Mercurial > hg > graal-jvmci-8
comparison src/share/vm/utilities/constantTag.hpp @ 0:a61af66fc99e jdk7-b24
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author | duke |
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date | Sat, 01 Dec 2007 00:00:00 +0000 |
parents | |
children | a45484ea312d |
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-1:000000000000 | 0:a61af66fc99e |
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1 /* | |
2 * Copyright 1997-2005 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, | |
20 * CA 95054 USA or visit www.sun.com if you need additional information or | |
21 * have any questions. | |
22 * | |
23 */ | |
24 | |
25 // constant tags in Java .class files | |
26 | |
27 | |
28 enum { | |
29 // See jvm.h for shared JVM_CONSTANT_XXX tags | |
30 // NOTE: replicated in SA in vm/agent/sun/jvm/hotspot/utilities/ConstantTag.java | |
31 // Hotspot specific tags | |
32 JVM_CONSTANT_Invalid = 0, // For bad value initialization | |
33 JVM_CONSTANT_InternalMin = 100, // First implementation tag (aside from bad value of course) | |
34 JVM_CONSTANT_UnresolvedClass = 100, // Temporary tag until actual use | |
35 JVM_CONSTANT_ClassIndex = 101, // Temporary tag while constructing constant pool | |
36 JVM_CONSTANT_UnresolvedString = 102, // Temporary tag until actual use | |
37 JVM_CONSTANT_StringIndex = 103, // Temporary tag while constructing constant pool | |
38 JVM_CONSTANT_UnresolvedClassInError = 104, // Error tag due to resolution error | |
39 JVM_CONSTANT_InternalMax = 104 // Last implementation tag | |
40 }; | |
41 | |
42 | |
43 class constantTag VALUE_OBJ_CLASS_SPEC { | |
44 private: | |
45 jbyte _tag; | |
46 public: | |
47 bool is_klass() const { return _tag == JVM_CONSTANT_Class; } | |
48 bool is_field () const { return _tag == JVM_CONSTANT_Fieldref; } | |
49 bool is_method() const { return _tag == JVM_CONSTANT_Methodref; } | |
50 bool is_interface_method() const { return _tag == JVM_CONSTANT_InterfaceMethodref; } | |
51 bool is_string() const { return _tag == JVM_CONSTANT_String; } | |
52 bool is_int() const { return _tag == JVM_CONSTANT_Integer; } | |
53 bool is_float() const { return _tag == JVM_CONSTANT_Float; } | |
54 bool is_long() const { return _tag == JVM_CONSTANT_Long; } | |
55 bool is_double() const { return _tag == JVM_CONSTANT_Double; } | |
56 bool is_name_and_type() const { return _tag == JVM_CONSTANT_NameAndType; } | |
57 bool is_utf8() const { return _tag == JVM_CONSTANT_Utf8; } | |
58 | |
59 bool is_invalid() const { return _tag == JVM_CONSTANT_Invalid; } | |
60 | |
61 bool is_unresolved_klass() const { | |
62 return _tag == JVM_CONSTANT_UnresolvedClass || _tag == JVM_CONSTANT_UnresolvedClassInError; | |
63 } | |
64 | |
65 bool is_unresolved_klass_in_error() const { | |
66 return _tag == JVM_CONSTANT_UnresolvedClassInError; | |
67 } | |
68 | |
69 bool is_klass_index() const { return _tag == JVM_CONSTANT_ClassIndex; } | |
70 bool is_unresolved_string() const { return _tag == JVM_CONSTANT_UnresolvedString; } | |
71 bool is_string_index() const { return _tag == JVM_CONSTANT_StringIndex; } | |
72 | |
73 bool is_klass_reference() const { return is_klass_index() || is_unresolved_klass(); } | |
74 bool is_field_or_method() const { return is_field() || is_method() || is_interface_method(); } | |
75 bool is_symbol() const { return is_utf8(); } | |
76 | |
77 constantTag(jbyte tag) { | |
78 assert((tag >= 0 && tag <= JVM_CONSTANT_NameAndType) || | |
79 (tag >= JVM_CONSTANT_InternalMin && tag <= JVM_CONSTANT_InternalMax), "Invalid constant tag"); | |
80 _tag = tag; | |
81 } | |
82 | |
83 jbyte value() { return _tag; } | |
84 | |
85 void print_on(outputStream* st) const PRODUCT_RETURN; | |
86 }; |