Add extension for kotlin collections support

idea/idea-jvm/src/com/intellij/debugger/streams/kotlin/lib/KotlinCollectionLibrarySupport.kt

@@ -0,0 +1,12 @@
+package com.intellij.debugger.streams.kotlin.lib
+
+import com.intellij.debugger.streams.lib.impl.LibrarySupportBase
+
+/**
+ * @author Vitaliy.Bibaev
+ */
+class KotlinCollectionLibrarySupport : LibrarySupportBase() {
+  init {
+    TODO("add supported operations")
+  }
+}

idea/idea-jvm/src/com/intellij/debugger/streams/kotlin/lib/KotlinCollectionSupportProvider.kt

@@ -1,9 +1,13 @@
 // Copyright 2000-2017 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
 package com.intellij.debugger.streams.kotlin.lib
 
+import com.intellij.debugger.streams.kotlin.psi.impl.KotlinCollectionChainBuilder
+import com.intellij.debugger.streams.kotlin.trace.dsl.KotlinStatementFactory
+import com.intellij.debugger.streams.kotlin.trace.impl.KotlinTraceExpressionBuilder
 import com.intellij.debugger.streams.lib.LibrarySupport
 import com.intellij.debugger.streams.lib.LibrarySupportProvider
 import com.intellij.debugger.streams.trace.TraceExpressionBuilder
+import com.intellij.debugger.streams.trace.dsl.impl.DslImpl
 import com.intellij.debugger.streams.wrapper.StreamChainBuilder
 import com.intellij.openapi.project.Project
 
@@ -11,17 +15,18 @@ import com.intellij.openapi.project.Project
  * @author Vitaliy.Bibaev
  */
 class KotlinCollectionSupportProvider : LibrarySupportProvider {
+  private companion object {
+    val builder: StreamChainBuilder = KotlinCollectionChainBuilder()
+    val support: LibrarySupport = KotlinCollectionLibrarySupport()
+    val dsl = DslImpl(KotlinStatementFactory())
+  }
+
   override fun getLanguageId(): String = LibraryUtil.KOTLIN_LANGUAGE_ID
 
-  override fun getChainBuilder(): StreamChainBuilder {
-    TODO("not implemented") //To change body of created functions use File | Settings | File Templates.
-  }
+  override fun getChainBuilder(): StreamChainBuilder = builder
 
-  override fun getLibrarySupport(): LibrarySupport {
-    TODO("not implemented") //To change body of created functions use File | Settings | File Templates.
-  }
+  override fun getLibrarySupport(): LibrarySupport = support
 
-  override fun getExpressionBuilder(p0: Project): TraceExpressionBuilder {
-    TODO("not implemented") //To change body of created functions use File | Settings | File Templates.
-  }
+  override fun getExpressionBuilder(project: Project): TraceExpressionBuilder
+      = KotlinTraceExpressionBuilder(dsl, support.createHandlerFactory(dsl))
 }

idea/idea-jvm/src/com/intellij/debugger/streams/kotlin/psi/impl/KotlinCollectionChainBuilder.kt

@@ -1,14 +1,36 @@
 // Copyright 2000-2017 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
 package com.intellij.debugger.streams.kotlin.psi.impl
 
+import org.jetbrains.kotlin.psi.KtCallExpression
+
 /**
  * @author Vitaliy.Bibaev
  */
 class KotlinCollectionChainBuilder : KotlinChainBuilderBase(TODO("transmit here a correct transformer")) {
-  override val existenceChecker: ExistenceChecker
-    get() = TODO("not implemented") //To change initializer of created properties use File | Settings | File Templates.
+  override val existenceChecker: ExistenceChecker = object : ExistenceChecker() {
+    override fun visitCallExpression(expression: KtCallExpression) {
+      if (isFound()) return
+      if (isCollectionTransformationCall(expression)) {
+        fireElementFound()
+      } else {
+        super.visitCallExpression(expression)
+      }
+    }
 
-  override fun createChainsBuilder(): ChainBuilder {
-    TODO("not implemented") //To change body of created functions use File | Settings | File Templates.
+    private fun isCollectionTransformationCall(expression: KtCallExpression): Boolean {
+      TODO("determine that expression is a collection transformation")
+    }
+  }
+
+  override fun createChainsBuilder(): ChainBuilder = object : ChainBuilder() {
+    private val previousCalls: MutableMap<KtCallExpression, KtCallExpression> = mutableMapOf()
+
+    override fun visitCallExpression(expression: KtCallExpression) {
+      super.visitCallExpression(expression)
+    }
+
+    override fun chains(): List<List<KtCallExpression>> {
+      return emptyList()
+    }
   }
 }