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fix: Fix methods not mutating fields #2087

Merged
merged 2 commits into from
Jul 31, 2023
Merged

fix: Fix methods not mutating fields #2087

merged 2 commits into from
Jul 31, 2023

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jfecher
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@jfecher jfecher commented Jul 28, 2023

Description

Problem*

Resolves #1887

Summary*

This problem was conceptually difficult to fix for a few reasons since it stemmed from the otherwise desired behavior of automatically inserting dereferences when accessing a field of a struct through a mutable reference. In the end I went with the somewhat hacky approach of remembering which dereferences were implicitly inserted and removing one after the fact if needed. We must only remove implicitly inserted dereferences of course because it is valid semantics for the user to explicitly dereference and call a method as (*foo).bar.mutate() to explicitly work on a copy rather than mutating foo.

Documentation

  • This PR requires documentation updates when merged.

    • I will submit a noir-lang/docs PR.
    • I will request for and support Dev Rel's help in documenting this PR.

Additional Context

PR Checklist*

  • I have tested the changes locally.
  • I have formatted the changes with Prettier and/or cargo fmt on default settings.

@jfecher jfecher mentioned this pull request Jul 28, 2023
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@iAmMichaelConnor iAmMichaelConnor mentioned this pull request Jul 29, 2023
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vezenovm
vezenovm approved these changes Jul 31, 2023
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LGTM. I assume you went with this approach as it was simpler than inserting implicit dereferences in some cases and not in others as you would have to track member accesses.

@jfecher jfecher added this pull request to the merge queue Jul 31, 2023
Merged via the queue into master with commit 6acc242 Jul 31, 2023
@jfecher jfecher deleted the jf/fix-methods-mutating-fields branch July 31, 2023 14:20
@kevaundray kevaundray mentioned this pull request Jul 31, 2023
Merged
TomAFrench added a commit that referenced this pull request Aug 1, 2023
@TomAFrench
Merge branch 'master' into boolean-and
d56bddf 
* master: (53 commits)
  chore: Update `noir-source-resolver` to v1.1.3 (#1912)
  chore: Document `GeneratedAcir::more_than_eq_comparison` (#2085)
  chore: refresh ACIR test artifacts (#2091)
  feat: Add `deprecated` attribute (#2041)
  chore(ssa refactor): Implement `acir_gen` errors (#2071)
  chore: use witnesses from the generated acir in the ABI (#2095)
  fix: Fix methods not mutating fields (#2087)
  chore(nargo): Use Display impl for InputValue (#1990)
  feat: Make arrays and slices polymorphic over each other (#2070)
  feat: Remove an unnecessary witness in `mul_with_witness` (#2078)
  chore: document truncate (#2082)
  fix: avoid potential panic in `two_complement` (#2081)
  chore: Cleanup integration tests (#2074)
  chore: replace `Type::TypeVariable`, `Type::PolymorphicInteger`, and … (#2065)
  chore!: Require package names in `Nargo.toml` files (#2056)
  fix: Avoid non-determinism in defunctionalization (#2069)
  chore: change 'unnecessary pub' error to a warning (#2064)
  feat!: Update to ACVM 0.21.0 (#2051)
  chore: Rename execute tests for an accurate description (#2063)
  chore: Restore lost integration test (#2062)
  ...
TomAFrench added a commit that referenced this pull request Aug 1, 2023
@TomAFrench
Merge branch 'master' into abi-wasm
8182412 
* master: (75 commits)
  fix: Mutating a variable no longer mutates its copy (#2057)
  fix: Implement `.len()` in Acir-Gen (#2077)
  chore: clippy fixes (#2101)
  chore: Update `noir-source-resolver` to v1.1.3 (#1912)
  chore: Document `GeneratedAcir::more_than_eq_comparison` (#2085)
  chore: refresh ACIR test artifacts (#2091)
  feat: Add `deprecated` attribute (#2041)
  chore(ssa refactor): Implement `acir_gen` errors (#2071)
  chore: use witnesses from the generated acir in the ABI (#2095)
  fix: Fix methods not mutating fields (#2087)
  chore(nargo): Use Display impl for InputValue (#1990)
  feat: Make arrays and slices polymorphic over each other (#2070)
  feat: Remove an unnecessary witness in `mul_with_witness` (#2078)
  chore: document truncate (#2082)
  fix: avoid potential panic in `two_complement` (#2081)
  chore: Cleanup integration tests (#2074)
  chore: replace `Type::TypeVariable`, `Type::PolymorphicInteger`, and … (#2065)
  chore!: Require package names in `Nargo.toml` files (#2056)
  fix: Avoid non-determinism in defunctionalization (#2069)
  chore: change 'unnecessary pub' error to a warning (#2064)
  ...
TomAFrench added a commit that referenced this pull request Aug 1, 2023
@TomAFrench
Merge branch 'master' into abi-wasm
0ccf055 
* master: (75 commits)
  fix: Mutating a variable no longer mutates its copy (#2057)
  fix: Implement `.len()` in Acir-Gen (#2077)
  chore: clippy fixes (#2101)
  chore: Update `noir-source-resolver` to v1.1.3 (#1912)
  chore: Document `GeneratedAcir::more_than_eq_comparison` (#2085)
  chore: refresh ACIR test artifacts (#2091)
  feat: Add `deprecated` attribute (#2041)
  chore(ssa refactor): Implement `acir_gen` errors (#2071)
  chore: use witnesses from the generated acir in the ABI (#2095)
  fix: Fix methods not mutating fields (#2087)
  chore(nargo): Use Display impl for InputValue (#1990)
  feat: Make arrays and slices polymorphic over each other (#2070)
  feat: Remove an unnecessary witness in `mul_with_witness` (#2078)
  chore: document truncate (#2082)
  fix: avoid potential panic in `two_complement` (#2081)
  chore: Cleanup integration tests (#2074)
  chore: replace `Type::TypeVariable`, `Type::PolymorphicInteger`, and … (#2065)
  chore!: Require package names in `Nargo.toml` files (#2056)
  fix: Avoid non-determinism in defunctionalization (#2069)
  chore: change 'unnecessary pub' error to a warning (#2064)
  ...
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Calling a nested method does not mutate the struct field
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@jfecher @vezenovm