View Javadoc

    1   /*
    2    * Copyright  2000-2004 The Apache Software Foundation
    3    *
    4    *  Licensed under the Apache License, Version 2.0 (the "License");
    5    *  you may not use this file except in compliance with the License.
    6    *  You may obtain a copy of the License at
    7    *
    8    *      http://www.apache.org/licenses/LICENSE-2.0
    9    *
    10   *  Unless required by applicable law or agreed to in writing, software
    11   *  distributed under the License is distributed on an "AS IS" BASIS,
    12   *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13   *  See the License for the specific language governing permissions and
    14   *  limitations under the License.
    15   *
    16   */
    17  package org.apache.bcel.generic;
    18
    19  import org.apache.bcel.ExceptionConstants;
    20
    21  /***
    22   * NEW - Create new object
    23   * <PRE>Stack: ... -&gt; ..., objectref</PRE>
    24   *
    25   * @version $Id: NEW.java 386056 2006-03-15 11:31:56Z tcurdt $
    26   * @author  <A HREF="mailto:m.dahm@gmx.de">M. Dahm</A>
    27   */
    28  public class NEW extends CPInstruction implements LoadClass, AllocationInstruction,
    29          ExceptionThrower, StackProducer {
    30
    31      /***
    32       * Empty constructor needed for the Class.newInstance() statement in
    33       * Instruction.readInstruction(). Not to be used otherwise.
    34       */
    35      NEW() {
    36      }
    37
    38
    39      public NEW(int index) {
    40          super(org.apache.bcel.Constants.NEW, index);
    41      }
    42
    43
    44      public Class[] getExceptions() {
    45          Class[] cs = new Class[2 + ExceptionConstants.EXCS_CLASS_AND_INTERFACE_RESOLUTION.length];
    46          System.arraycopy(ExceptionConstants.EXCS_CLASS_AND_INTERFACE_RESOLUTION, 0, cs, 0,
    47                  ExceptionConstants.EXCS_CLASS_AND_INTERFACE_RESOLUTION.length);
    48          cs[ExceptionConstants.EXCS_CLASS_AND_INTERFACE_RESOLUTION.length + 1] = ExceptionConstants.INSTANTIATION_ERROR;
    49          cs[ExceptionConstants.EXCS_CLASS_AND_INTERFACE_RESOLUTION.length] = ExceptionConstants.ILLEGAL_ACCESS_ERROR;
    50          return cs;
    51      }
    52
    53
    54      public ObjectType getLoadClassType( ConstantPoolGen cpg ) {
    55          return (ObjectType) getType(cpg);
    56      }
    57
    58
    59      /***
    60       * Call corresponding visitor method(s). The order is:
    61       * Call visitor methods of implemented interfaces first, then
    62       * call methods according to the class hierarchy in descending order,
    63       * i.e., the most specific visitXXX() call comes last.
    64       *
    65       * @param v Visitor object
    66       */
    67      public void accept( Visitor v ) {
    68          v.visitLoadClass(this);
    69          v.visitAllocationInstruction(this);
    70          v.visitExceptionThrower(this);
    71          v.visitStackProducer(this);
    72          v.visitTypedInstruction(this);
    73          v.visitCPInstruction(this);
    74          v.visitNEW(this);
    75      }
    76  }