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feat!: Introduce WitnessMap data structure to avoid leaking internal structure#252
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TomAFrench merged 10 commits intomasterfrom May 12, 2023
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feat!: Introduce WitnessMap data structure to avoid leaking internal structure#252TomAFrench merged 10 commits intomasterfrom
TomAFrench merged 10 commits intomasterfrom
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This was referenced May 1, 2023
TomAFrench
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Nice! Yeah, this has been something floating in the back of my mind as well so thank you for implementing it.
Just a couple of comments on this. We should also check the I assumed you had checked already but just saw the draft PRs which confirmed.aztec_backend and noir repos to ensure we're not missing out any features we need to add (I can't see any that aren't already covered here)
TomAFrench
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Updating the downstream PRs are blocked on noir-lang/acvm-backend-barretenberg#151 |
* master: chore(acvm)!: Backend trait must implement Debug (#275) chore!: remove `OpcodeResolutionError::UnexpectedOpcode` (#274) chore(acvm)!: rename `hash_to_field128_security` to `hash_to_field_128_security` (#271) feat(acvm)!: update black box solver interfaces to match `pwg:black_box::solve` (#268) chore(acir_field): remove unnecessary `to_vec()` (#267) chore(acvm)!: expose separate solvers for AND and XOR opcodes (#266) feat(acvm)!: Simplification pass for ACIR (#151)
* master: feat!: use struct variants for blackbox function calls (#269)
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* master: (49 commits) feat(acvm)!: Add CommonReferenceString backend trait (#231) fix(acir): Hide variants of WitnessMapError and export it from package (#283) feat!: Introduce WitnessMap data structure to avoid leaking internal structure (#252) feat!: use struct variants for blackbox function calls (#269) chore(acvm)!: Backend trait must implement Debug (#275) chore!: remove `OpcodeResolutionError::UnexpectedOpcode` (#274) chore(acvm)!: rename `hash_to_field128_security` to `hash_to_field_128_security` (#271) feat(acvm)!: update black box solver interfaces to match `pwg:black_box::solve` (#268) chore(acir_field): remove unnecessary `to_vec()` (#267) chore(acvm)!: expose separate solvers for AND and XOR opcodes (#266) feat(acvm)!: Simplification pass for ACIR (#151) changes the name of blake to be blakes2s256 (#261) update hash functions (#260) feat!: Remove `solve` from PWG trait & introduce separate solvers for each blackbox (#257) chore: Release 0.11.0 (#250) feat(acvm): Add generic error for failing to solve an opcode (#251) fix(acir): Fix `Expression` multiplication to correctly handle degree 1 terms (#255) chore(acir): organise opcodes definitions (#254) chore: remove usage of `insert_witness` with `insert_value` (#253) feat: Add Keccak Hash function (#259) ...
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Related issue(s)
Resolves (link to issue)
Description
Summary of changes
This implements a
WitnessMaptype that wraps BTreeMap throughout the project. I noticed that this was a leaky abstraction because theto_bytesandfrom_bytesimplementations on Witness took or returned BTreeMaps instead of operating on one Witness.By implementing this newtype, we can implement traits against it to provide a much smoother API and still allow us to change the underlying data type if we want or need to. I also hope this streamlines serde between wasm & JS in the future but I've not built that out yet.
While I was updating Noir itself, I noticed that it also had a
WitnessMaptype alias, so that further solidified my belief that this type needed to exist in ACVM.Dependency additions / changes
(If applicable.)
Test additions / changes
(If applicable.)
Checklist
cargo fmtwith default settings.Additional context
(If applicable.)