public static ExtractFromSource SourceExtractor(
this IParseTree <TokenType, ParserRuleType> mapping)
{
var source = mapping.Rule(ParserRuleType.Source);
if (source == null)
{
// If source is not defined we want the entire source object
return(o => new[] { new SourceMatch(o) });
}
return(new Extractor(
source.Elements
.Cast <IParseTreeRule <TokenType, ParserRuleType> >()
.Select(o => (Func <SourceMatch, IEnumerable <SourceMatch> >)MapNode(o).Extract)
.ToList())
.Extract);
}
public static UpdateTarget TargetUpdater(
this IParseTree <TokenType, ParserRuleType> mapping)
{
var target = mapping.Rule(ParserRuleType.Target);
if (target == null)
{
return(Merging.MergeObjects);
}
NodeUpdaterBase updater = new FinalNodeUpdater(
(IParseTreeRule <TokenType, ParserRuleType>)target.Elements.Last());
for (int i = target.Elements.Count - 2; i >= 0; --i)
{
updater = new NodeUpdater(
(IParseTreeRule <TokenType, ParserRuleType>)target.Elements[i],
updater);
}
return(new Updater(updater).Update);
}
