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https://github.com/NixOS/nix
synced 2025-06-25 06:31:14 +02:00
nix-flake: Move primops registration to configureEvalSettings
This commit is contained in:
Robert Hensing
parent
6a192ec0cd
commit
d48101109d
4 changed files with 106 additions and 106 deletions
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@ -56,4 +56,105 @@ PrimOp getFlake(const Settings & settings)
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};
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}
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static void prim_parseFlakeRef(EvalState & state, const PosIdx pos, Value ** args, Value & v)
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{
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std::string flakeRefS(
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state.forceStringNoCtx(*args[0], pos, "while evaluating the argument passed to builtins.parseFlakeRef"));
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auto attrs = nix::parseFlakeRef(state.fetchSettings, flakeRefS, {}, true).toAttrs();
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auto binds = state.buildBindings(attrs.size());
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for (const auto & [key, value] : attrs) {
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auto s = state.symbols.create(key);
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auto & vv = binds.alloc(s);
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std::visit(
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overloaded{
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[&vv](const std::string & value) { vv.mkString(value); },
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[&vv](const uint64_t & value) { vv.mkInt(value); },
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[&vv](const Explicit<bool> & value) { vv.mkBool(value.t); }},
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value);
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}
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v.mkAttrs(binds);
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}
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nix::PrimOp parseFlakeRef({
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.name = "__parseFlakeRef",
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.args = {"flake-ref"},
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.doc = R"(
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Parse a flake reference, and return its exploded form.
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For example:
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```nix
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builtins.parseFlakeRef "github:NixOS/nixpkgs/23.05?dir=lib"
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```
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evaluates to:
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```nix
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{ dir = "lib"; owner = "NixOS"; ref = "23.05"; repo = "nixpkgs"; type = "github"; }
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```
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)",
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.fun = prim_parseFlakeRef,
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.experimentalFeature = Xp::Flakes,
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});
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static void prim_flakeRefToString(EvalState & state, const PosIdx pos, Value ** args, Value & v)
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{
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state.forceAttrs(*args[0], noPos, "while evaluating the argument passed to builtins.flakeRefToString");
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fetchers::Attrs attrs;
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for (const auto & attr : *args[0]->attrs()) {
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auto t = attr.value->type();
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if (t == nInt) {
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auto intValue = attr.value->integer().value;
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if (intValue < 0) {
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state
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.error<EvalError>(
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"negative value given for flake ref attr %1%: %2%", state.symbols[attr.name], intValue)
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.atPos(pos)
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.debugThrow();
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}
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attrs.emplace(state.symbols[attr.name], uint64_t(intValue));
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} else if (t == nBool) {
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attrs.emplace(state.symbols[attr.name], Explicit<bool>{attr.value->boolean()});
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} else if (t == nString) {
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attrs.emplace(state.symbols[attr.name], std::string(attr.value->string_view()));
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} else {
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state
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.error<EvalError>(
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"flake reference attribute sets may only contain integers, Booleans, "
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"and strings, but attribute '%s' is %s",
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state.symbols[attr.name],
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showType(*attr.value))
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.debugThrow();
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}
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}
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auto flakeRef = FlakeRef::fromAttrs(state.fetchSettings, attrs);
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v.mkString(flakeRef.to_string());
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}
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nix::PrimOp flakeRefToString({
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.name = "__flakeRefToString",
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.args = {"attrs"},
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.doc = R"(
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Convert a flake reference from attribute set format to URL format.
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For example:
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```nix
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builtins.flakeRefToString {
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dir = "lib"; owner = "NixOS"; ref = "23.05"; repo = "nixpkgs"; type = "github";
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}
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```
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evaluates to
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```nix
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"github:NixOS/nixpkgs/23.05?dir=lib"
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```
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)",
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.fun = prim_flakeRefToString,
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.experimentalFeature = Xp::Flakes,
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});
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} // namespace nix::flake::primops
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@ -10,4 +10,7 @@ namespace nix::flake::primops {
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*/
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nix::PrimOp getFlake(const Settings & settings);
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extern nix::PrimOp parseFlakeRef;
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extern nix::PrimOp flakeRefToString;
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} // namespace nix::flake
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@ -973,112 +973,6 @@ void callFlake(EvalState & state,
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state.callFunction(*vCallFlake, args, vRes, noPos);
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}
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static void prim_parseFlakeRef(
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EvalState & state,
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const PosIdx pos,
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Value * * args,
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Value & v)
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{
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std::string flakeRefS(state.forceStringNoCtx(*args[0], pos,
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"while evaluating the argument passed to builtins.parseFlakeRef"));
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auto attrs = parseFlakeRef(state.fetchSettings, flakeRefS, {}, true).toAttrs();
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auto binds = state.buildBindings(attrs.size());
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for (const auto & [key, value] : attrs) {
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auto s = state.symbols.create(key);
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auto & vv = binds.alloc(s);
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std::visit(overloaded {
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[&vv](const std::string & value) { vv.mkString(value); },
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[&vv](const uint64_t & value) { vv.mkInt(value); },
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[&vv](const Explicit<bool> & value) { vv.mkBool(value.t); }
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}, value);
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}
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v.mkAttrs(binds);
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}
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static RegisterPrimOp r3({
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.name = "__parseFlakeRef",
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.args = {"flake-ref"},
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.doc = R"(
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Parse a flake reference, and return its exploded form.
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For example:
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```nix
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builtins.parseFlakeRef "github:NixOS/nixpkgs/23.05?dir=lib"
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```
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evaluates to:
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```nix
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{ dir = "lib"; owner = "NixOS"; ref = "23.05"; repo = "nixpkgs"; type = "github"; }
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```
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)",
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.fun = prim_parseFlakeRef,
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.experimentalFeature = Xp::Flakes,
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});
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static void prim_flakeRefToString(
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EvalState & state,
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const PosIdx pos,
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Value * * args,
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Value & v)
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{
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state.forceAttrs(*args[0], noPos,
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"while evaluating the argument passed to builtins.flakeRefToString");
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fetchers::Attrs attrs;
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for (const auto & attr : *args[0]->attrs()) {
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auto t = attr.value->type();
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if (t == nInt) {
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auto intValue = attr.value->integer().value;
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if (intValue < 0) {
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state.error<EvalError>("negative value given for flake ref attr %1%: %2%", state.symbols[attr.name], intValue).atPos(pos).debugThrow();
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}
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attrs.emplace(state.symbols[attr.name], uint64_t(intValue));
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} else if (t == nBool) {
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attrs.emplace(state.symbols[attr.name],
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Explicit<bool> { attr.value->boolean() });
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} else if (t == nString) {
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attrs.emplace(state.symbols[attr.name],
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std::string(attr.value->string_view()));
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} else {
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state.error<EvalError>(
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"flake reference attribute sets may only contain integers, Booleans, "
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"and strings, but attribute '%s' is %s",
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state.symbols[attr.name],
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showType(*attr.value)).debugThrow();
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}
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}
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auto flakeRef = FlakeRef::fromAttrs(state.fetchSettings, attrs);
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v.mkString(flakeRef.to_string());
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}
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static RegisterPrimOp r4({
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.name = "__flakeRefToString",
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.args = {"attrs"},
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.doc = R"(
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Convert a flake reference from attribute set format to URL format.
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For example:
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```nix
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builtins.flakeRefToString {
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dir = "lib"; owner = "NixOS"; ref = "23.05"; repo = "nixpkgs"; type = "github";
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}
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```
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evaluates to
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```nix
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"github:NixOS/nixpkgs/23.05?dir=lib"
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```
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)",
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.fun = prim_flakeRefToString,
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.experimentalFeature = Xp::Flakes,
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});
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}
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std::optional<Fingerprint> LockedFlake::getFingerprint(
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@ -8,6 +8,8 @@ Settings::Settings() {}
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void Settings::configureEvalSettings(nix::EvalSettings & evalSettings)
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{
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evalSettings.addPrimOp(primops::getFlake(*this));
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evalSettings.addPrimOp(primops::parseFlakeRef);
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evalSettings.addPrimOp(primops::flakeRefToString);
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}
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} // namespace nix
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