| /* |
| * 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.common.collect.Lists; |
| import com.google.idea.blaze.base.lang.buildfile.language.BuildFileType; |
| import com.google.idea.blaze.base.lang.buildfile.psi.BuildFile; |
| import com.google.idea.blaze.base.lang.buildfile.psi.BuildFile.BlazeFileType; |
| import com.google.idea.blaze.base.lang.buildfile.psi.FuncallExpression; |
| import com.google.idea.blaze.base.lang.buildfile.psi.NamedBuildElement; |
| import com.google.idea.blaze.base.lang.buildfile.psi.util.PsiUtils; |
| import com.google.idea.blaze.base.lang.buildfile.references.LabelUtils; |
| import com.google.idea.blaze.base.model.primitives.Label; |
| import com.intellij.openapi.application.QueryExecutorBase; |
| import com.intellij.psi.PsiDirectory; |
| import com.intellij.psi.PsiElement; |
| import com.intellij.psi.PsiFile; |
| import com.intellij.psi.PsiReference; |
| import com.intellij.psi.search.GlobalSearchScope; |
| import com.intellij.psi.search.LocalSearchScope; |
| import com.intellij.psi.search.SearchScope; |
| import com.intellij.psi.search.UsageSearchContext; |
| import com.intellij.psi.search.searches.ReferencesSearch.SearchParameters; |
| import com.intellij.util.Processor; |
| import java.util.List; |
| import javax.annotation.Nullable; |
| |
| /** String search for references in BUILD files */ |
| public class BuildReferenceSearcher extends QueryExecutorBase<PsiReference, SearchParameters> { |
| |
| public BuildReferenceSearcher() { |
| super(true); |
| } |
| |
| @Override |
| public void processQuery(SearchParameters params, Processor<PsiReference> consumer) { |
| PsiElement element = params.getElementToSearch(); |
| if (element instanceof NamedBuildElement) { |
| String fnName = ((NamedBuildElement) element).getName(); |
| if (fnName != null) { |
| searchForString(params, element, fnName); |
| } |
| return; |
| } |
| |
| PsiFile file = ResolveUtil.asFileSearch(element); |
| if (file != null) { |
| processFileReferences(params, file); |
| return; |
| } |
| if (!(element instanceof FuncallExpression)) { |
| return; |
| } |
| FuncallExpression funcall = (FuncallExpression) element; |
| PsiFile localFile = element.getContainingFile(); |
| if (localFile == null) { |
| return; |
| } |
| Label label = funcall.resolveBuildLabel(); |
| if (label == null) { |
| searchForExternalWorkspace(params, localFile, funcall); |
| return; |
| } |
| List<String> stringsToSearch = LabelUtils.getAllValidLabelStrings(label, true); |
| for (String string : stringsToSearch) { |
| if (LabelUtils.isAbsolute(string)) { |
| searchForString(params, element, string); |
| } else { |
| // only a valid reference from local package -- restrict the search scope accordingly |
| SearchScope scope = limitScopeToFile(params.getScopeDeterminedByUser(), localFile); |
| if (scope != null) { |
| searchForString(params, scope, element, string); |
| } |
| } |
| } |
| } |
| |
| /** Find all references to the given file within BUILD files. */ |
| private void processFileReferences(SearchParameters params, PsiFile file) { |
| if (file instanceof BuildFile) { |
| BuildFile buildFile = (BuildFile) file; |
| processBuildFileReferences(params, buildFile); |
| if (buildFile.getBlazeFileType() == BlazeFileType.BuildPackage) { |
| return; |
| } |
| // for skylark extensions, we also check for package-local references, below |
| } |
| BlazePackage blazePackage = BlazePackage.getContainingPackage(file); |
| PsiDirectory directory = blazePackage != null ? blazePackage.getContainingDirectory() : null; |
| if (directory == null) { |
| return; |
| } |
| Label label = LabelUtils.createLabelForFile(blazePackage, PsiUtils.getFilePath(file)); |
| if (label == null) { |
| return; |
| } |
| |
| // files can only be directly referenced in the containing blaze package |
| List<String> stringsToSearch = LabelUtils.getAllValidLabelStrings(label, true); |
| SearchScope scope = |
| params.getScopeDeterminedByUser().intersectWith(blazePackage.getSearchScope(true)); |
| |
| for (String string : stringsToSearch) { |
| searchForString(params, scope, file, string); |
| } |
| } |
| |
| /** Find references to both the file itself, and build targets defined in the file. */ |
| private void processBuildFileReferences(SearchParameters params, BuildFile file) { |
| Label label = file.getBuildLabel(); |
| if (label == null) { |
| return; |
| } |
| String labelString = label.toString(); |
| List<String> stringsToSearch = Lists.newArrayList(); |
| if (file.getBlazeFileType() == BlazeFileType.BuildPackage) { |
| // remove ':__pkg__' component of label |
| stringsToSearch.add(labelString.split(":", 2)[0]); |
| } else { |
| stringsToSearch.add(labelString); |
| stringsToSearch.add(labelString.replace(':', '/')); // deprecated load/subinclude format |
| } |
| for (String string : stringsToSearch) { |
| searchForString(params, file, string); |
| } |
| } |
| |
| /** |
| * Search for package-local references.<br> |
| * Returns null if the resulting scope is empty |
| */ |
| @Nullable |
| private static SearchScope limitScopeToFile(SearchScope scope, PsiFile file) { |
| if (scope instanceof LocalSearchScope) { |
| return ((LocalSearchScope) scope).isInScope(file.getVirtualFile()) |
| ? new LocalSearchScope(file) |
| : null; |
| } |
| return scope.intersectWith(new LocalSearchScope(file)); |
| } |
| |
| private static void searchForString(SearchParameters params, PsiElement element, String string) { |
| searchForString(params, params.getScopeDeterminedByUser(), element, string); |
| } |
| |
| private static void searchForString( |
| SearchParameters params, SearchScope scope, PsiElement element, String string) { |
| if (scope instanceof GlobalSearchScope) { |
| scope = |
| GlobalSearchScope.getScopeRestrictedByFileTypes( |
| (GlobalSearchScope) scope, BuildFileType.INSTANCE); |
| } |
| params.getOptimizer().searchWord(string, scope, UsageSearchContext.IN_STRINGS, true, element); |
| } |
| |
| private static void searchForExternalWorkspace( |
| SearchParameters params, PsiFile file, FuncallExpression funcall) { |
| if (!isBlazeWorkspaceFile(file)) { |
| return; |
| } |
| String name = funcall.getNameArgumentValue(); |
| if (name != null) { |
| searchForString(params, funcall, "@" + name); |
| } |
| } |
| |
| /** Is the file a blaze WORKSPACE file */ |
| private static boolean isBlazeWorkspaceFile(PsiFile file) { |
| return file instanceof BuildFile |
| && ((BuildFile) file).getBlazeFileType() == BlazeFileType.Workspace; |
| } |
| } |