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
64
65
66
67
68
69
70
71
72
73
74
75
|
/* File : example.i */
%module example
%include exception.i
%include typemaps.i
extern int gcd(int x, int y);
%typemap(guile,in) (int argc, char *argv[]) {
int i;
SCM *v;
if (!(SCM_NIMP($input) && SCM_VECTORP($input))) {
SWIG_exception(SWIG_ValueError, "Expecting a vector");
return;
}
$1 = SCM_LENGTH($input);
if ($1 == 0) {
SWIG_exception(SWIG_ValueError, "Vector must contain at least 1 element");
}
$2 = (char **) malloc(($1+1)*sizeof(char *));
v = SCM_VELTS($input);
for (i = 0; i < $1; i++) {
if (!(SCM_NIMP(v[i]) && SCM_STRINGP(v[i]))) {
free($2);
SWIG_exception(SWIG_ValueError, "Vector items must be strings");
return;
}
$2[i] = SCM_CHARS(v[i]);
}
$2[i] = 0;
}
%typemap(guile,freearg) (int argc, char *argv[]) {
free($2);
}
extern int gcdmain(int argc, char *argv[]);
%typemap(guile,in) (char *bytes, int len) {
if (!(SCM_NIMP($input) && SCM_STRINGP($input))) {
SWIG_exception(SWIG_ValueError, "Expecting a string");
}
$1 = SCM_CHARS($input);
$2 = SCM_LENGTH($input);
}
extern int count(char *bytes, int len, char c);
/* This example shows how to wrap a function that mutates a string */
%typemap(guile,in) (char *str, int len) {
$1 = gh_scm2newstr($input,&$2);
}
/* Return the mutated string as a new object. */
%typemap(guile,argout) (char *str, int len) {
SWIG_APPEND_VALUE(gh_str2scm($1,$2));
if ($1) scm_must_free($1);
}
extern void capitalize(char *str, int len);
/* A multi-valued constraint. Force two arguments to lie
inside the unit circle */
%typemap(check) (double cx, double cy) {
double a = $1*$1 + $2*$2;
if (a > 1.0) {
SWIG_exception(SWIG_ValueError,"$1_name and $2_name must be in unit circle");
}
}
extern void circle(double cx, double cy);
|
