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2024-04-25 r/8007 test(tvix/nix-compat): add debug assertions for nar readertcmal1-27/+211
Adds debug assertions to ensure that the reader's variants are upheld. If any of the following happens, then the currently in use reader must be abandoned: * A directory or file reader encounters an error * A directory or file reader is dropped before being fully read from Additionally, a directory reader must not be read from again after it has returned None. These checks are only used when debug_assertions are on, so vanish in release mode. Resolves two TODO items added by edef Change-Id: I27bd9643a632798db5351957506c166b9bd5ca4e Reviewed-on: https://cl.tvl.fyi/c/depot/+/11508 Reviewed-by: flokli <flokli@flokli.de> Reviewed-by: edef <edef@edef.eu> Autosubmit: Aria Shrimpton <me@aria.rip> Tested-by: BuildkiteCI
2023-11-19 r/7035 feat(nix-compat/nar/reader): provide passthrough buffered I/Oedef1-13/+75
Allow taking advantage of the buffer of the underlying reader to avoid unnecessary copies of file data. We can't easily implement the methods of BufRead directly, since we have some extra I/O to perform in the final consume() invocation. That could be resolved at the cost of additional bookkeeping, but this will suffice for now. Change-Id: I8100cf0abd79e7469670b8596bd989be5db44a91 Reviewed-on: https://cl.tvl.fyi/c/depot/+/10089 Reviewed-by: flokli <flokli@flokli.de> Tested-by: BuildkiteCI
2023-11-19 r/7034 fix(nix-compat/nar/reader): require BufReadedef1-2/+2
We rely on being able to make small reads cheaply, so this was already an implicit practical requirement. Requiring it explicitly removes a performance footgun, and makes further optimisations possible. Change-Id: I7f65880a41b1d6b5e6bf2e52dfe47d4c49b34bcd Reviewed-on: https://cl.tvl.fyi/c/depot/+/10088 Tested-by: BuildkiteCI Reviewed-by: flokli <flokli@flokli.de>
2023-10-18 r/6856 feat(tvix/nix-compat/nar/reader): add testsFlorian Klink1-0/+2
Change-Id: If0abaf74a3b7d201af8972e54e3e34b20b8c0bc4 Reviewed-on: https://cl.tvl.fyi/c/depot/+/9764 Tested-by: BuildkiteCI Reviewed-by: Connor Brewster <cbrewster@hey.com>
2023-10-18 r/6853 feat(tvix/nix-compat): NAR readeredef1-0/+229
Change-Id: I50d51baf62c0419eaf17f0dc262f728aaff9794d Reviewed-on: https://cl.tvl.fyi/c/depot/+/9688 Reviewed-by: raitobezarius <tvl@lahfa.xyz> Tested-by: BuildkiteCI Reviewed-by: flokli <flokli@flokli.de>