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refact: Extract derivationToValue

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This commit is contained in:
Robert Hensing 2024-10-30 01:04:23 +01:00
parent 5f691206ba
commit 760be5fe1e
1 changed files with 41 additions and 27 deletions
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68
src/libexpr/primops.cc
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@ -178,6 +178,46 @@ static void mkOutputString(
o.second.path(*state.store, Derivation::nameFromPath(drvPath), o.first));
}
/**
* `import` will parse a derivation when it imports a `.drv` file from the store.
*
* @param state The evaluation state.
* @param pos The position of the `import` call.
* @param path The path to the `.drv` to import.
* @param storePath The path to the `.drv` to import.
* @param v Return value
*/
void derivationToValue(EvalState & state, const PosIdx pos, const SourcePath & path, const StorePath & storePath, Value & v) {
auto path2 = path.path.abs();
Derivation drv = state.store->readDerivation(storePath);
auto attrs = state.buildBindings(3 + drv.outputs.size());
attrs.alloc(state.sDrvPath).mkString(path2, {
NixStringContextElem::DrvDeep { .drvPath = storePath },
});
attrs.alloc(state.sName).mkString(drv.env["name"]);
auto list = state.buildList(drv.outputs.size());
for (const auto & [i, o] : enumerate(drv.outputs)) {
mkOutputString(state, attrs, storePath, o);
(list[i] = state.allocValue())->mkString(o.first);
}
attrs.alloc(state.sOutputs).mkList(list);
auto w = state.allocValue();
w->mkAttrs(attrs);
if (!state.vImportedDrvToDerivation) {
state.vImportedDrvToDerivation = allocRootValue(state.allocValue());
state.eval(state.parseExprFromString(
#include "imported-drv-to-derivation.nix.gen.hh"
, state.rootPath(CanonPath::root)), **state.vImportedDrvToDerivation);
}
state.forceFunction(**state.vImportedDrvToDerivation, pos, "while evaluating imported-drv-to-derivation.nix.gen.hh");
v.mkApp(*state.vImportedDrvToDerivation, w);
state.forceAttrs(v, pos, "while calling imported-drv-to-derivation.nix.gen.hh");
}
/**
* Import a Nix file with an alternate base scope, as `builtins.scopedImport` does.
*
@ -228,33 +268,7 @@ static void import(EvalState & state, const PosIdx pos, Value & vPath, Value * v
};
if (auto storePath = isValidDerivationInStore()) {
Derivation drv = state.store->readDerivation(*storePath);
auto attrs = state.buildBindings(3 + drv.outputs.size());
attrs.alloc(state.sDrvPath).mkString(path2, {
NixStringContextElem::DrvDeep { .drvPath = *storePath },
});
attrs.alloc(state.sName).mkString(drv.env["name"]);
auto list = state.buildList(drv.outputs.size());
for (const auto & [i, o] : enumerate(drv.outputs)) {
mkOutputString(state, attrs, *storePath, o);
(list[i] = state.allocValue())->mkString(o.first);
}
attrs.alloc(state.sOutputs).mkList(list);
auto w = state.allocValue();
w->mkAttrs(attrs);
if (!state.vImportedDrvToDerivation) {
state.vImportedDrvToDerivation = allocRootValue(state.allocValue());
state.eval(state.parseExprFromString(
#include "imported-drv-to-derivation.nix.gen.hh"
, state.rootPath(CanonPath::root)), **state.vImportedDrvToDerivation);
}
state.forceFunction(**state.vImportedDrvToDerivation, pos, "while evaluating imported-drv-to-derivation.nix.gen.hh");
v.mkApp(*state.vImportedDrvToDerivation, w);
state.forceAttrs(v, pos, "while calling imported-drv-to-derivation.nix.gen.hh");
derivationToValue(state, pos, path, *storePath, v);
}
else {