| /* |
| * Copyright 2000-2009 JetBrains s.r.o. |
| * |
| * 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.intellij.refactoring.move; |
| |
| import com.intellij.openapi.diagnostic.Logger; |
| import com.intellij.openapi.util.Key; |
| import com.intellij.openapi.util.TextRange; |
| import com.intellij.psi.*; |
| import com.intellij.psi.impl.source.resolve.reference.impl.providers.FileReferenceOwner; |
| import com.intellij.psi.impl.source.resolve.reference.impl.providers.PsiFileReference; |
| import com.intellij.psi.impl.source.tree.injected.InjectedLanguageUtil; |
| import com.intellij.util.IncorrectOperationException; |
| import com.intellij.util.containers.HashMap; |
| import org.jetbrains.annotations.NotNull; |
| |
| import java.util.List; |
| import java.util.Map; |
| |
| public class FileReferenceContextUtil { |
| private static final Logger LOG = Logger.getInstance("#com.intellij.refactoring.move.FileReferenceContextUtil"); |
| private static final Key<PsiFileSystemItem> REF_FILE_SYSTEM_ITEM_KEY = Key.create("REF_FILE_SYSTEM_ITEM_KEY"); |
| |
| private FileReferenceContextUtil() { |
| } |
| |
| public static Map<String, PsiFileSystemItem> encodeFileReferences(PsiElement element) { |
| final Map<String,PsiFileSystemItem> map = new HashMap<String, PsiFileSystemItem>(); |
| if (element == null || element instanceof PsiCompiledElement || isBinary(element)) return map; |
| element.accept(new PsiRecursiveElementWalkingVisitor(true) { |
| @Override public void visitElement(PsiElement element) { |
| if (element instanceof PsiLanguageInjectionHost) { |
| InjectedLanguageUtil.enumerate(element, new PsiLanguageInjectionHost.InjectedPsiVisitor() { |
| @Override |
| public void visit(@NotNull final PsiFile injectedPsi, @NotNull final List<PsiLanguageInjectionHost.Shred> places) { |
| encodeFileReferences(injectedPsi); |
| } |
| }); |
| } |
| |
| final PsiReference[] refs = element.getReferences(); |
| if (refs.length > 0 && refs[0] instanceof FileReferenceOwner) { |
| final PsiFileReference ref = ((FileReferenceOwner)refs[0]).getLastFileReference(); |
| if (ref != null) { |
| final ResolveResult[] results = ref.multiResolve(false); |
| for (ResolveResult result : results) { |
| if (result.getElement() instanceof PsiFileSystemItem) { |
| PsiFileSystemItem fileSystemItem = (PsiFileSystemItem)result.getElement(); |
| element.putCopyableUserData(REF_FILE_SYSTEM_ITEM_KEY, fileSystemItem); |
| map.put(element.getText(), fileSystemItem); |
| break; |
| } |
| } |
| } |
| } |
| super.visitElement(element); |
| } |
| }); |
| return map; |
| } |
| |
| private static boolean isBinary(PsiElement element) { |
| final PsiFile containingFile = element.getContainingFile(); |
| if (containingFile == null || containingFile.getFileType().isBinary()) return true; |
| return false; |
| } |
| |
| public static void decodeFileReferences(PsiElement element) { |
| if (element == null || element instanceof PsiCompiledElement || isBinary(element)) return; |
| element.accept(new PsiRecursiveElementVisitor(true) { |
| @Override public void visitElement(PsiElement element) { |
| final PsiFileSystemItem item = element.getCopyableUserData(REF_FILE_SYSTEM_ITEM_KEY); |
| element.putCopyableUserData(REF_FILE_SYSTEM_ITEM_KEY, null); |
| element = bindElement(element, item); |
| if (element != null) { |
| element.acceptChildren(this); |
| } |
| |
| if (element instanceof PsiLanguageInjectionHost) { |
| InjectedLanguageUtil.enumerate(element, new PsiLanguageInjectionHost.InjectedPsiVisitor() { |
| @Override |
| public void visit(@NotNull final PsiFile injectedPsi, @NotNull final List<PsiLanguageInjectionHost.Shred> places) { |
| decodeFileReferences(injectedPsi); |
| } |
| }); |
| } |
| } |
| }); |
| } |
| |
| public static void decodeFileReferences(PsiElement element, final Map<String, PsiFileSystemItem> map, final TextRange range) { |
| if (element == null || element instanceof PsiCompiledElement || isBinary(element)) return; |
| element.accept(new PsiRecursiveElementVisitor(true) { |
| @Override public void visitElement(PsiElement element) { |
| if (!range.intersects(element.getTextRange())) return; |
| String text = element.getText(); |
| PsiFileSystemItem item = map.get(text); |
| element.putCopyableUserData(REF_FILE_SYSTEM_ITEM_KEY, item); |
| element.acceptChildren(this); |
| } |
| }); |
| decodeFileReferences(element); |
| } |
| |
| private static PsiElement bindElement(final PsiElement element, PsiFileSystemItem item) { |
| if (item != null && item.isValid() && item.getVirtualFile() != null) { |
| PsiReference[] refs = element.getReferences(); |
| for (PsiReference ref : refs) { |
| if (ref instanceof FileReferenceOwner) { |
| final PsiFileReference fileReference = ((FileReferenceOwner)refs[0]).getLastFileReference(); |
| if (fileReference != null) { |
| try { |
| PsiElement newElement = fileReference.bindToElement(item); |
| if (newElement != null) { |
| // assertion for troubles like IDEA-59540 |
| LOG.assertTrue(element.getClass() == newElement.getClass(), "Reference " + ref + " violated contract of bindToElement()"); |
| } |
| return newElement; |
| } |
| catch (IncorrectOperationException e) { |
| LOG.error(e); |
| } |
| } |
| break; |
| } |
| } |
| } |
| return element; |
| } |
| } |