From 6f5e3326cef2a2049c8f4ea757accafe4fc9d53f Mon Sep 17 00:00:00 2001
From: Eelco Dolstra <e.dolstra@tudelft.nl>
Date: Fri, 30 Dec 2011 15:02:50 +0000
Subject: [PATCH] * Move topoSortPaths() out of gc.cc.

---
 src/libstore/gc.cc   | 36 ------------------------------------
 src/libstore/misc.cc | 36 ++++++++++++++++++++++++++++++++++++
 2 files changed, 36 insertions(+), 36 deletions(-)

diff --git a/src/libstore/gc.cc b/src/libstore/gc.cc
index ec7751133..14c8ba0bf 100644
--- a/src/libstore/gc.cc
+++ b/src/libstore/gc.cc
@@ -371,42 +371,6 @@ static void addAdditionalRoots(StoreAPI & store, PathSet & roots)
 }
 
 
-static void dfsVisit(StoreAPI & store, const PathSet & paths,
-    const Path & path, PathSet & visited, Paths & sorted,
-    PathSet & parents)
-{
-    if (parents.find(path) != parents.end())
-        throw BuildError(format("cycle detected in the references of `%1%'") % path);
-    parents.insert(path);
-    
-    if (visited.find(path) != visited.end()) return;
-    visited.insert(path);
-    
-    PathSet references;
-    if (store.isValidPath(path))
-        store.queryReferences(path, references);
-    
-    foreach (PathSet::iterator, i, references)
-        /* Don't traverse into paths that don't exist.  That can
-           happen due to substitutes for non-existent paths. */
-        if (*i != path && paths.find(*i) != paths.end())
-            dfsVisit(store, paths, *i, visited, sorted, parents);
-
-    sorted.push_front(path);
-    parents.erase(path);
-}
-
-
-Paths topoSortPaths(StoreAPI & store, const PathSet & paths)
-{
-    Paths sorted;
-    PathSet visited, parents;
-    foreach (PathSet::const_iterator, i, paths)
-        dfsVisit(store, paths, *i, visited, sorted, parents);
-    return sorted;
-}
-
-
 struct GCLimitReached { };
 
 
diff --git a/src/libstore/misc.cc b/src/libstore/misc.cc
index d4bbccd11..abe59d162 100644
--- a/src/libstore/misc.cc
+++ b/src/libstore/misc.cc
@@ -97,4 +97,40 @@ void queryMissing(StoreAPI & store, const PathSet & targets,
 }
 
  
+static void dfsVisit(StoreAPI & store, const PathSet & paths,
+    const Path & path, PathSet & visited, Paths & sorted,
+    PathSet & parents)
+{
+    if (parents.find(path) != parents.end())
+        throw BuildError(format("cycle detected in the references of `%1%'") % path);
+    parents.insert(path);
+    
+    if (visited.find(path) != visited.end()) return;
+    visited.insert(path);
+    
+    PathSet references;
+    if (store.isValidPath(path))
+        store.queryReferences(path, references);
+    
+    foreach (PathSet::iterator, i, references)
+        /* Don't traverse into paths that don't exist.  That can
+           happen due to substitutes for non-existent paths. */
+        if (*i != path && paths.find(*i) != paths.end())
+            dfsVisit(store, paths, *i, visited, sorted, parents);
+
+    sorted.push_front(path);
+    parents.erase(path);
+}
+
+
+Paths topoSortPaths(StoreAPI & store, const PathSet & paths)
+{
+    Paths sorted;
+    PathSet visited, parents;
+    foreach (PathSet::const_iterator, i, paths)
+        dfsVisit(store, paths, *i, visited, sorted, parents);
+    return sorted;
+}
+
+
 }