Redirect warning output to error log when allWarningsAsErrors is enabled

Issue #KT-35447 Fixed

libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/compilerRunner/GradleKotlinCompilerRunner.kt

@@ -137,7 +137,8 @@ internal open class GradleCompilerRunner(protected val task: Task) {
             outputFiles = environment.outputFiles.toList(),
             taskPath = task.path,
             buildReportMode = environment.buildReportMode,
-            kotlinScriptExtensions = environment.kotlinScriptExtensions
+            kotlinScriptExtensions = environment.kotlinScriptExtensions,
+            allWarningsAsErrors = compilerArgs.allWarningsAsErrors
         )
         TaskLoggers.put(task.path, task.logger)
         runCompilerAsync(workArgs)

libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/compilerRunner/GradleKotlinCompilerWork.kt

@@ -56,7 +56,8 @@ internal class GradleKotlinCompilerWorkArguments(
     val outputFiles: List<File>,
     val taskPath: String,
     val buildReportMode: BuildReportMode?,
-    val kotlinScriptExtensions: Array<String>
+    val kotlinScriptExtensions: Array<String>,
+    val allWarningsAsErrors: Boolean
 ) : Serializable {
     companion object {
         const val serialVersionUID: Long = 0
@@ -95,6 +96,7 @@ internal class GradleKotlinCompilerWork @Inject constructor(
     private val taskPath = config.taskPath
     private val buildReportMode = config.buildReportMode
     private val kotlinScriptExtensions = config.kotlinScriptExtensions
+    private val allWarningsAsErrors = config.allWarningsAsErrors
 
     private val log: KotlinLogger =
         TaskLoggers.get(taskPath)?.let { GradleKotlinLogger(it).apply { debug("Using '$taskPath' logger") } }
@@ -113,7 +115,7 @@ internal class GradleKotlinCompilerWork @Inject constructor(
         get() = incrementalCompilationEnvironment != null
 
     override fun run() {
-        val messageCollector = GradlePrintingMessageCollector(log)
+        val messageCollector = GradlePrintingMessageCollector(log, allWarningsAsErrors)
         val exitCode = compileWithDaemonOrFallbackImpl(messageCollector)
         if (incrementalCompilationEnvironment?.disableMultiModuleIC == true) {
             incrementalCompilationEnvironment.multiModuleICSettings.buildHistoryFile.delete()

libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/internal/kapt/KaptWithKotlincTask.kt

@@ -95,7 +95,7 @@ open class KaptWithKotlincTask : KaptTask(), CompilerArgumentAwareWithInput<K2JV
 
         val args = prepareCompilerArguments()
 
-        val messageCollector = GradlePrintingMessageCollector(GradleKotlinLogger(logger))
+        val messageCollector = GradlePrintingMessageCollector(GradleKotlinLogger(logger), args.allWarningsAsErrors)
         val outputItemCollector = OutputItemsCollectorImpl()
         val environment = GradleCompilerEnvironment(
             compilerClasspath, messageCollector, outputItemCollector,

libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/logging/GradlePrintingMessageCollector.kt

@@ -12,9 +12,12 @@ import org.jetbrains.kotlin.cli.common.messages.GradleStyleMessageRenderer
 import org.jetbrains.kotlin.cli.common.messages.MessageCollector
 import org.jetbrains.kotlin.compilerRunner.KotlinLogger
 
-internal class GradlePrintingMessageCollector(val logger: KotlinLogger) :
+internal class GradlePrintingMessageCollector(
+    val logger: KotlinLogger,
+    private val allWarningsAsErrors: Boolean
+) :
     MessageCollector {
-    constructor(logger: Logger) : this(GradleKotlinLogger(logger))
+    constructor(logger: Logger, allWarningsAsErrors: Boolean) : this(GradleKotlinLogger(logger), allWarningsAsErrors)
 
     private var hasErrors = false
 
@@ -38,7 +41,11 @@ internal class GradlePrintingMessageCollector(val logger: KotlinLogger) :
 
             CompilerMessageSeverity.WARNING,
             CompilerMessageSeverity.STRONG_WARNING -> {
-                logger.warn(renderedMessage)
+                if (allWarningsAsErrors) {
+                    logger.error(renderedMessage)
+                } else {
+                    logger.warn(renderedMessage)
+                }
             }
             CompilerMessageSeverity.INFO -> {
                 logger.info(renderedMessage)

libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/tasks/KotlinCompileCommon.kt

@@ -95,7 +95,7 @@ open class KotlinCompileCommon : AbstractKotlinCompile<K2MetadataCompilerArgumen
     }
 
     override fun callCompilerAsync(args: K2MetadataCompilerArguments, sourceRoots: SourceRoots, changedFiles: ChangedFiles) {
-        val messageCollector = GradlePrintingMessageCollector(logger)
+        val messageCollector = GradlePrintingMessageCollector(logger, args.allWarningsAsErrors)
         val outputItemCollector = OutputItemsCollectorImpl()
         val compilerRunner = compilerRunner()
         val environment = GradleCompilerEnvironment(

libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/tasks/Tasks.kt

@@ -401,7 +401,7 @@ open class KotlinCompile : AbstractKotlinCompile<K2JVMCompilerArguments>(), Kotl
     override fun callCompilerAsync(args: K2JVMCompilerArguments, sourceRoots: SourceRoots, changedFiles: ChangedFiles) {
         sourceRoots as SourceRoots.ForJvm
 
-        val messageCollector = GradlePrintingMessageCollector(logger)
+        val messageCollector = GradlePrintingMessageCollector(logger, args.allWarningsAsErrors)
         val outputItemCollector = OutputItemsCollectorImpl()
         val compilerRunner = compilerRunner()
 
@@ -622,7 +622,7 @@ open class Kotlin2JsCompile : AbstractKotlinCompile<K2JSCompilerArguments>(), Ko
 
         logger.kotlinDebug("compiling with args ${ArgumentUtils.convertArgumentsToStringList(args)}")
 
-        val messageCollector = GradlePrintingMessageCollector(logger)
+        val messageCollector = GradlePrintingMessageCollector(logger, args.allWarningsAsErrors)
         val outputItemCollector = OutputItemsCollectorImpl()
         val compilerRunner = compilerRunner()