add code content for state pattern

behavior/08_interpreter/README.md

@@ -16,3 +16,9 @@ A "->"  B 表示  A说，B听,此时B不能发言。
 A "<-"  B 表示  B说，A听,此时B不能发言。
 A "<->" B 表示  A 和 B 可以自由发言。
 
+解释器模式中的关键角色：
+
+		1. 表达式 一般就是一串带解析的内容流，可能是字符串，也可能是字节流等
+		2. 表达式解释类，一般就是解析器
+    3. 表达式子类型解析器，对于表达式中解析到的不同情况，交给不同的解析子类去处理。
+

behavior/10_state/README.md

@@ -1,3 +1,11 @@
 # 状态模式
 
 状态模式的目的就是设计一个状态机，用状态的改变/流转驱动行为变化，前提是需要知道所有的状态，否则，该模式有益于根据已知状态扩展行为。
+
+
+我们打游戏，游戏角色的拟人状态有：走，跑，原地不动,休息
+
+状态模式的关键角色：
+		Context: 拥有多种状态的上下文对象(struct), 持有状态属性State
+		State: 封装特定状态行为的interface
+		ConcreteState: 具体的状态，继承接口State，不同的状态执行Context的不同行为

behavior/10_state/state.go

@@ -1,96 +1,5 @@
 package state
 
-import "fmt"
+//IRobot 代表机器人
-
+type IRobot interface {
-type Week interface {
-	Today()
-	Next(*DayContext)
-}
-
-type DayContext struct {
-	today Week
-}
-
-func NewDayContext() *DayContext {
-	return &DayContext{
-		today: &Sunday{},
-	}
-}
-
-func (d *DayContext) Today() {
-	d.today.Today()
-}
-
-func (d *DayContext) Next() {
-	d.today.Next(d)
-}
-
-type Sunday struct{}
-
-func (*Sunday) Today() {
-	fmt.Printf("Sunday\n")
-}
-
-func (*Sunday) Next(ctx *DayContext) {
-	ctx.today = &Monday{}
-}
-
-type Monday struct{}
-
-func (*Monday) Today() {
-	fmt.Printf("Monday\n")
-}
-
-func (*Monday) Next(ctx *DayContext) {
-	ctx.today = &Tuesday{}
-}
-
-type Tuesday struct{}
-
-func (*Tuesday) Today() {
-	fmt.Printf("Tuesday\n")
-}
-
-func (*Tuesday) Next(ctx *DayContext) {
-	ctx.today = &Wednesday{}
-}
-
-type Wednesday struct{}
-
-func (*Wednesday) Today() {
-	fmt.Printf("Wednesday\n")
-}
-
-func (*Wednesday) Next(ctx *DayContext) {
-	ctx.today = &Thursday{}
-}
-
-type Thursday struct{}
-
-func (*Thursday) Today() {
-	fmt.Printf("Thursday\n")
-}
-
-func (*Thursday) Next(ctx *DayContext) {
-	ctx.today = &Friday{}
-}
-
-type Friday struct{}
-
-func (*Friday) Today() {
-	fmt.Printf("Friday\n")
-}
-
-func (*Friday) Next(ctx *DayContext) {
-	ctx.today = &Saturday{}
-}
-
-type Saturday struct{}
-
-func (*Saturday) Today() {
-	fmt.Printf("Saturday\n")
-}
-
-func (*Saturday) Next(ctx *DayContext) {
-	ctx.today = &Sunday{}
 }

behavior/10_state/state_clock.go

@@ -0,0 +1,48 @@
+// Package state is an example of the State Pattern.
+package state
+
+////////////////////////////////
+//闹装有两种状态，震铃状态，非震铃状态
+
+// MobileAlertStater provides a common interface for various states.
+type MobileAlertStater interface {
+	Alert() string
+}
+
+// MobileAlert implements an alert depending on its state.
+type MobileAlert struct {
+	state MobileAlertStater
+}
+
+// Alert returns a alert string
+func (a *MobileAlert) Alert() string {
+	return a.state.Alert()
+}
+
+// SetState changes state
+func (a *MobileAlert) SetState(state MobileAlertStater) {
+	a.state = state
+}
+
+// NewMobileAlert is the MobileAlert constructor.
+func NewMobileAlert() *MobileAlert {
+	return &MobileAlert{state: &MobileAlertVibration{}}
+}
+
+// MobileAlertVibration implements vibration alert
+type MobileAlertVibration struct {
+}
+
+// Alert returns a alert string
+func (a *MobileAlertVibration) Alert() string {
+	return "vibrating humming ... vibrating humming...vibrating humming..."
+}
+
+// MobileAlertSong implements beep alert
+type MobileAlertSong struct {
+}
+
+// Alert returns a alert string
+func (a *MobileAlertSong) Alert() string {
+	return "sun rise ,get up ,get up get up..."
+}

behavior/10_state/state_test.go

@@ -1,6 +1,27 @@
 package state
 
-func ExampleWeek() {
+import "testing"
+
+func TestState(t *testing.T) {
+
+	expect := "vibrating humming ... vibrating humming...vibrating humming..." +
+		"vibrating humming ... vibrating humming...vibrating humming..." +
+		"sun rise ,get up ,get up get up..."
+
+	mobile := NewMobileAlert()
+
+	result := mobile.Alert()
+	result += mobile.Alert()
+
+	mobile.SetState(&MobileAlertSong{})
+
+	result += mobile.Alert()
+
+	if result != expect {
+		t.Errorf("Expect result to equal %s, but %s.\n", expect, result)
+	}
+}
+func TestWeeks(t *testing.T) {
 	ctx := NewDayContext()
 	todayAndNext := func() {
 		ctx.Today()

behavior/10_state/state_weeks.go

@@ -0,0 +1,96 @@
+package state
+
+import "fmt"
+
+type Week interface {
+	Today()
+	Next(*DayContext)
+}
+
+type DayContext struct {
+	today Week
+}
+
+func NewDayContext() *DayContext {
+	return &DayContext{
+		today: &Sunday{},
+	}
+}
+
+func (d *DayContext) Today() {
+	d.today.Today()
+}
+
+func (d *DayContext) Next() {
+	d.today.Next(d)
+}
+
+type Sunday struct{}
+
+func (*Sunday) Today() {
+	fmt.Printf("Sunday\n")
+}
+
+func (*Sunday) Next(ctx *DayContext) {
+	ctx.today = &Monday{}
+}
+
+type Monday struct{}
+
+func (*Monday) Today() {
+	fmt.Printf("Monday\n")
+}
+
+func (*Monday) Next(ctx *DayContext) {
+	ctx.today = &Tuesday{}
+}
+
+type Tuesday struct{}
+
+func (*Tuesday) Today() {
+	fmt.Printf("Tuesday\n")
+}
+
+func (*Tuesday) Next(ctx *DayContext) {
+	ctx.today = &Wednesday{}
+}
+
+type Wednesday struct{}
+
+func (*Wednesday) Today() {
+	fmt.Printf("Wednesday\n")
+}
+
+func (*Wednesday) Next(ctx *DayContext) {
+	ctx.today = &Thursday{}
+}
+
+type Thursday struct{}
+
+func (*Thursday) Today() {
+	fmt.Printf("Thursday\n")
+}
+
+func (*Thursday) Next(ctx *DayContext) {
+	ctx.today = &Friday{}
+}
+
+type Friday struct{}
+
+func (*Friday) Today() {
+	fmt.Printf("Friday\n")
+}
+
+func (*Friday) Next(ctx *DayContext) {
+	ctx.today = &Saturday{}
+}
+
+type Saturday struct{}
+
+func (*Saturday) Today() {
+	fmt.Printf("Saturday\n")
+}
+
+func (*Saturday) Next(ctx *DayContext) {
+	ctx.today = &Sunday{}
+}