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
020package org.crsh.lang.impl.groovy.ast;
021
022import org.codehaus.groovy.ast.ASTNode;
023import org.codehaus.groovy.ast.AnnotatedNode;
024import org.codehaus.groovy.ast.AnnotationNode;
025import org.codehaus.groovy.ast.ClassNode;
026import org.codehaus.groovy.ast.FieldNode;
027import org.codehaus.groovy.ast.MethodNode;
028import org.codehaus.groovy.ast.Parameter;
029import org.codehaus.groovy.ast.expr.ConstantExpression;
030import org.codehaus.groovy.ast.expr.Expression;
031import org.codehaus.groovy.control.CompilePhase;
032import org.codehaus.groovy.control.SourceUnit;
033import org.codehaus.groovy.transform.ASTTransformation;
034import org.codehaus.groovy.transform.GroovyASTTransformation;
035import org.crsh.cli.Argument;
036
037import java.util.List;
038
039@GroovyASTTransformation(phase= CompilePhase.INSTRUCTION_SELECTION)
040public 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}