public override Symbol VisitRightDownSearch([NotNull] PageInterpreterParser.RightDownSearchContext context)
{
var maxSteps = int.Parse(context.Steps.Text);
var results = new List <Tuple <Direction, TraversalResult> >();
var currentPageTraverser = pageTraverser;
var rightPageTraverser = (PageTraverser)pageTraverser.Clone();
var downPageTraverser = (PageTraverser)pageTraverser.Clone();
results.Add(Tuple.Create(Direction.Right, rightPageTraverser.Traverse(Direction.Right, maxSteps)));
results.Add(Tuple.Create(Direction.Down, downPageTraverser.Traverse(Direction.Down, maxSteps)));
results = results.Where(x => x.Item2 != null && x.Item2.Steps < maxSteps).OrderBy(x => x.Item2.Steps).ToList();
foreach (var result in results)
{
try
{
pageTraverser = result.Item1 == Direction.Right ? rightPageTraverser : downPageTraverser;
base.VisitRightDownSearch(context);
return(new Symbol(SymbolType.Success));
}
catch { }
}
throw new ParseCanceledException();
}
public override Symbol VisitPattern([NotNull] PageInterpreterParser.PatternContext context)
{
var onlyFirstCaptured = context.Any() == null ? true : false;
var subsets = context?.subset()?.Accept(this)?.GetValue <Dictionary <SubsetPart, int> >();
for
(
int x = page.Contents.GetLength(0) - calculateSubsetOnPage(subsets, SubsetPart.Right);
x < calculateSubsetOnPage(subsets, SubsetPart.Left);
x++
)
{
for
(
int y = page.Contents.GetLength(1) - calculateSubsetOnPage(subsets, SubsetPart.Bottom);
y < calculateSubsetOnPage(subsets, SubsetPart.Top);
y++
)
{
if (page.Contents[x, y] == null || page.Contents[x, y].Count == 0)
{
continue;
}
pageTraverser = new PageTraverser(page, new PageIndex(x, y));
currentPatternResult = new PatternResult();
try
{
base.VisitPattern(context);
if (currentPatternResult != null)
{
foreach (var item in currentPatternResult.Result)
{
Result.AddResult(queryLabel, item.Key, item.Value);
}
}
if (onlyFirstCaptured)
{
x = page.Contents.GetLength(0);
break;
}
}
catch (ParseCanceledException)
{
currentPatternResult = null;
}
}
}
return(new Symbol(SymbolType.Success));
}
