1 | #!/usr/bin/perl |
1 | #!/usr/bin/perl |
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2 | |
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3 | use strict; |
2 | |
4 | |
3 | print <<EOF; |
5 | print <<EOF; |
4 | // THIS IS A GENERATED FILE: RUN callback.pl to regenerate it |
6 | // THIS IS A GENERATED FILE: RUN callback.pl to regenerate it |
5 | // THIS IS A GENERATED FILE: callback.pl is part of the GVPE |
7 | // THIS IS A GENERATED FILE: callback.pl is part of the GVPE |
6 | // THIS IS A GENERATED FILE: distribution. |
8 | // THIS IS A GENERATED FILE: distribution. |
7 | |
9 | |
8 | /* |
10 | /* |
9 | callback.h -- C++ callback mechanism |
11 | callback.h -- C++ callback mechanism |
10 | Copyright (C) 2003-2005 Marc Lehmann <pcg\@goof.com> |
12 | Copyright (C) 2003-2007 Marc Lehmann <pcg\@goof.com> |
11 | |
13 | |
12 | This file is part of GVPE. |
14 | This file is part of GVPE. |
13 | |
15 | |
14 | GVPE is free software; you can redistribute it and/or modify |
16 | GVPE is free software; you can redistribute it and/or modify |
15 | it under the terms of the GNU General Public License as published by |
17 | it under the terms of the GNU General Public License as published by |
… | |
… | |
27 | */ |
29 | */ |
28 | |
30 | |
29 | #ifndef CALLBACK_H__ |
31 | #ifndef CALLBACK_H__ |
30 | #define CALLBACK_H__ |
32 | #define CALLBACK_H__ |
31 | |
33 | |
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34 | #define CALLBACK_H_VERSION 3 |
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35 | |
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36 | template<typename signature> |
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37 | struct callback; |
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38 | |
32 | EOF |
39 | EOF |
33 | |
40 | |
34 | for my $a (0..7) { |
41 | for my $a (0..10) { |
35 | my $CLASS = join "", map ", class A$_", 1..$a; |
42 | my $CLASS = join "", map ", class A$_", 1..$a; |
36 | my $TYPE = join ", ", map "A$_", 1..$a; |
43 | my $TYPE = join ", ", map "A$_", 1..$a; |
37 | my $ARG = join ", ", map "a$_", 1..$a; |
44 | my $ARG = join ", ", map "a$_", 1..$a; |
38 | my $TYPEARG = join ", ", map "A$_ a$_", 1..$a; |
45 | my $TYPEARG = join ", ", map "A$_ a$_", 1..$a; |
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46 | my $TYPEDEFS = join " ", map "typedef A$_ arg$_\_type;", 1..$a; |
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47 | my $TYPEvoid = $TYPE ? $TYPE : "void"; |
39 | my $_ARG = $ARG ? ", $ARG" : ""; |
48 | my $_ARG = $ARG ? ", $ARG" : ""; |
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49 | my $_TYPE = $TYPE ? ", $TYPE" : ""; |
40 | my $_TYPEARG = $TYPEARG ? ", $TYPEARG" : ""; |
50 | my $_TYPEARG = $TYPEARG ? ", $TYPEARG" : ""; |
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51 | my $_TTYPE = $a ? join "", map ", typename T::arg$_\_type", 1..$a : ""; |
41 | |
52 | |
42 | print <<EOF; |
53 | print <<EOF; |
43 | template<class R$CLASS> |
54 | template<class R$CLASS> |
44 | class callback$a { |
55 | struct callback<R ($TYPE)> |
45 | struct object { }; |
56 | { |
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57 | typedef R (*ptr_type)(void *self$_TYPE); |
46 | |
58 | |
47 | void *obj; |
59 | private: |
48 | R (object::*meth)($TYPE); |
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49 | |
60 | |
50 | /* a proxy is a kind of recipe on how to call a specific class method */ |
61 | void *self; |
51 | struct proxy_base { |
62 | ptr_type func; |
52 | virtual R call (void *obj, R (object::*meth)($TYPE)$_TYPEARG) = 0; |
63 | |
53 | }; |
64 | protected: |
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65 | |
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66 | template<typename method> |
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67 | struct thunktype; |
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68 | |
54 | template<class O1, class O2> |
69 | template<class klass> |
55 | struct proxy : proxy_base { |
70 | struct thunktype<R (klass::*)> |
56 | virtual R call (void *obj, R (object::*meth)($TYPE)$_TYPEARG) |
71 | { |
57 | { |
72 | typedef klass K; |
58 | return (R)((reinterpret_cast<O1 *>(obj)) ->* (reinterpret_cast<R (O2::*)($TYPE)>(meth))) |
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59 | ($ARG); |
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60 | } |
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61 | }; |
73 | }; |
62 | |
74 | |
63 | proxy_base *prxy; |
75 | template<class klass, R (klass::*method)($TYPE)> |
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76 | static R thunk (void *self$_TYPEARG) |
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77 | { |
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78 | klass *obj = static_cast<klass *>(self); |
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79 | return (obj->*method) ($ARG); |
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80 | } |
64 | |
81 | |
65 | public: |
82 | public: |
66 | template<class O1, class O2> |
83 | template<class K, R (K::*method)($TYPE)> |
67 | callback$a (O1 *object, R (O2::*method)($TYPE)) |
84 | void set (K *object) |
68 | { |
85 | { |
69 | static proxy<O1,O2> p; |
86 | self = object; |
70 | obj = reinterpret_cast<void *>(object); |
87 | func = thunk<K, method>; |
71 | meth = reinterpret_cast<R (object::*)($TYPE)>(method); |
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72 | prxy = &p; |
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73 | } |
88 | } |
74 | |
89 | |
75 | R call($TYPEARG) const |
90 | R call ($TYPEARG) const |
76 | { |
91 | { |
77 | return prxy->call (obj, meth$_ARG); |
92 | return func (self$_ARG); |
78 | } |
93 | } |
79 | |
94 | |
80 | R operator ()($TYPEARG) const |
95 | R operator ()($TYPEARG) const |
81 | { |
96 | { |
82 | return call ($ARG); |
97 | return call ($ARG); |
83 | } |
98 | } |
84 | }; |
99 | }; |
85 | |
100 | |
86 | EOF |
101 | EOF |
87 | } |
102 | } |
88 | |
103 | |
89 | print <<EOF |
104 | print <<EOF |
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105 | |
90 | #endif |
106 | #endif |
91 | EOF |
107 | EOF |
92 | |
108 | |