py: Remove use of int type in obj.h.

Part of code cleanup, working towards resolving issue #50.

py/obj.c

@@ -111,7 +111,7 @@ void mp_obj_print_exception(mp_obj_t exc) {
     printf("\n");
 }
 
-int mp_obj_is_true(mp_obj_t arg) {
+bool mp_obj_is_true(mp_obj_t arg) {
     if (arg == mp_const_false) {
         return 0;
     } else if (arg == mp_const_true) {
@@ -414,7 +414,7 @@ mp_obj_t mp_identity(mp_obj_t self) {
 }
 MP_DEFINE_CONST_FUN_OBJ_1(mp_identity_obj, mp_identity);
 
-bool mp_get_buffer(mp_obj_t obj, mp_buffer_info_t *bufinfo, int flags) {
+bool mp_get_buffer(mp_obj_t obj, mp_buffer_info_t *bufinfo, mp_uint_t flags) {
     mp_obj_type_t *type = mp_obj_get_type(obj);
     if (type->buffer_p.get_buffer == NULL) {
         return false;
@@ -426,7 +426,7 @@ bool mp_get_buffer(mp_obj_t obj, mp_buffer_info_t *bufinfo, int flags) {
     return true;
 }
 
-void mp_get_buffer_raise(mp_obj_t obj, mp_buffer_info_t *bufinfo, int flags) {
+void mp_get_buffer_raise(mp_obj_t obj, mp_buffer_info_t *bufinfo, mp_uint_t flags) {
     if (!mp_get_buffer(obj, bufinfo, flags)) {
         nlr_raise(mp_obj_new_exception_msg(&mp_type_TypeError, "object with buffer protocol required"));
     }

py/obj.h

@@ -212,8 +212,8 @@ typedef struct _mp_buffer_info_t {
     //int ver; // ?
 
     void *buf;    // can be NULL if len == 0
-    mp_int_t len; // in bytes
-    int typecode; // as per binary.h
+    mp_int_t len; // in bytes; TODO should it be mp_uint_t?
+    int typecode; // as per binary.h; TODO what is the correct type to use?
 
     // Rationale: to load arbitrary-sized sprites directly to LCD
     // Cons: a bit adhoc usecase
@@ -223,10 +223,10 @@ typedef struct _mp_buffer_info_t {
 #define MP_BUFFER_WRITE (2)
 #define MP_BUFFER_RW (MP_BUFFER_READ | MP_BUFFER_WRITE)
 typedef struct _mp_buffer_p_t {
-    mp_int_t (*get_buffer)(mp_obj_t obj, mp_buffer_info_t *bufinfo, int flags);
+    mp_int_t (*get_buffer)(mp_obj_t obj, mp_buffer_info_t *bufinfo, mp_uint_t flags);
 } mp_buffer_p_t;
-bool mp_get_buffer(mp_obj_t obj, mp_buffer_info_t *bufinfo, int flags);
-void mp_get_buffer_raise(mp_obj_t obj, mp_buffer_info_t *bufinfo, int flags);
+bool mp_get_buffer(mp_obj_t obj, mp_buffer_info_t *bufinfo, mp_uint_t flags);
+void mp_get_buffer_raise(mp_obj_t obj, mp_buffer_info_t *bufinfo, mp_uint_t flags);
 
 // Stream protocol
 #define MP_STREAM_ERROR (-1)
@@ -236,7 +236,7 @@ typedef struct _mp_stream_p_t {
     mp_uint_t (*read)(mp_obj_t obj, void *buf, mp_uint_t size, int *errcode);
     mp_uint_t (*write)(mp_obj_t obj, const void *buf, mp_uint_t size, int *errcode);
     // add seek() ?
-    int is_text : 1; // default is bytes, set this for text stream
+    mp_uint_t is_text : 1; // default is bytes, set this for text stream
 } mp_stream_p_t;
 
 struct _mp_obj_type_t {
@@ -403,7 +403,7 @@ void mp_obj_print_helper(void (*print)(void *env, const char *fmt, ...), void *e
 void mp_obj_print(mp_obj_t o, mp_print_kind_t kind);
 void mp_obj_print_exception(mp_obj_t exc);
 
-int mp_obj_is_true(mp_obj_t arg);
+bool mp_obj_is_true(mp_obj_t arg);
 
 // TODO make these all lower case when they have proven themselves
 static inline bool MP_OBJ_IS_OBJ(mp_const_obj_t o) { return ((((mp_int_t)(o)) & 3) == 0); }
@@ -575,8 +575,8 @@ bool mp_seq_get_fast_slice_indexes(mp_uint_t len, mp_obj_t slice, mp_bound_slice
 #endif
 #define mp_seq_copy(dest, src, len, item_t) memcpy(dest, src, len * sizeof(item_t))
 #define mp_seq_cat(dest, src1, len1, src2, len2, item_t) { memcpy(dest, src1, (len1) * sizeof(item_t)); memcpy(dest + (len1), src2, (len2) * sizeof(item_t)); }
-bool mp_seq_cmp_bytes(int op, const byte *data1, mp_uint_t len1, const byte *data2, mp_uint_t len2);
-bool mp_seq_cmp_objs(int op, const mp_obj_t *items1, mp_uint_t len1, const mp_obj_t *items2, mp_uint_t len2);
+bool mp_seq_cmp_bytes(mp_uint_t op, const byte *data1, mp_uint_t len1, const byte *data2, mp_uint_t len2);
+bool mp_seq_cmp_objs(mp_uint_t op, const mp_obj_t *items1, mp_uint_t len1, const mp_obj_t *items2, mp_uint_t len2);
 mp_obj_t mp_seq_index_obj(const mp_obj_t *items, mp_uint_t len, mp_uint_t n_args, const mp_obj_t *args);
 mp_obj_t mp_seq_count_obj(const mp_obj_t *items, mp_uint_t len, mp_obj_t value);
 mp_obj_t mp_seq_extract_slice(mp_uint_t len, const mp_obj_t *seq, mp_bound_slice_t *indexes);

py/objarray.c

@@ -52,7 +52,7 @@ typedef struct _mp_obj_array_t {
 STATIC mp_obj_t array_iterator_new(mp_obj_t array_in);
 STATIC mp_obj_array_t *array_new(char typecode, uint n);
 STATIC mp_obj_t array_append(mp_obj_t self_in, mp_obj_t arg);
-STATIC mp_int_t array_get_buffer(mp_obj_t o_in, mp_buffer_info_t *bufinfo, int flags);
+STATIC mp_int_t array_get_buffer(mp_obj_t o_in, mp_buffer_info_t *bufinfo, mp_uint_t flags);
 
 /******************************************************************************/
 /* array                                                                       */
@@ -223,7 +223,7 @@ STATIC mp_obj_t array_subscr(mp_obj_t self_in, mp_obj_t index_in, mp_obj_t value
     }
 }
 
-STATIC mp_int_t array_get_buffer(mp_obj_t o_in, mp_buffer_info_t *bufinfo, int flags) {
+STATIC mp_int_t array_get_buffer(mp_obj_t o_in, mp_buffer_info_t *bufinfo, mp_uint_t flags) {
     mp_obj_array_t *o = o_in;
     bufinfo->buf = o->items;
     bufinfo->len = o->len * mp_binary_get_size('@', o->typecode, NULL);

py/objstr.c

@@ -1618,7 +1618,7 @@ STATIC mp_obj_t str_encode(mp_uint_t n_args, const mp_obj_t *args) {
 }
 #endif
 
-mp_int_t mp_obj_str_get_buffer(mp_obj_t self_in, mp_buffer_info_t *bufinfo, int flags) {
+mp_int_t mp_obj_str_get_buffer(mp_obj_t self_in, mp_buffer_info_t *bufinfo, mp_uint_t flags) {
     if (flags == MP_BUFFER_READ) {
         GET_STR_DATA_LEN(self_in, str_data, str_len);
         bufinfo->buf = (void*)str_data;

py/objstr.h

@@ -54,7 +54,7 @@ mp_obj_t mp_obj_str_format(mp_uint_t n_args, const mp_obj_t *args);
 mp_obj_t mp_obj_new_str_of_type(const mp_obj_type_t *type, const byte* data, uint len);
 
 mp_obj_t mp_obj_str_binary_op(mp_uint_t op, mp_obj_t lhs_in, mp_obj_t rhs_in);
-mp_int_t mp_obj_str_get_buffer(mp_obj_t self_in, mp_buffer_info_t *bufinfo, int flags);
+mp_int_t mp_obj_str_get_buffer(mp_obj_t self_in, mp_buffer_info_t *bufinfo, mp_uint_t flags);
 
 const byte *str_index_to_ptr(const mp_obj_type_t *type, const byte *self_data, uint self_len,
                              mp_obj_t index, bool is_slice);

py/sequence.c

@@ -125,7 +125,7 @@ mp_obj_t mp_seq_extract_slice(mp_uint_t len, const mp_obj_t *seq, mp_bound_slice
 
 // Special-case comparison function for sequences of bytes
 // Don't pass MP_BINARY_OP_NOT_EQUAL here
-bool mp_seq_cmp_bytes(int op, const byte *data1, mp_uint_t len1, const byte *data2, mp_uint_t len2) {
+bool mp_seq_cmp_bytes(mp_uint_t op, const byte *data1, mp_uint_t len1, const byte *data2, mp_uint_t len2) {
     if (op == MP_BINARY_OP_EQUAL && len1 != len2) {
         return false;
     }
@@ -169,7 +169,7 @@ bool mp_seq_cmp_bytes(int op, const byte *data1, mp_uint_t len1, const byte *dat
 
 // Special-case comparison function for sequences of mp_obj_t
 // Don't pass MP_BINARY_OP_NOT_EQUAL here
-bool mp_seq_cmp_objs(int op, const mp_obj_t *items1, mp_uint_t len1, const mp_obj_t *items2, mp_uint_t len2) {
+bool mp_seq_cmp_objs(mp_uint_t op, const mp_obj_t *items1, mp_uint_t len1, const mp_obj_t *items2, mp_uint_t len2) {
     if (op == MP_BINARY_OP_EQUAL && len1 != len2) {
         return false;
     }