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libexpr: Statically allocate commonly used symbols

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The motivation for this change is two-fold:

1. Commonly used Symbol values can be referred to
   quite often and they can be assigned at compile-time
   rather than runtime.

2. This also unclutters EvalState constructor, which was
   getting very long and unreadable.

Spiritually similar to https://gerrit.lix.systems/c/lix/+/2218,
though that patch doesn't allocate the Symbol at compile time.

Co-authored-by: eldritch horrors <pennae@lix.systems>
This commit is contained in:
Sergei Zimmerman 2025-08-31 12:56:02 +03:00 • committed by Jörg Thalheim
parent 2746985d90
commit 363620dd24
23 changed files with 313 additions and 255 deletions
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2
src/libexpr/value-to-json.cc
View file

@ -53,7 +53,7 @@ json printValueAsJSON(
out = *maybeString;
break;
}
if (auto i = v.attrs()->get(state.sOutPath))
if (auto i = v.attrs()->get(state.s.outPath))
return printValueAsJSON(state, strict, *i->value, i->pos, context, copyToStore);
else {
out = json::object();