Restore support for 173 branch

idea/idea-analysis/src/org/jetbrains/kotlin/idea/caches/KotlinShortNamesCache.kt

@@ -23,7 +23,6 @@ import com.intellij.psi.PsiClass
 import com.intellij.psi.PsiField
 import com.intellij.psi.PsiMethod
 import com.intellij.psi.search.GlobalSearchScope
-import com.intellij.psi.search.PsiShortNamesCache
 import com.intellij.psi.stubs.StubIndex
 import com.intellij.util.ArrayUtil
 import com.intellij.util.Processor
@@ -46,7 +45,7 @@ import org.jetbrains.kotlin.psi.KtFile
 import org.jetbrains.kotlin.psi.KtNamedDeclaration
 import org.jetbrains.kotlin.psi.KtNamedFunction
 
-class KotlinShortNamesCache(private val project: Project) : PsiShortNamesCache() {
+class KotlinShortNamesCache(private val project: Project) : PsiShortNamesCacheWrapper() {
     //region Classes
 
     override fun processAllClassNames(processor: Processor<String>): Boolean {

idea/idea-analysis/src/org/jetbrains/kotlin/idea/caches/PsiShortNamesCacheCompatibility.kt

@@ -0,0 +1,29 @@
+/*
+ * Copyright 2010-2018 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license
+ * that can be found in the license/LICENSE.txt file.
+ */
+
+package org.jetbrains.kotlin.idea.caches
+
+import com.intellij.psi.search.PsiShortNamesCache
+
+typealias PsiShortNamesCacheWrapper = PsiShortNamesCache
+
+/*
+// Need to implement deprecated methods. Should be removed after abandoning 173 and AS 3.1 branch.
+// BUNCH: 181
+@Suppress("OverridingDeprecatedMember", "DEPRECATION")
+abstract class PsiShortNamesCacheCompatibility : PsiShortNamesCache() {
+    override fun getAllClassNames(dest: com.intellij.util.containers.HashSet<String>) {
+        processAllClassNames(com.intellij.util.CommonProcessors.CollectProcessor(dest))
+    }
+
+    override fun getAllMethodNames(set: com.intellij.util.containers.HashSet<String>) {
+        java.util.Collections.addAll(set, *allMethodNames)
+    }
+
+    override fun getAllFieldNames(set: com.intellij.util.containers.HashSet<String>) {
+        java.util.Collections.addAll(set, *allFieldNames)
+    }
+}
+*/

idea/idea-analysis/src/org/jetbrains/kotlin/idea/caches/PsiShortNamesCacheCompatibility.kt.173

@@ -0,0 +1,27 @@
+/*
+ * Copyright 2010-2018 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license
+ * that can be found in the license/LICENSE.txt file.
+ */
+
+package org.jetbrains.kotlin.idea.caches
+
+import com.intellij.psi.search.PsiShortNamesCache
+
+typealias PsiShortNamesCacheWrapper = PsiShortNamesCacheCompatibility
+
+// Need to implement deprecated methods. Should be removed after abandoning 173 and AS 3.1 branch.
+// BUNCH: 181
+@Suppress("OverridingDeprecatedMember", "DEPRECATION")
+abstract class PsiShortNamesCacheCompatibility : PsiShortNamesCache() {
+    override fun getAllClassNames(dest: com.intellij.util.containers.HashSet<String>) {
+        processAllClassNames(com.intellij.util.CommonProcessors.CollectProcessor(dest))
+    }
+
+    override fun getAllMethodNames(set: com.intellij.util.containers.HashSet<String>) {
+        java.util.Collections.addAll(set, *allMethodNames)
+    }
+
+    override fun getAllFieldNames(set: com.intellij.util.containers.HashSet<String>) {
+        java.util.Collections.addAll(set, *allFieldNames)
+    }
+}