Mercurial > hg > truffle
annotate agent/src/share/classes/sun/jvm/hotspot/utilities/ConstantTag.java @ 1602:136b78722a08
6939203: JSR 292 needs method handle constants
Summary: Add new CP types CONSTANT_MethodHandle, CONSTANT_MethodType; extend 'ldc' bytecode.
Reviewed-by: twisti, never
author | jrose |
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date | Wed, 09 Jun 2010 18:50:45 -0700 |
parents | c18cbe5936b8 |
children | 083fde3b838e |
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) 2001, 2005, Oracle and/or its affiliates. All rights reserved. |
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6941466: Oracle rebranding changes for Hotspot repositories
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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 |
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
25 package sun.jvm.hotspot.utilities; | |
26 | |
27 public class ConstantTag { | |
28 // These replicated from the VM to save space | |
29 private static int JVM_CONSTANT_Utf8 = 1; | |
30 private static int JVM_CONSTANT_Unicode = 2; // unused | |
31 private static int JVM_CONSTANT_Integer = 3; | |
32 private static int JVM_CONSTANT_Float = 4; | |
33 private static int JVM_CONSTANT_Long = 5; | |
34 private static int JVM_CONSTANT_Double = 6; | |
35 private static int JVM_CONSTANT_Class = 7; | |
36 private static int JVM_CONSTANT_String = 8; | |
37 private static int JVM_CONSTANT_Fieldref = 9; | |
38 private static int JVM_CONSTANT_Methodref = 10; | |
39 private static int JVM_CONSTANT_InterfaceMethodref = 11; | |
40 private static int JVM_CONSTANT_NameAndType = 12; | |
1602 | 41 private static int JVM_CONSTANT_MethodHandle = 15; // JSR 292 |
42 private static int JVM_CONSTANT_MethodType = 16; // JSR 292 | |
0 | 43 private static int JVM_CONSTANT_Invalid = 0; // For bad value initialization |
44 private static int JVM_CONSTANT_UnresolvedClass = 100; // Temporary tag until actual use | |
45 private static int JVM_CONSTANT_ClassIndex = 101; // Temporary tag while constructing constant pool | |
46 private static int JVM_CONSTANT_UnresolvedString = 102; // Temporary tag until actual use | |
47 private static int JVM_CONSTANT_StringIndex = 103; // Temporary tag while constructing constant pool | |
48 private static int JVM_CONSTANT_UnresolvedClassInError = 104; // Resolution failed | |
1602 | 49 private static int JVM_CONSTANT_Object = 105; // Required for BoundMethodHandle arguments. |
50 | |
51 // JVM_CONSTANT_MethodHandle subtypes //FIXME: connect these to data structure | |
52 private static int JVM_REF_getField = 1; | |
53 private static int JVM_REF_getStatic = 2; | |
54 private static int JVM_REF_putField = 3; | |
55 private static int JVM_REF_putStatic = 4; | |
56 private static int JVM_REF_invokeVirtual = 5; | |
57 private static int JVM_REF_invokeStatic = 6; | |
58 private static int JVM_REF_invokeSpecial = 7; | |
59 private static int JVM_REF_newInvokeSpecial = 8; | |
60 private static int JVM_REF_invokeInterface = 9; | |
0 | 61 |
62 private byte tag; | |
63 | |
64 public ConstantTag(byte tag) { | |
65 this.tag = tag; | |
66 } | |
67 | |
68 public boolean isKlass() { return tag == JVM_CONSTANT_Class; } | |
69 public boolean isField () { return tag == JVM_CONSTANT_Fieldref; } | |
70 public boolean isMethod() { return tag == JVM_CONSTANT_Methodref; } | |
71 public boolean isInterfaceMethod() { return tag == JVM_CONSTANT_InterfaceMethodref; } | |
72 public boolean isString() { return tag == JVM_CONSTANT_String; } | |
73 public boolean isInt() { return tag == JVM_CONSTANT_Integer; } | |
74 public boolean isFloat() { return tag == JVM_CONSTANT_Float; } | |
75 public boolean isLong() { return tag == JVM_CONSTANT_Long; } | |
76 public boolean isDouble() { return tag == JVM_CONSTANT_Double; } | |
77 public boolean isNameAndType() { return tag == JVM_CONSTANT_NameAndType; } | |
78 public boolean isUtf8() { return tag == JVM_CONSTANT_Utf8; } | |
1602 | 79 public boolean isMethodHandle() { return tag == JVM_CONSTANT_MethodHandle; } |
80 public boolean isMethodType() { return tag == JVM_CONSTANT_MethodType; } | |
0 | 81 |
82 public boolean isInvalid() { return tag == JVM_CONSTANT_Invalid; } | |
83 | |
84 public boolean isUnresolvedKlass() { | |
85 return tag == JVM_CONSTANT_UnresolvedClass || tag == JVM_CONSTANT_UnresolvedClassInError; | |
86 } | |
87 public boolean isUnresolveKlassInError() { return tag == JVM_CONSTANT_UnresolvedClassInError; } | |
88 public boolean isKlassIndex() { return tag == JVM_CONSTANT_ClassIndex; } | |
89 public boolean isUnresolvedString() { return tag == JVM_CONSTANT_UnresolvedString; } | |
90 public boolean isStringIndex() { return tag == JVM_CONSTANT_StringIndex; } | |
91 | |
1602 | 92 public boolean isObject() { return tag == JVM_CONSTANT_Object; } |
93 | |
0 | 94 public boolean isKlassReference() { return isKlassIndex() || isUnresolvedKlass(); } |
95 public boolean isFieldOrMethod() { return isField() || isMethod() || isInterfaceMethod(); } | |
96 public boolean isSymbol() { return isUtf8(); } | |
97 } |