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Use a struct not std::pair for SearchPathElem

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I got very confused trying to keep all the `first` and `second` straight
reading the code, *especially* as there is also another `(boolean,
string)` pair type also being used.

Named fields is much better.

There are other cleanups that we can do (for example, the existing
TODO), but we can do them later. Doing them now would just make this
harder to review.
This commit is contained in:
John Ericson 2023-06-23 12:01:10 -04:00
parent fd4f03b8fd
commit 484290a9e0
3 changed files with 30 additions and 20 deletions
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9
src/libexpr/primops.cc
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@ -1656,7 +1656,10 @@ static void prim_findFile(EvalState & state, const PosIdx pos, Value * * args, V
}));
}
searchPath.emplace_back(prefix, path);
searchPath.emplace_back(SearchPathElem {
.prefix = prefix,
.path = path,
});
}
auto path = state.forceStringNoCtx(*args[1], pos, "while evaluating the second argument passed to builtins.findFile");
@ -4129,8 +4132,8 @@ void EvalState::createBaseEnv()
int n = 0;
for (auto & i : searchPath) {
auto attrs = buildBindings(2);
attrs.alloc("path").mkString(i.second);
attrs.alloc("prefix").mkString(i.first);
attrs.alloc("path").mkString(i.path);
attrs.alloc("prefix").mkString(i.prefix);
(v.listElems()[n++] = allocValue())->mkAttrs(attrs);
}
addConstant("__nixPath", v);