eldritch horrors 61eed2c97c libexpr: fully separate evaluator and running evaluation ... this finally gives us a witness type we can use to prove that a certain call graph subtree can't be used in kj promises using only a single new assumption: if EvalState& is never held as a reference member of a type and instead only ever passes as an argument or held on the stack we can be certain that anything that has access to en EvalState ref must never be run inside a promise and, crucially, that anything that doesn't have access to an EvalState& *can* be run inside a promise without problems. Change-Id: I6c15ada479175ad7e6cd3e4a729a5586b3ba30d6		2024-12-05 13:30:35 +00:00
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args.cc	libexpr: fully separate evaluator and running evaluation	2024-12-05 13:30:35 +00:00