Disabled smart search for classes from library

idea/idea-analysis/src/org/jetbrains/kotlin/idea/search/usagesSearch/destructuringDeclarationUsages.kt

@@ -41,6 +41,7 @@ import org.jetbrains.kotlin.idea.search.ideaExtensions.KotlinRequestResultProces
 import org.jetbrains.kotlin.idea.search.restrictToKotlinSources
 import org.jetbrains.kotlin.idea.search.usagesSearch.DestructuringDeclarationUsageSearch.*
 import org.jetbrains.kotlin.idea.util.FuzzyType
+import org.jetbrains.kotlin.idea.util.ProjectRootsUtil
 import org.jetbrains.kotlin.idea.util.fuzzyExtensionReceiverType
 import org.jetbrains.kotlin.idea.util.toFuzzyType
 import org.jetbrains.kotlin.kdoc.psi.impl.KDocName
@@ -59,7 +60,6 @@ enum class DestructuringDeclarationUsageSearch {
 
 var destructuringDeclarationUsageSearchMode = if (ApplicationManager.getApplication().isUnitTestMode) ALWAYS_SMART else PLAIN_WHEN_NEEDED
 
-//TODO: compiled code
 //TODO: check if it's too expensive
 
 fun findDestructuringDeclarationUsages(
@@ -127,7 +127,7 @@ private class Processor(
 
     // we don't need to search usages of declarations in Java because Java doesn't have implicitly typed declarations so such usages cannot affect Kotlin code
     //TODO: what about Scala and other JVM-languages?
-    private val declarationUsageScope = GlobalSearchScope.projectScope(project).restrictToKotlinSources() //TODO: search in libraries?
+    private val declarationUsageScope = GlobalSearchScope.projectScope(project).restrictToKotlinSources()
 
     private val declarationsToProcess = ArrayDeque<PsiElement>()
     private val declarationsToProcessSet = HashSet<PsiElement>()
@@ -142,6 +142,12 @@ private class Processor(
             else -> return
         }
 
+        // for data class from library always use plain search because we cannot search usages in compiled code (we could though)
+        if (!ProjectRootsUtil.isInProjectSource(psiClass)) {
+            plainSearchHandler(searchScope)
+            return
+        }
+
         val parameters = ClassInheritorsSearch.SearchParameters(psiClass, GlobalSearchScope.allScope(project), true, true, false)
         val classesToSearch = listOf(psiClass) + ClassInheritorsSearch.search(parameters).findAll()
 

idea/testData/findUsages/kotlin/conventions/components/dataClassFromStdlib.0.kt

@@ -0,0 +1,12 @@
+// PSI_ELEMENT: org.jetbrains.kotlin.psi.KtFunction
+// OPTIONS: usages
+// FIND_BY_REF
+
+fun foo(p: Pair<Int, Int>) {
+    p.<caret>component1()
+    val (x, y) = p
+}
+
+fun foo() {
+    val (x, y) = 1 to "a"
+}

idea/testData/findUsages/kotlin/conventions/components/dataClassFromStdlib.results.txt

@@ -0,0 +1,3 @@
+Function call 6 p.component1()
+Value read 11 val (x, y) = 1 to "a"
+Value read 7 val (x, y) = p

idea/tests/org/jetbrains/kotlin/findUsages/FindUsagesTestGenerated.java

@@ -194,6 +194,12 @@ public class FindUsagesTestGenerated extends AbstractFindUsagesTest {
                     doTest(fileName);
                 }
 
+                @TestMetadata("dataClassFromStdlib.0.kt")
+                public void testDataClassFromStdlib() throws Exception {
+                    String fileName = KotlinTestUtils.navigationMetadata("idea/testData/findUsages/kotlin/conventions/components/dataClassFromStdlib.0.kt");
+                    doTest(fileName);
+                }
+
                 @TestMetadata("extensionComponentFun.0.kt")
                 public void testExtensionComponentFun() throws Exception {
                     String fileName = KotlinTestUtils.navigationMetadata("idea/testData/findUsages/kotlin/conventions/components/extensionComponentFun.0.kt");