HtmlClosingTagErrorFilter.java

/*
 * Copyright 2000-2014 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.codeInsight.daemon.XmlErrorMessages;
import com.intellij.codeInsight.daemon.impl.analysis.XmlHighlightVisitor;
import com.intellij.lang.html.HTMLLanguage;
import com.intellij.psi.PsiElement;
import com.intellij.psi.PsiErrorElement;
import com.intellij.psi.PsiFile;
import com.intellij.psi.xml.XmlToken;
import com.intellij.psi.xml.XmlTokenType;
import org.jetbrains.annotations.NotNull;

/**
 * @author spleaner
 */
public class HtmlClosingTagErrorFilter extends HighlightErrorFilter {
  public HtmlClosingTagErrorFilter(XmlHighlightVisitor xmlHighlightVisitor) {
    assert xmlHighlightVisitor != null;
  }

  @Override
  public boolean shouldHighlightErrorElement(@NotNull final PsiErrorElement element) {
    final PsiFile psiFile = element.getContainingFile();
    if (psiFile == null || psiFile.getViewProvider().getBaseLanguage() != HTMLLanguage.INSTANCE
                            && HTMLLanguage.INSTANCE != element.getLanguage()) return true;

    final PsiElement[] children = element.getChildren();
    if (children.length > 0) {
      if (children[0] instanceof XmlToken && XmlTokenType.XML_END_TAG_START == ((XmlToken)children[0]).getTokenType()) {
        if (XmlErrorMessages.message("xml.parsing.closing.tag.matches.nothing").equals(element.getErrorDescription())) {
          return false;
        }
      }
    }

    return true;
  }
}