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Alan Donovan 187911b873 internal/refactor/inline: more precise SelectorExpr effects 
The treatment of MethodVal and FieldVal selections should
mostly be consistent, as both apply the same implicit
field selection operations to the explicit receiver.
(Only the final implicit &v or *ptr operations differ.)
However, Selection.Indirect has a bug that masked this
similarity.

This change handles SelectorExpr more carefully throughout.
The indirectSelection method helper provides a non-buggy
implementation of Selection.Indirect.

The net result is that, in the callee effects analysis,
selection operations that don't indirect a pointer are pure,
and those that do indirect a pointer act like a read,
allowing them to commute with other reads.

Change-Id: I1500785a72d0b184e39ae0a51448a165789c3ca3
Reviewed-on: https://go-review.googlesource.com/c/tools/+/533156
Reviewed-by: Robert Findley <rfindley@google.com>
Auto-Submit: Alan Donovan <adonovan@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
 		2023-10-11 03:06:43 +00:00
benchmark/parse benchmark/parse: add unit test for String function 2019-12-16 21:43:19 +00:00
blog copyright: test that all files in the repo have copyright notices 2021-01-11 22:19:46 +00:00
cmd cmd/compilebench: pass linker flags to prebuild 2023-10-10 03:24:50 +00:00
container/intsets all: remove redundant type conversion 2022-09-07 17:33:19 +00:00
copyright tools: replace references to obsolete package ioutils 2023-09-12 20:13:37 +00:00
cover cover: eliminate an unnecessary fsync in TestParseProfiles 2023-05-17 15:38:17 +00:00
go go/analysis/passes/httpmux: add command 2023-10-10 18:46:56 +00:00
godoc tools: clean up after removing all references to ioutil 2023-09-18 16:47:49 +00:00
gopls gopls: allow all drive letters in cache/filemap_test.go 2023-10-10 16:27:10 +00:00
imports tools: replace references to obsolete package ioutils 2023-09-12 20:13:37 +00:00
internal internal/refactor/inline: more precise SelectorExpr effects 2023-10-11 03:06:43 +00:00
playground tools: replace references to obsolete package ioutils 2023-09-12 20:13:37 +00:00
present tools: replace references to obsolete package ioutils 2023-09-12 20:13:37 +00:00
refactor tools: replace references to obsolete package ioutils 2023-09-12 20:13:37 +00:00
txtar tools: replace references to obsolete package ioutils 2023-09-12 20:13:37 +00:00
.gitattributes tools: copying .gitattributes to all subrepositories (fixes windows build) 2014-12-23 06:32:51 +00:00
.gitignore .gitignore: roll back ".gitignore: ignore emacs backup files" 2018-02-13 00:43:28 +00:00
.prettierrc all: add a section on JS/CSS formatting to README 2020-05-28 15:31:34 +00:00
CONTRIBUTING.md CONTRIBUTING.md: remove note about not accepting Pull Requests 2018-03-14 18:02:17 +00:00
LICENSE LICENSE: add 2012-03-17 15:20:58 +11:00
PATENTS go.empty: add PATENTS file to the subrepo. 2012-04-16 11:24:04 +10:00
README.md go/vcs: delete 2023-06-26 18:28:02 +00:00
codereview.cfg tools: add codereview.cfg 2015-03-18 17:04:00 +00:00
go.mod go.mod: update golang.org/x dependencies 2023-10-06 08:34:21 +00:00
go.sum go.mod: update golang.org/x dependencies 2023-10-06 08:34:21 +00:00

README.md

Go Tools

PkgGoDev

This repository provides the golang.org/x/tools module, comprising various tools and packages mostly for static analysis of Go programs, some of which are listed below. Use the "Go reference" link above for more information about any package.

It also contains the golang.org/x/tools/gopls module, whose root package is a language-server protocol (LSP) server for Go. An LSP server analyses the source code of a project and responds to requests from a wide range of editors such as VSCode and Vim, allowing them to support IDE-like functionality.

Selected commands:

  • cmd/goimports formats a Go program like go fmt and additionally inserts import statements for any packages required by the file after it is edited.
  • cmd/callgraph prints the call graph of a Go program.
  • cmd/digraph is a utility for manipulating directed graphs in textual notation.
  • cmd/stringer generates declarations (including a String method) for "enum" types.
  • cmd/toolstash is a utility to simplify working with multiple versions of the Go toolchain.

These commands may be fetched with a command such as

go install golang.org/x/tools/cmd/goimports@latest

Selected packages:

  • go/ssa provides a static single-assignment form (SSA) intermediate representation (IR) for Go programs, similar to a typical compiler, for use by analysis tools.

  • go/packages provides a simple interface for loading, parsing, and type checking a complete Go program from source code.

  • go/analysis provides a framework for modular static analysis of Go programs.

  • go/callgraph provides call graphs of Go programs using a variety of algorithms with different trade-offs.

  • go/ast/inspector provides an optimized means of traversing a Go parse tree for use in analysis tools.

  • go/cfg provides a simple control-flow graph (CFG) for a Go function.

  • go/expect reads Go source files used as test inputs and interprets special comments within them as queries or assertions for testing.

  • go/gcexportdata and go/gccgoexportdata read and write the binary files containing type information used by the standard and gccgo compilers.

  • go/types/objectpath provides a stable naming scheme for named entities ("objects") in the go/types API.

Numerous other packages provide more esoteric functionality.

Contributing

This repository uses Gerrit for code changes. To learn how to submit changes, 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.

JavaScript and CSS Formatting

This repository uses prettier to format JS and CSS files.

The version of prettier used is 1.18.2.

It is encouraged that all JS and CSS code be run through this before submitting a change. However, it is not a strict requirement enforced by CI.