add access to JcDatabase#features

Author: lehvolk

jacodb-api/src/main/kotlin/org/jacodb/api/Api.kt

@@ -132,7 +132,9 @@ interface JcDatabase : Closeable {
     suspend fun awaitBackgroundJobs()
     fun asyncAwaitBackgroundJobs() = GlobalScope.future { awaitBackgroundJobs() }
 
-    fun isInstalled(feature: JcFeature<*, *>): Boolean
+    fun isInstalled(feature: JcFeature<*, *>): Boolean = features.contains(feature)
+
+    val features: List<JcFeature<*, *>>
 }
 
 

jacodb-core/src/main/kotlin/org/jacodb/impl/FeaturesRegistry.kt

@@ -16,27 +16,21 @@
 
 package org.jacodb.impl
 
-import org.jacodb.api.ByteCodeIndexer
-import org.jacodb.api.ClassSource
-import org.jacodb.api.JcDatabase
-import org.jacodb.api.JcFeature
-import org.jacodb.api.JcSignal
-import org.jacodb.api.RegisteredLocation
+import kotlinx.collections.immutable.toPersistentList
+import org.jacodb.api.*
 import org.jacodb.impl.fs.fullAsmNode
 import java.io.Closeable
 
-class FeaturesRegistry(private val features: List<JcFeature<*, *>>) : Closeable {
+class FeaturesRegistry(features: List<JcFeature<*, *>>) : Closeable {
+
+    val features = features.toPersistentList()
 
     private lateinit var jcdb: JcDatabase
 
     fun bind(jcdb: JcDatabase) {
         this.jcdb = jcdb
     }
 
-    fun has(feature: JcFeature<*, *>): Boolean {
-        return features.contains(feature)
-    }
-
     fun index(location: RegisteredLocation, classes: List<ClassSource>) {
         features.forEach { feature ->
             feature.index(location, classes)
@@ -58,10 +52,6 @@ class FeaturesRegistry(private val features: List<JcFeature<*, *>>) : Closeable
         features.forEach { it.onSignal(signal.asJcSignal(jcdb)) }
     }
 
-    fun forEach(action: (JcDatabase, JcFeature<*, *>) -> Unit) {
-        features.forEach { action(jcdb, it) }
-    }
-
     override fun close() {
     }
 

jacodb-core/src/main/kotlin/org/jacodb/impl/JcDatabaseImpl.kt

@@ -197,9 +197,8 @@ class JcDatabaseImpl(
         backgroundJobs.values.joinAll()
     }
 
-    override fun isInstalled(feature: JcFeature<*, *>): Boolean {
-        return featureRegistry.has(feature)
-    }
+    override val features: List<JcFeature<*, *>>
+        get() = featureRegistry.features
 
     suspend fun afterStart() {
         hooks.forEach { it.afterStart() }

jacodb-core/src/test/java/org/jacodb/testing/JavaApiTest.java

@@ -72,5 +72,6 @@ public void jcdbOperations() throws ExecutionException, InterruptedException, IO
         System.out.println("asyncRebuildFeatures finished");
         instance.asyncAwaitBackgroundJobs().get();
         System.out.println("asyncAwaitBackgroundJobs finished");
+        instance.getFeatures();
     }
 }