Mercurial > jdk8-mips64-public > hotspot / file revision

 /*

  * Copyright (c) 1999, 2012, Oracle and/or its affiliates. All rights reserved.

  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

  *

  * This code is free software; you can redistribute it and/or modify it

  * under the terms of the GNU General Public License version 2 only, as

  * published by the Free Software Foundation.

  *

  * This code is distributed in the hope that it will be useful, but WITHOUT

  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

  * version 2 for more details (a copy is included in the LICENSE file that

  * accompanied this code).

  *

  * You should have received a copy of the GNU General Public License version

  * 2 along with this work; if not, write to the Free Software Foundation,

  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

  *

  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

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 #ifndef SHARE_VM_CI_CISYMBOL_HPP

 #define SHARE_VM_CI_CISYMBOL_HPP

 #include "ci/ciBaseObject.hpp"

 #include "ci/ciObject.hpp"

 #include "ci/ciObjectFactory.hpp"

 #include "classfile/vmSymbols.hpp"

 #include "oops/symbol.hpp"

 // ciSymbol

 //

 // This class represents a Symbol* in the HotSpot virtual

 // machine.

 class ciSymbol : public ciBaseObject {

   Symbol* _symbol;

   CI_PACKAGE_ACCESS

   // These friends all make direct use of get_symbol:

   friend class ciEnv;

   friend class ciInstanceKlass;

   friend class ciSignature;

   friend class ciMethod;

   friend class ciObjArrayKlass;

 private:

   const vmSymbols::SID _sid;

   DEBUG_ONLY( bool sid_ok() { return vmSymbols::find_sid(get_symbol()) == _sid; } )

   ciSymbol(Symbol* s);  // normal case, for symbols not mentioned in vmSymbols

   ciSymbol(Symbol* s, vmSymbols::SID sid);   // for use with vmSymbols

   Symbol* get_symbol() const { return _symbol; }

   const char* type_string() { return "ciSymbol"; }

   void print_impl(outputStream* st);

   // This is public in Symbol* but private here, because the base can move:

   const jbyte* base();

   // Make a ciSymbol from a C string (implementation).

   static ciSymbol* make_impl(const char* s);

 public:

   // The enumeration ID from vmSymbols, or vmSymbols::NO_SID if none.

   vmSymbols::SID sid() const { return _sid; }

   // The text of the symbol as a null-terminated utf8 string.

   const char* as_utf8();

   int         utf8_length();

   // Return the i-th utf8 byte, where i < utf8_length

   int         byte_at(int i);

   // Tests if the symbol starts with the given prefix.

   bool starts_with(const char* prefix, int len) const;

   // Determines where the symbol contains the given substring.

   int index_of_at(int i, const char* str, int len) const;

   void print_symbol_on(outputStream* st);

   void print_symbol() {

     print_symbol_on(tty);

   }

   // Make a ciSymbol from a C string.

   // Consider adding to vmSymbols.hpp instead of using this constructor.

   // (Your code will be less subject to typographical bugs.)

   static ciSymbol* make(const char* s);

 #define CI_SYMBOL_DECLARE(name, ignore_def) \

   static ciSymbol* name() { return ciObjectFactory::vm_symbol_at(vmSymbols::VM_SYMBOL_ENUM_NAME(name)); }

   VM_SYMBOLS_DO(CI_SYMBOL_DECLARE, CI_SYMBOL_DECLARE)

 #undef CI_SYMBOL_DECLARE

   void print() {

     _symbol->print();

   }

   virtual bool is_symbol() const       { return true; }

   // Are two ciSymbols equal?

   bool equals(ciSymbol* obj) { return this->_symbol == obj->get_symbol(); }

   bool is_signature_polymorphic_name() const;

 };

 #endif // SHARE_VM_CI_CISYMBOL_HPP