codeql

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Taus 9b7a9c3851 yeast: Use clone-and-drop for per-rule context isolation

In order to avoid having context changes bubble up through the tree (or
from one sibling to another) the current framework makes a copy of the
context before calling `translate` recursively, and then restores it
afterwards.

However, this is a bit silly -- after we're done with all of the
translations, there's really no need to restore the context (as it
doesn't get accessed again).

So instead we change it from "save and then restore" to "clone and then
drop". Each rule invocation gets its own copy of the context, and simply
drops it when it's done.

2026-07-08 12:33:36 +00:00