struct and interfaces test(s) (7c7bdc8e) · Commits · bsmrgo / playground

sai/sai.go

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Original line number	Diff line number	Diff line
		package sai

		import "fmt"

		/*
		* Structs and Interfaces
		*
		* Various tests with struct and interfaces.
		*/

		type Baser interface {
		V() bool
		I() bool
		Data() int
		}

		type Base struct {
		Visible bool
		invisible bool
		}

		func NewBase(v, i bool) Base {
		return Base{
		Visible: v,
		invisible: i,
		}
		}

		func (s Base) V() bool {
		return s.Visible
		}

		func (s Base) I() bool {
		return s.invisible
		}

		func (s Base) Data() int {
		panic("no data here")
		}

		func (s Base) String() string {
		return fmt.Sprintf("Base/s:%t/i:%t/none", s.Visible, s.invisible)
		}

		type Implicit struct {
		Base
		Value int
		}

		func NewImplicit(v, i bool, d int) Implicit {
		return Implicit{
		NewBase(v, i),
		d,
		}
		}

		func (s Implicit) String() string {
		return fmt.Sprintf("Implicit/s:%t/i:%t/d:%d", s.Visible, s.invisible, s.Value)
		}

		func (s Implicit) Data() int {
		return s.Value
		}

		type Explicit struct {
		Root Base
		Value int
		}

		func NewExplicit(v, i bool, d int) Explicit {
		return Explicit{
		Root: NewBase(v, i),
		Value: d,
		}
		}

		func (s Explicit) String() string {
		return fmt.Sprintf("Explicit/s:%t/i:%t/d:%d", s.Root.Visible, s.Root.invisible, s.Value)
		}

		func (s Explicit) V() bool {
		return s.Root.Visible
		}

		func (s Explicit) I() bool {
		return s.Root.invisible
		}

		func (s Explicit) Data() int {
		return s.Value
		}

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