build scripts: allow products to specify several root module to build searchable index (because e.g. AppCode doesn't have single main module)

build/groovy/org/jetbrains/intellij/build/IdeaCommunityProperties.groovy

@@ -17,9 +17,6 @@ package org.jetbrains.intellij.build
 
 import groovy.transform.CompileDynamic
 import groovy.transform.CompileStatic
-import org.jetbrains.intellij.build.impl.PlatformLayout
-
-import java.util.function.Consumer
 
 /**
  * @author nik
@@ -41,7 +38,7 @@ class IdeaCommunityProperties extends BaseIdeaProperties {
                                                   ["jps-model-impl", "jps-model-serialization"]
     productLayout.additionalPlatformJars.put("resources.jar", "community-resources")
     productLayout.bundledPluginModules = BUNDLED_PLUGIN_MODULES
-    productLayout.mainModule = "community-main"
+    productLayout.mainModules = ["community-main"]
     productLayout.allNonTrivialPlugins = CommunityRepositoryModules.COMMUNITY_REPOSITORY_PLUGINS + [
       CommunityRepositoryModules.androidPlugin([:]),
       CommunityRepositoryModules.groovyPlugin([])

build/groovy/org/jetbrains/intellij/build/ProductModulesLayout.groovy

@@ -86,10 +86,12 @@ class ProductModulesLayout {
    * Additional customizations of platform JARs. <strong>This is a temporary property added to keep layout of some products.</strong>
    */
   Consumer<PlatformLayout> platformLayoutCustomizer = {} as Consumer<PlatformLayout>
+
   /**
-   * Name of the module which classpath will be used to build searchable options index
+   * Names of the modules which classpath will be used to build searchable options index <br>
+   * //todo[nik] get rid of this property and automatically include all platform and plugin modules to the classpath when building searchable options index
    */
-  String mainModule
+  List<String> mainModules = []
 
   /**
    * Name of the module containing search/searchableOptions.xml file.

build/groovy/org/jetbrains/intellij/build/impl/BuildTasksImpl.groovy

@@ -340,7 +340,7 @@ idea.fatal.error.notification=disabled
     checkModules(layout.platformApiModules, "productProperties.productLayout.platformApiModules")
     checkModules(layout.platformImplementationModules, "productProperties.productLayout.platformImplementationModules")
     checkModules(layout.additionalPlatformJars.values(), "productProperties.productLayout.additionalPlatformJars")
-    checkModules([layout.mainModule], "productProperties.productLayout.mainModule")
+    checkModules(layout.mainModules, "productProperties.productLayout.mainModules")
     checkProjectLibraries(layout.projectLibrariesToUnpackIntoMainJar, "productProperties.productLayout.projectLibrariesToUnpackIntoMainJar")
     nonTrivialPlugins.findAll {layout.enabledPluginModules.contains(it.mainModule)}.each { plugin ->
       checkModules(plugin.moduleJars.values(), "'$plugin.mainModule' plugin")

build/groovy/org/jetbrains/intellij/build/impl/DistributionJARsBuilder.groovy

@@ -131,7 +131,7 @@ class DistributionJARsBuilder {
   List<String> getPlatformModules() {
     (platform.moduleJars.values() as List<String>) +
     ["java-runtime", "platform-main", /*required to build searchable options index*/
-     "updater", buildContext.productProperties.productLayout.mainModule]
+     "updater"] + buildContext.productProperties.productLayout.mainModules
 
   }
 
@@ -200,7 +200,7 @@ class DistributionJARsBuilder {
 
     //todo[nik] move buildSearchableOptions and patchedApplicationInfo methods to this class
     def buildTasks = new BuildTasksImpl(buildContext)
-    buildTasks.buildSearchableOptions(searchableOptionsDir, [productLayout.mainModule], productLayout.licenseFilesToBuildSearchableOptions)
+    buildTasks.buildSearchableOptions(searchableOptionsDir, productLayout.mainModules, productLayout.licenseFilesToBuildSearchableOptions)
     if (!buildContext.options.buildStepsToSkip.contains(BuildOptions.SEARCHABLE_OPTIONS_INDEX_STEP)) {
       layoutBuilder.patchModuleOutput(productLayout.searchableOptionsModule, FileUtil.toSystemIndependentName(searchableOptionsDir.absolutePath))
     }

python/build/groovy/org/jetbrains/intellij/build/pycharm/PyCharmCommunityProperties.groovy

@@ -33,7 +33,7 @@ class PyCharmCommunityProperties extends PyCharmPropertiesBase {
       "python-ide-community", "python-community-configure", "python-openapi", "python-psi-api", "platform-main"
     ]
     productLayout.bundledPluginModules = new File("$communityHome/python/build/plugin-list.txt").readLines()
-    productLayout.mainModule = "main_pycharm_ce"
+    productLayout.mainModules = ["main_pycharm_ce"]
   }
 
   @Override

python/educational-python/build/groovy/org/jetbrains/intellij/build/pycharm/edu/PyCharmEduProperties.groovy

@@ -18,7 +18,7 @@ class PyCharmEduProperties extends PyCharmPropertiesBase {
     applicationInfoModule = "educational-python"
     brandingResourcePaths = ["$pythonCommunityPath/educational-python/resources"]
 
-    productLayout.mainModule = "main_pycharm_edu"
+    productLayout.mainModules = ["main_pycharm_edu"]
     productLayout.platformApiModules = CommunityRepositoryModules.PLATFORM_API_MODULES + ["dom-openapi"]
     productLayout.platformImplementationModules = CommunityRepositoryModules.PLATFORM_IMPLEMENTATION_MODULES + [
       "dom-impl", "python-community", "python-community-ide-resources",