001    /*
002     * Copyright (C) 2010 eXo Platform SAS.
003     *
004     * This is free software; you can redistribute it and/or modify it
005     * under the terms of the GNU Lesser General Public License as
006     * published by the Free Software Foundation; either version 2.1 of
007     * the License, or (at your option) any later version.
008     *
009     * This software is distributed in the hope that it will be useful,
010     * but WITHOUT ANY WARRANTY; without even the implied warranty of
011     * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
012     * Lesser General Public License for more details.
013     *
014     * You should have received a copy of the GNU Lesser General Public
015     * License along with this software; if not, write to the Free
016     * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
017     * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
018     */
019    
020    package org.crsh.groovy;
021    
022    import org.codehaus.groovy.ast.ASTNode;
023    import org.codehaus.groovy.ast.AnnotatedNode;
024    import org.codehaus.groovy.ast.AnnotationNode;
025    import org.codehaus.groovy.ast.ClassNode;
026    import org.codehaus.groovy.ast.FieldNode;
027    import org.codehaus.groovy.ast.MethodNode;
028    import org.codehaus.groovy.ast.Parameter;
029    import org.codehaus.groovy.ast.expr.ConstantExpression;
030    import org.codehaus.groovy.ast.expr.Expression;
031    import org.codehaus.groovy.control.CompilePhase;
032    import org.codehaus.groovy.control.SourceUnit;
033    import org.codehaus.groovy.transform.ASTTransformation;
034    import org.codehaus.groovy.transform.GroovyASTTransformation;
035    import org.crsh.cmdline.annotations.Argument;
036    
037    import java.util.List;
038    
039    /**
040     * @author <a href="mailto:julien.viet@exoplatform.com">Julien Viet</a>
041     * @version $Revision$
042     */
043    @GroovyASTTransformation(phase= CompilePhase.INSTRUCTION_SELECTION)
044    public class ArgumentNameTransformer implements ASTTransformation {
045    
046      public void visit(ASTNode[] nodes, final SourceUnit source) {
047        for (ClassNode classNode : (List<ClassNode>)source.getAST().getClasses()) {
048    
049          //
050          for (FieldNode field : classNode.getFields()) {
051            String name = field.getName();
052            handle(name, field);
053          }
054    
055          //
056          for (MethodNode method : classNode.getMethods()) {
057            for (Parameter parameter : method.getParameters()) {
058              String name = parameter.getName();
059              handle(name, parameter);
060            }
061          }
062        }
063      }
064    
065      private void handle(String name, AnnotatedNode annotated) {
066        for (AnnotationNode ann : (List<AnnotationNode>)annotated.getAnnotations()) {
067          if (ann.getClassNode().getName().endsWith(Argument.class.getName())) {
068            Expression expr = ann.getMember("name");
069            if (expr == null) {
070              expr = new ConstantExpression(name);
071              ann.setMember("name", expr);
072            }
073          }
074        }
075      }
076    }