initial cognito

actual

vendor/github.com/lestrrat-go/option/option.go

@@ -0,0 +1,38 @@
+package option
+
+import "fmt"
+
+// Interface defines the minimum interface that an option must fulfill
+type Interface interface {
+	// Ident returns the "identity" of this option, a unique identifier that
+	// can be used to differentiate between options
+	Ident() interface{}
+
+	// Value returns the corresponding value.
+	Value() interface{}
+}
+
+type pair struct {
+	ident interface{}
+	value interface{}
+}
+
+// New creates a new Option
+func New(ident, value interface{}) Interface {
+	return &pair{
+		ident: ident,
+		value: value,
+	}
+}
+
+func (p *pair) Ident() interface{} {
+	return p.ident
+}
+
+func (p *pair) Value() interface{} {
+	return p.value
+}
+
+func (p *pair) String() string {
+	return fmt.Sprintf(`%v(%v)`, p.ident, p.value)
+}