113 lines
3.6 KiB
C++
113 lines
3.6 KiB
C++
/*
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* Copyright (c) 1999, 2011, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*
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*/
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#ifndef SHARE_VM_CI_CISYMBOL_HPP
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#define SHARE_VM_CI_CISYMBOL_HPP
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#include "ci/ciObject.hpp"
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#include "ci/ciObjectFactory.hpp"
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#include "classfile/vmSymbols.hpp"
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#include "oops/symbol.hpp"
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// ciSymbol
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//
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// This class represents a Symbol* in the HotSpot virtual
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// machine.
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class ciSymbol : public ResourceObj {
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Symbol* _symbol;
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uint _ident;
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CI_PACKAGE_ACCESS
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// These friends all make direct use of get_symbol:
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friend class ciEnv;
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friend class ciInstanceKlass;
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friend class ciSignature;
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friend class ciMethod;
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friend class ciObjArrayKlass;
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private:
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const vmSymbols::SID _sid;
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DEBUG_ONLY( bool sid_ok() { return vmSymbols::find_sid(get_symbol()) == _sid; } )
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ciSymbol(Symbol* s); // normal case, for symbols not mentioned in vmSymbols
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ciSymbol(Symbol* s, vmSymbols::SID sid); // for use with vmSymbols
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Symbol* get_symbol() const { return _symbol; }
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const char* type_string() { return "ciSymbol"; }
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void print_impl(outputStream* st);
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// This is public in Symbol* but private here, because the base can move:
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const jbyte* base();
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// Make a ciSymbol from a C string (implementation).
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static ciSymbol* make_impl(const char* s);
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void set_ident(uint id) { _ident = id; }
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public:
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// A number unique to this object.
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uint ident() { return _ident; }
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// The enumeration ID from vmSymbols, or vmSymbols::NO_SID if none.
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vmSymbols::SID sid() const { return _sid; }
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// The text of the symbol as a null-terminated utf8 string.
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const char* as_utf8();
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int utf8_length();
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// Return the i-th utf8 byte, where i < utf8_length
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int byte_at(int i);
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// Tests if the symbol starts with the given prefix.
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bool starts_with(const char* prefix, int len) const;
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// Determines where the symbol contains the given substring.
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int index_of_at(int i, const char* str, int len) const;
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void print_symbol_on(outputStream* st);
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void print_symbol() {
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print_symbol_on(tty);
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}
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// Make a ciSymbol from a C string.
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// Consider adding to vmSymbols.hpp instead of using this constructor.
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// (Your code will be less subject to typographical bugs.)
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static ciSymbol* make(const char* s);
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#define CI_SYMBOL_DECLARE(name, ignore_def) \
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static ciSymbol* name() { return ciObjectFactory::vm_symbol_at(vmSymbols::VM_SYMBOL_ENUM_NAME(name)); }
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VM_SYMBOLS_DO(CI_SYMBOL_DECLARE, CI_SYMBOL_DECLARE)
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#undef CI_SYMBOL_DECLARE
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void print() {
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_symbol->print();
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}
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// Are two ciSymbols equal?
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bool equals(ciSymbol* obj) { return this->_symbol == obj->get_symbol(); }
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};
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#endif // SHARE_VM_CI_CISYMBOL_HPP
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