/// <summary>
/// Initialises a new element declaration instance.
/// </summary>
/// <param name="name">The name of the element.</param>
/// <param name="sto">Whether the start tag is optional.</param>
/// <param name="eto">Whether the end tag is optional.</param>
/// <param name="cm">The <see cref="ContentModel"/> of the element.</param>
/// <param name="inclusions"></param>
/// <param name="exclusions"></param>
public ElementDecl( string name, bool sto, bool eto, ContentModel cm, string[] inclusions, string[] exclusions )
{
Name = name;
StartTagOptional = sto;
EndTagOptional = eto;
ContentModel = cm;
_inclusions = inclusions;
_exclusions = exclusions;
}
void ParseModel( char cmt, ContentModel cm )
{
// Called when part of the model is made up of the contents of a parameter entity
var depth = cm.CurrentDepth;
var ch = _current.SkipWhitespace();
while( ch != cmt || cm.CurrentDepth > depth ) // the entity must terminate while inside the content model.
{
if( ch == Entity.EOF ) {
_current.Error( "Content Model was not closed" );
}
switch( ch ) {
case '%':
var e = ParseParameterEntity( Cmterm );
PushEntity( _current.ResolvedUri, e );
ParseModel( Entity.EOF, cm );
PopEntity();
ch = _current.SkipWhitespace();
break;
case '(':
cm.PushGroup();
_current.ReadChar();// consume '('
ch = _current.SkipWhitespace();
break;
case ')':
ch = _current.ReadChar();// consume ')'
if( Occurrences.Contains( ch ) ) {
cm.AddOccurrence( ch );
_current.ReadChar();
}
if( cm.PopGroup() < depth ) {
_current.Error( "Parameter entity cannot close a paren outside it's own scope" );
}
ch = _current.SkipWhitespace();
break;
case '&':
case '|':
case ',':
cm.AddConnector( ch );
_current.ReadChar(); // skip connector
ch = _current.SkipWhitespace();
break;
default:
string token;
if( ch == '#' ) {
_current.ReadChar();
token = "#" + _current.ScanToken( _sb, Cmterm, true ); // since '#' is not a valid name character.
}
else {
token = _current.ScanToken( _sb, Cmterm, true );
}
token = token.ToUpperInvariant();
ch = _current.Lastchar;
if( Occurrences.Contains( ch ) ) {
cm.PushGroup();
cm.AddSymbol( token );
cm.AddOccurrence( ch );
cm.PopGroup();
_current.ReadChar(); // skip connector
ch = _current.SkipWhitespace();
}
else {
cm.AddSymbol( token );
ch = _current.SkipWhitespace();
}
break;
}
}
}
private ContentModel ParseContentModel( char ch )
{
var cm = new ContentModel();
switch( ch ) {
case '(':
_current.ReadChar();
ParseModel( ')', cm );
ch = _current.ReadChar();
if( Occurrences.Contains( ch ) ) {
cm.AddOccurrence( ch );
_current.ReadChar();
}
break;
case '%': {
var e = ParseParameterEntity( Dcterm );
PushEntity( _current.ResolvedUri, e );
cm = ParseContentModel( _current.Lastchar );
PopEntity(); // bugbug should be at EOF.
}
break;
default: {
var dc = ScanName( Dcterm );
cm.SetDeclaredContent( dc );
}
break;
}
return cm;
}
