Mercurial > hg > truffle
diff src/share/vm/utilities/constantTag.hpp @ 0:a61af66fc99e jdk7-b24
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author | duke |
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date | Sat, 01 Dec 2007 00:00:00 +0000 |
parents | |
children | a45484ea312d |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/share/vm/utilities/constantTag.hpp Sat Dec 01 00:00:00 2007 +0000 @@ -0,0 +1,86 @@ +/* + * Copyright 1997-2005 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. + * + */ + +// constant tags in Java .class files + + +enum { + // See jvm.h for shared JVM_CONSTANT_XXX tags + // NOTE: replicated in SA in vm/agent/sun/jvm/hotspot/utilities/ConstantTag.java + // Hotspot specific tags + JVM_CONSTANT_Invalid = 0, // For bad value initialization + JVM_CONSTANT_InternalMin = 100, // First implementation tag (aside from bad value of course) + JVM_CONSTANT_UnresolvedClass = 100, // Temporary tag until actual use + JVM_CONSTANT_ClassIndex = 101, // Temporary tag while constructing constant pool + JVM_CONSTANT_UnresolvedString = 102, // Temporary tag until actual use + JVM_CONSTANT_StringIndex = 103, // Temporary tag while constructing constant pool + JVM_CONSTANT_UnresolvedClassInError = 104, // Error tag due to resolution error + JVM_CONSTANT_InternalMax = 104 // Last implementation tag +}; + + +class constantTag VALUE_OBJ_CLASS_SPEC { + private: + jbyte _tag; + public: + bool is_klass() const { return _tag == JVM_CONSTANT_Class; } + bool is_field () const { return _tag == JVM_CONSTANT_Fieldref; } + bool is_method() const { return _tag == JVM_CONSTANT_Methodref; } + bool is_interface_method() const { return _tag == JVM_CONSTANT_InterfaceMethodref; } + bool is_string() const { return _tag == JVM_CONSTANT_String; } + bool is_int() const { return _tag == JVM_CONSTANT_Integer; } + bool is_float() const { return _tag == JVM_CONSTANT_Float; } + bool is_long() const { return _tag == JVM_CONSTANT_Long; } + bool is_double() const { return _tag == JVM_CONSTANT_Double; } + bool is_name_and_type() const { return _tag == JVM_CONSTANT_NameAndType; } + bool is_utf8() const { return _tag == JVM_CONSTANT_Utf8; } + + bool is_invalid() const { return _tag == JVM_CONSTANT_Invalid; } + + bool is_unresolved_klass() const { + return _tag == JVM_CONSTANT_UnresolvedClass || _tag == JVM_CONSTANT_UnresolvedClassInError; + } + + bool is_unresolved_klass_in_error() const { + return _tag == JVM_CONSTANT_UnresolvedClassInError; + } + + bool is_klass_index() const { return _tag == JVM_CONSTANT_ClassIndex; } + bool is_unresolved_string() const { return _tag == JVM_CONSTANT_UnresolvedString; } + bool is_string_index() const { return _tag == JVM_CONSTANT_StringIndex; } + + bool is_klass_reference() const { return is_klass_index() || is_unresolved_klass(); } + bool is_field_or_method() const { return is_field() || is_method() || is_interface_method(); } + bool is_symbol() const { return is_utf8(); } + + constantTag(jbyte tag) { + assert((tag >= 0 && tag <= JVM_CONSTANT_NameAndType) || + (tag >= JVM_CONSTANT_InternalMin && tag <= JVM_CONSTANT_InternalMax), "Invalid constant tag"); + _tag = tag; + } + + jbyte value() { return _tag; } + + void print_on(outputStream* st) const PRODUCT_RETURN; +};