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Allow Flake inputs to accept boolean and integer attributes #4435

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merged 3 commits into from
Jan 11, 2021
Merged

Allow Flake inputs to accept boolean and integer attributes #4435

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93f1678
Allow Flake inputs to accept boolean and integer attributes
DanilaFe Jan 8, 2021
ba0f841
Use switch statement instead of sequence of ifs
DanilaFe Jan 8, 2021
1db3f84
Upcase "Boolean" in Flake attribute type error
DanilaFe Jan 9, 2021
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19 changes: 14 additions & 5 deletions src/libexpr/flake/flake.cc
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Original file line number Diff line number Diff line change
Expand Up @@ -120,11 +120,20 @@ static FlakeInput parseFlakeInput(EvalState & state,
expectType(state, nString, *attr.value, *attr.pos);
input.follows = parseInputPath(attr.value->string.s);
} else {
if (attr.value->type() == nString)
attrs.emplace(attr.name, attr.value->string.s);
else
throw TypeError("flake input attribute '%s' is %s while a string is expected",
attr.name, showType(*attr.value));
switch (attr.value->type()) {
case nString:
attrs.emplace(attr.name, attr.value->string.s);
break;
case nBool:
attrs.emplace(attr.name, Explicit<bool> { attr.value->boolean });
break;
case nInt:
attrs.emplace(attr.name, attr.value->integer);
break;
default:
throw TypeError("flake input attribute '%s' is %s while a string, Boolean, or integer is expected",
attr.name, showType(*attr.value));
}
}
} catch (Error & e) {
e.addTrace(*attr.pos, hintfmt("in flake attribute '%s'", attr.name));
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