Optimize memory footprint for PartialBodyResolveFilter

There is a single PartialBodyResolveFilter instance per module
and each of them were containing just the same sets of available
in project Nothing-typed functions (including duplicating String instances),
in case of Kotlin project it might sum up to 27M of heap.

The solution is to share the global sets between all modules in a project

idea/ide-common/src/org/jetbrains/kotlin/resolve/lazy/PartialBodyResolveFilter.kt

@@ -32,14 +32,15 @@ import java.util.*
 class PartialBodyResolveFilter(
         elementsToResolve: Collection<KtElement>,
         private val declaration: KtDeclaration,
-        probablyNothingCallableNames: ProbablyNothingCallableNames,
         forCompletion: Boolean
 ) : StatementFilter() {
 
     private val statementMarks = StatementMarks()
 
-    private val nothingFunctionNames = HashSet(probablyNothingCallableNames.functionNames())
-    private val nothingVariableNames = HashSet(probablyNothingCallableNames.propertyNames())
+    private val globalProbablyNothingCallableNames = ProbablyNothingCallableNames.getInstance(declaration.project)
+
+    private val contextNothingFunctionNames = HashSet<String>()
+    private val contextNothingVariableNames = HashSet<String>()
 
     override val filter: ((KtExpression) -> Boolean)? = { statementMarks.statementMark(it) != MarkLevel.NONE }
 
@@ -55,10 +56,10 @@ class PartialBodyResolveFilter(
                 val name = declaration.name
                 if (name != null) {
                     if (declaration is KtNamedFunction) {
-                        nothingFunctionNames.add(name)
+                        contextNothingFunctionNames.add(name)
                     }
                     else {
-                        nothingVariableNames.add(name)
+                        contextNothingVariableNames.add(name)
                     }
                 }
             }
@@ -399,7 +400,7 @@ class PartialBodyResolveFilter(
 
             override fun visitCallExpression(expression: KtCallExpression) {
                 val name = (expression.calleeExpression as? KtSimpleNameExpression)?.getReferencedName()
-                if (name != null && name in nothingFunctionNames) {
+                if (name != null && (name in globalProbablyNothingCallableNames.functionNames() || name in contextNothingFunctionNames)) {
                     result.add(expression)
                 }
                 super.visitCallExpression(expression)
@@ -407,7 +408,7 @@ class PartialBodyResolveFilter(
 
             override fun visitSimpleNameExpression(expression: KtSimpleNameExpression) {
                 val name = expression.getReferencedName()
-                if (name in nothingVariableNames) {
+                if (name in globalProbablyNothingCallableNames.propertyNames() || name in contextNothingVariableNames) {
                     result.add(expression)
                 }
             }

idea/ide-common/src/org/jetbrains/kotlin/resolve/lazy/ProbablyNothingCallableNames.kt

@@ -16,7 +16,14 @@
 
 package org.jetbrains.kotlin.resolve.lazy
 
+import com.intellij.openapi.components.ServiceManager
+import com.intellij.openapi.project.Project
+
 interface ProbablyNothingCallableNames {
     fun functionNames(): Collection<String>
     fun propertyNames(): Collection<String>
+
+    companion object {
+        fun getInstance(project: Project) = ServiceManager.getService(project, ProbablyNothingCallableNames::class.java)!!
+    }
 }

idea/idea-analysis/src/org/jetbrains/kotlin/idea/project/ProbablyNothingCallableNamesImpl.kt

@@ -0,0 +1,33 @@
+/*
+ * 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.project
+
+import com.intellij.openapi.project.Project
+import com.intellij.psi.util.CachedValueProvider
+import com.intellij.psi.util.CachedValuesManager
+import com.intellij.psi.util.PsiModificationTracker
+import com.intellij.util.containers.SLRUCache
+import org.jetbrains.kotlin.idea.caches.project.getModuleInfo
+import org.jetbrains.kotlin.idea.caches.resolve.PerFileAnalysisCache
+import org.jetbrains.kotlin.idea.stubindex.KotlinProbablyNothingFunctionShortNameIndex
+import org.jetbrains.kotlin.idea.stubindex.KotlinProbablyNothingPropertyShortNameIndex
+import org.jetbrains.kotlin.psi.KtFile
+import org.jetbrains.kotlin.resolve.lazy.ProbablyNothingCallableNames
+
+class ProbablyNothingCallableNamesImpl(project: Project) : ProbablyNothingCallableNames {
+    private val functionNames = createCachedValue(project) { KotlinProbablyNothingFunctionShortNameIndex.getInstance().getAllKeys(project) }
+    private val propertyNames = createCachedValue(project) { KotlinProbablyNothingPropertyShortNameIndex.getInstance().getAllKeys(project) }
+
+    override fun functionNames(): Collection<String> = functionNames.value
+    override fun propertyNames(): Collection<String> = propertyNames.value
+}
+
+private inline fun createCachedValue(project: Project, crossinline names: () -> Collection<String>) =
+    CachedValuesManager.getManager(project).createCachedValue(
+        {
+            CachedValueProvider.Result.create(names(), PsiModificationTracker.OUT_OF_CODE_BLOCK_MODIFICATION_COUNT)
+        }, false
+    )

idea/idea-analysis/src/org/jetbrains/kotlin/idea/project/ResolveElementCache.kt

@@ -111,14 +111,6 @@ class ResolveElementCache(
             false
         )
 
-
-    private fun probablyNothingCallableNames(): ProbablyNothingCallableNames {
-        return object : ProbablyNothingCallableNames {
-            override fun functionNames() = KotlinProbablyNothingFunctionShortNameIndex.getInstance().getAllKeys(project)
-            override fun propertyNames() = KotlinProbablyNothingPropertyShortNameIndex.getInstance().getAllKeys(project)
-        }
-    }
-
     override fun resolveFunctionBody(function: KtNamedFunction) = getElementsAdditionalResolve(function, null, BodyResolveMode.FULL)
 
     fun resolvePrimaryConstructorParametersDefaultValues(ktClass: KtClass): BindingContext {
@@ -310,7 +302,6 @@ class ResolveElementCache(
                 statementFilterUsed = PartialBodyResolveFilter(
                     contextElements!!,
                     resolveElement as KtDeclaration,
-                    probablyNothingCallableNames(),
                     bodyResolveMode == BodyResolveMode.PARTIAL_FOR_COMPLETION
                 )
             }

idea/src/META-INF/plugin.xml

@@ -349,6 +349,9 @@
     <projectService serviceInterface="org.jetbrains.kotlin.idea.core.script.ScriptModificationListener"
                     serviceImplementation="org.jetbrains.kotlin.idea.core.script.ScriptModificationListener"/>
 
+    <projectService serviceInterface="org.jetbrains.kotlin.resolve.lazy.ProbablyNothingCallableNames"
+                    serviceImplementation="org.jetbrains.kotlin.idea.project.ProbablyNothingCallableNamesImpl"/>
+
     <errorHandler implementation="org.jetbrains.kotlin.idea.reporter.KotlinReportSubmitter"/>
 
     <internalFileTemplate name="Kotlin File"/>
@@ -2691,7 +2694,7 @@
                      level="WARNING"
                      language="kotlin"
     />
-    
+
     <localInspection implementationClass="org.jetbrains.kotlin.idea.inspections.SortModifiersInspection"
                      displayName="Non-canonical modifier order"
                      groupPath="Kotlin"

idea/src/META-INF/plugin.xml.172

@@ -349,6 +349,9 @@
     <projectService serviceInterface="org.jetbrains.kotlin.idea.core.script.ScriptModificationListener"
                     serviceImplementation="org.jetbrains.kotlin.idea.core.script.ScriptModificationListener"/>
 
+    <projectService serviceInterface="org.jetbrains.kotlin.resolve.lazy.ProbablyNothingCallableNames"
+                    serviceImplementation="org.jetbrains.kotlin.idea.project.ProbablyNothingCallableNamesImpl"/>
+
     <errorHandler implementation="org.jetbrains.kotlin.idea.reporter.KotlinReportSubmitter"/>
 
     <internalFileTemplate name="Kotlin File"/>
@@ -2691,7 +2694,7 @@
                      level="WARNING"
                      language="kotlin"
     />
-    
+
     <localInspection implementationClass="org.jetbrains.kotlin.idea.inspections.SortModifiersInspection"
                      displayName="Non-canonical modifier order"
                      groupPath="Kotlin"

idea/src/META-INF/plugin.xml.173

@@ -349,6 +349,9 @@
     <projectService serviceInterface="org.jetbrains.kotlin.idea.core.script.ScriptModificationListener"
                     serviceImplementation="org.jetbrains.kotlin.idea.core.script.ScriptModificationListener"/>
 
+    <projectService serviceInterface="org.jetbrains.kotlin.resolve.lazy.ProbablyNothingCallableNames"
+                    serviceImplementation="org.jetbrains.kotlin.idea.project.ProbablyNothingCallableNamesImpl"/>
+
     <errorHandler implementation="org.jetbrains.kotlin.idea.reporter.KotlinReportSubmitter"/>
 
     <internalFileTemplate name="Kotlin File"/>
@@ -2692,7 +2695,7 @@
                      level="WARNING"
                      language="kotlin"
     />
-    
+
     <localInspection implementationClass="org.jetbrains.kotlin.idea.inspections.SortModifiersInspection"
                      displayName="Non-canonical modifier order"
                      groupPath="Kotlin"

idea/src/META-INF/plugin.xml.182

@@ -350,6 +350,9 @@
     <projectService serviceInterface="org.jetbrains.kotlin.idea.core.script.ScriptModificationListener"
                     serviceImplementation="org.jetbrains.kotlin.idea.core.script.ScriptModificationListener"/>
 
+    <projectService serviceInterface="org.jetbrains.kotlin.resolve.lazy.ProbablyNothingCallableNames"
+                    serviceImplementation="org.jetbrains.kotlin.idea.project.ProbablyNothingCallableNamesImpl"/>
+
     <errorHandler implementation="org.jetbrains.kotlin.idea.reporter.KotlinReportSubmitter"/>
 
     <internalFileTemplate name="Kotlin File"/>
@@ -2692,7 +2695,7 @@
                      level="WARNING"
                      language="kotlin"
     />
-    
+
     <localInspection implementationClass="org.jetbrains.kotlin.idea.inspections.SortModifiersInspection"
                      displayName="Non-canonical modifier order"
                      groupPath="Kotlin"

idea/src/META-INF/plugin.xml.as31

@@ -349,6 +349,9 @@
     <projectService serviceInterface="org.jetbrains.kotlin.idea.core.script.ScriptModificationListener"
                     serviceImplementation="org.jetbrains.kotlin.idea.core.script.ScriptModificationListener"/>
 
+    <projectService serviceInterface="org.jetbrains.kotlin.resolve.lazy.ProbablyNothingCallableNames"
+                    serviceImplementation="org.jetbrains.kotlin.idea.project.ProbablyNothingCallableNamesImpl"/>
+
     <errorHandler implementation="org.jetbrains.kotlin.idea.reporter.KotlinReportSubmitter"/>
 
     <internalFileTemplate name="Kotlin File"/>
@@ -2691,7 +2694,7 @@
                      level="WARNING"
                      language="kotlin"
     />
-    
+
     <localInspection implementationClass="org.jetbrains.kotlin.idea.inspections.SortModifiersInspection"
                      displayName="Non-canonical modifier order"
                      groupPath="Kotlin"

idea/src/META-INF/plugin.xml.as32

@@ -349,6 +349,9 @@
     <projectService serviceInterface="org.jetbrains.kotlin.idea.core.script.ScriptModificationListener"
                     serviceImplementation="org.jetbrains.kotlin.idea.core.script.ScriptModificationListener"/>
 
+    <projectService serviceInterface="org.jetbrains.kotlin.resolve.lazy.ProbablyNothingCallableNames"
+                    serviceImplementation="org.jetbrains.kotlin.idea.project.ProbablyNothingCallableNamesImpl"/>
+
     <errorHandler implementation="org.jetbrains.kotlin.idea.reporter.KotlinReportSubmitter"/>
 
     <internalFileTemplate name="Kotlin File"/>
@@ -2691,7 +2694,7 @@
                      level="WARNING"
                      language="kotlin"
     />
-    
+
     <localInspection implementationClass="org.jetbrains.kotlin.idea.inspections.SortModifiersInspection"
                      displayName="Non-canonical modifier order"
                      groupPath="Kotlin"