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feat: Syntax for environment types now works with generics #2383

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merged 9 commits into from
Aug 28, 2023

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alexvitkov
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Description

Problem*

The syntax for closure environment types that I added in #2357 is sub-optimal as it does not play well with generics.

Resolves: #2334

Summary*

  • As suggested in feat: add syntax for specifying function type environments #2357 (comment) this PR changes it changed from fn[envarg1, envarg2](arg1, arg2, ...) -> ret to fn[env_type](arg1, arg2, ...) -> ret so that a named generic can be used an environment.

  • Additional error checking is also added, since the new syntax allows passing any type as an environment, but the only valid ones are Unit/NamedGeneric/Tuple.

  • Added tests for generic closure environments

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.

@alexvitkov alexvitkov changed the title fix: Syntax for environment types now works with generics feat: Syntax for environment types now works with generics Aug 21, 2023
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@jfecher jfecher left a comment

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Looks good but if we move the error check to the parser we can get it a bit cleaner

crates/noirc_frontend/src/hir/resolution/resolver.rs Outdated Show resolved Hide resolved
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jfecher commented Aug 22, 2023

After testing out this PR, I think it is too confusing to report the error in a different source location. Can you add source locations to UnresolvedTypes so that the error location is correct?

@alexvitkov alexvitkov force-pushed the closure-syntax-change branch from 33e2701 to 4f5cf9e Compare August 23, 2023 06:10
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I've added spans to UnresolvedType, the error now looks like this:

error: asdkj is not a valid closure environment type
  ┌─ /home/vitkov/code/repos/metacraft-labs/noir/proj/src/main.nr:4:16
  │
4 │ fn bad(foo: fn[asdkj]() -> Field) {
  │                ----- Closure environment must be a tuple or unit type

I thought about submitting a new PR, but it turned out not to be that massive of a change, so I dropped it in here so we can get it done faster

@alexvitkov alexvitkov force-pushed the closure-syntax-change branch from acf9814 to f2a9016 Compare August 28, 2023 05:08
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👍

@jfecher jfecher enabled auto-merge August 28, 2023 16:27
@jfecher jfecher added this pull request to the merge queue Aug 28, 2023
Merged via the queue into noir-lang:master with commit 4609c1a Aug 28, 2023
TomAFrench added a commit that referenced this pull request Aug 28, 2023
* master:
  feat(ssa): Reuse existing results for duplicated instructions with no side-effects (#2460)
  fix: Closure lvalue capture bugfix (#2457)
  feat: Syntax for environment types now works with generics (#2383)
  fix(parser): fixes for the parsing of 'where' clauses (#2430)
  fix: Run `wasm` nodejs tests with no fails (#2387)
TomAFrench added a commit that referenced this pull request Aug 30, 2023
* master: (42 commits)
  fix(ssa): Handle right shift with constants (#2481)
  chore(noir): Release 0.10.4 (#2354)
  fix: Divide by zero should fail to satisfy constraints for `Field` and ints (#2475)
  fix(ssa): Remove padding from ToRadix call with constant inputs (#2479)
  fix: Implement handling of array aliasing in the mem2reg optimization pass (#2463)
  chore: resolve `Instruction` inputs fully before checking against cache (#2472)
  chore: Move independent `run_test` function into nargo core (#2468)
  feat: Standard library functions can now be called with closure args  (#2471)
  feat(frontend): aztec syntactic sugar (feature flagged) (#2403)
  chore(ci): enforce compliance with `cargo fmt` (#2467)
  chore(ci): Allow releases to have additional feature flags (#2405)
  feat: Add `assert_eq` keyword (#2137)
  fix(ssa): Do not optimize for allocates in constant folding (#2466)
  feat(ssa): Reuse existing results for duplicated instructions with no side-effects (#2460)
  fix: Closure lvalue capture bugfix (#2457)
  feat: Syntax for environment types now works with generics (#2383)
  fix(parser): fixes for the parsing of 'where' clauses (#2430)
  fix: Run `wasm` nodejs tests with no fails (#2387)
  chore: Run `cargo fmt` (#2455)
  chore: Perform formatting changes to integration tests (#2448)
  ...
TomAFrench added a commit that referenced this pull request Aug 30, 2023
* master: (42 commits)
  fix(ssa): Handle right shift with constants (#2481)
  chore(noir): Release 0.10.4 (#2354)
  fix: Divide by zero should fail to satisfy constraints for `Field` and ints (#2475)
  fix(ssa): Remove padding from ToRadix call with constant inputs (#2479)
  fix: Implement handling of array aliasing in the mem2reg optimization pass (#2463)
  chore: resolve `Instruction` inputs fully before checking against cache (#2472)
  chore: Move independent `run_test` function into nargo core (#2468)
  feat: Standard library functions can now be called with closure args  (#2471)
  feat(frontend): aztec syntactic sugar (feature flagged) (#2403)
  chore(ci): enforce compliance with `cargo fmt` (#2467)
  chore(ci): Allow releases to have additional feature flags (#2405)
  feat: Add `assert_eq` keyword (#2137)
  fix(ssa): Do not optimize for allocates in constant folding (#2466)
  feat(ssa): Reuse existing results for duplicated instructions with no side-effects (#2460)
  fix: Closure lvalue capture bugfix (#2457)
  feat: Syntax for environment types now works with generics (#2383)
  fix(parser): fixes for the parsing of 'where' clauses (#2430)
  fix: Run `wasm` nodejs tests with no fails (#2387)
  chore: Run `cargo fmt` (#2455)
  chore: Perform formatting changes to integration tests (#2448)
  ...
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Allow higher order functions to be called with closures, and to return closures
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