AA: add JDK_HOME as dependent SDK module

analysis/analysis-api-impl-base/src/org/jetbrains/kotlin/analysis/api/impl/base/util/LibraryUtils.kt

@@ -6,6 +6,7 @@
 package org.jetbrains.kotlin.analysis.api.impl.base.util
 
 import com.intellij.openapi.project.Project
+import com.intellij.openapi.util.text.StringUtil
 import com.intellij.openapi.vfs.StandardFileSystems
 import com.intellij.openapi.vfs.VfsUtilCore
 import com.intellij.openapi.vfs.VirtualFile
@@ -13,7 +14,9 @@ import com.intellij.openapi.vfs.impl.jar.CoreJarFileSystem
 import com.intellij.psi.PsiFile
 import com.intellij.psi.PsiManager
 import com.intellij.util.io.URLUtil.JAR_SEPARATOR
+import java.nio.file.Files
 import java.nio.file.Path
+import java.util.Properties
 
 object LibraryUtils {
     /**
@@ -83,4 +86,46 @@ object LibraryUtils {
         )
         return files
     }
+
+    // Copied (and adjusted) from JavaSdkImpl#readModulesFromReleaseFile
+    private fun readModulesFromReleaseFile(jrtBaseDir: Path): List<String?>? {
+        Files.newInputStream(jrtBaseDir.resolve("release")).use { stream ->
+            val p = Properties()
+            p.load(stream)
+            val modules = p.getProperty("MODULES")
+            if (modules != null) {
+                return StringUtil.split(StringUtil.unquoteString(modules), " ")
+            }
+        }
+        return null
+    }
+
+    // Copied from JdkUtil#isModularRuntime
+    private fun isModularRuntime(homePath: Path): Boolean {
+        return Files.isRegularFile(homePath.resolve("lib/jrt-fs.jar")) || isExplodedModularRuntime(homePath)
+    }
+
+    // Copied from JdkUtil#isExplodedModularRuntime
+    private fun isExplodedModularRuntime(homePath: Path): Boolean {
+        return Files.isDirectory(homePath.resolve("modules/java.base"))
+    }
+
+    // Copied (and adjusted) from JavaSdkImpl#findClasses
+    // Currently, handle modular runtime only
+    fun findClassesFromJdkHome(jdkHome: Path): List<String> {
+        val result = mutableListOf<String>()
+
+        if (isModularRuntime(jdkHome)) {
+            val jrtBaseUrl: String = StandardFileSystems.JRT_PROTOCOL_PREFIX + jdkHome.toString() + JAR_SEPARATOR
+            val modules = readModulesFromReleaseFile(jdkHome)
+            if (modules != null) {
+                for (module in modules) {
+                    result.add(jrtBaseUrl + module)
+                }
+            }
+        }
+
+        result.sort()
+        return result
+    }
 }