bridge

Author: coolpest

Bridge/cmd/bridge_test.go

@@ -0,0 +1,35 @@
+package cmd
+
+import (
+	"github.com/i-coder-robot/design-patterns-in-golang/Bridge/list"
+	"github.com/i-coder-robot/design-patterns-in-golang/Bridge/todo"
+	"testing"
+)
+
+func Test(t *testing.T)  {
+	myToDos := factoryToDo("any")
+	rendering :=factoryList("bullet")
+	myToDos.SetList(rendering)
+
+	myToDos.Add("study")
+	myToDos.Add("sports")
+	myToDos.Add("work")
+	myToDos.Add("happy")
+
+	myToDos.Print()
+}
+
+
+func factoryToDo(s string) todo.ToDo{
+	if s=="unique"{
+		return todo.NewUnique()
+	}
+	return todo.NewAny()
+}
+
+func factoryList(s string) list.List{
+	if s == "plain"{
+		return list.NewPlain()
+	}
+	return list.NewBullet('*')
+}

Bridge/list/bullet.go

@@ -0,0 +1,17 @@
+package list
+
+import "fmt"
+
+type Bullet struct {
+	Bullet rune
+}
+
+func NewBullet(b rune) *Bullet {
+	return &Bullet{Bullet: b}
+}
+
+func (b *Bullet) Print(todos []string) {
+	for _, v := range todos {
+		fmt.Println("\t", string(b.Bullet), v)
+	}
+}

Bridge/list/list.go

@@ -0,0 +1,5 @@
+package list
+
+type List interface {
+	Print([]string)
+}

Bridge/list/plain.go

@@ -0,0 +1,16 @@
+package list
+
+import "fmt"
+
+type Plain struct {
+}
+
+func NewPlain() *Plain {
+	return &Plain{}
+}
+
+func (p *Plain) Print(todos []string){
+	for _,v:=range todos{
+		fmt.Println("\t",v)
+	}
+}

Bridge/todo/any.go

@@ -0,0 +1,24 @@
+package todo
+
+import "github.com/i-coder-robot/design-patterns-in-golang/Bridge/list"
+
+type Any struct{
+	rendering list.List
+	todos []string
+}
+
+func NewAny() *Any {
+	return &Any{}
+}
+
+func (a *Any) SetList(l list.List){
+	a.rendering = l
+}
+
+func (a *Any) Add(name string){
+	a.todos= append(a.todos, name)
+}
+
+func (a *Any) Print(){
+	a.rendering.Print(a.todos)
+}

Bridge/todo/todo.go

@@ -0,0 +1,9 @@
+package todo
+
+import "github.com/i-coder-robot/design-patterns-in-golang/Bridge/list"
+
+type ToDo interface {
+	SetList(l list.List)
+	Add(name string)
+	Print()
+}

Bridge/todo/unique.go

@@ -0,0 +1,30 @@
+package todo
+
+import "github.com/i-coder-robot/design-patterns-in-golang/Bridge/list"
+
+type Unique struct {
+	rendering list.List
+	todos []string
+}
+
+func NewUnique() *Unique{
+	return &Unique{}
+}
+
+func (u *Unique) Add(name string){
+	for _,v:=range u.todos{
+		if name == v{
+			return
+		}
+	}
+
+	u.todos = append(u.todos,name)
+}
+
+func (u *Unique) Print() {
+	u.rendering.Print(u.todos)
+}
+
+func (u *Unique) SetList(l list.List)  {
+	u.rendering=l
+}