1/***************************************************************************** 2 3 Licensed to Accellera Systems Initiative Inc. (Accellera) under one or 4 more contributor license agreements. See the NOTICE file distributed 5 with this work for additional information regarding copyright ownership. 6 Accellera licenses this file to you under the Apache License, Version 2.0 7 (the "License"); you may not use this file except in compliance with the 8 License. You may obtain a copy of the License at 9 10 http://www.apache.org/licenses/LICENSE-2.0 11 12 Unless required by applicable law or agreed to in writing, software 13 distributed under the License is distributed on an "AS IS" BASIS, 14 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or 15 implied. See the License for the specific language governing 16 permissions and limitations under the License. 17 18 *****************************************************************************/ 19 20/***************************************************************************** 21 22 sc_value_base.h -- Base class for SystemC bit values. 23 24 Original Author: Andy Goodrich, Forte Design Systems 25 26 *****************************************************************************/ 27 28/***************************************************************************** 29 30 MODIFICATION LOG - modifiers, enter your name, affiliation, date and 31 changes you are making here. 32 33 Name, Affiliation, Date: 34 Description of Modification: 35 36 *****************************************************************************/ 37 38// $Log: sc_value_base.h,v $ 39// Revision 1.4 2011/08/29 18:04:32 acg 40// Philipp A. Hartmann: miscellaneous clean ups. 41// 42// Revision 1.3 2011/08/24 22:05:48 acg 43// Torsten Maehne: initialization changes to remove warnings. 44// 45// Revision 1.2 2011/06/28 21:23:04 acg 46// Andy Goodrich: merging of SCV tree. 47// 48// Revision 1.1.1.1 2006/12/15 20:20:05 acg 49// SystemC 2.3 50// 51// Revision 1.3 2006/01/13 18:54:01 acg 52// Andy Goodrich: added $Log command so that CVS comments are reproduced in 53// the source. 54// 55 56#ifndef SC_VALUE_BASE_H 57#define SC_VALUE_BASE_H 58 59 60#include "sysc/datatypes/int/sc_nbdefs.h" 61 62namespace sc_dt 63{ 64 65class sc_signed; 66class sc_unsigned; 67 68// ---------------------------------------------------------------------------- 69// CLASS : sc_value_base 70// 71// Abstract base class of all SystemC native variables. It provides 72// support for concatenation operations via a set of virtual methods. 73// A general description of the methods appear with their default 74// definitions in sc_object.cpp. 75// ---------------------------------------------------------------------------- 76 77class sc_value_base 78{ 79 friend class sc_concatref; 80 private: 81 virtual void concat_clear_data( bool to_ones=false ); 82 virtual bool concat_get_ctrl( sc_digit* dst_p, int low_i ) const; 83 virtual bool concat_get_data( sc_digit* dst_p, int low_i ) const; 84 virtual uint64 concat_get_uint64() const; 85 virtual int concat_length(bool* xz_present_p=0) const; 86 virtual void concat_set( int64 src, int low_i ); 87 virtual void concat_set( const sc_signed& src, int low_i ); 88 virtual void concat_set( const sc_unsigned& src, int low_i ); 89 virtual void concat_set( uint64 src, int low_i ); 90 public: 91 virtual ~sc_value_base() {} 92}; 93 94 95// ---------------------------------------------------------------------------- 96// CLASS : sc_generic_base 97// 98// Proxy class for user-defined value classes and other classes that 99// are defined outside of SystemC. 100// The class is utilized as a base class for the arbitrary class: 101// 102// class my_class : public sc_generic_base<my_class> 103// 104// The purpose of the class is to allow to_XXXX methods defined within that 105// class so that assignments and casts from the arbitrary class to native 106// SystemC types are possible. To interact correctly with the SystemC library 107// the class derived from sc_generic_base must implement the following 108// methods: 109// (1) uint64 to_uint64() const 110// (2) int64 to_int64() const 111// (3) void to_sc_unsigned( sc_unsigned& ) const 112// (4) void to_sc_signed( sc_signed& ) const 113// ---------------------------------------------------------------------------- 114template< class T > 115class sc_generic_base { 116 public: 117 inline const T* operator-> () const 118 { 119 return (const T*)this; 120 } 121 inline T* operator-> () 122 { 123 return (T*)this; 124 } 125}; 126 127} // namespace sc_dt 128 129#endif 130