Avoid caching state in ScriptModuleInfos

This led to caching stale dependencies

 #KT-17770 Fixed

idea/idea-analysis/src/org/jetbrains/kotlin/idea/caches/resolve/KotlinCacheServiceImpl.kt

@@ -80,8 +80,7 @@ class KotlinCacheServiceImpl(val project: Project) : KotlinCacheService {
     private val facadesForScriptDependencies: SLRUCache<ScriptModuleInfo, ProjectResolutionFacade> =
             object : SLRUCache<ScriptModuleInfo, ProjectResolutionFacade>(2, 3) {
                 override fun createValue(scriptModuleInfo: ScriptModuleInfo?): ProjectResolutionFacade {
-                    val dependencies = scriptModuleInfo?.externalDependencies
-                    return createFacadeForScriptDependencies(ScriptDependenciesModuleInfo(project, dependencies, scriptModuleInfo))
+                    return createFacadeForScriptDependencies(ScriptDependenciesModuleInfo(project, scriptModuleInfo))
                 }
             }
 
@@ -93,7 +92,7 @@ class KotlinCacheServiceImpl(val project: Project) : KotlinCacheService {
             dependenciesModuleInfo: ScriptDependenciesModuleInfo,
             syntheticFiles: Collection<KtFile> = listOf()
     ): ProjectResolutionFacade {
-        val sdk = findJdk(dependenciesModuleInfo.dependencies, project)
+        val sdk = findJdk(dependenciesModuleInfo.scriptModuleInfo?.externalDependencies, project)
         val platform = JvmPlatform // TODO: Js scripts?
         val facadeKey = PlatformAnalysisSettings(platform, sdk, true)
         val sdkFacade = GlobalFacade(facadeKey).facadeForSdk

idea/idea-analysis/src/org/jetbrains/kotlin/idea/caches/resolve/ScriptModuleInfos.kt

@@ -41,9 +41,8 @@ data class ScriptModuleInfo(val project: Project, val scriptFile: VirtualFile,
     override val moduleOrigin: ModuleOrigin
         get() = ModuleOrigin.OTHER
 
-    val externalDependencies by lazy {
-        KotlinScriptExternalImportsProvider.getInstance(project)?.getExternalImports(scriptFile)
-    }
+    val externalDependencies: KotlinScriptExternalDependencies?
+        get() = KotlinScriptExternalImportsProvider.getInstance(project)?.getExternalImports(scriptFile)
 
     override val name: Name = Name.special("<script ${scriptFile.name} ${scriptDefinition.name}>")
 
@@ -51,8 +50,7 @@ data class ScriptModuleInfo(val project: Project, val scriptFile: VirtualFile,
 
     override fun dependencies(): List<IdeaModuleInfo> {
         return listOf(
-                this,
-                ScriptDependenciesModuleInfo(project, externalDependencies, this)
+                this, ScriptDependenciesModuleInfo(project, this)
         ) + sdkDependencies(externalDependencies, project)
     }
 }
@@ -72,26 +70,26 @@ fun findJdk(dependencies: KotlinScriptExternalDependencies?, project: Project):
 
 class ScriptDependenciesModuleInfo(
         val project: Project,
-        val dependencies: KotlinScriptExternalDependencies?,
         val scriptModuleInfo: ScriptModuleInfo?
-): IdeaModuleInfo, BinaryModuleInfo {
-    override fun dependencies() = (listOf(this) + sdkDependencies(dependencies, project))
+) : IdeaModuleInfo, BinaryModuleInfo {
+    override fun dependencies() = (listOf(this) + sdkDependencies(scriptModuleInfo?.externalDependencies, project))
 
     override val name = Name.special("<Script dependencies>")
 
     override fun contentScope(): GlobalSearchScope {
-        if (dependencies == null) {
+        if (scriptModuleInfo == null) {
             // we do not know which scripts these dependencies are
             return KotlinSourceFilterScope.libraryClassFiles(
                     KotlinScriptConfigurationManager.getInstance(project).getAllScriptsClasspathScope(), project
             )
         }
-        val classpath = KotlinScriptConfigurationManager.toVfsRoots(dependencies.classpath)
+        val roots = scriptModuleInfo.externalDependencies?.classpath ?: emptyList()
+        val classpath = KotlinScriptConfigurationManager.toVfsRoots(roots)
         // TODO: this is not very efficient because KotlinSourceFilterScope already checks if the files are in scripts classpath
         return KotlinSourceFilterScope.libraryClassFiles(NonClasspathDirectoriesScope(classpath), project)
     }
 
-    // NOTE: intentionally not taking dependencies into account
+    // NOTE: intentionally not taking corresponding script info into account
     // otherwise there is no way to implement getModuleInfo
     override fun hashCode() = project.hashCode()
     override fun equals(other: Any?): Boolean = other is ScriptDependenciesModuleInfo && this.project == other.project
@@ -105,11 +103,11 @@ class ScriptDependenciesModuleInfo(
 
 data class ScriptDependenciesSourceModuleInfo(
         val project: Project
-): IdeaModuleInfo, SourceForBinaryModuleInfo {
+) : IdeaModuleInfo, SourceForBinaryModuleInfo {
     override val name = Name.special("<Source for script dependencies>")
 
     override val binariesModuleInfo: ScriptDependenciesModuleInfo
-        get() = ScriptDependenciesModuleInfo(project, null, null)
+        get() = ScriptDependenciesModuleInfo(project, null)
 
     override fun sourceScope(): GlobalSearchScope = KotlinSourceFilterScope.librarySources(
             KotlinScriptConfigurationManager.getInstance(project).getAllLibrarySourcesScope(), project

idea/idea-analysis/src/org/jetbrains/kotlin/idea/caches/resolve/getModuleInfo.kt

@@ -142,7 +142,7 @@ private fun getModuleInfoByVirtualFile(project: Project, virtualFile: VirtualFil
             return ScriptDependenciesSourceModuleInfo(project)
         }
         else {
-            return ScriptDependenciesModuleInfo(project, null, null)
+            return ScriptDependenciesModuleInfo(project, null)
         }
     }
     if (!isBinary && virtualFile in scriptConfigurationManager.getAllLibrarySourcesScope()) {