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annotate src/share/vm/ci/ciSymbol.hpp @ 4724:0841c0ec2ed6
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Reviewed-by: jcoomes
author | amurillo |
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date | Fri, 23 Dec 2011 15:29:34 -0800 |
parents | 1d1603768966 |
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0 | 1 /* |
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2 * Copyright (c) 1999, 2011, Oracle and/or its affiliates. All rights reserved. |
0 | 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 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #ifndef SHARE_VM_CI_CISYMBOL_HPP |
26 #define SHARE_VM_CI_CISYMBOL_HPP | |
27 | |
28 #include "ci/ciObject.hpp" | |
29 #include "ci/ciObjectFactory.hpp" | |
30 #include "classfile/vmSymbols.hpp" | |
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31 #include "oops/symbol.hpp" |
1972 | 32 |
0 | 33 // ciSymbol |
34 // | |
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35 // This class represents a Symbol* in the HotSpot virtual |
0 | 36 // machine. |
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37 class ciSymbol : public ResourceObj { |
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38 Symbol* _symbol; |
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39 uint _ident; |
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40 |
0 | 41 CI_PACKAGE_ACCESS |
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42 // These friends all make direct use of get_symbol: |
0 | 43 friend class ciEnv; |
44 friend class ciInstanceKlass; | |
45 friend class ciSignature; | |
46 friend class ciMethod; | |
47 friend class ciObjArrayKlass; | |
48 | |
49 private: | |
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50 const vmSymbols::SID _sid; |
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51 DEBUG_ONLY( bool sid_ok() { return vmSymbols::find_sid(get_symbol()) == _sid; } ) |
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52 |
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53 ciSymbol(Symbol* s); // normal case, for symbols not mentioned in vmSymbols |
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54 ciSymbol(Symbol* s, vmSymbols::SID sid); // for use with vmSymbols |
0 | 55 |
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56 Symbol* get_symbol() const { return _symbol; } |
0 | 57 |
58 const char* type_string() { return "ciSymbol"; } | |
59 | |
60 void print_impl(outputStream* st); | |
61 | |
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62 // This is public in Symbol* but private here, because the base can move: |
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63 const jbyte* base(); |
0 | 64 |
65 // Make a ciSymbol from a C string (implementation). | |
66 static ciSymbol* make_impl(const char* s); | |
67 | |
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68 void set_ident(uint id) { _ident = id; } |
0 | 69 public: |
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70 // A number unique to this object. |
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71 uint ident() { return _ident; } |
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72 |
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73 // The enumeration ID from vmSymbols, or vmSymbols::NO_SID if none. |
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74 vmSymbols::SID sid() const { return _sid; } |
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75 |
0 | 76 // The text of the symbol as a null-terminated utf8 string. |
77 const char* as_utf8(); | |
78 int utf8_length(); | |
79 | |
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80 // Return the i-th utf8 byte, where i < utf8_length |
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81 int byte_at(int i); |
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82 |
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83 // Tests if the symbol starts with the given prefix. |
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84 bool starts_with(const char* prefix, int len) const; |
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85 |
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86 // Determines where the symbol contains the given substring. |
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87 int index_of_at(int i, const char* str, int len) const; |
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88 |
0 | 89 void print_symbol_on(outputStream* st); |
90 void print_symbol() { | |
91 print_symbol_on(tty); | |
92 } | |
93 | |
94 // Make a ciSymbol from a C string. | |
95 // Consider adding to vmSymbols.hpp instead of using this constructor. | |
96 // (Your code will be less subject to typographical bugs.) | |
97 static ciSymbol* make(const char* s); | |
98 | |
99 #define CI_SYMBOL_DECLARE(name, ignore_def) \ | |
100 static ciSymbol* name() { return ciObjectFactory::vm_symbol_at(vmSymbols::VM_SYMBOL_ENUM_NAME(name)); } | |
101 VM_SYMBOLS_DO(CI_SYMBOL_DECLARE, CI_SYMBOL_DECLARE) | |
102 #undef CI_SYMBOL_DECLARE | |
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103 |
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104 void print() { |
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105 _symbol->print(); |
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106 } |
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107 |
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108 // Are two ciSymbols equal? |
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109 bool equals(ciSymbol* obj) { return this->_symbol == obj->get_symbol(); } |
0 | 110 }; |
1972 | 111 |
112 #endif // SHARE_VM_CI_CISYMBOL_HPP |