From 1d61e473c88568fae7ef5edebc77acd53e4126f9 Mon Sep 17 00:00:00 2001
From: Eelco Dolstra <e.dolstra@tudelft.nl>
Date: Fri, 10 Oct 2003 15:25:21 +0000
Subject: * New query `nix --query --predecessors' to print the predecessors of
   a Nix expression.

---
 src/store.cc | 8 ++++++++
 1 file changed, 8 insertions(+)

(limited to 'src/store.cc')

diff --git a/src/store.cc b/src/store.cc
index 69532071310f..3e755a0d1a9a 100644
--- a/src/store.cc
+++ b/src/store.cc
@@ -104,6 +104,14 @@ void registerSuccessor(const Transaction & txn,
 }
 
 
+Paths queryPredecessors(const Path & sucPath)
+{
+    Paths revs;
+    nixDB.queryStrings(noTxn, dbSuccessorsRev, sucPath, revs);
+    return revs;
+}
+
+
 void registerSubstitute(const Path & srcPath, const Path & subPath)
 {
     Transaction txn(nixDB);
-- 
cgit 1.4.1