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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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10
src/libexpr/parser.y
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@ -709,24 +709,24 @@ void EvalState::addToSearchPath(const string & s)
}
Path EvalState::findFile(const string & path)
Path EvalState::findFile(const std::string_view path)
{
return findFile(searchPath, path);
}
Path EvalState::findFile(SearchPath & searchPath, const string & path, const Pos & pos)
Path EvalState::findFile(SearchPath & searchPath, const std::string_view path, const Pos & pos)
{
for (auto & i : searchPath) {
std::string suffix;
if (i.first.empty())
suffix = "/" + path;
suffix = concatStrings("/", path);
else {
auto s = i.first.size();
if (path.compare(0, s, i.first) != 0 ||
(path.size() > s && path[s] != '/'))
continue;
suffix = path.size() == s ? "" : "/" + string(path, s);
suffix = path.size() == s ? "" : concatStrings("/", path.substr(s));
}
auto r = resolveSearchPathElem(i);
if (!r.first) continue;
@ -735,7 +735,7 @@ Path EvalState::findFile(SearchPath & searchPath, const string & path, const Pos
}
if (hasPrefix(path, "nix/"))
return corepkgsPrefix + path.substr(4);
return concatStrings(corepkgsPrefix, path.substr(4));
throw ThrownError({
.msg = hintfmt(evalSettings.pureEval