| /* |
| * 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.psi.impl.source.tree.injected; |
| |
| import com.intellij.lang.injection.MultiHostInjector; |
| import com.intellij.openapi.editor.ex.DocumentEx; |
| import com.intellij.openapi.project.Project; |
| import com.intellij.openapi.util.Pair; |
| import com.intellij.psi.FileViewProvider; |
| import com.intellij.psi.PsiElement; |
| import com.intellij.psi.PsiFile; |
| import com.intellij.psi.PsiManager; |
| import com.intellij.psi.util.CachedValueProvider; |
| import com.intellij.psi.util.ParameterizedCachedValueProvider; |
| import com.intellij.psi.util.PsiModificationTracker; |
| import org.jetbrains.annotations.NotNull; |
| import org.jetbrains.annotations.Nullable; |
| |
| import java.util.List; |
| |
| /** |
| * @author cdr |
| */ |
| class InjectedPsiCachedValueProvider implements ParameterizedCachedValueProvider<MultiHostRegistrarImpl, PsiElement> { |
| @Override |
| public CachedValueProvider.Result<MultiHostRegistrarImpl> compute(PsiElement element) { |
| PsiFile hostPsiFile = element.getContainingFile(); |
| if (hostPsiFile == null) return null; |
| FileViewProvider viewProvider = hostPsiFile.getViewProvider(); |
| final DocumentEx hostDocument = (DocumentEx)viewProvider.getDocument(); |
| if (hostDocument == null) return null; |
| |
| PsiManager psiManager = viewProvider.getManager(); |
| final Project project = psiManager.getProject(); |
| InjectedLanguageManagerImpl injectedManager = InjectedLanguageManagerImpl.getInstanceImpl(project); |
| if (injectedManager == null) return null; //for tests |
| final MultiHostRegistrarImpl result = doCompute(element, injectedManager, project, hostPsiFile); |
| |
| return CachedValueProvider.Result.create(result, PsiModificationTracker.MODIFICATION_COUNT, hostDocument); |
| } |
| |
| @Nullable |
| static MultiHostRegistrarImpl doCompute(@NotNull final PsiElement element, |
| @NotNull InjectedLanguageManagerImpl injectedManager, |
| Project project, |
| PsiFile hostPsiFile) { |
| MyInjProcessor processor = new MyInjProcessor(project, hostPsiFile); |
| injectedManager.processInPlaceInjectorsFor(element, processor); |
| MultiHostRegistrarImpl registrar = processor.hostRegistrar; |
| return registrar == null || registrar.getResult() == null ? null : registrar; |
| } |
| |
| private static class MyInjProcessor implements InjectedLanguageManagerImpl.InjProcessor { |
| private MultiHostRegistrarImpl hostRegistrar; |
| private final Project myProject; |
| private final PsiFile myHostPsiFile; |
| |
| private MyInjProcessor(Project project, PsiFile hostPsiFile) { |
| myProject = project; |
| myHostPsiFile = hostPsiFile; |
| } |
| |
| @Override |
| public boolean process(PsiElement element, MultiHostInjector injector) { |
| if (hostRegistrar == null) { |
| hostRegistrar = new MultiHostRegistrarImpl(myProject, myHostPsiFile, element); |
| } |
| injector.getLanguagesToInject(hostRegistrar, element); |
| List<Pair<Place,PsiFile>> result = hostRegistrar.getResult(); |
| return result == null; |
| } |
| } |
| } |