| /* |
| * Copyright 2002-2005 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.plugins.xpathView.support.jaxen; |
| |
| import com.intellij.psi.PsiElement; |
| import com.intellij.psi.PsiWhiteSpace; |
| import com.intellij.psi.xml.XmlAttribute; |
| import com.intellij.psi.xml.XmlElement; |
| import com.intellij.psi.xml.XmlToken; |
| |
| class PsiChildAxisIterator extends NodeIterator { |
| public PsiChildAxisIterator(Object contextNode) { |
| super((PsiElement)contextNode); |
| } |
| |
| protected PsiElement getFirstNode(PsiElement contextNode) { |
| PsiElement n = contextNode.getFirstChild(); |
| n = skipToXmlElement(n); |
| return n; |
| } |
| |
| protected PsiElement getNextNode(PsiElement contextNode) { |
| PsiElement n = contextNode.getNextSibling(); |
| n = skipToXmlElement(n); |
| return n; |
| } |
| |
| private PsiElement skipToXmlElement(PsiElement n) { |
| // attributes cannot appear in the child axis |
| // optimize: skip XmlTokens |
| while (n != null && (!isXmlElement(n) || isXmlToken(n) || isAttribute(n))) { |
| n = n.getNextSibling(); |
| } |
| return n; |
| } |
| |
| private boolean isAttribute(PsiElement n) { |
| return (n instanceof XmlAttribute); |
| } |
| |
| private boolean isXmlElement(PsiElement n) { |
| return (n instanceof XmlElement || n instanceof PsiWhiteSpace); |
| } |
| |
| private boolean isXmlToken(PsiElement n) { |
| return n instanceof XmlToken; |
| } |
| } |