1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
|
// Copyright (C) by Josh Blum. See LICENSE.txt for licensing information.
#ifndef INCLUDED_GRAS_FACTORY_HPP
#define INCLUDED_GRAS_FACTORY_HPP
#include <gras/gras.hpp>
#include <gras/element.hpp>
#include <PMC/PMC.hpp>
#include <string>
/*!
* Register a block's factory function:
* Declare this macro at the global scope in a cpp file.
* The block will register at static initialization time.
*/
#define GRAS_REGISTER_FACTORY(name, fcn) \
GRAS_STATIC_BLOCK(fcn) \
{gras::Factory::register_make(name, &fcn);}
namespace gras
{
/*!
* Element factory:
* - Register factory functions into the global factory.
* - Call make() to create element from global factory.
*
* Example register a factory function:
* gras::Factory::register_make("make_my_block", &make_my_block);
*
* Example call into the factory:
* gras::Element *my_block = gras::Factory::make("make_my_block", arg0, arg1);
*/
struct GRAS_API Factory
{
/*******************************************************************
* Register API - don't look here, template magic, not helpful
******************************************************************/
#for $NARGS in range($MAX_ARGS)
template <typename ReturnType, $expand('typename A%d', $NARGS)>
static void register_make(const std::string &name, ReturnType(*fcn)($expand('const A%d &', $NARGS)));
#end for
/*******************************************************************
* Make API - don't look here, template magic, not helpful
******************************************************************/;
#for $NARGS in range($MAX_ARGS)
template <$expand('typename A%d', $NARGS)>
static Element *make(const std::string &name, $expand('const A%d &', $NARGS));
#end for
/*******************************************************************
* Private registration hooks
******************************************************************/
static void _register_make(const std::string &, void *);
static Element *_handle_make(const std::string &, const PMCC &);
};
}
#include <gras/detail/factory.hpp>
#endif /*INCLUDED_GRAS_FACTORY_HPP*/
|
