type = Nothing;
_str = null;
}
else if (RegexCharClass.IsSingleton(_str))
{
_ch = RegexCharClass.SingletonChar(_str);
_str = null;
_type += (One - Set);
}
else if (RegexCharClass.IsSingletonInverse(_str))
{
_ch = RegexCharClass.SingletonChar(_str);
_str = null;
_type += (Notone - Set);
}
return(this);
}
/// <summary>
/// Simple optimization. If a set is a singleton, an inverse singleton,
/// or empty, it's transformed accordingly.
/// </summary>
private RegexNode ReduceSet()
{
// Extract empty-set, one and not-one case as special
if (RegexCharClass.IsEmpty(Str))
{
NType = Nothing;
Str = null;
}
else if (RegexCharClass.IsSingleton(Str))
{
Ch = RegexCharClass.SingletonChar(Str);
Str = null;
NType += (One - Set);
}
else if (RegexCharClass.IsSingletonInverse(Str))
{
Ch = RegexCharClass.SingletonChar(Str);
Str = null;
NType += (Notone - Set);
}
return(this);
}
protected override bool FindFirstChar()
{
if (0 != (_code.Anchors & (RegexFCD.Beginning | RegexFCD.Start | RegexFCD.EndZ | RegexFCD.End)))
{
if (!_code.RightToLeft)
{
if ((0 != (_code.Anchors & RegexFCD.Beginning) && runtextpos > runtextbeg) ||
(0 != (_code.Anchors & RegexFCD.Start) && runtextpos > runtextstart))
{
runtextpos = runtextend;
return(false);
}
if (0 != (_code.Anchors & RegexFCD.EndZ) && runtextpos < runtextend - 1)
{
runtextpos = runtextend - 1;
}
else if (0 != (_code.Anchors & RegexFCD.End) && runtextpos < runtextend)
{
runtextpos = runtextend;
}
}
else
{
if ((0 != (_code.Anchors & RegexFCD.End) && runtextpos < runtextend) ||
(0 != (_code.Anchors & RegexFCD.EndZ) && (runtextpos < runtextend - 1 ||
(runtextpos == runtextend - 1 && CharAt(runtextpos) != '\n'))) ||
(0 != (_code.Anchors & RegexFCD.Start) && runtextpos < runtextstart))
{
runtextpos = runtextbeg;
return(false);
}
if (0 != (_code.Anchors & RegexFCD.Beginning) && runtextpos > runtextbeg)
{
runtextpos = runtextbeg;
}
}
if (_code.BMPrefix != null)
{
return(_code.BMPrefix.IsMatch(runtext, runtextpos, runtextbeg, runtextend));
}
return(true); // found a valid start or end anchor
}
else if (_code.BMPrefix != null)
{
runtextpos = _code.BMPrefix.Scan(runtext, runtextpos, runtextbeg, runtextend);
if (runtextpos == -1)
{
runtextpos = (_code.RightToLeft ? runtextbeg : runtextend);
return(false);
}
return(true);
}
else if (_code.FCPrefix == null)
{
return(true);
}
_rightToLeft = _code.RightToLeft;
_caseInsensitive = _code.FCPrefix.GetValueOrDefault().CaseInsensitive;
string set = _code.FCPrefix.GetValueOrDefault().Prefix;
if (RegexCharClass.IsSingleton(set))
{
char ch = RegexCharClass.SingletonChar(set);
for (int i = Forwardchars(); i > 0; i--)
{
if (ch == Forwardcharnext())
{
Backwardnext();
return(true);
}
}
}
else
{
for (int i = Forwardchars(); i > 0; i--)
{
if (RegexCharClass.CharInClass(Forwardcharnext(), set))
{
Backwardnext();
return(true);
}
}
}
return(false);
}
protected override bool FindFirstChar()
{
int i;
String set;
if (0 != (_code._anchors & (RegexFCD.Beginning | RegexFCD.Start | RegexFCD.EndZ | RegexFCD.End)))
{
if (!_code._rightToLeft)
{
if ((0 != (_code._anchors & RegexFCD.Beginning) && _runtextpos > _runtextbeg) ||
(0 != (_code._anchors & RegexFCD.Start) && _runtextpos > _runtextstart))
{
_runtextpos = _runtextend;
return(false);
}
if (0 != (_code._anchors & RegexFCD.EndZ) && _runtextpos < _runtextend - 1)
{
_runtextpos = _runtextend - 1;
}
else if (0 != (_code._anchors & RegexFCD.End) && _runtextpos < _runtextend)
{
_runtextpos = _runtextend;
}
}
else
{
if ((0 != (_code._anchors & RegexFCD.End) && _runtextpos < _runtextend) ||
(0 != (_code._anchors & RegexFCD.EndZ) && (_runtextpos < _runtextend - 1 ||
(_runtextpos == _runtextend - 1 && CharAt(_runtextpos) != '\n'))) ||
(0 != (_code._anchors & RegexFCD.Start) && _runtextpos < _runtextstart))
{
_runtextpos = _runtextbeg;
return(false);
}
if (0 != (_code._anchors & RegexFCD.Beginning) && _runtextpos > _runtextbeg)
{
_runtextpos = _runtextbeg;
}
}
if (_code._bmPrefix != null)
{
return(_code._bmPrefix.IsMatch(_runtext, _runtextpos, _runtextbeg, _runtextend));
}
return(true); // found a valid start or end anchor
}
else if (_code._bmPrefix != null)
{
_runtextpos = _code._bmPrefix.Scan(_runtext, _runtextpos, _runtextbeg, _runtextend);
if (_runtextpos == -1)
{
_runtextpos = (_code._rightToLeft ? _runtextbeg : _runtextend);
return(false);
}
return(true);
}
else if (_code._fcPrefix == null)
{
return(true);
}
_rightToLeft = _code._rightToLeft;
_caseInsensitive = _code._fcPrefix.CaseInsensitive;
set = _code._fcPrefix.Prefix;
if (RegexCharClass.IsSingleton(set))
{
char ch = RegexCharClass.SingletonChar(set);
for (i = Forwardchars(); i > 0; i--)
{
if (ch == Forwardcharnext())
{
Backwardnext();
return(true);
}
}
}
else
{
for (i = Forwardchars(); i > 0; i--)
{
if (RegexCharClass.CharInClass(Forwardcharnext(), set))
{
Backwardnext();
return(true);
}
}
}
return(false);
}
protected override bool FindFirstChar()
{
int i;
String set;
if (0 != (runanchors & (RegexFCD.Beginning | RegexFCD.Start | RegexFCD.EndZ | RegexFCD.End)))
{
if (!runcode._rightToLeft)
{
if ((0 != (runanchors & RegexFCD.Beginning) && runtextpos > runtextbeg) ||
(0 != (runanchors & RegexFCD.Start) && runtextpos > runtextstart))
{
runtextpos = runtextend;
return(false);
}
if (0 != (runanchors & RegexFCD.EndZ) && runtextpos < runtextend - 1)
{
runtextpos = runtextend - 1;
}
else if (0 != (runanchors & RegexFCD.End) && runtextpos < runtextend)
{
runtextpos = runtextend;
}
}
else
{
if ((0 != (runanchors & RegexFCD.End) && runtextpos < runtextend) ||
(0 != (runanchors & RegexFCD.EndZ) && (runtextpos < runtextend - 1 ||
(runtextpos == runtextend - 1 && CharAt(runtextpos) != '\n'))) ||
(0 != (runanchors & RegexFCD.Start) && runtextpos < runtextstart))
{
runtextpos = runtextbeg;
return(false);
}
if (0 != (runanchors & RegexFCD.Beginning) && runtextpos > runtextbeg)
{
runtextpos = runtextbeg;
}
}
if (runbmPrefix != null)
{
return(runbmPrefix.IsMatch(runtext, runtextpos, runtextbeg, runtextend));
}
}
else if (runbmPrefix != null)
{
runtextpos = runbmPrefix.Scan(runtext, runtextpos, runtextbeg, runtextend);
if (runtextpos == -1)
{
runtextpos = (runcode._rightToLeft ? runtextbeg : runtextend);
return(false);
}
return(true);
}
if (runfcPrefix == null)
{
return(true);
}
runrtl = runcode._rightToLeft;
runci = runfcPrefix.CaseInsensitive;
set = runfcPrefix.Prefix;
if (RegexCharClass.IsSingleton(set))
{
char ch = RegexCharClass.SingletonChar(set);
for (i = Forwardchars(); i > 0; i--)
{
if (ch == Forwardcharnext())
{
Backwardnext();
return(true);
}
}
}
else
{
for (i = Forwardchars(); i > 0; i--)
{
if (RegexCharClass.CharInSet(Forwardcharnext(), set, String.Empty))
{
Backwardnext();
return(true);
}
}
}
return(false);
}
protected override bool FindFirstChar()
{
int num;
if ((this.runanchors & 0x35) != 0)
{
if (!this.runcode._rightToLeft)
{
if ((((this.runanchors & 1) != 0) && (base.runtextpos > base.runtextbeg)) || (((this.runanchors & 4) != 0) && (base.runtextpos > base.runtextstart)))
{
base.runtextpos = base.runtextend;
return(false);
}
if (((this.runanchors & 0x10) != 0) && (base.runtextpos < (base.runtextend - 1)))
{
base.runtextpos = base.runtextend - 1;
}
else if (((this.runanchors & 0x20) != 0) && (base.runtextpos < base.runtextend))
{
base.runtextpos = base.runtextend;
}
}
else
{
if (((((this.runanchors & 0x20) != 0) && (base.runtextpos < base.runtextend)) || (((this.runanchors & 0x10) != 0) && ((base.runtextpos < (base.runtextend - 1)) || ((base.runtextpos == (base.runtextend - 1)) && (this.CharAt(base.runtextpos) != '\n'))))) || (((this.runanchors & 4) != 0) && (base.runtextpos < base.runtextstart)))
{
base.runtextpos = base.runtextbeg;
return(false);
}
if (((this.runanchors & 1) != 0) && (base.runtextpos > base.runtextbeg))
{
base.runtextpos = base.runtextbeg;
}
}
if (this.runbmPrefix != null)
{
return(this.runbmPrefix.IsMatch(base.runtext, base.runtextpos, base.runtextbeg, base.runtextend));
}
}
else if (this.runbmPrefix != null)
{
base.runtextpos = this.runbmPrefix.Scan(base.runtext, base.runtextpos, base.runtextbeg, base.runtextend);
if (base.runtextpos == -1)
{
base.runtextpos = this.runcode._rightToLeft ? base.runtextbeg : base.runtextend;
return(false);
}
return(true);
}
if (this.runfcPrefix == null)
{
return(true);
}
this.runrtl = this.runcode._rightToLeft;
this.runci = this.runfcPrefix.CaseInsensitive;
string prefix = this.runfcPrefix.Prefix;
if (RegexCharClass.IsSingleton(prefix))
{
char ch = RegexCharClass.SingletonChar(prefix);
for (num = this.Forwardchars(); num > 0; num--)
{
if (ch == this.Forwardcharnext())
{
this.Backwardnext();
return(true);
}
}
}
else
{
for (num = this.Forwardchars(); num > 0; num--)
{
if (RegexCharClass.CharInSet(this.Forwardcharnext(), prefix, string.Empty))
{
this.Backwardnext();
return(true);
}
}
}
return(false);
}
