1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/src/share/vm/ci/ciConstant.hpp Sat Dec 01 00:00:00 2007 +0000
1.3 @@ -0,0 +1,112 @@
1.4 +/*
1.5 + * Copyright 1999-2003 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 +// ciConstant
1.29 +//
1.30 +// This class represents a constant value.
1.31 +class ciConstant VALUE_OBJ_CLASS_SPEC {
1.32 +private:
1.33 + friend class ciEnv;
1.34 + friend class ciField;
1.35 +
1.36 + BasicType _type;
1.37 + union {
1.38 + jint _int;
1.39 + jlong _long;
1.40 + jint _long_half[2];
1.41 + jfloat _float;
1.42 + jdouble _double;
1.43 + ciObject* _object;
1.44 + } _value;
1.45 +
1.46 + // Implementation of the print method.
1.47 + void print_impl(outputStream* st);
1.48 +
1.49 +public:
1.50 +
1.51 + ciConstant() {
1.52 + _type = T_ILLEGAL; _value._long = -1;
1.53 + }
1.54 + ciConstant(BasicType type, jint value) {
1.55 + assert(type != T_LONG && type != T_DOUBLE && type != T_FLOAT,
1.56 + "using the wrong ciConstant constructor");
1.57 + _type = type; _value._int = value;
1.58 + }
1.59 + ciConstant(jlong value) {
1.60 + _type = T_LONG; _value._long = value;
1.61 + }
1.62 + ciConstant(jfloat value) {
1.63 + _type = T_FLOAT; _value._float = value;
1.64 + }
1.65 + ciConstant(jdouble value) {
1.66 + _type = T_DOUBLE; _value._double = value;
1.67 + }
1.68 + ciConstant(BasicType type, ciObject* p) {
1.69 + _type = type; _value._object = p;
1.70 + }
1.71 +
1.72 + BasicType basic_type() const { return _type; }
1.73 +
1.74 + jboolean as_boolean() {
1.75 + assert(basic_type() == T_BOOLEAN, "wrong type");
1.76 + return (jboolean)_value._int;
1.77 + }
1.78 + jchar as_char() {
1.79 + assert(basic_type() == T_CHAR, "wrong type");
1.80 + return (jchar)_value._int;
1.81 + }
1.82 + jbyte as_byte() {
1.83 + assert(basic_type() == T_BYTE, "wrong type");
1.84 + return (jbyte)_value._int;
1.85 + }
1.86 + jshort as_short() {
1.87 + assert(basic_type() == T_SHORT, "wrong type");
1.88 + return (jshort)_value._int;
1.89 + }
1.90 + jint as_int() {
1.91 + assert(basic_type() == T_BOOLEAN || basic_type() == T_CHAR ||
1.92 + basic_type() == T_BYTE || basic_type() == T_SHORT ||
1.93 + basic_type() == T_INT, "wrong type");
1.94 + return _value._int;
1.95 + }
1.96 + jlong as_long() {
1.97 + assert(basic_type() == T_LONG, "wrong type");
1.98 + return _value._long;
1.99 + }
1.100 + jfloat as_float() {
1.101 + assert(basic_type() == T_FLOAT, "wrong type");
1.102 + return _value._float;
1.103 + }
1.104 + jdouble as_double() {
1.105 + assert(basic_type() == T_DOUBLE, "wrong type");
1.106 + return _value._double;
1.107 + }
1.108 + ciObject* as_object() const {
1.109 + assert(basic_type() == T_OBJECT || basic_type() == T_ARRAY, "wrong type");
1.110 + return _value._object;
1.111 + }
1.112 +
1.113 + // Debugging output
1.114 + void print();
1.115 +};
