Mercurial > hg > truffle
annotate agent/src/share/classes/sun/jvm/hotspot/oops/FieldType.java @ 1913:3b2dea75431e
6984311: JSR 292 needs optional bootstrap method parameters
Summary: Allow CONSTANT_InvokeDynamic nodes to have any number of extra operands.
Reviewed-by: twisti
author | jrose |
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date | Sat, 30 Oct 2010 13:08:23 -0700 |
parents | c18cbe5936b8 |
children | f6f3bb0ee072 |
rev | line source |
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0 | 1 /* |
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6941466: Oracle rebranding changes for Hotspot repositories
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2 * Copyright (c) 2000, 2004, Oracle and/or its affiliates. All rights reserved. |
0 | 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 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
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20 * or visit www.oracle.com if you need additional information or have any |
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6941466: Oracle rebranding changes for Hotspot repositories
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
25 package sun.jvm.hotspot.oops; | |
26 | |
27 import java.io.*; | |
28 import sun.jvm.hotspot.runtime.BasicType; | |
29 import sun.jvm.hotspot.utilities.*; | |
30 | |
31 public class FieldType { | |
32 | |
33 private Symbol signature; | |
34 private char first; | |
35 | |
36 public FieldType(Symbol signature) { | |
37 this.signature = signature; | |
38 this.first = (char) signature.getByteAt(0); | |
39 if (Assert.ASSERTS_ENABLED) { | |
40 switch (this.first) { | |
41 case 'B': | |
42 case 'C': | |
43 case 'D': | |
44 case 'F': | |
45 case 'I': | |
46 case 'J': | |
47 case 'S': | |
48 case 'Z': | |
49 case 'L': | |
50 case '[': | |
51 break; // Ok. signature char known | |
52 default: | |
53 Assert.that(false, "Unknown char in field signature \"" + signature.asString() + "\": " + this.first); | |
54 } | |
55 } | |
56 } | |
57 | |
58 public boolean isOop() { return isObject() || isArray(); } | |
59 public boolean isByte() { return first == 'B'; } | |
60 public boolean isChar() { return first == 'C'; } | |
61 public boolean isDouble() { return first == 'D'; } | |
62 public boolean isFloat() { return first == 'F'; } | |
63 public boolean isInt() { return first == 'I'; } | |
64 public boolean isLong() { return first == 'J'; } | |
65 public boolean isShort() { return first == 'S'; } | |
66 public boolean isBoolean() { return first == 'Z'; } | |
67 public boolean isObject() { return first == 'L'; } | |
68 public boolean isArray() { return first == '['; } | |
69 | |
70 public static class ArrayInfo { | |
71 private int dimension; | |
72 private int elementBasicType; // See BasicType.java | |
73 // FIXME: consider adding name of element class | |
74 | |
75 public ArrayInfo(int dimension, int elementBasicType) { | |
76 this.dimension = dimension; | |
77 this.elementBasicType = elementBasicType; | |
78 } | |
79 | |
80 public int dimension() { return dimension; } | |
81 /** See BasicType.java */ | |
82 public int elementBasicType() { return elementBasicType; } | |
83 } | |
84 | |
85 /** Only valid for T_ARRAY; throws unspecified exception otherwise */ | |
86 public ArrayInfo getArrayInfo() { | |
87 int index = 1; | |
88 int dim = 1; | |
89 index = skipOptionalSize(signature, index); | |
90 while (signature.getByteAt(index) == '[') { | |
91 index++; | |
92 dim++; | |
93 skipOptionalSize(signature, index); | |
94 } | |
95 int elementType = BasicType.charToType((char) signature.getByteAt(index)); | |
96 return new ArrayInfo(dim, elementType); | |
97 } | |
98 | |
99 private int skipOptionalSize(Symbol sig, int index) { | |
100 byte c = sig.getByteAt(index); | |
101 while (c >= '0' && c <= '9') { | |
102 ++index; | |
103 c = sig.getByteAt(index); | |
104 } | |
105 return index; | |
106 } | |
107 } |