1 /*
2 * Copyright (c) 1999, 2023, 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 "precompiled.hpp"
26 #include "ci/ciSymbol.hpp"
27 #include "ci/ciSymbols.hpp"
28 #include "ci/ciUtilities.inline.hpp"
29 #include "classfile/symbolTable.hpp"
30 #include "classfile/vmSymbols.hpp"
31 #include "memory/oopFactory.hpp"
32 #include "prims/methodHandles.hpp"
33
34 // ------------------------------------------------------------------
35 // ciSymbol::ciSymbol
36 ciSymbol::ciSymbol(Symbol* s, vmSymbolID sid)
37 : _symbol(s), _sid(sid)
38 {
39 assert(_symbol != nullptr, "adding null symbol");
40 _symbol->increment_refcount(); // increment ref count
41 assert(sid_ok(), "sid must be consistent with vmSymbols");
42 }
43
44 DEBUG_ONLY(bool ciSymbol::sid_ok() { return vmSymbols::find_sid(get_symbol()) == _sid; })
45
46 // ciSymbol
47 //
48 // This class represents a Symbol* in the HotSpot virtual
49 // machine.
50
51 // ------------------------------------------------------------------
52 // ciSymbol::as_utf8
53 //
54 // The text of the symbol as a null-terminated C string.
55 const char* ciSymbol::as_utf8() {
56 GUARDED_VM_QUICK_ENTRY(return get_symbol()->as_utf8();)
57 }
58
59 // The text of the symbol as a null-terminated C string.
60 const char* ciSymbol::as_quoted_ascii() {
61 GUARDED_VM_QUICK_ENTRY(return get_symbol()->as_quoted_ascii();)
62 }
63
64 // ------------------------------------------------------------------
65 // ciSymbol::base
66 const u1* ciSymbol::base() {
67 GUARDED_VM_ENTRY(return get_symbol()->base();)
68 }
69
70 // ------------------------------------------------------------------
71 // ciSymbol::char_at
72 char ciSymbol::char_at(int i) {
73 GUARDED_VM_ENTRY(return get_symbol()->char_at(i);)
74 }
75
76 // ------------------------------------------------------------------
77 // ciSymbol::starts_with
78 //
79 // Tests if the symbol starts with the given prefix.
80 bool ciSymbol::starts_with(const char* prefix, int len) const {
81 GUARDED_VM_ENTRY(return get_symbol()->starts_with(prefix, len);)
82 }
83 bool ciSymbol::starts_with(char prefix_char) const {
84 GUARDED_VM_ENTRY(return get_symbol()->starts_with(prefix_char);)
85 }
86
87 // ------------------------------------------------------------------
88 // ciSymbol::ends_with
89 //
90 // Tests if the symbol ends with the given suffix.
91 bool ciSymbol::ends_with(const char* suffix, int len) const {
92 GUARDED_VM_ENTRY(return get_symbol()->ends_with(suffix, len);)
93 }
94 bool ciSymbol::ends_with(char suffix_char) const {
95 GUARDED_VM_ENTRY(return get_symbol()->ends_with(suffix_char);)
96 }
97
98 bool ciSymbol::is_signature_polymorphic_name() const {
99 GUARDED_VM_ENTRY(return MethodHandles::is_signature_polymorphic_name(get_symbol());)
100 }
101
102 // ------------------------------------------------------------------
103 // ciSymbol::index_of
104 //
105 // Determines where the symbol contains the given substring.
106 int ciSymbol::index_of_at(int i, const char* str, int len) const {
107 GUARDED_VM_ENTRY(return get_symbol()->index_of_at(i, str, len);)
108 }
109
110 // ------------------------------------------------------------------
111 // ciSymbol::utf8_length
112 int ciSymbol::utf8_length() {
113 GUARDED_VM_ENTRY(return get_symbol()->utf8_length();)
114 }
115
116 // ------------------------------------------------------------------
117 // ciSymbol::print_impl
118 //
119 // Implementation of the print method
120 void ciSymbol::print_impl(outputStream* st) {
121 st->print(" value=");
122 print_symbol_on(st);
123 }
124
125 // ------------------------------------------------------------------
126 // ciSymbol::print_symbol_on
127 //
128 // Print the value of this symbol on an outputStream
129 void ciSymbol::print_symbol_on(outputStream *st) {
130 GUARDED_VM_ENTRY(get_symbol()->print_symbol_on(st);)
131 }
132
133 const char* ciSymbol::as_klass_external_name() const {
134 GUARDED_VM_ENTRY(return get_symbol()->as_klass_external_name(););
135 }
136
137 // ------------------------------------------------------------------
138 // ciSymbol::make_impl
139 //
140 // Make a ciSymbol from a C string (implementation).
141 ciSymbol* ciSymbol::make_impl(const char* s) {
142 EXCEPTION_CONTEXT;
143 TempNewSymbol sym = SymbolTable::new_symbol(s);
144 return CURRENT_THREAD_ENV->get_symbol(sym);
145 }
146
147 // ------------------------------------------------------------------
148 // ciSymbol::make
149 //
150 // Make a ciSymbol from a C string.
151 ciSymbol* ciSymbol::make(const char* s) {
152 GUARDED_VM_ENTRY(return make_impl(s);)
153 }