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traceback module refinements

This commit is contained in:
microDev 2021-08-05 19:19:19 +05:30
parent fb0f2583db
commit 870f26bfc4
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GPG Key ID: 2C0867BE60967730
3 changed files with 140 additions and 58 deletions
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68
shared-bindings/traceback/__init__.c
View File

@ -27,6 +27,8 @@
#include "py/stream.h"
#include "py/runtime.h"
#include "shared-module/traceback/__init__.h"
//| """Traceback Module
//|
//| This module provides a standard interface to print stack traces of programs.
@ -50,7 +52,7 @@
//| Otherwise, print the last ``abs(limit)`` entries. If limit is omitted or None, all entries are printed.
//| :param io.FileIO file: If file is omitted or `None`, the output goes to `sys.stderr`; otherwise it should be an open
//| file or file-like object to receive the output.
//| :param bool chain: If `True` then chained exceptions will be printed.
//| :param bool chain: If `True` then chained exceptions will be printed (note: not yet implemented).
//|
//| """
//| ...
@ -69,10 +71,10 @@ STATIC mp_obj_t traceback_print_exception(size_t n_args, const mp_obj_t *pos_arg
mp_arg_val_t args[MP_ARRAY_SIZE(allowed_args)];
mp_arg_parse_all(n_args, pos_args, kw_args, MP_ARRAY_SIZE(allowed_args), allowed_args, args);
mp_obj_t exc = args[ARG_value].u_obj;
if (!mp_obj_is_exception_instance(exc)) {
if (!mp_obj_is_exception_instance(args[ARG_value].u_obj)) {
mp_raise_TypeError(translate("invalid exception"));
}
mp_obj_exception_t exc = *(mp_obj_exception_t *)MP_OBJ_TO_PTR(args[ARG_value].u_obj);
mp_print_t print = mp_plat_print;
if (args[ARG_file].u_obj != mp_const_none) {
@ -91,67 +93,19 @@ STATIC mp_obj_t traceback_print_exception(size_t n_args, const mp_obj_t *pos_arg
if (!mp_obj_get_int_maybe(args[ARG_limit].u_obj, &limit)) {
mp_raise_TypeError(translate("limit should be an int"));
}
print_tb = !(limit == 0);
print_tb = (limit != 0);
}
if (args[ARG_tb].u_obj != mp_const_none && print_tb) {
if (!mp_obj_is_type(args[ARG_tb].u_obj, &mp_type_traceback)) {
mp_raise_TypeError(translate("invalid traceback"));
}
mp_obj_traceback_t *tb = MP_OBJ_TO_PTR(args[ARG_tb].u_obj);
size_t n = (tb->data) ? tb->len : 0;
size_t *values = (tb->data) ? tb->data : NULL;
if (n > 0) {
assert(n % 3 == 0);
// Decompress the format strings
const compressed_string_t *traceback = MP_ERROR_TEXT("Traceback (most recent call last):\n");
char decompressed[decompress_length(traceback)];
decompress(traceback, decompressed);
#if MICROPY_ENABLE_SOURCE_LINE
const compressed_string_t *frame = MP_ERROR_TEXT(" File \"%q\", line %d");
#else
const compressed_string_t *frame = MP_ERROR_TEXT(" File \"%q\"");
#endif
char decompressed_frame[decompress_length(frame)];
decompress(frame, decompressed_frame);
const compressed_string_t *block_fmt = MP_ERROR_TEXT(", in %q\n");
char decompressed_block[decompress_length(block_fmt)];
decompress(block_fmt, decompressed_block);
// Set traceback formatting
// Default: Print full traceback
int i = n - 3, j;
if (limit > 0) {
// Print upto limit traceback
// from caller's frame
limit = n - (limit * 3);
} else if (limit < 0) {
// Print upto limit traceback
// from last
i = 0, limit = 3 + (limit * 3);
}
// Print the traceback
mp_print_str(&print, decompressed);
for (; i >= limit; i -= 3) {
j = (i < 0) ? -i : i;
#if MICROPY_ENABLE_SOURCE_LINE
mp_printf(&print, decompressed_frame, values[j], (int)values[j + 1]);
#else
mp_printf(&print, decompressed_frame, values[j]);
#endif
// The block name can be NULL if it's unknown
qstr block = values[j + 2];
if (block == MP_QSTRnull) {
mp_print_str(&print, "\n");
} else {
mp_printf(&print, decompressed_block, block);
}
}
}
exc.traceback = MP_OBJ_TO_PTR(args[ARG_tb].u_obj);
} else {
exc.traceback = NULL;
}
mp_obj_print_helper(&print, exc, PRINT_EXC);
mp_print_str(&print, "\n");
shared_module_traceback_print_exception(&exc, &print, limit);
return mp_const_none;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_KW(traceback_print_exception_obj, 3, traceback_print_exception);

94
shared-module/traceback/__init__.c
View File

@ -1 +1,93 @@
// empty file
/*
* This file is part of the Micro Python project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2021 microDev
*
* 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 "shared-module/traceback/__init__.h"
void shared_module_traceback_print_exception(mp_obj_exception_t *exc, mp_print_t *print, mp_int_t limit) {
// Print traceback
if (exc->traceback != NULL) {
size_t n = exc->traceback->len;
size_t *values = exc->traceback->data;
if (n > 0) {
assert(n % 3 == 0);
// Decompress the format strings
const compressed_string_t *traceback = MP_ERROR_TEXT("Traceback (most recent call last):\n");
char decompressed[decompress_length(traceback)];
decompress(traceback, decompressed);
#if MICROPY_ENABLE_SOURCE_LINE
const compressed_string_t *frame = MP_ERROR_TEXT(" File \"%q\", line %d");
#else
const compressed_string_t *frame = MP_ERROR_TEXT(" File \"%q\"");
#endif
char decompressed_frame[decompress_length(frame)];
decompress(frame, decompressed_frame);
const compressed_string_t *block_fmt = MP_ERROR_TEXT(", in %q\n");
char decompressed_block[decompress_length(block_fmt)];
decompress(block_fmt, decompressed_block);
// Set traceback formatting
// Default: Print full traceback
limit = limit * 3;
mp_int_t i = n - 3, j;
if (limit > 0) {
// Print upto limit traceback
// entries from caller's frame
if ((unsigned)limit > n) {
limit = n;
}
limit = n - limit;
} else if (limit < 0) {
// Print upto limit traceback
// entries from last
if ((unsigned)-limit > n) {
limit = -n;
}
i = 0, limit = limit + 3;
}
// Print the traceback
mp_print_str(print, decompressed);
for (; i >= limit; i -= 3) {
j = (i < 0) ? -i : i;
#if MICROPY_ENABLE_SOURCE_LINE
mp_printf(print, decompressed_frame, values[j], (int)values[j + 1]);
#else
mp_printf(print, decompressed_frame, values[j]);
#endif
// The block name can be NULL if it's unknown
qstr block = values[j + 2];
if (block == MP_QSTRnull) {
mp_print_str(print, "\n");
} else {
mp_printf(print, decompressed_block, block);
}
}
}
}
// Print exception
mp_obj_print_helper(print, exc, PRINT_EXC);
mp_print_str(print, "\n");
}

36
shared-module/traceback/__init__.h Normal file
View File

@ -0,0 +1,36 @@
/*
* This file is part of the Micro Python project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2021 microDev
*
* 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.
*/
#ifndef MICROPY_INCLUDED_SHARED_MODULE_TRACEBACK___INIT___H
#define MICROPY_INCLUDED_SHARED_MODULE_TRACEBACK___INIT___H
#include "py/objexcept.h"
#include "py/objtraceback.h"
extern void shared_module_traceback_print_exception(mp_obj_exception_t *exc,
mp_print_t *print, mp_int_t limit);
#endif // MICROPY_INCLUDED_SHARED_MODULE_TRACEBACK___INIT___H