Enum在smali中的形式
2017-12-18 本文已影响26人
SMSM
Class字节码是CompileJavac的产物
Smali文件 是dex反编译后的产物
定义一个枚举类，内部存在多个枚举值。从smali中看，每个枚举值都是一个静态Enum对象，对象的实例化在Class初始化是完成的，Enum对象的属性name是枚举值的名字，比如：『MONDAY』。初始化时存在两份引用，一份在父类Enum的sharedConstantsCache中、一份在自己的WeekEnum中$VALUES数组，调用 WeekEnum.values()走的是自己的数组，调用valueOf走的是父类的遍历查询（Key为class，反射调用静态方法values()，然后再遍历匹配name）。valueOf比较耗时。因为涉及单次反射。
屏幕快照 2017-12-18 下午6.10.22.png
protected Enum(String name, int ordinal) { this.name = name; this.ordinal = ordinal;}
.class public final enum Lcom/meituan/sankuai/erpboss/modules/main/dishmanager/bean/dish/WeekEnum;
.super Ljava/lang/Enum;
.source "WeekEnum.java"
# annotations
.annotation system Ldalvik/annotation/Signature;
value = {
"Ljava/lang/Enum",
"<",
"Lcom/meituan/sankuai/erpboss/modules/main/dishmanager/bean/dish/WeekEnum;",
">;"
}
.end annotation
# static fields
.field private static final synthetic $VALUES:[Lcom/meituan/sankuai/erpboss/modules/main/dishmanager/bean/dish/WeekEnum;
.field public static final enum FRIDAY:Lcom/meituan/sankuai/erpboss/modules/main/dishmanager/bean/dish/WeekEnum;
.field public static final enum MONDAY:Lcom/meituan/sankuai/erpboss/modules/main/dishmanager/bean/dish/WeekEnum;
.field public static final enum SATURDAY:Lcom/meituan/sankuai/erpboss/modules/main/dishmanager/bean/dish/WeekEnum;
.field public static final enum SUNDAY:Lcom/meituan/sankuai/erpboss/modules/main/dishmanager/bean/dish/WeekEnum;
.field public static final enum THURSDAY:Lcom/meituan/sankuai/erpboss/modules/main/dishmanager/bean/dish/WeekEnum;
.field public static final enum TUESDAY:Lcom/meituan/sankuai/erpboss/modules/main/dishmanager/bean/dish/WeekEnum;
.field public static final enum WEDNESDAY:Lcom/meituan/sankuai/erpboss/modules/main/dishmanager/bean/dish/WeekEnum;
# instance fields
.field private id:S
.field private name:I
# direct methods
.method static constructor <clinit>()V
.locals 10
.prologue
const/4 v9, 0x5
const/4 v8, 0x4
const/4 v7, 0x3
const/4 v6, 0x2
const/4 v5, 0x1
.line 10
new-instance v0, Lcom/meituan/sankuai/erpboss/modules/main/dishmanager/bean/dish/WeekEnum;
const-string v1, "MONDAY"
const/4 v2, 0x0
const v3, 0x7f07044c
invoke-direct {v0, v1, v2, v5, v3}, Lcom/meituan/sankuai/erpboss/modules/main/dishmanager/bean/dish/WeekEnum;-><init>(Ljava/lang/String;ISI)V
sput-object v0, Lcom/meituan/sankuai/erpboss/modules/main/dishmanager/bean/dish/WeekEnum;->MONDAY:Lcom/meituan/sankuai/erpboss/modules/main/dishmanager/bean/dish/WeekEnum;
.line 11
new-instance v0, Lcom/meituan/sankuai/erpboss/modules/main/dishmanager/bean/dish/WeekEnum;
const-string v1, "TUESDAY"
const v2, 0x7f070450
invoke-direct {v0, v1, v5, v6, v2}, Lcom/meituan/sankuai/erpboss/modules/main/dishmanager/bean/dish/WeekEnum;-><init>(Ljava/lang/String;ISI)V
sput-object v0, Lcom/meituan/sankuai/erpboss/modules/main/dishmanager/bean/dish/WeekEnum;->TUESDAY:Lcom/meituan/sankuai/erpboss/modules/main/dishmanager/bean/dish/WeekEnum;
.line 12
new-instance v0, Lcom/meituan/sankuai/erpboss/modules/main/dishmanager/bean/dish/WeekEnum;
const-string v1, "WEDNESDAY"
const v2, 0x7f070451
invoke-direct {v0, v1, v6, v7, v2}, Lcom/meituan/sankuai/erpboss/modules/main/dishmanager/bean/dish/WeekEnum;-><init>(Ljava/lang/String;ISI)V
sput-object v0, Lcom/meituan/sankuai/erpboss/modules/main/dishmanager/bean/dish/WeekEnum;->WEDNESDAY:Lcom/meituan/sankuai/erpboss/modules/main/dishmanager/bean/dish/WeekEnum;
.line 13
new-instance v0, Lcom/meituan/sankuai/erpboss/modules/main/dishmanager/bean/dish/WeekEnum;
const-string v1, "THURSDAY"
const v2, 0x7f07044f
invoke-direct {v0, v1, v7, v8, v2}, Lcom/meituan/sankuai/erpboss/modules/main/dishmanager/bean/dish/WeekEnum;-><init>(Ljava/lang/String;ISI)V
sput-object v0, Lcom/meituan/sankuai/erpboss/modules/main/dishmanager/bean/dish/WeekEnum;->THURSDAY:Lcom/meituan/sankuai/erpboss/modules/main/dishmanager/bean/dish/WeekEnum;
.line 14
new-instance v0, Lcom/meituan/sankuai/erpboss/modules/main/dishmanager/bean/dish/WeekEnum;
const-string v1, "FRIDAY"
const v2, 0x7f07044b
invoke-direct {v0, v1, v8, v9, v2}, Lcom/meituan/sankuai/erpboss/modules/main/dishmanager/bean/dish/WeekEnum;-><init>(Ljava/lang/String;ISI)V
sput-object v0, Lcom/meituan/sankuai/erpboss/modules/main/dishmanager/bean/dish/WeekEnum;->FRIDAY:Lcom/meituan/sankuai/erpboss/modules/main/dishmanager/bean/dish/WeekEnum;
.line 15
new-instance v0, Lcom/meituan/sankuai/erpboss/modules/main/dishmanager/bean/dish/WeekEnum;
const-string v1, "SATURDAY"
const/4 v2, 0x6
const v3, 0x7f07044d
invoke-direct {v0, v1, v9, v2, v3}, Lcom/meituan/sankuai/erpboss/modules/main/dishmanager/bean/dish/WeekEnum;-><init>(Ljava/lang/String;ISI)V
sput-object v0, Lcom/meituan/sankuai/erpboss/modules/main/dishmanager/bean/dish/WeekEnum;->SATURDAY:Lcom/meituan/sankuai/erpboss/modules/main/dishmanager/bean/dish/WeekEnum;
.line 16
new-instance v0, Lcom/meituan/sankuai/erpboss/modules/main/dishmanager/bean/dish/WeekEnum;
const-string v1, "SUNDAY"
const/4 v2, 0x6
const/4 v3, 0x7
const v4, 0x7f07044e
invoke-direct {v0, v1, v2, v3, v4}, Lcom/meituan/sankuai/erpboss/modules/main/dishmanager/bean/dish/WeekEnum;-><init>(Ljava/lang/String;ISI)V
sput-object v0, Lcom/meituan/sankuai/erpboss/modules/main/dishmanager/bean/dish/WeekEnum;->SUNDAY:Lcom/meituan/sankuai/erpboss/modules/main/dishmanager/bean/dish/WeekEnum;
.line 9
const/4 v0, 0x7
new-array v0, v0, [Lcom/meituan/sankuai/erpboss/modules/main/dishmanager/bean/dish/WeekEnum;
const/4 v1, 0x0
sget-object v2, Lcom/meituan/sankuai/erpboss/modules/main/dishmanager/bean/dish/WeekEnum;->MONDAY:Lcom/meituan/sankuai/erpboss/modules/main/dishmanager/bean/dish/WeekEnum;
aput-object v2, v0, v1
sget-object v1, Lcom/meituan/sankuai/erpboss/modules/main/dishmanager/bean/dish/WeekEnum;->TUESDAY:Lcom/meituan/sankuai/erpboss/modules/main/dishmanager/bean/dish/WeekEnum;
aput-object v1, v0, v5
sget-object v1, Lcom/meituan/sankuai/erpboss/modules/main/dishmanager/bean/dish/WeekEnum;->WEDNESDAY:Lcom/meituan/sankuai/erpboss/modules/main/dishmanager/bean/dish/WeekEnum;
aput-object v1, v0, v6
sget-object v1, Lcom/meituan/sankuai/erpboss/modules/main/dishmanager/bean/dish/WeekEnum;->THURSDAY:Lcom/meituan/sankuai/erpboss/modules/main/dishmanager/bean/dish/WeekEnum;
aput-object v1, v0, v7
sget-object v1, Lcom/meituan/sankuai/erpboss/modules/main/dishmanager/bean/dish/WeekEnum;->FRIDAY:Lcom/meituan/sankuai/erpboss/modules/main/dishmanager/bean/dish/WeekEnum;
aput-object v1, v0, v8
sget-object v1, Lcom/meituan/sankuai/erpboss/modules/main/dishmanager/bean/dish/WeekEnum;->SATURDAY:Lcom/meituan/sankuai/erpboss/modules/main/dishmanager/bean/dish/WeekEnum;
aput-object v1, v0, v9
const/4 v1, 0x6
sget-object v2, Lcom/meituan/sankuai/erpboss/modules/main/dishmanager/bean/dish/WeekEnum;->SUNDAY:Lcom/meituan/sankuai/erpboss/modules/main/dishmanager/bean/dish/WeekEnum;
aput-object v2, v0, v1
sput-object v0, Lcom/meituan/sankuai/erpboss/modules/main/dishmanager/bean/dish/WeekEnum;->$VALUES:[Lcom/meituan/sankuai/erpboss/modules/main/dishmanager/bean/dish/WeekEnum;
return-void
.end method
.method private constructor <init>(Ljava/lang/String;ISI)V
.locals 0
.param p3, "id" # S
.param p4, "name" # I
.annotation system Ldalvik/annotation/Signature;
value = {
"(SI)V"
}
.end annotation
.prologue
.line 21
invoke-direct {p0, p1, p2}, Ljava/lang/Enum;-><init>(Ljava/lang/String;I)V
.line 22
iput-short p3, p0, Lcom/meituan/sankuai/erpboss/modules/main/dishmanager/bean/dish/WeekEnum;->id:S
.line 23
iput p4, p0, Lcom/meituan/sankuai/erpboss/modules/main/dishmanager/bean/dish/WeekEnum;->name:I
.line 24
return-void
.end method
.method public static getWeekById(I)Lcom/meituan/sankuai/erpboss/modules/main/dishmanager/bean/dish/WeekEnum;
.locals 5
.param p0, "id" # I
.prologue
.line 43
invoke-static {}, Lcom/meituan/sankuai/erpboss/modules/main/dishmanager/bean/dish/WeekEnum;->values()[Lcom/meituan/sankuai/erpboss/modules/main/dishmanager/bean/dish/WeekEnum;
move-result-object v2
array-length v3, v2
const/4 v1, 0x0
:goto_0
if-ge v1, v3, :cond_1
aget-object v0, v2, v1
.line 44
.local v0, "week":Lcom/meituan/sankuai/erpboss/modules/main/dishmanager/bean/dish/WeekEnum;
invoke-virtual {v0}, Lcom/meituan/sankuai/erpboss/modules/main/dishmanager/bean/dish/WeekEnum;->getId()S
move-result v4
if-ne v4, p0, :cond_0
.line 48
.end local v0 # "week":Lcom/meituan/sankuai/erpboss/modules/main/dishmanager/bean/dish/WeekEnum;
:goto_1
return-object v0
.line 43
.restart local v0 # "week":Lcom/meituan/sankuai/erpboss/modules/main/dishmanager/bean/dish/WeekEnum;
:cond_0
add-int/lit8 v1, v1, 0x1
goto :goto_0
.line 48
.end local v0 # "week":Lcom/meituan/sankuai/erpboss/modules/main/dishmanager/bean/dish/WeekEnum;
:cond_1
const/4 v0, 0x0
goto :goto_1
.end method
.method public static valueOf(Ljava/lang/String;)Lcom/meituan/sankuai/erpboss/modules/main/dishmanager/bean/dish/WeekEnum;
.locals 1
.param p0, "name" # Ljava/lang/String;
.prologue
.line 9
const-class v0, Lcom/meituan/sankuai/erpboss/modules/main/dishmanager/bean/dish/WeekEnum;
invoke-static {v0, p0}, Ljava/lang/Enum;->valueOf(Ljava/lang/Class;Ljava/lang/String;)Ljava/lang/Enum;
move-result-object v0
check-cast v0, Lcom/meituan/sankuai/erpboss/modules/main/dishmanager/bean/dish/WeekEnum;
return-object v0
.end method
.method public static values()[Lcom/meituan/sankuai/erpboss/modules/main/dishmanager/bean/dish/WeekEnum;
.locals 1
.prologue
.line 9
sget-object v0, Lcom/meituan/sankuai/erpboss/modules/main/dishmanager/bean/dish/WeekEnum;->$VALUES:[Lcom/meituan/sankuai/erpboss/modules/main/dishmanager/bean/dish/WeekEnum;
invoke-virtual {v0}, [Lcom/meituan/sankuai/erpboss/modules/main/dishmanager/bean/dish/WeekEnum;->clone()Ljava/lang/Object;
move-result-object v0
check-cast v0, [Lcom/meituan/sankuai/erpboss/modules/main/dishmanager/bean/dish/WeekEnum;
return-object v0
.end method
# virtual methods
.method public getId()S
.locals 1
.prologue
.line 27
iget-short v0, p0, Lcom/meituan/sankuai/erpboss/modules/main/dishmanager/bean/dish/WeekEnum;->id:S
return v0
.end method
.method public getName()I
.locals 1
.prologue
.line 35
iget v0, p0, Lcom/meituan/sankuai/erpboss/modules/main/dishmanager/bean/dish/WeekEnum;->name:I
return v0
.end method
.method public setId(S)V
.locals 0
.param p1, "id" # S
.prologue
.line 31
iput-short p1, p0, Lcom/meituan/sankuai/erpboss/modules/main/dishmanager/bean/dish/WeekEnum;->id:S
.line 32
return-void
.end method
.method public setName(I)V
.locals 0
.param p1, "name" # I
.prologue
.line 39
iput p1, p0, Lcom/meituan/sankuai/erpboss/modules/main/dishmanager/bean/dish/WeekEnum;->name:I
.line 40
return-void
.end method
public enum WeekEnum {
MONDAY((short) 1, R.string.week_monday),
TUESDAY((short) 2, R.string.week_tuesday),
WEDNESDAY((short) 3, R.string.week_wednesday),
THURSDAY((short) 4, R.string.week_thursday),
FRIDAY((short) 5, R.string.week_friday),
SATURDAY((short) 6, R.string.week_saturday),
SUNDAY((short) 7, R.string.week_sunday);
private short id;
private int name;
WeekEnum(short id, int name) {
this.id = id;
this.name = name;
}
public short getId() {
return id;
}
public void setId(short id) {
this.id = id;
}
public int getName() {
return name;
}
public void setName(int name) {
this.name = name;
}
public static WeekEnum getWeekById(int id) {
for (WeekEnum week : WeekEnum.values()) {
if (week.getId() == id) {
return week;
}
}
return null;
}
}
