Configure Java module path when compiler is invoked in -Xbuild-file mode

#KT-27626 Fixed

compiler/cli/src/org/jetbrains/kotlin/cli/jvm/K2JVMCompiler.kt

@@ -94,17 +94,15 @@ class K2JVMCompiler : CLICompiler<K2JVMCompilerArguments>() {
 
         configuration.put(CommonConfigurationKeys.MODULE_NAME, arguments.moduleName ?: JvmAbi.DEFAULT_MODULE_NAME)
 
-        if (arguments.buildFile == null) {
-            configureContentRoots(paths, arguments, configuration)
+        configureContentRoots(paths, arguments, configuration)
 
-            if (arguments.freeArgs.isEmpty() && !arguments.version) {
-                if (arguments.script) {
-                    messageCollector.report(ERROR, "Specify script source path to evaluate")
-                    return COMPILATION_ERROR
-                }
-                ReplFromTerminal.run(rootDisposable, configuration)
-                return ExitCode.OK
+        if (arguments.buildFile == null && arguments.freeArgs.isEmpty() && !arguments.version) {
+            if (arguments.script) {
+                messageCollector.report(ERROR, "Specify script source path to evaluate")
+                return COMPILATION_ERROR
             }
+            ReplFromTerminal.run(rootDisposable, configuration)
+            return ExitCode.OK
         }
 
         if (arguments.includeRuntime) {
@@ -411,15 +409,20 @@ class K2JVMCompiler : CLICompiler<K2JVMCompilerArguments>() {
         }
 
         private fun configureContentRoots(paths: KotlinPaths?, arguments: K2JVMCompilerArguments, configuration: CompilerConfiguration) {
+            for (modularRoot in arguments.javaModulePath?.split(File.pathSeparatorChar).orEmpty()) {
+                configuration.add(CLIConfigurationKeys.CONTENT_ROOTS, JvmModulePathRoot(File(modularRoot)))
+            }
+
+            if (arguments.buildFile != null) {
+                // In the .xml compilation mode, all content roots except module path will be loaded from the .xml build file.
+                return
+            }
+
             val messageCollector = configuration.getNotNull(CLIConfigurationKeys.MESSAGE_COLLECTOR_KEY)
             for (path in arguments.classpath?.split(File.pathSeparatorChar).orEmpty()) {
                 configuration.add(CLIConfigurationKeys.CONTENT_ROOTS, JvmClasspathRoot(File(path)))
             }
 
-            for (modularRoot in arguments.javaModulePath?.split(File.pathSeparatorChar).orEmpty()) {
-                configuration.add(CLIConfigurationKeys.CONTENT_ROOTS, JvmModulePathRoot(File(modularRoot)))
-            }
-
             val isModularJava = configuration.get(JVMConfigurationKeys.JDK_HOME).let { it != null && CoreJrtFileSystem.isModularJdk(it) }
             fun addRoot(moduleName: String, libraryName: String, getLibrary: (KotlinPaths) -> File, noLibraryArgument: String) {
                 val file = getLibraryFromHome(paths, getLibrary, libraryName, messageCollector, noLibraryArgument) ?: return

compiler/testData/javaModules/withBuildFile/build.xml

@@ -0,0 +1,6 @@
+<modules>
+  <module name="app" type="java-production" outputDir="$TEMP_DIR$/app">
+    <sources path="$TESTDATA_DIR$/usage/usage.kt"/>
+    <javaSourceRoots path="$TESTDATA_DIR$/usage"/>
+  </module>
+</modules>

compiler/testData/javaModules/withBuildFile/usage.txt

@@ -0,0 +1,2 @@
+warning: the '-d' option with a directory destination is ignored because '-Xbuild-file' is specified
+OK

compiler/testData/javaModules/withBuildFile/usage/module-info.java

@@ -0,0 +1,3 @@
+module usage {
+    requires kotlin.stdlib;
+}

compiler/testData/javaModules/withBuildFile/usage/usage.kt

@@ -0,0 +1,3 @@
+class Test {
+    fun test() = KotlinVersion.CURRENT
+}

compiler/tests-common/tests/org/jetbrains/kotlin/cli/AbstractCliTest.java

@@ -204,7 +204,7 @@ public abstract class AbstractCliTest extends TestCaseWithTmpdir {
         String argWithTestPathsReplaced = replaceTestPaths(argWithColonsReplaced, testDataDir, tempDir);
 
         if (arg.startsWith(BUILD_FILE_ARGUMENT_PREFIX)) {
-            return createTempFileWithPathsReplaced(argWithTestPathsReplaced, BUILD_FILE_ARGUMENT_PREFIX, ".xml", testDataDir, tempDir);
+            return replacePathsInBuildXml(argWithTestPathsReplaced, testDataDir, tempDir);
         }
 
         if (arg.startsWith(ARGFILE_ARGUMENT)) {
@@ -214,6 +214,11 @@ public abstract class AbstractCliTest extends TestCaseWithTmpdir {
         return argWithTestPathsReplaced;
     }
 
+    @NotNull
+    public static String replacePathsInBuildXml(@NotNull String argument, @NotNull String testDataDir, @NotNull String tempDir) {
+        return createTempFileWithPathsReplaced(argument, BUILD_FILE_ARGUMENT_PREFIX, ".xml", testDataDir, tempDir);
+    }
+
     // Create new temporary file with all test paths replaced and return the new argument value with the new file path
     @NotNull
     private static String createTempFileWithPathsReplaced(

compiler/tests/org/jetbrains/kotlin/jvm/compiler/Java9ModulesIntegrationTest.kt

@@ -17,6 +17,7 @@
 package org.jetbrains.kotlin.jvm.compiler
 
 import com.intellij.openapi.util.io.FileUtil
+import org.jetbrains.kotlin.cli.AbstractCliTest
 import org.jetbrains.kotlin.codegen.forTestCompile.ForTestCompileRuntime
 import org.jetbrains.kotlin.test.KotlinTestUtils
 import java.io.File
@@ -30,6 +31,7 @@ class Java9ModulesIntegrationTest : AbstractKotlinCompilerIntegrationTest() {
             name: String,
             modulePath: List<File> = emptyList(),
             addModules: List<String> = emptyList(),
+            additionalKotlinArguments: List<String> = emptyList(),
             manifest: Manifest? = null
     ): File {
         val paths = (modulePath + ForTestCompileRuntime.runtimeJarForTests()).joinToString(separator = File.pathSeparator) { it.path }
@@ -42,6 +44,7 @@ class Java9ModulesIntegrationTest : AbstractKotlinCompilerIntegrationTest() {
         if (addModules.isNotEmpty()) {
             kotlinOptions += "-Xadd-modules=${addModules.joinToString()}"
         }
+        kotlinOptions += additionalKotlinArguments
 
         return compileLibrary(
                 name,
@@ -237,4 +240,15 @@ class Java9ModulesIntegrationTest : AbstractKotlinCompilerIntegrationTest() {
     fun testDependencyOnReflect() {
         module("usage", listOf(ForTestCompileRuntime.reflectJarForTests()))
     }
+
+    fun testWithBuildFile() {
+        // This test checks that module path is configured correctly when the compiler is invoked in the '-Xbuild-file' mode. Note that
+        // the "'-d' option is ignored" warning in this test is an artifact of the test infrastructure and is not a part of the test.
+        val buildFile = AbstractCliTest.replacePathsInBuildXml(
+            "-Xbuild-file=${File(testDataDirectory, "build.xml").path}",
+            testDataDirectory.absolutePath,
+            tmpdir.absolutePath
+        )
+        module("usage", additionalKotlinArguments = listOf("-no-stdlib", buildFile))
+    }
 }