/// <summary>
/// Attribute objects are reused during parsing
/// to reduce memory allocations,
/// hence the Reset method.
/// </summary>
public void Reset(string name, string value, char quoteChar)
{
_name = name;
_literalValue = value;
_quoteChar = quoteChar;
_dtdType = null;
}
private void ParseAttributeType(char ch, AttributeDefinition attr)
{
if (ch == '%')
{
Entity e = ParseParameterEntity(_whiteSpace);
PushEntity(_current.ResolvedUri, e);
ParseAttributeType(_current.LastChar, attr);
PopEntity();
ch = _current.LastChar;
return;
}
if (ch == '(')
{
attr.SetEnumeratedType(ParseNameGroup(ch, false), AttributeType.Enumeration);
}
else
{
string token = ScanName(_whiteSpace);
if (String.Compare(token, "NOTATION", true, CultureInfo.InvariantCulture) == 0)
{
ch = _current.SkipWhitespace();
if (ch != '(')
throw Error.ExpectingNameGroup(ch);
attr.SetEnumeratedType(ParseNameGroup(ch, true), AttributeType.Notation);
}
else
attr.SetType(token);
}
}
private void ParseAttributeDefault(char ch, AttributeDefinition attr)
{
if (ch == '%')
{
Entity e = ParseParameterEntity(SgmlDtd._whiteSpace);
PushEntity(_current.ResolvedUri, e);
ParseAttributeDefault(_current.LastChar, attr);
PopEntity();
ch = _current.LastChar;
return;
}
bool hasDefault = true;
if (ch == '#')
{
_current.ReadChar();
string token = _current.ScanToken(_builder, _whiteSpace, true);
hasDefault = attr.SetPresence(token);
ch = _current.SkipWhitespace();
}
if (hasDefault)
{
if (ch == '\'' || ch == '"')
{
string lit = _current.ScanLiteral(_builder, ch);
attr.Default = lit;
ch = _current.SkipWhitespace();
}
else
{
string name = _current.ScanToken(_builder, _whiteSpace, false);
name = name.ToUpper(CultureInfo.InvariantCulture);
attr.Default = name;
ch = _current.SkipWhitespace();
}
}
}
private AttributeDefinition ParseAttributeDefinition(char ch)
{
ch = _current.SkipWhitespace();
string name = ScanName(_whiteSpace)
.ToUpper(CultureInfo.InvariantCulture);
AttributeDefinition attr = new AttributeDefinition(name);
ch = _current.SkipWhitespace();
if (ch == '-')
ch = ParseDeclarationComments();
ParseAttributeType(ch, attr);
ch = _current.SkipWhitespace();
if (ch == '-')
ch = ParseDeclarationComments();
ParseAttributeDefault(ch, attr);
ch = _current.SkipWhitespace();
if (ch == '-')
ch = ParseDeclarationComments();
return attr;
}
