Annoguard

This document describe how to use a New Syntax to Config Proguard base on @Annotation

• Principle and goals see source code.

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Glossary, Rules Definition and Explain

• StrongKeep: neither be renamed, nor be deleted;
• WeakKeep: guarantee not be renamed, but without guarantee not be deleted;
• ReverseKeep: without guarantee not be renamed, but guarantee not be deleted;
• NonKeep: out of the rules above. Means apply proguard default.

Priority

• From high to low in the order: Strong, Weak, Reverse, Non. When be carried over into subclass/subinterface, subclass/subinterface got the same priority.
• Anywhere, if one name be annotated by some different priority but same function of "@KeepXxx"s, the higher one will be applied.

Appoint

• Contain chars $$ means Reverse Keep. e.g: @Keep$$;

• Contain char $ means Strong Keep(exclude Reverse Keep). e.g: @Keep$;

• Does not contain chars above means Weak Keep;

• Does not exist annotation definition of Non Keep, means no need for annotate names;

  Equivalent: all Non Keep types, if any fields of the types be kept, the class names of types be Reverse Kept.
  

• End with e means the function indicated by the words before "e" will be carried over into subclass/subinterface. e.g: @KeepMp$e;

  Note that only when superclass/superinterface did not deleted on proguard task, subclass/subinterface may kept.
  Means must Strong/Reverse Keep superclass/superinterface first.
  

Symbols in the end of @KeepXxx, means the target places the annotation act on.

• V：var, act on variables/fields;

• M：method, act on methods/functions;

• C：constructor, act on constructors;

• p：public (var/method, depend on another symbol is V or M). Does not contains means ignore public/private...;

• s：static (var/method, depend on another symbol is V or M). Does not contains means non static.

  More details see each doc of `@KeepXxx`.
  

Else

• Any annotation in package **.anno.inject, if not be deleted on proguard task, will apply Reverse Keep on the names it act directly on.

概念、规则定义及解释

• 强保留：既不被重命名，又不被删除；
• 弱保留：只确保不被重命名，不保证不被删除；
• 反保留：不保证不被重命名，但确保不被删除；
• 不保留：排除到以上保留名单之外。即应用混淆。

优先级

• 由高到低依次为强、反、弱、不。被延续到子类（接口）的，子类享有相同优先级；
• 任何位置，若被不同优先级的注解同时标注，则会应用较高优先级。

符号约定

• 含有$$字符的为反保留。如：@Keep$$；

• 含有$字符的为强保留(反保留除外)。如：@Keep$；

• 不含以上标识字符的为弱保留；

• 没有用于不保留的标签，即：不加任何标注则为不保留；

  等效性：所有不保留的类型，如果该类型的任一字段被保留了，则效果上该类型名被反保留。
  

• 另：以e结尾的表示将其前面名称表达的功能延续到子类。如：@KeepMp$e。

  需要注意的是：只有父类（接口）没有被混淆删除的情况下，才能延续到子类。
  即：首先需要将父类强保留或反保留。
  

类名@KeepXxx后面的其它字母符号，表示其作用的目标位置。

• V: var, 作用于成员变量或常量；

• M: method, 作用于方法或函数；

• C: constructor, 作用于构造方法；

• p: public (变量或方法，取决于组合的是V还是M)。没有本字符则表示忽略访问权限修饰；

• s: static (变量或方法，取决于组合的是V还是M)。没有则表示非static的。

  细节请参见各注解的源码文档。
  

其它

• 对于包 **.anno.inject 中的任何注解，只要该注解没有被优化掉，就会对其直接作用的内容进行反保留。

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使用方法：

1. 导入annoguard libs:

import from jcenter repository use gradle script:

    repositories {
        jcenter()
    }
    
    dependencies {
        // some code else ...
        compile 'hobby.wei.c.anno:annoguard:1.0.0'
    }
    
    task genProguardConfigFile(type: UnZip ? ) {
        // waiting for me please.
    }

or else from bintray

2. 在主module根目录下的混淆配置文件 proguard-rules.pro（或其他名称）的开头加入下列代码：

    #gradle配置中最好启用优化。即引用'proguard-android-optimize.txt'
    #proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
    
    -include libs/annotations.pro
    
    #如果是以jar包的方式导入的而不是作为库项目，那么需要下面两行：#
    -dontwarn hobby.wei.c.**
    -libraryjars libs/annoguard-1.0.0.jar
    
    -keep class com.google.gson.stream.** { *; }

3. 根据需求在代码中添加@KeepXxx注解。

暂只给出代码中已有的部分示例链接，有任何问题或建议可 联系作者。

• @KeepVp$e 和 @KeepMp$e 的应用示例：AbsJson;

• @Burden 应用示例：L;

• 更多应用示例见：Synthetic.