sc_port.hh revision 12842:79e4e6e731fe 
1/*
2 * Copyright 2018 Google, Inc.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions are
6 * met: redistributions of source code must retain the above copyright
7 * notice, this list of conditions and the following disclaimer;
8 * redistributions in binary form must reproduce the above copyright
9 * notice, this list of conditions and the following disclaimer in the
10 * documentation and/or other materials provided with the distribution;
11 * neither the name of the copyright holders nor the names of its
12 * contributors may be used to endorse or promote products derived from
13 * this software without specific prior written permission.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
16 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
17 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
18 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
19 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
20 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
21 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
25 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 *
27 * Authors: Gabe Black
28 */
29
30#ifndef __SYSTEMC_EXT_CORE_SC_PORT_HH__
31#define __SYSTEMC_EXT_CORE_SC_PORT_HH__
32
33#include "sc_module.hh" // for sc_gen_unique_name
34#include "sc_object.hh"
35
36namespace sc_core
37{
38
39class sc_interface;
40
41enum sc_port_policy
42{
43    SC_ONE_OR_MORE_BOUND, // Default
44    SC_ZERO_OR_MORE_BOUND,
45    SC_ALL_BOUND
46};
47
48class sc_port_base : public sc_object
49{
50  public:
51    sc_port_base(const char *name, int n, sc_port_policy p) : sc_object(name)
52    {}
53
54    void warn_unimpl(const char *func) const;
55};
56
57template <class IF>
58class sc_port_b : public sc_port_base
59{
60  public:
61    void
62    operator () (IF &)
63    {
64        warn_unimpl(__PRETTY_FUNCTION__);
65    }
66
67    void
68    operator () (sc_port_b<IF> &)
69    {
70        warn_unimpl(__PRETTY_FUNCTION__);
71    }
72
73    virtual void
74    bind(IF &)
75    {
76        warn_unimpl(__PRETTY_FUNCTION__);
77    }
78
79    virtual void
80    bind(sc_port_b<IF> &)
81    {
82        warn_unimpl(__PRETTY_FUNCTION__);
83    }
84
85    int
86    size() const
87    {
88        warn_unimpl(__PRETTY_FUNCTION__);
89        return 0;
90    }
91
92    IF *
93    operator -> ()
94    {
95        warn_unimpl(__PRETTY_FUNCTION__);
96        return (IF *)nullptr;
97    }
98
99    const IF *
100    operator -> () const
101    {
102        warn_unimpl(__PRETTY_FUNCTION__);
103        return (IF *)nullptr;
104    }
105
106    IF *
107    operator [] (int)
108    {
109        warn_unimpl(__PRETTY_FUNCTION__);
110        return (IF *)nullptr;
111    }
112
113    const IF *
114    operator [] (int) const
115    {
116        warn_unimpl(__PRETTY_FUNCTION__);
117        return (IF *)nullptr;
118    }
119
120    virtual sc_interface *
121    get_interface()
122    {
123        warn_unimpl(__PRETTY_FUNCTION__);
124        return (sc_interface *)nullptr;
125    }
126
127    virtual const sc_interface *
128    get_interface() const
129    {
130        warn_unimpl(__PRETTY_FUNCTION__);
131        return (sc_interface *)nullptr;
132    }
133
134  protected:
135    virtual void before_end_of_elaboration() {}
136    virtual void end_of_elaboration() {}
137    virtual void start_of_elaboration() {}
138    virtual void end_of_simulation() {}
139
140    explicit sc_port_b(int n, sc_port_policy p) :
141            sc_port_base(sc_gen_unique_name("sc_port"), n, p)
142    {}
143    sc_port_b(const char *name, int n, sc_port_policy p) :
144            sc_port_base(name, n, p)
145    {}
146    virtual ~sc_port_b() {}
147
148  private:
149    // Disabled
150    sc_port_b() {}
151    sc_port_b(const sc_port_b<IF> &) {}
152    sc_port_b<IF> &operator = (const sc_port_b<IF> &) { return *this; }
153};
154
155template <class IF, int N=1, sc_port_policy P=SC_ONE_OR_MORE_BOUND>
156class sc_port : public sc_port_b<IF>
157{
158  public:
159    sc_port() : sc_port_b<IF>(sc_gen_unique_name("sc_port"), N, P) {}
160    explicit sc_port(const char *name) : sc_port_b<IF>(name, N, P) {}
161    virtual ~sc_port() {}
162
163    virtual const char *kind() const { return "sc_port"; }
164
165  private:
166    // Disabled
167    sc_port(const sc_port<IF, N, P> &) {}
168    sc_port<IF, N, P> &operator = (const sc_port<IF, N, P> &) { return *this; }
169};
170
171} // namespace sc_core
172
173#endif  //__SYSTEMC_EXT_CORE_SC_PORT_HH__
174