| /* |
| * Copyright 2017 The Bazel Authors. All rights reserved. |
| * |
| * 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 com.google.idea.blaze.scala.run.producers; |
| |
| import com.google.common.collect.ImmutableList; |
| import com.google.common.collect.Iterables; |
| import com.google.idea.blaze.base.command.BlazeCommandName; |
| import com.google.idea.blaze.base.ideinfo.TargetIdeInfo; |
| import com.google.idea.blaze.base.model.BlazeProjectData; |
| import com.google.idea.blaze.base.model.primitives.Kind; |
| import com.google.idea.blaze.base.run.BlazeCommandRunConfiguration; |
| import com.google.idea.blaze.base.run.BlazeCommandRunConfigurationType; |
| import com.google.idea.blaze.base.run.producers.BlazeRunConfigurationProducer; |
| import com.google.idea.blaze.base.run.state.BlazeCommandRunConfigurationCommonState; |
| import com.google.idea.blaze.base.run.testmap.FilteredTargetMap; |
| import com.google.idea.blaze.base.sync.SyncCache; |
| import com.google.idea.blaze.java.run.RunUtil; |
| import com.intellij.execution.JavaExecutionUtil; |
| import com.intellij.execution.Location; |
| import com.intellij.execution.actions.ConfigurationContext; |
| import com.intellij.openapi.project.Project; |
| import com.intellij.openapi.util.Ref; |
| import com.intellij.psi.PsiClass; |
| import com.intellij.psi.PsiElement; |
| import com.intellij.psi.PsiMethod; |
| import java.io.File; |
| import java.util.Collection; |
| import java.util.Objects; |
| import javax.annotation.Nullable; |
| import org.jetbrains.plugins.scala.lang.psi.api.ScalaFile; |
| import org.jetbrains.plugins.scala.lang.psi.api.toplevel.typedef.ScObject; |
| import org.jetbrains.plugins.scala.runner.ScalaMainMethodUtil; |
| import scala.Option; |
| |
| /** Creates run configurations for Scala main classes sourced by scala_binary targets. */ |
| public class BlazeScalaMainClassRunConfigurationProducer |
| extends BlazeRunConfigurationProducer<BlazeCommandRunConfiguration> { |
| |
| private static final String SCALA_BINARY_MAP_KEY = "BlazeScalaBinaryMap"; |
| |
| public BlazeScalaMainClassRunConfigurationProducer() { |
| super(BlazeCommandRunConfigurationType.getInstance()); |
| } |
| |
| @Override |
| protected boolean doSetupConfigFromContext( |
| BlazeCommandRunConfiguration configuration, |
| ConfigurationContext context, |
| Ref<PsiElement> sourceElement) { |
| ScObject mainObject = getMainObject(context); |
| if (mainObject == null) { |
| return false; |
| } |
| Option<PsiMethod> mainMethod = ScalaMainMethodUtil.findMainMethod(mainObject); |
| if (mainMethod.isEmpty()) { |
| sourceElement.set(mainObject); |
| } else { |
| sourceElement.set(mainMethod.get()); |
| } |
| TargetIdeInfo target = getTarget(context.getProject(), mainObject); |
| if (target == null) { |
| return false; |
| } |
| configuration.setTarget(target.key.label); |
| BlazeCommandRunConfigurationCommonState handlerState = |
| configuration.getHandlerStateIfType(BlazeCommandRunConfigurationCommonState.class); |
| if (handlerState == null) { |
| return false; |
| } |
| handlerState.getCommandState().setCommand(BlazeCommandName.RUN); |
| configuration.setGeneratedName(); |
| return true; |
| } |
| |
| @Override |
| protected boolean doIsConfigFromContext( |
| BlazeCommandRunConfiguration configuration, ConfigurationContext context) { |
| BlazeCommandRunConfigurationCommonState handlerState = |
| configuration.getHandlerStateIfType(BlazeCommandRunConfigurationCommonState.class); |
| if (handlerState == null) { |
| return false; |
| } |
| if (!Objects.equals(handlerState.getCommandState().getCommand(), BlazeCommandName.RUN)) { |
| return false; |
| } |
| ScObject mainObject = getMainObject(context); |
| if (mainObject == null) { |
| return false; |
| } |
| TargetIdeInfo target = getTarget(context.getProject(), mainObject); |
| return target != null && Objects.equals(configuration.getTarget(), target.key.label); |
| } |
| |
| @Nullable |
| private static ScObject getMainObject(ConfigurationContext context) { |
| Location location = context.getLocation(); |
| if (location == null) { |
| return null; |
| } |
| location = JavaExecutionUtil.stepIntoSingleClass(context.getLocation()); |
| if (location == null) { |
| return null; |
| } |
| PsiElement element = location.getPsiElement(); |
| if (!(element.getContainingFile() instanceof ScalaFile)) { |
| return null; |
| } |
| if (!element.isPhysical()) { |
| return null; |
| } |
| return getMainObjectFromElement(element); |
| } |
| |
| @Nullable |
| private static ScObject getMainObjectFromElement(PsiElement element) { |
| for (; element != null; element = element.getParent()) { |
| if (element instanceof ScObject) { |
| ScObject obj = (ScObject) element; |
| if (ScalaMainMethodUtil.hasMainMethod(obj)) { |
| return obj; |
| } |
| } else if (element instanceof ScalaFile) { |
| return getMainObjectFromFile((ScalaFile) element); |
| } |
| } |
| return null; |
| } |
| |
| @Nullable |
| private static ScObject getMainObjectFromFile(ScalaFile file) { |
| for (PsiClass aClass : file.getClasses()) { |
| if (!(aClass instanceof ScObject)) { |
| continue; |
| } |
| ScObject obj = (ScObject) aClass; |
| if (ScalaMainMethodUtil.hasMainMethod(obj)) { |
| // Potentially multiple matches, we'll pick the first one. |
| // TODO: prefer class with same name as file? |
| // TODO: skip if not main_class of a rule. |
| return obj; |
| } |
| } |
| return null; |
| } |
| |
| @Nullable |
| private static TargetIdeInfo getTarget(Project project, ScObject mainObject) { |
| File mainObjectFile = RunUtil.getFileForClass(mainObject); |
| if (mainObjectFile == null) { |
| return null; |
| } |
| Collection<TargetIdeInfo> scalaBinaryTargets = findScalaBinaryTargets(project, mainObjectFile); |
| |
| // Scala objects are basically singletons with a '$' appended to the class name. |
| // The trunced qualified name removes the '$', |
| // so it matches the main class specified in the scala_binary rule. |
| String qualifiedName = mainObject.getTruncedQualifiedName(); |
| |
| if (qualifiedName == null) { |
| // out of date psi element; just take the first match |
| return Iterables.getFirst(scalaBinaryTargets, null); |
| } |
| |
| // Can't use getName because of the '$'. |
| String className = qualifiedName.substring(qualifiedName.lastIndexOf('.') + 1); |
| |
| // first look for a matching main_class |
| TargetIdeInfo match = |
| scalaBinaryTargets |
| .stream() |
| .filter( |
| target -> |
| target.javaIdeInfo != null |
| && qualifiedName.equals(target.javaIdeInfo.javaBinaryMainClass)) |
| .findFirst() |
| .orElse(null); |
| if (match != null) { |
| return match; |
| } |
| |
| match = |
| scalaBinaryTargets |
| .stream() |
| .filter(target -> className.equals(target.key.label.targetName().toString())) |
| .findFirst() |
| .orElse(null); |
| if (match != null) { |
| return match; |
| } |
| return Iterables.getFirst(scalaBinaryTargets, null); |
| } |
| |
| /** Returns all scala_binary targets reachable from the given source file. */ |
| private static Collection<TargetIdeInfo> findScalaBinaryTargets( |
| Project project, File mainClassFile) { |
| FilteredTargetMap map = |
| SyncCache.getInstance(project) |
| .get( |
| SCALA_BINARY_MAP_KEY, |
| BlazeScalaMainClassRunConfigurationProducer::computeTargetMap); |
| return map != null ? map.targetsForSourceFile(mainClassFile) : ImmutableList.of(); |
| } |
| |
| private static FilteredTargetMap computeTargetMap(Project project, BlazeProjectData projectData) { |
| return new FilteredTargetMap( |
| project, |
| projectData.artifactLocationDecoder, |
| projectData.targetMap, |
| (target) -> target.kind == Kind.SCALA_BINARY && target.isPlainTarget()); |
| } |
| } |