lix/src/nix/fmt.cc
John Ericson c998e0172f Move value-only methods to InstallableValue
These methods would previously fail on the other `Installable`s, so
moving them to this class is more correct as to where they actually
work.

Additionally, a `InstallableValueCommand` is created to make it easier
(or rather no worse than before) to write commands that just work on
`InstallableValue`s.

Besides being a cleanup to avoid failing default methods, this gets us
closer to https://github.com/NixOS/rfcs/pull/134.
2023-03-16 20:06:46 -04:00

57 lines
1.5 KiB
C++

#include "command.hh"
#include "installable-value.hh"
#include "run.hh"
using namespace nix;
struct CmdFmt : SourceExprCommand {
std::vector<std::string> args;
CmdFmt() { expectArgs({.label = "args", .handler = {&args}}); }
std::string description() override {
return "reformat your code in the standard style";
}
std::string doc() override {
return
#include "fmt.md"
;
}
Category category() override { return catSecondary; }
Strings getDefaultFlakeAttrPaths() override {
return Strings{"formatter." + settings.thisSystem.get()};
}
Strings getDefaultFlakeAttrPathPrefixes() override { return Strings{}; }
void run(ref<Store> store) override
{
auto evalState = getEvalState();
auto evalStore = getEvalStore();
auto installable_ = parseInstallable(store, ".");
auto & installable = InstallableValue::require(*installable_);
auto app = installable.toApp(*evalState).resolve(evalStore, store);
Strings programArgs{app.program};
// Propagate arguments from the CLI
if (args.empty()) {
// Format the current flake out of the box
programArgs.push_back(".");
} else {
// User wants more power, let them decide which paths to include/exclude
for (auto &i : args) {
programArgs.push_back(i);
}
}
runProgramInStore(store, app.program, programArgs);
};
};
static auto r2 = registerCommand<CmdFmt>("fmt");