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src/share/vm/ci/ciConstant.hpp@4ce7240d622c (annotated)

src/share/vm/ci/ciConstant.hpp

Wed, 06 Jan 2010 14:22:39 -0800

author

never

date

Wed, 06 Jan 2010 14:22:39 -0800

changeset 1577

4ce7240d622c

parent 435

a61af66fc99e

child 1907

c18cbe5936b8

permissions

-rw-r--r--

6914300: ciEnv should export all well known classes
Reviewed-by: kvn, twisti

duke@435	1	/*
duke@435	2	* Copyright 1999-2003 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	// ciConstant
duke@435	26	//
duke@435	27	// This class represents a constant value.
duke@435	28	class ciConstant VALUE_OBJ_CLASS_SPEC {
duke@435	29	private:
duke@435	30	friend class ciEnv;
duke@435	31	friend class ciField;
duke@435	32
duke@435	33	BasicType _type;
duke@435	34	union {
duke@435	35	jint _int;
duke@435	36	jlong _long;
duke@435	37	jint _long_half[2];
duke@435	38	jfloat _float;
duke@435	39	jdouble _double;
duke@435	40	ciObject* _object;
duke@435	41	} _value;
duke@435	42
duke@435	43	// Implementation of the print method.
duke@435	44	void print_impl(outputStream* st);
duke@435	45
duke@435	46	public:
duke@435	47
duke@435	48	ciConstant() {
duke@435	49	_type = T_ILLEGAL; _value._long = -1;
duke@435	50	}
duke@435	51	ciConstant(BasicType type, jint value) {
duke@435	52	assert(type != T_LONG && type != T_DOUBLE && type != T_FLOAT,
duke@435	53	"using the wrong ciConstant constructor");
duke@435	54	_type = type; _value._int = value;
duke@435	55	}
duke@435	56	ciConstant(jlong value) {
duke@435	57	_type = T_LONG; _value._long = value;
duke@435	58	}
duke@435	59	ciConstant(jfloat value) {
duke@435	60	_type = T_FLOAT; _value._float = value;
duke@435	61	}
duke@435	62	ciConstant(jdouble value) {
duke@435	63	_type = T_DOUBLE; _value._double = value;
duke@435	64	}
duke@435	65	ciConstant(BasicType type, ciObject* p) {
duke@435	66	_type = type; _value._object = p;
duke@435	67	}
duke@435	68
duke@435	69	BasicType basic_type() const { return _type; }
duke@435	70
duke@435	71	jboolean as_boolean() {
duke@435	72	assert(basic_type() == T_BOOLEAN, "wrong type");
duke@435	73	return (jboolean)_value._int;
duke@435	74	}
duke@435	75	jchar as_char() {
duke@435	76	assert(basic_type() == T_CHAR, "wrong type");
duke@435	77	return (jchar)_value._int;
duke@435	78	}
duke@435	79	jbyte as_byte() {
duke@435	80	assert(basic_type() == T_BYTE, "wrong type");
duke@435	81	return (jbyte)_value._int;
duke@435	82	}
duke@435	83	jshort as_short() {
duke@435	84	assert(basic_type() == T_SHORT, "wrong type");
duke@435	85	return (jshort)_value._int;
duke@435	86	}
duke@435	87	jint as_int() {
duke@435	88	assert(basic_type() == T_BOOLEAN || basic_type() == T_CHAR ||
duke@435	89	basic_type() == T_BYTE || basic_type() == T_SHORT ||
duke@435	90	basic_type() == T_INT, "wrong type");
duke@435	91	return _value._int;
duke@435	92	}
duke@435	93	jlong as_long() {
duke@435	94	assert(basic_type() == T_LONG, "wrong type");
duke@435	95	return _value._long;
duke@435	96	}
duke@435	97	jfloat as_float() {
duke@435	98	assert(basic_type() == T_FLOAT, "wrong type");
duke@435	99	return _value._float;
duke@435	100	}
duke@435	101	jdouble as_double() {
duke@435	102	assert(basic_type() == T_DOUBLE, "wrong type");
duke@435	103	return _value._double;
duke@435	104	}
duke@435	105	ciObject* as_object() const {
duke@435	106	assert(basic_type() == T_OBJECT || basic_type() == T_ARRAY, "wrong type");
duke@435	107	return _value._object;
duke@435	108	}
duke@435	109
duke@435	110	// Debugging output
duke@435	111	void print();
duke@435	112	};