static SCM call_callable(SCM scm_args)
{
SCM stack = scm_make_stack(SCM_BOOL_T, SCM_EOL);
SCM frame = scm_stack_ref(stack, scm_from_int(0));
SCM proc = scm_frame_procedure(frame);
PyObject *callable = scm_to_pointer(scm_assq_ref(gsubr_alist, proc));
scm_dynwind_begin(0);
PyObject *py_args = scm2py(scm_args);
if (py_args == NULL)
py2scm_exception(); /* does not return */
scm_dynwind_py_decref(py_args);
struct call_callable_data data = { callable, py_args };
PyObject *py_result = (PyObject *)scm_without_guile(
(void *(*)(void *))call_callable1, &data);
if (py_result == NULL)
py2scm_exception(); /* does not return */
scm_dynwind_py_decref(py_result);
SCM scm_result = py2scm(py_result);
scm_dynwind_end();
return scm_result;
}
static PyObject *load_wrapper(PyObject *name_arg)
{
return scm2py(
scm_eval(
scm_list_2(scm_from_utf8_symbol("load"),
py2scm(name_arg)),
scm_current_module()));
}
static void *define_wrapper(struct define_data *data)
{
return scm_c_define(data->name, py2scm(data->value));
}
SCM py2scm(PyObject *value)
{
if (value == Py_None) {
return SCM_UNSPECIFIED;
}
if (PyBool_Check(value)) {
int v = PyObject_IsTrue(value);
if (v == -1)
return NULL;
return scm_from_bool(v);
}
if (PyInt_Check(value)) {
long v = PyInt_AsLong(value);
if (PyErr_Occurred())
return NULL;
return scm_from_long(v);
}
if (PyFloat_Check(value)) {
double v = PyFloat_AsDouble(value);
if (PyErr_Occurred())
return NULL;
return scm_from_double(v);
}
if (PyString_Check(value)) {
const char *s = PyString_AsString(value);
if (s == NULL)
return NULL;
return scm_from_utf8_stringn(s, PyString_Size(value));
}
if (PyUnicode_Check(value)) {
scm_dynwind_begin(0);
PyObject *utf8_str = PyUnicode_AsUTF8String(value);
if (utf8_str == NULL) {
scm_dynwind_end();
return NULL;
}
scm_dynwind_py_decref(utf8_str);
const char *s = PyString_AsString(utf8_str);
if (s == NULL) {
scm_dynwind_end();
return NULL;
}
SCM result = scm_from_utf8_stringn(s, PyString_Size(utf8_str));
scm_dynwind_end();
return result;
}
if (PySequence_Check(value)) {
unsigned int i = PySequence_Size(value);
SCM r = SCM_EOL;
while (i-- > 0) {
PyObject *item = PySequence_GetItem(value, i);
r = scm_cons(py2scm(item), r);
}
return r;
}
if (PyObject_TypeCheck(value, &ProcedureType))
return ((Procedure *)value)->proc;
if (PyCallable_Check(value)) {
SCM gsubr = scm_c_make_gsubr(
"<Python function>", 0, 0, 1, &call_callable);
Py_INCREF(value);
SCM ptr = scm_from_pointer(value, (void (*)(void *))Py_DecRef);
gsubr_alist = scm_acons(gsubr, ptr, gsubr_alist);
return gsubr;
}
char buf[BUFSIZ];
snprintf(buf, BUFSIZ, "Python type \"%.50s\" doesn't have a "
"corresponding Guile type",
value->ob_type->tp_name);
scm_error(scm_from_utf8_symbol("misc-error"), NULL, buf,
SCM_EOL, SCM_EOL);
/* does not return */
fprintf(stderr, "*** scm_error shouldn't have returned ***\n");
return SCM_UNSPECIFIED;
}
