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

 /*

  * Copyright 1999-2009 Sun Microsystems, Inc.  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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

  * CA 95054 USA or visit www.sun.com if you need additional information or

  * have any questions.

  *

  */

 // ciSymbol

 //

 // This class represents a symbolOop in the HotSpot virtual

 // machine.

 class ciSymbol : public ciObject {

   CI_PACKAGE_ACCESS

   // These friends all make direct use of get_symbolOop:

   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_symbolOop()) == _sid; } )

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

   ciSymbol(symbolHandle s, vmSymbols::SID sid);   // for use with vmSymbolHandles

   symbolOop get_symbolOop() const { return (symbolOop)get_oop(); }

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

   void print_impl(outputStream* st);

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

   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;

   // What kind of ciObject is this?

   bool is_symbol() { return true; }

   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

 };