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Implement kwargs for builtin open() and _io.FileIO 

This makes open() and _io.FileIO() more CPython compliant.
The mode kwarg is fully iplemented.
The encoding kwarg is allowed but not implemented; mainly to allow
the tests to specify encoding for CPython, see #874
This commit is contained in:
stijn 2014-10-04 08:51:33 +02:00 committed by Paul Sokolovsky
parent 072bd07f17
commit 2fe4cf7761
8 changed files with 90 additions and 63 deletions
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4
bare-arm/main.c
View File

@ -70,10 +70,10 @@ mp_import_stat_t mp_import_stat(const char *path) {
return MP_IMPORT_STAT_NO_EXIST;
}
mp_obj_t mp_builtin_open(uint n_args, const mp_obj_t *args) {
mp_obj_t mp_builtin_open(uint n_args, const mp_obj_t *args, mp_map_t *kwargs) {
return mp_const_none;
}
MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(mp_builtin_open_obj, 1, 2, mp_builtin_open);
MP_DEFINE_CONST_FUN_OBJ_KW(mp_builtin_open_obj, 1, mp_builtin_open);
void nlr_jump_fail(void *val) {
}

2
py/builtin.h
View File

@ -25,7 +25,7 @@
*/
mp_obj_t mp_builtin___import__(mp_uint_t n_args, mp_obj_t *args);
mp_obj_t mp_builtin_open(mp_uint_t n_args, const mp_obj_t *args);
mp_obj_t mp_builtin_open(mp_uint_t n_args, const mp_obj_t *args, mp_map_t *kwargs);
MP_DECLARE_CONST_FUN_OBJ(mp_builtin___build_class___obj);
MP_DECLARE_CONST_FUN_OBJ(mp_builtin___import___obj);

3
py/qstrdefs.h
View File

@ -446,6 +446,9 @@ Q(StringIO)
Q(BytesIO)
Q(getvalue)
Q(file)
Q(mode)
Q(r)
Q(encoding)
#endif
#if MICROPY_PY_GC

4
qemu-arm/main.c
View File

@ -70,10 +70,10 @@ mp_import_stat_t mp_import_stat(const char *path) {
return MP_IMPORT_STAT_NO_EXIST;
}
mp_obj_t mp_builtin_open(uint n_args, const mp_obj_t *args) {
mp_obj_t mp_builtin_open(uint n_args, const mp_obj_t *args, mp_map_t *kwargs) {
return mp_const_none;
}
MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(mp_builtin_open_obj, 1, 2, mp_builtin_open);
MP_DEFINE_CONST_FUN_OBJ_KW(mp_builtin_open_obj, 1, mp_builtin_open);
void nlr_jump_fail(void *val) {
}

4
qemu-arm/test_main.c
View File

@ -78,10 +78,10 @@ mp_import_stat_t mp_import_stat(const char *path) {
return MP_IMPORT_STAT_NO_EXIST;
}
mp_obj_t mp_builtin_open(uint n_args, const mp_obj_t *args) {
mp_obj_t mp_builtin_open(uint n_args, const mp_obj_t *args, mp_map_t *kwargs) {
return mp_const_none;
}
MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(mp_builtin_open_obj, 1, 2, mp_builtin_open);
MP_DEFINE_CONST_FUN_OBJ_KW(mp_builtin_open_obj, 1, mp_builtin_open);
void nlr_jump_fail(void *val) {
}

89
stmhal/file.c
View File

@ -160,49 +160,51 @@ mp_obj_t file_obj_tell(mp_obj_t self_in) {
}
STATIC MP_DEFINE_CONST_FUN_OBJ_1(file_obj_tell_obj, file_obj_tell);
STATIC mp_obj_t file_obj_make_new(mp_obj_t type, mp_uint_t n_args, mp_uint_t n_kw, const mp_obj_t *args) {
mp_arg_check_num(n_args, n_kw, 1, 2, false);
const char *fname = mp_obj_str_get_str(args[0]);
// Note: encoding is ignored for now; it's also not a valid kwarg for CPython's FileIO,
// but by adding it here we can use one single mp_arg_t array for open() and FileIO's constructor
STATIC const mp_arg_t file_open_args[] = {
{ MP_QSTR_file, MP_ARG_OBJ | MP_ARG_REQUIRED, {.u_obj = mp_const_none} },
{ MP_QSTR_mode, MP_ARG_OBJ, {.u_obj = MP_OBJ_NEW_QSTR(MP_QSTR_r)} },
{ MP_QSTR_encoding, MP_ARG_OBJ | MP_ARG_KW_ONLY, {.u_obj = mp_const_none} },
};
#define FILE_OPEN_NUM_ARGS MP_ARRAY_SIZE(file_open_args)
STATIC mp_obj_t file_open(mp_obj_t type, mp_arg_val_t *args) {
int mode = 0;
if (n_args == 1) {
mode = FA_READ;
} else {
const char *mode_s = mp_obj_str_get_str(args[1]);
// TODO make sure only one of r, w, x, a, and b, t are specified
while (*mode_s) {
switch (*mode_s++) {
case 'r':
mode |= FA_READ;
break;
case 'w':
mode |= FA_WRITE | FA_CREATE_ALWAYS;
break;
case 'x':
mode |= FA_WRITE | FA_CREATE_NEW;
break;
case 'a':
mode |= FA_WRITE | FA_OPEN_ALWAYS;
break;
case '+':
mode |= FA_READ | FA_WRITE;
break;
#if MICROPY_PY_IO_FILEIO
case 'b':
type = (mp_obj_t)&mp_type_fileio;
break;
#endif
case 't':
type = (mp_obj_t)&mp_type_textio;
break;
}
const char *mode_s = mp_obj_str_get_str(args[1].u_obj);
// TODO make sure only one of r, w, x, a, and b, t are specified
while (*mode_s) {
switch (*mode_s++) {
case 'r':
mode |= FA_READ;
break;
case 'w':
mode |= FA_WRITE | FA_CREATE_ALWAYS;
break;
case 'x':
mode |= FA_WRITE | FA_CREATE_NEW;
break;
case 'a':
mode |= FA_WRITE | FA_OPEN_ALWAYS;
break;
case '+':
mode |= FA_READ | FA_WRITE;
break;
#if MICROPY_PY_IO_FILEIO
case 'b':
type = (mp_obj_t)&mp_type_fileio;
break;
#endif
case 't':
type = (mp_obj_t)&mp_type_textio;
break;
}
}
pyb_file_obj_t *o = m_new_obj_with_finaliser(pyb_file_obj_t);
o->base.type = type;
const char *fname = mp_obj_str_get_str(args[0].u_obj);
FRESULT res = f_open(&o->fp, fname, mode);
if (res != FR_OK) {
m_del_obj(pyb_file_obj_t, o);
@ -217,6 +219,12 @@ STATIC mp_obj_t file_obj_make_new(mp_obj_t type, mp_uint_t n_args, mp_uint_t n_k
return o;
}
STATIC mp_obj_t file_obj_make_new(mp_obj_t type_in, mp_uint_t n_args, mp_uint_t n_kw, const mp_obj_t *args) {
mp_arg_val_t arg_vals[FILE_OPEN_NUM_ARGS];
mp_arg_parse_all_kw_array(n_args, n_kw, args, FILE_OPEN_NUM_ARGS, file_open_args, arg_vals);
return file_open(type_in, arg_vals);
}
// TODO gc hook to close the file if not already closed
STATIC const mp_map_elem_t rawfile_locals_dict_table[] = {
@ -273,9 +281,10 @@ const mp_obj_type_t mp_type_textio = {
};
// Factory function for I/O stream classes
STATIC mp_obj_t pyb_io_open(mp_uint_t n_args, const mp_obj_t *args) {
// TODO: analyze mode and buffering args and instantiate appropriate type
return file_obj_make_new((mp_obj_t)&mp_type_textio, n_args, 0, args);
mp_obj_t mp_builtin_open(mp_uint_t n_args, const mp_obj_t *args, mp_map_t *kwargs) {
// TODO: analyze buffering args and instantiate appropriate type
mp_arg_val_t arg_vals[FILE_OPEN_NUM_ARGS];
mp_arg_parse_all(n_args, args, kwargs, FILE_OPEN_NUM_ARGS, file_open_args, arg_vals);
return file_open((mp_obj_t)&mp_type_textio, arg_vals);
}
MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(mp_builtin_open_obj, 1, 2, pyb_io_open);
MP_DEFINE_CONST_FUN_OBJ_KW(mp_builtin_open_obj, 1, mp_builtin_open);

43
unix/file.c
View File

@ -118,16 +118,19 @@ STATIC mp_obj_t fdfile_fileno(mp_obj_t self_in) {
}
STATIC MP_DEFINE_CONST_FUN_OBJ_1(fdfile_fileno_obj, fdfile_fileno);
STATIC mp_obj_t fdfile_make_new(mp_obj_t type_in, mp_uint_t n_args, mp_uint_t n_kw, const mp_obj_t *args) {
// Note: encoding is ignored for now; it's also not a valid kwarg for CPython's FileIO,
// but by adding it here we can use one single mp_arg_t array for open() and FileIO's constructor
STATIC const mp_arg_t file_open_args[] = {
{ MP_QSTR_file, MP_ARG_OBJ | MP_ARG_REQUIRED, {.u_obj = mp_const_none} },
{ MP_QSTR_mode, MP_ARG_OBJ, {.u_obj = MP_OBJ_NEW_QSTR(MP_QSTR_r)} },
{ MP_QSTR_encoding, MP_ARG_OBJ | MP_ARG_KW_ONLY, {.u_obj = mp_const_none} },
};
#define FILE_OPEN_NUM_ARGS MP_ARRAY_SIZE(file_open_args)
STATIC mp_obj_t fdfile_open(mp_obj_t type_in, mp_arg_val_t *args) {
mp_obj_fdfile_t *o = m_new_obj(mp_obj_fdfile_t);
mp_const_obj_t type = type_in;
const char *mode_s;
if (n_args > 1) {
mode_s = mp_obj_str_get_str(args[1]);
} else {
mode_s = "r";
}
const char *mode_s = mp_obj_str_get_str(args[1].u_obj);
int mode = 0;
while (*mode_s) {
@ -159,12 +162,14 @@ STATIC mp_obj_t fdfile_make_new(mp_obj_t type_in, mp_uint_t n_args, mp_uint_t n_
o->base.type = type;
if (MP_OBJ_IS_SMALL_INT(args[0])) {
o->fd = MP_OBJ_SMALL_INT_VALUE(args[0]);
mp_obj_t fid = args[0].u_obj;
if (MP_OBJ_IS_SMALL_INT(fid)) {
o->fd = MP_OBJ_SMALL_INT_VALUE(fid);
return o;
}
const char *fname = mp_obj_str_get_str(args[0]);
const char *fname = mp_obj_str_get_str(fid);
int fd = open(fname, mode, 0644);
if (fd == -1) {
nlr_raise(mp_obj_new_exception_arg1(&mp_type_OSError, MP_OBJ_NEW_SMALL_INT(errno)));
@ -173,6 +178,12 @@ STATIC mp_obj_t fdfile_make_new(mp_obj_t type_in, mp_uint_t n_args, mp_uint_t n_
return o;
}
STATIC mp_obj_t fdfile_make_new(mp_obj_t type_in, mp_uint_t n_args, mp_uint_t n_kw, const mp_obj_t *args) {
mp_arg_val_t arg_vals[FILE_OPEN_NUM_ARGS];
mp_arg_parse_all_kw_array(n_args, n_kw, args, FILE_OPEN_NUM_ARGS, file_open_args, arg_vals);
return fdfile_open(type_in, arg_vals);
}
STATIC const mp_map_elem_t rawfile_locals_dict_table[] = {
{ MP_OBJ_NEW_QSTR(MP_QSTR_fileno), (mp_obj_t)&fdfile_fileno_obj },
{ MP_OBJ_NEW_QSTR(MP_QSTR_read), (mp_obj_t)&mp_stream_read_obj },
@ -225,11 +236,13 @@ const mp_obj_type_t mp_type_textio = {
};
// Factory function for I/O stream classes
mp_obj_t mp_builtin_open(mp_uint_t n_args, const mp_obj_t *args) {
// TODO: analyze mode and buffering args and instantiate appropriate type
return fdfile_make_new((mp_obj_t)&mp_type_textio, n_args, 0, args);
mp_obj_t mp_builtin_open(mp_uint_t n_args, const mp_obj_t *args, mp_map_t *kwargs) {
// TODO: analyze buffering args and instantiate appropriate type
mp_arg_val_t arg_vals[FILE_OPEN_NUM_ARGS];
mp_arg_parse_all(n_args, args, kwargs, FILE_OPEN_NUM_ARGS, file_open_args, arg_vals);
return fdfile_open((mp_obj_t)&mp_type_textio, arg_vals);
}
MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(mp_builtin_open_obj, 1, 2, mp_builtin_open);
MP_DEFINE_CONST_FUN_OBJ_KW(mp_builtin_open_obj, 1, mp_builtin_open);
const mp_obj_fdfile_t mp_sys_stdin_obj = { .base = {&mp_type_textio}, .fd = STDIN_FILENO };
const mp_obj_fdfile_t mp_sys_stdout_obj = { .base = {&mp_type_textio}, .fd = STDOUT_FILENO };

4
unix/modsocket.c
View File

@ -257,7 +257,9 @@ STATIC mp_obj_t socket_makefile(mp_uint_t n_args, const mp_obj_t *args) {
mp_obj_t *new_args = alloca(n_args * sizeof(mp_obj_t));
memcpy(new_args + 1, args + 1, (n_args - 1) * sizeof(mp_obj_t));
new_args[0] = MP_OBJ_NEW_SMALL_INT(self->fd);
return mp_builtin_open(n_args, new_args);
mp_map_t kwargs;
mp_map_init(&kwargs, 0);
return mp_builtin_open(n_args, new_args, &kwargs);
}
STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(socket_makefile_obj, 1, 3, socket_makefile);