Merge tag 'v1.9.1'2.0.0-alpha.0

Fixes for stmhal USB mass storage, lwIP bindings and VFS regressions

This release provides an important fix for the USB mass storage device in
the stmhal port by implementing the SCSI SYNCHRONIZE_CACHE command, which
is now require by some Operating Systems.  There are also fixes for the
lwIP bindings to improve non-blocking sockets and error codes.  The VFS has
some regressions fixed including the ability to statvfs the root.

All changes are listed below.

py core:
- modbuiltins: add core-provided version of input() function
- objstr: catch case of negative "maxsplit" arg to str.rsplit()
- persistentcode: allow to compile with complex numbers disabled
- objstr: allow to compile with obj-repr D, and unicode disabled
- modsys: allow to compile with obj-repr D and PY_ATTRTUPLE disabled
- provide mp_decode_uint_skip() to help reduce stack usage
- makeqstrdefs.py: make script run correctly with Python 2.6
- objstringio: if created from immutable object, follow copy on write policy

extmod:
- modlwip: connect: for non-blocking mode, return EINPROGRESS
- modlwip: fix error codes for duplicate calls to connect()
- modlwip: accept: fix error code for non-blocking mode
- vfs: allow to statvfs the root directory
- vfs: allow "buffering" and "encoding" args to VFS's open()
- modframebuf: fix signed/unsigned comparison pendantic warning

lib:
- libm: use isfinite instead of finitef, for C99 compatibility
- utils/interrupt_char: remove support for KBD_EXCEPTION disabled

tests:
- basics/string_rsplit: add tests for negative "maxsplit" argument
- float: convert "sys.exit()" to "raise SystemExit"
- float/builtin_float_minmax: PEP8 fixes
- basics: convert "sys.exit()" to "raise SystemExit"
- convert remaining "sys.exit()" to "raise SystemExit"

unix port:
- convert to use core-provided version of built-in import()
- Makefile: replace references to make with $(MAKE)

windows port:
- convert to use core-provided version of built-in import()

qemu-arm port:
- Makefile: adjust object-file lists to get correct dependencies
- enable micropython.mem_*() functions to allow more tests

stmhal port:
- boards: enable DAC for NUCLEO_F767ZI board
- add support for NUCLEO_F446RE board
- pass USB handler as parameter to allow more than one USB handler
- usb: use local USB handler variable in Start-of-Frame handler
- usb: make state for USB device private to top-level USB driver
- usbdev: for MSC implement SCSI SYNCHRONIZE_CACHE command
- convert from using stmhal's input() to core provided version

cc3200 port:
- convert from using stmhal's input() to core provided version

teensy port:
- convert from using stmhal's input() to core provided version

esp8266 port:
- Makefile: replace references to make with $(MAKE)
- Makefile: add clean-modules target
- convert from using stmhal's input() to core provided version

zephyr port:
- modusocket: getaddrinfo: Fix mp_obj_len() usage
- define MICROPY_PY_SYS_PLATFORM (to "zephyr")
- machine_pin: use native Zephyr types for Zephyr API calls

docs:
- machine.Pin: remove out_value() method
- machine.Pin: add on() and off() methods
- esp8266: consistently replace Pin.high/low methods with .on/off
- esp8266/quickref: polish Pin.on()/off() examples
- network: move confusingly-named cc3200 Server class to its reference
- uos: deconditionalize, remove minor port-specific details
- uos: move cc3200 port legacy VFS mounting functions to its ref doc
- machine: sort machine classes in logical order, not alphabetically
- network: first step to describe standard network class interface

examples:
- embedding: use core-provided KeyboardInterrupt object

1 files changed, 17 insertions, 21 deletions

diff --git a/py/objtuple.c b/py/objtuple.c
index fdc0a23a4..09c12463f 100644
--- a/py/objtuple.c
+++ b/py/objtuple.c
@@ -32,8 +32,6 @@
 #include "py/runtime0.h"
 #include "py/runtime.h"
 
-STATIC mp_obj_t mp_obj_new_tuple_iterator(mp_obj_tuple_t *tuple, mp_uint_t cur);
-
 /******************************************************************************/
 /* tuple                                                                      */
 
@@ -45,7 +43,7 @@ void mp_obj_tuple_print(const mp_print_t *print, mp_obj_t o_in, mp_print_kind_t
         mp_print_str(print, "(");
         kind = PRINT_REPR;
     }
-    for (mp_uint_t i = 0; i < o->len; i++) {
+    for (size_t i = 0; i < o->len; i++) {
         if (i > 0) {
             mp_print_str(print, ", ");
         }
@@ -80,11 +78,11 @@ STATIC mp_obj_t mp_obj_tuple_make_new(const mp_obj_type_t *type_in, size_t n_arg
 
             // TODO optimise for cases where we know the length of the iterator
 
-            mp_uint_t alloc = 4;
-            mp_uint_t len = 0;
+            size_t alloc = 4;
+            size_t len = 0;
             mp_obj_t *items = m_new(mp_obj_t, alloc);
 
-            mp_obj_t iterable = mp_getiter(args[0]);
+            mp_obj_t iterable = mp_getiter(args[0], NULL);
             mp_obj_t item;
             while ((item = mp_iternext(iterable)) != MP_OBJ_STOP_ITERATION) {
                 if (len >= alloc) {
@@ -127,7 +125,7 @@ mp_obj_t mp_obj_tuple_unary_op(mp_uint_t op, mp_obj_t self_in) {
         case MP_UNARY_OP_HASH: {
             // start hash with pointer to empty tuple, to make it fairly unique
             mp_int_t hash = (mp_int_t)mp_const_empty_tuple;
-            for (mp_uint_t i = 0; i < self->len; i++) {
+            for (size_t i = 0; i < self->len; i++) {
                 hash += MP_OBJ_SMALL_INT_VALUE(mp_unary_op(MP_UNARY_OP_HASH, self->items[i]));
             }
             return MP_OBJ_NEW_SMALL_INT(hash);
@@ -140,7 +138,8 @@ mp_obj_t mp_obj_tuple_unary_op(mp_uint_t op, mp_obj_t self_in) {
 mp_obj_t mp_obj_tuple_binary_op(mp_uint_t op, mp_obj_t lhs, mp_obj_t rhs) {
     mp_obj_tuple_t *o = MP_OBJ_TO_PTR(lhs);
     switch (op) {
-        case MP_BINARY_OP_ADD: {
+        case MP_BINARY_OP_ADD:
+        case MP_BINARY_OP_INPLACE_ADD: {
             if (!mp_obj_is_subclass_fast(MP_OBJ_FROM_PTR(mp_obj_get_type(rhs)), MP_OBJ_FROM_PTR(&mp_type_tuple))) {
                 return MP_OBJ_NULL; // op not supported
             }
@@ -188,17 +187,13 @@ mp_obj_t mp_obj_tuple_subscr(mp_obj_t self_in, mp_obj_t index, mp_obj_t value) {
             return MP_OBJ_FROM_PTR(res);
         }
 #endif
-        mp_uint_t index_value = mp_get_index(self->base.type, self->len, index, false);
+        size_t index_value = mp_get_index(self->base.type, self->len, index, false);
         return self->items[index_value];
     } else {
         return MP_OBJ_NULL; // op not supported
     }
 }
 
-mp_obj_t mp_obj_tuple_getiter(mp_obj_t o_in) {
-    return mp_obj_new_tuple_iterator(MP_OBJ_TO_PTR(o_in), 0);
-}
-
 STATIC mp_obj_t tuple_count(mp_obj_t self_in, mp_obj_t value) {
     mp_check_self(MP_OBJ_IS_TYPE(self_in, &mp_type_tuple));
     mp_obj_tuple_t *self = MP_OBJ_TO_PTR(self_in);
@@ -235,7 +230,7 @@ const mp_obj_type_t mp_type_tuple = {
 // the zero-length tuple
 const mp_obj_tuple_t mp_const_empty_tuple_obj = {{&mp_type_tuple}, 0};
 
-mp_obj_t mp_obj_new_tuple(mp_uint_t n, const mp_obj_t *items) {
+mp_obj_t mp_obj_new_tuple(size_t n, const mp_obj_t *items) {
     if (n == 0) {
         return mp_const_empty_tuple;
     }
@@ -243,14 +238,14 @@ mp_obj_t mp_obj_new_tuple(mp_uint_t n, const mp_obj_t *items) {
     o->base.type = &mp_type_tuple;
     o->len = n;
     if (items) {
-        for (mp_uint_t i = 0; i < n; i++) {
+        for (size_t i = 0; i < n; i++) {
             o->items[i] = items[i];
         }
     }
     return MP_OBJ_FROM_PTR(o);
 }
 
-void mp_obj_tuple_get(mp_obj_t self_in, mp_uint_t *len, mp_obj_t **items) {
+void mp_obj_tuple_get(mp_obj_t self_in, size_t *len, mp_obj_t **items) {
     assert(MP_OBJ_IS_TYPE(self_in, &mp_type_tuple));
     mp_obj_tuple_t *self = MP_OBJ_TO_PTR(self_in);
     *len = self->len;
@@ -270,7 +265,7 @@ typedef struct _mp_obj_tuple_it_t {
     mp_obj_base_t base;
     mp_fun_1_t iternext;
     mp_obj_tuple_t *tuple;
-    mp_uint_t cur;
+    size_t cur;
 } mp_obj_tuple_it_t;
 
 STATIC mp_obj_t tuple_it_iternext(mp_obj_t self_in) {
@@ -284,11 +279,12 @@ STATIC mp_obj_t tuple_it_iternext(mp_obj_t self_in) {
     }
 }
 
-STATIC mp_obj_t mp_obj_new_tuple_iterator(mp_obj_tuple_t *tuple, mp_uint_t cur) {
-    mp_obj_tuple_it_t *o = m_new_obj(mp_obj_tuple_it_t);
+mp_obj_t mp_obj_tuple_getiter(mp_obj_t o_in, mp_obj_iter_buf_t *iter_buf) {
+    assert(sizeof(mp_obj_tuple_it_t) <= sizeof(mp_obj_iter_buf_t));
+    mp_obj_tuple_it_t *o = (mp_obj_tuple_it_t*)iter_buf;
     o->base.type = &mp_type_polymorph_iter;
     o->iternext = tuple_it_iternext;
-    o->tuple = tuple;
-    o->cur = cur;
+    o->tuple = MP_OBJ_TO_PTR(o_in);
+    o->cur = 0;
     return MP_OBJ_FROM_PTR(o);
 }