This repository is forked from https://github.com/golang/tools which itself is a mirror of https://golang.org/x/tools

Two commands are modified in this fork: guru and stringer.

Guru is modified to allow it to work with cgo files.

Stringer is modified to allow it to also work with cgo files. In addition, stringer is modified to handle bit pattern constants.

Because the original import paths remain in the code, the guru and stringer commands build only after also installing golang.org/x/tools. From the original install instructions:

The easiest way to install is to run `go get -u golang.org/x/tools/...`.

After the two repos are downloaded, test and build the two commands from their respective directories, cmd/guru and cmd/stringer.

The license is unchanged from the forked version. It is the BSD 3-clause license.

Only single-bit bitflag constants are supported. Constants with multiple bits set are silently ignored.

A small example:

type M int

//go:generate stringer -bitflag -type=M

const (
	A M = 1 << iota
	B
)

fmt.Println(A)     // prints "A"
fmt.Println(B | A) // prints "(A|B)"