Configuration: Support selection of "Latest stable" version vs specific one

#KT-21229 Fixed

compiler/cli/cli-common/src/org/jetbrains/kotlin/cli/common/arguments/CommonCompilerArguments.kt

@@ -16,6 +16,7 @@
 
 package org.jetbrains.kotlin.cli.common.arguments
 
+import com.intellij.util.xmlb.annotations.Transient
 import org.jetbrains.kotlin.cli.common.messages.MessageCollector
 import org.jetbrains.kotlin.config.AnalysisFlag
 import java.util.*
@@ -32,6 +33,9 @@ abstract class CommonCompilerArguments : CommonToolArguments() {
         const val ENABLE = "enable"
     }
 
+    @get:Transient
+    var autoAdvanceLanguageVersion: Boolean by FreezableVar(true)
+
     @GradleOption(DefaultValues.LanguageVersions::class)
     @Argument(
             value = "-language-version",
@@ -40,6 +44,9 @@ abstract class CommonCompilerArguments : CommonToolArguments() {
     )
     var languageVersion: String? by FreezableVar(null)
 
+    @get:Transient
+    var autoAdvanceApiVersion: Boolean by FreezableVar(true)
+
     @GradleOption(DefaultValues.LanguageVersions::class)
     @Argument(
             value = "-api-version",

idea/idea-analysis/src/org/jetbrains/kotlin/idea/compiler/configuration/KotlinCommonCompilerArgumentsHolder.kt

@@ -21,45 +21,37 @@ import com.intellij.openapi.project.Project
 import com.intellij.util.text.VersionComparatorUtil
 import org.jdom.Element
 import org.jetbrains.kotlin.cli.common.arguments.CommonCompilerArguments
-import org.jetbrains.kotlin.config.LanguageVersion
 import org.jetbrains.kotlin.config.SettingConstants.KOTLIN_COMMON_COMPILER_ARGUMENTS_SECTION
-import org.jetbrains.kotlin.config.getOption
+import org.jetbrains.kotlin.config.detectVersionAutoAdvance
+import org.jetbrains.kotlin.config.dropVersionsIfNecessary
 
 @State(name = KOTLIN_COMMON_COMPILER_ARGUMENTS_SECTION,
        storages = arrayOf(Storage(file = StoragePathMacros.PROJECT_FILE),
                           Storage(file = BaseKotlinCompilerSettings.KOTLIN_COMPILER_SETTINGS_PATH,
                                   scheme = StorageScheme.DIRECTORY_BASED)))
 class KotlinCommonCompilerArgumentsHolder(project: Project) : BaseKotlinCompilerSettings<CommonCompilerArguments>(project) {
-    private fun Element.dropElementIfDefault() {
-        if (DEFAULT_LANGUAGE_VERSION == getAttribute("value")?.value) {
-            detach()
-        }
-    }
-
     override fun getState(): Element {
         return super.getState().apply {
-            // Do not serialize language/api version if they correspond to the default language version
-            getOption("languageVersion")?.dropElementIfDefault()
-            getOption("apiVersion")?.dropElementIfDefault()
+            dropVersionsIfNecessary(settings)
         }
     }
 
     override fun loadState(state: Element) {
         super.loadState(state)
 
-        // To fix earlier configurations with incorrect combination of language and API version
         update {
+            // To fix earlier configurations with incorrect combination of language and API version
             if (VersionComparatorUtil.compare(languageVersion, apiVersion) < 0) {
                 apiVersion = languageVersion
             }
+
+            detectVersionAutoAdvance()
         }
     }
 
     override fun createSettings() = CommonCompilerArguments.DummyImpl()
 
     companion object {
-        private val DEFAULT_LANGUAGE_VERSION = LanguageVersion.LATEST_STABLE.versionString
-
         fun getInstance(project: Project) =
                 ServiceManager.getService<KotlinCommonCompilerArgumentsHolder>(project, KotlinCommonCompilerArgumentsHolder::class.java)!!
     }

idea/idea-jps-common/src/org/jetbrains/kotlin/config/KotlinFacetSettings.kt

@@ -70,6 +70,48 @@ object CoroutineSupport {
     }
 }
 
+sealed class VersionView : DescriptionAware {
+    abstract val version: LanguageVersion
+
+    object LatestStable : VersionView() {
+        override val version: LanguageVersion = LanguageVersion.LATEST_STABLE
+
+        override val description: String
+            get() = "Latest stable (${version.versionString})"
+    }
+
+    class Specific(override val version: LanguageVersion) : VersionView() {
+        override val description: String
+            get() = version.description
+
+        override fun equals(other: Any?) = other is Specific && version == other.version
+
+        override fun hashCode() = version.hashCode()
+    }
+
+    companion object {
+        fun deserialize(value: String?, isAutoAdvance: Boolean): VersionView {
+            if (isAutoAdvance) return VersionView.LatestStable
+            val languageVersion = LanguageVersion.fromVersionString(value)
+            return if (languageVersion != null) VersionView.Specific(languageVersion) else VersionView.LatestStable
+        }
+    }
+}
+
+var CommonCompilerArguments.languageVersionView: VersionView
+    get() = VersionView.deserialize(languageVersion, autoAdvanceLanguageVersion)
+    set(value) {
+        languageVersion = value.version.versionString
+        autoAdvanceLanguageVersion = value == VersionView.LatestStable
+    }
+
+var CommonCompilerArguments.apiVersionView: VersionView
+    get() = VersionView.deserialize(apiVersion, autoAdvanceApiVersion)
+    set(value) {
+        apiVersion = value.version.versionString
+        autoAdvanceApiVersion = value == VersionView.LatestStable
+    }
+
 class KotlinFacetSettings {
     companion object {
         // Increment this when making serialization-incompatible changes to configuration data

idea/idea-jps-common/src/org/jetbrains/kotlin/config/facetSerialization.kt

@@ -74,6 +74,8 @@ private fun readV1Config(element: Element): KotlinFacetSettings {
             compilerArguments.apiVersion = apiLevel
         }
 
+        compilerArguments.detectVersionAutoAdvance()
+
         if (useProjectSettings != null) {
             this.useProjectSettings = useProjectSettings
         }
@@ -106,6 +108,7 @@ private fun readV2AndLaterConfig(element: Element): KotlinFacetSettings {
         element.getChild("compilerArguments")?.let {
             compilerArguments = platformKind.createCompilerArguments { freeArgs = ArrayList() }
             XmlSerializer.deserializeInto(compilerArguments!!, it)
+            compilerArguments!!.detectVersionAutoAdvance()
         }
         testOutputPath = element.getChild("testOutputPath")?.let {
             PathUtil.toSystemDependentName((it.content.firstOrNull() as? Text)?.textTrim)
@@ -214,8 +217,8 @@ private fun Element.restoreNormalOrdering(bean: Any) {
             .forEachIndexed { index, element -> elementsToReorder[index] = element.clone() }
 }
 
-private fun buildChildElement(element: Element, tag: String, bean: Any, filter: SerializationFilter) {
-    Element(tag).apply {
+private fun buildChildElement(element: Element, tag: String, bean: Any, filter: SerializationFilter): Element {
+    return Element(tag).apply {
         XmlSerializer.serializeInto(bean, this, filter)
         restoreNormalOrdering(bean)
         element.addContent(this)
@@ -245,7 +248,24 @@ private fun KotlinFacetSettings.writeLatestConfig(element: Element) {
     }
     compilerArguments?.let { copyBean(it) }?.let {
         it.convertPathsToSystemIndependent()
-        buildChildElement(element, "compilerArguments", it, filter)
+        val compilerArgumentsXml = buildChildElement(element, "compilerArguments", it, filter)
+        compilerArgumentsXml.dropVersionsIfNecessary(it)
+    }
+}
+
+fun CommonCompilerArguments.detectVersionAutoAdvance() {
+    autoAdvanceLanguageVersion = languageVersion == null
+    autoAdvanceApiVersion = apiVersion == null
+}
+
+fun Element.dropVersionsIfNecessary(settings: CommonCompilerArguments) {
+    // Do not serialize language/api version if they correspond to the default language version
+    if (settings.autoAdvanceLanguageVersion) {
+        getOption("languageVersion")?.detach()
+    }
+
+    if (settings.autoAdvanceApiVersion) {
+        getOption("apiVersion")?.detach()
     }
 }
 

idea/src/org/jetbrains/kotlin/idea/compiler/configuration/KotlinCompilerConfigurableTab.java

@@ -58,10 +58,7 @@ import org.jetbrains.kotlin.idea.util.application.ApplicationUtilsKt;
 import javax.swing.*;
 import java.awt.event.ActionEvent;
 import java.awt.event.ActionListener;
-import java.util.Arrays;
-import java.util.LinkedHashMap;
-import java.util.List;
-import java.util.Map;
+import java.util.*;
 
 public class KotlinCompilerConfigurableTab implements SearchableConfigurable, Configurable.NoScroll{
     private static final Map<String, String> moduleKindDescriptions = new LinkedHashMap<>();
@@ -111,9 +108,9 @@ public class KotlinCompilerConfigurableTab implements SearchableConfigurable, Co
     private JPanel k2jvmPanel;
     private JPanel k2jsPanel;
     private JComboBox jvmVersionComboBox;
-    private JComboBox languageVersionComboBox;
+    private JComboBox<VersionView> languageVersionComboBox;
     private JComboBox coroutineSupportComboBox;
-    private JComboBox apiVersionComboBox;
+    private JComboBox<VersionView> apiVersionComboBox;
     private JPanel scriptPanel;
     private JLabel labelForOutputPrefixFile;
     private JLabel labelForOutputPostfixFile;
@@ -145,7 +142,7 @@ public class KotlinCompilerConfigurableTab implements SearchableConfigurable, Co
                     new ActionListener() {
                         @Override
                         public void actionPerformed(ActionEvent e) {
-                            restrictAPIVersions(getSelectedLanguageVersion());
+                            restrictAPIVersions(getSelectedLanguageVersionView().getVersion());
                         }
                     }
             );
@@ -295,15 +292,6 @@ public class KotlinCompilerConfigurableTab implements SearchableConfigurable, Co
         return jvmVersion != null ? jvmVersion : JvmTarget.DEFAULT.getDescription();
     }
 
-    private static LanguageVersion getLanguageVersionOrDefault(@Nullable String languageVersion) {
-        LanguageVersion version = LanguageVersion.fromVersionString(languageVersion);
-        return version != null ? version : LanguageVersion.LATEST_STABLE;
-    }
-
-    private static ApiVersion getApiVersionOrDefault(@Nullable String apiVersion) {
-        return apiVersion != null ? ApiVersion.Companion.parse(apiVersion) : ApiVersion.LATEST_STABLE;
-    }
-
     private static void setupFileChooser(
             @NotNull JLabel label,
             @NotNull TextFieldWithBrowseButton fileChooser,
@@ -328,15 +316,21 @@ public class KotlinCompilerConfigurableTab implements SearchableConfigurable, Co
         }
     }
 
+    private boolean isLessOrEqual(LanguageVersion version, LanguageVersion upperBound) {
+        return VersionComparatorUtil.compare(version.getVersionString(), upperBound.getVersionString()) <= 0;
+    }
+
     @SuppressWarnings("unchecked")
     public void restrictAPIVersions(LanguageVersion upperBound) {
-        ApiVersion selectedAPIVersion = getSelectedAPIVersion();
-        List<ApiVersion> permittedAPIVersions = ArraysKt.mapNotNull(
+        LanguageVersion selectedAPIVersion = getSelectedAPIVersionView().getVersion();
+        List<VersionView> permittedAPIVersions = new ArrayList<>(LanguageVersion.values().length + 1);
+        if (isLessOrEqual(VersionView.LatestStable.INSTANCE.getVersion(), upperBound)) {
+            permittedAPIVersions.add(VersionView.LatestStable.INSTANCE);
+        }
+        ArraysKt.mapNotNullTo(
                 LanguageVersion.values(),
-                version -> VersionComparatorUtil.compare(version.getVersionString(), upperBound.getVersionString()) <= 0 &&
-                           VersionComparatorUtil.compare(version.getVersionString(), upperBound.getVersionString()) <= 0
-                       ? ApiVersion.createByLanguageVersion(version)
-                       : null
+                permittedAPIVersions,
+                version -> isLessOrEqual(version, upperBound) ? new VersionView.Specific(version) : null
         );
         apiVersionComboBox.setModel(
                 new DefaultComboBoxModel(permittedAPIVersions.toArray())
@@ -357,13 +351,17 @@ public class KotlinCompilerConfigurableTab implements SearchableConfigurable, Co
 
     @SuppressWarnings("unchecked")
     private void fillLanguageAndAPIVersionList() {
+        languageVersionComboBox.addItem(VersionView.LatestStable.INSTANCE);
+        apiVersionComboBox.addItem(VersionView.LatestStable.INSTANCE);
+
         for (LanguageVersion version : LanguageVersion.values()) {
             if (!version.isStable() && !KotlinInternalMode.Instance.getEnabled()) {
                 continue;
             }
 
-            languageVersionComboBox.addItem(version);
-            apiVersionComboBox.addItem(ApiVersion.createByLanguageVersion(version));
+            VersionView.Specific specificVersion = new VersionView.Specific(version);
+            languageVersionComboBox.addItem(specificVersion);
+            apiVersionComboBox.addItem(specificVersion);
         }
         languageVersionComboBox.setRenderer(new DescriptionListCellRenderer());
         apiVersionComboBox.setRenderer(new DescriptionListCellRenderer());
@@ -429,8 +427,8 @@ public class KotlinCompilerConfigurableTab implements SearchableConfigurable, Co
     @Override
     public boolean isModified() {
         return ComparingUtils.isModified(reportWarningsCheckBox, !commonCompilerArguments.getSuppressWarnings()) ||
-               !getSelectedLanguageVersion().equals(getLanguageVersionOrDefault(commonCompilerArguments.getLanguageVersion())) ||
-               !getSelectedAPIVersion().equals(getApiVersionOrDefault(commonCompilerArguments.getApiVersion())) ||
+               !getSelectedLanguageVersionView().equals(KotlinFacetSettingsKt.getLanguageVersionView(commonCompilerArguments)) ||
+               !getSelectedAPIVersionView().equals(KotlinFacetSettingsKt.getApiVersionView(commonCompilerArguments)) ||
                !coroutineSupportComboBox.getSelectedItem().equals(CoroutineSupport.byCompilerArguments(commonCompilerArguments)) ||
                ComparingUtils.isModified(additionalArgsOptionsField, compilerSettings.getAdditionalArguments()) ||
                ComparingUtils.isModified(scriptTemplatesField, compilerSettings.getScriptTemplates()) ||
@@ -467,15 +465,15 @@ public class KotlinCompilerConfigurableTab implements SearchableConfigurable, Co
     }
 
     @NotNull
-    public LanguageVersion getSelectedLanguageVersion() {
+    public VersionView getSelectedLanguageVersionView() {
         Object item = languageVersionComboBox.getSelectedItem();
-        return item != null ? (LanguageVersion) item : LanguageVersion.LATEST_STABLE;
+        return item != null ? (VersionView) item : VersionView.LatestStable.INSTANCE;
     }
 
     @NotNull
-    private ApiVersion getSelectedAPIVersion() {
+    private VersionView getSelectedAPIVersionView() {
         Object item = apiVersionComboBox.getSelectedItem();
-        return item != null ? (ApiVersion) item : ApiVersion.LATEST_STABLE;
+        return item != null ? (VersionView) item : VersionView.LatestStable.INSTANCE;
     }
 
     public void applyTo(
@@ -486,8 +484,8 @@ public class KotlinCompilerConfigurableTab implements SearchableConfigurable, Co
     ) throws ConfigurationException {
         if (isProjectSettings) {
             boolean shouldInvalidateCaches =
-                    commonCompilerArguments.getLanguageVersion() != getSelectedLanguageVersion().getVersionString() ||
-                    commonCompilerArguments.getApiVersion() != getSelectedAPIVersion().getVersionString() ||
+                    !getSelectedLanguageVersionView().equals(KotlinFacetSettingsKt.getLanguageVersionView(commonCompilerArguments)) ||
+                    !getSelectedAPIVersionView().equals(KotlinFacetSettingsKt.getApiVersionView(commonCompilerArguments)) ||
                     !coroutineSupportComboBox.getSelectedItem().equals(CoroutineSupport.byCompilerArguments(commonCompilerArguments));
 
             if (shouldInvalidateCaches) {
@@ -504,8 +502,8 @@ public class KotlinCompilerConfigurableTab implements SearchableConfigurable, Co
         }
 
         commonCompilerArguments.setSuppressWarnings(!reportWarningsCheckBox.isSelected());
-        commonCompilerArguments.setLanguageVersion(getSelectedLanguageVersion().getVersionString());
-        commonCompilerArguments.setApiVersion(getSelectedAPIVersion().getVersionString());
+        KotlinFacetSettingsKt.setLanguageVersionView(commonCompilerArguments, getSelectedLanguageVersionView());
+        KotlinFacetSettingsKt.setApiVersionView(commonCompilerArguments, getSelectedAPIVersionView());
 
         switch ((LanguageFeature.State) coroutineSupportComboBox.getSelectedItem()) {
             case ENABLED:
@@ -564,9 +562,9 @@ public class KotlinCompilerConfigurableTab implements SearchableConfigurable, Co
     @Override
     public void reset() {
         reportWarningsCheckBox.setSelected(!commonCompilerArguments.getSuppressWarnings());
-        languageVersionComboBox.setSelectedItem(getLanguageVersionOrDefault(commonCompilerArguments.getLanguageVersion()));
-        apiVersionComboBox.setSelectedItem(getApiVersionOrDefault(commonCompilerArguments.getApiVersion()));
-        restrictAPIVersions(getSelectedLanguageVersion());
+        languageVersionComboBox.setSelectedItem(KotlinFacetSettingsKt.getLanguageVersionView(commonCompilerArguments));
+        restrictAPIVersions(getSelectedLanguageVersionView().getVersion());
+        apiVersionComboBox.setSelectedItem(KotlinFacetSettingsKt.getApiVersionView(commonCompilerArguments));
         coroutineSupportComboBox.setSelectedItem(CoroutineSupport.byCompilerArguments(commonCompilerArguments));
         additionalArgsOptionsField.setText(compilerSettings.getAdditionalArguments());
         scriptTemplatesField.setText(compilerSettings.getScriptTemplates());

idea/src/org/jetbrains/kotlin/idea/configuration/KotlinWithLibraryConfigurator.kt

@@ -29,11 +29,9 @@ import com.intellij.openapi.vfs.VfsUtil
 import com.intellij.openapi.vfs.VfsUtilCore
 import com.intellij.psi.PsiElement
 import org.jetbrains.annotations.Contract
-import org.jetbrains.kotlin.config.ApiVersion
-import org.jetbrains.kotlin.config.KotlinFacetSettingsProvider
-import org.jetbrains.kotlin.config.LanguageFeature
-import org.jetbrains.kotlin.config.LanguageVersion
+import org.jetbrains.kotlin.config.*
 import org.jetbrains.kotlin.idea.KotlinPluginUtil
+import org.jetbrains.kotlin.idea.compiler.configuration.KotlinCommonCompilerArgumentsHolder
 import org.jetbrains.kotlin.idea.facet.getRuntimeLibraryVersion
 import org.jetbrains.kotlin.idea.framework.ui.CreateLibraryDialogWithModules
 import org.jetbrains.kotlin.idea.framework.ui.FileUIUtils
@@ -112,6 +110,11 @@ abstract class KotlinWithLibraryConfigurator internal constructor() : KotlinProj
 
         configureKotlinSettings(modulesToConfigure)
 
+        KotlinCommonCompilerArgumentsHolder.getInstance(project).update {
+            languageVersionView = VersionView.Specific(LanguageVersion.LATEST_STABLE)
+            apiVersionView = VersionView.Specific(LanguageVersion.LATEST_STABLE)
+        }
+
         collector.showNotification()
     }
 

idea/src/org/jetbrains/kotlin/idea/facet/KotlinFacetEditorGeneralTab.kt

@@ -244,7 +244,7 @@ class KotlinFacetEditorGeneralTab(
 
     private fun restrictAPIVersions() {
         with(editor.compilerConfigurable) {
-            restrictAPIVersions(selectedLanguageVersion)
+            restrictAPIVersions(selectedLanguageVersionView.version)
         }
     }
 

idea/src/org/jetbrains/kotlin/idea/framework/CustomLibraryDescriptorWithDeferredConfig.kt

@@ -31,6 +31,11 @@ import com.intellij.openapi.roots.ui.configuration.libraryEditor.LibraryEditor
 import com.intellij.openapi.util.io.FileUtil
 import com.intellij.openapi.vfs.VfsUtil
 import com.intellij.openapi.vfs.VirtualFile
+import org.jetbrains.kotlin.config.LanguageVersion
+import org.jetbrains.kotlin.config.VersionView
+import org.jetbrains.kotlin.config.apiVersionView
+import org.jetbrains.kotlin.config.languageVersionView
+import org.jetbrains.kotlin.idea.compiler.configuration.KotlinCommonCompilerArgumentsHolder
 import org.jetbrains.kotlin.idea.configuration.KotlinWithLibraryConfigurator
 import org.jetbrains.kotlin.idea.configuration.KotlinWithLibraryConfigurator.FileState.COPY
 import org.jetbrains.kotlin.idea.configuration.KotlinWithLibraryConfigurator.FileState.DO_NOT_COPY
@@ -96,6 +101,11 @@ abstract class CustomLibraryDescriptorWithDeferredConfig
 
             configureKotlinSettings(module.project, rootModel.sdk)
 
+            KotlinCommonCompilerArgumentsHolder.getInstance(module.project).update {
+                languageVersionView = VersionView.Specific(LanguageVersion.LATEST_STABLE)
+                apiVersionView = VersionView.Specific(LanguageVersion.LATEST_STABLE)
+            }
+
             collector.showNotification()
         }
         finally {

idea/testData/configuration/dropKotlincOnVersionAutoAdvance/.idea/kotlinc.xml

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+    <component name="KotlinCommonCompilerArguments">
+        <option name="apiVersion" value="1.2" />
+        <option name="languageVersion" value="1.2" />
+    </component>
+</project>

idea/testData/configuration/noKotlincExistsNoSettingsLatestRuntime/.idea/compiler.xml

@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+    <component name="CompilerConfiguration">
+        <resourceExtensions />
+        <wildcardResourcePatterns>
+            <entry name="!?*.java" />
+            <entry name="!?*.form" />
+            <entry name="!?*.class" />
+            <entry name="!?*.groovy" />
+            <entry name="!?*.scala" />
+            <entry name="!?*.flex" />
+            <entry name="!?*.kt" />
+            <entry name="!?*.clj" />
+            <entry name="!?*.aj" />
+        </wildcardResourcePatterns>
+        <annotationProcessing>
+            <profile default="true" name="Default" enabled="false">
+                <processorPath useClasspath="true" />
+            </profile>
+        </annotationProcessing>
+    </component>
+</project>

idea/testData/configuration/noKotlincExistsNoSettingsLatestRuntime/.idea/copyright/profiles_settings.xml

@@ -0,0 +1,3 @@
+<component name="CopyrightManager">
+  <settings default="" />
+</component>

idea/testData/configuration/noKotlincExistsNoSettingsLatestRuntime/.idea/libraries/KotlinJavaRuntime.xml

@@ -0,0 +1,10 @@
+<component name="libraryTable">
+    <library name="KotlinJavaRuntime">
+        <CLASSES>
+            <root url="jar://$PROJECT_DIR$/lib/kotlin-runtime.jar!/" />
+        </CLASSES>
+        <JAVADOC />
+        <SOURCES>
+        </SOURCES>
+    </library>
+</component>

idea/testData/configuration/noKotlincExistsNoSettingsLatestRuntime/.idea/misc.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_1_8" default="true" assert-keyword="true" jdk-15="true" project-jdk-name="1.8" project-jdk-type="JavaSDK">
+    <output url="file://$PROJECT_DIR$/out" />
+  </component>
+</project>

idea/testData/configuration/noKotlincExistsNoSettingsLatestRuntime/.idea/modules.xml

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+    <component name="ProjectModuleManager">
+        <modules>
+            <module fileurl="file://$PROJECT_DIR$/module.iml" filepath="$PROJECT_DIR$/module.iml" />
+        </modules>
+    </component>
+</project>

idea/testData/configuration/noKotlincExistsNoSettingsLatestRuntime/module.iml

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="JAVA_MODULE" version="4">
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
+    </content>
+    <orderEntry type="sourceFolder" forTests="false" />
+    <orderEntry type="library" name="KotlinJavaRuntime" level="project" />
+  </component>
+</module>

idea/testData/configuration/noKotlincExistsNoSettingsRuntime10/.idea/compiler.xml

@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+    <component name="CompilerConfiguration">
+        <resourceExtensions />
+        <wildcardResourcePatterns>
+            <entry name="!?*.java" />
+            <entry name="!?*.form" />
+            <entry name="!?*.class" />
+            <entry name="!?*.groovy" />
+            <entry name="!?*.scala" />
+            <entry name="!?*.flex" />
+            <entry name="!?*.kt" />
+            <entry name="!?*.clj" />
+            <entry name="!?*.aj" />
+        </wildcardResourcePatterns>
+        <annotationProcessing>
+            <profile default="true" name="Default" enabled="false">
+                <processorPath useClasspath="true" />
+            </profile>
+        </annotationProcessing>
+    </component>
+</project>

idea/testData/configuration/noKotlincExistsNoSettingsRuntime10/.idea/copyright/profiles_settings.xml

@@ -0,0 +1,3 @@
+<component name="CopyrightManager">
+  <settings default="" />
+</component>

idea/testData/configuration/noKotlincExistsNoSettingsRuntime10/.idea/libraries/KotlinJavaRuntime.xml

@@ -0,0 +1,10 @@
+<component name="libraryTable">
+    <library name="KotlinJavaRuntime">
+        <CLASSES>
+            <root url="jar://$PROJECT_DIR$/lib/kotlin-runtime.jar!/" />
+        </CLASSES>
+        <JAVADOC />
+        <SOURCES>
+        </SOURCES>
+    </library>
+</component>

idea/testData/configuration/noKotlincExistsNoSettingsRuntime10/.idea/misc.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_1_8" default="true" assert-keyword="true" jdk-15="true" project-jdk-name="1.8" project-jdk-type="JavaSDK">
+    <output url="file://$PROJECT_DIR$/out" />
+  </component>
+</project>

idea/testData/configuration/noKotlincExistsNoSettingsRuntime10/.idea/modules.xml

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+    <component name="ProjectModuleManager">
+        <modules>
+            <module fileurl="file://$PROJECT_DIR$/module.iml" filepath="$PROJECT_DIR$/module.iml" />
+        </modules>
+    </component>
+</project>

idea/testData/configuration/noKotlincExistsNoSettingsRuntime10/module.iml

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="JAVA_MODULE" version="4">
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
+    </content>
+    <orderEntry type="sourceFolder" forTests="false" />
+    <orderEntry type="library" name="KotlinJavaRuntime" level="project" />
+  </component>
+</module>

idea/tests/org/jetbrains/kotlin/idea/configuration/ConfigureKotlinInTempDirTest.kt

@@ -48,16 +48,16 @@ class ConfigureKotlinInTempDirTest : AbstractConfigureKotlinTest() {
     }
 
     @Throws(IOException::class)
-    fun testKotlincExistsNoSettingsRuntime10() {
+    fun testNoKotlincExistsNoSettingsRuntime10() {
         val application = ApplicationManager.getApplication() as ApplicationImpl
         application.doNotSave(false)
         Assert.assertEquals(LanguageVersion.KOTLIN_1_0, module.languageVersionSettings.languageVersion)
         Assert.assertEquals(LanguageVersion.KOTLIN_1_0, myProject.getLanguageVersionSettings(null).languageVersion)
         application.saveAll()
-        Assert.assertTrue(project.baseDir.findFileByRelativePath(".idea/kotlinc.xml") != null)
+        Assert.assertTrue(project.baseDir.findFileByRelativePath(".idea/kotlinc.xml") == null)
     }
 
-    fun testKotlincExistsNoSettingsLatestRuntime() {
+    fun testNoKotlincExistsNoSettingsLatestRuntime() {
         val application = ApplicationManager.getApplication() as ApplicationImpl
         application.doNotSave(false)
         Assert.assertEquals(LanguageVersion.LATEST_STABLE, module.languageVersionSettings.languageVersion)
@@ -66,6 +66,31 @@ class ConfigureKotlinInTempDirTest : AbstractConfigureKotlinTest() {
         Assert.assertTrue(project.baseDir.findFileByRelativePath(".idea/kotlinc.xml") == null)
     }
 
+    fun testKotlincExistsNoSettingsLatestRuntimeNoVersionAutoAdvance() {
+        val application = ApplicationManager.getApplication() as ApplicationImpl
+        application.doNotSave(false)
+        Assert.assertEquals(LanguageVersion.LATEST_STABLE, module.languageVersionSettings.languageVersion)
+        Assert.assertEquals(LanguageVersion.LATEST_STABLE, myProject.getLanguageVersionSettings(null).languageVersion)
+        KotlinCommonCompilerArgumentsHolder.getInstance(project).update {
+            autoAdvanceLanguageVersion = false
+            autoAdvanceApiVersion = false
+        }
+        application.saveAll()
+        Assert.assertTrue(project.baseDir.findFileByRelativePath(".idea/kotlinc.xml") != null)
+    }
+
+    fun testDropKotlincOnVersionAutoAdvance() {
+        val application = ApplicationManager.getApplication() as ApplicationImpl
+        application.doNotSave(false)
+        Assert.assertEquals(LanguageVersion.LATEST_STABLE, module.languageVersionSettings.languageVersion)
+        KotlinCommonCompilerArgumentsHolder.getInstance(project).update {
+            autoAdvanceLanguageVersion = true
+            autoAdvanceApiVersion = true
+        }
+        application.saveAll()
+        Assert.assertTrue(project.baseDir.findFileByRelativePath(".idea/kotlinc.xml") == null)
+    }
+
     fun testProject106InconsistentVersionInConfig() {
         val settings = KotlinFacetSettingsProvider.getInstance(myProject).getInitializedSettings(module)
         Assert.assertEquals(false, settings.useProjectSettings)