| /******************************************************************************* |
| * Copyright (c) 2019 IBM Corporation and others. |
| * |
| * This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License 2.0 |
| * which accompanies this distribution, and is available at |
| * https://www.eclipse.org/legal/epl-2.0/ |
| * |
| * SPDX-License-Identifier: EPL-2.0 |
| * |
| * Contributors: |
| * Microsoft Corporation - extracted from org.eclipse.jdt.internal.corext.template.java.JavaContext |
| *******************************************************************************/ |
| package org.eclipse.jdt.internal.corext.template.java; |
| |
| import org.eclipse.core.runtime.CoreException; |
| import org.eclipse.core.runtime.IStatus; |
| import org.eclipse.core.runtime.Status; |
| |
| import org.eclipse.jface.text.BadLocationException; |
| import org.eclipse.jface.text.Document; |
| import org.eclipse.jface.text.IDocument; |
| import org.eclipse.jface.text.templates.Template; |
| import org.eclipse.jface.text.templates.TemplateBuffer; |
| import org.eclipse.jface.text.templates.TemplateContextType; |
| import org.eclipse.jface.text.templates.TemplateException; |
| |
| import org.eclipse.jdt.core.ICompilationUnit; |
| |
| import org.eclipse.jdt.ui.JavaUI; |
| |
| import org.eclipse.jdt.internal.ui.JavaPlugin; |
| |
| public class TemplateUtils { |
| |
| private TemplateUtils() { |
| |
| } |
| |
| /** |
| * Evaluates a 'java' template in the context of a compilation unit |
| * |
| * @param template the template to be evaluated |
| * @param compilationUnit the compilation unit in which to evaluate the template |
| * @param position the position inside the compilation unit for which to evaluate the template |
| * @return the evaluated template |
| * @throws CoreException in case the template is of an unknown context type |
| * @throws BadLocationException in case the position is invalid in the compilation unit |
| * @throws TemplateException in case the evaluation fails |
| */ |
| public static String evaluateTemplate(Template template, ICompilationUnit compilationUnit, int position) throws CoreException, BadLocationException, TemplateException { |
| |
| TemplateContextType contextType= JavaPlugin.getDefault().getTemplateContextRegistry().getContextType(template.getContextTypeId()); |
| if (!(contextType instanceof CompilationUnitContextType)) |
| throw new CoreException(new Status(IStatus.ERROR, JavaUI.ID_PLUGIN, IStatus.ERROR, JavaTemplateMessages.JavaContext_error_message, null)); |
| |
| IDocument document= new Document(); |
| if (compilationUnit != null && compilationUnit.exists()) |
| document.set(compilationUnit.getSource()); |
| |
| CompilationUnitContext context= (CompilationUnitContext) ((CompilationUnitContextType) contextType).createContext(document, position, 0, compilationUnit); |
| context.setForceEvaluation(true); |
| |
| TemplateBuffer buffer= context.evaluate(template); |
| if (buffer == null) |
| return null; |
| return buffer.getString(); |
| } |
| } |