refactor: optional ult provider

Author: voqaldev

marker/js-marker/src/main/kotlin/spp/jetbrains/marker/js/JavascriptLanguageProvider.kt

@@ -56,7 +56,7 @@ class JavascriptLanguageProvider : LanguageProvider {
         val endpointDetector = AggregateEndpointDetector(
             project,
             mutableListOf<EndpointDetector<*>>().apply {
-                addAll(getUltimateProvider(project).getEndpointDetectors(project))
+                getUltimateProvider(project)?.let { addAll(it.getEndpointDetectors(project)) }
                 add(JavascriptEndpointDetector(project))
             }
         )

marker/jvm-marker/src/main/kotlin/spp/jetbrains/marker/jvm/JVMLanguageProvider.kt

@@ -65,7 +65,7 @@ class JVMLanguageProvider : LanguageProvider {
         val endpointDetector = AggregateEndpointDetector(
             project,
             mutableListOf<EndpointDetector<*>>().apply {
-                addAll(getUltimateProvider(project).getEndpointDetectors(project))
+                getUltimateProvider(project)?.let { addAll(it.getEndpointDetectors(project)) }
                 add(JVMEndpointDetector(project))
             }
         )

marker/py-marker/src/main/kotlin/spp/jetbrains/marker/py/PythonLanguageProvider.kt

@@ -55,7 +55,7 @@ class PythonLanguageProvider : LanguageProvider {
         val endpointDetector = AggregateEndpointDetector(
             project,
             mutableListOf<EndpointDetector<*>>().apply {
-                addAll(getUltimateProvider(project).getEndpointDetectors(project))
+                getUltimateProvider(project)?.let { addAll(it.getEndpointDetectors(project)) }
                 add(PythonEndpointDetector(project))
             }
         )

marker/src/main/kotlin/spp/jetbrains/marker/LanguageProvider.kt

@@ -23,7 +23,7 @@ interface LanguageProvider {
     fun canSetup(): Boolean
     fun setup(project: Project)
 
-    fun getUltimateProvider(project: Project): UltimateProvider {
+    fun getUltimateProvider(project: Project): UltimateProvider? {
         val ultimateProvider: UltimateProvider?
         val originalClassLoader = Thread.currentThread().contextClassLoader
         try {
@@ -32,7 +32,7 @@ interface LanguageProvider {
         } finally {
             Thread.currentThread().contextClassLoader = originalClassLoader
         }
-        return ultimateProvider!!
+        return ultimateProvider
     }
 
     fun classExists(className: String): Boolean {