04b9147e15
Blanket wide to all .c and .h files. Some files originating from ST are difficult to deal with (license wise) so it was left out of those. Also merged modpyb.h, modos.h, modstm.h and modtime.h in stmhal/.
344 lines
13 KiB
C
344 lines
13 KiB
C
/*
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* This file is part of the Micro Python project, http://micropython.org/
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*
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* The MIT License (MIT)
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*
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* Copyright (c) 2013, 2014 Damien P. George
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include <string.h>
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#include <stdarg.h>
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#include <assert.h>
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#include "mpconfig.h"
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#include "nlr.h"
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#include "misc.h"
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#include "qstr.h"
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#include "obj.h"
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#include "objtuple.h"
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#include "objtype.h"
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#include "runtime.h"
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#include "runtime0.h"
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typedef struct _mp_obj_exception_t {
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mp_obj_base_t base;
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mp_obj_t traceback; // a list object, holding (file,line,block) as numbers (not Python objects); a hack for now
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mp_obj_tuple_t *args;
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} mp_obj_exception_t;
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// Instance of MemoryError exception - needed by mp_malloc_fail
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const mp_obj_exception_t mp_const_MemoryError_obj = {{&mp_type_MemoryError}, MP_OBJ_NULL, mp_const_empty_tuple};
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// Local non-heap memory for allocating an exception when we run out of RAM
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STATIC mp_obj_exception_t mp_emergency_exception_obj;
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// Instance of GeneratorExit exception - needed by generator.close()
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// This would belong to objgenerator.c, but to keep mp_obj_exception_t
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// definition module-private so far, have it here.
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const mp_obj_exception_t mp_const_GeneratorExit_obj = {{&mp_type_GeneratorExit}, MP_OBJ_NULL, mp_const_empty_tuple};
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STATIC void mp_obj_exception_print(void (*print)(void *env, const char *fmt, ...), void *env, mp_obj_t o_in, mp_print_kind_t kind) {
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mp_obj_exception_t *o = o_in;
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mp_print_kind_t k = kind & ~PRINT_EXC_SUBCLASS;
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bool is_subclass = kind & PRINT_EXC_SUBCLASS;
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if (!is_subclass && (k == PRINT_REPR || k == PRINT_EXC)) {
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print(env, "%s", qstr_str(o->base.type->name));
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}
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if (k == PRINT_EXC) {
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print(env, ": ");
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}
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if (k == PRINT_STR || k == PRINT_EXC) {
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if (o->args == NULL || o->args->len == 0) {
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print(env, "");
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return;
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} else if (o->args->len == 1) {
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mp_obj_print_helper(print, env, o->args->items[0], PRINT_STR);
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return;
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}
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}
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tuple_print(print, env, o->args, kind);
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}
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mp_obj_t mp_obj_exception_make_new(mp_obj_t type_in, uint n_args, uint n_kw, const mp_obj_t *args) {
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mp_obj_type_t *type = type_in;
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if (n_kw != 0) {
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nlr_raise(mp_obj_new_exception_msg_varg(&mp_type_TypeError, "%s does not take keyword arguments", mp_obj_get_type_str(type_in)));
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}
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mp_obj_exception_t *o = m_new_obj_var_maybe(mp_obj_exception_t, mp_obj_t, 0);
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if (o == NULL) {
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// Couldn't allocate heap memory; use local data instead.
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o = &mp_emergency_exception_obj;
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// We can't store any args.
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n_args = 0;
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o->args = mp_const_empty_tuple;
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} else {
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o->args = mp_obj_new_tuple(n_args, args);
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}
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o->base.type = type;
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o->traceback = MP_OBJ_NULL;
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return o;
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}
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// Get exception "value" - that is, first argument, or None
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mp_obj_t mp_obj_exception_get_value(mp_obj_t self_in) {
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mp_obj_exception_t *self = self_in;
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if (self->args->len == 0) {
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return mp_const_none;
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} else {
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return self->args->items[0];
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}
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}
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STATIC void exception_load_attr(mp_obj_t self_in, qstr attr, mp_obj_t *dest) {
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mp_obj_exception_t *self = self_in;
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if (attr == MP_QSTR_args) {
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dest[0] = self->args;
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} else if (self->base.type == &mp_type_StopIteration && attr == MP_QSTR_value) {
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dest[0] = mp_obj_exception_get_value(self);
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}
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}
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const mp_obj_type_t mp_type_BaseException = {
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{ &mp_type_type },
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.name = MP_QSTR_BaseException,
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.print = mp_obj_exception_print,
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.make_new = mp_obj_exception_make_new,
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.load_attr = exception_load_attr,
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};
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#define MP_DEFINE_EXCEPTION_BASE(base_name) \
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STATIC const mp_obj_tuple_t mp_type_ ## base_name ## _base_tuple = {{&mp_type_tuple}, 1, {(mp_obj_t)&mp_type_ ## base_name}};\
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#define MP_DEFINE_EXCEPTION(exc_name, base_name) \
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const mp_obj_type_t mp_type_ ## exc_name = { \
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{ &mp_type_type }, \
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.name = MP_QSTR_ ## exc_name, \
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.print = mp_obj_exception_print, \
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.make_new = mp_obj_exception_make_new, \
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.load_attr = exception_load_attr, \
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.bases_tuple = (mp_obj_t)&mp_type_ ## base_name ## _base_tuple, \
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};
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// List of all exceptions, arranged as in the table at:
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// http://docs.python.org/3.3/library/exceptions.html
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MP_DEFINE_EXCEPTION_BASE(BaseException)
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//MP_DEFINE_EXCEPTION(SystemExit, BaseException)
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//MP_DEFINE_EXCEPTION(KeyboardInterrupt, BaseException)
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MP_DEFINE_EXCEPTION(GeneratorExit, BaseException)
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MP_DEFINE_EXCEPTION(Exception, BaseException)
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MP_DEFINE_EXCEPTION_BASE(Exception)
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MP_DEFINE_EXCEPTION(StopIteration, Exception)
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MP_DEFINE_EXCEPTION(ArithmeticError, Exception)
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MP_DEFINE_EXCEPTION_BASE(ArithmeticError)
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//MP_DEFINE_EXCEPTION(FloatingPointError, ArithmeticError)
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MP_DEFINE_EXCEPTION(OverflowError, ArithmeticError)
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MP_DEFINE_EXCEPTION(ZeroDivisionError, ArithmeticError)
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MP_DEFINE_EXCEPTION(AssertionError, Exception)
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MP_DEFINE_EXCEPTION(AttributeError, Exception)
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//MP_DEFINE_EXCEPTION(BufferError, Exception)
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//MP_DEFINE_EXCEPTION(EnvironmentError, Exception)
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MP_DEFINE_EXCEPTION(EOFError, Exception)
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MP_DEFINE_EXCEPTION(ImportError, Exception)
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MP_DEFINE_EXCEPTION(IOError, Exception)
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MP_DEFINE_EXCEPTION(LookupError, Exception)
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MP_DEFINE_EXCEPTION_BASE(LookupError)
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MP_DEFINE_EXCEPTION(IndexError, LookupError)
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MP_DEFINE_EXCEPTION(KeyError, LookupError)
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MP_DEFINE_EXCEPTION(MemoryError, Exception)
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MP_DEFINE_EXCEPTION(NameError, Exception)
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MP_DEFINE_EXCEPTION_BASE(NameError)
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//MP_DEFINE_EXCEPTION(UnboundLocalError, NameError)
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MP_DEFINE_EXCEPTION(OSError, Exception)
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MP_DEFINE_EXCEPTION_BASE(OSError)
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/*
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MP_DEFINE_EXCEPTION(BlockingIOError, OSError)
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MP_DEFINE_EXCEPTION(ChildProcessError, OSError)
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MP_DEFINE_EXCEPTION(ConnectionError, OSError)
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MP_DEFINE_EXCEPTION(BrokenPipeError, ConnectionError)
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MP_DEFINE_EXCEPTION(ConnectionAbortedError, ConnectionError)
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MP_DEFINE_EXCEPTION(ConnectionRefusedError, ConnectionError)
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MP_DEFINE_EXCEPTION(ConnectionResetError, ConnectionError)
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MP_DEFINE_EXCEPTION(InterruptedError, OSError)
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MP_DEFINE_EXCEPTION(IsADirectoryError, OSError)
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MP_DEFINE_EXCEPTION(NotADirectoryError, OSError)
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MP_DEFINE_EXCEPTION(PermissionError, OSError)
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MP_DEFINE_EXCEPTION(ProcessLookupError, OSError)
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MP_DEFINE_EXCEPTION(TimeoutError, OSError)
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MP_DEFINE_EXCEPTION(FileExistsError, OSError)
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MP_DEFINE_EXCEPTION(FileNotFoundError, OSError)
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MP_DEFINE_EXCEPTION(ReferenceError, Exception)
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*/
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MP_DEFINE_EXCEPTION(RuntimeError, Exception)
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MP_DEFINE_EXCEPTION_BASE(RuntimeError)
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MP_DEFINE_EXCEPTION(NotImplementedError, RuntimeError)
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MP_DEFINE_EXCEPTION(SyntaxError, Exception)
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MP_DEFINE_EXCEPTION_BASE(SyntaxError)
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MP_DEFINE_EXCEPTION(IndentationError, SyntaxError)
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/*
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MP_DEFINE_EXCEPTION_BASE(IndentationError)
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MP_DEFINE_EXCEPTION(TabError, IndentationError)
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*/
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MP_DEFINE_EXCEPTION(SystemError, Exception)
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MP_DEFINE_EXCEPTION(TypeError, Exception)
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MP_DEFINE_EXCEPTION(ValueError, Exception)
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//TODO: Implement UnicodeErrors which take arguments
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/*
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MP_DEFINE_EXCEPTION(Warning, Exception)
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MP_DEFINE_EXCEPTION_BASE(Warning)
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MP_DEFINE_EXCEPTION(DeprecationWarning, Warning)
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MP_DEFINE_EXCEPTION(PendingDeprecationWarning, Warning)
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MP_DEFINE_EXCEPTION(RuntimeWarning, Warning)
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MP_DEFINE_EXCEPTION(SyntaxWarning, Warning)
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MP_DEFINE_EXCEPTION(UserWarning, Warning)
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MP_DEFINE_EXCEPTION(FutureWarning, Warning)
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MP_DEFINE_EXCEPTION(ImportWarning, Warning)
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MP_DEFINE_EXCEPTION(UnicodeWarning, Warning)
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MP_DEFINE_EXCEPTION(BytesWarning, Warning)
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MP_DEFINE_EXCEPTION(ResourceWarning, Warning)
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*/
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mp_obj_t mp_obj_new_exception(const mp_obj_type_t *exc_type) {
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return mp_obj_new_exception_args(exc_type, 0, NULL);
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}
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// "Optimized" version for common(?) case of having 1 exception arg
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mp_obj_t mp_obj_new_exception_arg1(const mp_obj_type_t *exc_type, mp_obj_t arg) {
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return mp_obj_new_exception_args(exc_type, 1, &arg);
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}
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mp_obj_t mp_obj_new_exception_args(const mp_obj_type_t *exc_type, uint n_args, const mp_obj_t *args) {
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assert(exc_type->make_new == mp_obj_exception_make_new);
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return exc_type->make_new((mp_obj_t)exc_type, n_args, 0, args);
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}
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mp_obj_t mp_obj_new_exception_msg(const mp_obj_type_t *exc_type, const char *msg) {
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return mp_obj_new_exception_msg_varg(exc_type, msg);
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}
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mp_obj_t mp_obj_new_exception_msg_varg(const mp_obj_type_t *exc_type, const char *fmt, ...) {
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// check that the given type is an exception type
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assert(exc_type->make_new == mp_obj_exception_make_new);
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// make exception object
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mp_obj_exception_t *o = m_new_obj_var_maybe(mp_obj_exception_t, mp_obj_t, 0);
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if (o == NULL) {
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// Couldn't allocate heap memory; use local data instead.
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// Unfortunately, we won't be able to format the string...
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o = &mp_emergency_exception_obj;
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o->base.type = exc_type;
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o->traceback = MP_OBJ_NULL;
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o->args = mp_const_empty_tuple;
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} else {
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o->base.type = exc_type;
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o->traceback = MP_OBJ_NULL;
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o->args = mp_obj_new_tuple(1, NULL);
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if (fmt == NULL) {
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// no message
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assert(0);
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} else {
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// render exception message and store as .args[0]
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// TODO: optimize bufferbloat
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vstr_t *vstr = vstr_new();
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va_list ap;
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va_start(ap, fmt);
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vstr_vprintf(vstr, fmt, ap);
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va_end(ap);
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o->args->items[0] = mp_obj_new_str((byte*)vstr->buf, vstr->len, false);
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vstr_free(vstr);
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}
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}
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return o;
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}
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// return true if the given object is an exception type
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bool mp_obj_is_exception_type(mp_obj_t self_in) {
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if (MP_OBJ_IS_TYPE(self_in, &mp_type_type)) {
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// optimisation when self_in is a builtin exception
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mp_obj_type_t *self = self_in;
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if (self->make_new == mp_obj_exception_make_new) {
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return true;
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}
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}
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return mp_obj_is_subclass_fast(self_in, &mp_type_BaseException);
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}
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// return true if the given object is an instance of an exception type
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bool mp_obj_is_exception_instance(mp_obj_t self_in) {
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return mp_obj_is_exception_type(mp_obj_get_type(self_in));
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}
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// return true if exception (type or instance) is a subclass of given
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// exception type.
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bool mp_obj_exception_match(mp_obj_t exc, const mp_obj_type_t *exc_type) {
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// TODO: move implementation from RT_BINARY_OP_EXCEPTION_MATCH here.
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return mp_binary_op(MP_BINARY_OP_EXCEPTION_MATCH, exc, (mp_obj_t)exc_type) == mp_const_true;
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}
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// traceback handling functions
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#define GET_NATIVE_EXCEPTION(self, self_in) \
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/* make sure self_in is an exception instance */ \
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assert(mp_obj_is_exception_instance(self_in)); \
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mp_obj_exception_t *self; \
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if (mp_obj_is_native_exception_instance(self_in)) { \
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self = self_in; \
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} else { \
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self = ((mp_obj_instance_t*)self_in)->subobj[0]; \
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}
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void mp_obj_exception_clear_traceback(mp_obj_t self_in) {
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GET_NATIVE_EXCEPTION(self, self_in);
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// just set the traceback to the null object
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// we don't want to call any memory management functions here
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self->traceback = MP_OBJ_NULL;
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}
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void mp_obj_exception_add_traceback(mp_obj_t self_in, qstr file, machine_uint_t line, qstr block) {
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GET_NATIVE_EXCEPTION(self, self_in);
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// for traceback, we are just using the list object for convenience, it's not really a list of Python objects
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if (self->traceback == MP_OBJ_NULL) {
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self->traceback = mp_obj_new_list(0, NULL);
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}
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mp_obj_list_append(self->traceback, (mp_obj_t)(machine_uint_t)file);
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mp_obj_list_append(self->traceback, (mp_obj_t)(machine_uint_t)line);
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mp_obj_list_append(self->traceback, (mp_obj_t)(machine_uint_t)block);
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}
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void mp_obj_exception_get_traceback(mp_obj_t self_in, machine_uint_t *n, machine_uint_t **values) {
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GET_NATIVE_EXCEPTION(self, self_in);
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if (self->traceback == MP_OBJ_NULL) {
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*n = 0;
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*values = NULL;
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} else {
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uint n2;
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mp_obj_list_get(self->traceback, &n2, (mp_obj_t**)values);
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*n = n2;
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}
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}
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