/// <summary>
/// More http://www.w3.org/TR/REC-xml/#NT-Name.
/// </summary>
/// <param name="tag">The current tag token.</param>
/// <returns>The emitted token.</returns>
private XmlToken TagName(XmlTagToken tag)
{
var c = GetNext();
while (c.IsXmlName())
{
StringBuffer.Append(c);
c = GetNext();
}
tag.Name = FlushBuffer();
if (c == Symbols.EndOfFile)
{
throw XmlParseError.EOF.At(GetCurrentPosition());
}
if (c == Symbols.GreaterThan)
{
return(tag);
}
else if (c.IsSpaceCharacter())
{
return(AttributeBeforeName(tag));
}
else if (c == Symbols.Solidus)
{
return(TagSelfClosing(tag));
}
throw XmlParseError.XmlInvalidName.At(GetCurrentPosition());
}
/// <summary>
/// More http://www.w3.org/TR/REC-xml/#NT-Attribute.
/// </summary>
/// <param name="tag">The current tag token.</param>
/// <param name="quote">The quote character.</param>
private XmlToken AttributeValue(XmlTagToken tag, Char quote)
{
var c = GetNext();
while (c != quote)
{
if (c == Symbols.EndOfFile)
{
throw XmlParseError.EOF.At(GetCurrentPosition());
}
if (c == Symbols.LessThan)
{
throw XmlParseError.XmlLtInAttributeValue.At(GetCurrentPosition());
}
if (c == Symbols.Ampersand)
{
StringBuffer.Append(CharacterReference());
}
else
{
StringBuffer.Append(c);
}
c = GetNext();
}
tag.SetAttributeValue(FlushBuffer());
return(AttributeAfterValue(tag));
}
/// <summary>
/// More http://www.w3.org/TR/REC-xml/#NT-Attribute.
/// </summary>
/// <param name="tag">The current tag token.</param>
private XmlToken AttributeName(XmlTagToken tag)
{
var c = GetNext();
while (c.IsXmlName())
{
StringBuffer.Append(c);
c = GetNext();
}
var name = FlushBuffer();
if (!String.IsNullOrEmpty(tag.GetAttribute(name)))
{
throw XmlParseError.XmlUniqueAttribute.At(GetCurrentPosition());
}
tag.AddAttribute(name);
if (c.IsSpaceCharacter())
{
do
{
c = GetNext();
}while (c.IsSpaceCharacter());
}
if (c != Symbols.Equality)
{
throw XmlParseError.XmlInvalidAttribute.At(GetCurrentPosition());
}
return(AttributeBeforeValue(tag));
}
/// <summary>
/// More http://www.w3.org/TR/REC-xml/#NT-Attribute.
/// </summary>
/// <param name="tag">The current tag token.</param>
private XmlToken AttributeBeforeName(XmlTagToken tag)
{
var c = SkipSpaces();
if (c == Symbols.Solidus)
{
return(TagSelfClosing(tag));
}
else if (c == Symbols.GreaterThan)
{
return(tag);
}
if (c == Symbols.EndOfFile)
{
throw XmlParseError.EOF.At(GetCurrentPosition());
}
if (c.IsXmlNameStart())
{
StringBuffer.Append(c);
return(AttributeName(tag));
}
throw XmlParseError.XmlInvalidAttribute.At(GetCurrentPosition());
}
/// <summary>
/// More http://www.w3.org/TR/REC-xml/#NT-Attribute.
/// </summary>
/// <param name="tag">The current tag token.</param>
private XmlToken AttributeBeforeValue(XmlTagToken tag)
{
var c = SkipSpaces();
if (c != Symbols.DoubleQuote && c != Symbols.SingleQuote)
{
throw XmlParseError.XmlInvalidAttribute.At(GetCurrentPosition());
}
return(AttributeValue(tag, c));
}
/// <summary>
/// More http://www.w3.org/TR/REC-xml/#d0e2480.
/// </summary>
/// <param name="tag">The current tag token.</param>
private XmlToken TagSelfClosing(XmlTagToken tag)
{
var c = GetNext();
tag.IsSelfClosing = true;
if (c == Symbols.GreaterThan)
{
return(tag);
}
if (c == Symbols.EndOfFile)
{
throw XmlParseError.EOF.At(GetCurrentPosition());
}
throw XmlParseError.XmlInvalidName.At(GetCurrentPosition());
}
/// <summary>
/// More http://www.w3.org/TR/REC-xml/#NT-Attribute.
/// </summary>
/// <param name="tag">The current tag token.</param>
private XmlToken AttributeAfterValue(XmlTagToken tag)
{
var c = GetNext();
if (c.IsSpaceCharacter())
{
return(AttributeBeforeName(tag));
}
else if (c == Symbols.Solidus)
{
return(TagSelfClosing(tag));
}
else if (c == Symbols.GreaterThan)
{
return(tag);
}
throw XmlParseError.XmlInvalidAttribute.At(GetCurrentPosition());
}
