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optionally return string_view from coerceToString

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we'll retain the old coerceToString interface that returns a string, but callers
that don't need the returned value to outlive the Value it came from can save
copies by using the new interface instead. for values that weren't stringy we'll
pass a new buffer argument that'll be used for storage and shouldn't be
inspected.
This commit is contained in:
pennae 2022-01-21 16:20:54 +01:00
parent 41d70a2fc8
commit d439dceb3b
10 changed files with 121 additions and 51 deletions
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4
src/libexpr/flake/flake.cc
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@ -253,7 +253,9 @@ static Flake getFlake(
flake.config.settings.insert({setting.name, string(state.forceStringNoCtx(*setting.value, *setting.pos))});
else if (setting.value->type() == nPath) {
PathSet emptyContext = {};
flake.config.settings.insert({setting.name, state.coerceToString(*setting.pos, *setting.value, emptyContext, false, true, true)});
flake.config.settings.emplace(
setting.name,
state.coerceToString(*setting.pos, *setting.value, emptyContext, false, true, true) .toOwned());
}
else if (setting.value->type() == nInt)
flake.config.settings.insert({setting.name, state.forceInt(*setting.value, *setting.pos)});