├── .gitignore
├── .idea
├── compiler.xml
├── copyright
│ └── profiles_settings.xml
├── gradle.xml
├── misc.xml
├── modules.xml
├── runConfigurations.xml
└── vcs.xml
├── README.md
├── app
├── .gitignore
├── build.gradle
├── proguard-rules.pro
└── src
│ └── main
│ ├── AndroidManifest.xml
│ ├── java
│ └── com
│ │ └── zyao89
│ │ └── demoabstractprocessor
│ │ └── MainActivity.java
│ └── res
│ ├── layout
│ └── activity_main.xml
│ ├── mipmap-hdpi
│ └── ic_launcher.png
│ ├── mipmap-mdpi
│ └── ic_launcher.png
│ ├── mipmap-xhdpi
│ └── ic_launcher.png
│ ├── mipmap-xxhdpi
│ └── ic_launcher.png
│ ├── mipmap-xxxhdpi
│ └── ic_launcher.png
│ ├── values-w820dp
│ └── dimens.xml
│ └── values
│ ├── colors.xml
│ ├── dimens.xml
│ ├── strings.xml
│ └── styles.xml
├── build.gradle
├── capture
└── gif01.gif
├── compiler
├── .gitignore
├── build.gradle
└── src
│ └── main
│ └── java
│ └── com
│ └── zyao89
│ ├── MyProcessor.java
│ └── ZyaoAnnotation.java
├── gradle.properties
├── gradle
└── wrapper
│ ├── gradle-wrapper.jar
│ └── gradle-wrapper.properties
├── gradlew
├── gradlew.bat
└── settings.gradle
/.gitignore:
--------------------------------------------------------------------------------
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2 | .gradle
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5 | .DS_Store
6 | /build
7 | /captures
8 | .externalNativeBuild
9 | app/libs/
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12 |
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/README.md:
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1 | # AbstractProcessor Test Demo
2 |
3 | `作者:Zyao89;转载请保留此行,谢谢;`
4 |
5 | ---
6 |
7 | Java中的注解(Annotation)是一个很神奇的东西,特别现在有很多Android库都是使用注解的方式来实现的。
8 | 我们并不讨论那些在运行时(Runtime)通过反射机制运行处理的注解,而是讨论在编译时(Compile time)处理的注解。下面便入手学习下Java注解处理器。
9 |
10 | ### 基本概念
11 | **注解处理器**是一个在javac中的,用来编译时扫描和处理的注解的工具。你可以为特定的注解,注册你自己的注解处理器。
12 | 注解处理器可以生成Java代码,这些生成的Java代码会组成 `.java` 文件,但不能修改已经存在的Java类(即不能向已有的类中添加方法)。而这些生成的Java文件,会同时与其他普通的手写Java源代码一起被javac编译。
13 |
14 |
15 | ### 抽象处理器 AbstractProcessor
16 | > import javax.annotation.processing.AbstractProcessor;
17 |
18 | 我们每一个注解处理器都要继承于AbstractProcessor,如下所示:
19 |
20 | ```java
21 | public class MyProcessor extends AbstractProcessor
22 | {
23 | @Override
24 | public synchronized void init(ProcessingEnvironment processingEnvironment)
25 | {
26 | super.init(processingEnvironment);
27 | }
28 |
29 | @Override
30 | public boolean process(Set extends TypeElement> set, RoundEnvironment roundEnvironment)
31 | {
32 | return false;
33 | }
34 |
35 | @Override
36 | public Set getSupportedAnnotationTypes()
37 | {
38 | return super.getSupportedAnnotationTypes();
39 | }
40 |
41 | @Override
42 | public SourceVersion getSupportedSourceVersion()
43 | {
44 | return super.getSupportedSourceVersion();
45 | }
46 | }
47 | ```
48 |
49 | * `init(ProcessingEnvironment processingEnvironment)`: 每一个注解处理器类都必须有一个空的构造函数。然而,这里有一个特殊的init()方法,它会被注解处理工具调用,并输入ProcessingEnviroment参数。ProcessingEnviroment提供很多有用的**工具类Elements,Types和Filer**。后面我们将看到详细的内容。
50 | * `process(Set extends TypeElement> set, RoundEnvironment roundEnvironment)`: 这相当于每个处理器的主函数main()。你在这里写你的扫描、评估和处理注解的代码,以及生成Java文件。输入参数RoundEnviroment,可以让你查询出包含特定注解的被注解元素。后面我们将看到详细的内容。
51 | * `getSupportedAnnotationTypes()`: 这里你必须指定,这个注解处理器是注册给哪个注解的。注意,它的返回值是一个字符串的集合,包含本处理器想要处理的注解类型的合法全称。换句话说,你在这里定义你的注解处理器注册到哪些注解上。
52 | * `getSupportedSourceVersion()`: 用来指定你使用的Java版本。通常这里返回SourceVersion.latestSupported()。然而,如果你有足够的理由只支持Java 7的话,你也可以返回SourceVersion.RELEASE_7。我推荐你使用前者。
53 |
54 | 在Java 7以后,你也可以使用注解来代替getSupportedAnnotationTypes()和getSupportedSourceVersion(),像这样:
55 |
56 | ```java
57 | @SupportedSourceVersion(SourceVersion.RELEASE_7)
58 | @SupportedAnnotationTypes({
59 | "com.zyao89.ZyaoAnnotation"
60 | })
61 | public class MyProcessor extends AbstractProcessor
62 | {
63 | @Override
64 | public synchronized void init(ProcessingEnvironment processingEnvironment)
65 | {
66 | super.init(processingEnvironment);
67 | }
68 |
69 | @Override
70 | public boolean process(Set extends TypeElement> set, RoundEnvironment roundEnvironment)
71 | {
72 | return false;
73 | }
74 | }
75 | ```
76 |
77 | ### 简单实践
78 |
79 | 1. 首先我们来创建一个 `@ZyaoAnnotation` 注解,后面我们将用这个注解来自动生成一个java文件。
80 |
81 | 我们先来看下 `@ ZyaoAnnotation ` 注解:
82 | ```java
83 | @Target({ElementType.TYPE})
84 | @Retention(RetentionPolicy.CLASS)
85 | public @interface ZyaoAnnotation
86 | {
87 | String name() default "undefined";
88 |
89 | String text() default "";
90 | }
91 | ```
92 |
93 | 这时候我们可以在需要注解的类上增加我们的注解了,如:
94 | ```java
95 | @ZyaoAnnotation(
96 | name = "Zyao",
97 | text = "Hello !!! Welcome "
98 | )
99 | public class MainActivity extends AppCompatActivity
100 | {
101 |
102 | @Override
103 | protected void onCreate(Bundle savedInstanceState)
104 | {
105 | super.onCreate(savedInstanceState);
106 | setContentView(R.layout.activity_main);
107 | }
108 | }
109 | ```
110 |
111 | 这时,注解都注解完了,那我们该怎么运行呢?请看下面。
112 |
113 | ### 处理器
114 | 这里我们通过代码加注释的方式,来一步步构建我们想要的处理器。代码如下:
115 | ```java
116 | @AutoService(Processor.class)
117 | public class MyProcessor extends AbstractProcessor
118 | {
119 | private Types mTypeUtils;
120 | private Elements mElementUtils;
121 | private Filer mFiler;
122 | private Messager mMessager;
123 |
124 | @Override
125 | public synchronized void init(ProcessingEnvironment processingEnvironment)
126 | {
127 | super.init(processingEnvironment);
128 |
129 | //初始化我们需要的基础工具
130 | mTypeUtils = processingEnv.getTypeUtils();
131 | mElementUtils = processingEnv.getElementUtils();
132 | mFiler = processingEnv.getFiler();
133 | mMessager = processingEnv.getMessager();
134 | }
135 |
136 | @Override
137 | public SourceVersion getSupportedSourceVersion()
138 | {
139 | //支持的java版本
140 | return SourceVersion.latestSupported();
141 | }
142 |
143 | @Override
144 | public Set getSupportedAnnotationTypes()
145 | {
146 | //支持的注解
147 | Set annotations = new LinkedHashSet<>();
148 | annotations.add(ZyaoAnnotation.class.getCanonicalName());
149 | return annotations;
150 | }
151 |
152 | @Override
153 | public boolean process(Set extends TypeElement> set, RoundEnvironment roundEnvironment)
154 | {
155 | //这里开始处理我们的注解解析了,以及生成Java文件
156 | return false;
157 | }
158 | }
159 | ```
160 |
161 | 大家看到第一行`@AutoService(Processor.class)` 这个有木有?这是一个注解处理器,是Google开发的,用来生成META-INF/services/javax.annotation.processing.Processor文件的。
162 |
163 | Gradle引入方式:
164 | > compile 'com.google.auto.service:auto-service:1.0-rc2'
165 |
166 | 在`getSupportedAnnotationTypes()`中,我们指定本处理器将处理 `@ZyaoAnnotation` 注解。
167 |
168 |
169 | ### 基础工具解析
170 |
171 | 在init()中我们获得如下引用:
172 |
173 | - **Elements**:一个用来处理Element的工具类,源代码的每一个部分都是一个特定类型的Element,例如:
174 |
175 | ```java
176 | package com.example; // PackageElement
177 |
178 | public class Foo { // TypeElement
179 |
180 | private int a; // VariableElement
181 | private Foo other; // VariableElement
182 |
183 | public Foo () {} // ExecuteableElement
184 |
185 | public void setA ( // ExecuteableElement
186 | int newA // TypeElement
187 | ) {}
188 | }
189 | ```
190 | 举例来说,假如你有一个代表public class Foo类的TypeElement元素,你可以遍历它的孩子,如下:
191 | ```java
192 | TypeElement fooClass = ... ;
193 | for (Element e : fooClass.getEnclosedElements()){ // iterate over children
194 | Element parent = e.getEnclosingElement(); // parent == fooClass
195 | }
196 | ```
197 | TypeElement并不包含类本身的信息。你可以从TypeElement中获取类的名字,但是你获取不到类的信息,例如它的父类。这种信息需要通过TypeMirror获取。你可以通过调用elements.asType()获取元素的TypeMirror。
198 |
199 |
200 | - **Types**:一个用来处理TypeMirror的工具类;(后面会使用到,在进行讲解)
201 |
202 | - **Filer**:正如这个名字所示,使用Filer你可以创建文件。
203 |
204 |
205 | ### 搜索@ZyaoAnnotation注解
206 | ```
207 | @Override
208 | public boolean process(Set extends TypeElement> set, RoundEnvironment roundEnvironment)
209 | {//这里开始处理我们的注解解析了,以及生成Java文件
210 |
211 | // 遍历所有被注解了@Factory的元素
212 | for (Element annotatedElement : roundEnvironment.getElementsAnnotatedWith(ZyaoAnnotation.class)) {
213 | ...
214 | }
215 |
216 |
217 | return false;
218 | }
219 | ```
220 |
221 | `roundEnvironment.getElementsAnnotatedWith(ZyaoAnnotation.class)`返回所有被注解了@Factory的元素的列表。你可能已经注意到,我们并没有说“所有被注解了@Factory的类的列表”,因为它真的是返回Element的列表。请记住:Element可以是类、方法、变量等。所以,接下来,我们必须检查这些Element是否是一个类:
222 |
223 | ```java
224 | // 遍历所有被注解了@Factory的元素
225 | for (Element annotatedElement : roundEnvironment.getElementsAnnotatedWith(ZyaoAnnotation.class)) {
226 | // 检查被注解为@Factory的元素是否是一个类
227 | if (annotatedElement.getKind() != ElementKind.CLASS) {
228 | error(annotatedElement, "Only classes can be annotated with @%s",
229 | ZyaoAnnotation.class.getSimpleName());
230 | return true; // 退出处理
231 | }
232 |
233 | //解析,并生成代码
234 | analysisAnnotated(annotatedElement);
235 | }
236 | ```
237 |
238 | 这里就配合了`TypeMirror`使用`EmentKind`或者`TypeKind`进行元素类型判断。
239 |
240 | `error()`日志和错误信息打印:
241 | ```java
242 | private void error(Element e, String msg, Object... args) {
243 | mMessager.printMessage(
244 | Diagnostic.Kind.ERROR,
245 | String.format(msg, args),
246 | e);
247 | }
248 | ```
249 |
250 | 除了`Diagnostic.Kind.ERROR`日志等级,还有其它,如:
251 | ```java
252 | public static enum Kind {
253 | ERROR,
254 | WARNING,
255 | MANDATORY_WARNING,
256 | NOTE,
257 | OTHER;
258 |
259 | private Kind() {
260 | }
261 | }
262 | ```
263 |
264 | ### 代码生成
265 | 编写解析和生成的代码格式:
266 | ```java
267 | private static final String SUFFIX = "$$ZYAO";
268 |
269 | private void analysisAnnotated(Element classElement)
270 | {
271 | ZyaoAnnotation annotation = classElement.getAnnotation(ZyaoAnnotation.class);
272 | String name = annotation.name();
273 | String text = annotation.text();
274 |
275 | // TypeElement superClassName = mElementUtils.getTypeElement(name);
276 | String newClassName = name + SUFFIX;
277 |
278 | StringBuilder builder = new StringBuilder()
279 | .append("package com.zyao89.demoprocessor.auto;\n\n")
280 | .append("public class ")
281 | .append(newClassName)
282 | .append(" {\n\n") // open class
283 | .append("\tpublic String getMessage() {\n") // open method
284 | .append("\t\treturn \"");
285 |
286 | // this is appending to the return statement
287 | builder.append(text).append(name).append(" !\\n");
288 |
289 |
290 | builder.append("\";\n") // end return
291 | .append("\t}\n") // close method
292 | .append("}\n"); // close class
293 |
294 |
295 | try { // write the file
296 | JavaFileObject source = mFiler.createSourceFile("com.zyao89.demoprocessor.auto."+newClassName);
297 | Writer writer = source.openWriter();
298 | writer.write(builder.toString());
299 | writer.flush();
300 | writer.close();
301 | } catch (IOException e) {
302 | // Note: calling e.printStackTrace() will print IO errors
303 | // that occur from the file already existing after its first run, this is normal
304 | }
305 |
306 | info(">>> analysisAnnotated is finish... <<<");
307 | }
308 | ```
309 | 以上的连接字符串工作,可以使用`JavaPoet`开源库进行编写,提升效率。
310 |
311 | ```gradle
312 | compile 'com.squareup:javapoet:1.7.0'
313 | ```
314 |
315 | 最后build一下工程,生成最终的java文件 `Zyao$$ZYAO.java`
316 |
317 | > 生成的文件路径:
318 | /DemoAbstractProcessor/app/build/generated/source/apt/debug/com/zyao89/demoprocessor/auto/Zyao$$ZYAO.java
319 |
320 | 文件内容:
321 |
322 | ```java
323 | package com.zyao89.demoprocessor.auto;
324 |
325 | public class Zyao$$ZYAO {
326 |
327 | public String getMessage() {
328 | return "Hello !!! Welcome Zyao !\n";
329 | }
330 | }
331 | ```
332 |
333 | ### 运行
334 |
335 | ```java
336 | @ZyaoAnnotation(
337 | name = "Zyao",
338 | text = "Hello !!! Welcome "
339 | )
340 | public class MainActivity extends AppCompatActivity
341 | {
342 |
343 | @Override
344 | protected void onCreate(Bundle savedInstanceState)
345 | {
346 | super.onCreate(savedInstanceState);
347 | setContentView(R.layout.activity_main);
348 |
349 | }
350 |
351 | public void changeText(View view) {
352 | Zyao$$ZYAO zyao$$ZYAO = new Zyao$$ZYAO();
353 | String message = zyao$$ZYAO.getMessage();
354 | ((TextView)view).setText(message);
355 | }
356 | }
357 | ```
358 |
359 | 最终运行我们的程序,点击文本,可得到我们的`getMessage`内容。
360 |
361 |
362 | ### 演示图
363 | 
364 |
365 | ---
366 |
367 | `作者:Zyao89;转载请保留此行,谢谢;`
368 |
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/app/.gitignore:
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1 | /build
2 |
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/app/build.gradle:
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1 | apply plugin: 'com.android.application'
2 |
3 | android {
4 | compileSdkVersion 25
5 | buildToolsVersion "25.0.2"
6 | defaultConfig {
7 | applicationId "com.zyao89.demoabstractprocessor"
8 | minSdkVersion 15
9 | targetSdkVersion 25
10 | versionCode 1
11 | versionName "1.0"
12 | testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
13 | }
14 | buildTypes {
15 | release {
16 | minifyEnabled false
17 | proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
18 | }
19 | }
20 | }
21 |
22 | dependencies {
23 | compile fileTree(include: ['*.jar'], dir: 'libs')
24 | compile 'com.android.support:appcompat-v7:25.1.0'
25 | annotationProcessor project(path: ':compiler')
26 | compile project(path: ':compiler')
27 | }
28 |
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/app/proguard-rules.pro:
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1 | # Add project specific ProGuard rules here.
2 | # By default, the flags in this file are appended to flags specified
3 | # in /Users/zyao89/Library/Android/sdk/tools/proguard/proguard-android.txt
4 | # You can edit the include path and order by changing the proguardFiles
5 | # directive in build.gradle.
6 | #
7 | # For more details, see
8 | # http://developer.android.com/guide/developing/tools/proguard.html
9 |
10 | # Add any project specific keep options here:
11 |
12 | # If your project uses WebView with JS, uncomment the following
13 | # and specify the fully qualified class name to the JavaScript interface
14 | # class:
15 | #-keepclassmembers class fqcn.of.javascript.interface.for.webview {
16 | # public *;
17 | #}
18 |
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/app/src/main/AndroidManifest.xml:
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/app/src/main/java/com/zyao89/demoabstractprocessor/MainActivity.java:
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1 | package com.zyao89.demoabstractprocessor;
2 |
3 | import android.support.v7.app.AppCompatActivity;
4 | import android.os.Bundle;
5 | import android.view.View;
6 | import android.widget.TextView;
7 |
8 | import com.zyao89.ZyaoAnnotation;
9 | import com.zyao89.demoprocessor.auto.Zyao$$ZYAO;
10 |
11 | @ZyaoAnnotation(
12 | name = "Zyao",
13 | text = "Hello !!! Welcome "
14 | )
15 | public class MainActivity extends AppCompatActivity
16 | {
17 |
18 | @Override
19 | protected void onCreate(Bundle savedInstanceState)
20 | {
21 | super.onCreate(savedInstanceState);
22 | setContentView(R.layout.activity_main);
23 |
24 | }
25 |
26 | public void changeText(View view) {
27 | Zyao$$ZYAO zyao$$ZYAO = new Zyao$$ZYAO();
28 | String message = zyao$$ZYAO.getMessage();
29 | ((TextView)view).setText(message);
30 | }
31 | }
32 |
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/app/src/main/res/layout/activity_main.xml:
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1 |
2 |
13 |
14 |
19 |
20 |
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/app/src/main/res/mipmap-hdpi/ic_launcher.png:
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https://raw.githubusercontent.com/zyao89/DemoAbstractProcessor/870ae385345d8769bf95c7c6799a613587f360db/app/src/main/res/mipmap-hdpi/ic_launcher.png
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/app/src/main/res/mipmap-mdpi/ic_launcher.png:
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https://raw.githubusercontent.com/zyao89/DemoAbstractProcessor/870ae385345d8769bf95c7c6799a613587f360db/app/src/main/res/mipmap-mdpi/ic_launcher.png
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/app/src/main/res/mipmap-xhdpi/ic_launcher.png:
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https://raw.githubusercontent.com/zyao89/DemoAbstractProcessor/870ae385345d8769bf95c7c6799a613587f360db/app/src/main/res/mipmap-xhdpi/ic_launcher.png
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/app/src/main/res/mipmap-xxhdpi/ic_launcher.png:
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https://raw.githubusercontent.com/zyao89/DemoAbstractProcessor/870ae385345d8769bf95c7c6799a613587f360db/app/src/main/res/mipmap-xxhdpi/ic_launcher.png
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/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png:
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https://raw.githubusercontent.com/zyao89/DemoAbstractProcessor/870ae385345d8769bf95c7c6799a613587f360db/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png
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/app/src/main/res/values-w820dp/dimens.xml:
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1 |
2 |
5 | 64dp
6 |
7 |
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/app/src/main/res/values/colors.xml:
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1 |
2 |
3 | #3F51B5
4 | #303F9F
5 | #FF4081
6 |
7 |
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/app/src/main/res/values/dimens.xml:
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1 |
2 |
3 | 16dp
4 | 16dp
5 |
6 |
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/app/src/main/res/values/strings.xml:
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1 |
2 | DemoAbstractProcessor
3 |
4 |
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/app/src/main/res/values/styles.xml:
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1 |
2 |
3 |
4 |
10 |
11 |
12 |
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/build.gradle:
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1 | // Top-level build file where you can add configuration options common to all sub-projects/modules.
2 |
3 | buildscript {
4 | repositories {
5 | jcenter()
6 | }
7 | dependencies {
8 | classpath 'com.android.tools.build:gradle:2.2.3'
9 |
10 | // NOTE: Do not place your application dependencies here; they belong
11 | // in the individual module build.gradle files
12 | }
13 | }
14 |
15 | allprojects {
16 | repositories {
17 | jcenter()
18 | }
19 | }
20 |
21 | task clean(type: Delete) {
22 | delete rootProject.buildDir
23 | }
24 |
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/capture/gif01.gif:
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https://raw.githubusercontent.com/zyao89/DemoAbstractProcessor/870ae385345d8769bf95c7c6799a613587f360db/capture/gif01.gif
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/compiler/.gitignore:
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1 | /build
2 |
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/compiler/build.gradle:
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1 | apply plugin: 'java'
2 |
3 | dependencies {
4 | compile fileTree(dir: 'libs', include: ['*.jar'])
5 | compile 'com.google.auto.service:auto-service:1.0-rc2'
6 | }
7 |
8 | sourceCompatibility = "1.7"
9 | targetCompatibility = "1.7"
10 |
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/compiler/src/main/java/com/zyao89/MyProcessor.java:
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1 | package com.zyao89;
2 |
3 | import com.google.auto.service.AutoService;
4 |
5 | import java.io.IOException;
6 | import java.io.Writer;
7 | import java.util.LinkedHashSet;
8 | import java.util.Set;
9 |
10 | import javax.annotation.processing.AbstractProcessor;
11 | import javax.annotation.processing.Filer;
12 | import javax.annotation.processing.Messager;
13 | import javax.annotation.processing.ProcessingEnvironment;
14 | import javax.annotation.processing.Processor;
15 | import javax.annotation.processing.RoundEnvironment;
16 | import javax.lang.model.SourceVersion;
17 | import javax.lang.model.element.Element;
18 | import javax.lang.model.element.ElementKind;
19 | import javax.lang.model.element.TypeElement;
20 | import javax.lang.model.util.Elements;
21 | import javax.lang.model.util.Types;
22 | import javax.tools.Diagnostic;
23 | import javax.tools.JavaFileObject;
24 |
25 | @AutoService(Processor.class)
26 | public class MyProcessor extends AbstractProcessor
27 | {
28 | private Types mTypeUtils;
29 | private Elements mElementUtils;
30 | private Filer mFiler;
31 | private Messager mMessager;
32 |
33 | @Override
34 | public synchronized void init(ProcessingEnvironment processingEnvironment)
35 | {
36 | super.init(processingEnvironment);
37 |
38 | //初始化我们需要的基础工具
39 | mTypeUtils = processingEnv.getTypeUtils();
40 | mElementUtils = processingEnv.getElementUtils();
41 | mFiler = processingEnv.getFiler();
42 | mMessager = processingEnv.getMessager();
43 | }
44 |
45 | @Override
46 | public SourceVersion getSupportedSourceVersion()
47 | {
48 | //支持的java版本
49 | return SourceVersion.RELEASE_7;
50 | }
51 |
52 | @Override
53 | public Set getSupportedAnnotationTypes()
54 | {
55 | //支持的注解
56 | Set annotations = new LinkedHashSet<>();
57 | annotations.add(ZyaoAnnotation.class.getCanonicalName());
58 | return annotations;
59 | }
60 |
61 | @Override
62 | public boolean process(Set extends TypeElement> set, RoundEnvironment roundEnvironment)
63 | {//这里开始处理我们的注解解析了,以及生成Java文件
64 | if (set == null || set.isEmpty())
65 | {
66 | info(">>> set is null... <<<");
67 | return true;
68 | }
69 |
70 | info(">>> Found field, start... <<<");
71 |
72 | Set extends Element> elements = roundEnvironment.getElementsAnnotatedWith(ZyaoAnnotation.class);
73 |
74 | if (elements == null || elements.isEmpty())
75 | {
76 | info(">>> elements is null... <<<");
77 | return true;
78 | }
79 |
80 | // 遍历所有被注解了@Factory的元素
81 | for (Element annotatedElement : elements) {
82 |
83 | // 检查被注解为@Factory的元素是否是一个类
84 | if (annotatedElement.getKind() != ElementKind.CLASS) {
85 | error(annotatedElement, "Only classes can be annotated with @%s",
86 | ZyaoAnnotation.class.getSimpleName());
87 | return true; // 退出处理
88 | }
89 |
90 | analysisAnnotated(annotatedElement);
91 | }
92 |
93 | return true;
94 | }
95 |
96 | private static final String SUFFIX = "$$ZYAO";
97 |
98 | private void analysisAnnotated(Element classElement)
99 | {
100 | ZyaoAnnotation annotation = classElement.getAnnotation(ZyaoAnnotation.class);
101 | String name = annotation.name();
102 | String text = annotation.text();
103 |
104 | // TypeElement superClassName = mElementUtils.getTypeElement(name);
105 | String newClassName = name + SUFFIX;
106 |
107 | StringBuilder builder = new StringBuilder()
108 | .append("package com.zyao89.demoprocessor.auto;\n\n")
109 | .append("public class ")
110 | .append(newClassName)
111 | .append(" {\n\n") // open class
112 | .append("\tpublic String getMessage() {\n") // open method
113 | .append("\t\treturn \"");
114 |
115 | // this is appending to the return statement
116 | builder.append(text).append(name).append(" !\\n");
117 |
118 |
119 | builder.append("\";\n") // end return
120 | .append("\t}\n") // close method
121 | .append("}\n"); // close class
122 |
123 |
124 | try { // write the file
125 | JavaFileObject source = mFiler.createSourceFile("com.zyao89.demoprocessor.auto."+newClassName);
126 | Writer writer = source.openWriter();
127 | writer.write(builder.toString());
128 | writer.flush();
129 | writer.close();
130 | } catch (IOException e) {
131 | // Note: calling e.printStackTrace() will print IO errors
132 | // that occur from the file already existing after its first run, this is normal
133 | }
134 |
135 | info(">>> analysisAnnotated is finish... <<<");
136 | }
137 |
138 | private void error(Element e, String msg, Object... args) {
139 | mMessager.printMessage(
140 | Diagnostic.Kind.ERROR,
141 | String.format(msg, args),
142 | e);
143 | }
144 |
145 | private void info(String msg, Object... args) {
146 | mMessager.printMessage(
147 | Diagnostic.Kind.NOTE,
148 | String.format(msg, args));
149 | }
150 | }
151 |
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/compiler/src/main/java/com/zyao89/ZyaoAnnotation.java:
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1 | package com.zyao89;
2 |
3 | import java.lang.annotation.ElementType;
4 | import java.lang.annotation.Retention;
5 | import java.lang.annotation.RetentionPolicy;
6 | import java.lang.annotation.Target;
7 |
8 | /**
9 | * Created by zyao89 on 2017/2/26.
10 | * Contact me at 305161066@qq.com or zyao89@gmail.com
11 | * For more projects: https://github.com/zyao89
12 | */
13 | @Target({ElementType.TYPE})
14 | @Retention(RetentionPolicy.CLASS)
15 | public @interface ZyaoAnnotation
16 | {
17 | String name() default "undefined";
18 |
19 | String text() default "";
20 | }
21 |
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/gradle.properties:
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1 | # Project-wide Gradle settings.
2 |
3 | # IDE (e.g. Android Studio) users:
4 | # Gradle settings configured through the IDE *will override*
5 | # any settings specified in this file.
6 |
7 | # For more details on how to configure your build environment visit
8 | # http://www.gradle.org/docs/current/userguide/build_environment.html
9 |
10 | # Specifies the JVM arguments used for the daemon process.
11 | # The setting is particularly useful for tweaking memory settings.
12 | org.gradle.jvmargs=-Xmx1536m
13 |
14 | # When configured, Gradle will run in incubating parallel mode.
15 | # This option should only be used with decoupled projects. More details, visit
16 | # http://www.gradle.org/docs/current/userguide/multi_project_builds.html#sec:decoupled_projects
17 | # org.gradle.parallel=true
18 |
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/gradle/wrapper/gradle-wrapper.jar:
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https://raw.githubusercontent.com/zyao89/DemoAbstractProcessor/870ae385345d8769bf95c7c6799a613587f360db/gradle/wrapper/gradle-wrapper.jar
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/gradle/wrapper/gradle-wrapper.properties:
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1 | #Mon Dec 28 10:00:20 PST 2015
2 | distributionBase=GRADLE_USER_HOME
3 | distributionPath=wrapper/dists
4 | zipStoreBase=GRADLE_USER_HOME
5 | zipStorePath=wrapper/dists
6 | distributionUrl=https\://services.gradle.org/distributions/gradle-2.14.1-all.zip
7 |
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/gradlew:
--------------------------------------------------------------------------------
1 | #!/usr/bin/env bash
2 |
3 | ##############################################################################
4 | ##
5 | ## Gradle start up script for UN*X
6 | ##
7 | ##############################################################################
8 |
9 | # Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
10 | DEFAULT_JVM_OPTS=""
11 |
12 | APP_NAME="Gradle"
13 | APP_BASE_NAME=`basename "$0"`
14 |
15 | # Use the maximum available, or set MAX_FD != -1 to use that value.
16 | MAX_FD="maximum"
17 |
18 | warn ( ) {
19 | echo "$*"
20 | }
21 |
22 | die ( ) {
23 | echo
24 | echo "$*"
25 | echo
26 | exit 1
27 | }
28 |
29 | # OS specific support (must be 'true' or 'false').
30 | cygwin=false
31 | msys=false
32 | darwin=false
33 | case "`uname`" in
34 | CYGWIN* )
35 | cygwin=true
36 | ;;
37 | Darwin* )
38 | darwin=true
39 | ;;
40 | MINGW* )
41 | msys=true
42 | ;;
43 | esac
44 |
45 | # Attempt to set APP_HOME
46 | # Resolve links: $0 may be a link
47 | PRG="$0"
48 | # Need this for relative symlinks.
49 | while [ -h "$PRG" ] ; do
50 | ls=`ls -ld "$PRG"`
51 | link=`expr "$ls" : '.*-> \(.*\)$'`
52 | if expr "$link" : '/.*' > /dev/null; then
53 | PRG="$link"
54 | else
55 | PRG=`dirname "$PRG"`"/$link"
56 | fi
57 | done
58 | SAVED="`pwd`"
59 | cd "`dirname \"$PRG\"`/" >/dev/null
60 | APP_HOME="`pwd -P`"
61 | cd "$SAVED" >/dev/null
62 |
63 | CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
64 |
65 | # Determine the Java command to use to start the JVM.
66 | if [ -n "$JAVA_HOME" ] ; then
67 | if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
68 | # IBM's JDK on AIX uses strange locations for the executables
69 | JAVACMD="$JAVA_HOME/jre/sh/java"
70 | else
71 | JAVACMD="$JAVA_HOME/bin/java"
72 | fi
73 | if [ ! -x "$JAVACMD" ] ; then
74 | die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
75 |
76 | Please set the JAVA_HOME variable in your environment to match the
77 | location of your Java installation."
78 | fi
79 | else
80 | JAVACMD="java"
81 | which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
82 |
83 | Please set the JAVA_HOME variable in your environment to match the
84 | location of your Java installation."
85 | fi
86 |
87 | # Increase the maximum file descriptors if we can.
88 | if [ "$cygwin" = "false" -a "$darwin" = "false" ] ; then
89 | MAX_FD_LIMIT=`ulimit -H -n`
90 | if [ $? -eq 0 ] ; then
91 | if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
92 | MAX_FD="$MAX_FD_LIMIT"
93 | fi
94 | ulimit -n $MAX_FD
95 | if [ $? -ne 0 ] ; then
96 | warn "Could not set maximum file descriptor limit: $MAX_FD"
97 | fi
98 | else
99 | warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
100 | fi
101 | fi
102 |
103 | # For Darwin, add options to specify how the application appears in the dock
104 | if $darwin; then
105 | GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
106 | fi
107 |
108 | # For Cygwin, switch paths to Windows format before running java
109 | if $cygwin ; then
110 | APP_HOME=`cygpath --path --mixed "$APP_HOME"`
111 | CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
112 | JAVACMD=`cygpath --unix "$JAVACMD"`
113 |
114 | # We build the pattern for arguments to be converted via cygpath
115 | ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
116 | SEP=""
117 | for dir in $ROOTDIRSRAW ; do
118 | ROOTDIRS="$ROOTDIRS$SEP$dir"
119 | SEP="|"
120 | done
121 | OURCYGPATTERN="(^($ROOTDIRS))"
122 | # Add a user-defined pattern to the cygpath arguments
123 | if [ "$GRADLE_CYGPATTERN" != "" ] ; then
124 | OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
125 | fi
126 | # Now convert the arguments - kludge to limit ourselves to /bin/sh
127 | i=0
128 | for arg in "$@" ; do
129 | CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -`
130 | CHECK2=`echo "$arg"|egrep -c "^-"` ### Determine if an option
131 |
132 | if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then ### Added a condition
133 | eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"`
134 | else
135 | eval `echo args$i`="\"$arg\""
136 | fi
137 | i=$((i+1))
138 | done
139 | case $i in
140 | (0) set -- ;;
141 | (1) set -- "$args0" ;;
142 | (2) set -- "$args0" "$args1" ;;
143 | (3) set -- "$args0" "$args1" "$args2" ;;
144 | (4) set -- "$args0" "$args1" "$args2" "$args3" ;;
145 | (5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
146 | (6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
147 | (7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
148 | (8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
149 | (9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
150 | esac
151 | fi
152 |
153 | # Split up the JVM_OPTS And GRADLE_OPTS values into an array, following the shell quoting and substitution rules
154 | function splitJvmOpts() {
155 | JVM_OPTS=("$@")
156 | }
157 | eval splitJvmOpts $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS
158 | JVM_OPTS[${#JVM_OPTS[*]}]="-Dorg.gradle.appname=$APP_BASE_NAME"
159 |
160 | exec "$JAVACMD" "${JVM_OPTS[@]}" -classpath "$CLASSPATH" org.gradle.wrapper.GradleWrapperMain "$@"
161 |
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/gradlew.bat:
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1 | @if "%DEBUG%" == "" @echo off
2 | @rem ##########################################################################
3 | @rem
4 | @rem Gradle startup script for Windows
5 | @rem
6 | @rem ##########################################################################
7 |
8 | @rem Set local scope for the variables with windows NT shell
9 | if "%OS%"=="Windows_NT" setlocal
10 |
11 | @rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
12 | set DEFAULT_JVM_OPTS=
13 |
14 | set DIRNAME=%~dp0
15 | if "%DIRNAME%" == "" set DIRNAME=.
16 | set APP_BASE_NAME=%~n0
17 | set APP_HOME=%DIRNAME%
18 |
19 | @rem Find java.exe
20 | if defined JAVA_HOME goto findJavaFromJavaHome
21 |
22 | set JAVA_EXE=java.exe
23 | %JAVA_EXE% -version >NUL 2>&1
24 | if "%ERRORLEVEL%" == "0" goto init
25 |
26 | echo.
27 | echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
28 | echo.
29 | echo Please set the JAVA_HOME variable in your environment to match the
30 | echo location of your Java installation.
31 |
32 | goto fail
33 |
34 | :findJavaFromJavaHome
35 | set JAVA_HOME=%JAVA_HOME:"=%
36 | set JAVA_EXE=%JAVA_HOME%/bin/java.exe
37 |
38 | if exist "%JAVA_EXE%" goto init
39 |
40 | echo.
41 | echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
42 | echo.
43 | echo Please set the JAVA_HOME variable in your environment to match the
44 | echo location of your Java installation.
45 |
46 | goto fail
47 |
48 | :init
49 | @rem Get command-line arguments, handling Windowz variants
50 |
51 | if not "%OS%" == "Windows_NT" goto win9xME_args
52 | if "%@eval[2+2]" == "4" goto 4NT_args
53 |
54 | :win9xME_args
55 | @rem Slurp the command line arguments.
56 | set CMD_LINE_ARGS=
57 | set _SKIP=2
58 |
59 | :win9xME_args_slurp
60 | if "x%~1" == "x" goto execute
61 |
62 | set CMD_LINE_ARGS=%*
63 | goto execute
64 |
65 | :4NT_args
66 | @rem Get arguments from the 4NT Shell from JP Software
67 | set CMD_LINE_ARGS=%$
68 |
69 | :execute
70 | @rem Setup the command line
71 |
72 | set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
73 |
74 | @rem Execute Gradle
75 | "%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS%
76 |
77 | :end
78 | @rem End local scope for the variables with windows NT shell
79 | if "%ERRORLEVEL%"=="0" goto mainEnd
80 |
81 | :fail
82 | rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
83 | rem the _cmd.exe /c_ return code!
84 | if not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
85 | exit /b 1
86 |
87 | :mainEnd
88 | if "%OS%"=="Windows_NT" endlocal
89 |
90 | :omega
91 |
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/settings.gradle:
--------------------------------------------------------------------------------
1 | include ':app', ':compiler'
2 |
--------------------------------------------------------------------------------