romanyx / guard

Allows to generate guard function and call for constructor

guard

guard allows to generate guard function for constructors which are checking possible nil inputs in parameters.

type Fooer interface {
	Foo() error
}

type Bar struct {
	foo Fooer
	r io.Reader
}

func NewBar(foo Fooer, r io.Reader) Bar {
	bar := Bar {
		foo: foo,
		r: r,
	}

	return &bar
}

$ go-guard func NewBar
// guardNewBar allows to guard NewBar constructor.
func guardNewBar(foo Fooer, r io.Reader) {
	guard.MustNotNil(1, "foo", foo)
	guard.MustNotNil(2, "r", r)
}

$ go-guard call NewStr
guardNewBar(foo, r)

guard import path is github.com/romanyx/guard

You can use go-guard from Vim with vim-go-guard plugin