| /* |
| * Copyright 2005 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.lang.xpath.xslt.util; |
| |
| import com.intellij.psi.PsiElement; |
| import com.intellij.psi.PsiFile; |
| import com.intellij.psi.search.PsiElementProcessor; |
| import com.intellij.psi.xml.XmlDocument; |
| import com.intellij.psi.xml.XmlFile; |
| import com.intellij.psi.xml.XmlTag; |
| import com.intellij.util.containers.ContainerUtil; |
| import org.intellij.lang.xpath.psi.impl.ResolveUtil; |
| import org.intellij.lang.xpath.xslt.XsltSupport; |
| import org.jetbrains.annotations.NotNull; |
| |
| import java.util.Set; |
| |
| public abstract class ElementProcessor<T extends PsiElement> implements ResolveUtil.XmlProcessor { |
| private int myInclude; |
| private boolean myIsCyclic; |
| |
| protected final T myRoot; |
| |
| private final Set<PsiElement> myHistory = ContainerUtil.<PsiElement>newIdentityTroveSet(); |
| |
| public ElementProcessor(T root) { |
| myRoot = root; |
| } |
| |
| protected abstract void processTemplate(XmlTag tag); |
| protected abstract void processVarOrParam(XmlTag tag); |
| |
| protected abstract boolean shouldContinue(); |
| protected abstract boolean followImport(); |
| |
| protected boolean isInclude() { |
| return myInclude > 0; |
| } |
| |
| public boolean isCyclic() { |
| return myIsCyclic; |
| } |
| |
| public boolean process(XmlTag tag) { |
| if (myHistory.contains(tag)) { |
| myIsCyclic = true; |
| return false; |
| } |
| myHistory.add(tag); |
| |
| if (XsltSupport.isVariableOrParam(tag)) { |
| processVarOrParam(tag); |
| } else if (XsltSupport.isTemplate(tag, false)) { |
| processTemplate(tag); |
| } else if (XsltSupport.isIncludeOrImport(tag)) { |
| if (XsltSupport.isImport(tag) && !followImport()) { |
| return shouldContinue(); |
| } |
| final PsiFile containingFile = tag.getContainingFile(); |
| assert containingFile != null; |
| PsiFile file = containingFile.getOriginalFile(); |
| |
| final PsiFile psiFile = ResolveUtil.resolveFile(tag.getAttribute("href", null), file); |
| if (psiFile != null && XsltSupport.isXsltFile(psiFile)) { |
| processExternalFile(psiFile, tag); |
| } |
| } else { |
| processTag(tag); |
| } |
| return shouldContinue(); |
| } |
| |
| protected void processTag(XmlTag tag) { |
| } |
| |
| public void processExternalFile(PsiFile psiFile, XmlTag place) { |
| final XmlDocument document = ((XmlFile)psiFile).getDocument(); |
| assert document != null; |
| |
| final XmlTag rootTag = document.getRootTag(); |
| assert rootTag != null; |
| |
| myInclude++; |
| try { |
| rootTag.processElements(new PsiElementProcessor() { |
| public boolean execute(@NotNull PsiElement element) { |
| if (element instanceof XmlTag) { |
| return process((XmlTag)element); |
| } |
| return shouldContinue(); |
| } |
| }, place); |
| } finally { |
| myInclude--; |
| } |
| } |
| } |