Changes in the compiler needed to run KAPT 4 (KT-51982)

compiler/frontend.common.jvm/src/org/jetbrains/kotlin/fir/extensions/FirAnalysisHandlerExtension.kt

@@ -5,6 +5,7 @@
 
 package org.jetbrains.kotlin.fir.extensions
 
+import com.intellij.openapi.project.Project
 import org.jetbrains.kotlin.config.CompilerConfiguration
 import org.jetbrains.kotlin.extensions.ProjectExtensionDescriptor
 
@@ -13,7 +14,22 @@ abstract class FirAnalysisHandlerExtension {
     companion object : ProjectExtensionDescriptor<FirAnalysisHandlerExtension>(
         "org.jetbrains.kotlin.fir.firAnalyzeCompleteHandlerExtension",
         FirAnalysisHandlerExtension::class.java
-    )
+    ) {
+        /**
+         * Applies [FirAnalysisHandlerExtension] instances to a project
+         * @receiver the project to analyze
+         * @param configuration compiler configuration
+         * @return [null] if no applicable extensions were found, [true] if all applicable extensions returned [true] from [doAnalysis],
+         * [false] if any applicable extension returned [false]
+         *
+         * @see FirAnalysisHandlerExtension.isApplicable
+         * @see FirAnalysisHandlerExtension.doAnalysis
+         */
+        fun analyze(project: Project, configuration: CompilerConfiguration): Boolean? {
+            val extensions = FirAnalysisHandlerExtension.getInstances(project).filter { it.isApplicable(configuration) }
+            return if (extensions.isEmpty()) null else extensions.all { it.doAnalysis(configuration) }
+        }
+    }
 
     /**
      * Checks whether [doAnalysis] should be called
@@ -25,7 +41,8 @@ abstract class FirAnalysisHandlerExtension {
     /**
      * Performs code analysis
      * @param configuration compiler configuration
-     * @return true if analysis completed successfully. There can be different causes of failure, an incorrect configuration for example.
+     * @return [true] if analysis completed successfully, [false] otherwise.
+     * There can be different causes of failure, an incorrect configuration for example.
      * A failure means that there's no reason to continue building the project.
      */
     abstract fun doAnalysis(configuration: CompilerConfiguration): Boolean