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/*
* This file is part of the MicroPython project, http://micropython.org/
*
* The MIT License (MIT)
*
* 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
<stdint.h>
#include
<stdio.h>
#include
<stdarg.h>
#include
<assert.h>
#include
"py/nlr.h"
#include
"py/obj.h"
#include
"py/objtype.h"
#include
"py/objint.h"
#include
"py/objstr.h"
#include
"py/runtime0.h"
#include
"py/runtime.h"
#include
"py/stackctrl.h"
#include
"py/stream.h"
// for mp_obj_print
mp_obj_type_t
*
mp_obj_get_type
(
mp_const_obj_t
o_in
) {
if
(
MP_OBJ_IS_SMALL_INT
(
o_in
)) {
return
(
mp_obj_type_t
*
)
&
mp_type_int
;
}
else
if
(
MP_OBJ_IS_QSTR
(
o_in
)) {
return
(
mp_obj_type_t
*
)
&
mp_type_str
;
#if
MICROPY_PY_BUILTINS_FLOAT
}
else
if
(
mp_obj_is_float
(
o_in
)) {
return
(
mp_obj_type_t
*
)
&
mp_type_float
;
#endif
}
else
{
const
mp_obj_base_t
*
o
=
MP_OBJ_TO_PTR
(
o_in
);
return
(
mp_obj_type_t
*
)
o
->
type
;
}
}
const
char
*
mp_obj_get_type_str
(
mp_const_obj_t
o_in
) {
return
qstr_str
(
mp_obj_get_type
(
o_in
)
->
name
);
}
void
mp_obj_print_helper
(
const
mp_print_t
*
print
,
mp_obj_t
o_in
,
mp_print_kind_t
kind
) {
// There can be data structures nested too deep, or just recursive
MP_STACK_CHECK
();
#ifndef
NDEBUG
if
(
o_in
==
MP_OBJ_NULL
) {
mp_print_str
(
print
,
"(nil)"
);
return
;
}
#endif
mp_obj_type_t
*
type
=
mp_obj_get_type
(
o_in
);
if
(
type
->
print
!=
NULL
) {
type
->
print
((
mp_print_t
*
)
print
,
o_in
,
kind
);
}
else
{
mp_printf
(
print
,
"<%q>"
,
type
->
name
);
}
}
void
mp_obj_print
(
mp_obj_t
o_in
,
mp_print_kind_t
kind
) {
mp_obj_print_helper
(
MP_PYTHON_PRINTER
,
o_in
,
kind
);
}
// helper function to print an exception with traceback
void
mp_obj_print_exception
(
const
mp_print_t
*
print
,
mp_obj_t
exc
) {
if
(
mp_obj_is_exception_instance
(
exc
)) {
size_t
n
,
*
values
;
mp_obj_exception_get_traceback
(
exc
,
&
n
,
&
values
);
if
(
n
>
0
) {
assert
(
n
%
3
==
0
);
mp_print_str
(
print
,
"Traceback (most recent call last):\n"
);
for
(
int
i
=
n
-
3
;
i
>=
0
;
i
-=
3
) {
#if
MICROPY_ENABLE_SOURCE_LINE
mp_printf
(
print
,
" File \"%q\", line %d"
,
values
[
i
], (
int
)
values
[
i
+
1
]);
#else
mp_printf
(
print
,
" File \"%q\""
,
values
[
i
]);
#endif
// the block name can be NULL if it's unknown
qstr
block
=
values
[
i
+
2
];
if
(
block
==
MP_QSTR_NULL
) {
mp_print_str
(
print
,
"\n"
);
}
else
{
mp_printf
(
print
,
", in %q\n"
,
block
);
}
}
}
}
mp_obj_print_helper
(
print
,
exc
,
PRINT_EXC
);
mp_print_str
(
print
,
"\n"
);
}
bool
mp_obj_is_true
(
mp_obj_t
arg
) {
if
(
arg
==
mp_const_false
) {
return
0
;
}
else
if
(
arg
==
mp_const_true
) {
return
1
;
}
else
if
(
arg
==
mp_const_none
) {
return
0
;
}
else
if
(
MP_OBJ_IS_SMALL_INT
(
arg
)) {
if
(
MP_OBJ_SMALL_INT_VALUE
(
arg
)
==
0
) {
return
0
;
}
else
{
return
1
;
}
}
else
{
mp_obj_type_t
*
type
=
mp_obj_get_type
(
arg
);
if
(
type
->
unary_op
!=
NULL
) {
mp_obj_t
result
=
type
->
unary_op
(
MP_UNARY_OP_BOOL
,
arg
);
if
(
result
!=
MP_OBJ_NULL
) {
return
result
==
mp_const_true
;
}
}
mp_obj_t
len
=
mp_obj_len_maybe
(
arg
);
if
(
len
!=
MP_OBJ_NULL
) {
// obj has a length, truth determined if len != 0
return
len
!=
MP_OBJ_NEW_SMALL_INT
(
0
);
}
else
{
// any other obj is true per Python semantics
return
1
;
}
}
}
bool
mp_obj_is_callable
(
mp_obj_t
o_in
) {
mp_call_fun_t
call
=
mp_obj_get_type
(
o_in
)
->
call
;
if
(
call
!=
mp_obj_instance_call
) {
return
call
!=
NULL
;
}
return
mp_obj_instance_is_callable
(
o_in
);
}
// This function implements the '==' operator (and so the inverse of '!=').
//
// From the Python language reference:
// (https://docs.python.org/3/reference/expressions.html#not-in)
// "The objects need not have the same type. If both are numbers, they are converted
// to a common type. Otherwise, the == and != operators always consider objects of
// different types to be unequal."
//
// This means that False==0 and True==1 are true expressions.
//
// Furthermore, from the v3.4.2 code for object.c: "Practical amendments: If rich
// comparison returns NotImplemented, == and != are decided by comparing the object
// pointer."
bool
mp_obj_equal
(
mp_obj_t
o1
,
mp_obj_t
o2
) {
if
(
o1
==
o2
) {
return
true;
}
if
(
o1
==
mp_const_none
||
o2
==
mp_const_none
) {
return
false;
}
// fast path for small ints
if
(
MP_OBJ_IS_SMALL_INT
(
o1
)) {
if
(
MP_OBJ_IS_SMALL_INT
(
o2
)) {
// both SMALL_INT, and not equal if we get here
return
false;
}
else
{
mp_obj_t
temp
=
o2
;
o2
=
o1
;
o1
=
temp
;
// o2 is now the SMALL_INT, o1 is not
// fall through to generic op
}
}
// fast path for strings
if
(
MP_OBJ_IS_STR
(
o1
)) {
if
(
MP_OBJ_IS_STR
(
o2
)) {
// both strings, use special function
return
mp_obj_str_equal
(
o1
,
o2
);
}
else
{
// a string is never equal to anything else
goto
str_cmp_err
;
}
}
else
if
(
MP_OBJ_IS_STR
(
o2
)) {
// o1 is not a string (else caught above), so the objects are not equal
str_cmp_err
:
#if
MICROPY_PY_STR_BYTES_CMP_WARN
if
(
MP_OBJ_IS_TYPE
(
o1
,
&
mp_type_bytes
)
||
MP_OBJ_IS_TYPE
(
o2
,
&
mp_type_bytes
)) {
mp_warning
(
"Comparison between bytes and str"
);
}
#endif
return
false;
}
// generic type, call binary_op(MP_BINARY_OP_EQUAL)
mp_obj_type_t
*
type
=
mp_obj_get_type
(
o1
);
if
(
type
->
binary_op
!=
NULL
) {
mp_obj_t
r
=
type
->
binary_op
(
MP_BINARY_OP_EQUAL
,
o1
,
o2
);
if
(
r
!=
MP_OBJ_NULL
) {
return
r
==
mp_const_true
? true : false;
}
}
// equality not implemented, and objects are not the same object, so
// they are defined as not equal
return
false;
}
mp_int_t
mp_obj_get_int
(
mp_const_obj_t
arg
) {
// This function essentially performs implicit type conversion to int
// Note that Python does NOT provide implicit type conversion from
// float to int in the core expression language, try some_list[1.0].
if
(
arg
==
mp_const_false
) {
return
0
;
}
else
if
(
arg
==
mp_const_true
) {
return
1
;
}
else
if
(
MP_OBJ_IS_SMALL_INT
(
arg
)) {
return
MP_OBJ_SMALL_INT_VALUE
(
arg
);
}
else
if
(
MP_OBJ_IS_TYPE
(
arg
,
&
mp_type_int
)) {
return
mp_obj_int_get_checked
(
arg
);
}
else
{
if
(
MICROPY_ERROR_REPORTING
==
MICROPY_ERROR_REPORTING_TERSE
) {
mp_raise_TypeError
(
"can't convert to int"
);
}
else
{
mp_raise_TypeError_varg
(
"can't convert %s to int"
,
mp_obj_get_type_str
(
arg
));
}
}
}
mp_int_t
mp_obj_get_int_truncated
(
mp_const_obj_t
arg
) {
if
(
MP_OBJ_IS_INT
(
arg
)) {
return
mp_obj_int_get_truncated
(
arg
);
}
else
{
return
mp_obj_get_int
(
arg
);
}
}
// returns false if arg is not of integral type
// returns true and sets *value if it is of integral type
// can throw OverflowError if arg is of integral type, but doesn't fit in a mp_int_t
bool
mp_obj_get_int_maybe
(
mp_const_obj_t
arg
,
mp_int_t
*
value
) {
if
(
arg
==
mp_const_false
) {
*
value
=
0
;
}
else
if
(
arg
==
mp_const_true
) {
*
value
=
1
;
}
else
if
(
MP_OBJ_IS_SMALL_INT
(
arg
)) {
*
value
=
MP_OBJ_SMALL_INT_VALUE
(
arg
);
}
else
if
(
MP_OBJ_IS_TYPE
(
arg
,
&
mp_type_int
)) {
*
value
=
mp_obj_int_get_checked
(
arg
);
}
else
{
return
false;
}
return
true;
}
#if
MICROPY_PY_BUILTINS_FLOAT
mp_float_t
mp_obj_get_float
(
mp_obj_t
arg
) {
if
(
arg
==
mp_const_false
) {
return
0
;
}
else
if
(
arg
==
mp_const_true
) {
return
1
;
}
else
if
(
MP_OBJ_IS_SMALL_INT
(
arg
)) {
return
MP_OBJ_SMALL_INT_VALUE
(
arg
);
#if
MICROPY_LONGINT_IMPL
!=
MICROPY_LONGINT_IMPL_NONE
}
else
if
(
MP_OBJ_IS_TYPE
(
arg
,
&
mp_type_int
)) {
return
mp_obj_int_as_float_impl
(
arg
);
#endif
}
else
if
(
mp_obj_is_float
(
arg
)) {
return
mp_obj_float_get
(
arg
);
}
else
{
if
(
MICROPY_ERROR_REPORTING
==
MICROPY_ERROR_REPORTING_TERSE
) {
mp_raise_TypeError
(
"can't convert to float"
);
}
else
{
mp_raise_TypeError_varg
(
"can't convert %s to float"
,
mp_obj_get_type_str
(
arg
));
}
}
}
#if
MICROPY_PY_BUILTINS_COMPLEX
void
mp_obj_get_complex
(
mp_obj_t
arg
,
mp_float_t
*
real
,
mp_float_t
*
imag
) {
if
(
arg
==
mp_const_false
) {
*
real
=
0
;
*
imag
=
0
;
}
else
if
(
arg
==
mp_const_true
) {
*
real
=
1
;
*
imag
=
0
;
}
else
if
(
MP_OBJ_IS_SMALL_INT
(
arg
)) {
*
real
=
MP_OBJ_SMALL_INT_VALUE
(
arg
);
*
imag
=
0
;
#if
MICROPY_LONGINT_IMPL
!=
MICROPY_LONGINT_IMPL_NONE
}
else
if
(
MP_OBJ_IS_TYPE
(
arg
,
&
mp_type_int
)) {
*
real
=
mp_obj_int_as_float_impl
(
arg
);
*
imag
=
0
;
#endif
}
else
if
(
mp_obj_is_float
(
arg
)) {
*
real
=
mp_obj_float_get
(
arg
);
*
imag
=
0
;
}
else
if
(
MP_OBJ_IS_TYPE
(
arg
,
&
mp_type_complex
)) {
mp_obj_complex_get
(
arg
,
real
,
imag
);
}
else
{
if
(
MICROPY_ERROR_REPORTING
==
MICROPY_ERROR_REPORTING_TERSE
) {
mp_raise_TypeError
(
"can't convert to complex"
);
}
else
{
mp_raise_TypeError_varg
(
"can't convert %s to complex"
,
mp_obj_get_type_str
(
arg
));
}
}
}
#endif
#endif
// note: returned value in *items may point to the interior of a GC block
void
mp_obj_get_array
(
mp_obj_t
o
,
size_t
*
len
,
mp_obj_t
*
*
items
) {
if
(
MP_OBJ_IS_TYPE
(
o
,
&
mp_type_tuple
)) {
mp_obj_tuple_get
(
o
,
len
,
items
);
}
else
if
(
MP_OBJ_IS_TYPE
(
o
,
&
mp_type_list
)) {
mp_obj_list_get
(
o
,
len
,
items
);
}
else
{
if
(
MICROPY_ERROR_REPORTING
==
MICROPY_ERROR_REPORTING_TERSE
) {
mp_raise_TypeError
(
"expected tuple/list"
);
}
else
{
mp_raise_TypeError_varg
(
"object '%s' is not a tuple or list"
,
mp_obj_get_type_str
(
o
));
}
}
}
// note: returned value in *items may point to the interior of a GC block
void
mp_obj_get_array_fixed_n
(
mp_obj_t
o
,
size_t
len
,
mp_obj_t
*
*
items
) {
size_t
seq_len
;
mp_obj_get_array
(
o
,
&
seq_len
,
items
);
if
(
seq_len
!=
len
) {
if
(
MICROPY_ERROR_REPORTING
==
MICROPY_ERROR_REPORTING_TERSE
) {
mp_raise_ValueError
(
"tuple/list has wrong length"
);
}
else
{
mp_raise_ValueError_varg
(
"requested length %d but object has length %d"
,
(
int
)
len
, (
int
)
seq_len
);
}
}
}
// is_slice determines whether the index is a slice index
size_t
mp_get_index
(
const
mp_obj_type_t
*
type
,
size_t
len
,
mp_obj_t
index
,
bool
is_slice
) {
mp_int_t
i
;
if
(
MP_OBJ_IS_SMALL_INT
(
index
)) {
i
=
MP_OBJ_SMALL_INT_VALUE
(
index
);
}
else
if
(!
mp_obj_get_int_maybe
(
index
,
&
i
)) {
if
(
MICROPY_ERROR_REPORTING
==
MICROPY_ERROR_REPORTING_TERSE
) {
mp_raise_TypeError
(
"indices must be integers"
);
}
else
{
mp_raise_TypeError_varg
(
"%q indices must be integers, not %s"
,
type
->
name
,
mp_obj_get_type_str
(
index
));
}
}
if
(
i
<
0
) {
i
+=
len
;
}
if
(
is_slice
) {
if
(
i
<
0
) {
i
=
0
;
}
else
if
((
mp_uint_t
)
i
>
len
) {
i
=
len
;
}
}
else
{
if
(
i
<
0
||
(
mp_uint_t
)
i
>=
len
) {
if
(
MICROPY_ERROR_REPORTING
==
MICROPY_ERROR_REPORTING_TERSE
) {
mp_raise_IndexError
(
"index out of range"
);
}
else
{
mp_raise_msg_varg
(
&
mp_type_IndexError
,
"%q index out of range"
,
type
->
name
);
}
}
}
// By this point 0 <= i <= len and so fits in a size_t
return
(
size_t
)
i
;
}
mp_obj_t
mp_obj_id
(
mp_obj_t
o_in
) {
mp_int_t
id
=
(
mp_int_t
)
o_in
;
if
(!
MP_OBJ_IS_OBJ
(
o_in
)) {
return
mp_obj_new_int
(
id
);
}
else
if
(
id
>=
0
) {
// Many OSes and CPUs have affinity for putting "user" memories
// into low half of address space, and "system" into upper half.
// We're going to take advantage of that and return small int
// (signed) for such "user" addresses.
return
MP_OBJ_NEW_SMALL_INT
(
id
);
}
else
{
// If that didn't work, well, let's return long int, just as
// a (big) positive value, so it will never clash with the range
// of small int returned in previous case.
return
mp_obj_new_int_from_uint
((
mp_uint_t
)
id
);
}
}
// will raise a TypeError if object has no length
mp_obj_t
mp_obj_len
(
mp_obj_t
o_in
) {
mp_obj_t
len
=
mp_obj_len_maybe
(
o_in
);
if
(
len
==
MP_OBJ_NULL
) {
if
(
MICROPY_ERROR_REPORTING
==
MICROPY_ERROR_REPORTING_TERSE
) {
mp_raise_TypeError
(
"object has no len"
);
}
else
{
mp_raise_TypeError_varg
(
"object of type '%s' has no len()"
,
mp_obj_get_type_str
(
o_in
));
}
}
else
{
return
len
;
}
}
// may return MP_OBJ_NULL
mp_obj_t
mp_obj_len_maybe
(
mp_obj_t
o_in
) {
if
(
#if
!
MICROPY_PY_BUILTINS_STR_UNICODE
// It's simple - unicode is slow, non-unicode is fast
MP_OBJ_IS_STR
(
o_in
)
||
#endif
MP_OBJ_IS_TYPE
(
o_in
,
&
mp_type_bytes
)) {
GET_STR_LEN
(
o_in
,
l
);
return
MP_OBJ_NEW_SMALL_INT
(
l
);
}
else
{
mp_obj_type_t
*
type
=
mp_obj_get_type
(
o_in
);
if
(
type
->
unary_op
!=
NULL
) {
return
type
->
unary_op
(
MP_UNARY_OP_LEN
,
o_in
);
}
else
{
return
MP_OBJ_NULL
;
}
}
}
mp_obj_t
mp_obj_subscr
(
mp_obj_t
base
,
mp_obj_t
index
,
mp_obj_t
value
) {
mp_obj_type_t
*
type
=
mp_obj_get_type
(
base
);
if
(
type
->
subscr
!=
NULL
) {
mp_obj_t
ret
=
type
->
subscr
(
base
,
index
,
value
);
if
(
ret
!=
MP_OBJ_NULL
) {
return
ret
;
}
// TODO: call base classes here?
}
if
(
value
==
MP_OBJ_NULL
) {
if
(
MICROPY_ERROR_REPORTING
==
MICROPY_ERROR_REPORTING_TERSE
) {
mp_raise_TypeError
(
"object does not support item deletion"
);
}
else
{
mp_raise_TypeError_varg
(
"'%s' object does not support item deletion"
,
mp_obj_get_type_str
(
base
));
}
}
else
if
(
value
==
MP_OBJ_SENTINEL
) {
if
(
MICROPY_ERROR_REPORTING
==
MICROPY_ERROR_REPORTING_TERSE
) {
mp_raise_TypeError
(
"object is not subscriptable"
);
}
else
{
mp_raise_TypeError_varg
(
"'%s' object is not subscriptable"
,
mp_obj_get_type_str
(
base
));
}
}
else
{
if
(
MICROPY_ERROR_REPORTING
==
MICROPY_ERROR_REPORTING_TERSE
) {
mp_raise_TypeError
(
"object does not support item assignment"
);
}
else
{
mp_raise_TypeError_varg
(
"'%s' object does not support item assignment"
,
mp_obj_get_type_str
(
base
));
}
}
}
// Return input argument. Useful as .getiter for objects which are
// their own iterators, etc.
mp_obj_t
mp_identity
(
mp_obj_t
self
) {
return
self
;
}
MP_DEFINE_CONST_FUN_OBJ_1
(
mp_identity_obj
,
mp_identity
);
mp_obj_t
mp_identity_getiter
(
mp_obj_t
self
,
mp_obj_iter_buf_t
*
iter_buf
) {
(
void
)
iter_buf
;
return
self
;
}
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;
}
int
ret
=
type
->
buffer_p
.
get_buffer
(
obj
,
bufinfo
,
flags
);
if
(
ret
!=
0
) {
return
false;
}
return
true;
}
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
)) {
mp_raise_TypeError
(
"object with buffer protocol required"
);
}
}
mp_obj_t
mp_generic_unary_op
(
mp_uint_t
op
,
mp_obj_t
o_in
) {
switch
(
op
) {
case
MP_UNARY_OP_HASH
:
return
MP_OBJ_NEW_SMALL_INT
((
mp_uint_t
)
o_in
);
default
:
return
MP_OBJ_NULL
;
// op not supported
}
}
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