| package expflag | |
| import "context" | |
| type flagSetKeyT struct{} | |
| var flagSetKey flagSetKeyT | |
| // Context returns a new context with the given FlagSet. | |
| func Context(ctx context.Context, fs FlagSet) context.Context { | |
| return context.WithValue(ctx, flagSetKey, fs) | |
| } | |
| // ContextHas returns true if the given context has the given flag. | |
| func ContextHas(ctx context.Context, flag Flag) bool { | |
| fs, ok := ctx.Value(flagSetKey).(FlagSet) | |
| if !ok { | |
| return false | |
| } | |
| return fs.Has(flag) | |
| } | |