| /* |
| * 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.references; |
| |
| import com.google.idea.blaze.base.model.primitives.WorkspacePath; |
| import com.google.idea.blaze.base.lang.buildfile.psi.BuildFile; |
| import com.google.idea.blaze.base.lang.buildfile.psi.StringLiteral; |
| import com.google.idea.blaze.base.lang.buildfile.psi.util.PsiUtils; |
| import com.intellij.lang.ASTNode; |
| import com.intellij.openapi.util.TextRange; |
| import com.intellij.psi.PsiElement; |
| import com.intellij.psi.PsiReferenceBase; |
| import com.intellij.util.IncorrectOperationException; |
| import com.intellij.util.PathUtil; |
| |
| import javax.annotation.Nullable; |
| |
| /** |
| * The label component preceeding the colon. |
| */ |
| public class PackageReferenceFragment extends PsiReferenceBase<StringLiteral> { |
| |
| public PackageReferenceFragment(LabelReference labelReference) { |
| super(labelReference.getElement(), labelReference.getRangeInElement(), labelReference.isSoft()); |
| } |
| |
| @Nullable |
| private WorkspacePath getWorkspacePath(String labelString) { |
| if (!labelString.startsWith("//")) { |
| return null; |
| } |
| int colonIndex = labelString.indexOf(':'); |
| int endIndex = colonIndex != -1 ? colonIndex : labelString.length(); |
| return WorkspacePath.createIfValid(labelString.substring(2, endIndex)); |
| } |
| |
| @Override |
| public TextRange getRangeInElement() { |
| String rawText = myElement.getText(); |
| boolean valid = getWorkspacePath(myElement.getStringContents()) != null; |
| if (!valid) { |
| return TextRange.EMPTY_RANGE; |
| } |
| int endIndex = rawText.indexOf(':'); |
| if (endIndex == -1) { |
| endIndex = rawText.length() - 1; |
| } |
| return new TextRange(1, endIndex); |
| } |
| |
| @Nullable |
| @Override |
| public BuildFile resolve() { |
| WorkspacePath workspacePath = getWorkspacePath(myElement.getStringContents()); |
| return BuildReferenceManager.getInstance(myElement.getProject()).resolveBlazePackage(workspacePath); |
| } |
| |
| @Override |
| public Object[] getVariants() { |
| return EMPTY_ARRAY; |
| } |
| |
| @Override |
| public PsiElement handleElementRename(String newElementName) throws IncorrectOperationException { |
| return myElement; // renaming a BUILD file has no effect on the package label fragments |
| } |
| |
| @Override |
| public PsiElement bindToElement(PsiElement element) throws IncorrectOperationException { |
| if (!(element instanceof BuildFile)) { |
| return super.bindToElement(element); |
| } |
| if (element.equals(resolve())) { |
| return myElement; |
| } |
| WorkspacePath newPath = ((BuildFile) element).getPackageWorkspacePath(); |
| if (newPath == null) { |
| return myElement; |
| } |
| String labelString = myElement.getStringContents(); |
| int colonIndex = labelString.indexOf(':'); |
| if (colonIndex != -1) { |
| return handleRename("//" + newPath + labelString.substring(colonIndex)); |
| } |
| // need to assume there's an implicit rule name |
| return handleRename("//" + newPath + ":" + PathUtil.getFileName(labelString)); |
| } |
| |
| private PsiElement handleRename(String newStringContents) { |
| ASTNode node = myElement.getNode(); |
| node.replaceChild(node.getFirstChildNode(), PsiUtils.createNewLabel(myElement.getProject(), newStringContents)); |
| return myElement; |
| } |
| |
| } |