Method Diff

tool/gocross/env.go:111–131

Diff returns a string describing the pending mutations to the environment.

()

// Diff returns a string describing the pending mutations to the environment.
func (e *Environment) Diff() string {
	lines := make([]string, 0, len(e.set)+len(e.unset))
	for k, v := range e.set {
		old, ok := e.init[k]
		if ok {
			lines = append(lines, fmt.Sprintf("%s=%s (was %s)", k, v, old))
		} else {
			lines = append(lines, fmt.Sprintf("%s=%s (was <nil>)", k, v))
		}
	}
	for k := range e.unset {
		old, ok := e.init[k]
		if ok {
			lines = append(lines, fmt.Sprintf("%s=<nil> (was %s)", k, old))
		} else {
			lines = append(lines, fmt.Sprintf("%s=<nil> (was <nil>)", k))
		}
	}
	sort.Strings(lines)
	return strings.Join(lines, "\n")
}