internal/imports: merge import declarations

When an import is added to the ast, the import declarations are merged
together into the first import declaration. Since this is a part of
the formatting functionality of goimports, do this during formatting
regardless.

The merging pass was added to astutil.AddNamedImport in order to address
issue golang/go#14075. This joined imports from other blocks into the first
import declaration, so that a single block of imports isn't split across
multiple blocks.

This functionality is more of a formatting change than a fix imports
change, in line with sorting the imports, which occurs even when
FormatOnly. The formatting was only applied when an import was added
(not renamed or deleted). This change makes formatting by goimports
more consistent across runs and is not dependent on the exact fixes
that need to be applied.

Change-Id: Icb90bf694ff35e2d6405a3d477cf82fcd3e697e0
Reviewed-on: https://go-review.googlesource.com/c/tools/+/189941
Run-TryBot: Suzy Mueller <suzmue@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
3 files changed
tree: 4c260d32a04678679676e89043691da7a115e38d
  1. benchmark/
  2. blog/
  3. cmd/
  4. container/
  5. cover/
  6. go/
  7. godoc/
  8. gopls/
  9. imports/
  10. internal/
  11. playground/
  12. present/
  13. refactor/
  14. .gitattributes
  15. .gitignore
  16. AUTHORS
  17. codereview.cfg
  18. CONTRIBUTING.md
  19. CONTRIBUTORS
  20. go.mod
  21. go.sum
  22. LICENSE
  23. PATENTS
  24. README.md
README.md

Go Tools

This subrepository holds the source for various packages and tools that support the Go programming language.

Some of the tools, godoc and vet for example, are included in binary Go distributions.

Others, including the Go guru and the test coverage tool, can be fetched with go get.

Packages include a type-checker for Go and an implementation of the Static Single Assignment form (SSA) representation for Go programs.

Download/Install

The easiest way to install is to run go get -u golang.org/x/tools/.... You can also manually git clone the repository to $GOPATH/src/golang.org/x/tools.

Report Issues / Send Patches

This repository uses Gerrit for code changes. To learn how to submit changes to this repository, see https://golang.org/doc/contribute.html.

The main issue tracker for the tools repository is located at https://github.com/golang/go/issues. Prefix your issue with “x/tools/(your subdir):” in the subject line, so it is easy to find.