jdk8-mips64-public/hotspot: src/share/vm/ci/ciSymbol.hpp@4ce7240d622c

     1 /*

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

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

    21  * have any questions.

    22  *

    23  */

    25 // ciSymbol

    26 //

    27 // This class represents a symbolOop in the HotSpot virtual

    28 // machine.

    29 class ciSymbol : public ciObject {

    30   CI_PACKAGE_ACCESS

    31   // These friends all make direct use of get_symbolOop:

    32   friend class ciEnv;

    33   friend class ciInstanceKlass;

    34   friend class ciSignature;

    35   friend class ciMethod;

    36   friend class ciObjArrayKlass;

    38 private:

    39   ciSymbol(symbolOop s) : ciObject(s) {}

    40   ciSymbol(symbolHandle s);   // for use with vmSymbolHandles

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

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

    46   void print_impl(outputStream* st);

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

    49   jbyte*      base();

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

    52   static ciSymbol* make_impl(const char* s);

    54 public:

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

    56   const char* as_utf8();

    57   int         utf8_length();

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

    60   int         byte_at(int i);

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

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

    65   // Determines where the symbol contains the given substring.

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

    68   // What kind of ciObject is this?

    69   bool is_symbol() { return true; }

    71   void print_symbol_on(outputStream* st);

    72   void print_symbol() {

    73     print_symbol_on(tty);

    74   }

    76   // Make a ciSymbol from a C string.

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

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

    79   static ciSymbol* make(const char* s);

    81 #define CI_SYMBOL_DECLARE(name, ignore_def) \

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

    83   VM_SYMBOLS_DO(CI_SYMBOL_DECLARE, CI_SYMBOL_DECLARE)

    84 #undef CI_SYMBOL_DECLARE

    85 };

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