This program is a drop-in replacement for Go's commonly used stringer tool.
In addition to generating String() string implementations for individual
constants, this version also works with bit flag sets.
For instance:
type T uint
const (
Foo T = 1 << iota
Bar
Baz
)When invoking Foo.String(), we should get "Foo".
But when invoking (Foo|Bar).String() the old stringer tool will only print a numeric value: "T(3)". In our case, we will get the expected: "Foo, Bar".
Unknown values in a bit flag set will still be presented in the "T(3)" form.
(T(1<<12) | Baz).String() == "Baz, T(4096)"$ go get -u github.com/hexaflex/stringer
In the go source file, use a go:generate statement to have the tool generate
the required code. For the existing behaviour of Go's stringer tool, use:
//go:generate stringer -type=MyType
In order to treat a type as a bit flag set, use:
//go:generate stringer -flags -type=MyType
Copyright 2014 The Go Authors. All rights reserved. Use of this source code is governed by a BSD-style license that can be found in the LICENSE file.