alexxnica / go-tools

A collection of tools and libraries for working with Go code, including linters and static analysis

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.

These tools are supported by patrons on Patreon and sponsors. If you use these tools at your company, consider purchasing commercial support.

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
gosimple	Detects code that could be rewritten in a simpler way.
keyify	Transforms an unkeyed struct literal into a keyed one.
rdeps	Find all reverse dependencies of a set of packages
staticcheck	Detects a myriad of bugs and inefficiencies in your code.
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.
unused	Reports unused identifiers (types, functions, ...) in your code.
megacheck	Run staticcheck, gosimple and unused in one go

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.

Documentation

You can find more documentation on staticcheck.io.

Sponsors

This project is sponsored by:

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.