Use non-blocking lazy values in completion

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

@@ -179,7 +179,7 @@ abstract class CompletionSession(protected val configuration: CompletionSessionC
     }
 
     // LookupElementsCollector instantiation is deferred because virtual call to createSorter uses data from derived classes
-    protected val collector: LookupElementsCollector by lazy {
+    protected val collector: LookupElementsCollector by lazy(LazyThreadSafetyMode.NONE) {
         LookupElementsCollector(prefixMatcher, parameters, resultSet, lookupElementFactory, createSorter())
     }
 
@@ -281,7 +281,7 @@ abstract class CompletionSession(protected val configuration: CompletionSessionC
         return context
     }
 
-    protected val referenceVariants: Collection<DeclarationDescriptor> by lazy {
+    protected val referenceVariants: Collection<DeclarationDescriptor> by lazy(LazyThreadSafetyMode.NONE) {
         if (descriptorKindFilter != null) {
             referenceVariantsHelper.getReferenceVariants(
                     nameExpression!!,

idea/idea-completion/src/org/jetbrains/kotlin/idea/completion/InsertHandlerProvider.kt

@@ -26,7 +26,7 @@ import org.jetbrains.kotlin.types.JetType
 import java.util.*
 
 class InsertHandlerProvider(expectedInfosCalculator: () -> Collection<ExpectedInfo>) {
-    private val expectedInfos by lazy { expectedInfosCalculator() }
+    private val expectedInfos by lazy(LazyThreadSafetyMode.NONE) { expectedInfosCalculator() }
 
     public fun insertHandler(descriptor: DeclarationDescriptor): InsertHandler<LookupElement> {
         return when (descriptor) {

idea/idea-completion/src/org/jetbrains/kotlin/idea/completion/LookupElementFactory.kt

@@ -56,7 +56,7 @@ class LookupElementFactory(
 ) {
     private val basicFactory = BasicLookupElementFactory(resolutionFacade.project, insertHandlerProvider)
 
-    private val functionTypeContextVariables by lazy {
+    private val functionTypeContextVariables by lazy(LazyThreadSafetyMode.NONE) {
         contextVariablesProvider().filter { KotlinBuiltIns.isFunctionOrExtensionFunctionType(it.type) }
     }
 

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

@@ -64,7 +64,7 @@ class SmartCompletion(
 
     public val expectedInfos: Collection<ExpectedInfo> = calcExpectedInfos(expressionWithType)
 
-    public val smartCastCalculator: SmartCastCalculator by lazy {
+    public val smartCastCalculator: SmartCastCalculator by lazy(LazyThreadSafetyMode.NONE) {
         SmartCastCalculator(bindingContext, resolutionFacade.moduleDescriptor, expression)
     }
 
@@ -86,7 +86,7 @@ class SmartCompletion(
         return postProcessedItems to postProcessedSearcher
     }
 
-    public val descriptorsToSkip: Set<DeclarationDescriptor> by lazy<Set<DeclarationDescriptor>> {
+    public val descriptorsToSkip: Set<DeclarationDescriptor> by lazy<Set<DeclarationDescriptor>>(LazyThreadSafetyMode.NONE) {
         val parent = expressionWithType.getParent()
         when (parent) {
             is JetBinaryExpression -> {

idea/idea-completion/src/org/jetbrains/kotlin/idea/completion/smart/SmartCompletionSession.kt

@@ -38,7 +38,7 @@ class SmartCompletionSession(configuration: CompletionSessionConfiguration, para
     // we do not include SAM-constructors because they are handled separately and adding them requires iterating of java classes
     override val descriptorKindFilter = DescriptorKindFilter.VALUES exclude SamConstructorDescriptorKindExclude
 
-    private val smartCompletion by lazy {
+    private val smartCompletion by lazy(LazyThreadSafetyMode.NONE) {
         expression?.let {
             SmartCompletion(it, resolutionFacade,
                             bindingContext, isVisibleFilter, prefixMatcher, originalSearchScope,