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
25package sun.jvm.hotspot.interpreter;
26
27import sun.jvm.hotspot.oops.*;
28import sun.jvm.hotspot.utilities.*;
29
30public class BytecodeNewArray extends Bytecode {
31  BytecodeNewArray(Method method, int bci) {
32    super(method, bci);
33  }
34
35  public int getType() {
36    return (int) javaByteAt(1);
37  }
38
39  public void verify() {
40    if (Assert.ASSERTS_ENABLED) {
41      Assert.that(isValid(), "check newarray");
42    }
43  }
44
45  public boolean isValid() {
46    boolean result = javaCode() == Bytecodes._newarray;
47    if (result == false) return false;
48    switch (getType()) {
49       case TypeArrayKlass.T_BOOLEAN:
50       case TypeArrayKlass.T_CHAR:
51       case TypeArrayKlass.T_FLOAT:
52       case TypeArrayKlass.T_DOUBLE:
53       case TypeArrayKlass.T_BYTE:
54       case TypeArrayKlass.T_SHORT:
55       case TypeArrayKlass.T_INT:
56       case TypeArrayKlass.T_LONG:
57          break;
58       default:
59          return false;
60     }
61
62     return true;
63  }
64
65  public String getTypeName() {
66     String result;
67     switch (getType()) {
68       case TypeArrayKlass.T_BOOLEAN:
69          result = "boolean";
70          break;
71
72       case TypeArrayKlass.T_CHAR:
73          result = "char";
74          break;
75
76       case TypeArrayKlass.T_FLOAT:
77          result = "float";
78          break;
79
80       case TypeArrayKlass.T_DOUBLE:
81          result = "double";
82          break;
83
84       case TypeArrayKlass.T_BYTE:
85          result = "byte";
86          break;
87
88       case TypeArrayKlass.T_SHORT:
89          result = "short";
90          break;
91
92       case TypeArrayKlass.T_INT:
93          result = "int";
94          break;
95
96       case TypeArrayKlass.T_LONG:
97          result = "long";
98          break;
99
100       default: // should not happen
101          result = "<invalid>";
102          break;
103     }
104
105     return result;
106  }
107
108  public static BytecodeNewArray at(Method method, int bci) {
109    BytecodeNewArray b = new BytecodeNewArray(method, bci);
110    if (Assert.ASSERTS_ENABLED) {
111      b.verify();
112    }
113    return b;
114  }
115
116  /** Like at, but returns null if the BCI is not at newarray  */
117  public static BytecodeNewArray atCheck(Method method, int bci) {
118    BytecodeNewArray b = new BytecodeNewArray(method, bci);
119    return (b.isValid() ? b : null);
120  }
121
122  public static BytecodeNewArray at(BytecodeStream bcs) {
123    return new BytecodeNewArray(bcs.method(), bcs.bci());
124  }
125
126  public String toString() {
127    StringBuffer buf = new StringBuffer();
128    buf.append("newarray");
129    buf.append(spaces);
130    buf.append(getTypeName());
131    return buf.toString();
132  }
133}
134