internal WikitextParserOptions DefensiveCopy()
{
// This method should be thread-safe when there are concurrent DefensiveCopy calls.
if (_DefensiveCopy != null)
{
return(_DefensiveCopy);
}
var inst = (WikitextParserOptions)MemberwiseClone();
inst._DefensiveCopy = inst;
inst._ParserTags = ParserTags == null || ReferenceEquals(ParserTags, DefaultParserTags)
? DefaultParserTagsSet
: new HashSet <string>(ParserTags, StringComparer.OrdinalIgnoreCase);
inst._SelfClosingOnlyTags = SelfClosingOnlyTags == null || ReferenceEquals(SelfClosingOnlyTags, DefaultSelfClosingOnlyTags)
? DefaultSelfClosingOnlyTagsSet
: new HashSet <string>(SelfClosingOnlyTags, StringComparer.OrdinalIgnoreCase);
if (ImageNamespaceNames == null || ReferenceEquals(ImageNamespaceNames, DefaultImageNamespaceNames))
{
inst._ImageNamespaceNames = DefaultImageNamespaceNamesSet;
inst.ImageNamespaceRegexp = DefaultImageNamespaceNameRegexp;
}
else
{
var collection = ImageNamespaceNames as ICollection <string> ?? ImageNamespaceNames.ToList();
inst.ImageNamespaceRegexp = string.Join("|", collection.Select(Regex.Escape));
inst._ImageNamespaceNames = new HashSet <string>(collection, StringComparer.OrdinalIgnoreCase);
}
if (inst.MagicTemplateNames == null || ReferenceEquals(MagicTemplateNames, DefaultMagicTemplateNames))
{
inst.CaseSensitiveMagicTemplateNamesSet = DefaultCaseSensitiveMagicTemplatesSet;
inst.CaseInsensitiveMagicTemplateNamesSet = DefaultCaseInsensitiveMagicTemplatesSet;
}
else
{
inst.CaseSensitiveMagicTemplateNamesSet = new HashSet <string>();
inst.CaseInsensitiveMagicTemplateNamesSet = new HashSet <string>(StringComparer.OrdinalIgnoreCase);
foreach (var tn in MagicTemplateNames)
{
if (tn.IsCaseSensitive)
{
inst.CaseSensitiveMagicTemplateNamesSet.Add(tn.Name);
}
else
{
inst.CaseInsensitiveMagicTemplateNamesSet.Add(tn.Name);
}
}
}
inst._MagicTemplateNames = null;
_DefensiveCopy = inst;
return(inst);
}
public Wikitext Parse(WikitextParserOptions options, IWikitextParserLogger logger, string wikitext,
CancellationToken cancellationToken)
{
if (wikitext == null)
{
throw new ArgumentNullException(nameof(wikitext));
}
cancellationToken.ThrowIfCancellationRequested();
// Initialize
this.options = options?.DefensiveCopy() ?? WikitextParserOptions.DefaultOptionsCopy;
this.logger = logger;
fulltext = wikitext;
lineNumber = linePosition = 0;
position = 0;
contextStack = new Stack <ParsingContext>();
this.cancellationToken = cancellationToken;
try
{
// Then parse
logger?.NotifyParsingStarted(wikitext);
var root = ParseWikitext();
// State check
if (position < fulltext.Length)
{
throw new InvalidParserStateException(
"Detected unparsed wikitext after parsing. There might be a bug with parser.");
}
if (contextStack.Count > 0)
{
throw new InvalidParserStateException(
"Detected remaining ParsingContext on context stack. There might be a bug with parser.");
}
logger?.NotifyParsingFinished();
return(root);
}
finally
{
// Cleanup
fulltext = null;
contextStack = null;
options = null;
logger = null;
}
}
internal WikitextParserOptions DefensiveCopy()
{
// This method should be thread-safe when there are concurrent DefensiveCopy calls.
if (_DefensiveCopy != null)
{
return(_DefensiveCopy);
}
var inst = (WikitextParserOptions)MemberwiseClone();
inst._DefensiveCopy = inst;
inst._ParserTags = ParserTags == null || ReferenceEquals(ParserTags, DefaultParserTags)
? DefaultParserTagsSet
: new HashSet <string>(ParserTags, StringComparer.OrdinalIgnoreCase);
inst._SelfClosingOnlyTags = SelfClosingOnlyTags == null ||
ReferenceEquals(SelfClosingOnlyTags, DefaultSelfClosingOnlyTags)
? DefaultSelfClosingOnlyTagsSet
: new HashSet <string>(SelfClosingOnlyTags, StringComparer.OrdinalIgnoreCase);
if (inst.MagicTemplateNames == null || ReferenceEquals(MagicTemplateNames, DefaultMagicTemplateNames))
{
inst.CaseSensitiveMagicTemplateNamesSet = DefaultCaseSensitiveMagicTemplatesSet;
inst.CaseInsensitiveMagicTemplateNamesSet = DefaultCaseInsensitiveMagicTemplatesSet;
}
else
{
inst.CaseSensitiveMagicTemplateNamesSet = new HashSet <string>();
inst.CaseInsensitiveMagicTemplateNamesSet = new HashSet <string>(StringComparer.OrdinalIgnoreCase);
foreach (var tn in MagicTemplateNames)
{
if (tn.IsCaseSensitive)
{
inst.CaseSensitiveMagicTemplateNamesSet.Add(tn.Name);
}
else
{
inst.CaseInsensitiveMagicTemplateNamesSet.Add(tn.Name);
}
}
}
inst._MagicTemplateNames = null;
_DefensiveCopy = inst;
return(inst);
}
