KT-6191 Support completion for backing field

#KT-6191 Fixed

idea/src/org/jetbrains/kotlin/idea/completion/CompletionSession.kt

@@ -20,6 +20,7 @@ import com.intellij.codeInsight.completion.*
 import com.intellij.openapi.project.Project
 import com.intellij.openapi.vfs.VirtualFile
 import com.intellij.patterns.CharPattern
+import com.intellij.patterns.ElementPattern
 import com.intellij.patterns.PatternCondition
 import com.intellij.patterns.StandardPatterns
 import com.intellij.psi.PsiElement
@@ -37,10 +38,12 @@ import org.jetbrains.kotlin.idea.refactoring.comparePossiblyOverridingDescriptor
 import org.jetbrains.kotlin.idea.references.JetSimpleNameReference
 import org.jetbrains.kotlin.idea.util.CallType
 import org.jetbrains.kotlin.idea.util.makeNotNullable
+import org.jetbrains.kotlin.lexer.JetTokens
 import org.jetbrains.kotlin.load.java.descriptors.SamConstructorDescriptorKindExclude
 import org.jetbrains.kotlin.psi.*
 import org.jetbrains.kotlin.psi.psiUtil.getStrictParentOfType
 import org.jetbrains.kotlin.psi.psiUtil.isAncestor
+import org.jetbrains.kotlin.psi.psiUtil.prevLeaf
 import org.jetbrains.kotlin.resolve.BindingContext
 import org.jetbrains.kotlin.resolve.bindingContextUtil.getDataFlowInfo
 import org.jetbrains.kotlin.resolve.calls.smartcasts.SmartCastUtils
@@ -90,6 +93,7 @@ abstract class CompletionSessionBase(protected val configuration: CompletionSess
     protected val bindingContext: BindingContext? = expression?.let { resolutionFacade.analyze(it, BodyResolveMode.PARTIAL_FOR_COMPLETION) }
     protected val inDescriptor: DeclarationDescriptor? = expression?.let { bindingContext!!.get(BindingContext.RESOLUTION_SCOPE, it)?.getContainingDeclaration() }
 
+
     private fun singleCharPattern(char: Char): CharPattern {
         return StandardPatterns.character().with(
                 object : PatternCondition<Char>(char.toString()) {
@@ -97,8 +101,20 @@ abstract class CompletionSessionBase(protected val configuration: CompletionSess
                 })
     }
 
-    private val kotlinIdentifierStartPattern = StandardPatterns.and(StandardPatterns.character().javaIdentifierStart(), StandardPatterns.not(singleCharPattern('$')))
-    private val kotlinIdentifierPartPattern = StandardPatterns.and(StandardPatterns.character().javaIdentifierPart(), StandardPatterns.not(singleCharPattern('$')))
+    private val kotlinIdentifierStartPattern: ElementPattern<Char>
+    private val kotlinIdentifierPartPattern: ElementPattern<Char>
+
+    ;{
+        val includeDollar = position.prevLeaf()?.getNode()?.getElementType() != JetTokens.SHORT_TEMPLATE_ENTRY_START
+        if (includeDollar) {
+            kotlinIdentifierStartPattern = StandardPatterns.character().javaIdentifierStart()
+            kotlinIdentifierPartPattern = StandardPatterns.character().javaIdentifierPart()
+        }
+        else {
+            kotlinIdentifierStartPattern = StandardPatterns.and(StandardPatterns.character().javaIdentifierStart(), StandardPatterns.not(singleCharPattern('$')))
+            kotlinIdentifierPartPattern = StandardPatterns.and(StandardPatterns.character().javaIdentifierPart(), StandardPatterns.not(singleCharPattern('$')))
+        }
+    }
 
     protected val prefix: String = CompletionUtil.findIdentifierPrefix(
             parameters.getPosition().getContainingFile(),
@@ -135,11 +151,10 @@ abstract class CompletionSessionBase(protected val configuration: CompletionSess
     }
 
     protected val collector: LookupElementsCollector = LookupElementsCollector(
-            prefixMatcher, parameters, resolutionFacade, lookupElementFactory, expression?.getParent() is JetSimpleNameStringTemplateEntry)
+            prefixMatcher, parameters, resolutionFacade, lookupElementFactory, inDescriptor, expression?.getParent() is JetSimpleNameStringTemplateEntry)
 
     protected val project: Project = position.getProject()
 
-
     protected val originalSearchScope: GlobalSearchScope = parameters.getOriginalFile().getResolveScope()
 
     // we need to exclude the original file from scope because our resolve session is built with this file replaced by synthetic one
@@ -378,7 +393,7 @@ class SmartCompletionSession(configuration: CompletionSessionConfiguration, para
         if (expression != null) {
             val mapper = ToFromOriginalFileMapper(parameters.getOriginalFile() as JetFile, position.getContainingFile() as JetFile, parameters.getOffset())
             val completion = SmartCompletion(expression, resolutionFacade, moduleDescriptor,
-                                             bindingContext!!, { isVisibleDescriptor(it) }, prefixMatcher, originalSearchScope,
+                                             bindingContext!!, { isVisibleDescriptor(it) }, inDescriptor, prefixMatcher, originalSearchScope,
                                              mapper, lookupElementFactory)
             val result = completion.execute()
             if (result != null) {

idea/src/org/jetbrains/kotlin/idea/completion/CompletionUtils.kt

@@ -16,58 +16,38 @@
 
 package org.jetbrains.kotlin.idea.completion
 
-import com.intellij.openapi.util.Key
-import com.intellij.codeInsight.lookup.LookupElement
-import com.intellij.codeInsight.lookup.AutoCompletionPolicy
-import com.intellij.openapi.progress.ProcessCanceledException
-import com.intellij.codeInsight.completion.CompletionService
 import com.intellij.codeInsight.completion.CompletionProgressIndicator
-import org.jetbrains.kotlin.descriptors.DeclarationDescriptor
-import org.jetbrains.kotlin.idea.util.IdeDescriptorRenderers
-import com.intellij.codeInsight.completion.PrefixMatcher
-import org.jetbrains.kotlin.name.Name
-import com.intellij.codeInsight.lookup.LookupElementPresentation
-import com.intellij.codeInsight.lookup.LookupElementDecorator
+import com.intellij.codeInsight.completion.CompletionService
 import com.intellij.codeInsight.completion.InsertionContext
-import org.jetbrains.kotlin.idea.completion.handlers.CastReceiverInsertHandler
-import org.jetbrains.kotlin.descriptors.ClassifierDescriptor
-import org.jetbrains.kotlin.descriptors.CallableDescriptor
-import org.jetbrains.kotlin.descriptors.DeclarationDescriptorWithVisibility
-import org.jetbrains.kotlin.resolve.BindingContext
-import org.jetbrains.kotlin.psi.JetSimpleNameExpression
-import org.jetbrains.kotlin.descriptors.Visibilities
-import org.jetbrains.kotlin.resolve.scopes.receivers.ReceiverValue
-import org.jetbrains.kotlin.psi.psiUtil.getReceiverExpression
-import org.jetbrains.kotlin.resolve.scopes.receivers.ExpressionReceiver
-import org.jetbrains.kotlin.types.expressions.ExpressionTypingUtils
-import org.jetbrains.kotlin.descriptors.ReceiverParameterDescriptor
-import org.jetbrains.kotlin.resolve.DescriptorToSourceUtils
-import org.jetbrains.kotlin.psi.JetFunctionLiteral
-import org.jetbrains.kotlin.psi.JetFunctionLiteralExpression
-import org.jetbrains.kotlin.psi.JetValueArgument
-import org.jetbrains.kotlin.psi.JetValueArgumentList
-import org.jetbrains.kotlin.psi.JetCallExpression
-import org.jetbrains.kotlin.psi.JetExpression
-import java.util.ArrayList
-import org.jetbrains.kotlin.idea.util.getImplicitReceiversWithInstance
-import com.intellij.codeInsight.lookup.LookupElementBuilder
-import org.jetbrains.kotlin.renderer.DescriptorRenderer
-import org.jetbrains.kotlin.idea.util.FuzzyType
-import org.jetbrains.kotlin.psi.JetLabeledExpression
-import org.jetbrains.kotlin.psi.JetElement
-import org.jetbrains.kotlin.psi.psiUtil.parents
-import org.jetbrains.kotlin.psi.JetReferenceExpression
-import org.jetbrains.kotlin.descriptors.SimpleFunctionDescriptor
-import org.jetbrains.kotlin.psi.JetDeclarationWithBody
+import com.intellij.codeInsight.completion.PrefixMatcher
+import com.intellij.codeInsight.lookup.*
+import com.intellij.openapi.progress.ProcessCanceledException
+import com.intellij.openapi.util.Key
+import com.intellij.util.PlatformIcons
 import org.jetbrains.kotlin.builtins.KotlinBuiltIns
+import org.jetbrains.kotlin.descriptors.*
+import org.jetbrains.kotlin.idea.caches.resolve.ResolutionFacade
+import org.jetbrains.kotlin.idea.completion.handlers.CastReceiverInsertHandler
 import org.jetbrains.kotlin.idea.completion.handlers.WithTailInsertHandler
-import org.jetbrains.kotlin.psi.JetLoopExpression
-import org.jetbrains.kotlin.renderer.DescriptorRendererBuilder
-import org.jetbrains.kotlin.renderer.NameShortness
+import org.jetbrains.kotlin.idea.util.FuzzyType
+import org.jetbrains.kotlin.idea.util.getImplicitReceiversWithInstance
+import org.jetbrains.kotlin.name.Name
+import org.jetbrains.kotlin.psi.*
+import org.jetbrains.kotlin.psi.psiUtil.getReceiverExpression
+import org.jetbrains.kotlin.psi.psiUtil.parents
+import org.jetbrains.kotlin.renderer.DescriptorRenderer
+import org.jetbrains.kotlin.resolve.BindingContext
+import org.jetbrains.kotlin.resolve.DescriptorToSourceUtils
+import org.jetbrains.kotlin.resolve.DescriptorUtils
+import org.jetbrains.kotlin.resolve.scopes.receivers.ExpressionReceiver
+import org.jetbrains.kotlin.resolve.scopes.receivers.ReceiverValue
+import org.jetbrains.kotlin.types.expressions.ExpressionTypingUtils
+import java.util.ArrayList
 
 enum class ItemPriority {
     MULTIPLE_ARGUMENTS_ITEM
     DEFAULT
+    BACKING_FIELD
     NAMED_PARAMETER
 }
 
@@ -121,7 +101,20 @@ fun rethrowWithCancelIndicator(exception: ProcessCanceledException): ProcessCanc
     return exception
 }
 
-fun PrefixMatcher.asNameFilter() = { (name: Name) -> !name.isSpecial() && prefixMatches(name.getIdentifier()) }
+fun PrefixMatcher.asNameFilter() = { (name: Name) ->
+    if (name.isSpecial()) {
+        false
+    }
+    else {
+        val identifier = name.getIdentifier()
+        if (getPrefix().startsWith("$")) { // we need properties from scope for backing field completion
+            prefixMatches("$" + identifier)
+        }
+        else {
+            prefixMatches(identifier)
+        }
+    }
+}
 
 fun LookupElementPresentation.prependTailText(text: String, grayed: Boolean) {
     val tails = getTailFragments()
@@ -354,3 +347,36 @@ fun breakOrContinueExpressionItems(position: JetElement, breakOrContinue: String
     }
     return result
 }
+
+fun LookupElementFactory.createBackingFieldLookupElement(
+        property: PropertyDescriptor,
+        inDescriptor: DeclarationDescriptor?,
+        resolutionFacade: ResolutionFacade
+): LookupElement? {
+    if (inDescriptor == null) return null // no backing field accessible
+    val insideAccessor = inDescriptor is PropertyAccessorDescriptor && inDescriptor.getCorrespondingProperty() == property
+    if (!insideAccessor) {
+        val container = property.getContainingDeclaration()
+        if (container !is ClassDescriptor || !DescriptorUtils.isAncestor(container, inDescriptor, false)) return null // backing field not accessible
+    }
+
+    val declaration = (DescriptorToSourceUtils.descriptorToDeclaration(property) as? JetProperty) ?: return null
+
+    val accessors = declaration.getAccessors()
+    if (accessors.all { it.getBodyExpression() == null }) return null // makes no sense to access backing field - it's the same as accessing property directly
+
+    val bindingContext = resolutionFacade.analyze(declaration)
+    if (!bindingContext[BindingContext.BACKING_FIELD_REQUIRED, property]) return null
+
+    val lookupElement = createLookupElement(resolutionFacade, property, true)
+    return object : LookupElementDecorator<LookupElement>(lookupElement) {
+        override fun getLookupString() = "$" + super.getLookupString()
+        override fun getAllLookupStrings() = setOf(getLookupString())
+
+        override fun renderElement(presentation: LookupElementPresentation) {
+            super.renderElement(presentation)
+            presentation.setItemText("$" + presentation.getItemText())
+            presentation.setIcon(PlatformIcons.FIELD_ICON) //TODO: special icon
+        }
+    }.assignPriority(ItemPriority.BACKING_FIELD)
+}

idea/src/org/jetbrains/kotlin/idea/completion/LookupElementsCollector.kt

@@ -16,26 +16,28 @@
 
 package org.jetbrains.kotlin.idea.completion
 
+import com.intellij.codeInsight.completion.CompletionParameters
+import com.intellij.codeInsight.completion.CompletionResultSet
 import com.intellij.codeInsight.completion.InsertionContext
+import com.intellij.codeInsight.completion.PrefixMatcher
 import com.intellij.codeInsight.lookup.LookupElement
 import com.intellij.codeInsight.lookup.LookupElementDecorator
 import com.intellij.codeInsight.lookup.LookupElementPresentation
-import org.jetbrains.kotlin.descriptors.DeclarationDescriptor
-import org.jetbrains.kotlin.builtins.KotlinBuiltIns
-import org.jetbrains.kotlin.idea.completion.handlers.*
-import com.intellij.codeInsight.completion.PrefixMatcher
-import java.util.ArrayList
-import com.intellij.codeInsight.completion.CompletionResultSet
-import org.jetbrains.kotlin.descriptors.FunctionDescriptor
 import com.intellij.openapi.util.TextRange
-import com.intellij.codeInsight.completion.CompletionParameters
+import org.jetbrains.kotlin.builtins.KotlinBuiltIns
+import org.jetbrains.kotlin.descriptors.DeclarationDescriptor
+import org.jetbrains.kotlin.descriptors.FunctionDescriptor
+import org.jetbrains.kotlin.descriptors.PropertyDescriptor
 import org.jetbrains.kotlin.idea.caches.resolve.ResolutionFacade
+import org.jetbrains.kotlin.idea.completion.handlers.*
+import java.util.ArrayList
 
 class LookupElementsCollector(
         private val prefixMatcher: PrefixMatcher,
         private val completionParameters: CompletionParameters,
         private val resolutionFacade: ResolutionFacade,
         private val lookupElementFactory: LookupElementFactory,
+        private val inDescriptor: DeclarationDescriptor?,
         private val surroundCallsWithBraces: Boolean
 ) {
     private val elements = ArrayList<LookupElement>()
@@ -114,6 +116,13 @@ class LookupElementsCollector(
                 }
             }
         }
+
+        if (descriptor is PropertyDescriptor) {
+            val lookupElement = lookupElementFactory.createBackingFieldLookupElement(descriptor, inDescriptor, resolutionFacade)
+            if (lookupElement != null) {
+                addElement(lookupElement)
+            }
+        }
     }
 
     public fun addElement(element: LookupElement) {

idea/src/org/jetbrains/kotlin/idea/completion/smart/SmartCompletion.kt

@@ -52,6 +52,7 @@ class SmartCompletion(
         val moduleDescriptor: ModuleDescriptor,
         val bindingContext: BindingContext,
         val visibilityFilter: (DeclarationDescriptor) -> Boolean,
+        val inDescriptor: DeclarationDescriptor?,
         val prefixMatcher: PrefixMatcher,
         val inheritorSearchScope: GlobalSearchScope,
         val toFromOriginalFileMapper: ToFromOriginalFileMapper,
@@ -141,11 +142,18 @@ class SmartCompletion(
 
             val result = ArrayList<LookupElement>()
             val types = descriptor.fuzzyTypes(smartCastTypes)
-            val classifier = { (expectedInfo: ExpectedInfo) -> types.classifyExpectedInfo(expectedInfo) }
-            result.addLookupElements(descriptor, expectedInfos, classifier) { descriptor ->
+            val infoClassifier = { (expectedInfo: ExpectedInfo) -> types.classifyExpectedInfo(expectedInfo) }
+
+            result.addLookupElements(descriptor, expectedInfos, infoClassifier) { descriptor ->
                 lookupElementFactory.createLookupElement(descriptor, resolutionFacade, bindingContext, true)
             }
 
+            if (descriptor is PropertyDescriptor) {
+                result.addLookupElements(descriptor, expectedInfos, infoClassifier) { descriptor ->
+                    lookupElementFactory.createBackingFieldLookupElement(descriptor, inDescriptor, resolutionFacade)
+                }
+            }
+
             if (receiver == null) {
                 toFunctionReferenceLookupElement(descriptor, functionExpectedInfos)?.let { result.add(it) }
             }

idea/testData/completion/basic/common/BackingFields1.kt

@@ -0,0 +1,26 @@
+var globalProperty = "abc" // has backing field and accessor but backing field is not accessible
+    get() = $globalProperty + 1
+
+class C {
+    var property1 = "abc" // has backing field but accessors are default - no sense to show in completion
+
+    var property2 = "abc" // has backing field but accessors are also default
+        private set
+
+    var property3: String // no backing field
+        get() = "abc"
+        set(value){}
+
+    var property4 = "abc" // has backing field and accessor
+        get() = $property4 + 1
+
+    fun foo(){
+        <caret>
+    }
+}
+
+// ABSENT: $globalProperty
+// ABSENT: $property1
+// ABSENT: $property2
+// ABSENT: $property3
+// EXIST: { lookupString: "$property4", itemText: "$property4", tailText: null, typeText: "String" }

idea/testData/completion/basic/common/BackingFields2.kt

@@ -0,0 +1,4 @@
+var globalProperty = "abc"
+    get() = <caret>
+
+// EXIST: $globalProperty

idea/testData/completion/basic/common/BackingFields3.kt

@@ -0,0 +1,11 @@
+class C {
+    var property = "abc"
+        get() = $property + 1
+}
+
+
+fun foo(c: C){
+    c.<caret>
+}
+
+// ABSENT: $property

idea/testData/completion/basic/common/BackingFields4.kt

@@ -0,0 +1,10 @@
+class C {
+    var property = "abc"
+        get() = $property + 1
+
+    fun foo() {
+        this.<caret>
+    }
+}
+
+// EXIST: $property

idea/testData/completion/basic/common/BackingFields5.kt

@@ -0,0 +1,15 @@
+class C {
+    var property1 = "abc"
+        get() = $property1 + 1
+    var property2 = "abc"
+        get() = $property2 + 1
+
+    fun foo(){
+        $<caret>
+    }
+}
+
+// EXIST: $property1
+// EXIST: $property2
+// ABSENT: property1
+// ABSENT: property2

idea/testData/completion/basic/common/BackingFields6.kt

@@ -0,0 +1,13 @@
+class C {
+    var aProperty = "abc"
+        get() {}
+    var bProperty = "abc"
+        get() {}
+
+    fun foo(){
+        $a<caret>
+    }
+}
+
+// EXIST: $aProperty
+// ABSENT: $bProperty

idea/testData/completion/basic/common/BackingFieldsInStringTemplate.kt

@@ -0,0 +1,15 @@
+class C {
+    var property1 = "abc"
+        get() = $property1 + 1
+    var property2 = "abc"
+        get() = $property2 + 1
+
+    fun foo(){
+        "${$<caret>}"
+    }
+}
+
+// EXIST: $property1
+// EXIST: $property2
+// ABSENT: property1
+// ABSENT: property2

idea/testData/completion/smart/BackingFields.kt

@@ -0,0 +1,27 @@
+class C {
+    var property1 = "abc" // has backing field but accessors are default - no sense to show in completion
+
+    var property2: String // no backing field
+        get() = "abc"
+        set(value){}
+
+    var property3 = "abc" // has backing field and accessor
+        get() = $property3 + 1
+
+    var property4 = 1
+        get() = $property4 + 1
+
+    var property5: String? = null
+        get() = $property3 + 1
+
+    fun foo(): String {
+        return <caret>
+    }
+}
+
+// ABSENT: $property1
+// ABSENT: $property2
+// EXIST: $property3
+// ABSENT: $property4
+// EXIST: { itemText: "!! $property5" }
+// EXIST: { itemText: "?: $property5" }

idea/tests/org/jetbrains/kotlin/completion/JSBasicCompletionTestGenerated.java

@@ -79,6 +79,48 @@ public class JSBasicCompletionTestGenerated extends AbstractJSBasicCompletionTes
             JetTestUtils.assertAllTestsPresentByMetadata(this.getClass(), new File("idea/testData/completion/basic/common"), Pattern.compile("^(.+)\\.kt$"), true);
         }
 
+        @TestMetadata("BackingFields1.kt")
+        public void testBackingFields1() throws Exception {
+            String fileName = JetTestUtils.navigationMetadata("idea/testData/completion/basic/common/BackingFields1.kt");
+            doTest(fileName);
+        }
+
+        @TestMetadata("BackingFields2.kt")
+        public void testBackingFields2() throws Exception {
+            String fileName = JetTestUtils.navigationMetadata("idea/testData/completion/basic/common/BackingFields2.kt");
+            doTest(fileName);
+        }
+
+        @TestMetadata("BackingFields3.kt")
+        public void testBackingFields3() throws Exception {
+            String fileName = JetTestUtils.navigationMetadata("idea/testData/completion/basic/common/BackingFields3.kt");
+            doTest(fileName);
+        }
+
+        @TestMetadata("BackingFields4.kt")
+        public void testBackingFields4() throws Exception {
+            String fileName = JetTestUtils.navigationMetadata("idea/testData/completion/basic/common/BackingFields4.kt");
+            doTest(fileName);
+        }
+
+        @TestMetadata("BackingFields5.kt")
+        public void testBackingFields5() throws Exception {
+            String fileName = JetTestUtils.navigationMetadata("idea/testData/completion/basic/common/BackingFields5.kt");
+            doTest(fileName);
+        }
+
+        @TestMetadata("BackingFields6.kt")
+        public void testBackingFields6() throws Exception {
+            String fileName = JetTestUtils.navigationMetadata("idea/testData/completion/basic/common/BackingFields6.kt");
+            doTest(fileName);
+        }
+
+        @TestMetadata("BackingFieldsInStringTemplate.kt")
+        public void testBackingFieldsInStringTemplate() throws Exception {
+            String fileName = JetTestUtils.navigationMetadata("idea/testData/completion/basic/common/BackingFieldsInStringTemplate.kt");
+            doTest(fileName);
+        }
+
         @TestMetadata("BasicAny.kt")
         public void testBasicAny() throws Exception {
             String fileName = JetTestUtils.navigationMetadata("idea/testData/completion/basic/common/BasicAny.kt");

idea/tests/org/jetbrains/kotlin/completion/JvmBasicCompletionTestGenerated.java

@@ -79,6 +79,48 @@ public class JvmBasicCompletionTestGenerated extends AbstractJvmBasicCompletionT
             JetTestUtils.assertAllTestsPresentByMetadata(this.getClass(), new File("idea/testData/completion/basic/common"), Pattern.compile("^(.+)\\.kt$"), true);
         }
 
+        @TestMetadata("BackingFields1.kt")
+        public void testBackingFields1() throws Exception {
+            String fileName = JetTestUtils.navigationMetadata("idea/testData/completion/basic/common/BackingFields1.kt");
+            doTest(fileName);
+        }
+
+        @TestMetadata("BackingFields2.kt")
+        public void testBackingFields2() throws Exception {
+            String fileName = JetTestUtils.navigationMetadata("idea/testData/completion/basic/common/BackingFields2.kt");
+            doTest(fileName);
+        }
+
+        @TestMetadata("BackingFields3.kt")
+        public void testBackingFields3() throws Exception {
+            String fileName = JetTestUtils.navigationMetadata("idea/testData/completion/basic/common/BackingFields3.kt");
+            doTest(fileName);
+        }
+
+        @TestMetadata("BackingFields4.kt")
+        public void testBackingFields4() throws Exception {
+            String fileName = JetTestUtils.navigationMetadata("idea/testData/completion/basic/common/BackingFields4.kt");
+            doTest(fileName);
+        }
+
+        @TestMetadata("BackingFields5.kt")
+        public void testBackingFields5() throws Exception {
+            String fileName = JetTestUtils.navigationMetadata("idea/testData/completion/basic/common/BackingFields5.kt");
+            doTest(fileName);
+        }
+
+        @TestMetadata("BackingFields6.kt")
+        public void testBackingFields6() throws Exception {
+            String fileName = JetTestUtils.navigationMetadata("idea/testData/completion/basic/common/BackingFields6.kt");
+            doTest(fileName);
+        }
+
+        @TestMetadata("BackingFieldsInStringTemplate.kt")
+        public void testBackingFieldsInStringTemplate() throws Exception {
+            String fileName = JetTestUtils.navigationMetadata("idea/testData/completion/basic/common/BackingFieldsInStringTemplate.kt");
+            doTest(fileName);
+        }
+
         @TestMetadata("BasicAny.kt")
         public void testBasicAny() throws Exception {
             String fileName = JetTestUtils.navigationMetadata("idea/testData/completion/basic/common/BasicAny.kt");

idea/tests/org/jetbrains/kotlin/completion/JvmSmartCompletionTestGenerated.java

@@ -66,6 +66,12 @@ public class JvmSmartCompletionTestGenerated extends AbstractJvmSmartCompletionT
         doTest(fileName);
     }
 
+    @TestMetadata("BackingFields.kt")
+    public void testBackingFields() throws Exception {
+        String fileName = JetTestUtils.navigationMetadata("idea/testData/completion/smart/BackingFields.kt");
+        doTest(fileName);
+    }
+
     @TestMetadata("BeforeArgumentWithBinaryOperation.kt")
     public void testBeforeArgumentWithBinaryOperation() throws Exception {
         String fileName = JetTestUtils.navigationMetadata("idea/testData/completion/smart/BeforeArgumentWithBinaryOperation.kt");