[CLI] Report compilation error if compiler plugins are enabled alongside with K2 compiler

^KT-52037 Fixed

compiler/cli/src/org/jetbrains/kotlin/cli/common/CLICompiler.kt

@@ -41,6 +41,9 @@ import java.io.File
 import java.io.PrintStream
 
 abstract class CLICompiler<A : CommonCompilerArguments> : CLITool<A>() {
+    companion object {
+        const val SCRIPT_PLUGIN_REGISTRAR_NAME = "org.jetbrains.kotlin.scripting.compiler.plugin.ScriptingCompilerConfigurationComponentRegistrar"
+    }
 
     abstract val defaultPerformanceManager: CommonCompilerPerformanceManager
 
@@ -188,9 +191,7 @@ abstract class CLICompiler<A : CommonCompilerArguments> : CLITool<A>() {
     }
 
     private fun tryLoadScriptingPluginFromCurrentClassLoader(configuration: CompilerConfiguration): Boolean = try {
-        val pluginRegistrarClass = PluginCliParser::class.java.classLoader.loadClass(
+        val pluginRegistrarClass = PluginCliParser::class.java.classLoader.loadClass(SCRIPT_PLUGIN_REGISTRAR_NAME)
-            "org.jetbrains.kotlin.scripting.compiler.plugin.ScriptingCompilerConfigurationComponentRegistrar"
-        )
         val pluginRegistrar = pluginRegistrarClass.newInstance() as? ComponentRegistrar
         if (pluginRegistrar != null) {
             configuration.add(ComponentRegistrar.PLUGIN_COMPONENT_REGISTRARS, pluginRegistrar)

compiler/cli/src/org/jetbrains/kotlin/cli/jvm/compiler/FirKotlinToJvmBytecodeCompiler.kt

@@ -10,11 +10,13 @@ import org.jetbrains.kotlin.asJava.FilteredJvmDiagnostics
 import org.jetbrains.kotlin.backend.common.extensions.IrGenerationExtension
 import org.jetbrains.kotlin.backend.jvm.JvmGeneratorExtensionsImpl
 import org.jetbrains.kotlin.backend.jvm.JvmIrCodegenFactory
+import org.jetbrains.kotlin.cli.common.CLICompiler
 import org.jetbrains.kotlin.cli.common.CLIConfigurationKeys
 import org.jetbrains.kotlin.cli.common.CommonCompilerPerformanceManager
 import org.jetbrains.kotlin.cli.common.checkKotlinPackageUsage
 import org.jetbrains.kotlin.cli.common.fir.FirDiagnosticsCompilerResultsReporter
 import org.jetbrains.kotlin.cli.common.messages.AnalyzerWithCompilerReport
+import org.jetbrains.kotlin.cli.common.messages.CompilerMessageSeverity
 import org.jetbrains.kotlin.cli.common.messages.CompilerMessageSeverity.STRONG_WARNING
 import org.jetbrains.kotlin.cli.common.messages.MessageCollector
 import org.jetbrains.kotlin.cli.jvm.config.jvmClasspathRoots
@@ -22,6 +24,7 @@ import org.jetbrains.kotlin.cli.jvm.config.jvmModularRoots
 import org.jetbrains.kotlin.codegen.ClassBuilderFactories
 import org.jetbrains.kotlin.codegen.CodegenFactory
 import org.jetbrains.kotlin.codegen.state.GenerationState
+import org.jetbrains.kotlin.compiler.plugin.ComponentRegistrar
 import org.jetbrains.kotlin.config.*
 import org.jetbrains.kotlin.diagnostics.DiagnosticReporterFactory
 import org.jetbrains.kotlin.diagnostics.impl.BaseDiagnosticsCollector
@@ -82,6 +85,19 @@ object FirKotlinToJvmBytecodeCompiler {
             "ATTENTION!\n This build uses in-dev FIR: \n  -Xuse-fir"
         )
 
+        projectConfiguration.get(ComponentRegistrar.PLUGIN_COMPONENT_REGISTRARS)?.let { pluginComponentRegistrars ->
+            val nonScriptPlugins = pluginComponentRegistrars.filter {
+                it::class.java.canonicalName != CLICompiler.SCRIPT_PLUGIN_REGISTRAR_NAME
+            }
+            if (nonScriptPlugins.isNotEmpty()) {
+                messageCollector.report(
+                    CompilerMessageSeverity.ERROR,
+                    "Compiler plugins are enabled with K2 compiler.\n K2 does not support plugins yet, so please remove -Xuse-k2 flag"
+                )
+                return false
+            }
+        }
+
         val outputs = ArrayList<Pair<FirResult, GenerationState>>(chunk.size)
         val targetIds = projectConfiguration.get(JVMConfigurationKeys.MODULES)?.map(::TargetId)
         val incrementalComponents = projectConfiguration.get(JVMConfigurationKeys.INCREMENTAL_COMPILATION_COMPONENTS)

compiler/testData/cli/jvm/pluginWithK2Error.args

@@ -0,0 +1,10 @@
+-d
+$TEMP_DIR$
+-Xplugin=dist/kotlinc/lib/android-extensions-compiler.jar
+-P
+plugin\:org.jetbrains.kotlin.android\:package=com.myapp
+-P
+plugin\:org.jetbrains.kotlin.android\:variant=main;$TESTDATA_DIR$/androidPlugin/res
+$TESTDATA_DIR$/pluginSimple.kt
+$TESTDATA_DIR$/androidPlugin
+-Xuse-fir

compiler/testData/cli/jvm/pluginWithK2Error.kt

@@ -0,0 +1,8 @@
+import android.view.*
+import android.app.*
+import android.widget.*
+import kotlinx.android.synthetic.main.layout.*
+
+class MyActivity : Activity() {
+    init { textView.setText("Some text") }
+}

compiler/testData/cli/jvm/pluginWithK2Error.out

@@ -0,0 +1,6 @@
+warning: ATTENTION!
+ This build uses in-dev FIR:
+  -Xuse-fir
+error: compiler plugins are enabled with K2 compiler.
+ K2 does not support plugins yet, so please remove -Xuse-k2 flag
+COMPILATION_ERROR

compiler/tests-gen/org/jetbrains/kotlin/cli/CliTestGenerated.java

@@ -844,6 +844,11 @@ public class CliTestGenerated extends AbstractCliTest {
             runTest("compiler/testData/cli/jvm/pluginSimple.args");
         }
 
+        @TestMetadata("pluginWithK2Error.args")
+        public void testPluginWithK2Error() throws Exception {
+            runTest("compiler/testData/cli/jvm/pluginWithK2Error.args");
+        }
+
         @TestMetadata("progressiveModeOff.args")
         public void testProgressiveModeOff() throws Exception {
             runTest("compiler/testData/cli/jvm/progressiveModeOff.args");