ermyth/include/gencallbacks.pl

#!/usr/bin/perl
# $Id: gencallbacks.pl,v 1.1 2007-07-19 08:24:50 pippijn Exp $

use strict;
use warnings;
use utf8;

my $namespace = "callback";
my $events = $ARGV[0] || 0;

$events > 1
   or die "Usage: $0 NUMBER\nwhere NUMBER > 1.";

my $gen = "";

for my $num (2 .. $events) {
   my @argt;
   my @argn;
   my $arg_type_list_named;
   
   for (1 .. $num) {
      my $a = "arg${_}_type";
      my $aname = "a$_";
      push @argt, $a;
      push @argn, $aname;
      $arg_type_list_named .= "$a $aname, ";
   }
   
   $arg_type_list_named =~ s/, *$//;
   
   my $arg_params_names = join ", ", @argn;
   my $arg_tmpl_decl = "class " . join ", class ", @argt;
   my $arg_type_list = join ", ", @argt;
   
   $gen .= <<EOF;
    ////////////////////// events for $num arguments //////////////////////
    // auto-generated by $0
    //
    // tmpl decl  = $arg_tmpl_decl
    // args       = $arg_type_list
    // named args = $arg_type_list_named

EOF

   ########################################################################
   # connection_base
   $gen .= <<EOF;
    template <${arg_tmpl_decl}>
    class connection_base${num}
    {
    public:
      typedef connection_base${num}<${arg_type_list}> this_type;
      
      virtual ~connection_base${num} (){}
      
      virtual listening_base* getdest () const = 0;
      virtual void invoke (${arg_type_list}) const = 0;
      virtual this_type *clone () const { return 0; }
      virtual this_type *duplicate (listening_base* pnewdest) const { return 0; }
#if 0
      virtual this_type *clone () const = 0; // { return 0; }
      virtual this_type *duplicate (listening_base* pnewdest) const = 0; // { return 0; }
#endif
    };

EOF


   ########################################################################
   # connection
   $gen .= <<EOF;
    template<class dest_type, ${arg_tmpl_decl}>
    class connection${num} : public connection_base${num}<${arg_type_list}>
    {
    public:
      typedef connection_base${num}<${arg_type_list} > base_type;
      typedef connection${num}< dest_type, ${arg_type_list} > this_type;
      typedef void (dest_type::*listener_func) (${arg_type_list});
      
      connection${num} () : m_pobject (0), m_pmemfun (0) { }
      
      virtual ~connection${num} () { }
      
      connection${num} (dest_type *pobject, listener_func pfunc) : m_pobject (pobject), m_pmemfun (pfunc) { }
      
      virtual base_type *clone () const
      {
        return new this_type (*this);
      }
      
      virtual base_type *duplicate (listening_base *pnewdest) const
      {
        return new this_type (dynamic_cast<dest_type *> (pnewdest), m_pmemfun);
      }
      
      virtual listening_base* getdest () const
      {
        return m_pobject;
      }
      
      virtual void invoke (${arg_type_list_named}) const
      {
        (m_pobject->*m_pmemfun) (${arg_params_names});
      }
      
    private:
      dest_type* m_pobject;
      listener_func m_pmemfun;
    };

EOF


   ########################################################################
   # event
   $gen .= <<EOF;
    template<${arg_tmpl_decl} >
    class event${num} : public event_base
    {
    public:
      typedef has_listeners listening_base;
      typedef std::list<connection_base${num}<${arg_type_list}> *>
       connection_list;
      
      event${num} () { }
      
      event${num} (const event${num}<${arg_type_list}> &s) : event_base (s)
      {
        if (&s == this)
          return;
  
        this->copy_connections (s.connections (), this->connections ());
      }
      
      
      template<class desttype>
      void attach (desttype* plistener, void (desttype::*pmemfun) (${arg_type_list}))
      {
        connection_base${num}<${arg_type_list}> *conn = new connection${num}<desttype, ${arg_type_list}> (plistener, pmemfun);
        this->connections ().push_back (conn);
        plistener->add_invoker (this);
      }
      
      void invoke (${arg_type_list_named}) const
      {
        typename connection_list::const_iterator it;
        typename connection_list::const_iterator it_end = this->connections ().end ();
        
        for (it = this->connections ().begin (); it != it_end; ++it)
          (*it)->invoke (${arg_params_names});
      }
  
      void operator () (${arg_type_list_named}) const
      {
        this->invoke (${arg_params_names});
      }
         
      event${num} &operator= (const event${num} &s)
      {
        this->copy_connections (s.connections (), this->connections ());
        return *this;
      }
      
      ~event${num} ()
      {
        disconnect_all ();
      }
      
      void disconnect_all ()
      {
        this->free_connections (connections ());
      }
      
      bool listener_duplicate (const listening_base *oldtarget, listening_base *newtarget)
      {
        return this->duplicate_connection (oldtarget, newtarget, connections ());
      }
      
    protected:
      bool listener_detach (listening_base *plistener)
      {
        return this->detach (plistener, this->connections ());
      }
      
      connection_list & connections ()
      {
        return this->m_connected_listeners;
      }
  
      const connection_list &connections () const
      {
        return this->m_connected_listeners;
      }
  
    private:
      connection_list m_connected_listeners;
    };
EOF

}

print $gen;
Revision:	1.2
Committed:	Sat Jul 21 15:05:40 2007 UTC (19 years, 1 month ago) by pippijn
Content type:	text/plain
Branch:	MAIN
CVS Tags:	HEAD
Changes since 1.1:	+1 -1 lines
State:	*FILE REMOVED*
Log Message:	added missing files
#	Content
1	#!/usr/bin/perl
2	# $Id: gencallbacks.pl,v 1.1 2007-07-19 08:24:50 pippijn Exp $
3
4	use strict;
5	use warnings;
6	use utf8;
7
8	my $namespace = "callback";
9	my $events = $ARGV[0] \|\| 0;
10
11	$events > 1
12	or die "Usage: $0 NUMBER\nwhere NUMBER > 1.";
13
14	my $gen = "";
15
16	for my $num (2 .. $events) {
17	my @argt;
18	my @argn;
19	my $arg_type_list_named;
20
21	for (1 .. $num) {
22	my $a = "arg${_}_type";
23	my $aname = "a$_";
24	push @argt, $a;
25	push @argn, $aname;
26	$arg_type_list_named .= "$a $aname, ";
27	}
28
29	$arg_type_list_named =~ s/, *$//;
30
31	my $arg_params_names = join ", ", @argn;
32	my $arg_tmpl_decl = "class " . join ", class ", @argt;
33	my $arg_type_list = join ", ", @argt;
34
35	$gen .= <<EOF;
36	////////////////////// events for $num arguments //////////////////////
37	// auto-generated by $0
38	//
39	// tmpl decl = $arg_tmpl_decl
40	// args = $arg_type_list
41	// named args = $arg_type_list_named
42
43	EOF
44
45	########################################################################
46	# connection_base
47	$gen .= <<EOF;
48	template <${arg_tmpl_decl}>
49	class connection_base${num}
50	{
51	public:
52	typedef connection_base${num}<${arg_type_list}> this_type;
53
54	virtual ~connection_base${num} (){}
55
56	virtual listening_base* getdest () const = 0;
57	virtual void invoke (${arg_type_list}) const = 0;
58	virtual this_type *clone () const { return 0; }
59	virtual this_type duplicate (listening_base pnewdest) const { return 0; }
60	#if 0
61	virtual this_type *clone () const = 0; // { return 0; }
62	virtual this_type duplicate (listening_base pnewdest) const = 0; // { return 0; }
63	#endif
64	};
65
66	EOF
67
68
69	########################################################################
70	# connection
71	$gen .= <<EOF;
72	template<class dest_type, ${arg_tmpl_decl}>
73	class connection${num} : public connection_base${num}<${arg_type_list}>
74	{
75	public:
76	typedef connection_base${num}<${arg_type_list} > base_type;
77	typedef connection${num}< dest_type, ${arg_type_list} > this_type;
78	typedef void (dest_type::*listener_func) (${arg_type_list});
79
80	connection${num} () : m_pobject (0), m_pmemfun (0) { }
81
82	virtual ~connection${num} () { }
83
84	connection${num} (dest_type *pobject, listener_func pfunc) : m_pobject (pobject), m_pmemfun (pfunc) { }
85
86	virtual base_type *clone () const
87	{
88	return new this_type (*this);
89	}
90
91	virtual base_type duplicate (listening_base pnewdest) const
92	{
93	return new this_type (dynamic_cast<dest_type *> (pnewdest), m_pmemfun);
94	}
95
96	virtual listening_base* getdest () const
97	{
98	return m_pobject;
99	}
100
101	virtual void invoke (${arg_type_list_named}) const
102	{
103	(m_pobject->*m_pmemfun) (${arg_params_names});
104	}
105
106	private:
107	dest_type* m_pobject;
108	listener_func m_pmemfun;
109	};
110
111	EOF
112
113
114	########################################################################
115	# event
116	$gen .= <<EOF;
117	template<${arg_tmpl_decl} >
118	class event${num} : public event_base
119	{
120	public:
121	typedef has_listeners listening_base;
122	typedef std::list<connection_base${num}<${arg_type_list}> *>
123	connection_list;
124
125	event${num} () { }
126
127	event${num} (const event${num}<${arg_type_list}> &s) : event_base (s)
128	{
129	if (&s == this)
130	return;
131
132	this->copy_connections (s.connections (), this->connections ());
133	}
134
135
136	template<class desttype>
137	void attach (desttype* plistener, void (desttype::*pmemfun) (${arg_type_list}))
138	{
139	connection_base${num}<${arg_type_list}> *conn = new connection${num}<desttype, ${arg_type_list}> (plistener, pmemfun);
140	this->connections ().push_back (conn);
141	plistener->add_invoker (this);
142	}
143
144	void invoke (${arg_type_list_named}) const
145	{
146	typename connection_list::const_iterator it;
147	typename connection_list::const_iterator it_end = this->connections ().end ();
148
149	for (it = this->connections ().begin (); it != it_end; ++it)
150	(*it)->invoke (${arg_params_names});
151	}
152
153	void operator () (${arg_type_list_named}) const
154	{
155	this->invoke (${arg_params_names});
156	}
157
158	event${num} &operator= (const event${num} &s)
159	{
160	this->copy_connections (s.connections (), this->connections ());
161	return *this;
162	}
163
164	~event${num} ()
165	{
166	disconnect_all ();
167	}
168
169	void disconnect_all ()
170	{
171	this->free_connections (connections ());
172	}
173
174	bool listener_duplicate (const listening_base oldtarget, listening_base newtarget)
175	{
176	return this->duplicate_connection (oldtarget, newtarget, connections ());
177	}
178
179	protected:
180	bool listener_detach (listening_base *plistener)
181	{
182	return this->detach (plistener, this->connections ());
183	}
184
185	connection_list & connections ()
186	{
187	return this->m_connected_listeners;
188	}
189
190	const connection_list &connections () const
191	{
192	return this->m_connected_listeners;
193	}
194
195	private:
196	connection_list m_connected_listeners;
197	};
198	EOF
199
200	}
201
202	print $gen;