1 /*
2 * Copyright (c) 1999, 2009, 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
25 #include "incls/_precompiled.incl"
26 #include "incls/_ciSymbol.cpp.incl"
27
28 // ------------------------------------------------------------------
29 // ciSymbol::ciSymbol
30 //
31 // Preallocated handle variant. Used with handles from vmSymboHandles.
32 ciSymbol::ciSymbol(symbolHandle h_s, vmSymbols::SID sid)
33 : ciObject(h_s), _sid(sid)
34 {
35 assert(sid_ok(), "must be in vmSymbols");
36 }
37
38 // Normal case for non-famous symbols.
39 ciSymbol::ciSymbol(symbolOop s)
40 : ciObject(s), _sid(vmSymbols::NO_SID)
41 {
42 assert(sid_ok(), "must not be in vmSymbols");
43 }
44
45 // ciSymbol
46 //
47 // This class represents a symbolOop in the HotSpot virtual
48 // machine.
49
50 // ------------------------------------------------------------------
51 // ciSymbol::as_utf8
52 //
53 // The text of the symbol as a null-terminated C string.
54 const char* ciSymbol::as_utf8() {
55 VM_QUICK_ENTRY_MARK;
56 symbolOop s = get_symbolOop();
57 return s->as_utf8();
58 }
59
60 // ------------------------------------------------------------------
61 // ciSymbol::base
62 jbyte* ciSymbol::base() {
63 GUARDED_VM_ENTRY(return get_symbolOop()->base();)
64 }
65
66 // ------------------------------------------------------------------
67 // ciSymbol::byte_at
68 int ciSymbol::byte_at(int i) {
69 GUARDED_VM_ENTRY(return get_symbolOop()->byte_at(i);)
70 }
71
72 // ------------------------------------------------------------------
73 // ciSymbol::starts_with
74 //
75 // Tests if the symbol starts with the given prefix.
76 bool ciSymbol::starts_with(const char* prefix, int len) const {
77 GUARDED_VM_ENTRY(return get_symbolOop()->starts_with(prefix, len);)
78 }
79
80 // ------------------------------------------------------------------
81 // ciSymbol::index_of
82 //
83 // Determines where the symbol contains the given substring.
84 int ciSymbol::index_of_at(int i, const char* str, int len) const {
85 GUARDED_VM_ENTRY(return get_symbolOop()->index_of_at(i, str, len);)
86 }
87
88 // ------------------------------------------------------------------
89 // ciSymbol::utf8_length
90 int ciSymbol::utf8_length() {
91 GUARDED_VM_ENTRY(return get_symbolOop()->utf8_length();)
92 }
93
94 // ------------------------------------------------------------------
95 // ciSymbol::print_impl
96 //
97 // Implementation of the print method
98 void ciSymbol::print_impl(outputStream* st) {
99 st->print(" value=");
100 print_symbol_on(st);
101 }
102
103 // ------------------------------------------------------------------
104 // ciSymbol::print_symbol_on
105 //
106 // Print the value of this symbol on an outputStream
107 void ciSymbol::print_symbol_on(outputStream *st) {
108 GUARDED_VM_ENTRY(get_symbolOop()->print_symbol_on(st);)
109 }
110
111 // ------------------------------------------------------------------
112 // ciSymbol::make_impl
113 //
114 // Make a ciSymbol from a C string (implementation).
115 ciSymbol* ciSymbol::make_impl(const char* s) {
116 EXCEPTION_CONTEXT;
117 // For some reason, oopFactory::new_symbol doesn't declare its
118 // char* argument as const.
119 symbolOop sym = oopFactory::new_symbol((char*)s, (int)strlen(s), THREAD);
120 if (HAS_PENDING_EXCEPTION) {
121 CLEAR_PENDING_EXCEPTION;
122 CURRENT_THREAD_ENV->record_out_of_memory_failure();
123 return ciEnv::_unloaded_cisymbol;
124 }
125 return CURRENT_THREAD_ENV->get_object(sym)->as_symbol();
126 }
127
128 // ------------------------------------------------------------------
129 // ciSymbol::make
130 //
131 // Make a ciSymbol from a C string.
132 ciSymbol* ciSymbol::make(const char* s) {
133 GUARDED_VM_ENTRY(return make_impl(s);)
134 }