/// <summary>
/// More http://www.w3.org/TR/REC-xml/#sec-pi.
/// </summary>
/// <param name="c">The next input character.</param>
protected XmlToken ProcessingStart(Char c)
{
if (c.IsLetter())
{
_stringBuffer.Clear();
_stringBuffer.Append(c);
return ProcessingTarget(_src.Next, XmlToken.Processing());
}
else
{
RaiseErrorOccurred(ErrorCode.AmbiguousOpenTag);
throw new ArgumentException("Invalid processing instruction.");
}
}
/// <summary>
/// Breaks apart an event key into the individual and normalized key and
/// any modifiers.
/// </summary>
/// <param name="evt">The evt.</param>
/// <param name="key">The key.</param>
/// <param name="modifiers">The mod.</param>
public static void DecomposeKeys(
EventKey evt,
out Key key,
out ModifierType modifiers)
{
// Use the keymap to decompose various elements of the hardware keys.
uint keyval;
int effectiveGroup,
level;
ModifierType consumedModifiers;
keymap.TranslateKeyboardState(
evt.HardwareKeycode,
evt.State,
evt.Group,
out keyval,
out effectiveGroup,
out level,
out consumedModifiers);
// Break out the identified keys and modifiers.
key = (Key)keyval;
modifiers = evt.State & ~consumedModifiers;
// Normalize some of the keys that don't make sense.
if (key == Key.ISO_Left_Tab)
{
key = Key.Tab;
modifiers |= ModifierType.ShiftMask;
}
// Check to see if we are a character and pull out the shift key if
// it is a capital letter. This is used to normalize so all the
// keys are uppercase with a shift modifier.
bool shiftWasConsumed = ((evt.State ^ modifiers) & ModifierType.ShiftMask)
!= 0;
var unicode = (char)Keyval.ToUnicode((uint)key);
if (shiftWasConsumed && Char.IsUpper(unicode))
{
modifiers |= ModifierType.ShiftMask;
}
if (Char.IsLetter(unicode) &&
Char.IsLower(unicode))
{
key = (Key)Char.ToUpper(unicode);
}
}
public void Indent1SuccessTest()
{
var toks = Seq(new Tok(1, 1, 'a'), new Tok(2, 1, 'b'), new Tok(2, 2, 'c'), new Tok(1, 3, 'd'), new Tok(1, 4, '1'));
var letter = satisfy <Tok>(t => Char.IsLetter(t.Val));
var digit = satisfy <Tok>(t => Char.IsDigit(t.Val));
var letters = many1(attempt(letter));
var digits = many1(attempt(digit));
var block = from ls1 in indented1 <Tok, Seq <Tok> >(letters)
from ls2 in indented1 <Tok, Seq <Tok> >(letters)
from dg1 in indented1 <Tok, Seq <Tok> >(digits)
from ___ in eof <Tok>()
select(ls1, ls2, dg1);
var res = block.Parse(toks, t => new Pos(t.Ln - 1, t.Col - 1)).ToEither().IfLeft(() => default);
/// <summary>
/// Gets the encoding specified in the text declaration.
/// </summary>
/// <param name="c">The character.</param>
/// <param name="decl">The current declaration.</param>
/// <returns>The token.</returns>
DtdToken TextDeclEncoding(Char c, DtdDeclToken decl)
{
if (c == Specification.EQ)
{
var q = _stream.Next;
if (q == Specification.DQ || q == Specification.SQ)
{
_stringBuffer.Clear();
c = _stream.Next;
if (c.IsLetter())
{
do
{
_stringBuffer.Append(c);
c = _stream.Next;
}
while (c.IsAlphanumericAscii() || c == Specification.DOT || c == Specification.UNDERSCORE || c == Specification.MINUS);
}
if (c == q)
{
decl.Encoding = _stringBuffer.ToString();
return TextDeclAfter(_stream.Next, decl);
}
}
}
throw Errors.Xml(ErrorCode.DtdTextDeclInvalid);
}
private HtmlToken ScriptData(Char c)
{
var length = _lastStartTag.Length;
var scriptLength = TagNames.Script.Length;
var state = ScriptState.Normal;
var offset = 0;
while (true)
{
switch (state)
{
// See 8.2.4.6 Script data state
case ScriptState.Normal:
{
switch (c)
{
case Symbols.Null:
AppendReplacement();
break;
case Symbols.LessThan:
StringBuffer.Append(Symbols.LessThan);
state = ScriptState.OpenTag;
continue;
case Symbols.EndOfFile:
Back();
return NewCharacter();
default:
StringBuffer.Append(c);
break;
}
c = GetNext();
break;
}
// See 8.2.4.17 Script data less-than sign state
case ScriptState.OpenTag:
{
c = GetNext();
if (c == Symbols.Solidus)
{
state = ScriptState.EndTag;
}
else if (c == Symbols.ExclamationMark)
{
state = ScriptState.StartEscape;
}
else
{
state = ScriptState.Normal;
}
break;
}
// See 8.2.4.20 Script data escape start state
case ScriptState.StartEscape:
{
StringBuffer.Append(Symbols.ExclamationMark);
c = GetNext();
if (c == Symbols.Minus)
{
state = ScriptState.StartEscapeDash;
}
else
{
state = ScriptState.Normal;
}
break;
}
// See 8.2.4.21 Script data escape start dash state
case ScriptState.StartEscapeDash:
{
c = GetNext();
StringBuffer.Append(Symbols.Minus);
if (c == Symbols.Minus)
{
StringBuffer.Append(Symbols.Minus);
state = ScriptState.EscapedDashDash;
}
else
{
state = ScriptState.Normal;
}
break;
}
// See 8.2.4.18 Script data end tag open state
case ScriptState.EndTag:
{
c = GetNext();
offset = StringBuffer.Append(Symbols.Solidus).Length;
var tag = NewTagClose();
while (c.IsLetter())
{
// See 8.2.4.19 Script data end tag name state
StringBuffer.Append(c);
c = GetNext();
var isspace = c.IsSpaceCharacter();
var isclosed = c == Symbols.GreaterThan;
var isslash = c == Symbols.Solidus;
var hasLength = StringBuffer.Length - offset == length;
if (hasLength && (isspace || isclosed || isslash))
{
var name = StringBuffer.ToString(offset, length);
if (name.Isi(_lastStartTag))
{
if (offset > 2)
{
Back(3 + length);
StringBuffer.Remove(offset - 2, length + 2);
return NewCharacter();
}
StringBuffer.Clear();
if (isspace)
{
tag.Name = _lastStartTag;
return ParseAttributes(tag);
}
else if (isslash)
{
tag.Name = _lastStartTag;
return TagSelfClosing(tag);
}
else if (isclosed)
{
tag.Name = _lastStartTag;
return EmitTag(tag);
}
}
}
}
state = ScriptState.Normal;
break;
}
// See 8.2.4.22 Script data escaped state
case ScriptState.Escaped:
{
switch (c)
{
case Symbols.Minus:
StringBuffer.Append(Symbols.Minus);
c = GetNext();
state = ScriptState.EscapedDash;
continue;
case Symbols.LessThan:
c = GetNext();
state = ScriptState.EscapedOpenTag;
continue;
case Symbols.Null:
AppendReplacement();
break;
case Symbols.EndOfFile:
Back();
return NewCharacter();
default:
state = ScriptState.Normal;
continue;
}
c = GetNext();
break;
}
// See 8.2.4.23 Script data escaped dash state
case ScriptState.EscapedDash:
{
switch (c)
{
case Symbols.Minus:
StringBuffer.Append(Symbols.Minus);
state = ScriptState.EscapedDashDash;
continue;
case Symbols.LessThan:
c = GetNext();
state = ScriptState.EscapedOpenTag;
continue;
case Symbols.Null:
AppendReplacement();
break;
case Symbols.EndOfFile:
Back();
return NewCharacter();
default:
StringBuffer.Append(c);
break;
}
c = GetNext();
state = ScriptState.Escaped;
break;
}
// See 8.2.4.24 Script data escaped dash dash state
case ScriptState.EscapedDashDash:
{
c = GetNext();
switch (c)
{
case Symbols.Minus:
StringBuffer.Append(Symbols.Minus);
break;
case Symbols.LessThan:
c = GetNext();
state = ScriptState.EscapedOpenTag;
continue;
case Symbols.GreaterThan:
StringBuffer.Append(Symbols.GreaterThan);
c = GetNext();
state = ScriptState.Normal;
continue;
case Symbols.Null:
AppendReplacement();
c = GetNext();
state = ScriptState.Escaped;
continue;
case Symbols.EndOfFile:
return NewCharacter();
default:
StringBuffer.Append(c);
c = GetNext();
state = ScriptState.Escaped;
continue;
}
break;
}
// See 8.2.4.25 Script data escaped less-than sign state
case ScriptState.EscapedOpenTag:
{
if (c == Symbols.Solidus)
{
c = GetNext();
state = ScriptState.EscapedEndTag;
}
else if (c.IsLetter())
{
offset = StringBuffer.Append(Symbols.LessThan).Length;
StringBuffer.Append(c);
state = ScriptState.StartDoubleEscape;
}
else
{
StringBuffer.Append(Symbols.LessThan);
state = ScriptState.Escaped;
}
break;
}
// See 8.2.4.26 Script data escaped end tag open state
case ScriptState.EscapedEndTag:
{
offset = StringBuffer.Append(Symbols.LessThan).Append(Symbols.Solidus).Length;
if (c.IsLetter())
{
StringBuffer.Append(c);
state = ScriptState.EscapedNameEndTag;
}
else
{
state = ScriptState.Escaped;
}
break;
}
// See 8.2.4.27 Script data escaped end tag name state
case ScriptState.EscapedNameEndTag:
{
c = GetNext();
var hasLength = StringBuffer.Length - offset == scriptLength;
if (hasLength && (c == Symbols.Solidus || c == Symbols.GreaterThan || c.IsSpaceCharacter()) &&
StringBuffer.ToString(offset, scriptLength).Isi(TagNames.Script))
{
Back(scriptLength + 3);
StringBuffer.Remove(offset - 2, scriptLength + 2);
return NewCharacter();
}
else if (!c.IsLetter())
{
state = ScriptState.Escaped;
}
else
{
StringBuffer.Append(c);
}
break;
}
// See 8.2.4.28 Script data double escape start state
case ScriptState.StartDoubleEscape:
{
c = GetNext();
var hasLength = StringBuffer.Length - offset == scriptLength;
if (hasLength && (c == Symbols.Solidus || c == Symbols.GreaterThan || c.IsSpaceCharacter()))
{
var isscript = StringBuffer.ToString(offset, scriptLength).Isi(TagNames.Script);
StringBuffer.Append(c);
c = GetNext();
state = isscript ? ScriptState.EscapedDouble : ScriptState.Escaped;
}
else if (c.IsLetter())
{
StringBuffer.Append(c);
}
else
{
state = ScriptState.Escaped;
}
break;
}
// See 8.2.4.29 Script data double escaped state
case ScriptState.EscapedDouble:
{
switch (c)
{
case Symbols.Minus:
StringBuffer.Append(Symbols.Minus);
c = GetNext();
state = ScriptState.EscapedDoubleDash;
continue;
case Symbols.LessThan:
StringBuffer.Append(Symbols.LessThan);
c = GetNext();
state = ScriptState.EscapedDoubleOpenTag;
continue;
case Symbols.Null:
AppendReplacement();
break;
case Symbols.EndOfFile:
RaiseErrorOccurred(HtmlParseError.EOF);
Back();
return NewCharacter();
}
StringBuffer.Append(c);
c = GetNext();
break;
}
// See 8.2.4.30 Script data double escaped dash state
case ScriptState.EscapedDoubleDash:
{
switch (c)
{
case Symbols.Minus:
StringBuffer.Append(Symbols.Minus);
state = ScriptState.EscapedDoubleDashDash;
continue;
case Symbols.LessThan:
StringBuffer.Append(Symbols.LessThan);
c = GetNext();
state = ScriptState.EscapedDoubleOpenTag;
continue;
case Symbols.Null:
RaiseErrorOccurred(HtmlParseError.Null);
c = Symbols.Replacement;
break;
case Symbols.EndOfFile:
RaiseErrorOccurred(HtmlParseError.EOF);
Back();
return NewCharacter();
}
state = ScriptState.EscapedDouble;
break;
}
// See 8.2.4.31 Script data double escaped dash dash state
case ScriptState.EscapedDoubleDashDash:
{
c = GetNext();
switch (c)
{
case Symbols.Minus:
StringBuffer.Append(Symbols.Minus);
break;
case Symbols.LessThan:
StringBuffer.Append(Symbols.LessThan);
c = GetNext();
state = ScriptState.EscapedDoubleOpenTag;
continue;
case Symbols.GreaterThan:
StringBuffer.Append(Symbols.GreaterThan);
c = GetNext();
state = ScriptState.Normal;
continue;
case Symbols.Null:
AppendReplacement();
c = GetNext();
state = ScriptState.EscapedDouble;
continue;
case Symbols.EndOfFile:
RaiseErrorOccurred(HtmlParseError.EOF);
Back();
return NewCharacter();
default:
StringBuffer.Append(c);
c = GetNext();
state = ScriptState.EscapedDouble;
continue;
}
break;
}
// See 8.2.4.32 Script data double escaped less-than sign state
case ScriptState.EscapedDoubleOpenTag:
{
if (c == Symbols.Solidus)
{
offset = StringBuffer.Append(Symbols.Solidus).Length;
state = ScriptState.EndDoubleEscape;
}
else
{
state = ScriptState.EscapedDouble;
}
break;
}
// See 8.2.4.33 Script data double escape end state
case ScriptState.EndDoubleEscape:
{
c = GetNext();
var hasLength = StringBuffer.Length - offset == scriptLength;
if (hasLength && (c.IsSpaceCharacter() || c == Symbols.Solidus || c == Symbols.GreaterThan))
{
var isscript = StringBuffer.ToString(offset, scriptLength).Isi(TagNames.Script);
StringBuffer.Append(c);
c = GetNext();
state = isscript ? ScriptState.Escaped : ScriptState.EscapedDouble;
}
else if (c.IsLetter())
{
StringBuffer.Append(c);
}
else
{
state = ScriptState.EscapedDouble;
}
break;
}
}
}
}
/// <summary>
/// See 8.2.4.28 Script data double escape start state
/// </summary>
/// <param name="c">The next input character.</param>
HtmlToken ScriptDataStartDoubleEscape(Char c)
{
if (c.IsSpaceCharacter() || c == Specification.SOLIDUS || c == Specification.GT)
{
_buffer.Append(c);
if (String.Compare(_stringBuffer.ToString(), Tags.SCRIPT, StringComparison.OrdinalIgnoreCase) == 0)
return ScriptDataEscapedDouble(_src.Next);
return ScriptDataEscaped(_src.Next);
}
else if (c.IsLetter())
{
_stringBuffer.Append(c);
_buffer.Append(c);
return ScriptDataStartDoubleEscape(_src.Next);
}
return ScriptDataEscaped(c);
}
/// <summary>
/// More http://www.w3.org/TR/REC-xml/#dt-etag.
/// </summary>
/// <param name="c">The next input character.</param>
XmlToken TagEnd(Char c)
{
if (c.IsLetter())
{
_stringBuffer.Clear();
_stringBuffer.Append(c);
return TagName(_src.Next, XmlToken.CloseTag());
}
else if (c == Specification.EOF)
{
_src.Back();
RaiseErrorOccurred(ErrorCode.EOF);
return XmlToken.EOF;
}
else
{
RaiseErrorOccurred(ErrorCode.TagClosedWrong);
return Data(_src.Next);
}
}
/// <summary>
/// See 8.2.4.25 Script data escaped less-than sign state
/// </summary>
/// <param name="c">The next input character.</param>
HtmlToken ScriptDataEscapedLT(Char c)
{
if (c == Specification.SOLIDUS)
{
return ScriptDataEndTag(_src.Next);
}
else if (c.IsLetter())
{
_stringBuffer.Clear();
_stringBuffer.Append(c);
_buffer.Append(Specification.LT);
_buffer.Append(c);
return ScriptDataStartDoubleEscape(_src.Next);
}
_buffer.Append(Specification.LT);
return ScriptDataEscaped(c);
}
/// <summary>
/// See 8.2.4.19 Script data end tag name state
/// </summary>
/// <param name="c">The next input character.</param>
/// <param name="tag">The current tag token.</param>
/// <returns>The emitted token.</returns>
HtmlToken ScriptDataNameEndTag(Char c, HtmlTagToken tag)
{
var name = _stringBuffer.ToString().ToLower();
var appropriateEndTag = name == _lastStartTag;
if (appropriateEndTag && c.IsSpaceCharacter())
{
tag.Name = name;
return AttributeBeforeName(_src.Next, tag);
}
else if (appropriateEndTag && c == Specification.SOLIDUS)
{
tag.Name = name;
return TagSelfClosing(_src.Next, tag);
}
else if (appropriateEndTag && c == Specification.GT)
{
tag.Name = name;
return EmitTag(tag);
}
else if (c.IsLetter())
{
_stringBuffer.Append(c);
return ScriptDataNameEndTag(_src.Next, tag);
}
_buffer.Append(Specification.LT).Append(Specification.SOLIDUS);
_buffer.Append(_stringBuffer.ToString());
return ScriptData(c);
}
/// <summary>
/// See 8.2.4.26 Script data escaped end tag open state
/// </summary>
/// <param name="c">The next input character.</param>
HtmlToken ScriptDataEscapedEndTag(Char c)
{
var offset = _stringBuffer.Append(Symbols.LessThan).Append(Symbols.Solidus).Length;
if (c.IsLetter())
{
_stringBuffer.Append(c);
return ScriptDataEscapedNameEndTag(NewTagClose(), offset);
}
else
{
return ScriptDataEscaped(c);
}
}
/// <summary>
/// More http://www.w3.org/TR/REC-xml/#NT-EncodingDecl.
/// </summary>
/// <param name="c">The next input character.</param>
/// <param name="decl">The current declaration token.</param>
XmlToken DeclarationEncodingBeforeValue(Char c, XmlDeclarationToken decl)
{
while (c.IsSpaceCharacter())
c = _src.Next;
if (c == Specification.DQ || c == Specification.SQ)
{
var q = c;
_stringBuffer.Clear();
c = _src.Next;
if (c.IsLetter())
return DeclarationEncodingValue(c, q, decl);
}
throw Errors.Xml(ErrorCode.XmlDeclarationInvalid);
}
/// <summary>
/// See 8.2.4.27 Script data escaped end tag name state
/// </summary>
/// <param name="c">The next input character.</param>
/// <param name="tag">The current tag token.</param>
/// <returns>The emitted token.</returns>
HtmlToken ScriptDataEscapedNameTag(Char c, HtmlTagToken tag)
{
var name = _stringBuffer.ToString().ToLower();
var appropriateEndTag = name == _lastStartTag;
if (appropriateEndTag && c.IsSpaceCharacter())
{
tag.Name = name;
return AttributeBeforeName(Next, tag);
}
else if (appropriateEndTag && c == Specification.Solidus)
{
tag.Name = name;
return TagSelfClosing(Next, tag);
}
else if (appropriateEndTag && c == Specification.GreaterThan)
{
tag.Name = name;
return EmitTag(tag);
}
else if (c.IsLetter())
{
_stringBuffer.Append(c);
return ScriptDataEscapedNameTag(Next, tag);
}
_buffer.Append(Specification.LessThan).Append(Specification.Solidus);
_buffer.Append(_stringBuffer.ToString());
return ScriptDataEscaped(c);
}
/// <summary>
/// See 8.2.4.17 Script data less-than sign state
/// </summary>
/// <param name="c">The next input character.</param>
HtmlToken ScriptDataLt(Char c)
{
_stringBuffer.Append(Symbols.LessThan);
if (c == Symbols.Solidus)
{
// See 8.2.4.18 Script data end tag open state
c = GetNext();
var offset = _stringBuffer.Append(Symbols.Solidus).Length;
if (c.IsLetter())
{
_stringBuffer.Append(c);
return ScriptDataNameEndTag(NewTagClose(), offset);
}
}
else if (c == Symbols.ExclamationMark)
{
// See 8.2.4.20 Script data escape start state
_stringBuffer.Append(Symbols.ExclamationMark);
c = GetNext();
if (c == Symbols.Minus)
return ScriptDataEscapeDashLt(GetNext());
}
return ScriptData(c);
}
/// <summary>
/// See 8.2.4.25 Script data escaped less-than sign state
/// </summary>
/// <param name="c">The next input character.</param>
HtmlToken ScriptDataEscapedLT(Char c)
{
if (c == Specification.Solidus)
{
return ScriptDataEndTag(Next);
}
else if (c.IsLetter())
{
_stringBuffer.Clear();
_stringBuffer.Append(c);
_buffer.Append(Specification.LessThan);
_buffer.Append(c);
return ScriptDataStartDoubleEscape(Next);
}
_buffer.Append(Specification.LessThan);
return ScriptDataEscaped(c);
}
/// <summary>
/// See 8.2.4.26 Script data escaped end tag open state
/// </summary>
/// <param name="c">The next input character.</param>
/// <param name="tag">The current tag token.</param>
/// <returns>The emitted token.</returns>
HtmlToken ScriptDataEscapedEndTag(Char c, HtmlTagToken tag)
{
if (c.IsLetter())
{
_stringBuffer.Clear();
_stringBuffer.Append(c);
return ScriptDataEscapedEndTag(Next, tag);
}
_buffer.Append(Specification.LessThan).Append(Specification.Solidus);
return ScriptDataEscaped(c);
}
/// <summary>
/// See 8.2.4.18 Script data end tag open state
/// </summary>
/// <param name="c">The next input character.</param>
HtmlToken ScriptDataEndTag(Char c)
{
if (c.IsLetter())
{
_stringBuffer.Clear();
_stringBuffer.Append(c);
return ScriptDataNameEndTag(Next, HtmlToken.CloseTag());
}
_buffer.Append(Specification.LessThan).Append(Specification.Solidus);
return ScriptData(c);
}
/// <summary>
/// See 8.2.4.33 Script data double escape end state
/// </summary>
/// <param name="c">The next input character.</param>
HtmlToken ScriptDataEndDoubleEscape(Char c)
{
if (c.IsSpaceCharacter() || c == Specification.Solidus || c == Specification.GreaterThan)
{
_buffer.Append(c);
if (String.Compare(_stringBuffer.ToString(), Tags.Script, StringComparison.OrdinalIgnoreCase) == 0)
return ScriptDataEscaped(Next);
return ScriptDataEscapedDouble(Next);
}
else if (c.IsLetter())
{
_stringBuffer.Append(c);
_buffer.Append(c);
return ScriptDataEndDoubleEscape(Next);
}
return ScriptDataEscapedDouble(c);
}
/// <summary>
/// More http://www.w3.org/TR/REC-xml/#sec-starttags.
/// </summary>
/// <param name="c">The next input character.</param>
XmlToken TagOpen(Char c)
{
if (c == Specification.EM)
{
return MarkupDeclaration(_src.Next);
}
else if (c == Specification.QM)
{
c = _src.Next;
if (_src.ContinuesWith("xml", false))
{
_src.Advance(2);
return DeclarationStart(_src.Next);
}
return ProcessingStart(c);
}
else if (c == Specification.SOLIDUS)
{
return TagEnd(_src.Next);
}
else if (c.IsLetter())
{
_stringBuffer.Clear();
_stringBuffer.Append(c);
return TagName(_src.Next, XmlToken.OpenTag());
}
else
{
RaiseErrorOccurred(ErrorCode.AmbiguousOpenTag);
return XmlToken.Character(Specification.LT);
}
}
/// <summary>
/// See 8.2.4.25 Script data escaped less-than sign state
/// </summary>
/// <param name="c">The next input character.</param>
HtmlToken ScriptDataEscapedLT(Char c)
{
if (c == Symbols.Solidus)
return ScriptDataEscapedEndTag(GetNext());
if (c.IsLetter())
{
var offset = _stringBuffer.Append(Symbols.LessThan).Length;
_stringBuffer.Append(c);
return ScriptDataStartDoubleEscape(offset);
}
else
{
_stringBuffer.Append(Symbols.LessThan);
return ScriptDataEscaped(c);
}
}
/// <summary>
/// See 8.2.4.18 Script data end tag open state
/// </summary>
/// <param name="c">The next input character.</param>
HtmlToken ScriptDataEndTag(Char c)
{
if (c.IsLetter())
{
_stringBuffer.Clear();
_stringBuffer.Append(c);
return ScriptDataNameEndTag(_src.Next, HtmlToken.CloseTag());
}
_buffer.Append(Specification.LT).Append(Specification.SOLIDUS);
return ScriptData(c);
}
/// <summary>
/// More http://www.w3.org/TR/REC-xml/#NT-EncodingDecl.
/// </summary>
/// <param name="c">The next input character.</param>
/// <param name="decl">The current declaration token.</param>
XmlToken DeclarationEncodingBeforeValue(Char c, XmlDeclarationToken decl)
{
while (c.IsSpaceCharacter())
c = GetNext();
if (c == Symbols.DoubleQuote || c == Symbols.SingleQuote)
{
var q = c;
c = GetNext();
if (c.IsLetter())
return DeclarationEncodingValue(c, q, decl);
}
throw XmlParseError.XmlDeclarationInvalid.At(GetCurrentPosition());
}
/// <summary>
/// See 8.2.4.26 Script data escaped end tag open state
/// </summary>
/// <param name="c">The next input character.</param>
/// <param name="tag">The current tag token.</param>
/// <returns>The emitted token.</returns>
HtmlToken ScriptDataEscapedEndTag(Char c, HtmlTagToken tag)
{
if (c.IsLetter())
{
_stringBuffer.Clear();
_stringBuffer.Append(c);
return ScriptDataEscapedEndTag(_src.Next, tag);
}
_buffer.Append(Specification.LT).Append(Specification.SOLIDUS);
return ScriptDataEscaped(c);
}