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Introduce AbstractPos

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This makes the position object used in exceptions abstract, with a
method getSource() to get the source code of the file in which the
error originated. This is needed for lazy trees because source files
don't necessarily exist in the filesystem, and we don't want to make
libutil depend on the InputAccessor type in libfetcher.
This commit is contained in:
Eelco Dolstra 2022-12-13 00:48:04 +01:00
parent edb54c62e6
commit b3fdab28a2
16 changed files with 231 additions and 279 deletions
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6
src/nix-env/nix-env.cc
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@ -647,7 +647,7 @@ static void upgradeDerivations(Globals & globals,
} else newElems.push_back(i);
} catch (Error & e) {
e.addTrace(std::nullopt, "while trying to find an upgrade for '%s'", i.queryName());
e.addTrace(nullptr, "while trying to find an upgrade for '%s'", i.queryName());
throw;
}
}
@ -958,7 +958,7 @@ static void queryJSON(Globals & globals, std::vector<DrvInfo> & elems, bool prin
} catch (AssertionError & e) {
printMsg(lvlTalkative, "skipping derivation named '%1%' which gives an assertion failure", i.queryName());
} catch (Error & e) {
e.addTrace(std::nullopt, "while querying the derivation named '%1%'", i.queryName());
e.addTrace(nullptr, "while querying the derivation named '%1%'", i.queryName());
throw;
}
}
@ -1262,7 +1262,7 @@ static void opQuery(Globals & globals, Strings opFlags, Strings opArgs)
} catch (AssertionError & e) {
printMsg(lvlTalkative, "skipping derivation named '%1%' which gives an assertion failure", i.queryName());
} catch (Error & e) {
e.addTrace(std::nullopt, "while querying the derivation named '%1%'", i.queryName());
e.addTrace(nullptr, "while querying the derivation named '%1%'", i.queryName());
throw;
}
}