| /******************************************************************************* |
| * Copyright (c) 2006, 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: |
| * IBM Corporation - initial API and implementation |
| * Sebastian Davids: sdavids@gmx.de - see bug 25376 |
| * Microsoft Corporation - moved template related code to jdt.core.manipulation - https://bugs.eclipse.org/549989 |
| *******************************************************************************/ |
| package org.eclipse.jdt.internal.corext.template.java; |
| |
| import java.util.ArrayList; |
| import java.util.Arrays; |
| import java.util.List; |
| |
| import org.eclipse.jface.text.templates.TemplateContext; |
| import org.eclipse.jface.text.templates.TemplateVariable; |
| import org.eclipse.jface.text.templates.TemplateVariableResolver; |
| |
| import org.eclipse.jdt.internal.ui.text.template.contentassist.MultiVariable; |
| |
| /** |
| * Resolves template variables to non-conflicting names that adhere to the naming conventions and |
| * match the parameter (fully qualified name). |
| * |
| * @since 3.3 |
| */ |
| public class NameResolver extends TemplateVariableResolver { |
| |
| private final String fDefaultType; |
| |
| /** |
| * Default ctor for instantiation by the extension point. |
| */ |
| public NameResolver() { |
| this("java.lang.Object"); //$NON-NLS-1$ |
| } |
| |
| NameResolver(String defaultType) { |
| fDefaultType= defaultType; |
| } |
| |
| /* |
| * @see org.eclipse.jface.text.templates.TemplateVariableResolver#resolve(org.eclipse.jface.text.templates.TemplateVariable, org.eclipse.jface.text.templates.TemplateContext) |
| */ |
| @Override |
| public void resolve(TemplateVariable variable, TemplateContext context) { |
| List<String> params= variable.getVariableType().getParams(); |
| String param; |
| if (params.size() == 0) |
| param= fDefaultType; |
| else |
| param= params.get(0); |
| IJavaContext jc= (IJavaContext) context; |
| TemplateVariable ref= jc.getTemplateVariable(param); |
| MultiVariable mv= (MultiVariable) variable; |
| if (ref instanceof MultiVariable) { |
| // reference is another variable |
| MultiVariable refVar= (MultiVariable) ref; |
| jc.addDependency(refVar, mv); |
| |
| refVar.getAllChoices(); |
| Object[] types= flatten(refVar.getAllChoices()); |
| for (int i= 0; i < types.length; i++) { |
| String[] names= jc.suggestVariableNames(mv.toString(types[i])); |
| mv.setChoices(types[i], names); |
| } |
| |
| mv.setKey(refVar.getCurrentChoice()); |
| jc.markAsUsed(mv.getDefaultValue()); |
| } else { |
| // reference is a Java type name |
| jc.addImport(param); |
| String[] names= jc.suggestVariableNames(param); |
| mv.setChoices(names); |
| jc.markAsUsed(names[0]); |
| } |
| } |
| |
| private Object[] flatten(Object[][] allValues) { |
| List<Object> flattened= new ArrayList<>(allValues.length); |
| for (int i= 0; i < allValues.length; i++) { |
| flattened.addAll(Arrays.asList(allValues[i])); |
| } |
| return flattened.toArray(new Object[flattened.size()]); |
| } |
| } |