| /* |
| * 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.plugins.xpathView.support.jaxen.extensions; |
| |
| import org.intellij.lang.xpath.context.functions.Parameter; |
| import org.intellij.lang.xpath.psi.XPathType; |
| |
| import com.intellij.psi.PsiElement; |
| import com.intellij.psi.PsiFile; |
| import org.jetbrains.annotations.Nullable; |
| |
| import org.jaxen.Context; |
| import org.jaxen.Function; |
| import org.jaxen.FunctionCallException; |
| |
| import java.util.List; |
| |
| public abstract class BasicFileInfoFunction extends FunctionImplementation implements Function { |
| public BasicFileInfoFunction(String name, XPathType returnType, Parameter... parameters) { |
| super(name, returnType, parameters); |
| } |
| |
| public Function getImplementation() { |
| return this; |
| } |
| |
| @Nullable |
| @SuppressWarnings({ "RawUseOfParameterizedType" }) |
| public Object call(Context context, List list) throws FunctionCallException { |
| final Object arg; |
| if (list.size() == 0) { |
| arg = context.getNodeSet().get(0); |
| } else { |
| final Object o = list.get(0); |
| arg = o instanceof List ? ((List)o).get(0) : o; |
| } |
| if (!(arg instanceof PsiElement)) { |
| throw new FunctionCallException("NodeSet expected"); |
| } |
| final PsiFile psiFile = ((PsiElement)arg).getContainingFile(); |
| |
| assert psiFile != null; |
| return extractInfo(psiFile); |
| } |
| |
| @Nullable |
| protected abstract Object extractInfo(PsiFile psiFile); |
| } |