From 16687d516eeab509302e59d136ad1cb3acc558b0 Mon Sep 17 00:00:00 2001
From: Jaime Lennox <jaimelennoxster@gmail.com>
Date: Sun, 4 Jul 2021 11:34:14 +0100
Subject: [PATCH] fix: stack overflow error when generating hashes

This can happen if a rule ends up depending on itself.

To check for this we simply avoid trying to create a digest for a rule
of the same name as the current one we're working on.

Fixes: #71
---
 src/main/java/com/bazel_diff/TargetHashingClient.java | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/main/java/com/bazel_diff/TargetHashingClient.java b/src/main/java/com/bazel_diff/TargetHashingClient.java
index de0885e..91c17c5 100644
--- a/src/main/java/com/bazel_diff/TargetHashingClient.java
+++ b/src/main/java/com/bazel_diff/TargetHashingClient.java
@@ -89,7 +89,7 @@ private byte[] createDigestForRule(
             digest.update(ruleInput.getBytes());
             BazelRule inputRule = allRulesMap.get(ruleInput);
             byte[] sourceFileDigest = getDigestForSourceTargetName(ruleInput, bazelSourcefileTargets);
-            if (inputRule != null) {
+            if (inputRule != null && !inputRule.getName().equals(rule.getName())) {
                 byte[] ruleInputHash = createDigestForRule(
                         inputRule,
                         allRulesMap,