| /******************************************************************************* |
| * Copyright (c) 2000, 2018 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: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.jdt.internal.core.manipulation; |
| |
| import java.util.Iterator; |
| |
| import org.eclipse.core.runtime.Assert; |
| |
| import org.eclipse.core.resources.IProject; |
| |
| import org.eclipse.jface.text.BadLocationException; |
| import org.eclipse.jface.text.DefaultLineTracker; |
| import org.eclipse.jface.text.ILineTracker; |
| import org.eclipse.jface.text.IRegion; |
| import org.eclipse.jface.text.templates.Template; |
| import org.eclipse.jface.text.templates.TemplateBuffer; |
| import org.eclipse.jface.text.templates.TemplateContext; |
| import org.eclipse.jface.text.templates.TemplateException; |
| import org.eclipse.jface.text.templates.TemplateTranslator; |
| import org.eclipse.jface.text.templates.TemplateVariableResolver; |
| |
| import org.eclipse.jdt.core.ICompilationUnit; |
| import org.eclipse.jdt.core.IJavaProject; |
| import org.eclipse.jdt.core.manipulation.JavaManipulation; |
| |
| public class CodeTemplateContext extends TemplateContext { |
| |
| private String fLineDelimiter; |
| private IJavaProject fProject; |
| |
| public CodeTemplateContext(String contextTypeName, IJavaProject project, String lineDelim) { |
| super(JavaManipulation.getCodeTemplateContextRegistry().getContextType(contextTypeName)); |
| fLineDelimiter= lineDelim; |
| fProject= project; |
| } |
| |
| @Override |
| public <T> T getAdapter(Class<T> adapter) { |
| if(adapter == IProject.class) { |
| return adapter.cast(getJavaProject().getProject()); |
| } |
| return super.getAdapter(adapter); |
| } |
| |
| public IJavaProject getJavaProject() { |
| return fProject; |
| } |
| |
| /* |
| * @see org.eclipse.jdt.internal.corext.template.TemplateContext#evaluate(org.eclipse.jdt.internal.corext.template.Template) |
| */ |
| @Override |
| public TemplateBuffer evaluate(Template template) throws BadLocationException, TemplateException { |
| // test that all variables are defined |
| Iterator<TemplateVariableResolver> iterator= getContextType().resolvers(); |
| while (iterator.hasNext()) { |
| TemplateVariableResolver var= iterator.next(); |
| if (var instanceof CodeTemplateContextType.CodeTemplateVariableResolver) { |
| Assert.isNotNull(getVariable(var.getType()), "Variable " + var.getType() + "not defined"); //$NON-NLS-1$ //$NON-NLS-2$ |
| } |
| } |
| |
| if (!canEvaluate(template)) |
| return null; |
| |
| String pattern= changeLineDelimiter(template.getPattern(), fLineDelimiter); |
| |
| TemplateTranslator translator= new TemplateTranslator(); |
| TemplateBuffer buffer= translator.translate(pattern); |
| getContextType().resolve(buffer, this); |
| return buffer; |
| } |
| |
| private static String changeLineDelimiter(String code, String lineDelim) { |
| try { |
| ILineTracker tracker= new DefaultLineTracker(); |
| tracker.set(code); |
| int nLines= tracker.getNumberOfLines(); |
| if (nLines == 1) { |
| return code; |
| } |
| |
| StringBuilder buf= new StringBuilder(); |
| for (int i= 0; i < nLines; i++) { |
| if (i != 0) { |
| buf.append(lineDelim); |
| } |
| IRegion region = tracker.getLineInformation(i); |
| String line= code.substring(region.getOffset(), region.getOffset() + region.getLength()); |
| buf.append(line); |
| } |
| return buf.toString(); |
| } catch (BadLocationException e) { |
| // can not happen |
| return code; |
| } |
| } |
| |
| @Override |
| public boolean canEvaluate(Template template) { |
| return true; |
| } |
| |
| public void setCompilationUnitVariables(ICompilationUnit cu) { |
| setVariable(CodeTemplateContextType.FILENAME, cu.getElementName()); |
| setVariable(CodeTemplateContextType.PACKAGENAME, cu.getParent().getElementName()); |
| setVariable(CodeTemplateContextType.PROJECTNAME, cu.getJavaProject().getElementName()); |
| } |
| |
| } |