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#pragma once
#include "installables.hh"
#include "args.hh"
#include "common-eval-args.hh"
#include "path.hh"
#include "flake/lockfile.hh"
#include <optional>
namespace nix {
extern std::string programPath;
class EvalState;
struct Pos;
class Store;
static constexpr Command::Category catSecondary = 100;
static constexpr Command::Category catUtility = 101;
static constexpr Command::Category catNixInstallation = 102;
/* A command that requires a Nix store. */
struct StoreCommand : virtual Command
{
StoreCommand();
void run() override;
ref<Store> getStore();
virtual ref<Store> createStore();
virtual void run(ref<Store>) = 0;
private:
std::shared_ptr<Store> _store;
};
struct EvalCommand : virtual StoreCommand, MixEvalArgs
{
ref<EvalState> getEvalState();
std::shared_ptr<EvalState> evalState;
};
struct MixFlakeOptions : virtual Args
{
flake::LockFlags lockFlags;
MixFlakeOptions();
};
struct SourceExprCommand : virtual Args, EvalCommand, MixFlakeOptions
{
std::optional<Path> file;
std::optional<std::string> expr;
SourceExprCommand();
std::vector<std::shared_ptr<Installable>> parseInstallables(
ref<Store> store, std::vector<std::string> ss);
std::shared_ptr<Installable> parseInstallable(
ref<Store> store, const std::string & installable);
virtual Strings getDefaultFlakeAttrPaths();
virtual Strings getDefaultFlakeAttrPathPrefixes();
};
enum RealiseMode { Build, NoBuild, DryRun };
/* A command that operates on a list of "installables", which can be
store paths, attribute paths, Nix expressions, etc. */
struct InstallablesCommand : virtual Args, SourceExprCommand
{
std::vector<std::shared_ptr<Installable>> installables;
InstallablesCommand()
{
expectArgs("installables", &_installables);
}
void prepare() override;
virtual bool useDefaultInstallables() { return true; }
private:
std::vector<std::string> _installables;
};
/* A command that operates on exactly one "installable" */
struct InstallableCommand : virtual Args, SourceExprCommand
{
std::shared_ptr<Installable> installable;
InstallableCommand()
{
expectArg("installable", &_installable, true);
}
void prepare() override;
private:
std::string _installable{"."};
};
/* A command that operates on zero or more store paths. */
struct StorePathsCommand : public InstallablesCommand
{
private:
bool recursive = false;
bool all = false;
protected:
RealiseMode realiseMode = NoBuild;
public:
StorePathsCommand(bool recursive = false);
using StoreCommand::run;
virtual void run(ref<Store> store, std::vector<StorePath> storePaths) = 0;
void run(ref<Store> store) override;
bool useDefaultInstallables() override { return !all; }
};
/* A command that operates on exactly one store path. */
struct StorePathCommand : public InstallablesCommand
{
using StoreCommand::run;
virtual void run(ref<Store> store, const StorePath & storePath) = 0;
void run(ref<Store> store) override;
};
/* A helper class for registering commands globally. */
struct RegisterCommand
{
static Commands * commands;
RegisterCommand(const std::string & name,
std::function<ref<Command>()> command)
{
if (!commands) commands = new Commands;
commands->emplace(name, command);
}
};
template<class T>
static RegisterCommand registerCommand(const std::string & name)
{
return RegisterCommand(name, [](){ return make_ref<T>(); });
}
Buildables build(ref<Store> store, RealiseMode mode,
std::vector<std::shared_ptr<Installable>> installables);
std::set<StorePath> toStorePaths(ref<Store> store, RealiseMode mode,
std::vector<std::shared_ptr<Installable>> installables);
StorePath toStorePath(ref<Store> store, RealiseMode mode,
std::shared_ptr<Installable> installable);
std::set<StorePath> toDerivations(ref<Store> store,
std::vector<std::shared_ptr<Installable>> installables,
bool useDeriver = false);
/* Helper function to generate args that invoke $EDITOR on
filename:lineno. */
Strings editorFor(const Pos & pos);
struct MixProfile : virtual StoreCommand
{
std::optional<Path> profile;
MixProfile();
/* If 'profile' is set, make it point at 'storePath'. */
void updateProfile(const StorePath & storePath);
/* If 'profile' is set, make it point at the store path produced
by 'buildables'. */
void updateProfile(const Buildables & buildables);
};
struct MixDefaultProfile : MixProfile
{
MixDefaultProfile();
};
struct MixEnvironment : virtual Args {
StringSet keep, unset;
Strings stringsEnv;
std::vector<char*> vectorEnv;
bool ignoreEnvironment;
MixEnvironment();
/* Modify global environ based on ignoreEnvironment, keep, and unset. It's expected that exec will be called before this class goes out of scope, otherwise environ will become invalid. */
void setEnviron();
};
}
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