Commit Graph

6 Commits

Author SHA1 Message Date
Fraser Waters 16d9f4c167
Enable perfsprint linter ()
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# Description

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Please also include relevant motivation and context. -->

Prompted by a comment in another review:
https://github.com/pulumi/pulumi/pull/14654#discussion_r1419995945

This lints that we don't use `fmt.Errorf` when `errors.New` will
suffice, it also covers a load of other cases where `Sprintf` is
sub-optimal.

Most of these edits were made by running `perfsprint --fix`.

## Checklist

- [x] I have run `make tidy` to update any new dependencies
- [x] I have run `make lint` to verify my code passes the lint check
  - [x] I have formatted my code using `gofumpt`

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- [ ] I have added tests that prove my fix is effective or that my
feature works
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- [ ] I have run `make changelog` and committed the
`changelog/pending/<file>` documenting my change
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2023-12-12 12:19:42 +00:00
Fraser Waters 571fadae3f Use slice.Prealloc instead of make([]T, 0, ...)
Fixes https://github.com/pulumi/pulumi/issues/12738

https://github.com/pulumi/pulumi/pull/11834 turned on the prealloc
linter and changed a load of slice uses from just `var x T[]` to `x :=
make([]T, 0, preallocSize)`. This was good for performance but it turns
out there are a number of places in the codebase that treat a `nil`
slice as semnatically different to an empty slice.

Trying to test that, or even reason that through for every callsite is
untractable, so this PR replaces all expressions of the form `make([]T,
0, size)` with a call to `slice.Prealloc[T](size)`. When size is 0 that
returns a nil array, rather than an empty array.
2023-06-29 11:27:50 +01:00
Abhinav Gupta 7aa5b77a0c
all: Reformat with gofumpt
Per team discussion, switching to gofumpt.

[gofumpt][1] is an alternative, stricter alternative to gofmt.
It addresses other stylistic concerns that gofmt doesn't yet cover.

  [1]: https://github.com/mvdan/gofumpt

See the full list of [Added rules][2], but it includes:

- Dropping empty lines around function bodies
- Dropping unnecessary variable grouping when there's only one variable
- Ensuring an empty line between multi-line functions
- simplification (`-s` in gofmt) is always enabled
- Ensuring multi-line function signatures end with
  `) {` on a separate line.

  [2]: https://github.com/mvdan/gofumpt#Added-rules

gofumpt is stricter, but there's no lock-in.
All gofumpt output is valid gofmt output,
so if we decide we don't like it, it's easy to switch back
without any code changes.

gofumpt support is built into the tooling we use for development
so this won't change development workflows.

- golangci-lint includes a gofumpt check (enabled in this PR)
- gopls, the LSP for Go, includes a gofumpt option
  (see [installation instrutions][3])

  [3]: https://github.com/mvdan/gofumpt#installation

This change was generated by running:

```bash
gofumpt -w $(rg --files -g '*.go' | rg -v testdata | rg -v compilation_error)
```

The following files were manually tweaked afterwards:

- pkg/cmd/pulumi/stack_change_secrets_provider.go:
  one of the lines overflowed and had comments in an inconvenient place
- pkg/cmd/pulumi/destroy.go:
  `var x T = y` where `T` wasn't necessary
- pkg/cmd/pulumi/policy_new.go:
  long line because of error message
- pkg/backend/snapshot_test.go:
  long line trying to assign three variables in the same assignment

I have included mention of gofumpt in the CONTRIBUTING.md.
2023-03-03 09:00:24 -08:00
Ian Wahbe ae66618d4c Handle recursive types
This PR adds 3 behaviors to the `pretty.Formatter` type.

1. A inner string method that accommodates state.
2. A visit function that allows pre-processing to discover recursive
types and apply tags to them.
3. A hash function that allows structural hashing on recursive types.

Together, this allows pretty-printing recursive types, regardless of
the pointers are. This allows `(0x1)Object{ key: *0x1 }` to be the same
as `(0x1)Object{ key: (0x2)Object{ key: *0x1 }}`.

Turn on pretty printing of types in all cases

Speed up printing by memoizing object hashes
2023-01-13 11:28:13 -08:00
Abhinav Gupta 8280296699
gosimple: printf, time.Since, TrimPrefix, etc.
Fix a bunch of other gosimple issues:

- `Printf` used for static string
- `Skip(Printf(..))` => `Skipf(..)`
- `time.Now().Sub(t)` => `time.Since(t)`
- `HasPrefix; TrimPrefix` => `TrimPrefix`
- Unnecessary type casts
- `IndexRune(..) != 1` => `ContainsRune`
- `if cond { return true } else { return false }` => `return cond`
2023-01-12 09:55:34 -08:00
Ian Wahbe 9109607498 Pretty print PCL types
This is part of an effort to make PCL type error messages better.
2022-12-19 17:13:15 +01:00