private static bool AllAreUnnamedEquivalents(IProductionRuleItem item, ref IProductionRuleItem rootItem)
{
if (item is IProductionRuleGroupItem)
{
return(AllAreUnnamedEquivalents((IProductionRuleSeries)item, ref rootItem));
}
else
{
if (rootItem == null)
{
rootItem = item;
return(rootItem.Name.IsEmptyOrNull());
}
else if (item is ILiteralCharReferenceProductionRuleItem ||
item is ILiteralStringReferenceProductionRuleItem)
{
return(item.Name.IsEmptyOrNull() &&
rootItem is ILiteralCharReferenceProductionRuleItem ||
rootItem is ILiteralStringReferenceProductionRuleItem);
}
return(item.GetType() == rootItem.GetType() && item.Name.IsEmptyOrNull());
}
}
public static IProductionRuleItem FinalLink(this IProductionRuleItem ruleItem, IOilexerGrammarProductionRuleEntry currentEntry, OilexerGrammarFile file, ICompilerErrorCollection errors)
{
if (ruleItem.NeedsFinalLinking())
{
if (ruleItem is IProductionRuleGroupItem)
{
return(((IProductionRuleGroupItem)(ruleItem)).FinalLink(currentEntry, file, errors));
}
else if (ruleItem is ISoftReferenceProductionRuleItem)
{
return(((ISoftReferenceProductionRuleItem)(ruleItem)).FinalLink(currentEntry, file, errors));
}
else
{
errors.SourceError(OilexerGrammarCore.CompilerErrors.UnexpectedUndefinedEntry, new LineColumnPair(ruleItem.Line, ruleItem.Column), LineColumnPair.Zero, new Uri(currentEntry.FileName, UriKind.RelativeOrAbsolute), ruleItem.GetType().Name);
return(null);
}
}
else
{
return(ruleItem);
}
}
public static IProductionRuleItem Deliteralize(this IProductionRuleItem ruleItem, IOilexerGrammarProductionRuleEntry currentEntry, IList <IOilexerGrammarTokenEntry> availableStock, OilexerGrammarFile file, ICompilerErrorCollection errors)
{
if (ruleItem.NeedsDeliteralized())
{
if (ruleItem is IProductionRuleGroupItem)
{
return(((IProductionRuleGroupItem)(ruleItem)).Deliteralize(currentEntry, availableStock, file, errors));
}
else if (ruleItem is ILiteralProductionRuleItem)
{
return(((ILiteralProductionRuleItem)(ruleItem)).Deliteralize(currentEntry, availableStock, file, errors));
}
else
{
errors.SourceError(OilexerGrammarCore.CompilerErrors.UnexpectedLiteralEntry, new LineColumnPair(ruleItem.Line, ruleItem.Column), LineColumnPair.Zero, new Uri(currentEntry.FileName, UriKind.RelativeOrAbsolute), ruleItem.GetType().Name);
return(null);
}
}
else
{
return(ruleItem);
}
}
