annotate src/share/vm/utilities/constantTag.hpp @ 470:ad8c8ca4ab0f

6785258: Update copyright year Summary: Update copyright for files that have been modified starting July 2008 to Dec 2008 Reviewed-by: katleman, ohair, tbell
author xdono
date Mon, 15 Dec 2008 16:55:11 -0800
parents a45484ea312d
children dd57230ba8fe
rev   line source
duke@0 1 /*
xdono@470 2 * Copyright 1997-2008 Sun Microsystems, Inc. All Rights Reserved.
duke@0 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
duke@0 4 *
duke@0 5 * This code is free software; you can redistribute it and/or modify it
duke@0 6 * under the terms of the GNU General Public License version 2 only, as
duke@0 7 * published by the Free Software Foundation.
duke@0 8 *
duke@0 9 * This code is distributed in the hope that it will be useful, but WITHOUT
duke@0 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
duke@0 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
duke@0 12 * version 2 for more details (a copy is included in the LICENSE file that
duke@0 13 * accompanied this code).
duke@0 14 *
duke@0 15 * You should have received a copy of the GNU General Public License version
duke@0 16 * 2 along with this work; if not, write to the Free Software Foundation,
duke@0 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
duke@0 18 *
duke@0 19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
duke@0 20 * CA 95054 USA or visit www.sun.com if you need additional information or
duke@0 21 * have any questions.
duke@0 22 *
duke@0 23 */
duke@0 24
duke@0 25 // constant tags in Java .class files
duke@0 26
duke@0 27
duke@0 28 enum {
duke@0 29 // See jvm.h for shared JVM_CONSTANT_XXX tags
duke@0 30 // NOTE: replicated in SA in vm/agent/sun/jvm/hotspot/utilities/ConstantTag.java
duke@0 31 // Hotspot specific tags
duke@0 32 JVM_CONSTANT_Invalid = 0, // For bad value initialization
duke@0 33 JVM_CONSTANT_InternalMin = 100, // First implementation tag (aside from bad value of course)
duke@0 34 JVM_CONSTANT_UnresolvedClass = 100, // Temporary tag until actual use
duke@0 35 JVM_CONSTANT_ClassIndex = 101, // Temporary tag while constructing constant pool
duke@0 36 JVM_CONSTANT_UnresolvedString = 102, // Temporary tag until actual use
duke@0 37 JVM_CONSTANT_StringIndex = 103, // Temporary tag while constructing constant pool
duke@0 38 JVM_CONSTANT_UnresolvedClassInError = 104, // Error tag due to resolution error
duke@0 39 JVM_CONSTANT_InternalMax = 104 // Last implementation tag
duke@0 40 };
duke@0 41
duke@0 42
duke@0 43 class constantTag VALUE_OBJ_CLASS_SPEC {
duke@0 44 private:
duke@0 45 jbyte _tag;
duke@0 46 public:
duke@0 47 bool is_klass() const { return _tag == JVM_CONSTANT_Class; }
duke@0 48 bool is_field () const { return _tag == JVM_CONSTANT_Fieldref; }
duke@0 49 bool is_method() const { return _tag == JVM_CONSTANT_Methodref; }
duke@0 50 bool is_interface_method() const { return _tag == JVM_CONSTANT_InterfaceMethodref; }
duke@0 51 bool is_string() const { return _tag == JVM_CONSTANT_String; }
duke@0 52 bool is_int() const { return _tag == JVM_CONSTANT_Integer; }
duke@0 53 bool is_float() const { return _tag == JVM_CONSTANT_Float; }
duke@0 54 bool is_long() const { return _tag == JVM_CONSTANT_Long; }
duke@0 55 bool is_double() const { return _tag == JVM_CONSTANT_Double; }
duke@0 56 bool is_name_and_type() const { return _tag == JVM_CONSTANT_NameAndType; }
duke@0 57 bool is_utf8() const { return _tag == JVM_CONSTANT_Utf8; }
duke@0 58
duke@0 59 bool is_invalid() const { return _tag == JVM_CONSTANT_Invalid; }
duke@0 60
duke@0 61 bool is_unresolved_klass() const {
duke@0 62 return _tag == JVM_CONSTANT_UnresolvedClass || _tag == JVM_CONSTANT_UnresolvedClassInError;
duke@0 63 }
duke@0 64
duke@0 65 bool is_unresolved_klass_in_error() const {
duke@0 66 return _tag == JVM_CONSTANT_UnresolvedClassInError;
duke@0 67 }
duke@0 68
duke@0 69 bool is_klass_index() const { return _tag == JVM_CONSTANT_ClassIndex; }
duke@0 70 bool is_unresolved_string() const { return _tag == JVM_CONSTANT_UnresolvedString; }
duke@0 71 bool is_string_index() const { return _tag == JVM_CONSTANT_StringIndex; }
duke@0 72
duke@0 73 bool is_klass_reference() const { return is_klass_index() || is_unresolved_klass(); }
jrose@431 74 bool is_klass_or_reference() const{ return is_klass() || is_klass_reference(); }
duke@0 75 bool is_field_or_method() const { return is_field() || is_method() || is_interface_method(); }
duke@0 76 bool is_symbol() const { return is_utf8(); }
duke@0 77
duke@0 78 constantTag(jbyte tag) {
duke@0 79 assert((tag >= 0 && tag <= JVM_CONSTANT_NameAndType) ||
duke@0 80 (tag >= JVM_CONSTANT_InternalMin && tag <= JVM_CONSTANT_InternalMax), "Invalid constant tag");
duke@0 81 _tag = tag;
duke@0 82 }
duke@0 83
duke@0 84 jbyte value() { return _tag; }
duke@0 85
duke@0 86 void print_on(outputStream* st) const PRODUCT_RETURN;
duke@0 87 };