ASTStaticMethod.java :  » Ajax » aribaweb » ariba » util » expr » Java Open Source

//--------------------------------------------------------------------------
//  Copyright (c) 1998-2004, Drew Davidson and Luke Blanshard
//  All rights reserved.
//
//  Redistribution and use in source and binary forms, with or without
//  modification, are permitted provided that the following conditions are
//  met:
//
//  Redistributions of source code must retain the above copyright notice,
//  this list of conditions and the following disclaimer.
//  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.
//  Neither the name of the Drew Davidson nor the names of its contributors
//  may be used to endorse or promote products derived from this software
//  without specific prior written permission.
//
//  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
//  "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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//  FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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//  THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
//  DAMAGE.
//--------------------------------------------------------------------------
package ariba.util.expr;

/**
 * @author Luke Blanshard (blanshlu@netscape.net)
 * @author Drew Davidson (drew@ognl.org)
 */
class ASTStaticMethod extends SimpleNode
{
    private String className;
    private String methodName;

    public ASTStaticMethod(int id) {
        super(id);
    }

    public ASTStaticMethod(ExprParser p, int id) {
        super(p, id);
    }

      /** Called from parser action. */
    void init( String className, String methodName ) {
        this.className = className;
        this.methodName = methodName;
    }

    public String getClassName ()
    {
        return className;
    }

    public String getMethodName ()
    {
        return methodName;
    }

    protected Object getValueBody( ExprContext context, Object source ) throws ExprException
    {
        Object[]    args = ExprRuntime.getObjectArrayPool().create(jjtGetNumChildren());
        Object      root = context.getRoot();

        try {
            for ( int i=0, icount = args.length; i < icount; ++i )
                args[i] = children[i].getValue(context, root);

            return ExprRuntime.callStaticMethod( context, className, methodName, args );
        } finally {
            ExprRuntime.getObjectArrayPool().recycle(args);
        }
    }

    public String toString()
    {
        String      result = "@" + className + "@" + methodName;

        result = result + "(";
        if ((children != null) && (children.length > 0)) {
            for (int i = 0; i < children.length; i++) {
                if (i > 0) {
                    result = result + ", ";
                }
                result = result + children[i];
            }
        }
        result = result + ")";
        return result;
    }

    public void accept (ASTNodeVisitor visitor)
    {
        acceptChildren(visitor);
        visitor.visit(this);
    }
}