From 848edc14cb85cde2385cebfe714815b6ca5bdbd3 Mon Sep 17 00:00:00 2001
From: Alexander Udalov <Alexander.Udalov@jetbrains.com>
Date: Tue, 11 Jul 2017 16:02:25 +0300
Subject: [PATCH] Maven plugin: fix warnings, update copyrights

---
 .../kotlin/maven/ExecuteKotlinScriptMojo.java | 35 ++++------
 .../kotlin/maven/IdeaCoreLoggerFactory.java   | 16 +++++
 .../kotlin/maven/K2JSCompilerMojo.java        | 10 +--
 .../kotlin/maven/K2JVMCompileMojo.java        | 27 ++++----
 .../KotlinCompilationFailureException.java    | 25 ++++---
 .../kotlin/maven/KotlinCompileMojoBase.java   | 66 +++++++------------
 .../maven/KotlinMavenPluginExtension.java     | 16 +++++
 .../kotlin/maven/KotlinTestCompileMojo.java   | 11 +---
 .../maven/KotlinTestJSCompilerMojo.java       |  9 ++-
 .../maven/MavenPluginLogMessageCollector.java | 50 +++++++-------
 .../jetbrains/kotlin/maven/MetadataMojo.java  | 16 +++++
 .../jetbrains/kotlin/maven/PluginOption.java  | 18 ++++-
 .../maven/ScriptExecutionException.java       |  3 +-
 .../kotlin/maven/TestMetadataMojo.java        | 16 +++++
 .../java/org/jetbrains/kotlin/maven/Util.java | 15 ++---
 .../maven/incremental/MavenICReporter.java    | 18 ++++-
 .../kapt/AnnotationProcessingManager.java     | 37 +++++++----
 .../maven/kapt/KaptJVMCompilerMojo.java       | 24 +++++--
 .../kotlin/maven/kapt/KaptOption.java         | 16 +++++
 .../maven/kapt/KaptTestJvmCompilerMojo.java   | 18 ++++-
 20 files changed, 286 insertions(+), 160 deletions(-)

diff --git a/libraries/tools/kotlin-maven-plugin/src/main/java/org/jetbrains/kotlin/maven/ExecuteKotlinScriptMojo.java b/libraries/tools/kotlin-maven-plugin/src/main/java/org/jetbrains/kotlin/maven/ExecuteKotlinScriptMojo.java
index 39dee5626ff..bfd3737f7e5 100644
--- a/libraries/tools/kotlin-maven-plugin/src/main/java/org/jetbrains/kotlin/maven/ExecuteKotlinScriptMojo.java
+++ b/libraries/tools/kotlin-maven-plugin/src/main/java/org/jetbrains/kotlin/maven/ExecuteKotlinScriptMojo.java
@@ -23,7 +23,6 @@ import org.apache.maven.artifact.DefaultArtifact;
 import org.apache.maven.artifact.handler.ArtifactHandler;
 import org.apache.maven.artifact.handler.manager.ArtifactHandlerManager;
 import org.apache.maven.artifact.repository.ArtifactRepository;
-import org.apache.maven.model.Dependency;
 import org.apache.maven.plugin.AbstractMojo;
 import org.apache.maven.plugin.MojoExecutionException;
 import org.apache.maven.plugin.MojoFailureException;
@@ -58,6 +57,7 @@ import java.io.IOException;
 import java.util.ArrayList;
 import java.util.HashMap;
 import java.util.List;
+import java.util.stream.Collectors;
 
 /**
  * Allows to execute kotlin script files during the build process.
@@ -106,13 +106,13 @@ public class ExecuteKotlinScriptMojo extends AbstractMojo {
     @Parameter(defaultValue = "${localRepository}", required = true, readonly = true)
     private ArtifactRepository localRepository;
 
-    @Parameter(property = "kotlin.compiler.scriptTemplates", required = false, readonly = false)
+    @Parameter(property = "kotlin.compiler.scriptTemplates")
     protected List<String> scriptTemplates;
 
-    @Parameter(property = "kotlin.compiler.scriptArguments", required = false, readonly = false)
+    @Parameter(property = "kotlin.compiler.scriptArguments")
     protected List<String> scriptArguments;
 
-    @Parameter(property = "kotlin.compiler.scriptClasspath", required = false, readonly = false)
+    @Parameter(property = "kotlin.compiler.scriptClasspath")
     protected List<String> scriptClasspath;
 
     @Component
@@ -167,7 +167,7 @@ public class ExecuteKotlinScriptMojo extends AbstractMojo {
 
             configuration.put(CLIConfigurationKeys.MESSAGE_COLLECTOR_KEY, messageCollector);
 
-            List<File> deps = new ArrayList<File>();
+            List<File> deps = new ArrayList<>();
 
             deps.addAll(PathUtil.getJdkClassesRootsFromCurrentJre());
             deps.addAll(getDependenciesForScript());
@@ -184,7 +184,10 @@ public class ExecuteKotlinScriptMojo extends AbstractMojo {
             configuration.add(JVMConfigurationKeys.CONTENT_ROOTS, new KotlinSourceRoot(scriptFile.getAbsolutePath()));
             configuration.put(CommonConfigurationKeys.MODULE_NAME, JvmAbi.DEFAULT_MODULE_NAME);
 
-            K2JVMCompiler.Companion.configureScriptDefinitions(scriptTemplates.toArray(new String[scriptTemplates.size()]), configuration, messageCollector, new HashMap<String, Object>());
+            K2JVMCompiler.Companion.configureScriptDefinitions(
+                    scriptTemplates.toArray(new String[scriptTemplates.size()]),
+                    configuration, messageCollector, new HashMap<>()
+            );
 
             KotlinCoreEnvironment environment = KotlinCoreEnvironment.createForProduction(rootDisposable, configuration, EnvironmentConfigFiles.JVM_CONFIG_FILES);
 
@@ -214,7 +217,7 @@ public class ExecuteKotlinScriptMojo extends AbstractMojo {
     }
 
     private List<File> getDependenciesForScript() throws MojoExecutionException {
-        List<File> deps = new ArrayList<File>();
+        List<File> deps = new ArrayList<>();
 
         deps.addAll(getKotlinRuntimeDependencies());
         deps.add(getThisPluginAsDependency());
@@ -234,25 +237,13 @@ public class ExecuteKotlinScriptMojo extends AbstractMojo {
         return getArtifactFile(artifact);
     }
 
-    private File getDependencyFile(Dependency dep) {
-        ArtifactHandler artifactHandler = artifactHandlerManager.getArtifactHandler(dep.getType());
-        Artifact artifact = new DefaultArtifact(dep.getGroupId(), dep.getArtifactId(), dep.getVersion(), null, dep.getType(), null, artifactHandler);
-        return getArtifactFile(artifact);
-    }
-
     private File getArtifactFile(Artifact artifact) {
         localRepository.find(artifact);
         return artifact.getFile();
     }
 
     private List<File> getThisPluginDependencies() {
-        List<File> files = new ArrayList<File>();
-
-        for (ComponentDependency dep: plugin.getDependencies()) {
-            files.add(getDependencyFile(dep));
-        }
-
-        return files;
+        return plugin.getDependencies().stream().map(this::getDependencyFile).collect(Collectors.toList());
     }
 
     private File getThisPluginAsDependency() {
@@ -269,7 +260,7 @@ public class ExecuteKotlinScriptMojo extends AbstractMojo {
         Artifact stdlibDep = null;
         Artifact runtimeDep = null;
 
-        ArrayList<File> files = new ArrayList<File>(2);
+        ArrayList<File> files = new ArrayList<>(2);
 
         for (Artifact dep: project.getArtifacts()) {
             if (dep.getArtifactId().equals("kotlin-stdlib")) {
@@ -297,4 +288,4 @@ public class ExecuteKotlinScriptMojo extends AbstractMojo {
         //     at com.intellij.openapi.application.PathManager.getHomePath(PathManager.java:96)
         new K2JVMCompiler();
     }
-}
\ No newline at end of file
+}
diff --git a/libraries/tools/kotlin-maven-plugin/src/main/java/org/jetbrains/kotlin/maven/IdeaCoreLoggerFactory.java b/libraries/tools/kotlin-maven-plugin/src/main/java/org/jetbrains/kotlin/maven/IdeaCoreLoggerFactory.java
index 032b2943ebe..fc5cfa08e61 100644
--- a/libraries/tools/kotlin-maven-plugin/src/main/java/org/jetbrains/kotlin/maven/IdeaCoreLoggerFactory.java
+++ b/libraries/tools/kotlin-maven-plugin/src/main/java/org/jetbrains/kotlin/maven/IdeaCoreLoggerFactory.java
@@ -1,3 +1,19 @@
+/*
+ * Copyright 2010-2017 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package org.jetbrains.kotlin.maven;
 
 import com.intellij.openapi.diagnostic.Logger;
diff --git a/libraries/tools/kotlin-maven-plugin/src/main/java/org/jetbrains/kotlin/maven/K2JSCompilerMojo.java b/libraries/tools/kotlin-maven-plugin/src/main/java/org/jetbrains/kotlin/maven/K2JSCompilerMojo.java
index 1bd7aee1e42..af8dc5268d7 100644
--- a/libraries/tools/kotlin-maven-plugin/src/main/java/org/jetbrains/kotlin/maven/K2JSCompilerMojo.java
+++ b/libraries/tools/kotlin-maven-plugin/src/main/java/org/jetbrains/kotlin/maven/K2JSCompilerMojo.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2010-2013 JetBrains s.r.o.
+ * Copyright 2010-2017 JetBrains s.r.o.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -102,7 +102,7 @@ public class K2JSCompilerMojo extends KotlinCompileMojoBase<K2JSCompilerArgument
         arguments.moduleKind = moduleKind;
         arguments.main = main;
 
-        List<String> libraries = null;
+        List<String> libraries;
         try {
             libraries = getKotlinJavascriptLibraryFiles();
         } catch (DependencyResolutionRequiredException e) {
@@ -118,7 +118,7 @@ public class K2JSCompilerMojo extends KotlinCompileMojoBase<K2JSCompilerArgument
         if (outputFile != null) {
             ConcurrentMap<String, List<String>> collector = getOutputDirectoriesCollector();
             String key = project.getArtifactId();
-            List<String> paths = collector.computeIfAbsent(key, k -> Collections.synchronizedList(new ArrayList<String>()));
+            List<String> paths = collector.computeIfAbsent(key, k -> Collections.synchronizedList(new ArrayList<>()));
             paths.add(new File(outputFile).getParent());
         }
 
@@ -145,7 +145,7 @@ public class K2JSCompilerMojo extends KotlinCompileMojoBase<K2JSCompilerArgument
      */
     @NotNull
     private List<String> getKotlinJavascriptLibraryFiles() throws DependencyResolutionRequiredException {
-        List<String> libraries = new ArrayList<String>();
+        List<String> libraries = new ArrayList<>();
 
         for (String path : getClassPathElements()) {
             File file = new File(path);
@@ -197,7 +197,7 @@ public class K2JSCompilerMojo extends KotlinCompileMojoBase<K2JSCompilerArgument
         try {
             ConcurrentMap<String, List<String>> collector = (ConcurrentMap<String, List<String>>) getPluginContext().get(OUTPUT_DIRECTORIES_COLLECTOR_PROPERTY_NAME);
             if (collector == null) {
-                collector = new ConcurrentSkipListMap<String, List<String>>();
+                collector = new ConcurrentSkipListMap<>();
                 getPluginContext().put(OUTPUT_DIRECTORIES_COLLECTOR_PROPERTY_NAME, collector);
             }
 
diff --git a/libraries/tools/kotlin-maven-plugin/src/main/java/org/jetbrains/kotlin/maven/K2JVMCompileMojo.java b/libraries/tools/kotlin-maven-plugin/src/main/java/org/jetbrains/kotlin/maven/K2JVMCompileMojo.java
index 27e96616658..894a1888367 100644
--- a/libraries/tools/kotlin-maven-plugin/src/main/java/org/jetbrains/kotlin/maven/K2JVMCompileMojo.java
+++ b/libraries/tools/kotlin-maven-plugin/src/main/java/org/jetbrains/kotlin/maven/K2JVMCompileMojo.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2010-2013 JetBrains s.r.o.
+ * Copyright 2010-2017 JetBrains s.r.o.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -18,7 +18,10 @@ package org.jetbrains.kotlin.maven;
 
 import org.apache.maven.plugin.MojoExecutionException;
 import org.apache.maven.plugin.MojoFailureException;
-import org.apache.maven.plugins.annotations.*;
+import org.apache.maven.plugins.annotations.LifecyclePhase;
+import org.apache.maven.plugins.annotations.Mojo;
+import org.apache.maven.plugins.annotations.Parameter;
+import org.apache.maven.plugins.annotations.ResolutionScope;
 import org.apache.maven.project.MavenProject;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
@@ -34,7 +37,8 @@ import org.jetbrains.kotlin.maven.kapt.AnnotationProcessingManager;
 import java.io.File;
 import java.io.IOException;
 import java.net.URL;
-import java.util.*;
+import java.util.ArrayList;
+import java.util.List;
 
 import static com.intellij.openapi.util.text.StringUtil.join;
 import static org.jetbrains.kotlin.maven.Util.filterClassPath;
@@ -64,22 +68,22 @@ public class K2JVMCompileMojo extends KotlinCompileMojoBase<K2JVMCompilerArgumen
     @Parameter(defaultValue = "${project.artifactId}-test", required = true, readonly = true)
     protected String testModuleName;
 
-    @Parameter(property = "kotlin.compiler.jvmTarget", required = false, readonly = false)
+    @Parameter(property = "kotlin.compiler.jvmTarget")
     protected String jvmTarget;
 
-    @Parameter(property = "kotlin.compiler.jdkHome", required = false, readonly = false)
+    @Parameter(property = "kotlin.compiler.jdkHome")
     protected String jdkHome;
 
-    @Parameter(property = "kotlin.compiler.scriptTemplates", required = false, readonly = false)
+    @Parameter(property = "kotlin.compiler.scriptTemplates")
     protected List<String> scriptTemplates;
 
-    @Parameter(property = "kotlin.compiler.incremental", defaultValue = "false", required = false, readonly = false)
+    @Parameter(property = "kotlin.compiler.incremental", defaultValue = "false")
     private boolean myIncremental;
 
-    @Parameter(property = "kotlin.compiler.incremental.cache.root", defaultValue = "${project.build.directory}/kotlin-ic", required = false, readonly = false)
+    @Parameter(property = "kotlin.compiler.incremental.cache.root", defaultValue = "${project.build.directory}/kotlin-ic")
     public String incrementalCachesRoot;
 
-    @Parameter(property = "kotlin.compiler.javaParameters", required = false, readonly = false)
+    @Parameter(property = "kotlin.compiler.javaParameters")
     protected boolean javaParameters;
 
     @NotNull
@@ -119,7 +123,7 @@ public class K2JVMCompileMojo extends KotlinCompileMojoBase<K2JVMCompilerArgumen
 
         File sourcesDir = AnnotationProcessingManager.getGeneratedSourcesDirectory(project, getSourceSetName());
         if (sourcesDir.isDirectory()) {
-            paths = new ArrayList<String>(paths);
+            paths = new ArrayList<>(paths);
             paths.add(sourcesDir.getAbsolutePath());
         }
 
@@ -184,13 +188,14 @@ public class K2JVMCompileMojo extends KotlinCompileMojoBase<K2JVMCompilerArgumen
                 if (toolsJar != null) {
                     project.getClassRealm().addURL(toolsJar);
                 }
-            } catch (IOException ex) {}
+            } catch (IOException ignored) {}
         }
 
         super.execute();
     }
 
     @Override
+    @NotNull
     protected ExitCode execCompiler(
             CLICompiler<K2JVMCompilerArguments> compiler,
             MessageCollector messageCollector,
diff --git a/libraries/tools/kotlin-maven-plugin/src/main/java/org/jetbrains/kotlin/maven/KotlinCompilationFailureException.java b/libraries/tools/kotlin-maven-plugin/src/main/java/org/jetbrains/kotlin/maven/KotlinCompilationFailureException.java
index f74ba8ec0d2..61e9d6c3b15 100644
--- a/libraries/tools/kotlin-maven-plugin/src/main/java/org/jetbrains/kotlin/maven/KotlinCompilationFailureException.java
+++ b/libraries/tools/kotlin-maven-plugin/src/main/java/org/jetbrains/kotlin/maven/KotlinCompilationFailureException.java
@@ -1,22 +1,29 @@
+/*
+ * Copyright 2010-2017 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package org.jetbrains.kotlin.maven;
 
 import org.apache.maven.plugin.compiler.CompilationFailureException;
 import org.codehaus.plexus.compiler.CompilerMessage;
 import org.jetbrains.annotations.NotNull;
 
-import java.util.Collections;
 import java.util.List;
 
 public class KotlinCompilationFailureException extends CompilationFailureException {
-    private List<CompilerMessage> compilerMessages;
-
     public KotlinCompilationFailureException(@NotNull List<CompilerMessage> compilerMessages) {
         super(compilerMessages);
-        this.compilerMessages = Collections.unmodifiableList(compilerMessages);
-    }
-
-    public List<CompilerMessage> getCompilerMessages() {
-        return compilerMessages;
     }
 }
-
diff --git a/libraries/tools/kotlin-maven-plugin/src/main/java/org/jetbrains/kotlin/maven/KotlinCompileMojoBase.java b/libraries/tools/kotlin-maven-plugin/src/main/java/org/jetbrains/kotlin/maven/KotlinCompileMojoBase.java
index e5e5207ceb7..50c7e7d60d8 100644
--- a/libraries/tools/kotlin-maven-plugin/src/main/java/org/jetbrains/kotlin/maven/KotlinCompileMojoBase.java
+++ b/libraries/tools/kotlin-maven-plugin/src/main/java/org/jetbrains/kotlin/maven/KotlinCompileMojoBase.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2010-2013 JetBrains s.r.o.
+ * Copyright 2010-2017 JetBrains s.r.o.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -20,14 +20,16 @@ import com.google.common.base.Joiner;
 import com.intellij.openapi.diagnostic.Logger;
 import com.intellij.openapi.util.io.FileUtil;
 import com.intellij.util.ArrayUtil;
-import com.intellij.util.Processor;
 import org.apache.maven.artifact.Artifact;
 import org.apache.maven.artifact.resolver.ArtifactResolutionRequest;
 import org.apache.maven.artifact.resolver.ArtifactResolutionResult;
 import org.apache.maven.model.Dependency;
 import org.apache.maven.model.Plugin;
 import org.apache.maven.model.PluginExecution;
-import org.apache.maven.plugin.*;
+import org.apache.maven.plugin.AbstractMojo;
+import org.apache.maven.plugin.MojoExecution;
+import org.apache.maven.plugin.MojoExecutionException;
+import org.apache.maven.plugin.MojoFailureException;
 import org.apache.maven.plugins.annotations.Component;
 import org.apache.maven.plugins.annotations.Parameter;
 import org.apache.maven.project.MavenProject;
@@ -80,18 +82,15 @@ public abstract class KotlinCompileMojoBase<A extends CommonCompilerArguments> e
     @Parameter
     private boolean multiPlatform = false;
 
-    private List<String> getAppliedCompilerPlugins() {
-        return (compilerPlugins == null) ? Collections.<String>emptyList() : compilerPlugins;
-    }
-
     protected List<String> getSourceFilePaths() {
         if (sourceDirs != null && !sourceDirs.isEmpty()) return sourceDirs;
         return project.getCompileSourceRoots();
     }
 
+    @NotNull
     private List<File> getSourceDirs() {
         List<String> sources = getSourceFilePaths();
-        List<File> result = new ArrayList<File>(sources.size());
+        List<File> result = new ArrayList<>(sources.size());
 
         for (String source : sources) {
             addSourceRoots(result, source);
@@ -168,17 +167,17 @@ public abstract class KotlinCompileMojoBase<A extends CommonCompilerArguments> e
     public String testModule;
 
 
-    @Parameter(property = "kotlin.compiler.languageVersion", required = false, readonly = false)
+    @Parameter(property = "kotlin.compiler.languageVersion")
     protected String languageVersion;
 
 
-    @Parameter(property = "kotlin.compiler.apiVersion", required = false, readonly = false)
+    @Parameter(property = "kotlin.compiler.apiVersion")
     protected String apiVersion;
 
     /**
      * possible values are: enable, error, warn
      */
-    @Parameter(property = "kotlin.compiler.experimental.coroutines", required = false, readonly = false)
+    @Parameter(property = "kotlin.compiler.experimental.coroutines")
     @Nullable
     protected String experimentalCoroutines;
 
@@ -237,17 +236,9 @@ public abstract class KotlinCompileMojoBase<A extends CommonCompilerArguments> e
     }
 
     private boolean hasKotlinFilesInSources() throws MojoExecutionException {
-        List<File> sources = getSourceDirs();
-        if (sources == null || sources.isEmpty()) return false;
-
-        for (File root : sources) {
+        for (File root : getSourceDirs()) {
             if (root.exists()) {
-                boolean sourcesExists = !FileUtil.processFilesRecursively(root, new Processor<File>() {
-                    @Override
-                    public boolean process(File file) {
-                        return !file.getName().endsWith(".kt");
-                    }
-                });
+                boolean sourcesExists = !FileUtil.processFilesRecursively(root, file -> !file.getName().endsWith(".kt"));
                 if (sourcesExists) return true;
             }
         }
@@ -293,9 +284,9 @@ public abstract class KotlinCompileMojoBase<A extends CommonCompilerArguments> e
     protected abstract void configureSpecificCompilerArguments(@NotNull A arguments, @NotNull List<File> sourceRoots) throws MojoExecutionException;
 
     private List<String> getCompilerPluginClassPaths() {
-        ArrayList<String> result = new ArrayList<String>();
+        ArrayList<String> result = new ArrayList<>();
 
-        List<File> files = new ArrayList<File>();
+        List<File> files = new ArrayList<>();
 
         for (Dependency dependency : mojoExecution.getPlugin().getDependencies()) {
             Artifact artifact = system.createDependencyArtifact(dependency);
@@ -319,14 +310,15 @@ public abstract class KotlinCompileMojoBase<A extends CommonCompilerArguments> e
 
     @NotNull
     private Map<String, KotlinMavenPluginExtension> loadCompilerPlugins() throws PluginNotFoundException {
-        Map<String, KotlinMavenPluginExtension> loadedPlugins = new HashMap<String, KotlinMavenPluginExtension>();
-        for (String pluginName : getAppliedCompilerPlugins()) {
+        if (compilerPlugins == null) return Collections.emptyMap();
+
+        Map<String, KotlinMavenPluginExtension> loadedPlugins = new HashMap<>();
+        for (String pluginName : compilerPlugins) {
             getLog().debug("Looking for plugin " + pluginName);
             try {
                 KotlinMavenPluginExtension extension = container.lookup(KotlinMavenPluginExtension.class, pluginName);
                 loadedPlugins.put(pluginName, extension);
                 getLog().debug("Got plugin instance" + pluginName + " of type " + extension.getClass().getName());
-
             } catch (ComponentLookupException e) {
                 getLog().debug("Unable to get plugin instance" + pluginName);
                 throw new PluginNotFoundException(pluginName, e);
@@ -337,7 +329,7 @@ public abstract class KotlinCompileMojoBase<A extends CommonCompilerArguments> e
 
     @NotNull
     private List<String> renderCompilerPluginOptions(@NotNull List<PluginOption> options) {
-        List<String> renderedOptions = new ArrayList<String>(options.size());
+        List<String> renderedOptions = new ArrayList<>(options.size());
         for (PluginOption option : options) {
             renderedOptions.add(option.toString());
         }
@@ -350,7 +342,7 @@ public abstract class KotlinCompileMojoBase<A extends CommonCompilerArguments> e
             throw new IllegalStateException("No mojoExecution injected");
         }
 
-        List<PluginOption> pluginOptions = new ArrayList<PluginOption>();
+        List<PluginOption> pluginOptions = new ArrayList<>();
 
         Map<String, KotlinMavenPluginExtension> plugins = loadCompilerPlugins();
 
@@ -374,15 +366,9 @@ public abstract class KotlinCompileMojoBase<A extends CommonCompilerArguments> e
             pluginOptions.addAll(parseUserProvidedPluginOptions(this.pluginOptions, plugins));
         }
 
-        Map<String, List<PluginOption>> optionsByPluginName = new LinkedHashMap<String, List<PluginOption>>();
+        Map<String, List<PluginOption>> optionsByPluginName = new LinkedHashMap<>();
         for (PluginOption option : pluginOptions) {
-            List<PluginOption> optionsForPlugin = optionsByPluginName.get(option.pluginName);
-            if (optionsForPlugin == null) {
-                optionsForPlugin = new ArrayList<PluginOption>();
-                optionsByPluginName.put(option.pluginName, optionsForPlugin);
-            }
-
-            optionsForPlugin.add(option);
+            optionsByPluginName.computeIfAbsent(option.pluginName, key -> new ArrayList<>()).add(option);
         }
 
         for (Map.Entry<String, List<PluginOption>> entry : optionsByPluginName.entrySet()) {
@@ -410,7 +396,7 @@ public abstract class KotlinCompileMojoBase<A extends CommonCompilerArguments> e
             @NotNull List<String> rawOptions,
             @NotNull Map<String, KotlinMavenPluginExtension> plugins
     ) throws PluginOptionIllegalFormatException, PluginNotFoundException {
-        List<PluginOption> pluginOptions = new ArrayList<PluginOption>(rawOptions.size());
+        List<PluginOption> pluginOptions = new ArrayList<>(rawOptions.size());
 
         for (String rawOption : rawOptions) {
             Matcher matcher = OPTION_PATTERN.matcher(rawOption);
@@ -434,7 +420,7 @@ public abstract class KotlinCompileMojoBase<A extends CommonCompilerArguments> e
 
     @NotNull
     private List<File> getSourceRoots() throws MojoExecutionException {
-        List<File> sourceRoots = new ArrayList<File>();
+        List<File> sourceRoots = new ArrayList<>();
         for (File sourceDir : getSourceDirs()) {
             if (sourceDir.exists()) {
                 sourceRoots.add(sourceDir);
@@ -489,9 +475,7 @@ public abstract class KotlinCompileMojoBase<A extends CommonCompilerArguments> e
         List<String> pluginArguments;
         try {
             pluginArguments = renderCompilerPluginOptions(getCompilerPluginOptions());
-        } catch (PluginNotFoundException e) {
-            throw new MojoExecutionException(e.getMessage(), e);
-        } catch (PluginOptionIllegalFormatException e) {
+        } catch (PluginNotFoundException | PluginOptionIllegalFormatException e) {
             throw new MojoExecutionException(e.getMessage(), e);
         }
 
diff --git a/libraries/tools/kotlin-maven-plugin/src/main/java/org/jetbrains/kotlin/maven/KotlinMavenPluginExtension.java b/libraries/tools/kotlin-maven-plugin/src/main/java/org/jetbrains/kotlin/maven/KotlinMavenPluginExtension.java
index 1535ea5e777..33f8ebb4e97 100644
--- a/libraries/tools/kotlin-maven-plugin/src/main/java/org/jetbrains/kotlin/maven/KotlinMavenPluginExtension.java
+++ b/libraries/tools/kotlin-maven-plugin/src/main/java/org/jetbrains/kotlin/maven/KotlinMavenPluginExtension.java
@@ -1,3 +1,19 @@
+/*
+ * Copyright 2010-2017 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package org.jetbrains.kotlin.maven;
 
 import org.apache.maven.plugin.MojoExecution;
diff --git a/libraries/tools/kotlin-maven-plugin/src/main/java/org/jetbrains/kotlin/maven/KotlinTestCompileMojo.java b/libraries/tools/kotlin-maven-plugin/src/main/java/org/jetbrains/kotlin/maven/KotlinTestCompileMojo.java
index c91b0ced0fc..5311f271a2f 100644
--- a/libraries/tools/kotlin-maven-plugin/src/main/java/org/jetbrains/kotlin/maven/KotlinTestCompileMojo.java
+++ b/libraries/tools/kotlin-maven-plugin/src/main/java/org/jetbrains/kotlin/maven/KotlinTestCompileMojo.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2010-2013 JetBrains s.r.o.
+ * Copyright 2010-2017 JetBrains s.r.o.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -26,20 +26,15 @@ import org.apache.maven.project.MavenProject;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.kotlin.cli.common.arguments.K2JVMCompilerArguments;
 import org.jetbrains.kotlin.maven.kapt.AnnotationProcessingManager;
-import org.jetbrains.kotlin.maven.kapt.KaptTestJvmCompilerMojo;
 
 import java.io.File;
 import java.util.List;
 
+// Note!
+// Please change {@link KaptTestJvmCompilerMojo} because it was mostly copied from this file.
 /**
  * Compiles Kotlin test sources
- *
- * @noinspection UnusedDeclaration
  */
-
-/** Note!
- * Please change {@link KaptTestJvmCompilerMojo} as well as it was majorly copied from this file. */
-
 @Mojo(name = "test-compile",
         defaultPhase = LifecyclePhase.TEST_COMPILE,
         requiresDependencyResolution = ResolutionScope.TEST,
diff --git a/libraries/tools/kotlin-maven-plugin/src/main/java/org/jetbrains/kotlin/maven/KotlinTestJSCompilerMojo.java b/libraries/tools/kotlin-maven-plugin/src/main/java/org/jetbrains/kotlin/maven/KotlinTestJSCompilerMojo.java
index aaf4e2c3d64..07f5e7234c3 100644
--- a/libraries/tools/kotlin-maven-plugin/src/main/java/org/jetbrains/kotlin/maven/KotlinTestJSCompilerMojo.java
+++ b/libraries/tools/kotlin-maven-plugin/src/main/java/org/jetbrains/kotlin/maven/KotlinTestJSCompilerMojo.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2010-2013 JetBrains s.r.o.
+ * Copyright 2010-2017 JetBrains s.r.o.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -29,12 +29,11 @@ import org.jetbrains.annotations.NotNull;
 import org.jetbrains.kotlin.cli.common.arguments.K2JSCompilerArguments;
 
 import java.io.File;
-import java.util.List;
 import java.util.Collections;
+import java.util.List;
+
 /**
  * Converts Kotlin to JavaScript code
- *
- * @noinspection UnusedDeclaration
  */
 @Mojo(name = "test-js",
         defaultPhase = LifecyclePhase.TEST_COMPILE,
@@ -74,7 +73,7 @@ public class KotlinTestJSCompilerMojo extends K2JSCompilerMojo {
     private String outputFile;
 
     /**
-     * Flag enables or disables metafile generation
+     * Flag enables or disables .meta.js file generation
      */
     @Parameter(defaultValue = "true")
     private boolean metaInfo;
diff --git a/libraries/tools/kotlin-maven-plugin/src/main/java/org/jetbrains/kotlin/maven/MavenPluginLogMessageCollector.java b/libraries/tools/kotlin-maven-plugin/src/main/java/org/jetbrains/kotlin/maven/MavenPluginLogMessageCollector.java
index 7d4fa11c435..2fa130ef475 100644
--- a/libraries/tools/kotlin-maven-plugin/src/main/java/org/jetbrains/kotlin/maven/MavenPluginLogMessageCollector.java
+++ b/libraries/tools/kotlin-maven-plugin/src/main/java/org/jetbrains/kotlin/maven/MavenPluginLogMessageCollector.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2010-2016 JetBrains s.r.o.
+ * Copyright 2010-2017 JetBrains s.r.o.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -17,8 +17,6 @@
 package org.jetbrains.kotlin.maven;
 
 import com.intellij.openapi.util.Pair;
-import kotlin.collections.CollectionsKt;
-import kotlin.jvm.functions.Function1;
 import org.apache.maven.plugin.logging.Log;
 import org.codehaus.plexus.compiler.CompilerMessage;
 import org.jetbrains.annotations.NotNull;
@@ -30,12 +28,13 @@ import org.jetbrains.kotlin.cli.common.messages.MessageCollector;
 import java.util.ArrayList;
 import java.util.Collections;
 import java.util.List;
+import java.util.stream.Collectors;
 
 import static com.google.common.base.Preconditions.checkNotNull;
 
 public class MavenPluginLogMessageCollector implements MessageCollector {
     private final Log log;
-    private final ArrayList<Pair<CompilerMessageLocation, String>> collectedErrors = new ArrayList<Pair<CompilerMessageLocation, String>>();
+    private final ArrayList<Pair<CompilerMessageLocation, String>> collectedErrors = new ArrayList<>();
 
     public MavenPluginLogMessageCollector(Log log) {
         this.log = checkNotNull(log, "log shouldn't be null");
@@ -65,7 +64,7 @@ public class MavenPluginLogMessageCollector implements MessageCollector {
         switch (severity) {
             case EXCEPTION:
             case ERROR: {
-                collectedErrors.add(new Pair<CompilerMessageLocation, String>(location, message));
+                collectedErrors.add(new Pair<>(location, message));
                 log.error(text);
                 break;
             }
@@ -90,31 +89,26 @@ public class MavenPluginLogMessageCollector implements MessageCollector {
     }
 
     public void throwKotlinCompilerException() throws KotlinCompilationFailureException {
-        throw new KotlinCompilationFailureException(
-                CollectionsKt.map(getCollectedErrors(), new Function1<Pair<CompilerMessageLocation, String>, CompilerMessage>() {
-                    @Override
-                    public CompilerMessage invoke(Pair<CompilerMessageLocation, String> pair) {
-                        CompilerMessageLocation location = pair.getFirst();
-                        String message = pair.getSecond();
-                        if (location == null) {
-                            return new CompilerMessage(null, CompilerMessage.Kind.ERROR, 0, 0, 0, 0, message);
-                        }
+        throw new KotlinCompilationFailureException(getCollectedErrors().stream().map(pair -> {
+            CompilerMessageLocation location = pair.getFirst();
+            String message = pair.getSecond();
+            if (location == null) {
+                return new CompilerMessage(null, CompilerMessage.Kind.ERROR, 0, 0, 0, 0, message);
+            }
 
-                        String lineContent = location.getLineContent();
-                        int lineContentLength = lineContent == null ? 0 : lineContent.length();
+            String lineContent = location.getLineContent();
+            int lineContentLength = lineContent == null ? 0 : lineContent.length();
 
-                        return new CompilerMessage(
-                                location.getPath(),
-                                CompilerMessage.Kind.ERROR,
-                                fixLocation(location.getLine()),
-                                fixLocation(location.getColumn()),
-                                fixLocation(location.getLine()),
-                                Math.min(fixLocation(location.getColumn()), lineContentLength),
-                                message
-                        );
-                    }
-                })
-        );
+            return new CompilerMessage(
+                    location.getPath(),
+                    CompilerMessage.Kind.ERROR,
+                    fixLocation(location.getLine()),
+                    fixLocation(location.getColumn()),
+                    fixLocation(location.getLine()),
+                    Math.min(fixLocation(location.getColumn()), lineContentLength),
+                    message
+            );
+        }).collect(Collectors.toList()));
     }
 
     private static int fixLocation(int n) {
diff --git a/libraries/tools/kotlin-maven-plugin/src/main/java/org/jetbrains/kotlin/maven/MetadataMojo.java b/libraries/tools/kotlin-maven-plugin/src/main/java/org/jetbrains/kotlin/maven/MetadataMojo.java
index a7ef4879857..a4343ead37c 100644
--- a/libraries/tools/kotlin-maven-plugin/src/main/java/org/jetbrains/kotlin/maven/MetadataMojo.java
+++ b/libraries/tools/kotlin-maven-plugin/src/main/java/org/jetbrains/kotlin/maven/MetadataMojo.java
@@ -1,3 +1,19 @@
+/*
+ * Copyright 2010-2017 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package org.jetbrains.kotlin.maven;
 
 import org.apache.maven.plugin.MojoExecutionException;
diff --git a/libraries/tools/kotlin-maven-plugin/src/main/java/org/jetbrains/kotlin/maven/PluginOption.java b/libraries/tools/kotlin-maven-plugin/src/main/java/org/jetbrains/kotlin/maven/PluginOption.java
index 867cdee05f8..87e61ae6533 100644
--- a/libraries/tools/kotlin-maven-plugin/src/main/java/org/jetbrains/kotlin/maven/PluginOption.java
+++ b/libraries/tools/kotlin-maven-plugin/src/main/java/org/jetbrains/kotlin/maven/PluginOption.java
@@ -1,3 +1,19 @@
+/*
+ * Copyright 2010-2017 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package org.jetbrains.kotlin.maven;
 
 public class PluginOption {
@@ -21,4 +37,4 @@ public class PluginOption {
     public String toString() {
         return "plugin:" + pluginId + ":" + key + "=" + value;
     }
-}
\ No newline at end of file
+}
diff --git a/libraries/tools/kotlin-maven-plugin/src/main/java/org/jetbrains/kotlin/maven/ScriptExecutionException.java b/libraries/tools/kotlin-maven-plugin/src/main/java/org/jetbrains/kotlin/maven/ScriptExecutionException.java
index e4f2fd4f6b2..3d3fc2714ad 100644
--- a/libraries/tools/kotlin-maven-plugin/src/main/java/org/jetbrains/kotlin/maven/ScriptExecutionException.java
+++ b/libraries/tools/kotlin-maven-plugin/src/main/java/org/jetbrains/kotlin/maven/ScriptExecutionException.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2010-2016 JetBrains s.r.o.
+ * Copyright 2010-2017 JetBrains s.r.o.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -14,7 +14,6 @@
  * limitations under the License.
  */
 
-
 package org.jetbrains.kotlin.maven;
 
 import org.apache.maven.plugin.MojoExecutionException;
diff --git a/libraries/tools/kotlin-maven-plugin/src/main/java/org/jetbrains/kotlin/maven/TestMetadataMojo.java b/libraries/tools/kotlin-maven-plugin/src/main/java/org/jetbrains/kotlin/maven/TestMetadataMojo.java
index 495cabdd5e6..278bc571e1a 100644
--- a/libraries/tools/kotlin-maven-plugin/src/main/java/org/jetbrains/kotlin/maven/TestMetadataMojo.java
+++ b/libraries/tools/kotlin-maven-plugin/src/main/java/org/jetbrains/kotlin/maven/TestMetadataMojo.java
@@ -1,3 +1,19 @@
+/*
+ * Copyright 2010-2017 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package org.jetbrains.kotlin.maven;
 
 import org.apache.maven.plugin.MojoExecutionException;
diff --git a/libraries/tools/kotlin-maven-plugin/src/main/java/org/jetbrains/kotlin/maven/Util.java b/libraries/tools/kotlin-maven-plugin/src/main/java/org/jetbrains/kotlin/maven/Util.java
index 6d2b2543bfb..7a7f89d3fab 100644
--- a/libraries/tools/kotlin-maven-plugin/src/main/java/org/jetbrains/kotlin/maven/Util.java
+++ b/libraries/tools/kotlin-maven-plugin/src/main/java/org/jetbrains/kotlin/maven/Util.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2010-2016 JetBrains s.r.o.
+ * Copyright 2010-2017 JetBrains s.r.o.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -16,19 +16,14 @@
 
 package org.jetbrains.kotlin.maven;
 
-import kotlin.collections.CollectionsKt;
-import kotlin.jvm.functions.Function1;
-
 import java.io.File;
 import java.util.List;
+import java.util.stream.Collectors;
 
 public class Util {
     static List<String> filterClassPath(final File basedir, List<String> classpath) {
-        return CollectionsKt.filter(classpath, new Function1<String, Boolean>() {
-            @Override
-            public Boolean invoke(String s) {
-                return new File(s).exists() || new File(basedir, s).exists();
-            }
-        });
+        return classpath.stream().filter(s ->
+                new File(s).exists() || new File(basedir, s).exists()
+        ).collect(Collectors.toList());
     }
 }
diff --git a/libraries/tools/kotlin-maven-plugin/src/main/java/org/jetbrains/kotlin/maven/incremental/MavenICReporter.java b/libraries/tools/kotlin-maven-plugin/src/main/java/org/jetbrains/kotlin/maven/incremental/MavenICReporter.java
index 994203f8c16..48c8ff6870a 100644
--- a/libraries/tools/kotlin-maven-plugin/src/main/java/org/jetbrains/kotlin/maven/incremental/MavenICReporter.java
+++ b/libraries/tools/kotlin-maven-plugin/src/main/java/org/jetbrains/kotlin/maven/incremental/MavenICReporter.java
@@ -1,3 +1,19 @@
+/*
+ * Copyright 2010-2017 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package org.jetbrains.kotlin.maven.incremental;
 
 import kotlin.jvm.functions.Function0;
@@ -77,7 +93,7 @@ public class MavenICReporter implements ICReporter {
     }
 
     @NotNull
-    private final Set<File> compiledKotlinFiles = new HashSet<File>();
+    private final Set<File> compiledKotlinFiles = new HashSet<>();
 
     protected boolean isLogEnabled() {
         return false;
diff --git a/libraries/tools/kotlin-maven-plugin/src/main/java/org/jetbrains/kotlin/maven/kapt/AnnotationProcessingManager.java b/libraries/tools/kotlin-maven-plugin/src/main/java/org/jetbrains/kotlin/maven/kapt/AnnotationProcessingManager.java
index d2ea8728d41..483e71fd8f0 100644
--- a/libraries/tools/kotlin-maven-plugin/src/main/java/org/jetbrains/kotlin/maven/kapt/AnnotationProcessingManager.java
+++ b/libraries/tools/kotlin-maven-plugin/src/main/java/org/jetbrains/kotlin/maven/kapt/AnnotationProcessingManager.java
@@ -1,3 +1,19 @@
+/*
+ * Copyright 2010-2017 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package org.jetbrains.kotlin.maven.kapt;
 
 import org.apache.maven.artifact.Artifact;
@@ -68,15 +84,14 @@ public class AnnotationProcessingManager {
 
     @NotNull
     static File getGeneratedClassesDirectory(@NotNull MavenProject project, @NotNull String sourceSetName) {
-        if (sourceSetName.equals(COMPILE_SOURCE_SET_NAME)) {
-            return new File(project.getModel().getBuild().getOutputDirectory());
-        }
-        else if (sourceSetName.equals(TEST_SOURCE_SET_NAME)) {
-            return new File(project.getModel().getBuild().getTestOutputDirectory());
-        }
-        else {
-            throw new IllegalArgumentException("'" + COMPILE_SOURCE_SET_NAME + "' or '" +
-                    TEST_SOURCE_SET_NAME + "' expected");
+        switch (sourceSetName) {
+            case COMPILE_SOURCE_SET_NAME:
+                return new File(project.getModel().getBuild().getOutputDirectory());
+            case TEST_SOURCE_SET_NAME:
+                return new File(project.getModel().getBuild().getTestOutputDirectory());
+            default:
+                throw new IllegalArgumentException("'" + COMPILE_SOURCE_SET_NAME + "' or '" +
+                        TEST_SOURCE_SET_NAME + "' expected");
         }
     }
 
@@ -91,7 +106,7 @@ public class AnnotationProcessingManager {
             aptDependencies = Collections.emptyList();
         }
 
-        Set<Artifact> requiredArtifacts = new LinkedHashSet<Artifact>();
+        Set<Artifact> requiredArtifacts = new LinkedHashSet<>();
 
         requiredArtifacts.add(getArtifact(artifactHandlerManager, KAPT_DEPENDENCY));
 
@@ -114,7 +129,7 @@ public class AnnotationProcessingManager {
             throw new IllegalStateException("Annotation processing artifacts were not resolved.");
         }
 
-        List<String> apClasspath = new ArrayList<String>(resolutionResult.getArtifacts().size());
+        List<String> apClasspath = new ArrayList<>(resolutionResult.getArtifacts().size());
         String kaptCompilerPluginArtifact = null;
 
         for (Artifact artifact : resolutionResult.getArtifacts()) {
diff --git a/libraries/tools/kotlin-maven-plugin/src/main/java/org/jetbrains/kotlin/maven/kapt/KaptJVMCompilerMojo.java b/libraries/tools/kotlin-maven-plugin/src/main/java/org/jetbrains/kotlin/maven/kapt/KaptJVMCompilerMojo.java
index 5ecba584c31..6a63c21a56d 100644
--- a/libraries/tools/kotlin-maven-plugin/src/main/java/org/jetbrains/kotlin/maven/kapt/KaptJVMCompilerMojo.java
+++ b/libraries/tools/kotlin-maven-plugin/src/main/java/org/jetbrains/kotlin/maven/kapt/KaptJVMCompilerMojo.java
@@ -1,3 +1,19 @@
+/*
+ * Copyright 2010-2017 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package org.jetbrains.kotlin.maven.kapt;
 
 import org.apache.maven.artifact.handler.manager.ArtifactHandlerManager;
@@ -15,12 +31,10 @@ import java.io.File;
 import java.util.ArrayList;
 import java.util.List;
 
-import static org.jetbrains.kotlin.maven.kapt.AnnotationProcessingManager.getGeneratedClassesDirectory;
-import static org.jetbrains.kotlin.maven.kapt.AnnotationProcessingManager.getGeneratedSourcesDirectory;
-import static org.jetbrains.kotlin.maven.kapt.AnnotationProcessingManager.getStubsDirectory;
+import static org.jetbrains.kotlin.maven.kapt.AnnotationProcessingManager.*;
 
 /** @noinspection UnusedDeclaration */
-@Mojo(name = "kapt", defaultPhase = LifecyclePhase.PROCESS_SOURCES, requiresDependencyResolution = ResolutionScope.COMPILE, threadSafe = false)
+@Mojo(name = "kapt", defaultPhase = LifecyclePhase.PROCESS_SOURCES, requiresDependencyResolution = ResolutionScope.COMPILE)
 public class KaptJVMCompilerMojo extends K2JVMCompileMojo {
     @Parameter
     private String[] annotationProcessors;
@@ -62,7 +76,7 @@ public class KaptJVMCompilerMojo extends K2JVMCompileMojo {
             @NotNull K2JVMCompilerArguments arguments,
             @NotNull AnnotationProcessingManager.ResolvedArtifacts resolvedArtifacts
     ) {
-        List<KaptOption> options = new ArrayList<KaptOption>();
+        List<KaptOption> options = new ArrayList<>();
 
         options.add(new KaptOption("aptOnly", true));
         options.add(new KaptOption("useLightAnalysis", useLightAnalysis));
diff --git a/libraries/tools/kotlin-maven-plugin/src/main/java/org/jetbrains/kotlin/maven/kapt/KaptOption.java b/libraries/tools/kotlin-maven-plugin/src/main/java/org/jetbrains/kotlin/maven/kapt/KaptOption.java
index 8941e578998..5b15ed34c0e 100644
--- a/libraries/tools/kotlin-maven-plugin/src/main/java/org/jetbrains/kotlin/maven/kapt/KaptOption.java
+++ b/libraries/tools/kotlin-maven-plugin/src/main/java/org/jetbrains/kotlin/maven/kapt/KaptOption.java
@@ -1,3 +1,19 @@
+/*
+ * Copyright 2010-2017 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package org.jetbrains.kotlin.maven.kapt;
 
 import org.jetbrains.annotations.NotNull;
diff --git a/libraries/tools/kotlin-maven-plugin/src/main/java/org/jetbrains/kotlin/maven/kapt/KaptTestJvmCompilerMojo.java b/libraries/tools/kotlin-maven-plugin/src/main/java/org/jetbrains/kotlin/maven/kapt/KaptTestJvmCompilerMojo.java
index e76e20fa96c..155c709adeb 100644
--- a/libraries/tools/kotlin-maven-plugin/src/main/java/org/jetbrains/kotlin/maven/kapt/KaptTestJvmCompilerMojo.java
+++ b/libraries/tools/kotlin-maven-plugin/src/main/java/org/jetbrains/kotlin/maven/kapt/KaptTestJvmCompilerMojo.java
@@ -1,3 +1,19 @@
+/*
+ * Copyright 2010-2017 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package org.jetbrains.kotlin.maven.kapt;
 
 import org.apache.maven.plugin.MojoExecutionException;
@@ -18,7 +34,7 @@ import java.util.List;
  *
  * @noinspection UnusedDeclaration
  */
-@Mojo(name = "test-kapt", defaultPhase = LifecyclePhase.PROCESS_TEST_SOURCES, requiresDependencyResolution = ResolutionScope.TEST, threadSafe = false)
+@Mojo(name = "test-kapt", defaultPhase = LifecyclePhase.PROCESS_TEST_SOURCES, requiresDependencyResolution = ResolutionScope.TEST)
 public class KaptTestJvmCompilerMojo extends KaptJVMCompilerMojo {
     /**
      * Flag to allow test compilation to be skipped.