javaclassexpr.java

RESIN 3.2 最新源码

/*
 * Copyright (c) 1998-2006 Caucho Technology -- all rights reserved
 *
 * This file is part of Resin(R) Open Source
 *
 * Each copy or derived work must preserve the copyright notice and this
 * notice unmodified.
 *
 * Resin Open Source is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * Resin Open Source is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, or any warranty
 * of NON-INFRINGEMENT.  See the GNU General Public License for more
 * details.
 *
 * You should have received a copy of the GNU General Public License
 * along with Resin Open Source; if not, write to the
 *   Free SoftwareFoundation, Inc.
 *   59 Temple Place, Suite 330
 *   Boston, MA 02111-1307  USA
 *
 * @author Scott Ferguson
 */

package com.caucho.es.parser;

import com.caucho.es.ESException;

import java.io.IOException;
import java.lang.reflect.Modifier;

/**
 * Expression representing a java class object.
 */
class JavaClassExpr extends Expr {
  private String name;
  private Class javaClass;
  private TypeExpr javaType;

  JavaClassExpr(Block block, Class javaClass)
  {
    super(block);

    this.javaClass = javaClass;

    if (javaClass.getName().indexOf('.') < 0)
      block.function.cl.addJavaImport(javaClass.getName());
  }

  void setType(int type)
  {
  }

  int getType()
  {
    return TYPE_ES;
  }

  Expr getTypeExpr()
  {
    return null;
  }

  /**
   * The java type of a java class is java.lang.Class
   */
  Class getJavaType()
  {
    return Class.class;
  }

  /**
   * Returns the java class.
   */
  Class getJavaClass()
  {
    return javaClass;
  }

  CallExpr startNew()
    throws ESException
  {
    return new JavaNewExpr(block, javaClass);
  }

  CallExpr startCall()
    throws ESException
  {
    return new JavaNewExpr(block, javaClass);
  }

  void printImpl() throws IOException
  {
    if (! Modifier.isPublic(javaClass.getModifiers()))
      throw new IOException("can't create `" + javaClass.getName() + "'");
    
    cl.print("_env.wrapClass(" + javaClass.getName() + ".class)");
  }
}