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feat(tvix/eval): set up deferred upvalues at runtime

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This will leave a sentinel value in the upvalue slot in which the
actual value is to be captured after resolution once a scope is fully
set up.

Change-Id: I12b37b0dc8d32603b03e675c3bd039468e70b354
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6336
Tested-by: BuildkiteCI
Reviewed-by: sterni <sternenseemann@systemli.org>
This commit is contained in:
Vincent Ambo 2022-08-28 16:59:08 +03:00 • committed by tazjin
parent 6c1948a71a
commit 1bfe32f412
2 changed files with 7 additions and 3 deletions
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4
tvix/eval/src/vm.rs
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@ -426,8 +426,8 @@ impl VM {
closure.push_upvalue(value);
}
OpCode::DataDeferredLocal(_idx) => {
todo!("deferred local initialisation")
OpCode::DataDeferredLocal(idx) => {
closure.push_upvalue(Value::DeferredUpvalue(idx));
}
_ => panic!("compiler error: missing closure operand"),