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string2Int(): Return std::optional

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This commit is contained in:
Eelco Dolstra 2021-01-08 12:22:21 +01:00
parent 29a445840a
commit 6548b89cc4
17 changed files with 82 additions and 69 deletions
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7
src/libmain/shared.hh
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@ -70,10 +70,9 @@ template<class N> N getIntArg(const string & opt,
s.resize(s.size() - 1);
}
}
N n;
if (!string2Int(s, n))
throw UsageError("'%1%' requires an integer argument", opt);
return n * multiplier;
if (auto n = string2Int<N>(s))
return *n * multiplier;
throw UsageError("'%1%' requires an integer argument", opt);
}