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1   /*
2    * Copyright (c) 2002, Oracle and/or its affiliates. All rights reserved.
3    * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4    *
5    * This code is free software; you can redistribute it and/or modify it
6    * under the terms of the GNU General Public License version 2 only, as
7    * published by the Free Software Foundation.
8    *
9    * This code is distributed in the hope that it will be useful, but WITHOUT
10   * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11   * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
12   * version 2 for more details (a copy is included in the LICENSE file that
13   * accompanied this code).
14   *
15   * You should have received a copy of the GNU General Public License version
16   * 2 along with this work; if not, write to the Free Software Foundation,
17   * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18   *
19   * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20   * or visit www.oracle.com if you need additional information or have any
21   * questions.
22   *
23   */
24  
25  package sun.jvm.hotspot.interpreter;
26  
27  import sun.jvm.hotspot.oops.*;
28  import sun.jvm.hotspot.utilities.*;
29  
30  public class BytecodeNew extends BytecodeWithKlass {
31    BytecodeNew(Method method, int bci) {
32      super(method, bci);
33    }
34  
35    public InstanceKlass getNewKlass() {
36      return (InstanceKlass) getKlass();
37    }
38  
39    public void verify() {
40      if (Assert.ASSERTS_ENABLED) {
41        Assert.that(isValid(), "check new");
42      }
43    }
44  
45    public boolean isValid() {
46      return javaCode() == Bytecodes._new;
47    }
48  
49    public static BytecodeNew at(Method method, int bci) {
50      BytecodeNew b = new BytecodeNew(method, bci);
51      if (Assert.ASSERTS_ENABLED) {
52        b.verify();
53      }
54      return b;
55    }
56  
57    /** Like at, but returns null if the BCI is not at new  */
58    public static BytecodeNew atCheck(Method method, int bci) {
59      BytecodeNew b = new BytecodeNew(method, bci);
60      return (b.isValid() ? b : null);
61    }
62  
63    public static BytecodeNew at(BytecodeStream bcs) {
64      return new BytecodeNew(bcs.method(), bcs.bci());
65    }
66  }