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Simplify registerInputScheme()

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This commit is contained in:
Eelco Dolstra 2025-05-05 08:35:59 +02:00
parent e7c0906521
commit 93844a5998
1 changed files with 12 additions and 10 deletions
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22
src/libfetchers/fetchers.cc
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@ -12,24 +12,26 @@ namespace nix::fetchers {
using InputSchemeMap = std::map<std::string_view, std::shared_ptr<InputScheme>>;
std::unique_ptr<InputSchemeMap> inputSchemes = nullptr;
static InputSchemeMap & inputSchemes()
{
static InputSchemeMap inputSchemeMap;
return inputSchemeMap;
}
void registerInputScheme(std::shared_ptr<InputScheme> && inputScheme)
{
if (!inputSchemes)
inputSchemes = std::make_unique<InputSchemeMap>();
auto schemeName = inputScheme->schemeName();
if (inputSchemes->count(schemeName) > 0)
if (!inputSchemes().emplace(schemeName, std::move(inputScheme)).second)
throw Error("Input scheme with name %s already registered", schemeName);
inputSchemes->insert_or_assign(schemeName, std::move(inputScheme));
}
nlohmann::json dumpRegisterInputSchemeInfo() {
nlohmann::json dumpRegisterInputSchemeInfo()
{
using nlohmann::json;
auto res = json::object();
for (auto & [name, scheme] : *inputSchemes) {
for (auto & [name, scheme] : inputSchemes()) {
auto & r = res[name] = json::object();
r["allowedAttrs"] = scheme->allowedAttrs();
}
@ -57,7 +59,7 @@ Input Input::fromURL(
const Settings & settings,
const ParsedURL & url, bool requireTree)
{
for (auto & [_, inputScheme] : *inputSchemes) {
for (auto & [_, inputScheme] : inputSchemes()) {
auto res = inputScheme->inputFromURL(settings, url, requireTree);
if (res) {
experimentalFeatureSettings.require(inputScheme->experimentalFeature());
@ -91,8 +93,8 @@ Input Input::fromAttrs(const Settings & settings, Attrs && attrs)
};
std::shared_ptr<InputScheme> inputScheme = ({
auto i = inputSchemes->find(schemeName);
i == inputSchemes->end() ? nullptr : i->second;
auto i = get(inputSchemes(), schemeName);
i ? *i : nullptr;
});
if (!inputScheme) return raw();