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Clean up ValidPathInfo::isContentAddressed with std::visit

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This commit is contained in:
John Ericson 2020-06-02 17:04:21 +00:00
parent 25e61812f3
commit a33270ce1d
2 changed files with 24 additions and 24 deletions
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1
src/libstore/file-hash.cc
View file

@ -24,6 +24,7 @@ std::string makeFixedOutputCA(FileIngestionMethod method, const Hash & hash)
+ hash.to_string();
}
// FIXME Put this somewhere?
template<class... Ts> struct overloaded : Ts... { using Ts::operator()...; };
template<class... Ts> overloaded(Ts...) -> overloaded<Ts...>;

47
src/libstore/store-api.cc
View file

@ -753,36 +753,35 @@ void ValidPathInfo::sign(const Store & store, const SecretKey & secretKey)
sigs.insert(secretKey.signDetached(fingerprint(store)));
}
// FIXME Put this somewhere?
template<class... Ts> struct overloaded : Ts... { using Ts::operator()...; };
template<class... Ts> overloaded(Ts...) -> overloaded<Ts...>;
bool ValidPathInfo::isContentAddressed(const Store & store) const
{
auto warn = [&]() {
printError("warning: path '%s' claims to be content-addressed but isn't", store.printStorePath(path));
};
if (! ca) return false;
if (! ca) {}
else if (auto p = std::get_if<TextHash>(&*ca)) {
if (store.makeTextPath(path.name(), p->hash, references) == path)
return true;
else
warn();
}
else if (auto p = std::get_if<FileSystemHash>(&*ca)) {
auto refs = cloneStorePathSet(references);
bool hasSelfReference = false;
if (refs.count(path)) {
hasSelfReference = true;
refs.erase(path);
auto caPath = std::visit(overloaded {
[&](TextHash th) {
return store.makeTextPath(path.name(), th.hash, references);
},
[&](FileSystemHash fsh) {
auto refs = cloneStorePathSet(references);
bool hasSelfReference = false;
if (refs.count(path)) {
hasSelfReference = true;
refs.erase(path);
}
return store.makeFixedOutputPath(fsh.method, fsh.hash, path.name(), refs, hasSelfReference);
}
if (store.makeFixedOutputPath(p->method, p->hash, path.name(), refs, hasSelfReference) == path)
return true;
else
warn();
}
}, *ca);
return false;
bool res = caPath == path;
if (!res)
printError("warning: path '%s' claims to be content-addressed but isn't", store.printStorePath(path));
return res;
}