- (void)reloadLineIndexes {

	NSString *diffString = [[self textStorage] string];

	if (diffString.length < 1) {
		self.highestNewFileLineNumber = 0;
		self.lineIndexes = nil;
		return;
	}

	NSLayoutManager *layoutManager = [self layoutManager];
	NSTextContainer *textContainer = [self textContainer];
	NSRect textRect = [layoutManager boundingRectForGlyphRange:NSMakeRange(0, NSUIntegerMax) inTextContainer:textContainer];

	NSString *currentLine = nil;
	NSUInteger currentIndex = 0;
	NSUInteger newFileLineIndex = 0;
	BOOL isContinuation = NO;

	NSRect lineBoundingRect = self.frame;
	lineBoundingRect.size.height = kTextBoundingRectHeight;

	NSMutableArray *mutableLineIndexes = [NSMutableArray arrayWithCapacity:(textRect.size.height / kTextBoundingRectHeight)];

	while (currentIndex * kTextBoundingRectHeight < NSMaxY(textRect)) {

		NSRange glyphRange = [layoutManager glyphRangeForBoundingRect:lineBoundingRect inTextContainer:textContainer];
		NSRange characterRange = [layoutManager characterRangeForGlyphRange:glyphRange actualGlyphRange:NULL];

		GHDiffLineIndexSet *lineIndexSet = [GHDiffLineIndexSet lineIndexSet];
		lineIndexSet.textAttributes = self.lineNumberTextAttributes;

		currentLine = [diffString substringWithRange:characterRange];

		if ([currentLine isFileMarker]) {
			lineIndexSet.lineType = GHDiffLineTypeFileMarker;
		}

		else if ([currentLine isChangeSetMarker]) {
			newFileLineIndex = [currentLine newFileChangeSetMarkerIndex] - 1;
			lineIndexSet.newFileLineIndex = newFileLineIndex;
			lineIndexSet.lineType = GHDiffLineTypeChangeSetMarker;
		}

		else if ([currentLine isAddition]) {
			newFileLineIndex ++;
			lineIndexSet.newFileLineIndex = newFileLineIndex;
			lineIndexSet.lineType = GHDiffLineTypeAddition;
		}

		else if ([currentLine isDeletion]) {
			lineIndexSet.lineType = GHDiffLineTypeDeletion;
		}

		else if (isContinuation) {
			lineIndexSet.lineType = GHDiffLineTypeContinuation;
		}

		else {
			newFileLineIndex ++;
			lineIndexSet.newFileLineIndex = newFileLineIndex;
			lineIndexSet.lineType = GHDiffLineTypePreExistingLine;
		}

		if (newFileLineIndex != NSUIntegerMax && newFileLineIndex > self.highestNewFileLineNumber) {

			self.highestNewFileLineNumber = newFileLineIndex;
		}

		currentIndex ++;
		lineIndexSet.realLineIndex = currentIndex;
		lineIndexSet.lineRect = lineBoundingRect;
		isContinuation = [currentLine hasNewlineTerminator] ? NO : YES;
		lineIndexSet.hasNewlineTerminator = isContinuation;

		[mutableLineIndexes addObject:lineIndexSet];
		lineBoundingRect.origin.y += kTextBoundingRectHeight;
	}

	self.lineIndexes = mutableLineIndexes;
}