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diffLockFiles(): Show 'follows' changes

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This commit is contained in:
Eelco Dolstra 2020-06-11 22:00:58 +02:00
parent 0c62b4ad0f
commit d15c20efd5
1 changed files with 29 additions and 11 deletions
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40
src/libexpr/flake/lockfile.cc
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@ -242,25 +242,43 @@ static void flattenLockFile(
std::shared_ptr<const Node> node,
const InputPath & prefix,
std::unordered_set<std::shared_ptr<const Node>> & done,
std::map<InputPath, std::shared_ptr<const LockedNode>> & res)
std::map<InputPath, Node::Edge> & res)
{
if (!done.insert(node).second) return;
for (auto &[id, input] : node->inputs) {
auto inputPath(prefix);
inputPath.push_back(id);
if (auto child = std::get_if<0>(&input)) {
if (auto lockedInput = std::dynamic_pointer_cast<const LockedNode>(*child))
res.emplace(inputPath, lockedInput);
res.emplace(inputPath, input);
if (auto child = std::get_if<0>(&input))
flattenLockFile(*child, inputPath, done, res);
}
}
}
std::ostream & operator <<(std::ostream & stream, const Node::Edge & edge)
{
if (auto node = std::get_if<0>(&edge))
stream << "'" << (*node)->lockedRef << "'";
else if (auto follows = std::get_if<1>(&edge))
stream << fmt("follows '%s'", printInputPath(*follows));
return stream;
}
static bool equals(const Node::Edge & e1, const Node::Edge & e2)
{
if (auto n1 = std::get_if<0>(&e1))
if (auto n2 = std::get_if<0>(&e2))
return (*n1)->lockedRef == (*n2)->lockedRef;
if (auto f1 = std::get_if<1>(&e1))
if (auto f2 = std::get_if<1>(&e2))
return *f1 == *f2;
return false;
}
std::string diffLockFiles(const LockFile & oldLocks, const LockFile & newLocks)
{
std::unordered_set<std::shared_ptr<const Node>> done;
std::map<InputPath, std::shared_ptr<const LockedNode>> oldFlat, newFlat;
std::map<InputPath, Node::Edge> oldFlat, newFlat;
flattenLockFile(oldLocks.root, {}, done, oldFlat);
done.clear();
flattenLockFile(newLocks.root, {}, done, newFlat);
@ -271,17 +289,17 @@ std::string diffLockFiles(const LockFile & oldLocks, const LockFile & newLocks)
while (i != oldFlat.end() || j != newFlat.end()) {
if (j != newFlat.end() && (i == oldFlat.end() || i->first > j->first)) {
res += fmt("* Added '%s': '%s'\n", printInputPath(j->first), j->second->lockedRef);
res += fmt("* Added '%s': %s\n", printInputPath(j->first), j->second);
++j;
} else if (i != oldFlat.end() && (j == newFlat.end() || i->first < j->first)) {
res += fmt("* Removed '%s'\n", printInputPath(i->first));
++i;
} else {
if (!(i->second->lockedRef == j->second->lockedRef)) {
res += fmt("* Updated '%s': '%s' -> '%s'\n",
if (!equals(i->second, j->second)) {
res += fmt("* Updated '%s': %s -> %s\n",
printInputPath(i->first),
i->second->lockedRef,
j->second->lockedRef);
i->second,
j->second);
}
++i;
++j;