groovy-core/src/main/org/codehaus/groovy/ast/AnnotationNode.java

/*
 $Id$

 Copyright 2003 (C) James Strachan and Bob Mcwhirter. All Rights Reserved.

 Redistribution and use of this software and associated documentation
 ("Software"), with or without modification, are permitted provided
 that the following conditions are met:

 1. Redistributions of source code must retain copyright
    statements and notices.  Redistributions must also contain a
    copy of this document.

 2. Redistributions in binary form must reproduce the
    above copyright notice, this list of conditions and the
    following disclaimer in the documentation and/or other
    materials provided with the distribution.

 3. The name "groovy" must not be used to endorse or promote
    products derived from this Software without prior written
    permission of The Codehaus.  For written permission,
    please contact info@codehaus.org.

 4. Products derived from this Software may not be called "groovy"
    nor may "groovy" appear in their names without prior written
    permission of The Codehaus. "groovy" is a registered
    trademark of The Codehaus.

 5. Due credit should be given to The Codehaus -
    http://groovy.codehaus.org/

 THIS SOFTWARE IS PROVIDED BY THE CODEHAUS AND CONTRIBUTORS
 ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT
 NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
 FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL
 THE CODEHAUS OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
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 (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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 */
package org.codehaus.groovy.ast;

import org.codehaus.groovy.ast.expr.Expression;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;


/**
 * Represents an annotation which can be attached to interfaces, classes, methods and fields.
 * 
 * @author <a href="mailto:jstrachan@protique.com">James Strachan</a>
 * @version $Revision$
 */
public class AnnotationNode extends ASTNode {
    private ClassNode classNode;
    private Map members = new HashMap();

    public AnnotationNode(ClassNode classNode) {
        this.classNode = classNode;
    }

    public ClassNode getClassNode() {
        return classNode;
    }

    public Map getMembers() {
        return members;
    }
    
    public Expression getMember(String name) {
        return (Expression) members.get(name);
    }
    
    public void addMember(String name, Expression value) {
        Expression oldValue = (Expression) members.get(name);
        if (oldValue == null) {
            members.put(name, value);
        }
        else {
            List list = null;
            if (oldValue instanceof List) {
                list = (List) oldValue;
            }
            else {
                list = new ArrayList();
                list.add(oldValue);
                members.put(name, list);
            }
            list.add(value);
        }
    }

    public void setMember(String name, Expression value) {
        members.put(name, value);
    }
    
    public boolean isBuiltIn(){
        return false;
    }
    
}