From 6003f6ac5f0ed9097571fd69a170d5cd33aeac28 Mon Sep 17 00:00:00 2001
From: IntMatrix <IntMatrix>
Date: Wed, 19 Feb 2020 11:01:32 +0200
Subject: [PATCH] Avoid division by zero

---
 .../IBPCollectionCompositionalLayoutSolver.m             | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/Sources/IBPCollectionViewCompositionalLayout/IBPCollectionCompositionalLayoutSolver.m b/Sources/IBPCollectionViewCompositionalLayout/IBPCollectionCompositionalLayoutSolver.m
index 9c2e026..eac5f18 100644
--- a/Sources/IBPCollectionViewCompositionalLayout/IBPCollectionCompositionalLayoutSolver.m
+++ b/Sources/IBPCollectionViewCompositionalLayout/IBPCollectionCompositionalLayoutSolver.m
@@ -387,7 +387,10 @@ - (void)solveGroup:(IBPNSCollectionLayoutGroup *)group forContainer:(IBPNSCollec
 - (UICollectionViewLayoutAttributes *)layoutAttributesForItemAtIndexPath:(NSIndexPath *)indexPath {
     NSArray<IBPCollectionCompositionalLayoutSolverResult *> *results = self.results;
     NSInteger count = results.count;
-
+    if (count == 0) {
+        return nil;
+    }
+    
     CGFloat interGroupSpacing = self.layoutSection.interGroupSpacing;
     CGPoint offset = CGPointZero;
 
@@ -416,6 +419,10 @@ - (UICollectionViewLayoutAttributes *)layoutAttributesForItemAtIndexPath:(NSInde
 
 - (IBPNSCollectionLayoutItem *)layoutItemAtIndexPath:(NSIndexPath *)indexPath {
     NSArray<IBPCollectionCompositionalLayoutSolverResult *> *results = self.results;
+    if (results.count == 0) {
+        return nil;
+    }
+    
     IBPCollectionCompositionalLayoutSolverResult *result = [results objectAtIndex:indexPath.item % results.count];
     return result.layoutItem;
 }