/// <summary>
/// More http://www.w3.org/TR/REC-xml/#sec-comments.
/// </summary>
/// <param name="c">The next input character.</param>
XmlToken CommentBangEnd(Char c)
{
if (c == Specification.MINUS)
{
_stringBuffer.Append(Specification.MINUS);
_stringBuffer.Append(Specification.MINUS);
_stringBuffer.Append(Specification.EM);
return(CommentDashEnd(_src.Next));
}
else if (c == Specification.GT)
{
return(XmlToken.Comment(_stringBuffer.ToString()));
}
else if (c == Specification.NULL)
{
RaiseErrorOccurred(ErrorCode.NULL);
_stringBuffer.Append(Specification.MINUS);
_stringBuffer.Append(Specification.MINUS);
_stringBuffer.Append(Specification.EM);
_stringBuffer.Append(Specification.REPLACEMENT);
return(Comment(_src.Next));
}
else if (c == Specification.EOF)
{
RaiseErrorOccurred(ErrorCode.EOF);
_src.Back();
return(XmlToken.Comment(_stringBuffer.ToString()));
}
_stringBuffer.Append(Specification.MINUS);
_stringBuffer.Append(Specification.MINUS);
_stringBuffer.Append(Specification.EM);
_stringBuffer.Append(c);
return(Comment(_src.Next));
}
/// <summary>
/// More http://www.w3.org/TR/REC-xml/#sec-comments.
/// </summary>
/// <param name="c">The next input character.</param>
protected XmlToken CommentStart(Char c)
{
_stringBuffer.Clear();
if (c == Specification.MINUS)
{
return(CommentDashStart(_src.Next));
}
else if (c == Specification.NULL)
{
RaiseErrorOccurred(ErrorCode.NULL);
_stringBuffer.Append(Specification.REPLACEMENT);
return(Comment(_src.Next));
}
else if (c == Specification.GT)
{
RaiseErrorOccurred(ErrorCode.TagClosedWrong);
return(XmlToken.Comment(_stringBuffer.ToString()));
}
else if (c == Specification.EOF)
{
RaiseErrorOccurred(ErrorCode.EOF);
_src.Back();
return(XmlToken.Comment(_stringBuffer.ToString()));
}
else
{
_stringBuffer.Append(c);
return(Comment(_src.Next));
}
}
/// <summary>
/// More http://www.w3.org/TR/REC-xml/#sec-comments.
/// </summary>
/// <param name="c">The next input character.</param>
XmlToken CommentEnd(Char c)
{
if (c == Specification.GT)
{
return(XmlToken.Comment(stringBuffer.ToString()));
}
else if (c == Specification.NULL)
{
RaiseErrorOccurred(ErrorCode.NULL);
stringBuffer.Append(Specification.MINUS);
stringBuffer.Append(Specification.REPLACEMENT);
return(Comment(src.Next));
}
else if (c == Specification.EM)
{
RaiseErrorOccurred(ErrorCode.CommentEndedWithEM);
return(CommentBangEnd(src.Next));
}
else if (c == Specification.MINUS)
{
RaiseErrorOccurred(ErrorCode.CommentEndedWithDash);
stringBuffer.Append(Specification.MINUS);
return(CommentEnd(src.Next));
}
else if (c == Specification.EOF)
{
RaiseErrorOccurred(ErrorCode.EOF);
src.Back();
return(XmlToken.Comment(stringBuffer.ToString()));
}
RaiseErrorOccurred(ErrorCode.CommentEndedUnexpected);
stringBuffer.Append(Specification.MINUS);
stringBuffer.Append(Specification.MINUS);
stringBuffer.Append(c);
return(Comment(src.Next));
}
/// <summary>
/// More http://www.w3.org/TR/REC-xml/#sec-comments.
/// </summary>
/// <param name="c">The next input character.</param>
XmlToken Comment(Char c)
{
while (true)
{
if (c == Specification.MINUS)
{
return(CommentDashEnd(src.Next));
}
else if (c == Specification.EOF)
{
RaiseErrorOccurred(ErrorCode.EOF);
src.Back();
return(XmlToken.Comment(stringBuffer.ToString()));
}
else if (c == Specification.NULL)
{
RaiseErrorOccurred(ErrorCode.NULL);
c = Specification.REPLACEMENT;
}
stringBuffer.Append(c);
c = src.Next;
}
}
/// <summary>
/// Called once an & character is being seen.
/// </summary>
/// <param name="c">The next character after the & character.</param>
/// <returns>The entity token.</returns>
XmlEntityToken CharacterReference(Char c)
{
var buffer = Pool.NewStringBuilder();
if (c == Specification.NUM)
{
c = _src.Next;
var hex = c == 'x' || c == 'X';
if (hex)
{
c = _src.Next;
while (c.IsHex())
{
buffer.Append(c);
c = _src.Next;
}
}
else
{
while (c.IsDigit())
{
buffer.Append(c);
c = _src.Next;
}
}
if (buffer.Length > 0 && c == Specification.SC)
{
return new XmlEntityToken {
Value = buffer.ToPool(), IsNumeric = true, IsHex = hex
}
}
;
}
else if (c.IsXmlNameStart())
{
do
{
buffer.Append(c);
c = _src.Next;
}while (c.IsXmlName());
if (c == Specification.SC)
{
return new XmlEntityToken {
Value = buffer.ToPool()
}
}
;
}
buffer.ToPool();
throw Errors.Xml(ErrorCode.CharacterReferenceNotTerminated);
}
#endregion
#region Tags
/// <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));
}
if (c == Specification.QM)
{
c = _src.Next;
if (_src.ContinuesWith(Tags.XML, false))
{
_src.Advance(2);
return(DeclarationStart(_src.Next));
}
return(ProcessingStart(c));
}
if (c == Specification.SOLIDUS)
{
return(TagEnd(_src.Next));
}
if (c.IsXmlNameStart())
{
_stringBuffer.Clear();
_stringBuffer.Append(c);
return(TagName(_src.Next, XmlToken.OpenTag()));
}
throw Errors.Xml(ErrorCode.XmlInvalidStartTag);
}
/// <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.IsXmlNameStart())
{
_stringBuffer.Clear();
do
{
_stringBuffer.Append(c);
c = _src.Next;
}while (c.IsXmlName());
while (c.IsSpaceCharacter())
{
c = _src.Next;
}
if (c == Specification.GT)
{
var tag = XmlToken.CloseTag();
tag.Name = _stringBuffer.ToString();
return(tag);
}
}
if (c == Specification.EOF)
{
throw Errors.Xml(ErrorCode.EOF);
}
throw Errors.Xml(ErrorCode.XmlInvalidEndTag);
}
/// <summary>
/// More http://www.w3.org/TR/REC-xml/#NT-Name.
/// </summary>
/// <param name="c">The next input character.</param>
/// <param name="tag">The current tag token.</param>
/// <returns>The emitted token.</returns>
XmlToken TagName(Char c, XmlTagToken tag)
{
while (c.IsXmlName())
{
_stringBuffer.Append(c);
c = _src.Next;
}
tag.Name = _stringBuffer.ToString();
if (c == Specification.EOF)
{
throw Errors.Xml(ErrorCode.EOF);
}
if (c == Specification.GT)
{
return(tag);
}
else if (c.IsSpaceCharacter())
{
return(AttributeBeforeName(_src.Next, tag));
}
else if (c == Specification.SOLIDUS)
{
return(TagSelfClosing(_src.Next, tag));
}
throw Errors.Xml(ErrorCode.XmlInvalidName);
}
/// <summary>
/// More http://www.w3.org/TR/REC-xml/#d0e2480.
/// </summary>
/// <param name="c">The next input character.</param>
/// <param name="tag">The current tag token.</param>
XmlToken TagSelfClosing(Char c, XmlTagToken tag)
{
tag.IsSelfClosing = true;
if (c == Specification.GT)
{
return(tag);
}
if (c == Specification.EOF)
{
throw Errors.Xml(ErrorCode.EOF);
}
throw Errors.Xml(ErrorCode.XmlInvalidName);
}
/// <summary>
/// More http://www.w3.org/TR/REC-xml/#dt-markup.
/// </summary>
/// <param name="c">The next input character.</param>
XmlToken MarkupDeclaration(Char c)
{
if (_src.ContinuesWith("--"))
{
_src.Advance();
return(CommentStart(_src.Next));
}
else if (_src.ContinuesWith(Tags.DOCTYPE, false))
{
_src.Advance(6);
return(Doctype(_src.Next));
}
else if (_src.ContinuesWith(CDATA, false))
{
_src.Advance(6);
return(CData(_src.Next));
}
throw Errors.Xml(ErrorCode.UndefinedMarkupDeclaration);
}
#endregion
#region XML Declaration
/// <summary>
/// More http://www.w3.org/TR/REC-xml/#NT-XMLDecl.
/// </summary>
/// <param name="c">The next input character.</param>
XmlToken DeclarationStart(Char c)
{
if (!c.IsSpaceCharacter())
{
_stringBuffer.Clear();
_stringBuffer.Append(Tags.XML);
return(ProcessingTarget(c, XmlToken.Processing()));
}
do
{
c = _src.Next;
}while (c.IsSpaceCharacter());
if (_src.ContinuesWith(AttributeNames.VERSION, false))
{
_src.Advance(6);
return(DeclarationVersionAfterName(_src.Next, XmlToken.Declaration()));
}
throw Errors.Xml(ErrorCode.XmlDeclarationInvalid);
}
/// <summary>
/// More http://www.w3.org/TR/REC-xml/#NT-VersionInfo.
/// </summary>
/// <param name="c">The next input character.</param>
/// <param name="decl">The current declaration token.</param>
XmlToken DeclarationVersionAfterName(Char c, XmlDeclarationToken decl)
{
while (c.IsSpaceCharacter())
{
c = _src.Next;
}
if (c == Specification.EQ)
{
return(DeclarationVersionBeforeValue(_src.Next, decl));
}
throw Errors.Xml(ErrorCode.XmlDeclarationInvalid);
}
/// <summary>
/// More http://www.w3.org/TR/REC-xml/#NT-VersionInfo.
/// </summary>
/// <param name="c">The next input character.</param>
/// <param name="decl">The current declaration token.</param>
XmlToken DeclarationVersionBeforeValue(Char c, XmlDeclarationToken decl)
{
while (c.IsSpaceCharacter())
{
c = _src.Next;
}
if (c == Specification.DQ || c == Specification.SQ)
{
_stringBuffer.Clear();
return(DeclarationVersionValue(_src.Next, c, decl));
}
throw Errors.Xml(ErrorCode.XmlDeclarationInvalid);
}
/// <summary>
/// More http://www.w3.org/TR/REC-xml/#NT-VersionInfo.
/// </summary>
/// <param name="c">The next input character.</param>
/// <param name="q">The quote character.</param>
/// <param name="decl">The current declaration token.</param>
XmlToken DeclarationVersionValue(Char c, Char q, XmlDeclarationToken decl)
{
while (c != q)
{
if (c == Specification.EOF)
{
throw Errors.Xml(ErrorCode.EOF);
}
_stringBuffer.Append(c);
c = _src.Next;
}
decl.Version = _stringBuffer.ToString();
c = _src.Next;
if (c.IsSpaceCharacter())
{
return(DeclarationAfterVersion(c, decl));
}
return(DeclarationEnd(c, decl));
}
/// <summary>
/// More http://www.w3.org/TR/REC-xml/#NT-VersionNum.
/// </summary>
/// <param name="c">The next input character.</param>
/// <param name="decl">The current declaration token.</param>
XmlToken DeclarationAfterVersion(Char c, XmlDeclarationToken decl)
{
while (c.IsSpaceCharacter())
{
c = _src.Next;
}
if (_src.ContinuesWith(AttributeNames.ENCODING, false))
{
_src.Advance(7);
return(DeclarationEncodingAfterName(_src.Next, decl));
}
else if (_src.ContinuesWith(AttributeNames.STANDALONE, false))
{
_src.Advance(9);
return(DeclarationStandaloneAfterName(_src.Next, decl));
}
return(DeclarationEnd(c, decl));
}
/// <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 DeclarationEncodingAfterName(Char c, XmlDeclarationToken decl)
{
while (c.IsSpaceCharacter())
{
c = _src.Next;
}
if (c == Specification.EQ)
{
return(DeclarationEncodingBeforeValue(_src.Next, decl));
}
throw Errors.Xml(ErrorCode.XmlDeclarationInvalid);
}
/// <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>
/// More http://www.w3.org/TR/REC-xml/#NT-EncodingDecl.
/// </summary>
/// <param name="c">The next input character.</param>
/// <param name="q">The quote character.</param>
/// <param name="decl">The current declaration token.</param>
XmlToken DeclarationEncodingValue(Char c, Char q, XmlDeclarationToken decl)
{
do
{
if (c.IsAlphanumericAscii() || c == Specification.DOT || c == Specification.UNDERSCORE || c == Specification.MINUS)
{
_stringBuffer.Append(c);
c = _src.Next;
}
else
{
throw Errors.Xml(ErrorCode.XmlDeclarationInvalid);
}
}while (c != q);
decl.Encoding = _stringBuffer.ToString();
c = _src.Next;
if (c.IsSpaceCharacter())
{
return(DeclarationAfterEncoding(c, decl));
}
return(DeclarationEnd(c, decl));
}
/// <summary>
/// More http://www.w3.org/TR/REC-xml/#NT-SDDecl.
/// </summary>
/// <param name="c">The next input character.</param>
/// <param name="decl">The current declaration token.</param>
XmlToken DeclarationAfterEncoding(Char c, XmlDeclarationToken decl)
{
while (c.IsSpaceCharacter())
{
c = _src.Next;
}
if (_src.ContinuesWith(AttributeNames.STANDALONE, false))
{
_src.Advance(9);
return(DeclarationStandaloneAfterName(_src.Next, decl));
}
return(DeclarationEnd(c, decl));
}
/// <summary>
/// More http://www.w3.org/TR/REC-xml/#NT-SDDecl.
/// </summary>
/// <param name="c">The next input character.</param>
/// <param name="decl">The current declaration token.</param>
XmlToken DeclarationStandaloneAfterName(Char c, XmlDeclarationToken decl)
{
while (c.IsSpaceCharacter())
{
c = _src.Next;
}
if (c == Specification.EQ)
{
return(DeclarationStandaloneBeforeValue(_src.Next, decl));
}
throw Errors.Xml(ErrorCode.XmlDeclarationInvalid);
}
/// <summary>
/// More http://www.w3.org/TR/REC-xml/#NT-SDDecl.
/// </summary>
/// <param name="c">The next input character.</param>
/// <param name="decl">The current declaration token.</param>
XmlToken DeclarationStandaloneBeforeValue(Char c, XmlDeclarationToken decl)
{
while (c.IsSpaceCharacter())
{
c = _src.Next;
}
if (c == Specification.DQ || c == Specification.SQ)
{
_stringBuffer.Clear();
return(DeclarationStandaloneValue(_src.Next, c, decl));
}
throw Errors.Xml(ErrorCode.XmlDeclarationInvalid);
}
/// <summary>
/// More http://www.w3.org/TR/REC-xml/#NT-SDDecl.
/// </summary>
/// <param name="c">The next input character.</param>
/// <param name="q">The quote character.</param>
/// <param name="decl">The current declaration token.</param>
XmlToken DeclarationStandaloneValue(Char c, Char q, XmlDeclarationToken decl)
{
while (c != q)
{
if (c == Specification.EOF)
{
throw Errors.Xml(ErrorCode.EOF);
}
_stringBuffer.Append(c);
c = _src.Next;
}
var s = _stringBuffer.ToString();
if (s.Equals(YES))
{
decl.Standalone = true;
}
else if (s.Equals(NO))
{
decl.Standalone = false;
}
else
{
throw Errors.Xml(ErrorCode.XmlDeclarationInvalid);
}
return(DeclarationEnd(_src.Next, decl));
}
/// <summary>
/// More http://www.w3.org/TR/REC-xml/#NT-XMLDecl.
/// </summary>
/// <param name="c">The next input character.</param>
/// <param name="decl">The current declaration token.</param>
XmlDeclarationToken DeclarationEnd(Char c, XmlDeclarationToken decl)
{
while (c.IsSpaceCharacter())
{
c = _src.Next;
}
if (c != Specification.QM || _src.Next != Specification.GT)
{
throw Errors.Xml(ErrorCode.XmlDeclarationInvalid);
}
return(decl);
}
#endregion
#region Doctype
/// <summary>
/// See 8.2.4.52 DOCTYPE state
/// </summary>
/// <param name="c">The next input character.</param>
XmlToken Doctype(Char c)
{
if (c.IsSpaceCharacter())
{
return(DoctypeNameBefore(_src.Next));
}
throw Errors.Xml(ErrorCode.DoctypeInvalid);
}
/// <summary>
/// See 8.2.4.53 Before DOCTYPE name state
/// </summary>
/// <param name="c">The next input character.</param>
XmlToken DoctypeNameBefore(Char c)
{
while (c.IsSpaceCharacter())
{
c = _src.Next;
}
if (c.IsXmlNameStart())
{
_stringBuffer.Clear();
_stringBuffer.Append(c);
return(DoctypeName(_src.Next, XmlToken.Doctype()));
}
throw Errors.Xml(ErrorCode.DoctypeInvalid);
}
/// <summary>
/// See 8.2.4.54 DOCTYPE name state
/// </summary>
/// <param name="c">The next input character.</param>
/// <param name="doctype">The current doctype token.</param>
/// <returns>The emitted token.</returns>
XmlToken DoctypeName(Char c, XmlDoctypeToken doctype)
{
while (c.IsXmlName())
{
_stringBuffer.Append(c);
c = _src.Next;
}
doctype.Name = _stringBuffer.ToString();
_stringBuffer.Clear();
if (c == Specification.GT)
{
return(doctype);
}
else if (c.IsSpaceCharacter())
{
return(DoctypeNameAfter(_src.Next, doctype));
}
throw Errors.Xml(ErrorCode.DoctypeInvalid);
}
/// <summary>
/// See 8.2.4.55 After DOCTYPE name state
/// </summary>
/// <param name="c">The next input character.</param>
/// <param name="doctype">The current doctype token.</param>
/// <returns>The emitted token.</returns>
XmlToken DoctypeNameAfter(Char c, XmlDoctypeToken doctype)
{
while (c.IsSpaceCharacter())
{
c = _src.Next;
}
if (c == Specification.GT)
{
return(doctype);
}
if (_src.ContinuesWith(PUBLIC, false))
{
_src.Advance(5);
return(DoctypePublic(_src.Next, doctype));
}
else if (_src.ContinuesWith(SYSTEM, false))
{
_src.Advance(5);
return(DoctypeSystem(_src.Next, doctype));
}
else if (c == Specification.SBO)
{
_src.Advance();
ScanInternalSubset(doctype);
return(DoctypeAfter(_src.Next, doctype));
}
throw Errors.Xml(ErrorCode.DoctypeInvalid);
}
/// <summary>
/// See 8.2.4.56 After DOCTYPE public keyword state
/// </summary>
/// <param name="c">The next input character.</param>
/// <param name="doctype">The current doctype token.</param>
/// <returns>The emitted token.</returns>
XmlToken DoctypePublic(Char c, XmlDoctypeToken doctype)
{
if (c.IsSpaceCharacter())
{
while (c.IsSpaceCharacter())
{
c = _src.Next;
}
if (c == Specification.DQ || c == Specification.SQ)
{
doctype.PublicIdentifier = String.Empty;
return(DoctypePublicIdentifierValue(_src.Next, c, doctype));
}
}
throw Errors.Xml(ErrorCode.DoctypeInvalid);
}
/// <summary>
/// See 8.2.4.58 DOCTYPE public identifier (double-quoted) state
/// </summary>
/// <param name="c">The next input character.</param>
/// <param name="q">The closing character.</param>
/// <param name="doctype">The current doctype token.</param>
/// <returns>The emitted token.</returns>
XmlToken DoctypePublicIdentifierValue(Char c, Char q, XmlDoctypeToken doctype)
{
while (c != q)
{
if (!c.IsPubidChar())
{
throw Errors.Xml(ErrorCode.XmlInvalidPubId);
}
_stringBuffer.Append(c);
c = _src.Next;
}
doctype.PublicIdentifier = _stringBuffer.ToString();
_stringBuffer.Clear();
return(DoctypePublicIdentifierAfter(_src.Next, doctype));
}
/// <summary>
/// See 8.2.4.60 After DOCTYPE public identifier state
/// </summary>
/// <param name="c">The next input character.</param>
/// <param name="doctype">The current doctype token.</param>
/// <returns>The emitted token.</returns>
XmlToken DoctypePublicIdentifierAfter(Char c, XmlDoctypeToken doctype)
{
if (c == Specification.GT)
{
return(doctype);
}
else if (c.IsSpaceCharacter())
{
return(DoctypeBetween(_src.Next, doctype));
}
throw Errors.Xml(ErrorCode.DoctypeInvalid);
}
/// <summary>
/// See 8.2.4.61 Between DOCTYPE public and system identifiers state
/// </summary>
/// <param name="c">The next input character.</param>
/// <param name="doctype">The current doctype token.</param>
/// <returns>The emitted token.</returns>
XmlToken DoctypeBetween(Char c, XmlDoctypeToken doctype)
{
while (c.IsSpaceCharacter())
{
c = _src.Next;
}
if (c == Specification.GT)
{
return(doctype);
}
if (c == Specification.DQ || c == Specification.SQ)
{
doctype.SystemIdentifier = String.Empty;
return(DoctypeSystemIdentifierValue(_src.Next, c, doctype));
}
throw Errors.Xml(ErrorCode.DoctypeInvalid);
}
/// <summary>
/// See 8.2.4.62 After DOCTYPE system keyword state
/// </summary>
/// <param name="c">The next input character.</param>
/// <param name="doctype">The current doctype token.</param>
/// <returns>The emitted token.</returns>
XmlToken DoctypeSystem(Char c, XmlDoctypeToken doctype)
{
if (c.IsSpaceCharacter())
{
while (c.IsSpaceCharacter())
{
c = _src.Next;
}
if (c == Specification.DQ || c == Specification.SQ)
{
doctype.SystemIdentifier = String.Empty;
return(DoctypeSystemIdentifierValue(_src.Next, c, doctype));
}
}
throw Errors.Xml(ErrorCode.DoctypeInvalid);
}
/// <summary>
/// See 8.2.4.64 DOCTYPE system identifier (double-quoted) state
/// </summary>
/// <param name="c">The next input character.</param>
/// <param name="q">The quote character.</param>
/// <param name="doctype">The current doctype token.</param>
/// <returns>The emitted token.</returns>
XmlToken DoctypeSystemIdentifierValue(Char c, Char q, XmlDoctypeToken doctype)
{
while (c != q)
{
if (c == Specification.EOF)
{
throw Errors.Xml(ErrorCode.EOF);
}
_stringBuffer.Append(c);
c = _src.Next;
}
doctype.SystemIdentifier = _stringBuffer.ToString();
_stringBuffer.Clear();
return(DoctypeSystemIdentifierAfter(_src.Next, doctype));
}
/// <summary>
/// See 8.2.4.66 After DOCTYPE system identifier state
/// </summary>
/// <param name="c">The next input character.</param>
/// <param name="doctype">The current doctype token.</param>
/// <returns>The emitted token.</returns>
XmlToken DoctypeSystemIdentifierAfter(Char c, XmlDoctypeToken doctype)
{
while (c.IsSpaceCharacter())
{
c = _src.Next;
}
if (c == Specification.SBO)
{
_src.Advance();
ScanInternalSubset(doctype);
c = _src.Next;
}
return(DoctypeAfter(c, doctype));
}
/// <summary>
/// The doctype finalizer.
/// </summary>
/// <param name="c">The next input character.</param>
/// <param name="doctype">The current doctype token.</param>
/// <returns>The emitted token.</returns>
XmlToken DoctypeAfter(Char c, XmlDoctypeToken doctype)
{
while (c.IsSpaceCharacter())
{
c = _src.Next;
}
if (c == Specification.GT)
{
return(doctype);
}
throw Errors.Xml(ErrorCode.DoctypeInvalid);
}
#endregion
#region Attributes
/// <summary>
/// More http://www.w3.org/TR/REC-xml/#NT-Attribute.
/// </summary>
/// <param name="c">The next input character.</param>
/// <param name="tag">The current tag token.</param>
XmlToken AttributeBeforeName(Char c, XmlTagToken tag)
{
while (c.IsSpaceCharacter())
{
c = _src.Next;
}
if (c == Specification.SOLIDUS)
{
return(TagSelfClosing(_src.Next, tag));
}
else if (c == Specification.GT)
{
return(tag);
}
else if (c == Specification.EOF)
{
throw Errors.Xml(ErrorCode.EOF);
}
if (c.IsXmlNameStart())
{
_stringBuffer.Clear();
_stringBuffer.Append(c);
return(AttributeName(_src.Next, tag));
}
throw Errors.Xml(ErrorCode.XmlInvalidAttribute);
}
/// <summary>
/// More http://www.w3.org/TR/REC-xml/#NT-Attribute.
/// </summary>
/// <param name="c">The next input character.</param>
/// <param name="tag">The current tag token.</param>
XmlToken AttributeName(Char c, XmlTagToken tag)
{
while (c.IsXmlName())
{
_stringBuffer.Append(c);
c = _src.Next;
}
var name = _stringBuffer.ToString();
if (!String.IsNullOrEmpty(tag.GetAttribute(name)))
{
throw Errors.Xml(ErrorCode.XmlUniqueAttribute);
}
tag.AddAttribute(name);
if (c.IsSpaceCharacter())
{
do
{
c = _src.Next;
}while (c.IsSpaceCharacter());
}
if (c == Specification.EQ)
{
return(AttributeBeforeValue(_src.Next, tag));
}
throw Errors.Xml(ErrorCode.XmlInvalidAttribute);
}
/// <summary>
/// More http://www.w3.org/TR/REC-xml/#NT-Attribute.
/// </summary>
/// <param name="c">The next input character.</param>
/// <param name="tag">The current tag token.</param>
XmlToken AttributeBeforeValue(Char c, XmlTagToken tag)
{
while (c.IsSpaceCharacter())
{
c = _src.Next;
}
if (c == Specification.DQ || c == Specification.SQ)
{
_stringBuffer.Clear();
return(AttributeValue(_src.Next, c, tag));
}
throw Errors.Xml(ErrorCode.XmlInvalidAttribute);
}
/// <summary>
/// More http://www.w3.org/TR/REC-xml/#NT-Attribute.
/// </summary>
/// <param name="c">The next input character.</param>
/// <param name="q">The quote character.</param>
/// <param name="tag">The current tag token.</param>
XmlToken AttributeValue(Char c, Char q, XmlTagToken tag)
{
while (c != q)
{
if (c == Specification.EOF)
{
throw Errors.Xml(ErrorCode.EOF);
}
if (c == Specification.AMPERSAND)
{
_stringBuffer.Append(GetEntity(CharacterReference(_src.Next)));
}
else if (c == Specification.LT)
{
throw Errors.Xml(ErrorCode.XmlLtInAttributeValue);
}
else
{
_stringBuffer.Append(c);
}
c = _src.Next;
}
tag.SetAttributeValue(_stringBuffer.ToString());
return(AttributeAfterValue(_src.Next, tag));
}
/// <summary>
/// More http://www.w3.org/TR/REC-xml/#NT-Attribute.
/// </summary>
/// <param name="c">The next input character.</param>
/// <param name="tag">The current tag token.</param>
XmlToken AttributeAfterValue(Char c, XmlTagToken tag)
{
if (c.IsSpaceCharacter())
{
return(AttributeBeforeName(_src.Next, tag));
}
else if (c == Specification.SOLIDUS)
{
return(TagSelfClosing(_src.Next, tag));
}
else if (c == Specification.GT)
{
return(tag);
}
throw Errors.Xml(ErrorCode.XmlInvalidAttribute);
}
#endregion
#region Processing Instruction
/// <summary>
/// More http://www.w3.org/TR/REC-xml/#sec-pi.
/// </summary>
/// <param name="c">The next input character.</param>
XmlToken ProcessingStart(Char c)
{
if (c.IsXmlNameStart())
{
_stringBuffer.Clear();
_stringBuffer.Append(c);
return(ProcessingTarget(_src.Next, XmlToken.Processing()));
}
throw Errors.Xml(ErrorCode.XmlInvalidPI);
}
/// <summary>
/// More http://www.w3.org/TR/REC-xml/#sec-pi.
/// </summary>
/// <param name="c">The next input character.</param>
/// <param name="pi">The processing instruction token.</param>
XmlToken ProcessingTarget(Char c, XmlPIToken pi)
{
while (c.IsXmlName())
{
_stringBuffer.Append(c);
c = _src.Next;
}
pi.Target = _stringBuffer.ToString();
_stringBuffer.Clear();
if (String.Compare(pi.Target, Tags.XML, StringComparison.OrdinalIgnoreCase) == 0)
{
throw Errors.Xml(ErrorCode.XmlInvalidPI);
}
if (c == Specification.QM)
{
c = _src.Next;
if (c == Specification.GT)
{
return(pi);
}
}
else if (c.IsSpaceCharacter())
{
return(ProcessingContent(_src.Next, pi));
}
throw Errors.Xml(ErrorCode.XmlInvalidPI);
}
/// <summary>
/// More http://www.w3.org/TR/REC-xml/#sec-pi.
/// </summary>
/// <param name="c">The next input character.</param>
/// <param name="pi">The processing instruction token.</param>
XmlToken ProcessingContent(Char c, XmlPIToken pi)
{
while (c != Specification.EOF)
{
if (c == Specification.QM)
{
c = _src.Next;
if (c == Specification.GT)
{
pi.Content = _stringBuffer.ToString();
return(pi);
}
_stringBuffer.Append(Specification.QM);
}
else
{
_stringBuffer.Append(c);
c = _src.Next;
}
}
throw Errors.Xml(ErrorCode.EOF);
}
#endregion
#region Comments
/// <summary>
/// More http://www.w3.org/TR/REC-xml/#sec-comments.
/// </summary>
/// <param name="c">The next input character.</param>
XmlToken CommentStart(Char c)
{
_stringBuffer.Clear();
return(Comment(c));
}
/// <summary>
/// More http://www.w3.org/TR/REC-xml/#sec-comments.
/// </summary>
/// <param name="c">The next input character.</param>
XmlToken Comment(Char c)
{
while (c.IsXmlChar())
{
if (c == Specification.MINUS)
{
return(CommentDash(_src.Next));
}
_stringBuffer.Append(c);
c = _src.Next;
}
throw Errors.Xml(ErrorCode.XmlInvalidComment);
}
/// <summary>
/// More http://www.w3.org/TR/REC-xml/#sec-comments.
/// </summary>
/// <param name="c">The next input character.</param>
XmlToken CommentDash(Char c)
{
if (c == Specification.MINUS)
{
return(CommentEnd(_src.Next));
}
return(Comment(c));
}
/// <summary>
/// More http://www.w3.org/TR/REC-xml/#sec-comments.
/// </summary>
/// <param name="c">The next input character.</param>
XmlToken CommentEnd(Char c)
{
if (c == Specification.GT)
{
return(XmlToken.Comment(_stringBuffer.ToString()));
}
throw Errors.Xml(ErrorCode.XmlInvalidComment);
}
#endregion
#region Helpers
/// <summary>
/// Scans the internal subset, i.e. the DTD in [] of the current source.
/// </summary>
/// <param name="doctype">The doctype which contains the subset.</param>
void ScanInternalSubset(XmlDoctypeToken doctype)
{
var dtd = new DtdParser(_dtd, _src);
dtd.IsInternal = true;
dtd.ErrorOccurred += (s, e) => RaiseErrorOccurred(s, e);
dtd.Parse();
doctype.InternalSubset = dtd.Result.Text;
}
#endregion
}
}