Kapt: Remove kapt1 support from Gradle and incremental compilation

compiler/incremental-compilation-impl/src/org/jetbrains/kotlin/annotation/AnnotationFileUpdater.kt

@@ -1,37 +0,0 @@
-/*
- * Copyright 2010-2016 JetBrains s.r.o.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package org.jetbrains.kotlin.annotation
-
-import org.jetbrains.kotlin.resolve.jvm.JvmClassName
-
-/**
- * Annotation file is generated by collecting annotated elements of generated files.
- * When compiling incrementally, the compiler generates only subset of all classes,
- * so after compilation annotation file contains only a subset of annotated elements,
- * which breaks the build.
- *
- * The workaround is to:
- * 1. backup old file before incremental compilation;
- * 2. after each iteration of IC:
- *  2.1 remove classes corresponding to dirty source files
- *  2.2 add annotations from newly generated annotations file
- */
-interface AnnotationFileUpdater {
-    fun updateAnnotations(outdatedClasses: Iterable<JvmClassName>)
-    fun revert()
-}
-

compiler/incremental-compilation-impl/src/org/jetbrains/kotlin/incremental/IncrementalJvmCompilerRunner.kt

@@ -22,7 +22,6 @@ import com.intellij.psi.PsiClass
 import com.intellij.psi.PsiFile
 import com.intellij.psi.PsiFileFactory
 import com.intellij.psi.PsiJavaFile
-import org.jetbrains.kotlin.annotation.AnnotationFileUpdater
 import org.jetbrains.kotlin.build.GeneratedFile
 import org.jetbrains.kotlin.build.GeneratedJvmClass
 import org.jetbrains.kotlin.build.JvmSourceRoot
@@ -103,7 +102,6 @@ class IncrementalJvmCompilerRunner(
         private val javaSourceRoots: Set<JvmSourceRoot>,
         cacheVersions: List<CacheVersion>,
         reporter: ICReporter,
-        private var kaptAnnotationsFileUpdater: AnnotationFileUpdater? = null,
         private val usePreciseJavaTracking: Boolean,
         private val buildHistoryFile: File,
         localStateDirs: Collection<File>,
@@ -311,28 +309,14 @@ class IncrementalJvmCompilerRunner(
     }
 
     override fun preBuildHook(args: K2JVMCompilerArguments, compilationMode: CompilationMode) {
-        when (compilationMode) {
-            is CompilationMode.Incremental -> {
-                val destinationDir = args.destinationAsFile
-                destinationDir.mkdirs()
-                args.classpathAsList = listOf(destinationDir) + args.classpathAsList
-            }
-            is CompilationMode.Rebuild -> {
-                // there is no point in updating annotation file since all files will be compiled anyway
-                kaptAnnotationsFileUpdater = null
-            }
+        if (compilationMode is CompilationMode.Incremental) {
+            val destinationDir = args.destinationAsFile
+            destinationDir.mkdirs()
+            args.classpathAsList = listOf(destinationDir) + args.classpathAsList
         }
     }
 
-    override fun postCompilationHook(exitCode: ExitCode) {
-        if (exitCode == ExitCode.OK) {
-            // TODO: Is it ok that argument always was an empty list?
-            kaptAnnotationsFileUpdater?.updateAnnotations(emptyList())
-        }
-        else {
-            kaptAnnotationsFileUpdater?.revert()
-        }
-    }
+    override fun postCompilationHook(exitCode: ExitCode) {}
 
     override fun updateCaches(
             services: Services,