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src/share/vm/utilities/constantTag.hpp@a61af66fc99e (annotated)

src/share/vm/utilities/constantTag.hpp

Sat, 01 Dec 2007 00:00:00 +0000

author

duke

date

Sat, 01 Dec 2007 00:00:00 +0000

changeset 435

a61af66fc99e

child 866

a45484ea312d

permissions

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duke@435	1	/*
duke@435	2	* Copyright 1997-2005 Sun Microsystems, Inc. All Rights Reserved.
duke@435	3	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
duke@435	4	*
duke@435	5	* This code is free software; you can redistribute it and/or modify it
duke@435	6	* under the terms of the GNU General Public License version 2 only, as
duke@435	7	* published by the Free Software Foundation.
duke@435	8	*
duke@435	9	* This code is distributed in the hope that it will be useful, but WITHOUT
duke@435	10	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
duke@435	11	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
duke@435	12	* version 2 for more details (a copy is included in the LICENSE file that
duke@435	13	* accompanied this code).
duke@435	14	*
duke@435	15	* You should have received a copy of the GNU General Public License version
duke@435	16	* 2 along with this work; if not, write to the Free Software Foundation,
duke@435	17	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
duke@435	18	*
duke@435	19	* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
duke@435	20	* CA 95054 USA or visit www.sun.com if you need additional information or
duke@435	21	* have any questions.
duke@435	22	*
duke@435	23	*/
duke@435	24
duke@435	25	// constant tags in Java .class files
duke@435	26
duke@435	27
duke@435	28	enum {
duke@435	29	// See jvm.h for shared JVM_CONSTANT_XXX tags
duke@435	30	// NOTE: replicated in SA in vm/agent/sun/jvm/hotspot/utilities/ConstantTag.java
duke@435	31	// Hotspot specific tags
duke@435	32	JVM_CONSTANT_Invalid = 0, // For bad value initialization
duke@435	33	JVM_CONSTANT_InternalMin = 100, // First implementation tag (aside from bad value of course)
duke@435	34	JVM_CONSTANT_UnresolvedClass = 100, // Temporary tag until actual use
duke@435	35	JVM_CONSTANT_ClassIndex = 101, // Temporary tag while constructing constant pool
duke@435	36	JVM_CONSTANT_UnresolvedString = 102, // Temporary tag until actual use
duke@435	37	JVM_CONSTANT_StringIndex = 103, // Temporary tag while constructing constant pool
duke@435	38	JVM_CONSTANT_UnresolvedClassInError = 104, // Error tag due to resolution error
duke@435	39	JVM_CONSTANT_InternalMax = 104 // Last implementation tag
duke@435	40	};
duke@435	41
duke@435	42
duke@435	43	class constantTag VALUE_OBJ_CLASS_SPEC {
duke@435	44	private:
duke@435	45	jbyte _tag;
duke@435	46	public:
duke@435	47	bool is_klass() const { return _tag == JVM_CONSTANT_Class; }
duke@435	48	bool is_field () const { return _tag == JVM_CONSTANT_Fieldref; }
duke@435	49	bool is_method() const { return _tag == JVM_CONSTANT_Methodref; }
duke@435	50	bool is_interface_method() const { return _tag == JVM_CONSTANT_InterfaceMethodref; }
duke@435	51	bool is_string() const { return _tag == JVM_CONSTANT_String; }
duke@435	52	bool is_int() const { return _tag == JVM_CONSTANT_Integer; }
duke@435	53	bool is_float() const { return _tag == JVM_CONSTANT_Float; }
duke@435	54	bool is_long() const { return _tag == JVM_CONSTANT_Long; }
duke@435	55	bool is_double() const { return _tag == JVM_CONSTANT_Double; }
duke@435	56	bool is_name_and_type() const { return _tag == JVM_CONSTANT_NameAndType; }
duke@435	57	bool is_utf8() const { return _tag == JVM_CONSTANT_Utf8; }
duke@435	58
duke@435	59	bool is_invalid() const { return _tag == JVM_CONSTANT_Invalid; }
duke@435	60
duke@435	61	bool is_unresolved_klass() const {
duke@435	62	return _tag == JVM_CONSTANT_UnresolvedClass || _tag == JVM_CONSTANT_UnresolvedClassInError;
duke@435	63	}
duke@435	64
duke@435	65	bool is_unresolved_klass_in_error() const {
duke@435	66	return _tag == JVM_CONSTANT_UnresolvedClassInError;
duke@435	67	}
duke@435	68
duke@435	69	bool is_klass_index() const { return _tag == JVM_CONSTANT_ClassIndex; }
duke@435	70	bool is_unresolved_string() const { return _tag == JVM_CONSTANT_UnresolvedString; }
duke@435	71	bool is_string_index() const { return _tag == JVM_CONSTANT_StringIndex; }
duke@435	72
duke@435	73	bool is_klass_reference() const { return is_klass_index() || is_unresolved_klass(); }
duke@435	74	bool is_field_or_method() const { return is_field() || is_method() || is_interface_method(); }
duke@435	75	bool is_symbol() const { return is_utf8(); }
duke@435	76
duke@435	77	constantTag(jbyte tag) {
duke@435	78	assert((tag >= 0 && tag <= JVM_CONSTANT_NameAndType) ||
duke@435	79	(tag >= JVM_CONSTANT_InternalMin && tag <= JVM_CONSTANT_InternalMax), "Invalid constant tag");
duke@435	80	_tag = tag;
duke@435	81	}
duke@435	82
duke@435	83	jbyte value() { return _tag; }
duke@435	84
duke@435	85	void print_on(outputStream* st) const PRODUCT_RETURN;
duke@435	86	};