| /* |
| * Copyright 2016 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.base.lang.buildfile.search; |
| |
| import com.google.idea.blaze.base.bazel.BuildSystemProvider; |
| import com.google.idea.blaze.base.lang.buildfile.psi.BuildFile; |
| import com.google.idea.blaze.base.model.primitives.Label; |
| import com.google.idea.blaze.base.settings.Blaze; |
| import com.google.idea.blaze.base.sync.workspace.WorkspaceHelper; |
| import com.intellij.history.core.Paths; |
| import com.intellij.openapi.roots.ProjectFileIndex; |
| import com.intellij.openapi.vfs.VirtualFile; |
| import com.intellij.psi.PackagePrefixFileSystemItem; |
| import com.intellij.psi.PsiDirectory; |
| import com.intellij.psi.PsiFile; |
| import com.intellij.psi.PsiFileSystemItem; |
| import com.intellij.psi.search.GlobalSearchScope; |
| import com.intellij.util.PathUtil; |
| import com.intellij.util.Processor; |
| import java.util.Objects; |
| import javax.annotation.Nullable; |
| |
| /** |
| * A Blaze package is a directory containing a BUILD file, plus all subdirectories which aren't |
| * themselves Blaze packages. |
| */ |
| public class BlazePackage { |
| |
| @Nullable |
| public static BlazePackage getContainingPackage(PsiFileSystemItem file) { |
| if (file instanceof PsiFile) { |
| file = ((PsiFile) file).getOriginalFile(); |
| } |
| if (file instanceof BuildFile |
| && Blaze.getBuildSystemProvider(file.getProject()).isBuildFile(file.getName())) { |
| return new BlazePackage((BuildFile) file); |
| } |
| return getContainingPackage(getPsiDirectory(file)); |
| } |
| |
| @Nullable |
| private static PsiDirectory getPsiDirectory(PsiFileSystemItem file) { |
| if (file instanceof PsiDirectory) { |
| return (PsiDirectory) file; |
| } |
| if (file instanceof PsiFile) { |
| return ((PsiFile) file).getContainingDirectory(); |
| } |
| if (file instanceof PackagePrefixFileSystemItem) { |
| return ((PackagePrefixFileSystemItem) file).getDirectory(); |
| } |
| return null; |
| } |
| |
| @Nullable |
| public static BlazePackage getContainingPackage(@Nullable PsiDirectory dir) { |
| while (dir != null) { |
| VirtualFile buildFile = |
| Blaze.getBuildSystemProvider(dir.getProject()) |
| .findBuildFileInDirectory(dir.getVirtualFile()); |
| if (buildFile != null) { |
| PsiFile psiFile = dir.getManager().findFile(buildFile); |
| if (psiFile != null) { |
| return psiFile instanceof BuildFile ? new BlazePackage((BuildFile) psiFile) : null; |
| } |
| } |
| dir = dir.getParentDirectory(); |
| } |
| return null; |
| } |
| |
| public final BuildFile buildFile; |
| |
| private BlazePackage(BuildFile buildFile) { |
| this.buildFile = buildFile; |
| } |
| |
| @Nullable |
| public PsiDirectory getContainingDirectory() { |
| return buildFile.getParent(); |
| } |
| |
| /** |
| * The search scope corresponding to this package (i.e. not crossing package boundaries). |
| * |
| * @param onlyBlazeFiles if true, the scope is limited to BUILD and Skylark files. |
| */ |
| public GlobalSearchScope getSearchScope(boolean onlyBlazeFiles) { |
| return new BlazePackageSearchScope(this, onlyBlazeFiles); |
| } |
| |
| @Nullable |
| public Label getPackageLabel() { |
| return WorkspaceHelper.getBuildLabel(buildFile.getProject(), buildFile.getFile()); |
| } |
| |
| /** |
| * Returns the file path relative to this blaze package, or null if it does lie inside this |
| * package |
| */ |
| @Nullable |
| public String getPackageRelativePath(String filePath) { |
| String packageFilePath = PathUtil.getParentPath(buildFile.getFilePath()); |
| return Paths.relativeIfUnder(filePath, packageFilePath); |
| } |
| |
| /** Formats the child file path as a BUILD label (i.e. "//package_path[:relative_path]") */ |
| @Nullable |
| public Label getBuildLabelForChild(String filePath) { |
| Label parentPackage = getPackageLabel(); |
| if (parentPackage == null) { |
| return null; |
| } |
| String relativePath = getPackageRelativePath(filePath); |
| return parentPackage.withTargetName(relativePath); |
| } |
| |
| /** |
| * The path from the blaze package directory to the child file, or null if the package directory |
| * is not an ancestor of the provided file. |
| */ |
| @Nullable |
| public String getRelativePathToChild(@Nullable VirtualFile child) { |
| if (child == null) { |
| return null; |
| } |
| String packagePath = PathUtil.getParentPath(buildFile.getFilePath()); |
| return Paths.relativeIfUnder(child.getPath(), packagePath); |
| } |
| |
| /** |
| * Walks the directory tree, processing all files accessible by this package (i.e. not processing |
| * child packages). |
| */ |
| public void processPackageFiles(Processor<PsiFile> processor) { |
| PsiDirectory dir = getContainingDirectory(); |
| if (dir == null) { |
| return; |
| } |
| processPackageFiles(processor, dir); |
| } |
| |
| private static void processPackageFiles(Processor<PsiFile> processor, PsiDirectory directory) { |
| processDirectory(processor, directory); |
| for (PsiDirectory child : directory.getSubdirectories()) { |
| if (!isBlazePackage(child)) { |
| processPackageFiles(processor, directory); |
| } |
| } |
| } |
| |
| private static boolean isBlazePackage(PsiDirectory dir) { |
| return Blaze.getBuildSystemProvider(dir.getProject()) |
| .findBuildFileInDirectory(dir.getVirtualFile()) |
| != null; |
| } |
| |
| private static void processDirectory(Processor<PsiFile> processor, PsiDirectory directory) { |
| for (PsiFile file : directory.getFiles()) { |
| processor.process(file); |
| } |
| } |
| |
| @Override |
| public boolean equals(Object obj) { |
| if (!(obj instanceof BlazePackage)) { |
| return false; |
| } |
| if (obj == this) { |
| return true; |
| } |
| BlazePackage that = (BlazePackage) obj; |
| return Objects.equals(buildFile.getFilePath(), that.buildFile.getFilePath()); |
| } |
| |
| @Override |
| public int hashCode() { |
| return Objects.hash(buildFile.getFilePath()); |
| } |
| |
| @Override |
| public String toString() { |
| return String.format( |
| "%s package: %s", |
| Blaze.buildSystemName(buildFile.getProject()), buildFile.getPackageLabel()); |
| } |
| |
| public static boolean hasBlazePackageChild(PsiDirectory directory) { |
| ProjectFileIndex index = ProjectFileIndex.SERVICE.getInstance(directory.getProject()); |
| BuildSystemProvider buildSystemProvider = Blaze.getBuildSystemProvider(directory.getProject()); |
| return hasBlazePackageChild(index, buildSystemProvider, directory); |
| } |
| |
| private static boolean hasBlazePackageChild( |
| ProjectFileIndex index, BuildSystemProvider buildSystemProvider, PsiDirectory directory) { |
| if (!index.isInSourceContent(directory.getVirtualFile())) { |
| // only search project files |
| return false; |
| } |
| if (buildSystemProvider.findBuildFileInDirectory(directory.getVirtualFile()) != null) { |
| return true; |
| } |
| for (PsiDirectory child : directory.getSubdirectories()) { |
| if (hasBlazePackageChild(index, buildSystemProvider, child)) { |
| return true; |
| } |
| } |
| return false; |
| } |
| } |