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src/share/vm/utilities/constantTag.hpp@1d1603768966 (annotated)

src/share/vm/utilities/constantTag.hpp

Tue, 05 Apr 2011 14:12:31 -0700

author

trims

date

Tue, 05 Apr 2011 14:12:31 -0700

changeset 2708

1d1603768966

parent 2353

dad31fc330cd

child 2742

ed69575596ac

permissions

-rw-r--r--

7010070: Update all 2010 Oracle-changed OpenJDK files to have the proper copyright dates - second pass
Summary: Update the copyright to be 2010 on all changed files in OpenJDK
Reviewed-by: ohair

duke@435	1	/*
jrose@2268	2	* Copyright (c) 1997, 2010, Oracle and/or its affiliates. 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	*
trims@1907	19	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
trims@1907	20	* or visit www.oracle.com if you need additional information or have any
trims@1907	21	* questions.
duke@435	22	*
duke@435	23	*/
duke@435	24
stefank@2314	25	#ifndef SHARE_VM_UTILITIES_CONSTANTTAG_HPP
stefank@2314	26	#define SHARE_VM_UTILITIES_CONSTANTTAG_HPP
stefank@2314	27
stefank@2314	28	#include "prims/jvm.h"
stefank@2314	29	#include "utilities/top.hpp"
stefank@2314	30
duke@435	31	// constant tags in Java .class files
duke@435	32
duke@435	33
duke@435	34	enum {
duke@435	35	// See jvm.h for shared JVM_CONSTANT_XXX tags
duke@435	36	// NOTE: replicated in SA in vm/agent/sun/jvm/hotspot/utilities/ConstantTag.java
duke@435	37	// Hotspot specific tags
duke@435	38	JVM_CONSTANT_Invalid = 0, // For bad value initialization
duke@435	39	JVM_CONSTANT_InternalMin = 100, // First implementation tag (aside from bad value of course)
duke@435	40	JVM_CONSTANT_UnresolvedClass = 100, // Temporary tag until actual use
duke@435	41	JVM_CONSTANT_ClassIndex = 101, // Temporary tag while constructing constant pool
duke@435	42	JVM_CONSTANT_UnresolvedString = 102, // Temporary tag until actual use
duke@435	43	JVM_CONSTANT_StringIndex = 103, // Temporary tag while constructing constant pool
duke@435	44	JVM_CONSTANT_UnresolvedClassInError = 104, // Error tag due to resolution error
twisti@1573	45	JVM_CONSTANT_Object = 105, // Required for BoundMethodHandle arguments.
twisti@1573	46	JVM_CONSTANT_InternalMax = 105 // Last implementation tag
duke@435	47	};
duke@435	48
duke@435	49
duke@435	50	class constantTag VALUE_OBJ_CLASS_SPEC {
duke@435	51	private:
duke@435	52	jbyte _tag;
duke@435	53	public:
duke@435	54	bool is_klass() const { return _tag == JVM_CONSTANT_Class; }
duke@435	55	bool is_field () const { return _tag == JVM_CONSTANT_Fieldref; }
duke@435	56	bool is_method() const { return _tag == JVM_CONSTANT_Methodref; }
duke@435	57	bool is_interface_method() const { return _tag == JVM_CONSTANT_InterfaceMethodref; }
duke@435	58	bool is_string() const { return _tag == JVM_CONSTANT_String; }
duke@435	59	bool is_int() const { return _tag == JVM_CONSTANT_Integer; }
duke@435	60	bool is_float() const { return _tag == JVM_CONSTANT_Float; }
duke@435	61	bool is_long() const { return _tag == JVM_CONSTANT_Long; }
duke@435	62	bool is_double() const { return _tag == JVM_CONSTANT_Double; }
duke@435	63	bool is_name_and_type() const { return _tag == JVM_CONSTANT_NameAndType; }
duke@435	64	bool is_utf8() const { return _tag == JVM_CONSTANT_Utf8; }
duke@435	65
duke@435	66	bool is_invalid() const { return _tag == JVM_CONSTANT_Invalid; }
duke@435	67
duke@435	68	bool is_unresolved_klass() const {
duke@435	69	return _tag == JVM_CONSTANT_UnresolvedClass || _tag == JVM_CONSTANT_UnresolvedClassInError;
duke@435	70	}
duke@435	71
duke@435	72	bool is_unresolved_klass_in_error() const {
duke@435	73	return _tag == JVM_CONSTANT_UnresolvedClassInError;
duke@435	74	}
duke@435	75
duke@435	76	bool is_klass_index() const { return _tag == JVM_CONSTANT_ClassIndex; }
duke@435	77	bool is_unresolved_string() const { return _tag == JVM_CONSTANT_UnresolvedString; }
duke@435	78	bool is_string_index() const { return _tag == JVM_CONSTANT_StringIndex; }
duke@435	79
twisti@1573	80	bool is_object() const { return _tag == JVM_CONSTANT_Object; }
twisti@1573	81
duke@435	82	bool is_klass_reference() const { return is_klass_index() || is_unresolved_klass(); }
jrose@866	83	bool is_klass_or_reference() const{ return is_klass() || is_klass_reference(); }
duke@435	84	bool is_field_or_method() const { return is_field() || is_method() || is_interface_method(); }
duke@435	85	bool is_symbol() const { return is_utf8(); }
duke@435	86
jrose@1957	87	bool is_method_type() const { return _tag == JVM_CONSTANT_MethodType; }
jrose@1957	88	bool is_method_handle() const { return _tag == JVM_CONSTANT_MethodHandle; }
jrose@2353	89	bool is_invoke_dynamic() const { return (_tag == JVM_CONSTANT_InvokeDynamic ||
jrose@2353	90	_tag == JVM_CONSTANT_InvokeDynamicTrans); }
jrose@1957	91
jrose@2268	92	bool is_loadable_constant() const {
jrose@2268	93	return ((_tag >= JVM_CONSTANT_Integer && _tag <= JVM_CONSTANT_String) ||
jrose@2268	94	is_method_type() || is_method_handle() ||
jrose@2268	95	is_unresolved_klass() || is_unresolved_string() ||
jrose@2268	96	is_object());
jrose@2268	97	}
jrose@2268	98
jrose@1957	99	constantTag() {
jrose@1957	100	_tag = JVM_CONSTANT_Invalid;
jrose@1957	101	}
duke@435	102	constantTag(jbyte tag) {
duke@435	103	assert((tag >= 0 && tag <= JVM_CONSTANT_NameAndType) ||
jrose@2015	104	(tag >= JVM_CONSTANT_MethodHandle && tag <= JVM_CONSTANT_InvokeDynamic) ||
duke@435	105	(tag >= JVM_CONSTANT_InternalMin && tag <= JVM_CONSTANT_InternalMax), "Invalid constant tag");
duke@435	106	_tag = tag;
duke@435	107	}
duke@435	108
duke@435	109	jbyte value() { return _tag; }
duke@435	110
jrose@1957	111	BasicType basic_type() const; // if used with ldc, what kind of value gets pushed?
jrose@1957	112
jrose@1957	113	const char* internal_name() const; // for error reporting
jrose@1957	114
duke@435	115	void print_on(outputStream* st) const PRODUCT_RETURN;
duke@435	116	};
stefank@2314	117
stefank@2314	118	#endif // SHARE_VM_UTILITIES_CONSTANTTAG_HPP