add circuitpython code

1 files changed, 79 insertions, 0 deletions

diff --git a/circuitpython/py/objzip.c b/circuitpython/py/objzip.c
new file mode 100644
index 0000000..9171649
--- /dev/null
+++ b/circuitpython/py/objzip.c
@@ -0,0 +1,79 @@
+/*
+ * This file is part of the MicroPython project, http://micropython.org/
+ *
+ * The MIT License (MIT)
+ *
+ * SPDX-FileCopyrightText: Copyright (c) 2013, 2014 Damien P. George
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#include <stdlib.h>
+#include <assert.h>
+
+#include "py/objtuple.h"
+#include "py/runtime.h"
+
+typedef struct _mp_obj_zip_t {
+    mp_obj_base_t base;
+    size_t n_iters;
+    mp_obj_t iters[];
+} mp_obj_zip_t;
+
+STATIC mp_obj_t zip_make_new(const mp_obj_type_t *type, size_t n_args, size_t n_kw, const mp_obj_t *args) {
+    mp_arg_check_num(n_args, n_kw, 0, MP_OBJ_FUN_ARGS_MAX, false);
+
+    mp_obj_zip_t *o = m_new_obj_var(mp_obj_zip_t, mp_obj_t, n_args);
+    o->base.type = type;
+    o->n_iters = n_args;
+    for (size_t i = 0; i < n_args; i++) {
+        o->iters[i] = mp_getiter(args[i], NULL);
+    }
+    return MP_OBJ_FROM_PTR(o);
+}
+
+STATIC mp_obj_t zip_iternext(mp_obj_t self_in) {
+    mp_check_self(mp_obj_is_type(self_in, &mp_type_zip));
+    mp_obj_zip_t *self = MP_OBJ_TO_PTR(self_in);
+    if (self->n_iters == 0) {
+        return MP_OBJ_STOP_ITERATION;
+    }
+    mp_obj_tuple_t *tuple = MP_OBJ_TO_PTR(mp_obj_new_tuple(self->n_iters, NULL));
+
+    for (size_t i = 0; i < self->n_iters; i++) {
+        mp_obj_t next = mp_iternext(self->iters[i]);
+        if (next == MP_OBJ_STOP_ITERATION) {
+            mp_obj_tuple_del(MP_OBJ_FROM_PTR(tuple));
+            return MP_OBJ_STOP_ITERATION;
+        }
+        tuple->items[i] = next;
+    }
+    return MP_OBJ_FROM_PTR(tuple);
+}
+
+const mp_obj_type_t mp_type_zip = {
+    { &mp_type_type },
+    .flags = MP_TYPE_FLAG_EXTENDED,
+    .name = MP_QSTR_zip,
+    .make_new = zip_make_new,
+    MP_TYPE_EXTENDED_FIELDS(
+        .getiter = mp_identity_getiter,
+        .iternext = zip_iternext,
+        ),
+};