go-tools

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Published: May 23, 2019 License: MIT

README

honnef.co/go/tools

honnef.co/go/tools/... is a collection of tools and libraries for working with Go code, including linters and static analysis, most prominently staticcheck.

These tools are supported by patrons on Patreon and sponsors. If you use these tools at your company, consider supporting open source by becoming a sponsor!

Installation

Releases

It is recommended that you run released versions of the tools. These releases can be found as git tags (e.g. 2019.1) as well as prebuilt binaries in the releases tab.

The easiest way of using the releases from source is to use a Go package manager such as Godep or Go modules. Alternatively you can use a combination of git clone -b and go get to check out the appropriate tag and download its dependencies.

Master

You can also run the master branch instead of a release. Note that while the master branch is usually stable, it may still contain new checks or backwards incompatible changes that break your build. By using the master branch you agree to become a beta tester.

To use the master branch, a simple go get -u honnef.co/go/tools/cmd/... suffices. You can also install a subset of the commands, for example only staticcheck with go get -u honnef.co/go/tools/cmd/staticcheck.

Tools

All of the following tools can be found in the cmd/ directory. Each tool is accompanied by its own README, describing it in more detail.

Tool Description
keyify Transforms an unkeyed struct literal into a keyed one.
rdeps Find all reverse dependencies of a set of packages
staticcheck Go static analysis, detecting bugs, performance issues, and much more.
structlayout Displays the layout (field sizes and padding) of structs.
structlayout-optimize Reorders struct fields to minimize the amount of padding.
structlayout-pretty Formats the output of structlayout with ASCII art.

Libraries

In addition to the aforementioned tools, this repository contains the libraries necessary to implement these tools.

Unless otherwise noted, none of these libraries have stable APIs. Their main purpose is to aid the implementation of the tools. If you decide to use these libraries, please vendor them and expect regular backwards-incompatible changes.

System requirements

We support the last two versions of Go.

Documentation

You can find extensive documentation on staticcheck.io.

Sponsors

This project is sponsored by:

DigitalOcean
Fastly
Uber

Licenses

All original code in this repository is licensed under the following MIT license.

Copyright (c) 2016 Dominik Honnef

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

In addition, some libraries reuse code owned by The Go Authors and licensed under the following BSD 3-clause license:

Copyright (c) 2013 The Go Authors. All rights reserved.

Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

  • Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
  • Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
  • Neither the name of Google Inc. nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

Directories

Path Synopsis
Package callgraph defines the call graph and various algorithms and utilities to operate on it.
Package callgraph defines the call graph and various algorithms and utilities to operate on it.
cha
Package cha computes the call graph of a Go program using the Class Hierarchy Analysis (CHA) algorithm.
Package cha computes the call graph of a Go program using the Class Hierarchy Analysis (CHA) algorithm.
rta
This package provides Rapid Type Analysis (RTA) for Go, a fast algorithm for call graph construction and discovery of reachable code (and hence dead code) and runtime types.
This package provides Rapid Type Analysis (RTA) for Go, a fast algorithm for call graph construction and discovery of reachable code (and hence dead code) and runtime types.
static
Package static computes the call graph of a Go program containing only static call edges.
Package static computes the call graph of a Go program containing only static call edges.
cmd
gosimple
gosimple detects code that could be rewritten in a simpler way.
gosimple detects code that could be rewritten in a simpler way.
keyify
keyify transforms unkeyed struct literals into a keyed ones.
keyify transforms unkeyed struct literals into a keyed ones.
megacheck
megacheck runs staticcheck, gosimple and unused.
megacheck runs staticcheck, gosimple and unused.
rdeps
rdeps scans GOPATH for all reverse dependencies of a set of Go packages.
rdeps scans GOPATH for all reverse dependencies of a set of Go packages.
staticcheck
staticcheck analyses Go code and makes it better.
staticcheck analyses Go code and makes it better.
structlayout
structlayout displays the layout (field sizes and padding) of structs.
structlayout displays the layout (field sizes and padding) of structs.
structlayout-optimize
structlayout-optimize reorders struct fields to minimize the amount of padding.
structlayout-optimize reorders struct fields to minimize the amount of padding.
structlayout-pretty
structlayout-pretty formats the output of structlayout with ASCII art.
structlayout-pretty formats the output of structlayout with ASCII art.
unused
unused reports unused identifiers (types, functions, ...) in your code.
unused reports unused identifiers (types, functions, ...) in your code.
Package gcsizes provides a types.Sizes implementation that adheres to the rules used by the gc compiler.
Package gcsizes provides a types.Sizes implementation that adheres to the rules used by the gc compiler.
go
types/typeutil
Package typeutil defines various utilities for types, such as Map, a mapping from types.Type to interface{} values.
Package typeutil defines various utilities for types, such as Map, a mapping from types.Type to interface{} values.
Package lint provides the foundation for tools like staticcheck
Package lint provides the foundation for tools like staticcheck
lintdsl
Package lintdsl provides helpers for implementing static analysis checks.
Package lintdsl provides helpers for implementing static analysis checks.
lintutil
Package lintutil provides helpers for writing linter command lines.
Package lintutil provides helpers for writing linter command lines.
lintutil/format
Package format provides formatters for linter problems.
Package format provides formatters for linter problems.
testutil
Package testutil provides helpers for testing staticcheck.
Package testutil provides helpers for testing staticcheck.
Package printf implements a parser for fmt.Printf-style format strings.
Package printf implements a parser for fmt.Printf-style format strings.
Package simple contains a linter for Go source code.
Package simple contains a linter for Go source code.
ssa
Package ssa defines a representation of the elements of Go programs (packages, types, functions, variables and constants) using a static single-assignment (SSA) form intermediate representation (IR) for the bodies of functions.
Package ssa defines a representation of the elements of Go programs (packages, types, functions, variables and constants) using a static single-assignment (SSA) form intermediate representation (IR) for the bodies of functions.
Package staticcheck contains a linter for Go source code.
Package staticcheck contains a linter for Go source code.
vrp
internal

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