├── .gitignore ├── LICENSE.md ├── README.md ├── app ├── .gitignore ├── build.gradle ├── proguard-rules.pro └── src │ └── main │ ├── AndroidManifest.xml │ ├── java │ └── me │ │ └── eugeniomarletti │ │ └── sample │ │ ├── MainActivity.kt │ │ └── Sample.kt │ └── res │ ├── 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 ├── build.gradle ├── gradle.properties ├── gradle └── wrapper │ ├── gradle-wrapper.jar │ └── gradle-wrapper.properties ├── gradlew ├── gradlew.bat ├── module ├── .gitignore ├── build.gradle ├── proguard-rules.pro └── src │ └── main │ ├── AndroidManifest.xml │ └── java │ └── me │ └── eugeniomarletti │ └── sample │ ├── SampleAnnotation.kt │ └── SampleClass.kt ├── processor ├── .gitignore ├── build.gradle └── src │ └── main │ └── java │ └── me │ └── eugeniomarletti │ └── sample │ └── SampleProcessor.kt └── settings.gradle /.gitignore: -------------------------------------------------------------------------------- 1 | *.iml 2 | .gradle 3 | /local.properties 4 | /.idea/workspace.xml 5 | /.idea/libraries 6 | .DS_Store 7 | /build 8 | /captures 9 | .externalNativeBuild 10 | -------------------------------------------------------------------------------- /LICENSE.md: -------------------------------------------------------------------------------- 1 | MIT License 2 | 3 | Copyright (c) 2017 Eugenio Marletti 4 | 5 | Permission is hereby granted, free of charge, to any person obtaining a copy 6 | of this software and associated documentation files (the "Software"), to deal 7 | in the Software without restriction, including without limitation the rights 8 | to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 9 | copies of the Software, and to permit persons to whom the Software is 10 | furnished to do so, subject to the following conditions: 11 | 12 | The above copyright notice and this permission notice shall be included in all 13 | copies or substantial portions of the Software. 14 | 15 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 16 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 17 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 18 | AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 19 | LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 20 | OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 21 | SOFTWARE. 22 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | ### Sample created for the article ["Pushing the limits of Kotlin annotation processing"](https://medium.com/@workingkills/pushing-the-limits-of-kotlin-annotation-processing-8611027b6711). 2 | --- 3 | 4 | This sample Android project demonstrates: 5 | 6 | 1. Generating Kotlin code though an [annotation processor](/processor/src/main/java/me/eugeniomarletti/sample/SampleProcessor.kt). 7 | 2. Feeding that generated code into a second round of annotation processing by putting it into a [Gradle module](/module/build.gradle#L29) and consuming it into [another one](/app/build.gradle#L26). 8 | 3. Testing that a second round of processing [has happened](/app/src/main/java/me/eugeniomarletti/sample/Sample.kt#L10). In this case [Dagger 2](/app/build.gradle#L29) (used as an example) is consuming the previously generated code to generate additional classes. 9 | -------------------------------------------------------------------------------- /app/.gitignore: -------------------------------------------------------------------------------- 1 | /build 2 | -------------------------------------------------------------------------------- /app/build.gradle: -------------------------------------------------------------------------------- 1 | apply plugin: 'com.android.application' 2 | apply plugin: 'kotlin-android' 3 | 4 | kapt { 5 | generateStubs = true 6 | } 7 | 8 | android { 9 | compileSdkVersion 25 10 | buildToolsVersion "25.0.0" 11 | 12 | defaultConfig { 13 | applicationId "me.eugeniomarletti.sample" 14 | minSdkVersion 15 15 | targetSdkVersion 24 16 | versionCode 1 17 | versionName "1.0" 18 | } 19 | } 20 | 21 | repositories { 22 | jcenter() 23 | } 24 | 25 | dependencies { 26 | compile project(':module') 27 | compile "org.jetbrains.kotlin:kotlin-stdlib:$kotlin_version" 28 | compile "com.google.dagger:dagger:$dagger_version" 29 | kapt "com.google.dagger:dagger-compiler:$dagger_version" 30 | } 31 | -------------------------------------------------------------------------------- /app/proguard-rules.pro: -------------------------------------------------------------------------------- 1 | # Add project specific ProGuard rules here. 2 | # By default, the flags in this file are appended to flags specified 3 | # in /Users/takhion/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 | -------------------------------------------------------------------------------- /app/src/main/AndroidManifest.xml: -------------------------------------------------------------------------------- 1 | 2 | 5 | 6 | 9 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | -------------------------------------------------------------------------------- /app/src/main/java/me/eugeniomarletti/sample/MainActivity.kt: -------------------------------------------------------------------------------- 1 | package me.eugeniomarletti.sample 2 | 3 | import android.app.Activity 4 | import android.os.Bundle 5 | import android.widget.Toast 6 | 7 | class MainActivity : Activity() { 8 | 9 | override fun onCreate(savedInstanceState: Bundle?) { 10 | super.onCreate(savedInstanceState) 11 | testGeneratedCode { message -> Toast.makeText(this, message, Toast.LENGTH_LONG).show() } 12 | } 13 | } 14 | -------------------------------------------------------------------------------- /app/src/main/java/me/eugeniomarletti/sample/Sample.kt: -------------------------------------------------------------------------------- 1 | package me.eugeniomarletti.sample 2 | 3 | import dagger.Component 4 | 5 | @Component interface MainComponent { 6 | val generated: GeneratedSampleClass 7 | } 8 | 9 | fun testGeneratedCode(log: (message: String) -> Unit) { 10 | DaggerMainComponent.create().generated.test(log) 11 | } 12 | -------------------------------------------------------------------------------- /app/src/main/res/mipmap-hdpi/ic_launcher.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/Takhion/generate-kotlin-multiple-rounds/16bf85699f067effc97f5f183356eba29fa2cda9/app/src/main/res/mipmap-hdpi/ic_launcher.png -------------------------------------------------------------------------------- /app/src/main/res/mipmap-mdpi/ic_launcher.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/Takhion/generate-kotlin-multiple-rounds/16bf85699f067effc97f5f183356eba29fa2cda9/app/src/main/res/mipmap-mdpi/ic_launcher.png -------------------------------------------------------------------------------- /app/src/main/res/mipmap-xhdpi/ic_launcher.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/Takhion/generate-kotlin-multiple-rounds/16bf85699f067effc97f5f183356eba29fa2cda9/app/src/main/res/mipmap-xhdpi/ic_launcher.png -------------------------------------------------------------------------------- /app/src/main/res/mipmap-xxhdpi/ic_launcher.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/Takhion/generate-kotlin-multiple-rounds/16bf85699f067effc97f5f183356eba29fa2cda9/app/src/main/res/mipmap-xxhdpi/ic_launcher.png -------------------------------------------------------------------------------- /app/src/main/res/mipmap-xxxhdpi/ic_launcher.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/Takhion/generate-kotlin-multiple-rounds/16bf85699f067effc97f5f183356eba29fa2cda9/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png -------------------------------------------------------------------------------- /build.gradle: -------------------------------------------------------------------------------- 1 | buildscript { 2 | ext.kotlin_version = '1.0.6' 3 | ext.dagger_version = '2.8' 4 | ext.auto_service_version = '1.0-rc2' 5 | repositories { 6 | jcenter() 7 | } 8 | dependencies { 9 | classpath 'com.android.tools.build:gradle:2.2.2' 10 | classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version" 11 | } 12 | } 13 | -------------------------------------------------------------------------------- /gradle.properties: -------------------------------------------------------------------------------- 1 | # Project-wide Gradle settings. 2 | # IDE (e.g. Android Studio) users: 3 | # Gradle settings configured through the IDE *will override* 4 | # any settings specified in this file. 5 | # For more details on how to configure your build environment visit 6 | # http://www.gradle.org/docs/current/userguide/build_environment.html 7 | # Specifies the JVM arguments used for the daemon process. 8 | # The setting is particularly useful for tweaking memory settings. 9 | org.gradle.jvmargs=-Xmx1536m 10 | # When configured, Gradle will run in incubating parallel mode. 11 | # This option should only be used with decoupled projects. More details, visit 12 | # http://www.gradle.org/docs/current/userguide/multi_project_builds.html#sec:decoupled_projects 13 | # org.gradle.parallel=true 14 | -------------------------------------------------------------------------------- /gradle/wrapper/gradle-wrapper.jar: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/Takhion/generate-kotlin-multiple-rounds/16bf85699f067effc97f5f183356eba29fa2cda9/gradle/wrapper/gradle-wrapper.jar -------------------------------------------------------------------------------- /gradle/wrapper/gradle-wrapper.properties: -------------------------------------------------------------------------------- 1 | #Wed Jan 04 14:38:04 CET 2017 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-3.3-all.zip 7 | -------------------------------------------------------------------------------- /gradlew: -------------------------------------------------------------------------------- 1 | #!/usr/bin/env bash 2 | 3 | ############################################################################## 4 | ## 5 | ## Gradle start up script for UN*X 6 | ## 7 | ############################################################################## 8 | 9 | # Attempt to set APP_HOME 10 | # Resolve links: $0 may be a link 11 | PRG="$0" 12 | # Need this for relative symlinks. 13 | while [ -h "$PRG" ] ; do 14 | ls=`ls -ld "$PRG"` 15 | link=`expr "$ls" : '.*-> \(.*\)$'` 16 | if expr "$link" : '/.*' > /dev/null; then 17 | PRG="$link" 18 | else 19 | PRG=`dirname "$PRG"`"/$link" 20 | fi 21 | done 22 | SAVED="`pwd`" 23 | cd "`dirname \"$PRG\"`/" >/dev/null 24 | APP_HOME="`pwd -P`" 25 | cd "$SAVED" >/dev/null 26 | 27 | APP_NAME="Gradle" 28 | APP_BASE_NAME=`basename "$0"` 29 | 30 | # Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script. 31 | DEFAULT_JVM_OPTS="" 32 | 33 | # Use the maximum available, or set MAX_FD != -1 to use that value. 34 | MAX_FD="maximum" 35 | 36 | warn ( ) { 37 | echo "$*" 38 | } 39 | 40 | die ( ) { 41 | echo 42 | echo "$*" 43 | echo 44 | exit 1 45 | } 46 | 47 | # OS specific support (must be 'true' or 'false'). 48 | cygwin=false 49 | msys=false 50 | darwin=false 51 | nonstop=false 52 | case "`uname`" in 53 | CYGWIN* ) 54 | cygwin=true 55 | ;; 56 | Darwin* ) 57 | darwin=true 58 | ;; 59 | MINGW* ) 60 | msys=true 61 | ;; 62 | NONSTOP* ) 63 | nonstop=true 64 | ;; 65 | esac 66 | 67 | CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar 68 | 69 | # Determine the Java command to use to start the JVM. 70 | if [ -n "$JAVA_HOME" ] ; then 71 | if [ -x "$JAVA_HOME/jre/sh/java" ] ; then 72 | # IBM's JDK on AIX uses strange locations for the executables 73 | JAVACMD="$JAVA_HOME/jre/sh/java" 74 | else 75 | JAVACMD="$JAVA_HOME/bin/java" 76 | fi 77 | if [ ! -x "$JAVACMD" ] ; then 78 | die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME 79 | 80 | Please set the JAVA_HOME variable in your environment to match the 81 | location of your Java installation." 82 | fi 83 | else 84 | JAVACMD="java" 85 | which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. 86 | 87 | Please set the JAVA_HOME variable in your environment to match the 88 | location of your Java installation." 89 | fi 90 | 91 | # Increase the maximum file descriptors if we can. 92 | if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then 93 | MAX_FD_LIMIT=`ulimit -H -n` 94 | if [ $? -eq 0 ] ; then 95 | if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then 96 | MAX_FD="$MAX_FD_LIMIT" 97 | fi 98 | ulimit -n $MAX_FD 99 | if [ $? -ne 0 ] ; then 100 | warn "Could not set maximum file descriptor limit: $MAX_FD" 101 | fi 102 | else 103 | warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT" 104 | fi 105 | fi 106 | 107 | # For Darwin, add options to specify how the application appears in the dock 108 | if $darwin; then 109 | GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\"" 110 | fi 111 | 112 | # For Cygwin, switch paths to Windows format before running java 113 | if $cygwin ; then 114 | APP_HOME=`cygpath --path --mixed "$APP_HOME"` 115 | CLASSPATH=`cygpath --path --mixed "$CLASSPATH"` 116 | JAVACMD=`cygpath --unix "$JAVACMD"` 117 | 118 | # We build the pattern for arguments to be converted via cygpath 119 | ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null` 120 | SEP="" 121 | for dir in $ROOTDIRSRAW ; do 122 | ROOTDIRS="$ROOTDIRS$SEP$dir" 123 | SEP="|" 124 | done 125 | OURCYGPATTERN="(^($ROOTDIRS))" 126 | # Add a user-defined pattern to the cygpath arguments 127 | if [ "$GRADLE_CYGPATTERN" != "" ] ; then 128 | OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)" 129 | fi 130 | # Now convert the arguments - kludge to limit ourselves to /bin/sh 131 | i=0 132 | for arg in "$@" ; do 133 | CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -` 134 | CHECK2=`echo "$arg"|egrep -c "^-"` ### Determine if an option 135 | 136 | if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then ### Added a condition 137 | eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"` 138 | else 139 | eval `echo args$i`="\"$arg\"" 140 | fi 141 | i=$((i+1)) 142 | done 143 | case $i in 144 | (0) set -- ;; 145 | (1) set -- "$args0" ;; 146 | (2) set -- "$args0" "$args1" ;; 147 | (3) set -- "$args0" "$args1" "$args2" ;; 148 | (4) set -- "$args0" "$args1" "$args2" "$args3" ;; 149 | (5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;; 150 | (6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;; 151 | (7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;; 152 | (8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;; 153 | (9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;; 154 | esac 155 | fi 156 | 157 | # Split up the JVM_OPTS And GRADLE_OPTS values into an array, following the shell quoting and substitution rules 158 | function splitJvmOpts() { 159 | JVM_OPTS=("$@") 160 | } 161 | eval splitJvmOpts $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS 162 | JVM_OPTS[${#JVM_OPTS[*]}]="-Dorg.gradle.appname=$APP_BASE_NAME" 163 | 164 | exec "$JAVACMD" "${JVM_OPTS[@]}" -classpath "$CLASSPATH" org.gradle.wrapper.GradleWrapperMain "$@" 165 | -------------------------------------------------------------------------------- /gradlew.bat: -------------------------------------------------------------------------------- 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 | set DIRNAME=%~dp0 12 | if "%DIRNAME%" == "" set DIRNAME=. 13 | set APP_BASE_NAME=%~n0 14 | set APP_HOME=%DIRNAME% 15 | 16 | @rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script. 17 | set DEFAULT_JVM_OPTS= 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 Windows 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 | -------------------------------------------------------------------------------- /module/.gitignore: -------------------------------------------------------------------------------- 1 | /build 2 | -------------------------------------------------------------------------------- /module/build.gradle: -------------------------------------------------------------------------------- 1 | apply plugin: 'com.android.library' 2 | apply plugin: 'kotlin-android' 3 | 4 | def moduleFlavor = 'debug' 5 | 6 | kapt { 7 | generateStubs = true 8 | } 9 | 10 | android { 11 | compileSdkVersion 25 12 | buildToolsVersion "25.0.0" 13 | 14 | defaultConfig { 15 | minSdkVersion 15 16 | targetSdkVersion 25 17 | versionCode 1 18 | versionName "1.0" 19 | } 20 | 21 | defaultPublishConfig moduleFlavor 22 | } 23 | 24 | repositories { 25 | jcenter() 26 | } 27 | 28 | dependencies { 29 | kapt project(':processor') 30 | compile "org.jetbrains.kotlin:kotlin-stdlib:$kotlin_version" 31 | compile "com.google.dagger:dagger:$dagger_version" 32 | } 33 | 34 | afterEvaluate { 35 | android.libraryVariants.all { variant -> 36 | if (variant.buildType.name == moduleFlavor) { 37 | def kotlinGenerated = file("$buildDir/tmp/kapt/${variant.name}/kotlinGenerated") 38 | variant.addJavaSourceFoldersToModel(kotlinGenerated) 39 | return 40 | } 41 | } 42 | } 43 | -------------------------------------------------------------------------------- /module/proguard-rules.pro: -------------------------------------------------------------------------------- 1 | # Add project specific ProGuard rules here. 2 | # By default, the flags in this file are appended to flags specified 3 | # in /Users/takhion/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 | -------------------------------------------------------------------------------- /module/src/main/AndroidManifest.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | -------------------------------------------------------------------------------- /module/src/main/java/me/eugeniomarletti/sample/SampleAnnotation.kt: -------------------------------------------------------------------------------- 1 | package me.eugeniomarletti.sample 2 | 3 | import kotlin.annotation.AnnotationTarget.CLASS 4 | 5 | @Target(CLASS) 6 | annotation class SampleAnnotation 7 | 8 | -------------------------------------------------------------------------------- /module/src/main/java/me/eugeniomarletti/sample/SampleClass.kt: -------------------------------------------------------------------------------- 1 | package me.eugeniomarletti.sample 2 | 3 | @SampleAnnotation class SampleClass 4 | -------------------------------------------------------------------------------- /processor/.gitignore: -------------------------------------------------------------------------------- 1 | /build 2 | -------------------------------------------------------------------------------- /processor/build.gradle: -------------------------------------------------------------------------------- 1 | apply plugin: 'kotlin' 2 | 3 | repositories { 4 | jcenter() 5 | } 6 | 7 | dependencies { 8 | compile "org.jetbrains.kotlin:kotlin-stdlib:$kotlin_version" 9 | compile "com.google.auto.service:auto-service:$auto_service_version" 10 | kapt "com.google.auto.service:auto-service:$auto_service_version" 11 | } 12 | -------------------------------------------------------------------------------- /processor/src/main/java/me/eugeniomarletti/sample/SampleProcessor.kt: -------------------------------------------------------------------------------- 1 | package me.eugeniomarletti.sample 2 | 3 | import com.google.auto.service.AutoService 4 | import java.io.File 5 | import javax.annotation.processing.AbstractProcessor 6 | import javax.annotation.processing.ProcessingEnvironment 7 | import javax.annotation.processing.Processor 8 | import javax.annotation.processing.RoundEnvironment 9 | import javax.lang.model.element.TypeElement 10 | 11 | @AutoService(Processor::class) 12 | class SampleProcessor : AbstractProcessor() { 13 | 14 | private val kaptKotlinGeneratedOption = "kapt.kotlin.generated" 15 | private lateinit var kaptKotlinGenerated: File 16 | 17 | private val sampleAnnotation = "me.eugeniomarletti.sample.SampleAnnotation" 18 | 19 | override fun getSupportedAnnotationTypes() = setOf(sampleAnnotation) 20 | 21 | override fun init(processingEnv: ProcessingEnvironment) { 22 | super.init(processingEnv) 23 | kaptKotlinGenerated = File(processingEnv.options[kaptKotlinGeneratedOption]) 24 | } 25 | 26 | override fun process(annotations: Set, roundEnv: RoundEnvironment): Boolean { 27 | val annotation = annotations.firstOrNull { it.toString() == sampleAnnotation } ?: return false 28 | for (element in roundEnv.getElementsAnnotatedWith(annotation)) { 29 | val className = element.simpleName.toString() 30 | val `package` = processingEnv.elementUtils.getPackageOf(element).toString() 31 | generateClass(className, `package`) 32 | } 33 | return true 34 | } 35 | 36 | private fun generateClass(className: String, `package`: String) { 37 | val source = generateSourceSource(`package`, className) 38 | val relativePath = `package`.replace('.', File.separatorChar) 39 | val folder = File(kaptKotlinGenerated, relativePath).apply { mkdirs() } 40 | File(folder, "Generated$className.kt").writeText(source) 41 | } 42 | 43 | private fun generateSourceSource(`package`: String, className: String) = 44 | """ 45 | package $`package` 46 | 47 | import javax.inject.Inject 48 | 49 | class Generated$className @Inject constructor() { 50 | inline fun test(log: (message: String) -> Unit) { 51 | log("The annotated class was $`package`.$className") 52 | } 53 | } 54 | 55 | """.trimIndent() 56 | } -------------------------------------------------------------------------------- /settings.gradle: -------------------------------------------------------------------------------- 1 | include ':processor' 2 | include ':module' 3 | include ':app' 4 | --------------------------------------------------------------------------------