From 10cedd495dd4f11d7ef4f13d9c3f44df1b01e93b Mon Sep 17 00:00:00 2001
From: "Alexander.Likhachev" <Alexander.Likhachev@jetbrains.com>
Date: Mon, 22 Jan 2024 17:36:08 +0100
Subject: [PATCH] [BTA] Add Kotlin version getter into `CompilationService`

^KT-62921 In Progress
---
 .../kotlin-build-tools-api/api/kotlin-build-tools-api.api | 1 +
 .../jetbrains/kotlin/buildtools/api/CompilationService.kt | 8 +++++++-
 .../kotlin/buildtools/internal/CompilationServiceImpl.kt  | 3 +++
 3 files changed, 11 insertions(+), 1 deletion(-)

diff --git a/compiler/build-tools/kotlin-build-tools-api/api/kotlin-build-tools-api.api b/compiler/build-tools/kotlin-build-tools-api/api/kotlin-build-tools-api.api
index 93b058004c7..e5656f8f53f 100644
--- a/compiler/build-tools/kotlin-build-tools-api/api/kotlin-build-tools-api.api
+++ b/compiler/build-tools/kotlin-build-tools-api/api/kotlin-build-tools-api.api
@@ -12,6 +12,7 @@ public abstract interface class org/jetbrains/kotlin/buildtools/api/CompilationS
 	public abstract fun calculateClasspathSnapshot (Ljava/io/File;Lorg/jetbrains/kotlin/buildtools/api/jvm/ClassSnapshotGranularity;)Lorg/jetbrains/kotlin/buildtools/api/jvm/ClasspathEntrySnapshot;
 	public abstract fun compileJvm (Lorg/jetbrains/kotlin/buildtools/api/ProjectId;Lorg/jetbrains/kotlin/buildtools/api/CompilerExecutionStrategyConfiguration;Lorg/jetbrains/kotlin/buildtools/api/jvm/JvmCompilationConfiguration;Ljava/util/List;Ljava/util/List;)Lorg/jetbrains/kotlin/buildtools/api/CompilationResult;
 	public abstract fun finishProjectCompilation (Lorg/jetbrains/kotlin/buildtools/api/ProjectId;)V
+	public abstract fun getCompilerVersion ()Ljava/lang/String;
 	public abstract fun getCustomKotlinScriptFilenameExtensions (Ljava/util/List;)Ljava/util/Collection;
 	public static fun loadImplementation (Ljava/lang/ClassLoader;)Lorg/jetbrains/kotlin/buildtools/api/CompilationService;
 	public abstract fun makeCompilerExecutionStrategyConfiguration ()Lorg/jetbrains/kotlin/buildtools/api/CompilerExecutionStrategyConfiguration;
diff --git a/compiler/build-tools/kotlin-build-tools-api/src/main/kotlin/org/jetbrains/kotlin/buildtools/api/CompilationService.kt b/compiler/build-tools/kotlin-build-tools-api/src/main/kotlin/org/jetbrains/kotlin/buildtools/api/CompilationService.kt
index 9238b92d571..6ca1d22cf12 100644
--- a/compiler/build-tools/kotlin-build-tools-api/src/main/kotlin/org/jetbrains/kotlin/buildtools/api/CompilationService.kt
+++ b/compiler/build-tools/kotlin-build-tools-api/src/main/kotlin/org/jetbrains/kotlin/buildtools/api/CompilationService.kt
@@ -9,7 +9,6 @@ import org.jetbrains.kotlin.buildtools.api.jvm.ClassSnapshotGranularity
 import org.jetbrains.kotlin.buildtools.api.jvm.ClasspathEntrySnapshot
 import org.jetbrains.kotlin.buildtools.api.jvm.JvmCompilationConfiguration
 import java.io.File
-import java.util.*
 
 /**
  * A facade for invoking compilation and related stuff (such as [calculateClasspathSnapshot]) in Kotlin compiler.
@@ -78,6 +77,13 @@ public interface CompilationService {
      */
     public fun getCustomKotlinScriptFilenameExtensions(classpath: List<File>): Collection<String>
 
+    /**
+     * Returns the version of the Kotlin compiler used to run compilation.
+     *
+     * @return A string representing the version of the Kotlin compiler, for example `2.0.0-Beta4`.
+     */
+    public fun getCompilerVersion(): String
+
     @ExperimentalBuildToolsApi
     public companion object {
         @JvmStatic
diff --git a/compiler/build-tools/kotlin-build-tools-impl/src/main/kotlin/org/jetbrains/kotlin/buildtools/internal/CompilationServiceImpl.kt b/compiler/build-tools/kotlin-build-tools-impl/src/main/kotlin/org/jetbrains/kotlin/buildtools/internal/CompilationServiceImpl.kt
index 9d390303e1c..93c93d83e83 100644
--- a/compiler/build-tools/kotlin-build-tools-impl/src/main/kotlin/org/jetbrains/kotlin/buildtools/internal/CompilationServiceImpl.kt
+++ b/compiler/build-tools/kotlin-build-tools-impl/src/main/kotlin/org/jetbrains/kotlin/buildtools/internal/CompilationServiceImpl.kt
@@ -24,6 +24,7 @@ import org.jetbrains.kotlin.cli.jvm.K2JVMCompiler
 import org.jetbrains.kotlin.cli.jvm.compiler.KotlinCoreEnvironment
 import org.jetbrains.kotlin.cli.jvm.modules.CoreJrtFileSystem
 import org.jetbrains.kotlin.compilerRunner.KotlinCompilerRunnerUtils
+import org.jetbrains.kotlin.config.KotlinCompilerVersion
 import org.jetbrains.kotlin.config.Services
 import org.jetbrains.kotlin.daemon.client.BasicCompilerServicesWithResultsFacadeServer
 import org.jetbrains.kotlin.daemon.common.CompilerId
@@ -230,6 +231,8 @@ internal object CompilationServiceImpl : CompilationService {
             ExitCode.COMPILATION_ERROR
         }).asCompilationResult
     }
+
+    override fun getCompilerVersion(): String = KotlinCompilerVersion.VERSION
 }
 
 internal class CompilationServiceProxy : CompilationService by CompilationServiceImpl
\ No newline at end of file