Mercurial > hg > graal-jvmci-8
comparison src/share/vm/runtime/fieldDescriptor.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 | c18cbe5936b8 |
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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 // A fieldDescriptor describes the attributes of a single field (instance or class variable). | |
26 // It needs the class constant pool to work (because it only holds indices into the pool | |
27 // rather than the actual info). | |
28 | |
29 class fieldDescriptor VALUE_OBJ_CLASS_SPEC { | |
30 private: | |
31 AccessFlags _access_flags; | |
32 int _name_index; | |
33 int _signature_index; | |
34 int _initial_value_index; | |
35 int _offset; | |
36 int _generic_signature_index; | |
37 int _index; // index into fields() array | |
38 constantPoolHandle _cp; | |
39 | |
40 public: | |
41 symbolOop name() const { return _cp->symbol_at(_name_index); } | |
42 symbolOop signature() const { return _cp->symbol_at(_signature_index); } | |
43 klassOop field_holder() const { return _cp->pool_holder(); } | |
44 constantPoolOop constants() const { return _cp(); } | |
45 AccessFlags access_flags() const { return _access_flags; } | |
46 oop loader() const; | |
47 // Offset (in words) of field from start of instanceOop / klassOop | |
48 int offset() const { return _offset; } | |
49 symbolOop generic_signature() const { return (_generic_signature_index > 0 ? _cp->symbol_at(_generic_signature_index) : (symbolOop)NULL); } | |
50 int index() const { return _index; } | |
51 typeArrayOop annotations() const; | |
52 | |
53 // Initial field value | |
54 bool has_initial_value() const { return _initial_value_index != 0; } | |
55 constantTag initial_value_tag() const; // The tag will return true on one of is_int(), is_long(), is_single(), is_double() | |
56 jint int_initial_value() const; | |
57 jlong long_initial_value() const; | |
58 jfloat float_initial_value() const; | |
59 jdouble double_initial_value() const; | |
60 oop string_initial_value(TRAPS) const; | |
61 | |
62 // Field signature type | |
63 BasicType field_type() const { return FieldType::basic_type(signature()); } | |
64 | |
65 // Access flags | |
66 bool is_public() const { return _access_flags.is_public(); } | |
67 bool is_private() const { return _access_flags.is_private(); } | |
68 bool is_protected() const { return _access_flags.is_protected(); } | |
69 bool is_package_private() const { return !is_public() && !is_private() && !is_protected(); } | |
70 | |
71 bool is_static() const { return _access_flags.is_static(); } | |
72 bool is_final() const { return _access_flags.is_final(); } | |
73 bool is_volatile() const { return _access_flags.is_volatile(); } | |
74 bool is_transient() const { return _access_flags.is_transient(); } | |
75 | |
76 bool is_synthetic() const { return _access_flags.is_synthetic(); } | |
77 | |
78 bool is_field_access_watched() const { return _access_flags.is_field_access_watched(); } | |
79 bool is_field_modification_watched() const | |
80 { return _access_flags.is_field_modification_watched(); } | |
81 void set_is_field_access_watched(const bool value) | |
82 { _access_flags.set_is_field_access_watched(value); } | |
83 void set_is_field_modification_watched(const bool value) | |
84 { _access_flags.set_is_field_modification_watched(value); } | |
85 | |
86 // Initialization | |
87 void initialize(klassOop k, int index); | |
88 | |
89 // Print | |
90 void print_on(outputStream* st) const PRODUCT_RETURN; | |
91 void print_on_for(outputStream* st, oop obj) PRODUCT_RETURN; | |
92 }; |