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// Macro to construct iterable objects.
%define sb_iterator(TYPE, PREFIX, VALUE_TYPE)
#if !SWIGRUBY
#if SWIGJAVA
%typemap(javainterfaces) TYPE##Iterator "java.util.Iterator<"#VALUE_TYPE">"
%typemap(javacode) TYPE##Iterator %{
@Override
public void remove() {
throw new UnsupportedOperationException();
}
%}
#endif
// Basic types
%inline %{
typedef struct {
PREFIX##_t *ptr;
} TYPE##Iterator;
%}
// Exception to end iteration
#if SWIGJAVA
%exception TYPE##Iterator##::next() {
if (!arg1->ptr) {
jclass cls = (*jenv)->FindClass(jenv, "java/util/NoSuchElementException");
(*jenv)->ThrowNew(jenv, cls, NULL);
return $null;
}
$action;
}
#elif SWIGPYTHON
%exception TYPE##Iterator##::next() {
if (!arg1->ptr) {
SWIG_SetErrorObj(PyExc_StopIteration, SWIG_Py_Void());
SWIG_fail;
}
$action;
}
%exception TYPE##Iterator##::__next__() {
if (!arg1->ptr) {
SWIG_SetErrorObj(PyExc_StopIteration, SWIG_Py_Void());
SWIG_fail;
}
$action;
}
#endif
// Implementation of the iterator itself
%extend TYPE##Iterator {
TYPE##Iterator(PREFIX##_t *ptr) {
TYPE##Iterator *iter = (TYPE##Iterator *)ckd_malloc(sizeof *iter);
iter->ptr = ptr;
return iter;
}
~TYPE##Iterator() {
if ($self->ptr)
PREFIX##_free($self->ptr);
ckd_free($self);
}
#if SWIGJAVA
%newobject next;
VALUE_TYPE * next() {
if ($self->ptr) {
VALUE_TYPE *value = ##VALUE_TYPE##_fromIter($self->ptr);
$self->ptr = ##PREFIX##_next($self->ptr);
return value;
}
return NULL;
}
bool hasNext() {
return $self->ptr != NULL;
}
#elif SWIGJAVASCRIPT
%newobject next;
VALUE_TYPE * next() {
if ($self->ptr) {
VALUE_TYPE *value = ##VALUE_TYPE##_fromIter($self->ptr);
$self->ptr = ##PREFIX##_next($self->ptr);
return value;
}
return NULL;
}
#elif SWIGPYTHON
// Python2
%newobject next;
VALUE_TYPE * next() {
if ($self->ptr) {
VALUE_TYPE *value = ##VALUE_TYPE##_fromIter($self->ptr);
$self->ptr = ##PREFIX##_next($self->ptr);
return value;
}
return NULL;
}
// Python3
%newobject __next__;
VALUE_TYPE * __next__() {
if ($self->ptr) {
VALUE_TYPE *value = ##VALUE_TYPE##_fromIter($self->ptr);
$self->ptr = ##PREFIX##_next($self->ptr);
return value;
}
return NULL;
}
#endif
}
#endif // SWIGRUBY
%enddef
%define sb_iterable(TYPE, ITER_TYPE, PREFIX, INIT_PREFIX, VALUE_TYPE)
// Methods to retrieve the iterator from the container
#if SWIGJAVA
%typemap(javainterfaces) TYPE "Iterable<"#VALUE_TYPE">"
#endif
%extend TYPE {
#if SWIGRUBY
void each() {
##PREFIX##_t *iter = INIT_PREFIX##($self);
while (iter) {
VALUE_TYPE *value = ##VALUE_TYPE##_fromIter(iter);
rb_yield(SWIG_NewPointerObj(SWIG_as_voidptr(value), SWIGTYPE_p_##VALUE_TYPE##, 0 | 0 ));
iter = PREFIX##_next(iter);
}
return;
}
void each(int count) {
##PREFIX##_t *iter = INIT_PREFIX##($self);
int cnt = 0;
while (iter && cnt < count) {
VALUE_TYPE *value = ##VALUE_TYPE##_fromIter(iter);
rb_yield(SWIG_NewPointerObj(SWIG_as_voidptr(value), SWIGTYPE_p_##VALUE_TYPE##, 0 | 0 ));
iter = PREFIX##_next(iter);
cnt++;
}
if (iter)
PREFIX##_free(iter);
return;
}
#elif SWIGJAVA
%newobject iterator;
ITER_TYPE##Iterator * iterator() {
return new_##ITER_TYPE##Iterator(INIT_PREFIX##($self));
}
#else /* PYTHON, JS */
%newobject __iter__;
ITER_TYPE##Iterator * __iter__() {
return new_##ITER_TYPE##Iterator(INIT_PREFIX##($self));
}
#endif
}
%enddef
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