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authorVincent Ambo <mail@tazj.in>2022-12-12T14·19+0300
committertazjin <tazjin@tvl.su>2022-12-21T22·37+0000
commit25fc6b7c25d75075461e7976b27b81ba6a8140fe (patch)
tree591e4bbec276ead8cbce0c847e79449733ca7ad1 /tvix/eval/src/upvalues.rs
parentbf286a54bc2ac5eeb78c3d5c5ae66e9af24d74d4 (diff)
feat(tvix/eval): introduce initial EvalIO trait r/5458
This trait is going to be used to abstract filesystem interactions in
Tvix.

For now, it only contains a `read_to_string` method that closely
mirrors `std::fs::read_to_string`.

As a first step, to see how this works in practice, we will thread
through only this function to the various relevant parts.

Two implementations are provided in tvix-eval itself: A dummy
implementation (which just returns ErrorKind::NotImplemented for all
operations), and a std implementation which delegates to `std`
functions.

Change-Id: Ied3e3bf4bd0e874dd84e166190e3873a0f923ddb
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7565
Reviewed-by: grfn <grfn@gws.fyi>
Tested-by: BuildkiteCI
Diffstat (limited to 'tvix/eval/src/upvalues.rs')
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