Uast: don't throw exception if can't get a receiver parameter for annotation (KT-40494)

plugins/uast-kotlin/src/org/jetbrains/uast/kotlin/declarations/KotlinUAnnotation.kt

@@ -19,7 +19,7 @@ import org.jetbrains.kotlin.resolve.descriptorUtil.annotationClass
 import org.jetbrains.kotlin.resolve.descriptorUtil.fqNameUnsafe
 import org.jetbrains.kotlin.resolve.source.getPsi
 import org.jetbrains.kotlin.types.ErrorUtils
-import org.jetbrains.kotlin.utils.addToStdlib.firstIsInstance
+import org.jetbrains.kotlin.utils.addToStdlib.firstIsInstanceOrNull
 import org.jetbrains.kotlin.utils.addToStdlib.safeAs
 import org.jetbrains.uast.*
 import org.jetbrains.uast.kotlin.declarations.KotlinUIdentifier
@@ -103,7 +103,7 @@ abstract class KotlinUAnnotationBase<T : KtCallElement>(
 
         val superParent = super.convertParent() ?: return null
         if (annotationUseSiteTarget() == AnnotationUseSiteTarget.RECEIVER) {
-            (superParent.uastParent as? KotlinUMethod)?.uastParameters?.firstIsInstance<KotlinReceiverUParameter>()?.let {
+            (superParent.uastParent as? KotlinUMethod)?.uastParameters?.firstIsInstanceOrNull<KotlinReceiverUParameter>()?.let {
                 return it
             }
         }

plugins/uast-kotlin/testData/ReceiverFun.kt

@@ -1,3 +1,6 @@
-annotation class MyReceiverAnnotation
+annotation class MyReceiverAnnotation(val name: String = "")
 
-fun @receiver:MyReceiverAnnotation String.foo() = this.length
+fun @receiver:MyReceiverAnnotation String.foo() = this.length
+
+val @receiver:MyReceiverAnnotation("RegExp") String.rx : Regex
+    get() { return toRegex() }

plugins/uast-kotlin/testData/ReceiverFun.log-ide.txt

@@ -0,0 +1,22 @@
+UFile (package = )
+    UClass (name = ReceiverFunKt)
+        UMethod (name = foo)
+            UParameter (name = $this$foo)
+                UAnnotation (fqName = MyReceiverAnnotation)
+                UAnnotation (fqName = org.jetbrains.annotations.NotNull)
+            UBlockExpression
+                UReturnExpression
+                    UQualifiedReferenceExpression
+                        UThisExpression (label = null)
+                        USimpleNameReferenceExpression (identifier = length)
+        UMethod (name = getRx)
+            UParameter (name = $this$getRx)
+                UAnnotation (fqName = org.jetbrains.annotations.NotNull)
+            UBlockExpression
+                UReturnExpression
+                    UCallExpression (kind = UastCallKind(name='method_call'), argCount = 0))
+                        UIdentifier (Identifier (toRegex))
+                        USimpleNameReferenceExpression (identifier = toRegex, resolvesTo = null)
+    UClass (name = MyReceiverAnnotation)
+        UAnnotationMethod (name = name)
+            ULiteralExpression (value = "")

plugins/uast-kotlin/testData/ReceiverFun.log.txt

@@ -9,4 +9,14 @@ UFile (package = )
                     UQualifiedReferenceExpression
                         UThisExpression (label = null)
                         USimpleNameReferenceExpression (identifier = length)
+        UMethod (name = getRx)
+            UParameter (name = $this$rx)
+                UAnnotation (fqName = org.jetbrains.annotations.NotNull)
+            UBlockExpression
+                UReturnExpression
+                    UCallExpression (kind = UastCallKind(name='method_call'), argCount = 0))
+                        UIdentifier (Identifier (toRegex))
+                        USimpleNameReferenceExpression (identifier = toRegex, resolvesTo = null)
     UClass (name = MyReceiverAnnotation)
+        UAnnotationMethod (name = name)
+            ULiteralExpression (value = "")

plugins/uast-kotlin/testData/ReceiverFun.render-ide.txt

@@ -0,0 +1,12 @@
+public final class ReceiverFunKt {
+    public static final fun foo(@MyReceiverAnnotation @org.jetbrains.annotations.NotNull $this$foo: java.lang.String) : int {
+        return this.length
+    }
+    public static final fun getRx(@org.jetbrains.annotations.NotNull $this$getRx: java.lang.String) : kotlin.text.Regex {
+        return toRegex()
+    }
+}
+
+public abstract annotation MyReceiverAnnotation {
+    public abstract fun name() : java.lang.String = UastEmptyExpression
+}

plugins/uast-kotlin/testData/ReceiverFun.render.txt

@@ -2,7 +2,11 @@ public final class ReceiverFunKt {
     public static final fun foo(@MyReceiverAnnotation @org.jetbrains.annotations.NotNull $this$foo: java.lang.String) : int {
         return this.length
     }
+    public static final fun getRx(@org.jetbrains.annotations.NotNull $this$rx: java.lang.String) : kotlin.text.Regex {
+        return toRegex()
+    }
 }
 
 public abstract annotation MyReceiverAnnotation {
+    public abstract fun name() : java.lang.String = UastEmptyExpression
 }