From 3fc91b013d722409d58a4e1c36af55707943f37b Mon Sep 17 00:00:00 2001
From: "Aleksei.Cherepanov" <aleksei.cherepanov@jetbrains.com>
Date: Wed, 16 Nov 2022 20:02:57 +0000
Subject: [PATCH] Suppress warning for mvn+kapt+jdk9

Suppress the warning about lack of tools.jar, as this jar does not present in JDK9+

#KT-47110 Fixed

Merge-request: KT-MR-7566
Merged-by: Aleksei Cherepanov <aleksei.cherepanov@jetbrains.com>
---
 .../maven/kapt/KaptJVMCompilerMojo.java       | 28 ++++++++++++++-----
 1 file changed, 21 insertions(+), 7 deletions(-)

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 d91df119d41..e18754ed295 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
@@ -40,7 +40,9 @@ import java.util.stream.Collectors;
 import static org.jetbrains.kotlin.maven.Util.joinArrays;
 import static org.jetbrains.kotlin.maven.kapt.AnnotationProcessingManager.*;
 
-/** @noinspection UnusedDeclaration */
+/**
+ * @noinspection UnusedDeclaration
+ */
 @Mojo(name = "kapt", defaultPhase = LifecyclePhase.PROCESS_SOURCES, requiresDependencyResolution = ResolutionScope.COMPILE)
 public class KaptJVMCompilerMojo extends K2JVMCompileMojo {
     @Parameter
@@ -72,7 +74,7 @@ public class KaptJVMCompilerMojo extends K2JVMCompileMojo {
     @Component
     private ArtifactHandlerManager artifactHandlerManager;
 
-    @Parameter( defaultValue = "${session}", readonly = true, required = true )
+    @Parameter(defaultValue = "${session}", readonly = true, required = true)
     private MavenSession session;
 
     @Component
@@ -165,7 +167,7 @@ public class KaptJVMCompilerMojo extends K2JVMCompileMojo {
                 .filter(path -> {
                     File pathFile = new File(path);
                     return !pathFile.equals(generatedSourcesDirectory)
-                            && !pathFile.equals(generatedKotlinSourcesDirectory);
+                           && !pathFile.equals(generatedKotlinSourcesDirectory);
                 })
                 .collect(Collectors.toList());
     }
@@ -187,7 +189,8 @@ public class KaptJVMCompilerMojo extends K2JVMCompileMojo {
     }
 
     @Override
-    protected void configureSpecificCompilerArguments(@NotNull K2JVMCompilerArguments arguments, @NotNull List<File> sourceRoots) throws MojoExecutionException {
+    protected void configureSpecificCompilerArguments(@NotNull K2JVMCompilerArguments arguments, @NotNull List<File> sourceRoots)
+            throws MojoExecutionException {
         super.configureSpecificCompilerArguments(arguments, sourceRoots);
 
         AnnotationProcessingManager.ResolvedArtifacts resolvedArtifacts;
@@ -207,8 +210,8 @@ public class KaptJVMCompilerMojo extends K2JVMCompileMojo {
                 joinArrays(
                         arguments.getPluginClasspaths(),
                         (jdkToolsJarPath == null)
-                                ? new String[]{resolvedArtifacts.kaptCompilerPluginArtifact}
-                                : new String[]{jdkToolsJarPath, resolvedArtifacts.kaptCompilerPluginArtifact}
+                        ? new String[] {resolvedArtifacts.kaptCompilerPluginArtifact}
+                        : new String[] {jdkToolsJarPath, resolvedArtifacts.kaptCompilerPluginArtifact}
                 )
         );
     }
@@ -220,6 +223,16 @@ public class KaptJVMCompilerMojo extends K2JVMCompileMojo {
             getLog().warn("Can't determine Java home, 'java.home' property does not exist");
             return null;
         }
+
+        val jdkVersion = try {
+            System.getProperty("java.specification.version") ?.toInt()
+        }
+        catch (e:NumberFormatException){
+            // we got 1.8 or 1.6
+            null
+        } ?:0
+        if (jdkVersion >= 9) return null
+
         File javaHome = new File(javaHomePath);
         File toolsJar = new File(javaHome, "lib/tools.jar");
         if (toolsJar.exists()) {
@@ -324,7 +337,8 @@ public class KaptJVMCompilerMojo extends K2JVMCompileMojo {
 
             oos.flush();
             return Base64.getEncoder().encodeToString(os.toByteArray());
-        } catch (IOException e) {
+        }
+        catch (IOException e) {
             // Should not occur
             throw new RuntimeException(e);
         }