duke@435: /*
duke@435:  * Copyright 1999-2003 Sun Microsystems, Inc.  All Rights Reserved.
duke@435:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
duke@435:  *
duke@435:  * This code is free software; you can redistribute it and/or modify it
duke@435:  * under the terms of the GNU General Public License version 2 only, as
duke@435:  * published by the Free Software Foundation.
duke@435:  *
duke@435:  * This code is distributed in the hope that it will be useful, but WITHOUT
duke@435:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
duke@435:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
duke@435:  * version 2 for more details (a copy is included in the LICENSE file that
duke@435:  * accompanied this code).
duke@435:  *
duke@435:  * You should have received a copy of the GNU General Public License version
duke@435:  * 2 along with this work; if not, write to the Free Software Foundation,
duke@435:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
duke@435:  *
duke@435:  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
duke@435:  * CA 95054 USA or visit www.sun.com if you need additional information or
duke@435:  * have any questions.
duke@435:  *
duke@435:  */
duke@435: 
duke@435: // ciConstant
duke@435: //
duke@435: // This class represents a constant value.
duke@435: class ciConstant VALUE_OBJ_CLASS_SPEC {
duke@435: private:
duke@435:   friend class ciEnv;
duke@435:   friend class ciField;
duke@435: 
duke@435:   BasicType _type;
duke@435:   union {
duke@435:     jint      _int;
duke@435:     jlong     _long;
duke@435:     jint      _long_half[2];
duke@435:     jfloat    _float;
duke@435:     jdouble   _double;
duke@435:     ciObject* _object;
duke@435:   } _value;
duke@435: 
duke@435:   // Implementation of the print method.
duke@435:   void print_impl(outputStream* st);
duke@435: 
duke@435: public:
duke@435: 
duke@435:   ciConstant() {
duke@435:     _type = T_ILLEGAL; _value._long = -1;
duke@435:   }
duke@435:   ciConstant(BasicType type, jint value) {
duke@435:     assert(type != T_LONG && type != T_DOUBLE && type != T_FLOAT,
duke@435:            "using the wrong ciConstant constructor");
duke@435:     _type = type; _value._int = value;
duke@435:   }
duke@435:   ciConstant(jlong value) {
duke@435:     _type = T_LONG; _value._long = value;
duke@435:   }
duke@435:   ciConstant(jfloat value) {
duke@435:     _type = T_FLOAT; _value._float = value;
duke@435:   }
duke@435:   ciConstant(jdouble value) {
duke@435:     _type = T_DOUBLE; _value._double = value;
duke@435:   }
duke@435:   ciConstant(BasicType type, ciObject* p) {
duke@435:     _type = type; _value._object = p;
duke@435:   }
duke@435: 
duke@435:   BasicType basic_type() const { return _type; }
duke@435: 
duke@435:   jboolean  as_boolean() {
duke@435:     assert(basic_type() == T_BOOLEAN, "wrong type");
duke@435:     return (jboolean)_value._int;
duke@435:   }
duke@435:   jchar     as_char() {
duke@435:     assert(basic_type() == T_CHAR, "wrong type");
duke@435:     return (jchar)_value._int;
duke@435:   }
duke@435:   jbyte     as_byte() {
duke@435:     assert(basic_type() == T_BYTE, "wrong type");
duke@435:     return (jbyte)_value._int;
duke@435:   }
duke@435:   jshort    as_short() {
duke@435:     assert(basic_type() == T_SHORT, "wrong type");
duke@435:     return (jshort)_value._int;
duke@435:   }
duke@435:   jint      as_int() {
duke@435:     assert(basic_type() == T_BOOLEAN || basic_type() == T_CHAR  ||
duke@435:            basic_type() == T_BYTE    || basic_type() == T_SHORT ||
duke@435:            basic_type() == T_INT, "wrong type");
duke@435:     return _value._int;
duke@435:   }
duke@435:   jlong     as_long() {
duke@435:     assert(basic_type() == T_LONG, "wrong type");
duke@435:     return _value._long;
duke@435:   }
duke@435:   jfloat    as_float() {
duke@435:     assert(basic_type() == T_FLOAT, "wrong type");
duke@435:     return _value._float;
duke@435:   }
duke@435:   jdouble   as_double() {
duke@435:     assert(basic_type() == T_DOUBLE, "wrong type");
duke@435:     return _value._double;
duke@435:   }
duke@435:   ciObject* as_object() const {
duke@435:     assert(basic_type() == T_OBJECT || basic_type() == T_ARRAY, "wrong type");
duke@435:     return _value._object;
duke@435:   }
duke@435: 
duke@435:   // Debugging output
duke@435:   void print();
duke@435: };