35 lines
882 B
Go
35 lines
882 B
Go
|
package experiment
|
||
|
|
|
||
|
|
// ID represents an experimental feature.
|
||
|
|
//
|
||
|
|
// The global vars defined on this package should be used as ID values.
|
||
|
|
// This interface is purposely not implement-able outside of this package
|
||
|
|
// so that we can rely on the Go compiler to enforce all experiment references.
|
||
|
|
type ID interface {
|
||
|
|
Env() string
|
||
|
|
Flag() string
|
||
|
|
Default() bool
|
||
|
|
|
||
|
|
unexported() // So the ID can't be implemented externally.
|
||
|
|
}
|
||
|
|
|
||
|
|
// basicID implements ID.
|
||
|
|
type basicID struct {
|
||
|
|
EnvValue string
|
||
|
|
FlagValue string
|
||
|
|
DefaultValue bool
|
||
|
|
}
|
||
|
|
|
||
|
|
func newBasicID(flag, env string, def bool) ID {
|
||
|
|
return &basicID{
|
||
|
|
EnvValue: env,
|
||
|
|
FlagValue: flag,
|
||
|
|
DefaultValue: def,
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
func (id *basicID) Env() string { return id.EnvValue }
|
||
|
|
func (id *basicID) Flag() string { return id.FlagValue }
|
||
|
|
func (id *basicID) Default() bool { return id.DefaultValue }
|
||
|
|
func (id *basicID) unexported() {}
|