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return string_views from forceString*

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once a string has been forced we already have dynamic storage allocated for it,
so we can easily reuse that storage instead of copying.
This commit is contained in:
pennae 2022-01-21 14:44:00 +01:00
parent 0d7fae6a57
commit 41d70a2fc8
19 changed files with 94 additions and 87 deletions
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2
src/libexpr/get-drvs.cc
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@ -104,7 +104,7 @@ DrvInfo::Outputs DrvInfo::queryOutputs(bool onlyOutputsToInstall)
/* For each output... */
for (auto elem : i->value->listItems()) {
/* Evaluate the corresponding set. */
string name = state->forceStringNoCtx(*elem, *i->pos);
string name(state->forceStringNoCtx(*elem, *i->pos));
Bindings::iterator out = attrs->find(state->symbols.create(name));
if (out == attrs->end()) continue; // FIXME: throw error?
state->forceAttrs(*out->value);