| /******************************************************************************* |
| * Copyright (c) 2016, 2017 Obeo. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * Obeo - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.acceleo.aql.evaluation; |
| |
| import java.util.ArrayList; |
| import java.util.HashMap; |
| import java.util.LinkedHashSet; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Set; |
| |
| import org.eclipse.acceleo.Template; |
| import org.eclipse.acceleo.Variable; |
| import org.eclipse.acceleo.VisibilityKind; |
| import org.eclipse.acceleo.aql.AcceleoEnvironment; |
| import org.eclipse.acceleo.query.ast.Call; |
| import org.eclipse.acceleo.query.parser.AstValidator; |
| import org.eclipse.acceleo.query.runtime.IReadOnlyQueryEnvironment; |
| import org.eclipse.acceleo.query.runtime.IValidationResult; |
| import org.eclipse.acceleo.query.runtime.impl.ValidationServices; |
| import org.eclipse.acceleo.query.validation.type.ClassType; |
| import org.eclipse.acceleo.query.validation.type.IType; |
| |
| /** |
| * Specific implementation of an IService wrapping an Acceleo Query. |
| * |
| * @author <a href="mailto:laurent.goubet@obeo.fr">Laurent Goubet</a> |
| */ |
| public class TemplateService extends AbstractModuleElementService { |
| |
| /** The underlying template. */ |
| private final Template template; |
| |
| /** |
| * Wraps the given template as an IService. |
| * |
| * @param env |
| * The current evaluation environment. |
| * @param template |
| * The wrapped template. |
| */ |
| public TemplateService(AcceleoEnvironment env, Template template) { |
| super(env); |
| this.template = template; |
| } |
| |
| @Override |
| public Template getModuleElement() { |
| return template; |
| } |
| |
| @Override |
| public VisibilityKind getVisibility() { |
| return template.getVisibility(); |
| } |
| |
| @Override |
| public String getName() { |
| return template.getName(); |
| } |
| |
| @Override |
| public List<IType> getParameterTypes(IReadOnlyQueryEnvironment queryEnvironment) { |
| final List<IType> result = new ArrayList<IType>(); |
| final AstValidator validator = new AstValidator(new ValidationServices(queryEnvironment)); |
| for (Variable var : template.getParameters()) { |
| IType rawType = validator.getDeclarationTypes(queryEnvironment, validator.validate(null, var |
| .getType()).getPossibleTypes(var.getType().getAst())).iterator().next(); |
| // TODO for now, using only the raw variable type, do we need special handling for collections? |
| result.add(rawType); |
| } |
| return result; |
| } |
| |
| @Override |
| public int getNumberOfParameters() { |
| return template.getParameters().size(); |
| } |
| |
| @Override |
| public Set<IType> getType(Call call, ValidationServices services, IValidationResult validationResult, |
| IReadOnlyQueryEnvironment queryEnvironment, List<IType> argTypes) { |
| Set<IType> result = new LinkedHashSet<IType>(); |
| result.add(new ClassType(queryEnvironment, String.class)); |
| return result; |
| } |
| |
| @Override |
| protected Object internalInvoke(Object[] arguments) throws Exception { |
| final Map<String, Object> variables = new HashMap<String, Object>(); |
| for (int i = 0; i < arguments.length; i++) { |
| Variable var = template.getParameters().get(i); |
| variables.put(var.getName(), arguments[i]); |
| } |
| |
| return getAcceleoEvaluator().generate(template, variables); |
| } |
| } |