1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/src/share/vm/utilities/constantTag.hpp Sat Dec 01 00:00:00 2007 +0000
1.3 @@ -0,0 +1,86 @@
1.4 +/*
1.5 + * Copyright 1997-2005 Sun Microsystems, Inc. All Rights Reserved.
1.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
1.7 + *
1.8 + * This code is free software; you can redistribute it and/or modify it
1.9 + * under the terms of the GNU General Public License version 2 only, as
1.10 + * published by the Free Software Foundation.
1.11 + *
1.12 + * This code is distributed in the hope that it will be useful, but WITHOUT
1.13 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
1.14 + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
1.15 + * version 2 for more details (a copy is included in the LICENSE file that
1.16 + * accompanied this code).
1.17 + *
1.18 + * You should have received a copy of the GNU General Public License version
1.19 + * 2 along with this work; if not, write to the Free Software Foundation,
1.20 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
1.21 + *
1.22 + * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
1.23 + * CA 95054 USA or visit www.sun.com if you need additional information or
1.24 + * have any questions.
1.25 + *
1.26 + */
1.27 +
1.28 +// constant tags in Java .class files
1.29 +
1.30 +
1.31 +enum {
1.32 + // See jvm.h for shared JVM_CONSTANT_XXX tags
1.33 + // NOTE: replicated in SA in vm/agent/sun/jvm/hotspot/utilities/ConstantTag.java
1.34 + // Hotspot specific tags
1.35 + JVM_CONSTANT_Invalid = 0, // For bad value initialization
1.36 + JVM_CONSTANT_InternalMin = 100, // First implementation tag (aside from bad value of course)
1.37 + JVM_CONSTANT_UnresolvedClass = 100, // Temporary tag until actual use
1.38 + JVM_CONSTANT_ClassIndex = 101, // Temporary tag while constructing constant pool
1.39 + JVM_CONSTANT_UnresolvedString = 102, // Temporary tag until actual use
1.40 + JVM_CONSTANT_StringIndex = 103, // Temporary tag while constructing constant pool
1.41 + JVM_CONSTANT_UnresolvedClassInError = 104, // Error tag due to resolution error
1.42 + JVM_CONSTANT_InternalMax = 104 // Last implementation tag
1.43 +};
1.44 +
1.45 +
1.46 +class constantTag VALUE_OBJ_CLASS_SPEC {
1.47 + private:
1.48 + jbyte _tag;
1.49 + public:
1.50 + bool is_klass() const { return _tag == JVM_CONSTANT_Class; }
1.51 + bool is_field () const { return _tag == JVM_CONSTANT_Fieldref; }
1.52 + bool is_method() const { return _tag == JVM_CONSTANT_Methodref; }
1.53 + bool is_interface_method() const { return _tag == JVM_CONSTANT_InterfaceMethodref; }
1.54 + bool is_string() const { return _tag == JVM_CONSTANT_String; }
1.55 + bool is_int() const { return _tag == JVM_CONSTANT_Integer; }
1.56 + bool is_float() const { return _tag == JVM_CONSTANT_Float; }
1.57 + bool is_long() const { return _tag == JVM_CONSTANT_Long; }
1.58 + bool is_double() const { return _tag == JVM_CONSTANT_Double; }
1.59 + bool is_name_and_type() const { return _tag == JVM_CONSTANT_NameAndType; }
1.60 + bool is_utf8() const { return _tag == JVM_CONSTANT_Utf8; }
1.61 +
1.62 + bool is_invalid() const { return _tag == JVM_CONSTANT_Invalid; }
1.63 +
1.64 + bool is_unresolved_klass() const {
1.65 + return _tag == JVM_CONSTANT_UnresolvedClass || _tag == JVM_CONSTANT_UnresolvedClassInError;
1.66 + }
1.67 +
1.68 + bool is_unresolved_klass_in_error() const {
1.69 + return _tag == JVM_CONSTANT_UnresolvedClassInError;
1.70 + }
1.71 +
1.72 + bool is_klass_index() const { return _tag == JVM_CONSTANT_ClassIndex; }
1.73 + bool is_unresolved_string() const { return _tag == JVM_CONSTANT_UnresolvedString; }
1.74 + bool is_string_index() const { return _tag == JVM_CONSTANT_StringIndex; }
1.75 +
1.76 + bool is_klass_reference() const { return is_klass_index() || is_unresolved_klass(); }
1.77 + bool is_field_or_method() const { return is_field() || is_method() || is_interface_method(); }
1.78 + bool is_symbol() const { return is_utf8(); }
1.79 +
1.80 + constantTag(jbyte tag) {
1.81 + assert((tag >= 0 && tag <= JVM_CONSTANT_NameAndType) ||
1.82 + (tag >= JVM_CONSTANT_InternalMin && tag <= JVM_CONSTANT_InternalMax), "Invalid constant tag");
1.83 + _tag = tag;
1.84 + }
1.85 +
1.86 + jbyte value() { return _tag; }
1.87 +
1.88 + void print_on(outputStream* st) const PRODUCT_RETURN;
1.89 +};
