001    /*
002     * Copyright (C) 2012 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.lang.impl.groovy.ast;
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.cli.Argument;
036    
037    import java.util.List;
038    
039    @GroovyASTTransformation(phase= CompilePhase.INSTRUCTION_SELECTION)
040    public class ArgumentNameTransformer implements ASTTransformation {
041    
042      public void visit(ASTNode[] nodes, final SourceUnit source) {
043        for (ClassNode classNode : (List<ClassNode>)source.getAST().getClasses()) {
044    
045          //
046          for (FieldNode field : classNode.getFields()) {
047            String name = field.getName();
048            handle(name, field);
049          }
050    
051          //
052          for (MethodNode method : classNode.getMethods()) {
053            for (Parameter parameter : method.getParameters()) {
054              String name = parameter.getName();
055              handle(name, parameter);
056            }
057          }
058        }
059      }
060    
061      private void handle(String name, AnnotatedNode annotated) {
062        for (AnnotationNode ann : (List<AnnotationNode>)annotated.getAnnotations()) {
063          if (ann.getClassNode().getName().endsWith(Argument.class.getName())) {
064            Expression expr = ann.getMember("name");
065            if (expr == null) {
066              expr = new ConstantExpression(name);
067              ann.setMember("name", expr);
068            }
069          }
070        }
071      }
072    }