py/objnamedtuple: Use size_t where appropriate, instead of mp_uint_t.

py/objnamedtuple.c

@@ -36,7 +36,7 @@
 
 typedef struct _mp_obj_namedtuple_type_t {
     mp_obj_type_t base;
-    mp_uint_t n_fields;
+    size_t n_fields;
     qstr fields[];
 } mp_obj_namedtuple_type_t;
 
@@ -44,13 +44,13 @@ typedef struct _mp_obj_namedtuple_t {
     mp_obj_tuple_t tuple;
 } mp_obj_namedtuple_t;
 
-STATIC mp_uint_t namedtuple_find_field(const mp_obj_namedtuple_type_t *type, qstr name) {
-    for (mp_uint_t i = 0; i < type->n_fields; i++) {
+STATIC size_t namedtuple_find_field(const mp_obj_namedtuple_type_t *type, qstr name) {
+    for (size_t i = 0; i < type->n_fields; i++) {
         if (type->fields[i] == name) {
             return i;
         }
     }
-    return -1;
+    return (size_t)-1;
 }
 
 STATIC void namedtuple_print(const mp_print_t *print, mp_obj_t o_in, mp_print_kind_t kind) {
@@ -65,8 +65,8 @@ STATIC void namedtuple_attr(mp_obj_t self_in, qstr attr, mp_obj_t *dest) {
     if (dest[0] == MP_OBJ_NULL) {
         // load attribute
         mp_obj_namedtuple_t *self = MP_OBJ_TO_PTR(self_in);
-        int id = namedtuple_find_field((mp_obj_namedtuple_type_t*)self->tuple.base.type, attr);
-        if (id == -1) {
+        size_t id = namedtuple_find_field((mp_obj_namedtuple_type_t*)self->tuple.base.type, attr);
+        if (id == (size_t)-1) {
             return;
         }
         dest[0] = self->tuple.items[id];
@@ -102,14 +102,14 @@ STATIC mp_obj_t namedtuple_make_new(const mp_obj_type_t *type_in, size_t n_args,
         arg_objects = alloca(alloc_size);
         memset(arg_objects, 0, alloc_size);
 
-        for (mp_uint_t i = 0; i < n_args; i++) {
+        for (size_t i = 0; i < n_args; i++) {
             arg_objects[i] = args[i];
         }
 
-        for (mp_uint_t i = n_args; i < n_args + 2 * n_kw; i += 2) {
+        for (size_t i = n_args; i < n_args + 2 * n_kw; i += 2) {
             qstr kw = mp_obj_str_get_qstr(args[i]);
-            int id = namedtuple_find_field(type, kw);
-            if (id == -1) {
+            size_t id = namedtuple_find_field(type, kw);
+            if (id == (size_t)-1) {
                 if (MICROPY_ERROR_REPORTING == MICROPY_ERROR_REPORTING_TERSE) {
                     mp_arg_error_terse_mismatch();
                 } else {
@@ -136,7 +136,7 @@ STATIC mp_obj_t namedtuple_make_new(const mp_obj_type_t *type_in, size_t n_args,
 
 STATIC const mp_rom_obj_tuple_t namedtuple_base_tuple = {{&mp_type_tuple}, 1, {MP_ROM_PTR(&mp_type_tuple)}};
 
-STATIC mp_obj_t mp_obj_new_namedtuple_type(qstr name, mp_uint_t n_fields, mp_obj_t *fields) {
+STATIC mp_obj_t mp_obj_new_namedtuple_type(qstr name, size_t n_fields, mp_obj_t *fields) {
     mp_obj_namedtuple_type_t *o = m_new_obj_var(mp_obj_namedtuple_type_t, qstr, n_fields);
     memset(&o->base, 0, sizeof(o->base));
     o->base.base.type = &mp_type_type;
@@ -150,7 +150,7 @@ STATIC mp_obj_t mp_obj_new_namedtuple_type(qstr name, mp_uint_t n_fields, mp_obj
     o->base.getiter = mp_obj_tuple_getiter;
     o->base.bases_tuple = (mp_obj_tuple_t*)(mp_rom_obj_tuple_t*)&namedtuple_base_tuple;
     o->n_fields = n_fields;
-    for (mp_uint_t i = 0; i < n_fields; i++) {
+    for (size_t i = 0; i < n_fields; i++) {
         o->fields[i] = mp_obj_str_get_qstr(fields[i]);
     }
     return MP_OBJ_FROM_PTR(o);