| /* |
| * Copyright 2000-2013 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.codeInsight.highlighting; |
| |
| import com.intellij.lang.Language; |
| import com.intellij.lang.injection.InjectedLanguageManager; |
| import com.intellij.openapi.util.Key; |
| import com.intellij.psi.*; |
| import com.intellij.psi.tree.TokenSet; |
| import org.jetbrains.annotations.NotNull; |
| |
| import java.util.*; |
| |
| /** |
| * @author Dennis.Ushakov |
| */ |
| public abstract class TemplateLanguageErrorFilter extends HighlightErrorFilter { |
| @NotNull |
| private final TokenSet myTemplateExpressionStartTokens; |
| @NotNull |
| private final Class myTemplateFileViewProviderClass; |
| |
| private final Set<Language> knownLanguageSet; |
| |
| private static final Key<Class> TEMPLATE_VIEW_PROVIDER_CLASS_KEY = Key.create("TEMPLATE_VIEW_PROVIDER_CLASS"); |
| |
| protected TemplateLanguageErrorFilter( |
| @NotNull final TokenSet templateExpressionStartTokens, |
| @NotNull final Class templateFileViewProviderClass) |
| { |
| this(templateExpressionStartTokens, templateFileViewProviderClass, new String[0]); |
| } |
| |
| protected TemplateLanguageErrorFilter( |
| @NotNull final TokenSet templateExpressionStartTokens, |
| @NotNull final Class templateFileViewProviderClass, |
| @NotNull final String... knownSubLanguageNames) |
| { |
| myTemplateExpressionStartTokens = TokenSet.create(templateExpressionStartTokens.getTypes()); |
| myTemplateFileViewProviderClass = templateFileViewProviderClass; |
| |
| List<String> knownSubLanguageList = new ArrayList<String>(Arrays.asList(knownSubLanguageNames)); |
| knownSubLanguageList.add("JavaScript"); |
| knownSubLanguageList.add("CSS"); |
| knownLanguageSet = new HashSet<Language>(); |
| for (String name : knownSubLanguageList) { |
| final Language language = Language.findLanguageByID(name); |
| if (language != null) { |
| knownLanguageSet.add(language); |
| } |
| } |
| } |
| |
| @Override |
| public boolean shouldHighlightErrorElement(@NotNull PsiErrorElement element) { |
| if (isKnownSubLanguage(element.getParent().getLanguage())) { |
| // |
| // Immediately discard filters with non-matching template class if already known |
| // |
| Class templateClass = element.getUserData(TEMPLATE_VIEW_PROVIDER_CLASS_KEY); |
| if (templateClass != null && (templateClass != myTemplateFileViewProviderClass)) return true; |
| |
| PsiFile psiFile = element.getContainingFile(); |
| int offset = element.getTextOffset(); |
| InjectedLanguageManager injectedLanguageManager = InjectedLanguageManager.getInstance(element.getProject()); |
| if (injectedLanguageManager.isInjectedFragment(psiFile)) { |
| PsiElement host = injectedLanguageManager.getInjectionHost(element); |
| if (host != null) { |
| psiFile = host.getContainingFile(); |
| offset = injectedLanguageManager.injectedToHost(element, offset); |
| } |
| } |
| final FileViewProvider viewProvider = psiFile.getViewProvider(); |
| element.putUserData(TEMPLATE_VIEW_PROVIDER_CLASS_KEY, viewProvider.getClass()); |
| if (!(viewProvider.getClass() == myTemplateFileViewProviderClass)) { |
| return true; |
| } |
| // |
| // An error can occur at template element or before it. Check both. |
| // |
| if (shouldIgnoreErrorAt(viewProvider, offset) || shouldIgnoreErrorAt(viewProvider, offset + 1)) return false; |
| } |
| return true; |
| } |
| |
| private boolean shouldIgnoreErrorAt(@NotNull FileViewProvider viewProvider, int offset) { |
| PsiElement element = viewProvider.findElementAt(offset, viewProvider.getBaseLanguage()); |
| if (element instanceof PsiWhiteSpace) element = element.getNextSibling(); |
| if (element != null && myTemplateExpressionStartTokens.contains(element.getNode().getElementType())) { |
| return true; |
| } |
| return false; |
| } |
| |
| protected boolean isKnownSubLanguage(@NotNull final Language language) { |
| for (Language knownLanguage : knownLanguageSet) { |
| if (language.is(knownLanguage)) { |
| return true; |
| } |
| } |
| return false; |
| } |
| } |