Colin Hogben / micropython

Important changes to repositories hosted on mbed.com

Mbed hosted mercurial repositories are deprecated and are due to be permanently deleted in July 2026.

To keep a copy of this software download the repository Zip archive or clone locally using Mercurial.

It is also possible to export all your personal repositories from the account settings page.

Dependents:   micropython-repl

py/objexcept.c@2:c89e95946844, 2016-04-16 (annotated)

Committer:
Colin Hogben
Date:
Sat Apr 16 22:43:41 2016 +0100
Revision:
2:c89e95946844
Parent:
0:5868e8752d44 
py: update to upstream master

Who changed what in which revision?

UserRevisionLine numberNew contents of line
pythontech 0:5868e8752d44 1 /*
pythontech 0:5868e8752d44 2 * This file is part of the Micro Python project, http://micropython.org/
pythontech 0:5868e8752d44 3 *
pythontech 0:5868e8752d44 4 * The MIT License (MIT)
pythontech 0:5868e8752d44 5 *
pythontech 0:5868e8752d44 6 * Copyright (c) 2013, 2014 Damien P. George
pythontech 0:5868e8752d44 7 *
pythontech 0:5868e8752d44 8 * Permission is hereby granted, free of charge, to any person obtaining a copy
pythontech 0:5868e8752d44 9 * of this software and associated documentation files (the "Software"), to deal
pythontech 0:5868e8752d44 10 * in the Software without restriction, including without limitation the rights
pythontech 0:5868e8752d44 11 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
pythontech 0:5868e8752d44 12 * copies of the Software, and to permit persons to whom the Software is
pythontech 0:5868e8752d44 13 * furnished to do so, subject to the following conditions:
pythontech 0:5868e8752d44 14 *
pythontech 0:5868e8752d44 15 * The above copyright notice and this permission notice shall be included in
pythontech 0:5868e8752d44 16 * all copies or substantial portions of the Software.
pythontech 0:5868e8752d44 17 *
pythontech 0:5868e8752d44 18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
pythontech 0:5868e8752d44 19 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
pythontech 0:5868e8752d44 20 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
pythontech 0:5868e8752d44 21 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
pythontech 0:5868e8752d44 22 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
pythontech 0:5868e8752d44 23 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
pythontech 0:5868e8752d44 24 * THE SOFTWARE.
pythontech 0:5868e8752d44 25 */
pythontech 0:5868e8752d44 26
pythontech 0:5868e8752d44 27 #include <string.h>
pythontech 0:5868e8752d44 28 #include <stdarg.h>
pythontech 0:5868e8752d44 29 #include <assert.h>
pythontech 0:5868e8752d44 30 #include <stdio.h>
pythontech 0:5868e8752d44 31
pythontech 0:5868e8752d44 32 #include "py/mpstate.h"
pythontech 0:5868e8752d44 33 #include "py/objlist.h"
pythontech 0:5868e8752d44 34 #include "py/objstr.h"
pythontech 0:5868e8752d44 35 #include "py/objtuple.h"
pythontech 0:5868e8752d44 36 #include "py/objtype.h"
pythontech 0:5868e8752d44 37 #include "py/runtime.h"
pythontech 0:5868e8752d44 38 #include "py/gc.h"
pythontech 0:5868e8752d44 39
pythontech 0:5868e8752d44 40 // Instance of MemoryError exception - needed by mp_malloc_fail
pythontech 0:5868e8752d44 41 const mp_obj_exception_t mp_const_MemoryError_obj = {{&mp_type_MemoryError}, 0, 0, NULL, (mp_obj_tuple_t*)&mp_const_empty_tuple_obj};
pythontech 0:5868e8752d44 42
pythontech 0:5868e8752d44 43 // Optionally allocated buffer for storing the first argument of an exception
pythontech 0:5868e8752d44 44 // allocated when the heap is locked.
pythontech 0:5868e8752d44 45 #if MICROPY_ENABLE_EMERGENCY_EXCEPTION_BUF
pythontech 0:5868e8752d44 46 # if MICROPY_EMERGENCY_EXCEPTION_BUF_SIZE > 0
pythontech 0:5868e8752d44 47 #define mp_emergency_exception_buf_size MICROPY_EMERGENCY_EXCEPTION_BUF_SIZE
pythontech 0:5868e8752d44 48
pythontech 0:5868e8752d44 49 void mp_init_emergency_exception_buf(void) {
pythontech 0:5868e8752d44 50 // Nothing to do since the buffer was declared statically. We put this
pythontech 0:5868e8752d44 51 // definition here so that the calling code can call this function
pythontech 0:5868e8752d44 52 // regardless of how its configured (makes the calling code a bit cleaner).
pythontech 0:5868e8752d44 53 }
pythontech 0:5868e8752d44 54
pythontech 0:5868e8752d44 55 #else
pythontech 0:5868e8752d44 56 #define mp_emergency_exception_buf_size MP_STATE_VM(mp_emergency_exception_buf_size)
pythontech 0:5868e8752d44 57
pythontech 0:5868e8752d44 58 void mp_init_emergency_exception_buf(void) {
pythontech 0:5868e8752d44 59 mp_emergency_exception_buf_size = 0;
pythontech 0:5868e8752d44 60 MP_STATE_VM(mp_emergency_exception_buf) = NULL;
pythontech 0:5868e8752d44 61 }
pythontech 0:5868e8752d44 62
pythontech 0:5868e8752d44 63 mp_obj_t mp_alloc_emergency_exception_buf(mp_obj_t size_in) {
pythontech 0:5868e8752d44 64 mp_int_t size = mp_obj_get_int(size_in);
pythontech 0:5868e8752d44 65 void *buf = NULL;
pythontech 0:5868e8752d44 66 if (size > 0) {
pythontech 0:5868e8752d44 67 buf = m_new(byte, size);
pythontech 0:5868e8752d44 68 }
pythontech 0:5868e8752d44 69
pythontech 0:5868e8752d44 70 int old_size = mp_emergency_exception_buf_size;
pythontech 0:5868e8752d44 71 void *old_buf = MP_STATE_VM(mp_emergency_exception_buf);
pythontech 0:5868e8752d44 72
pythontech 0:5868e8752d44 73 // Update the 2 variables atomically so that an interrupt can't occur
pythontech 0:5868e8752d44 74 // between the assignments.
pythontech 0:5868e8752d44 75 mp_uint_t atomic_state = MICROPY_BEGIN_ATOMIC_SECTION();
pythontech 0:5868e8752d44 76 mp_emergency_exception_buf_size = size;
pythontech 0:5868e8752d44 77 MP_STATE_VM(mp_emergency_exception_buf) = buf;
pythontech 0:5868e8752d44 78 MICROPY_END_ATOMIC_SECTION(atomic_state);
pythontech 0:5868e8752d44 79
pythontech 0:5868e8752d44 80 if (old_buf != NULL) {
pythontech 0:5868e8752d44 81 m_del(byte, old_buf, old_size);
pythontech 0:5868e8752d44 82 }
pythontech 0:5868e8752d44 83 return mp_const_none;
pythontech 0:5868e8752d44 84 }
pythontech 0:5868e8752d44 85 #endif
pythontech 0:5868e8752d44 86 #endif // MICROPY_ENABLE_EMERGENCY_EXCEPTION_BUF
pythontech 0:5868e8752d44 87
pythontech 0:5868e8752d44 88 // Instance of GeneratorExit exception - needed by generator.close()
pythontech 0:5868e8752d44 89 // This would belong to objgenerator.c, but to keep mp_obj_exception_t
pythontech 0:5868e8752d44 90 // definition module-private so far, have it here.
pythontech 0:5868e8752d44 91 const mp_obj_exception_t mp_const_GeneratorExit_obj = {{&mp_type_GeneratorExit}, 0, 0, NULL, (mp_obj_tuple_t*)&mp_const_empty_tuple_obj};
pythontech 0:5868e8752d44 92
pythontech 0:5868e8752d44 93 STATIC void mp_obj_exception_print(const mp_print_t *print, mp_obj_t o_in, mp_print_kind_t kind) {
pythontech 0:5868e8752d44 94 mp_obj_exception_t *o = MP_OBJ_TO_PTR(o_in);
pythontech 0:5868e8752d44 95 mp_print_kind_t k = kind & ~PRINT_EXC_SUBCLASS;
pythontech 0:5868e8752d44 96 bool is_subclass = kind & PRINT_EXC_SUBCLASS;
pythontech 0:5868e8752d44 97 if (!is_subclass && (k == PRINT_REPR || k == PRINT_EXC)) {
pythontech 0:5868e8752d44 98 mp_print_str(print, qstr_str(o->base.type->name));
pythontech 0:5868e8752d44 99 }
pythontech 0:5868e8752d44 100
pythontech 0:5868e8752d44 101 if (k == PRINT_EXC) {
pythontech 0:5868e8752d44 102 mp_print_str(print, ": ");
pythontech 0:5868e8752d44 103 }
pythontech 0:5868e8752d44 104
pythontech 0:5868e8752d44 105 if (k == PRINT_STR || k == PRINT_EXC) {
pythontech 0:5868e8752d44 106 if (o->args == NULL || o->args->len == 0) {
pythontech 0:5868e8752d44 107 mp_print_str(print, "");
pythontech 0:5868e8752d44 108 return;
pythontech 0:5868e8752d44 109 } else if (o->args->len == 1) {
pythontech 0:5868e8752d44 110 mp_obj_print_helper(print, o->args->items[0], PRINT_STR);
pythontech 0:5868e8752d44 111 return;
pythontech 0:5868e8752d44 112 }
pythontech 0:5868e8752d44 113 }
pythontech 0:5868e8752d44 114 mp_obj_tuple_print(print, MP_OBJ_FROM_PTR(o->args), kind);
pythontech 0:5868e8752d44 115 }
pythontech 0:5868e8752d44 116
pythontech 0:5868e8752d44 117 mp_obj_t mp_obj_exception_make_new(const mp_obj_type_t *type, size_t n_args, size_t n_kw, const mp_obj_t *args) {
pythontech 0:5868e8752d44 118 mp_arg_check_num(n_args, n_kw, 0, MP_OBJ_FUN_ARGS_MAX, false);
pythontech 0:5868e8752d44 119 mp_obj_exception_t *o = m_new_obj_var_maybe(mp_obj_exception_t, mp_obj_t, 0);
pythontech 0:5868e8752d44 120 if (o == NULL) {
pythontech 0:5868e8752d44 121 // Couldn't allocate heap memory; use local data instead.
pythontech 0:5868e8752d44 122 o = &MP_STATE_VM(mp_emergency_exception_obj);
pythontech 0:5868e8752d44 123 // We can't store any args.
pythontech 0:5868e8752d44 124 o->args = (mp_obj_tuple_t*)&mp_const_empty_tuple_obj;
pythontech 0:5868e8752d44 125 } else {
pythontech 0:5868e8752d44 126 o->args = MP_OBJ_TO_PTR(mp_obj_new_tuple(n_args, args));
pythontech 0:5868e8752d44 127 }
pythontech 0:5868e8752d44 128 o->base.type = type;
pythontech 0:5868e8752d44 129 o->traceback_data = NULL;
pythontech 0:5868e8752d44 130 return MP_OBJ_FROM_PTR(o);
pythontech 0:5868e8752d44 131 }
pythontech 0:5868e8752d44 132
pythontech 0:5868e8752d44 133 // Get exception "value" - that is, first argument, or None
pythontech 0:5868e8752d44 134 mp_obj_t mp_obj_exception_get_value(mp_obj_t self_in) {
pythontech 0:5868e8752d44 135 mp_obj_exception_t *self = MP_OBJ_TO_PTR(self_in);
pythontech 0:5868e8752d44 136 if (self->args->len == 0) {
pythontech 0:5868e8752d44 137 return mp_const_none;
pythontech 0:5868e8752d44 138 } else {
pythontech 0:5868e8752d44 139 return self->args->items[0];
pythontech 0:5868e8752d44 140 }
pythontech 0:5868e8752d44 141 }
pythontech 0:5868e8752d44 142
pythontech 0:5868e8752d44 143 STATIC void exception_attr(mp_obj_t self_in, qstr attr, mp_obj_t *dest) {
pythontech 0:5868e8752d44 144 if (dest[0] != MP_OBJ_NULL) {
pythontech 0:5868e8752d44 145 // not load attribute
pythontech 0:5868e8752d44 146 return;
pythontech 0:5868e8752d44 147 }
pythontech 0:5868e8752d44 148 mp_obj_exception_t *self = MP_OBJ_TO_PTR(self_in);
pythontech 0:5868e8752d44 149 if (attr == MP_QSTR_args) {
pythontech 0:5868e8752d44 150 dest[0] = MP_OBJ_FROM_PTR(self->args);
pythontech 0:5868e8752d44 151 } else if (self->base.type == &mp_type_StopIteration && attr == MP_QSTR_value) {
pythontech 0:5868e8752d44 152 dest[0] = mp_obj_exception_get_value(self_in);
pythontech 0:5868e8752d44 153 }
pythontech 0:5868e8752d44 154 }
pythontech 0:5868e8752d44 155
pythontech 0:5868e8752d44 156 STATIC mp_obj_t exc___init__(size_t n_args, const mp_obj_t *args) {
pythontech 0:5868e8752d44 157 mp_obj_exception_t *self = MP_OBJ_TO_PTR(args[0]);
pythontech 0:5868e8752d44 158 mp_obj_t argst = mp_obj_new_tuple(n_args - 1, args + 1);
pythontech 0:5868e8752d44 159 self->args = MP_OBJ_TO_PTR(argst);
pythontech 0:5868e8752d44 160 return mp_const_none;
pythontech 0:5868e8752d44 161 }
pythontech 0:5868e8752d44 162 STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(exc___init___obj, 1, MP_OBJ_FUN_ARGS_MAX, exc___init__);
pythontech 0:5868e8752d44 163
pythontech 0:5868e8752d44 164 STATIC const mp_rom_map_elem_t exc_locals_dict_table[] = {
pythontech 0:5868e8752d44 165 { MP_ROM_QSTR(MP_QSTR___init__), MP_ROM_PTR(&exc___init___obj) },
pythontech 0:5868e8752d44 166 };
pythontech 0:5868e8752d44 167
pythontech 0:5868e8752d44 168 STATIC MP_DEFINE_CONST_DICT(exc_locals_dict, exc_locals_dict_table);
pythontech 0:5868e8752d44 169
pythontech 0:5868e8752d44 170 const mp_obj_type_t mp_type_BaseException = {
pythontech 0:5868e8752d44 171 { &mp_type_type },
pythontech 0:5868e8752d44 172 .name = MP_QSTR_BaseException,
pythontech 0:5868e8752d44 173 .print = mp_obj_exception_print,
pythontech 0:5868e8752d44 174 .make_new = mp_obj_exception_make_new,
pythontech 0:5868e8752d44 175 .attr = exception_attr,
pythontech 0:5868e8752d44 176 .locals_dict = (mp_obj_dict_t*)&exc_locals_dict,
pythontech 0:5868e8752d44 177 };
pythontech 0:5868e8752d44 178
pythontech 0:5868e8752d44 179 #define MP_DEFINE_EXCEPTION_BASE(base_name) \
pythontech 0:5868e8752d44 180 STATIC const mp_rom_obj_tuple_t mp_type_ ## base_name ## _base_tuple = {{&mp_type_tuple}, 1, {MP_ROM_PTR(&mp_type_ ## base_name)}};\
pythontech 0:5868e8752d44 181
pythontech 0:5868e8752d44 182 #define MP_DEFINE_EXCEPTION(exc_name, base_name) \
pythontech 0:5868e8752d44 183 const mp_obj_type_t mp_type_ ## exc_name = { \
pythontech 0:5868e8752d44 184 { &mp_type_type }, \
pythontech 0:5868e8752d44 185 .name = MP_QSTR_ ## exc_name, \
pythontech 0:5868e8752d44 186 .print = mp_obj_exception_print, \
pythontech 0:5868e8752d44 187 .make_new = mp_obj_exception_make_new, \
pythontech 0:5868e8752d44 188 .attr = exception_attr, \
pythontech 0:5868e8752d44 189 .bases_tuple = (mp_obj_tuple_t*)(mp_rom_obj_tuple_t*)&mp_type_ ## base_name ## _base_tuple, \
pythontech 0:5868e8752d44 190 };
pythontech 0:5868e8752d44 191
pythontech 0:5868e8752d44 192 // List of all exceptions, arranged as in the table at:
pythontech 0:5868e8752d44 193 // http://docs.python.org/3/library/exceptions.html
pythontech 0:5868e8752d44 194 MP_DEFINE_EXCEPTION_BASE(BaseException)
pythontech 0:5868e8752d44 195 MP_DEFINE_EXCEPTION(SystemExit, BaseException)
pythontech 0:5868e8752d44 196 MP_DEFINE_EXCEPTION(KeyboardInterrupt, BaseException)
pythontech 0:5868e8752d44 197 MP_DEFINE_EXCEPTION(GeneratorExit, BaseException)
pythontech 0:5868e8752d44 198 MP_DEFINE_EXCEPTION(Exception, BaseException)
pythontech 0:5868e8752d44 199 MP_DEFINE_EXCEPTION_BASE(Exception)
Colin Hogben 2:c89e95946844 200 #if MICROPY_PY_ASYNC_AWAIT
Colin Hogben 2:c89e95946844 201 MP_DEFINE_EXCEPTION(StopAsyncIteration, Exception)
Colin Hogben 2:c89e95946844 202 #endif
pythontech 0:5868e8752d44 203 MP_DEFINE_EXCEPTION(StopIteration, Exception)
pythontech 0:5868e8752d44 204 MP_DEFINE_EXCEPTION(ArithmeticError, Exception)
pythontech 0:5868e8752d44 205 MP_DEFINE_EXCEPTION_BASE(ArithmeticError)
pythontech 0:5868e8752d44 206 //MP_DEFINE_EXCEPTION(FloatingPointError, ArithmeticError)
pythontech 0:5868e8752d44 207 MP_DEFINE_EXCEPTION(OverflowError, ArithmeticError)
pythontech 0:5868e8752d44 208 MP_DEFINE_EXCEPTION(ZeroDivisionError, ArithmeticError)
pythontech 0:5868e8752d44 209 MP_DEFINE_EXCEPTION(AssertionError, Exception)
pythontech 0:5868e8752d44 210 MP_DEFINE_EXCEPTION(AttributeError, Exception)
pythontech 0:5868e8752d44 211 //MP_DEFINE_EXCEPTION(BufferError, Exception)
pythontech 0:5868e8752d44 212 //MP_DEFINE_EXCEPTION(EnvironmentError, Exception) use OSError instead
pythontech 0:5868e8752d44 213 MP_DEFINE_EXCEPTION(EOFError, Exception)
pythontech 0:5868e8752d44 214 MP_DEFINE_EXCEPTION(ImportError, Exception)
pythontech 0:5868e8752d44 215 //MP_DEFINE_EXCEPTION(IOError, Exception) use OSError instead
pythontech 0:5868e8752d44 216 MP_DEFINE_EXCEPTION(LookupError, Exception)
pythontech 0:5868e8752d44 217 MP_DEFINE_EXCEPTION_BASE(LookupError)
pythontech 0:5868e8752d44 218 MP_DEFINE_EXCEPTION(IndexError, LookupError)
pythontech 0:5868e8752d44 219 MP_DEFINE_EXCEPTION(KeyError, LookupError)
pythontech 0:5868e8752d44 220 MP_DEFINE_EXCEPTION(MemoryError, Exception)
pythontech 0:5868e8752d44 221 MP_DEFINE_EXCEPTION(NameError, Exception)
pythontech 0:5868e8752d44 222 /*
pythontech 0:5868e8752d44 223 MP_DEFINE_EXCEPTION_BASE(NameError)
pythontech 0:5868e8752d44 224 MP_DEFINE_EXCEPTION(UnboundLocalError, NameError)
pythontech 0:5868e8752d44 225 */
pythontech 0:5868e8752d44 226 MP_DEFINE_EXCEPTION(OSError, Exception)
pythontech 0:5868e8752d44 227 #if MICROPY_PY_BUILTINS_TIMEOUTERROR
pythontech 0:5868e8752d44 228 MP_DEFINE_EXCEPTION_BASE(OSError)
pythontech 0:5868e8752d44 229 MP_DEFINE_EXCEPTION(TimeoutError, OSError)
pythontech 0:5868e8752d44 230 #endif
pythontech 0:5868e8752d44 231 /*
pythontech 0:5868e8752d44 232 MP_DEFINE_EXCEPTION(BlockingIOError, OSError)
pythontech 0:5868e8752d44 233 MP_DEFINE_EXCEPTION(ChildProcessError, OSError)
pythontech 0:5868e8752d44 234 MP_DEFINE_EXCEPTION(ConnectionError, OSError)
pythontech 0:5868e8752d44 235 MP_DEFINE_EXCEPTION(BrokenPipeError, ConnectionError)
pythontech 0:5868e8752d44 236 MP_DEFINE_EXCEPTION(ConnectionAbortedError, ConnectionError)
pythontech 0:5868e8752d44 237 MP_DEFINE_EXCEPTION(ConnectionRefusedError, ConnectionError)
pythontech 0:5868e8752d44 238 MP_DEFINE_EXCEPTION(ConnectionResetError, ConnectionError)
pythontech 0:5868e8752d44 239 MP_DEFINE_EXCEPTION(InterruptedError, OSError)
pythontech 0:5868e8752d44 240 MP_DEFINE_EXCEPTION(IsADirectoryError, OSError)
pythontech 0:5868e8752d44 241 MP_DEFINE_EXCEPTION(NotADirectoryError, OSError)
pythontech 0:5868e8752d44 242 MP_DEFINE_EXCEPTION(PermissionError, OSError)
pythontech 0:5868e8752d44 243 MP_DEFINE_EXCEPTION(ProcessLookupError, OSError)
pythontech 0:5868e8752d44 244 MP_DEFINE_EXCEPTION(FileExistsError, OSError)
pythontech 0:5868e8752d44 245 MP_DEFINE_EXCEPTION(FileNotFoundError, OSError)
pythontech 0:5868e8752d44 246 MP_DEFINE_EXCEPTION(ReferenceError, Exception)
pythontech 0:5868e8752d44 247 */
pythontech 0:5868e8752d44 248 MP_DEFINE_EXCEPTION(RuntimeError, Exception)
pythontech 0:5868e8752d44 249 MP_DEFINE_EXCEPTION_BASE(RuntimeError)
pythontech 0:5868e8752d44 250 MP_DEFINE_EXCEPTION(NotImplementedError, RuntimeError)
pythontech 0:5868e8752d44 251 MP_DEFINE_EXCEPTION(SyntaxError, Exception)
pythontech 0:5868e8752d44 252 MP_DEFINE_EXCEPTION_BASE(SyntaxError)
pythontech 0:5868e8752d44 253 MP_DEFINE_EXCEPTION(IndentationError, SyntaxError)
pythontech 0:5868e8752d44 254 /*
pythontech 0:5868e8752d44 255 MP_DEFINE_EXCEPTION_BASE(IndentationError)
pythontech 0:5868e8752d44 256 MP_DEFINE_EXCEPTION(TabError, IndentationError)
pythontech 0:5868e8752d44 257 */
pythontech 0:5868e8752d44 258 //MP_DEFINE_EXCEPTION(SystemError, Exception)
pythontech 0:5868e8752d44 259 MP_DEFINE_EXCEPTION(TypeError, Exception)
pythontech 0:5868e8752d44 260 #if MICROPY_EMIT_NATIVE
pythontech 0:5868e8752d44 261 MP_DEFINE_EXCEPTION_BASE(TypeError)
pythontech 0:5868e8752d44 262 MP_DEFINE_EXCEPTION(ViperTypeError, TypeError)
pythontech 0:5868e8752d44 263 #endif
pythontech 0:5868e8752d44 264 MP_DEFINE_EXCEPTION(ValueError, Exception)
pythontech 0:5868e8752d44 265 #if MICROPY_PY_BUILTINS_STR_UNICODE
pythontech 0:5868e8752d44 266 MP_DEFINE_EXCEPTION_BASE(ValueError)
pythontech 0:5868e8752d44 267 MP_DEFINE_EXCEPTION(UnicodeError, ValueError)
pythontech 0:5868e8752d44 268 //TODO: Implement more UnicodeError subclasses which take arguments
pythontech 0:5868e8752d44 269 #endif
pythontech 0:5868e8752d44 270 /*
pythontech 0:5868e8752d44 271 MP_DEFINE_EXCEPTION(Warning, Exception)
pythontech 0:5868e8752d44 272 MP_DEFINE_EXCEPTION_BASE(Warning)
pythontech 0:5868e8752d44 273 MP_DEFINE_EXCEPTION(DeprecationWarning, Warning)
pythontech 0:5868e8752d44 274 MP_DEFINE_EXCEPTION(PendingDeprecationWarning, Warning)
pythontech 0:5868e8752d44 275 MP_DEFINE_EXCEPTION(RuntimeWarning, Warning)
pythontech 0:5868e8752d44 276 MP_DEFINE_EXCEPTION(SyntaxWarning, Warning)
pythontech 0:5868e8752d44 277 MP_DEFINE_EXCEPTION(UserWarning, Warning)
pythontech 0:5868e8752d44 278 MP_DEFINE_EXCEPTION(FutureWarning, Warning)
pythontech 0:5868e8752d44 279 MP_DEFINE_EXCEPTION(ImportWarning, Warning)
pythontech 0:5868e8752d44 280 MP_DEFINE_EXCEPTION(UnicodeWarning, Warning)
pythontech 0:5868e8752d44 281 MP_DEFINE_EXCEPTION(BytesWarning, Warning)
pythontech 0:5868e8752d44 282 MP_DEFINE_EXCEPTION(ResourceWarning, Warning)
pythontech 0:5868e8752d44 283 */
pythontech 0:5868e8752d44 284
pythontech 0:5868e8752d44 285 mp_obj_t mp_obj_new_exception(const mp_obj_type_t *exc_type) {
pythontech 0:5868e8752d44 286 return mp_obj_new_exception_args(exc_type, 0, NULL);
pythontech 0:5868e8752d44 287 }
pythontech 0:5868e8752d44 288
pythontech 0:5868e8752d44 289 // "Optimized" version for common(?) case of having 1 exception arg
pythontech 0:5868e8752d44 290 mp_obj_t mp_obj_new_exception_arg1(const mp_obj_type_t *exc_type, mp_obj_t arg) {
pythontech 0:5868e8752d44 291 return mp_obj_new_exception_args(exc_type, 1, &arg);
pythontech 0:5868e8752d44 292 }
pythontech 0:5868e8752d44 293
pythontech 0:5868e8752d44 294 mp_obj_t mp_obj_new_exception_args(const mp_obj_type_t *exc_type, mp_uint_t n_args, const mp_obj_t *args) {
pythontech 0:5868e8752d44 295 assert(exc_type->make_new == mp_obj_exception_make_new);
pythontech 0:5868e8752d44 296 return exc_type->make_new(exc_type, n_args, 0, args);
pythontech 0:5868e8752d44 297 }
pythontech 0:5868e8752d44 298
pythontech 0:5868e8752d44 299 mp_obj_t mp_obj_new_exception_msg(const mp_obj_type_t *exc_type, const char *msg) {
pythontech 0:5868e8752d44 300 return mp_obj_new_exception_msg_varg(exc_type, msg);
pythontech 0:5868e8752d44 301 }
pythontech 0:5868e8752d44 302
pythontech 0:5868e8752d44 303 mp_obj_t mp_obj_new_exception_msg_varg(const mp_obj_type_t *exc_type, const char *fmt, ...) {
pythontech 0:5868e8752d44 304 // check that the given type is an exception type
pythontech 0:5868e8752d44 305 assert(exc_type->make_new == mp_obj_exception_make_new);
pythontech 0:5868e8752d44 306
pythontech 0:5868e8752d44 307 // make exception object
pythontech 0:5868e8752d44 308 mp_obj_exception_t *o = m_new_obj_var_maybe(mp_obj_exception_t, mp_obj_t, 0);
pythontech 0:5868e8752d44 309 if (o == NULL) {
pythontech 0:5868e8752d44 310 // Couldn't allocate heap memory; use local data instead.
pythontech 0:5868e8752d44 311 // Unfortunately, we won't be able to format the string...
pythontech 0:5868e8752d44 312 o = &MP_STATE_VM(mp_emergency_exception_obj);
pythontech 0:5868e8752d44 313 o->base.type = exc_type;
pythontech 0:5868e8752d44 314 o->traceback_data = NULL;
pythontech 0:5868e8752d44 315 o->args = (mp_obj_tuple_t*)&mp_const_empty_tuple_obj;
pythontech 0:5868e8752d44 316
pythontech 0:5868e8752d44 317 #if MICROPY_ENABLE_EMERGENCY_EXCEPTION_BUF
pythontech 0:5868e8752d44 318 // If the user has provided a buffer, then we try to create a tuple
pythontech 0:5868e8752d44 319 // of length 1, which has a string object and the string data.
pythontech 0:5868e8752d44 320
pythontech 0:5868e8752d44 321 if (mp_emergency_exception_buf_size > (sizeof(mp_obj_tuple_t) + sizeof(mp_obj_str_t) + sizeof(mp_obj_t))) {
pythontech 0:5868e8752d44 322 mp_obj_tuple_t *tuple = (mp_obj_tuple_t *)MP_STATE_VM(mp_emergency_exception_buf);
pythontech 0:5868e8752d44 323 mp_obj_str_t *str = (mp_obj_str_t *)&tuple->items[1];
pythontech 0:5868e8752d44 324
pythontech 0:5868e8752d44 325 tuple->base.type = &mp_type_tuple;
pythontech 0:5868e8752d44 326 tuple->len = 1;
pythontech 0:5868e8752d44 327 tuple->items[0] = MP_OBJ_FROM_PTR(str);
pythontech 0:5868e8752d44 328
pythontech 0:5868e8752d44 329 byte *str_data = (byte *)&str[1];
pythontech 0:5868e8752d44 330 uint max_len = MP_STATE_VM(mp_emergency_exception_buf) + mp_emergency_exception_buf_size
pythontech 0:5868e8752d44 331 - str_data;
pythontech 0:5868e8752d44 332
pythontech 0:5868e8752d44 333 vstr_t vstr;
pythontech 0:5868e8752d44 334 vstr_init_fixed_buf(&vstr, max_len, (char *)str_data);
pythontech 0:5868e8752d44 335
pythontech 0:5868e8752d44 336 va_list ap;
pythontech 0:5868e8752d44 337 va_start(ap, fmt);
pythontech 0:5868e8752d44 338 vstr_vprintf(&vstr, fmt, ap);
pythontech 0:5868e8752d44 339 va_end(ap);
pythontech 0:5868e8752d44 340
pythontech 0:5868e8752d44 341 str->base.type = &mp_type_str;
pythontech 0:5868e8752d44 342 str->hash = qstr_compute_hash(str_data, str->len);
pythontech 0:5868e8752d44 343 str->len = vstr.len;
pythontech 0:5868e8752d44 344 str->data = str_data;
pythontech 0:5868e8752d44 345
pythontech 0:5868e8752d44 346 o->args = tuple;
pythontech 0:5868e8752d44 347
pythontech 0:5868e8752d44 348 uint offset = &str_data[str->len] - MP_STATE_VM(mp_emergency_exception_buf);
pythontech 0:5868e8752d44 349 offset += sizeof(void *) - 1;
pythontech 0:5868e8752d44 350 offset &= ~(sizeof(void *) - 1);
pythontech 0:5868e8752d44 351
pythontech 0:5868e8752d44 352 if ((mp_emergency_exception_buf_size - offset) > (sizeof(o->traceback_data[0]) * 3)) {
pythontech 0:5868e8752d44 353 // We have room to store some traceback.
pythontech 0:5868e8752d44 354 o->traceback_data = (size_t*)((byte *)MP_STATE_VM(mp_emergency_exception_buf) + offset);
pythontech 0:5868e8752d44 355 o->traceback_alloc = (MP_STATE_VM(mp_emergency_exception_buf) + mp_emergency_exception_buf_size - (byte *)o->traceback_data) / sizeof(o->traceback_data[0]);
pythontech 0:5868e8752d44 356 o->traceback_len = 0;
pythontech 0:5868e8752d44 357 }
pythontech 0:5868e8752d44 358 }
pythontech 0:5868e8752d44 359 #endif // MICROPY_ENABLE_EMERGENCY_EXCEPTION_BUF
pythontech 0:5868e8752d44 360 } else {
pythontech 0:5868e8752d44 361 o->base.type = exc_type;
pythontech 0:5868e8752d44 362 o->traceback_data = NULL;
pythontech 0:5868e8752d44 363 o->args = MP_OBJ_TO_PTR(mp_obj_new_tuple(1, NULL));
pythontech 0:5868e8752d44 364
pythontech 0:5868e8752d44 365 if (fmt == NULL) {
pythontech 0:5868e8752d44 366 // no message
pythontech 0:5868e8752d44 367 assert(0);
pythontech 0:5868e8752d44 368 } else {
pythontech 0:5868e8752d44 369 if (strchr(fmt, '%') == NULL) {
pythontech 0:5868e8752d44 370 // no formatting substitutions, avoid allocating vstr.
pythontech 0:5868e8752d44 371 o->args->items[0] = mp_obj_new_str(fmt, strlen(fmt), false);
pythontech 0:5868e8752d44 372 } else {
pythontech 0:5868e8752d44 373 // render exception message and store as .args[0]
pythontech 0:5868e8752d44 374 va_list ap;
pythontech 0:5868e8752d44 375 vstr_t vstr;
pythontech 0:5868e8752d44 376 vstr_init(&vstr, 16);
pythontech 0:5868e8752d44 377 va_start(ap, fmt);
pythontech 0:5868e8752d44 378 vstr_vprintf(&vstr, fmt, ap);
pythontech 0:5868e8752d44 379 va_end(ap);
pythontech 0:5868e8752d44 380 o->args->items[0] = mp_obj_new_str_from_vstr(&mp_type_str, &vstr);
pythontech 0:5868e8752d44 381 }
pythontech 0:5868e8752d44 382 }
pythontech 0:5868e8752d44 383 }
pythontech 0:5868e8752d44 384
pythontech 0:5868e8752d44 385 return MP_OBJ_FROM_PTR(o);
pythontech 0:5868e8752d44 386 }
pythontech 0:5868e8752d44 387
pythontech 0:5868e8752d44 388 // return true if the given object is an exception type
pythontech 0:5868e8752d44 389 bool mp_obj_is_exception_type(mp_obj_t self_in) {
pythontech 0:5868e8752d44 390 if (MP_OBJ_IS_TYPE(self_in, &mp_type_type)) {
pythontech 0:5868e8752d44 391 // optimisation when self_in is a builtin exception
pythontech 0:5868e8752d44 392 mp_obj_type_t *self = MP_OBJ_TO_PTR(self_in);
pythontech 0:5868e8752d44 393 if (self->make_new == mp_obj_exception_make_new) {
pythontech 0:5868e8752d44 394 return true;
pythontech 0:5868e8752d44 395 }
pythontech 0:5868e8752d44 396 }
pythontech 0:5868e8752d44 397 return mp_obj_is_subclass_fast(self_in, MP_OBJ_FROM_PTR(&mp_type_BaseException));
pythontech 0:5868e8752d44 398 }
pythontech 0:5868e8752d44 399
pythontech 0:5868e8752d44 400 // return true if the given object is an instance of an exception type
pythontech 0:5868e8752d44 401 bool mp_obj_is_exception_instance(mp_obj_t self_in) {
pythontech 0:5868e8752d44 402 return mp_obj_is_exception_type(MP_OBJ_FROM_PTR(mp_obj_get_type(self_in)));
pythontech 0:5868e8752d44 403 }
pythontech 0:5868e8752d44 404
pythontech 0:5868e8752d44 405 // Return true if exception (type or instance) is a subclass of given
pythontech 0:5868e8752d44 406 // exception type. Assumes exc_type is a subclass of BaseException, as
pythontech 0:5868e8752d44 407 // defined by mp_obj_is_exception_type(exc_type).
pythontech 0:5868e8752d44 408 bool mp_obj_exception_match(mp_obj_t exc, mp_const_obj_t exc_type) {
pythontech 0:5868e8752d44 409 // if exc is an instance of an exception, then extract and use its type
pythontech 0:5868e8752d44 410 if (mp_obj_is_exception_instance(exc)) {
pythontech 0:5868e8752d44 411 exc = MP_OBJ_FROM_PTR(mp_obj_get_type(exc));
pythontech 0:5868e8752d44 412 }
pythontech 0:5868e8752d44 413 return mp_obj_is_subclass_fast(exc, exc_type);
pythontech 0:5868e8752d44 414 }
pythontech 0:5868e8752d44 415
pythontech 0:5868e8752d44 416 // traceback handling functions
pythontech 0:5868e8752d44 417
pythontech 0:5868e8752d44 418 #define GET_NATIVE_EXCEPTION(self, self_in) \
pythontech 0:5868e8752d44 419 /* make sure self_in is an exception instance */ \
pythontech 0:5868e8752d44 420 assert(mp_obj_is_exception_instance(self_in)); \
pythontech 0:5868e8752d44 421 mp_obj_exception_t *self; \
pythontech 0:5868e8752d44 422 if (mp_obj_is_native_exception_instance(self_in)) { \
pythontech 0:5868e8752d44 423 self = MP_OBJ_TO_PTR(self_in); \
pythontech 0:5868e8752d44 424 } else { \
pythontech 0:5868e8752d44 425 self = MP_OBJ_TO_PTR(((mp_obj_instance_t*)MP_OBJ_TO_PTR(self_in))->subobj[0]); \
pythontech 0:5868e8752d44 426 }
pythontech 0:5868e8752d44 427
pythontech 0:5868e8752d44 428 void mp_obj_exception_clear_traceback(mp_obj_t self_in) {
pythontech 0:5868e8752d44 429 GET_NATIVE_EXCEPTION(self, self_in);
pythontech 0:5868e8752d44 430 // just set the traceback to the null object
pythontech 0:5868e8752d44 431 // we don't want to call any memory management functions here
pythontech 0:5868e8752d44 432 self->traceback_data = NULL;
pythontech 0:5868e8752d44 433 }
pythontech 0:5868e8752d44 434
pythontech 0:5868e8752d44 435 void mp_obj_exception_add_traceback(mp_obj_t self_in, qstr file, size_t line, qstr block) {
pythontech 0:5868e8752d44 436 GET_NATIVE_EXCEPTION(self, self_in);
pythontech 0:5868e8752d44 437
pythontech 0:5868e8752d44 438 // append this traceback info to traceback data
pythontech 0:5868e8752d44 439 // if memory allocation fails (eg because gc is locked), just return
pythontech 0:5868e8752d44 440
pythontech 0:5868e8752d44 441 if (self->traceback_data == NULL) {
pythontech 0:5868e8752d44 442 self->traceback_data = m_new_maybe(size_t, 3);
pythontech 0:5868e8752d44 443 if (self->traceback_data == NULL) {
pythontech 0:5868e8752d44 444 return;
pythontech 0:5868e8752d44 445 }
pythontech 0:5868e8752d44 446 self->traceback_alloc = 3;
pythontech 0:5868e8752d44 447 self->traceback_len = 0;
pythontech 0:5868e8752d44 448 } else if (self->traceback_len + 3 > self->traceback_alloc) {
pythontech 0:5868e8752d44 449 // be conservative with growing traceback data
pythontech 0:5868e8752d44 450 size_t *tb_data = m_renew_maybe(size_t, self->traceback_data, self->traceback_alloc, self->traceback_alloc + 3, true);
pythontech 0:5868e8752d44 451 if (tb_data == NULL) {
pythontech 0:5868e8752d44 452 return;
pythontech 0:5868e8752d44 453 }
pythontech 0:5868e8752d44 454 self->traceback_data = tb_data;
pythontech 0:5868e8752d44 455 self->traceback_alloc += 3;
pythontech 0:5868e8752d44 456 }
pythontech 0:5868e8752d44 457
pythontech 0:5868e8752d44 458 size_t *tb_data = &self->traceback_data[self->traceback_len];
pythontech 0:5868e8752d44 459 self->traceback_len += 3;
pythontech 0:5868e8752d44 460 tb_data[0] = file;
pythontech 0:5868e8752d44 461 tb_data[1] = line;
pythontech 0:5868e8752d44 462 tb_data[2] = block;
pythontech 0:5868e8752d44 463 }
pythontech 0:5868e8752d44 464
pythontech 0:5868e8752d44 465 void mp_obj_exception_get_traceback(mp_obj_t self_in, size_t *n, size_t **values) {
pythontech 0:5868e8752d44 466 GET_NATIVE_EXCEPTION(self, self_in);
pythontech 0:5868e8752d44 467
pythontech 0:5868e8752d44 468 if (self->traceback_data == NULL) {
pythontech 0:5868e8752d44 469 *n = 0;
pythontech 0:5868e8752d44 470 *values = NULL;
pythontech 0:5868e8752d44 471 } else {
pythontech 0:5868e8752d44 472 *n = self->traceback_len;
pythontech 0:5868e8752d44 473 *values = self->traceback_data;
pythontech 0:5868e8752d44 474 }
pythontech 0:5868e8752d44 475 }