Find Usages: Add special type for usages inside of type aliases

#KT-13955 Fixed

ChangeLog.md

@@ -19,6 +19,7 @@
 - [`KT-13385`](https://youtrack.jetbrains.com/issue/KT-13385) Move: Quote package name (if necessary) when moving declarations to new file
 - [`KT-13395`](https://youtrack.jetbrains.com/issue/KT-13395) Introduce Property: Fix duplicate count in popup window
 - [`KT-13611`](https://youtrack.jetbrains.com/issue/KT-13611) Go to Class: Fix presentation of type aliases
+- [`KT-13955`](https://youtrack.jetbrains.com/issue/KT-13955) Find Usages: Add special type for usages inside of type aliases
 
 ## 1.1-M01 (EAP-1)
 

idea/idea-analysis/src/org/jetbrains/kotlin/idea/findUsages/UsageTypeUtils.kt

@@ -112,6 +112,9 @@ object UsageTypeUtils {
                 refExpr.getParentOfTypeAndBranch<KtSuperExpression>(){ superTypeQualifier } != null ->
                     SUPER_TYPE_QUALIFIER
 
+                refExpr.getParentOfTypeAndBranch<KtTypeAlias> { getTypeReference() } != null ->
+                    TYPE_ALIAS
+
                 else -> null
             }
         }
@@ -217,6 +220,7 @@ enum class UsageTypeEnum {
     COMPANION_OBJECT_ACCESS,
     EXTENSION_RECEIVER_TYPE,
     SUPER_TYPE_QUALIFIER,
+    TYPE_ALIAS,
 
     FUNCTION_CALL,
     IMPLICIT_GET,

idea/src/org/jetbrains/kotlin/idea/findUsages/KotlinUsageTypeProvider.kt

@@ -46,6 +46,7 @@ object KotlinUsageTypeProvider : UsageTypeProviderEx {
             COMPANION_OBJECT_ACCESS -> KotlinUsageTypes.COMPANION_OBJECT_ACCESS
             EXTENSION_RECEIVER_TYPE -> KotlinUsageTypes.EXTENSION_RECEIVER_TYPE
             SUPER_TYPE_QUALIFIER -> KotlinUsageTypes.SUPER_TYPE_QUALIFIER
+            TYPE_ALIAS -> KotlinUsageTypes.TYPE_ALIAS
 
             FUNCTION_CALL -> KotlinUsageTypes.FUNCTION_CALL
             IMPLICIT_GET -> KotlinUsageTypes.IMPLICIT_GET
@@ -89,6 +90,7 @@ object KotlinUsageTypes {
     val COMPANION_OBJECT_ACCESS = UsageType(KotlinBundle.message("usageType.companion.object"))
     val EXTENSION_RECEIVER_TYPE = UsageType(KotlinBundle.message("usageType.extension.receiver.type"))
     val SUPER_TYPE_QUALIFIER = UsageType(KotlinBundle.message("usageType.super.type.qualifier"))
+    val TYPE_ALIAS = UsageType("Type alias")
 
     // functions
     val FUNCTION_CALL = UsageType(KotlinBundle.message("usageType.function.call"))

idea/testData/findUsages/kotlin/findClassUsages/usageInTypeAlias.0.kt

@@ -0,0 +1,5 @@
+// PSI_ELEMENT: org.jetbrains.kotlin.psi.KtClass
+// OPTIONS: usages
+class <caret>A<T>
+
+typealias B = A<Int>

idea/testData/findUsages/kotlin/findClassUsages/usageInTypeAlias.results.txt

@@ -0,0 +1 @@
+Type alias 5 typealias B = A<Int>

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

@@ -623,6 +623,12 @@ public class FindUsagesTestGenerated extends AbstractFindUsagesTest {
                 String fileName = KotlinTestUtils.navigationMetadata("idea/testData/findUsages/kotlin/findClassUsages/primaryConstructorWithDefaultParams.0.kt");
                 doTest(fileName);
             }
+
+            @TestMetadata("usageInTypeAlias.0.kt")
+            public void testUsageInTypeAlias() throws Exception {
+                String fileName = KotlinTestUtils.navigationMetadata("idea/testData/findUsages/kotlin/findClassUsages/usageInTypeAlias.0.kt");
+                doTest(fileName);
+            }
         }
 
         @TestMetadata("idea/testData/findUsages/kotlin/findFunctionUsages")