public string GetFirstChars(CultureInfo culture)
{
if (CaseInsensitive)
{
_cc.AddLowercase(culture);
}
return(_cc.ToStringClass());
}
/*
* Scans chars following a '\' (not counting the '\'), and returns
* a RegexNode for the type of atom scanned.
*/
internal RegexNode ScanBackslash()
{
char ch;
RegexCharClass cc;
if (CharsRight() == 0)
throw MakeException(SR.IllegalEndEscape);
switch (ch = RightChar())
{
case 'b':
case 'B':
case 'A':
case 'G':
case 'Z':
case 'z':
MoveRight();
return new RegexNode(TypeFromCode(ch), _options);
case 'w':
MoveRight();
if (UseOptionE())
return new RegexNode(RegexNode.Set, _options, RegexCharClass.ECMAWordClass);
return new RegexNode(RegexNode.Set, _options, RegexCharClass.WordClass);
case 'W':
MoveRight();
if (UseOptionE())
return new RegexNode(RegexNode.Set, _options, RegexCharClass.NotECMAWordClass);
return new RegexNode(RegexNode.Set, _options, RegexCharClass.NotWordClass);
case 's':
MoveRight();
if (UseOptionE())
return new RegexNode(RegexNode.Set, _options, RegexCharClass.ECMASpaceClass);
return new RegexNode(RegexNode.Set, _options, RegexCharClass.SpaceClass);
case 'S':
MoveRight();
if (UseOptionE())
return new RegexNode(RegexNode.Set, _options, RegexCharClass.NotECMASpaceClass);
return new RegexNode(RegexNode.Set, _options, RegexCharClass.NotSpaceClass);
case 'd':
MoveRight();
if (UseOptionE())
return new RegexNode(RegexNode.Set, _options, RegexCharClass.ECMADigitClass);
return new RegexNode(RegexNode.Set, _options, RegexCharClass.DigitClass);
case 'D':
MoveRight();
if (UseOptionE())
return new RegexNode(RegexNode.Set, _options, RegexCharClass.NotECMADigitClass);
return new RegexNode(RegexNode.Set, _options, RegexCharClass.NotDigitClass);
case 'p':
case 'P':
MoveRight();
cc = new RegexCharClass();
cc.AddCategoryFromName(ParseProperty(), (ch != 'p'), UseOptionI(), _pattern);
if (UseOptionI())
cc.AddLowercase(_culture);
return new RegexNode(RegexNode.Set, _options, cc.ToStringClass());
default:
return ScanBasicBackslash();
}
}
/*
* Scans chars following a '\' (not counting the '\'), and returns
* a RegexNode for the type of atom scanned.
*/
private RegexNode ScanBackslash()
{
char ch;
RegexCharClass cc;
if (CharsRight() == 0)
{
throw MakeException(Strings.IllegalEndEscape);
}
switch (ch = RightChar())
{
case 'b':
case 'B':
case 'A':
case 'G':
case 'Z':
case 'z':
MoveRight();
return(new RegexNode(TypeFromCode(ch), _options));
case 'w':
MoveRight();
if (UseOptionE())
{
return(new RegexNode(RegexNode.Set, _options, RegexCharClass.ECMAWordClass));
}
return(new RegexNode(RegexNode.Set, _options, RegexCharClass.WordClass));
case 'W':
MoveRight();
if (UseOptionE())
{
return(new RegexNode(RegexNode.Set, _options, RegexCharClass.NotECMAWordClass));
}
return(new RegexNode(RegexNode.Set, _options, RegexCharClass.NotWordClass));
case 's':
MoveRight();
if (UseOptionE())
{
return(new RegexNode(RegexNode.Set, _options, RegexCharClass.ECMASpaceClass));
}
return(new RegexNode(RegexNode.Set, _options, RegexCharClass.SpaceClass));
case 'S':
MoveRight();
if (UseOptionE())
{
return(new RegexNode(RegexNode.Set, _options, RegexCharClass.NotECMASpaceClass));
}
return(new RegexNode(RegexNode.Set, _options, RegexCharClass.NotSpaceClass));
case 'd':
MoveRight();
if (UseOptionE())
{
return(new RegexNode(RegexNode.Set, _options, RegexCharClass.ECMADigitClass));
}
return(new RegexNode(RegexNode.Set, _options, RegexCharClass.DigitClass));
case 'D':
MoveRight();
if (UseOptionE())
{
return(new RegexNode(RegexNode.Set, _options, RegexCharClass.NotECMADigitClass));
}
return(new RegexNode(RegexNode.Set, _options, RegexCharClass.NotDigitClass));
case 'p':
case 'P':
MoveRight();
cc = new RegexCharClass();
cc.AddCategoryFromName(ParseProperty(), ch != 'p', UseOptionI(), _pattern);
if (UseOptionI())
{
cc.AddLowercase(_culture);
}
return(new RegexNode(RegexNode.Set, _options, cc.ToStringClass()));
default:
return(ScanBasicBackslash());
}
}
