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comparison liboctave/lo-macros.h @ 10419:afe44ee90cbd

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implement generic macro magic for repeated decls
author Jaroslav Hajek <highegg@gmail.com>
date Wed, 17 Mar 2010 10:30:36 +0100
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children fd0a3ac60b0e
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10418:6c19d6fcd7e5 10419:afe44ee90cbd
1 /*
2
3 Copyright (C) 2010 VZLU Prague
4
5 This file is part of Octave.
6
7 Octave is free software; you can redistribute it and/or modify it
8 under the terms of the GNU General Public License as published by the
9 Free Software Foundation; either version 3 of the License, or (at your
10 option) any later version.
11
12 Octave is distributed in the hope that it will be useful, but WITHOUT
13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
15 for more details.
16
17 You should have received a copy of the GNU General Public License
18 along with Octave; see the file COPYING. If not, see
19 <http://www.gnu.org/licenses/>.
20
21 */
22
23 #if !defined (octave_liboctave_macros_h)
24 #define octave_liboctave_macros_h 1
25
26 // Core macros. Iteration is supported up to count 10.
27
28 #define OCT_ITERATE_PARAM_MACRO0(MACRO, PARAM)
29 #define OCT_ITERATE_PARAM_MACRO1(MACRO, PARAM) \
30 MACRO(0, PARAM)
31 #define OCT_ITERATE_PARAM_MACRO2(MACRO, PARAM) \
32 MACRO(0, PARAM) MACRO(1, PARAM)
33 #define OCT_ITERATE_PARAM_MACRO3(MACRO, PARAM) \
34 MACRO(0, PARAM) MACRO(1, PARAM) MACRO(2, PARAM)
35 #define OCT_ITERATE_PARAM_MACRO4(MACRO, PARAM) \
36 MACRO(0, PARAM) MACRO(1, PARAM) MACRO(2, PARAM) MACRO(3, PARAM)
37 #define OCT_ITERATE_PARAM_MACRO5(MACRO, PARAM) \
38 MACRO(0, PARAM) MACRO(1, PARAM) MACRO(2, PARAM) MACRO(3, PARAM) MACRO(4, PARAM)
39 #define OCT_ITERATE_PARAM_MACRO6(MACRO, PARAM) \
40 OCT_ITERATE_PARAM_MACRO5(MACRO, PARAM) MACRO(5, PARAM)
41 #define OCT_ITERATE_PARAM_MACRO7(MACRO, PARAM) \
42 OCT_ITERATE_PARAM_MACRO5(MACRO, PARAM) MACRO(5, PARAM) MACRO(6, PARAM)
43 #define OCT_ITERATE_PARAM_MACRO8(MACRO, PARAM) \
44 OCT_ITERATE_PARAM_MACRO5(MACRO, PARAM) MACRO(5, PARAM) MACRO(6, PARAM) MACRO(7, PARAM)
45 #define OCT_ITERATE_PARAM_MACRO9(MACRO, PARAM) \
46 OCT_ITERATE_PARAM_MACRO8(MACRO, PARAM) MACRO(8, PARAM)
47 #define OCT_ITERATE_PARAM_MACRO10(MACRO, PARAM) \
48 OCT_ITERATE_PARAM_MACRO8(MACRO, PARAM) MACRO(8, PARAM) MACRO(9, PARAM)
49
50 // expands to MACRO(0, PARAM) MACRO(1, PARAM) ... MACRO(NUM-1, PARAM)
51 #define OCT_ITERATE_PARAM_MACRO(MACRO, PARAM, NUM) OCT_ITERATE_PARAM_MACRO##NUM(MACRO,PARAM)
52
53 #define OCT_IF_PARAM0(MACRO, PARAM)
54 #define OCT_IF_PARAM1(MACRO, PARAM) MACRO(PARAM)
55 #define OCT_IF_PARAM2(MACRO, PARAM) MACRO(PARAM)
56 #define OCT_IF_PARAM3(MACRO, PARAM) MACRO(PARAM)
57 #define OCT_IF_PARAM4(MACRO, PARAM) MACRO(PARAM)
58 #define OCT_IF_PARAM5(MACRO, PARAM) MACRO(PARAM)
59 #define OCT_IF_PARAM6(MACRO, PARAM) MACRO(PARAM)
60 #define OCT_IF_PARAM7(MACRO, PARAM) MACRO(PARAM)
61 #define OCT_IF_PARAM8(MACRO, PARAM) MACRO(PARAM)
62 #define OCT_IF_PARAM9(MACRO, PARAM) MACRO(PARAM)
63
64 // expands to MACRO(PARAM) if NUM > 0
65 #define OCT_IF_PARAM(NUM, MACRO, PARAM) OCT_IF_PARAM##NUM(MACRO, PARAM)
66
67 // concatenation and reverse concat
68 #define OCT_CONCAT2(ARG1, ARG2) ARG1 ## ARG2
69 #define OCT_CONCAT2_REVERSE(ARG1, ARG2) ARG2 ## ARG1
70
71 #define OCT_IF_HELPER(X) X
72
73 // expands to X if NUM > 0
74 #define OCT_IF(NUM, X) OCT_IF_PARAM(NUM, OCT_IF_HELPER, X)
75
76 #define OCT_ITERATE_MACRO_HELPER(NUM, MACRO) MACRO(NUM)
77
78 // expands to MACRO(0) ... MACRO(NUM-1)
79 #define OCT_ITERATE_MACRO(MACRO, NUM) OCT_ITERATE_PARAM_MACRO(OCT_ITERATE_MACRO_HELPER, MACRO, NUM)
80
81 #define OCT_MAKE_LIST_HELPER1(ARG) ARG,
82
83 // expands to MACRO(0), MACRO(1), ..., MACRO(NUM-1)
84 #define OCT_MAKE_LIST_HELPER(NUM, MACRO) OCT_IF_PARAM(NUM,OCT_MAKE_LIST_HELPER1,) MACRO(NUM)
85
86 #define OCT_MAKE_LIST(MACRO, NUM) OCT_ITERATE_PARAM_MACRO(OCT_MAKE_LIST_HELPER, MACRO, NUM)
87
88 #define OCT_MAKE_DECL_LIST_HELPER(NUM, PREFIX) \
89 OCT_IF_PARAM(NUM,OCT_MAKE_LIST_HELPER1,) OCT_CONCAT2(PREFIX, NUM)
90
91 // expands to TYPE PREFIX0, TYPE PREFIX1, ..., TYPE PREFIX ## (NUM-1)
92 #define OCT_MAKE_DECL_LIST(TYPE, PREFIX, NUM) \
93 OCT_ITERATE_PARAM_MACRO(OCT_MAKE_DECL_LIST_HELPER, TYPE PREFIX, NUM)
94
95 #endif