jdk8-mips64-public/hotspot: src/share/vm/utilities/constantTag.hpp@c18cbe5936b8

6941466: Oracle rebranding changes for Hotspot repositories
Summary: Change all the Sun copyrights to Oracle copyright
Reviewed-by: ohair

     1 /*

     2  * Copyright (c) 1997, 2008, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    20  * or visit www.oracle.com if you need additional information or have any

    21  * questions.

    22  *

    23  */

    25 // constant tags in Java .class files

    28 enum {

    29   // See jvm.h for shared JVM_CONSTANT_XXX tags

    30   // NOTE: replicated in SA in vm/agent/sun/jvm/hotspot/utilities/ConstantTag.java

    31   // Hotspot specific tags

    32   JVM_CONSTANT_Invalid                  = 0,    // For bad value initialization

    33   JVM_CONSTANT_InternalMin              = 100,  // First implementation tag (aside from bad value of course)

    34   JVM_CONSTANT_UnresolvedClass          = 100,  // Temporary tag until actual use

    35   JVM_CONSTANT_ClassIndex               = 101,  // Temporary tag while constructing constant pool

    36   JVM_CONSTANT_UnresolvedString         = 102,  // Temporary tag until actual use

    37   JVM_CONSTANT_StringIndex              = 103,  // Temporary tag while constructing constant pool

    38   JVM_CONSTANT_UnresolvedClassInError   = 104,  // Error tag due to resolution error

    39   JVM_CONSTANT_Object                   = 105,  // Required for BoundMethodHandle arguments.

    40   JVM_CONSTANT_InternalMax              = 105   // Last implementation tag

    41 };

    44 class constantTag VALUE_OBJ_CLASS_SPEC {

    45  private:

    46   jbyte _tag;

    47  public:

    48   bool is_klass() const             { return _tag == JVM_CONSTANT_Class; }

    49   bool is_field () const            { return _tag == JVM_CONSTANT_Fieldref; }

    50   bool is_method() const            { return _tag == JVM_CONSTANT_Methodref; }

    51   bool is_interface_method() const  { return _tag == JVM_CONSTANT_InterfaceMethodref; }

    52   bool is_string() const            { return _tag == JVM_CONSTANT_String; }

    53   bool is_int() const               { return _tag == JVM_CONSTANT_Integer; }

    54   bool is_float() const             { return _tag == JVM_CONSTANT_Float; }

    55   bool is_long() const              { return _tag == JVM_CONSTANT_Long; }

    56   bool is_double() const            { return _tag == JVM_CONSTANT_Double; }

    57   bool is_name_and_type() const     { return _tag == JVM_CONSTANT_NameAndType; }

    58   bool is_utf8() const              { return _tag == JVM_CONSTANT_Utf8; }

    60   bool is_invalid() const           { return _tag == JVM_CONSTANT_Invalid; }

    62   bool is_unresolved_klass() const {

    63     return _tag == JVM_CONSTANT_UnresolvedClass || _tag == JVM_CONSTANT_UnresolvedClassInError;

    64   }

    66   bool is_unresolved_klass_in_error() const {

    67     return _tag == JVM_CONSTANT_UnresolvedClassInError;

    68   }

    70   bool is_klass_index() const       { return _tag == JVM_CONSTANT_ClassIndex; }

    71   bool is_unresolved_string() const { return _tag == JVM_CONSTANT_UnresolvedString; }

    72   bool is_string_index() const      { return _tag == JVM_CONSTANT_StringIndex; }

    74   bool is_object() const            { return _tag == JVM_CONSTANT_Object; }

    76   bool is_klass_reference() const   { return is_klass_index() || is_unresolved_klass(); }

    77   bool is_klass_or_reference() const{ return is_klass() || is_klass_reference(); }

    78   bool is_field_or_method() const   { return is_field() || is_method() || is_interface_method(); }

    79   bool is_symbol() const            { return is_utf8(); }

    81   constantTag(jbyte tag) {

    82     assert((tag >= 0 && tag <= JVM_CONSTANT_NameAndType) ||

    83            (tag >= JVM_CONSTANT_InternalMin && tag <= JVM_CONSTANT_InternalMax), "Invalid constant tag");

    84     _tag = tag;

    85   }

    87   jbyte value()                      { return _tag; }

    89   void print_on(outputStream* st) const PRODUCT_RETURN;

    90 };

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