Stop considering injected files as Kotlin source roots (KT-15032)

We should have a special facade for them as descriptors are not
present in ordinal project facade.

Caused by change in idea 171 (https://github.com/JetBrains/intellij-community/commit/b3527d9a20f4b9391e98b426beb2548fb3efc0fe)

 #KT-15032 Fixed

compiler/frontend/src/org/jetbrains/kotlin/psi/psiUtil/psiUtils.kt

@@ -16,6 +16,7 @@
 
 package org.jetbrains.kotlin.psi.psiUtil
 
+import com.intellij.injected.editor.VirtualFileWindow
 import com.intellij.openapi.util.TextRange
 import com.intellij.psi.*
 import com.intellij.psi.search.PsiSearchScopeUtil
@@ -329,9 +330,10 @@ fun PsiElement.getElementTextWithContext(): String {
     val inFileParentOffset = elementContextOffset - startContextOffset
 
 
+    val isInjected = containingFile is VirtualFileWindow
     return StringBuilder(topLevelElement.text)
             .insert(inFileParentOffset, "<caret>")
-            .insert(0, "File name: ${containingFile.name} Physical: ${containingFile.isPhysical}\n")
+            .insert(0, "File name: ${containingFile.name} Physical: ${containingFile.isPhysical} Injected: $isInjected\n")
             .toString()
 }
 

idea/idea-analysis/src/org/jetbrains/kotlin/idea/caches/resolve/IdeaModuleInfos.kt

@@ -30,11 +30,10 @@ import com.intellij.psi.util.CachedValuesManager
 import com.intellij.util.SmartList
 import org.jetbrains.kotlin.analyzer.ModuleInfo
 import org.jetbrains.kotlin.descriptors.ModuleDescriptor
+import org.jetbrains.kotlin.idea.util.isInSourceContentWithoutInjected
 import org.jetbrains.kotlin.name.Name
 import org.jetbrains.kotlin.resolve.jvm.GlobalSearchScopeWithModuleSources
-import org.jetbrains.kotlin.utils.alwaysNull
 import org.jetbrains.kotlin.utils.emptyOrSingletonList
-import java.lang.reflect.Method
 import java.util.*
 
 interface IdeaModuleInfo : ModuleInfo {
@@ -155,7 +154,7 @@ private class ModuleProductionSourceScope(module: Module) : ModuleSourceScope(mo
     // KT-6206
     override fun hashCode(): Int = 31 * module.hashCode()
 
-    override fun contains(file: VirtualFile) = moduleFileIndex.isInSourceContent(file) && !moduleFileIndex.isInTestSourceContent(file)
+    override fun contains(file: VirtualFile) = moduleFileIndex.isInSourceContentWithoutInjected(file) && !moduleFileIndex.isInTestSourceContent(file)
 
     override fun toString() = "ModuleProductionSourceScope($module)"
 }

idea/idea-analysis/src/org/jetbrains/kotlin/idea/caches/resolve/getModuleInfo.kt

@@ -28,6 +28,7 @@ import org.jetbrains.kotlin.asJava.classes.KtLightClassForFacade
 import org.jetbrains.kotlin.asJava.elements.KtLightElement
 import org.jetbrains.kotlin.idea.core.script.KotlinScriptConfigurationManager
 import org.jetbrains.kotlin.idea.util.ProjectRootsUtil
+import org.jetbrains.kotlin.idea.util.isInSourceContentWithoutInjected
 import org.jetbrains.kotlin.psi.*
 import org.jetbrains.kotlin.psi.psiUtil.getParentOfType
 import org.jetbrains.kotlin.script.getScriptDefinition
@@ -95,7 +96,7 @@ private fun getModuleInfoByVirtualFile(project: Project, virtualFile: VirtualFil
             warnIfDecompiled()
             return module.testSourceInfo()
         }
-        else if (moduleFileIndex.isInSourceContent(virtualFile)) {
+        else if (moduleFileIndex.isInSourceContentWithoutInjected(virtualFile)) {
             warnIfDecompiled()
             return module.productionSourceInfo()
         }

idea/idea-analysis/src/org/jetbrains/kotlin/idea/util/ProjectRootsUtil.kt

@@ -18,7 +18,9 @@ package org.jetbrains.kotlin.idea.util
 
 import com.intellij.ide.highlighter.ArchiveFileType
 import com.intellij.ide.highlighter.JavaClassFileType
+import com.intellij.injected.editor.VirtualFileWindow
 import com.intellij.openapi.project.Project
+import com.intellij.openapi.roots.FileIndex
 import com.intellij.openapi.roots.ProjectFileIndex
 import com.intellij.openapi.util.Ref
 import com.intellij.openapi.vfs.VirtualFile
@@ -32,6 +34,10 @@ import org.jetbrains.kotlin.idea.util.application.runReadAction
 
 private val classFileLike = listOf(JavaClassFileType.INSTANCE, KotlinBuiltInFileType, KotlinModuleFileType.INSTANCE)
 
+fun FileIndex.isInSourceContentWithoutInjected(file: VirtualFile): Boolean {
+    return file !is VirtualFileWindow && isInSourceContent(file)
+}
+
 object ProjectRootsUtil {
     @JvmStatic fun isInContent(project: Project, file: VirtualFile, includeProjectSource: Boolean,
                                includeLibrarySource: Boolean, includeLibraryClasses: Boolean,
@@ -39,7 +45,7 @@ object ProjectRootsUtil {
                                fileIndex: ProjectFileIndex = ProjectFileIndex.SERVICE.getInstance(project),
                                isJsProjectRef: Ref<Boolean?>? = null): Boolean {
 
-        if (includeProjectSource && fileIndex.isInSourceContent(file)) return true
+        if (includeProjectSource && fileIndex.isInSourceContentWithoutInjected(file)) return true
 
         if (!includeLibraryClasses && !includeLibrarySource) return false
 

idea/testData/highlighter/KotlinInjection.kt

@@ -0,0 +1,6 @@
+package language_injection
+
+<info descr="null">import</info> org.intellij.lang.annotations.<info descr="null">Language</info>
+
+<info descr="null">@Language</info>("kotlin")
+val <info descr="null">test</info> = "<inject descr="null">fun test2() {}</inject>"

idea/tests/org/jetbrains/kotlin/idea/highlighter/HighlightingTestGenerated.java

@@ -78,6 +78,12 @@ public class HighlightingTestGenerated extends AbstractHighlightingTest {
         doTest(fileName);
     }
 
+    @TestMetadata("KotlinInjection.kt")
+    public void testKotlinInjection() throws Exception {
+        String fileName = KotlinTestUtils.navigationMetadata("idea/testData/highlighter/KotlinInjection.kt");
+        doTest(fileName);
+    }
+
     @TestMetadata("Labels.kt")
     public void testLabels() throws Exception {
         String fileName = KotlinTestUtils.navigationMetadata("idea/testData/highlighter/Labels.kt");