Support progressive mode via "-progressive"

#KT-25862 Fixed

build.gradle.kts

@@ -273,7 +273,7 @@ allprojects {
     val commonCompilerArgs = listOfNotNull(
         "-Xallow-kotlin-package",
         "-Xread-deserialized-contracts",
-        "-Xprogressive".takeIf { hasProperty("test.progressive.mode") },
+        "-Xprogressive".takeIf { hasProperty("test.progressive.mode") }, // TODO: change to "-progressive" after bootstrap
         "-XXLanguage:-ReleaseCoroutines"
     )
 

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

@@ -65,6 +65,17 @@ abstract class CommonCompilerArguments : CommonToolArguments() {
     )
     var kotlinHome: String? by NullableStringFreezableVar(null)
 
+    @Argument(
+        value = "-progressive",
+        deprecatedName = "-Xprogressive",
+        description = "Enable progressive compiler mode.\n" +
+                "In this mode, deprecations and bug fixes for unstable code take effect immediately,\n" +
+                "instead of going through a graceful migration cycle.\n" +
+                "Code written in the progressive mode is backward compatible; however, code written in\n" +
+                "non-progressive mode may cause compilation errors in the progressive mode."
+    )
+    var progressiveMode by FreezableVar(false)
+
     @Argument(value = "-P", valueDescription = PLUGIN_OPTION_FORMAT, description = "Pass an option to a plugin")
     var pluginOptions: Array<String>? by FreezableVar(null)
 
@@ -165,16 +176,6 @@ abstract class CommonCompilerArguments : CommonToolArguments() {
     )
     var dumpPerf: String? by NullableStringFreezableVar(null)
 
-    @Argument(
-        value = "-Xprogressive",
-        description = "Enable compiler progressive mode.\n" +
-                "In this mode, deprecations and bug fixes for unstable code take effect immediately,\n" +
-                "instead of going through graceful migration cycle.\n" +
-                "Code, written in progressive mode is backward compatible; however, code written in\n" +
-                "non-progressive mode may cause compilation errors in progressive mode."
-    )
-    var progressiveMode by FreezableVar(false)
-
     @Argument(
         value = "-Xmetadata-version",
         description = "Change metadata version of the generated binary files"
@@ -319,8 +320,10 @@ abstract class CommonCompilerArguments : CommonToolArguments() {
         if (progressiveMode && languageVersion < LanguageVersion.LATEST_STABLE) {
             collector.report(
                 CompilerMessageSeverity.STRONG_WARNING,
-                "'-Xprogressive' meaningful only for latest language version (${LanguageVersion.LATEST_STABLE}), while this build uses $languageVersion\n" +
-                        "Behaviour of compiler in such mode is undefined; please, consider moving to the latest stable version or turning off progressive mode."
+                "'-progressive' is meaningful only for the latest language version (${LanguageVersion.LATEST_STABLE}), " +
+                        "while this build uses $languageVersion\n" +
+                        "Compiler behavior in such mode is undefined; please, consider moving to the latest stable version " +
+                        "or turning off progressive mode."
             )
         }
 

compiler/testData/cli/js/jsExtraHelp.out

@@ -19,11 +19,6 @@ where advanced options include:
   -Xno-check-actual          Do not check presence of 'actual' modifier in multi-platform projects
   -Xno-inline                Disable method inlining
   -Xplugin=<path>            Load plugins from the given classpath
-  -Xprogressive              Enable compiler progressive mode.
-                             In this mode, deprecations and bug fixes for unstable code take effect immediately,
-                             instead of going through graceful migration cycle.
-                             Code, written in progressive mode is backward compatible; however, code written in
-                             non-progressive mode may cause compilation errors in progressive mode.
   -Xproper-ieee754-comparisons Generate proper IEEE 754 comparisons in all cases if values are statically known to be of primitive numeric types
   -Xread-deserialized-contracts Enable reading of contracts from metadata
   -Xreport-output-files      Report source to output files mapping

compiler/testData/cli/js/jsHelp.out

@@ -23,6 +23,11 @@ where possible options include:
   -language-version <version> Provide source compatibility with specified language version
   -P plugin:<pluginId>:<optionName>=<value>
                              Pass an option to a plugin
+  -progressive               Enable progressive compiler mode.
+                             In this mode, deprecations and bug fixes for unstable code take effect immediately,
+                             instead of going through a graceful migration cycle.
+                             Code written in the progressive mode is backward compatible; however, code written in
+                             non-progressive mode may cause compilation errors in the progressive mode.
   -nowarn                    Generate no warnings
   -verbose                   Enable verbose logging output
   -version                   Display compiler version

compiler/testData/cli/jvm/extraHelp.out

@@ -77,11 +77,6 @@ where advanced options include:
   -Xno-check-actual          Do not check presence of 'actual' modifier in multi-platform projects
   -Xno-inline                Disable method inlining
   -Xplugin=<path>            Load plugins from the given classpath
-  -Xprogressive              Enable compiler progressive mode.
-                             In this mode, deprecations and bug fixes for unstable code take effect immediately,
-                             instead of going through graceful migration cycle.
-                             Code, written in progressive mode is backward compatible; however, code written in
-                             non-progressive mode may cause compilation errors in progressive mode.
   -Xproper-ieee754-comparisons Generate proper IEEE 754 comparisons in all cases if values are statically known to be of primitive numeric types
   -Xread-deserialized-contracts Enable reading of contracts from metadata
   -Xreport-output-files      Report source to output files mapping

compiler/testData/cli/jvm/help.out

@@ -21,6 +21,11 @@ where possible options include:
   -language-version <version> Provide source compatibility with specified language version
   -P plugin:<pluginId>:<optionName>=<value>
                              Pass an option to a plugin
+  -progressive               Enable progressive compiler mode.
+                             In this mode, deprecations and bug fixes for unstable code take effect immediately,
+                             instead of going through a graceful migration cycle.
+                             Code written in the progressive mode is backward compatible; however, code written in
+                             non-progressive mode may cause compilation errors in the progressive mode.
   -nowarn                    Generate no warnings
   -verbose                   Enable verbose logging output
   -version                   Display compiler version

compiler/testData/cli/jvm/kt19628_progressive.args

@@ -1,2 +1,2 @@
 $TESTDATA_DIR$/kt19628_progressive.kt
--Xprogressive
+-progressive

compiler/testData/cli/jvm/progressiveModeOn.args

@@ -1,4 +1,4 @@
 $TESTDATA_DIR$/progressive
 -d
 $TEMP_DIR$
--Xprogressive
+-progressive

compiler/util/src/org/jetbrains/kotlin/config/LanguageVersionSettings.kt

@@ -138,7 +138,7 @@ enum class LanguageFeature(
      *
      *
      * # [enabledInProgressiveMode]
-     * If 'true', then this feature will be automatically enabled under '-Xprogressive' mode.
+     * If 'true', then this feature will be automatically enabled under '-progressive' mode.
      *
      * Restrictions for using this flag for particular feature follow from restrictions of the progressive mode:
      * - enabling it *must not* break compatibility with non-progressive compiler, i.e. code written under progressive

idea/idea-gradle/tests/org/jetbrains/kotlin/idea/codeInsight/gradle/GradleFacetImportTest.kt

@@ -1467,7 +1467,7 @@ compileTestKotlin {
 
             tasks.withType(org.jetbrains.kotlin.gradle.tasks.KotlinCompile).all {
                 kotlinOptions {
-                    freeCompilerArgs = ['-Xprogressive']
+                    freeCompilerArgs = ['-progressive']
                 }
             }
         """

libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/kotlin/org/jetbrains/kotlin/gradle/NewMultiplatformIT.kt

@@ -293,7 +293,7 @@ class NewMultiplatformIT : BaseGradleIT() {
 
         build("compileKotlinJvm6") {
             assertSuccessful()
-            assertContains("-language-version 1.3", "-api-version 1.3", "-XXLanguage:+InlineClasses", " -Xprogressive")
+            assertContains("-language-version 1.3", "-api-version 1.3", "-XXLanguage:+InlineClasses", " -progressive")
         }
     }
 

libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/plugin/sources/DefaultLanguageSettingsBuilder.kt

@@ -62,7 +62,7 @@ internal fun applyLanguageSettingsToKotlinTask(
     apiVersion = apiVersion ?: languageSettingsBuilder.apiVersion
 
     if (languageSettingsBuilder.progressiveMode) {
-        freeCompilerArgs += "-Xprogressive"
+        freeCompilerArgs += "-progressive"
     }
 
     languageSettingsBuilder.enabledLanguageFeatures.forEach { featureName ->