public void NoSpansOverlap()
{
var result = ParseSampleLesson();
var spans = result.FlattenSpans();
LessonSpan lastSpan = null;
foreach (var span in spans)
{
if (lastSpan != null)
{
var iAfterLast = lastSpan.Content.GetIndexAfter();
if (iAfterLast > span.Content.Index)
{
Assert.Fail("Spans overlap");
}
}
lastSpan = span;
}
}
private static void DecorateSpansWithSkippedText(LessonDocument document)
{
// Decorate the LessonSpans with skipped parts
var spans = document.FlattenSpans();
// Find gaps between the spans
LessonSpan lastSpan = null;
foreach (var span in spans)
{
var nextExpectedIndex = lastSpan != null?lastSpan.Content.GetIndexAfter() : 0;
if (span.Content.Index > nextExpectedIndex)
{
// Get skipped content
var skipLength = span.Content.Index - nextExpectedIndex;
var skipContent = new StringWithIndex(document.Content.Source, nextExpectedIndex, skipLength);
span.SkippedPreText = skipContent;
}
else if (span.Content.Index == nextExpectedIndex)
{
// Blank Skipped
span.SkippedPreText = new StringWithIndex(document.Content.Source, nextExpectedIndex, 0);
}
// TODO: move to testing
else
{
var lastSpanContent = lastSpan.Content;
var skipped = span.SkippedPreText;
var spanContent = span.Content;
throw new ArgumentException("The document is malformed and has overlapping spans");
}
lastSpan = span;
}
}
