| /* |
| * Copyright 2007 Sascha Weinreuter |
| * |
| * 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 org.intellij.plugins.relaxNG.references; |
| |
| import com.intellij.openapi.util.Key; |
| import com.intellij.patterns.XmlAttributeValuePattern; |
| import com.intellij.patterns.XmlNamedElementPattern; |
| import com.intellij.psi.PsiElement; |
| import com.intellij.psi.XmlElementVisitor; |
| import com.intellij.psi.search.PsiElementProcessor; |
| import com.intellij.psi.xml.XmlAttribute; |
| import com.intellij.psi.xml.XmlDocument; |
| import com.intellij.psi.xml.XmlFile; |
| import com.intellij.psi.xml.XmlTag; |
| import com.intellij.util.ProcessingContext; |
| import com.intellij.xml.util.XmlUtil; |
| import gnu.trove.THashSet; |
| import org.jetbrains.annotations.NotNull; |
| import org.jetbrains.annotations.Nullable; |
| |
| import java.util.Set; |
| |
| class ResolvingVisitor extends XmlElementVisitor implements PsiElementProcessor { |
| static final Key<Set<XmlFile>> VISITED_KEY = Key.create("visited"); |
| |
| private final XmlAttributeValuePattern myPattern; |
| private final ProcessingContext myProcessingContext; |
| private XmlNamedElementPattern myIncludePattern; |
| |
| public ResolvingVisitor(XmlAttributeValuePattern pattern, ProcessingContext context) { |
| myPattern = pattern; |
| myProcessingContext = context; |
| |
| myProcessingContext.put(VISITED_KEY, new THashSet<XmlFile>()); |
| } |
| |
| @Override |
| public void visitXmlDocument(@Nullable XmlDocument document) { |
| if (document != null) { |
| final XmlTag rootTag = document.getRootTag(); |
| if (rootTag != null) { |
| visitXmlTag(rootTag); |
| } |
| } |
| } |
| |
| public void setIncludePattern(XmlNamedElementPattern includePattern) { |
| myIncludePattern = includePattern; |
| } |
| |
| @Override |
| public void visitXmlAttribute(XmlAttribute attribute) { |
| if (myIncludePattern != null && myIncludePattern.accepts(attribute, myProcessingContext)) { |
| final String value = attribute.getValue(); |
| if (value == null) return; |
| |
| final XmlFile xmlFile = XmlUtil.findXmlFile(attribute.getContainingFile(), value); |
| if (xmlFile != null) { |
| processInclude(xmlFile, attribute); |
| } |
| } else { |
| processAttribute(attribute); |
| } |
| } |
| |
| private void processAttribute(XmlAttribute attribute) { |
| myPattern.accepts(attribute.getValueElement(), myProcessingContext); |
| } |
| |
| @Override |
| @SuppressWarnings({ "ForLoopReplaceableByForEach" }) |
| public void visitXmlTag(XmlTag tag) { |
| visitAttributes(tag); |
| } |
| |
| protected void visitAttributes(XmlTag tag) { |
| final XmlAttribute[] xmlAttributes = tag.getAttributes(); |
| for (XmlAttribute attribute : xmlAttributes) { |
| attribute.accept(this); |
| } |
| } |
| |
| protected void visitSubTags(XmlTag tag) { |
| final XmlTag[] tags = tag.getSubTags(); |
| for (XmlTag subTag : tags) { |
| if (shouldContinue()) { |
| subTag.accept(this); |
| } |
| } |
| } |
| |
| private void processInclude(XmlFile xmlFile, XmlAttribute attribute) { |
| final Set<XmlFile> set = myProcessingContext.get(VISITED_KEY); |
| if (set.contains(xmlFile)) { |
| return; |
| } |
| set.add(xmlFile); |
| |
| final XmlDocument document = xmlFile.getDocument(); |
| if (document == null) return; |
| final XmlTag rootTag = document.getRootTag(); |
| if (rootTag == null) return; |
| |
| rootTag.processElements(this, attribute); |
| } |
| |
| @Override |
| public boolean execute(@NotNull PsiElement element) { |
| element.accept(this); |
| return shouldContinue(); |
| } |
| |
| protected boolean shouldContinue() { |
| return true; |
| } |
| } |