First commit

.gitignore

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+**/build
+.idea
+.gradle

README.md

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+Sample project demonstrating how to create a basic Kotlin compiler plugin.
+
+Run this command to see it in action:
+
+```text
+$ ./gradlew :app:build
+```
+```text
+:compiler-plugin:kaptKotlin
+:compiler-plugin:compileKotlin
+Using kotlin incremental compilation
+:compiler-plugin:compileJava UP-TO-DATE
+:compiler-plugin:copyMainKotlinClasses
+:compiler-plugin:processResources UP-TO-DATE
+:compiler-plugin:classes UP-TO-DATE
+:compiler-plugin:jar
+:app:compileKotlin
+Using kotlin incremental compilation
+w: *** IT'S ALIVE ***
+:app:compileJava UP-TO-DATE
+:app:copyMainKotlinClasses
+:app:processResources UP-TO-DATE
+:app:classes UP-TO-DATE
+:app:jar
+:app:assemble
+:app:compileTestKotlin UP-TO-DATE
+:app:compileTestJava UP-TO-DATE
+:app:copyTestKotlinClasses
+:app:processTestResources UP-TO-DATE
+:app:testClasses UP-TO-DATE
+:app:test UP-TO-DATE
+:app:check UP-TO-DATE
+:app:build
+
+BUILD SUCCESSFUL
+```

app/build.gradle

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+def compilerPlugin = project(':compiler-plugin')
+
+evaluationDependsOn(":$compilerPlugin.name")
+
+apply plugin: 'kotlin'
+
+compileKotlin.kotlinOptions.freeCompilerArgs = ['-Xplugin', new File(compilerPlugin.buildDir, "libs/${compilerPlugin.name}.jar")]
+
+dependencies {
+    compile "org.jetbrains.kotlin:kotlin-stdlib:$kotlin_version"
+}
+
+afterEvaluate {
+    tasks["compileKotlin"].dependsOn += compilerPlugin.tasks["jar"]
+}

app/src/main/java/me/eugeniomarletti/TestClass.kt

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+package me.eugeniomarletti
+
+class TestClass

build.gradle

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+buildscript {
+    ext.kotlin_version = '1.1.2'
+
+    repositories {
+        jcenter()
+    }
+    dependencies {
+        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
+    }
+}
+
+allprojects {
+    repositories {
+        jcenter()
+    }
+}

compiler-plugin/build.gradle

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+apply plugin: 'kotlin'
+apply plugin: 'kotlin-kapt'
+
+compileKotlin.kotlinOptions.freeCompilerArgs = ['-Xskip-runtime-version-check', 'true']
+
+dependencies {
+    compile "org.jetbrains.kotlin:kotlin-stdlib:$kotlin_version"
+    compile "org.jetbrains.kotlin:kotlin-compiler-embeddable:$kotlin_version"
+
+    compile "com.google.auto.service:auto-service:+"
+    kapt "com.google.auto.service:auto-service:+"
+}

compiler-plugin/src/main/java/me/eugeniomarletti/TestExtension.kt

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+package me.eugeniomarletti
+
+import org.jetbrains.kotlin.cli.common.messages.CompilerMessageLocation
+import org.jetbrains.kotlin.cli.common.messages.CompilerMessageSeverity.WARNING
+import org.jetbrains.kotlin.cli.common.messages.MessageCollector
+import org.jetbrains.kotlin.codegen.ClassBuilderFactory
+import org.jetbrains.kotlin.codegen.extensions.ClassBuilderInterceptorExtension
+import org.jetbrains.kotlin.diagnostics.DiagnosticSink
+import org.jetbrains.kotlin.resolve.BindingContext
+
+class TestExtension(val messageCollector: MessageCollector) : ClassBuilderInterceptorExtension {
+
+    override fun interceptClassBuilderFactory(
+        interceptedFactory: ClassBuilderFactory,
+        bindingContext: BindingContext,
+        diagnostics: DiagnosticSink
+    ): ClassBuilderFactory {
+
+        messageCollector.report(
+            WARNING,
+            "*** IT'S ALIVE ***",
+            CompilerMessageLocation.NO_LOCATION)
+
+        return interceptedFactory
+    }
+}

compiler-plugin/src/main/java/me/eugeniomarletti/TestPlugin.kt

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+package me.eugeniomarletti
+
+import com.google.auto.service.AutoService
+import org.jetbrains.kotlin.cli.common.CLIConfigurationKeys
+import org.jetbrains.kotlin.cli.common.messages.MessageCollector
+import org.jetbrains.kotlin.codegen.extensions.ClassBuilderInterceptorExtension
+import org.jetbrains.kotlin.com.intellij.mock.MockProject
+import org.jetbrains.kotlin.compiler.plugin.ComponentRegistrar
+import org.jetbrains.kotlin.config.CompilerConfiguration
+
+@AutoService(ComponentRegistrar::class)
+class TestComponentRegistrar : ComponentRegistrar {
+
+    override fun registerProjectComponents(project: MockProject, configuration: CompilerConfiguration) {
+
+        // see https://github.com/JetBrains/kotlin/blob/1.1.2/plugins/annotation-collector/src/org/jetbrains/kotlin/annotation/AnnotationCollectorPlugin.kt#L92
+        val messageCollector = configuration.get(CLIConfigurationKeys.MESSAGE_COLLECTOR_KEY, MessageCollector.NONE)
+
+        ClassBuilderInterceptorExtension.registerExtension(project, TestExtension(messageCollector))
+    }
+}

gradle/wrapper/gradle-wrapper.properties

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+#Sun Apr 30 15:46:37 CEST 2017
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-3.1-bin.zip

gradlew

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+#!/usr/bin/env bash
+
+##############################################################################
+##
+##  Gradle start up script for UN*X
+##
+##############################################################################
+
+# Attempt to set APP_HOME
+# Resolve links: $0 may be a link
+PRG="$0"
+# Need this for relative symlinks.
+while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+        PRG="$link"
+    else
+        PRG=`dirname "$PRG"`"/$link"
+    fi
+done
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >/dev/null
+APP_HOME="`pwd -P`"
+cd "$SAVED" >/dev/null
+
+APP_NAME="Gradle"
+APP_BASE_NAME=`basename "$0"`
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS=""
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD="maximum"
+
+warn ( ) {
+    echo "$*"
+}
+
+die ( ) {
+    echo
+    echo "$*"
+    echo
+    exit 1
+}
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "`uname`" in
+  CYGWIN* )
+    cygwin=true
+    ;;
+  Darwin* )
+    darwin=true
+    ;;
+  MINGW* )
+    msys=true
+    ;;
+  NONSTOP* )
+    nonstop=true
+    ;;
+esac
+
+CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+        # IBM's JDK on AIX uses strange locations for the executables
+        JAVACMD="$JAVA_HOME/jre/sh/java"
+    else
+        JAVACMD="$JAVA_HOME/bin/java"
+    fi
+    if [ ! -x "$JAVACMD" ] ; then
+        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD="java"
+    which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+fi
+
+# Increase the maximum file descriptors if we can.
+if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
+    MAX_FD_LIMIT=`ulimit -H -n`
+    if [ $? -eq 0 ] ; then
+        if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
+            MAX_FD="$MAX_FD_LIMIT"
+        fi
+        ulimit -n $MAX_FD
+        if [ $? -ne 0 ] ; then
+            warn "Could not set maximum file descriptor limit: $MAX_FD"
+        fi
+    else
+        warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
+    fi
+fi
+
+# For Darwin, add options to specify how the application appears in the dock
+if $darwin; then
+    GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
+fi
+
+# For Cygwin, switch paths to Windows format before running java
+if $cygwin ; then
+    APP_HOME=`cygpath --path --mixed "$APP_HOME"`
+    CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+    JAVACMD=`cygpath --unix "$JAVACMD"`
+
+    # We build the pattern for arguments to be converted via cygpath
+    ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
+    SEP=""
+    for dir in $ROOTDIRSRAW ; do
+        ROOTDIRS="$ROOTDIRS$SEP$dir"
+        SEP="|"
+    done
+    OURCYGPATTERN="(^($ROOTDIRS))"
+    # Add a user-defined pattern to the cygpath arguments
+    if [ "$GRADLE_CYGPATTERN" != "" ] ; then
+        OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
+    fi
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    i=0
+    for arg in "$@" ; do
+        CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -`
+        CHECK2=`echo "$arg"|egrep -c "^-"`                                 ### Determine if an option
+
+        if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then                    ### Added a condition
+            eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"`
+        else
+            eval `echo args$i`="\"$arg\""
+        fi
+        i=$((i+1))
+    done
+    case $i in
+        (0) set -- ;;
+        (1) set -- "$args0" ;;
+        (2) set -- "$args0" "$args1" ;;
+        (3) set -- "$args0" "$args1" "$args2" ;;
+        (4) set -- "$args0" "$args1" "$args2" "$args3" ;;
+        (5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
+        (6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
+        (7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
+        (8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
+        (9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
+    esac
+fi
+
+# Split up the JVM_OPTS And GRADLE_OPTS values into an array, following the shell quoting and substitution rules
+function splitJvmOpts() {
+    JVM_OPTS=("$@")
+}
+eval splitJvmOpts $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS
+JVM_OPTS[${#JVM_OPTS[*]}]="-Dorg.gradle.appname=$APP_BASE_NAME"
+
+# by default we should be in the correct project dir, but when run from Finder on Mac, the cwd is wrong
+if [[ "$(uname)" == "Darwin" ]] && [[ "$HOME" == "$PWD" ]]; then
+  cd "$(dirname "$0")"
+fi
+
+exec "$JAVACMD" "${JVM_OPTS[@]}" -classpath "$CLASSPATH" org.gradle.wrapper.GradleWrapperMain "$@"